From 0fe51aa5eee51db7c7ecd201d42a977ad79c58b6 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Thu, 1 Nov 2012 11:20:44 -0700 Subject: USB: Don't use EHCI port sempahore for USB 3.0 hubs. The EHCI host controller needs to prevent EHCI initialization when the UHCI or OHCI companion controller is in the middle of a port reset. It uses ehci_cf_port_reset_rwsem to do this. USB 3.0 hubs can't be under an EHCI host controller, so it makes no sense to down the semaphore for USB 3.0 hubs. It also makes the warm port reset code more complex. Don't down ehci_cf_port_reset_rwsem for USB 3.0 hubs. Signed-off-by: Sarah Sharp Acked-by: Alan Stern --- drivers/usb/core/hub.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 9641e9c1dec5..855bb0d6313d 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2661,17 +2661,16 @@ static int hub_port_reset(struct usb_hub *hub, int port1, { int i, status; - if (!warm) { - /* Block EHCI CF initialization during the port reset. - * Some companion controllers don't like it when they mix. - */ - down_read(&ehci_cf_port_reset_rwsem); - } else { - if (!hub_is_superspeed(hub->hdev)) { + if (!hub_is_superspeed(hub->hdev)) { + if (warm) { dev_err(hub->intfdev, "only USB3 hub support " "warm reset\n"); return -EINVAL; } + /* Block EHCI CF initialization during the port reset. + * Some companion controllers don't like it when they mix. + */ + down_read(&ehci_cf_port_reset_rwsem); } /* Reset the port */ @@ -2709,7 +2708,7 @@ static int hub_port_reset(struct usb_hub *hub, int port1, port1); done: - if (!warm) + if (!hub_is_superspeed(hub->hdev)) up_read(&ehci_cf_port_reset_rwsem); return status; -- cgit v1.2.3 From 2d4fa940f99663c82ba55b2244638833b388e4e2 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Tue, 4 Dec 2012 15:27:50 -0800 Subject: USB: Prepare for refactoring by adding extra udev checks. The next patch will refactor the hub port code to rip out the recursive call to hub_port_reset on a failed hot reset. In preparation for that, make sure all code paths can deal with being called with a NULL udev. The usb_device will not be valid if warm reset was issued because a port transitioned to the Inactive or Compliance Mode on a device connect. This patch should have no effect on current behavior. Signed-off-by: Sarah Sharp Acked-by: Alan Stern --- drivers/usb/core/hub.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 855bb0d6313d..c3368f978c44 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2584,6 +2584,9 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1, return -ENOTCONN; if ((portstatus & USB_PORT_STAT_ENABLE)) { + if (!udev) + return 0; + if (hub_is_wusb(hub)) udev->speed = USB_SPEED_WIRELESS; else if (hub_is_superspeed(hub->hdev)) @@ -2627,13 +2630,15 @@ static void hub_port_finish_reset(struct usb_hub *hub, int port1, struct usb_hcd *hcd; /* TRSTRCY = 10 ms; plus some extra */ msleep(10 + 40); - update_devnum(udev, 0); - hcd = bus_to_hcd(udev->bus); - /* The xHC may think the device is already reset, - * so ignore the status. - */ - if (hcd->driver->reset_device) - hcd->driver->reset_device(hcd, udev); + if (udev) { + update_devnum(udev, 0); + hcd = bus_to_hcd(udev->bus); + /* The xHC may think the device is already + * reset, so ignore the status. + */ + if (hcd->driver->reset_device) + hcd->driver->reset_device(hcd, udev); + } } /* FALL THROUGH */ case -ENOTCONN: @@ -2647,7 +2652,7 @@ static void hub_port_finish_reset(struct usb_hub *hub, int port1, clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_PORT_LINK_STATE); } - if (!warm) + if (!warm && udev) usb_set_device_state(udev, *status ? USB_STATE_NOTATTACHED : USB_STATE_DEFAULT); -- cgit v1.2.3 From a24a6078754f28528bc91e7e7b3e6ae86bd936d8 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Thu, 1 Nov 2012 11:20:44 -0700 Subject: USB: Rip out recursive call on warm port reset. When a hot reset fails on a USB 3.0 port, the current port reset code recursively calls hub_port_reset inside hub_port_wait_reset. This isn't ideal, since we should avoid recursive calls in the kernel, and it also doesn't allow us to issue multiple warm resets on reset failures. Rip out the recursive call. Instead, add code to hub_port_reset to issue a warm reset if the hot reset fails, and try multiple warm resets before giving up on the port. In hub_port_wait_reset, remove the recursive call and re-indent. The code is basically the same, except: 1. It bails out early if the port has transitioned to Inactive or Compliance Mode after the reset completed. 2. It doesn't consider a connect status change to be a failed reset. If multiple warm resets needed to be issued, the connect status may have changed, so we need to ignore that and look at the port link state instead. hub_port_reset will now do that. 3. It unconditionally sets udev->speed on all types of successful resets. The old recursive code would set the port speed when the second hub_port_reset returned. The old code did not handle connected devices needing a warm reset well. There were only two situations that the old code handled correctly: an empty port needing a warm reset, and a hot reset that migrated to a warm reset. When an empty port needed a warm reset, hub_port_reset was called with the warm variable set. The code in hub_port_finish_reset would skip telling the USB core and the xHC host that the device was reset, because otherwise that would result in a NULL pointer dereference. When a USB 3.0 device reset migrated to a warm reset, the recursive call made the call stack look like this: hub_port_reset(warm = false) hub_wait_port_reset(warm = false) hub_port_reset(warm = true) hub_wait_port_reset(warm = true) hub_port_finish_reset(warm = true) (return up the call stack to the first wait) hub_port_finish_reset(warm = false) The old code didn't want to notify the USB core or the xHC host of device reset twice, so it only did it in the second call to hub_port_finish_reset, when warm was set to false. This was necessary because before patch two ("USB: Ignore xHCI Reset Device status."), the USB core would pay attention to the xHC Reset Device command error status, and the second call would always fail. Now that we no longer have the recursive call, and warm can change from false to true in hub_port_reset, we need to have hub_port_finish_reset unconditionally notify the USB core and the xHC of the device reset. In hub_port_finish_reset, unconditionally clear the connect status change (CSC) bit for USB 3.0 hubs when the port reset is done. If we had to issue multiple warm resets for a device, that bit may have been set if the device went into SS.Inactive and then was successfully warm reset. Signed-off-by: Sarah Sharp Acked-by: Alan Stern --- drivers/usb/core/hub.c | 150 ++++++++++++++++++++++--------------------------- 1 file changed, 68 insertions(+), 82 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index c3368f978c44..d1fceb219d97 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2538,73 +2538,35 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1, if ((portstatus & USB_PORT_STAT_RESET)) goto delay; - /* - * Some buggy devices require a warm reset to be issued even - * when the port appears not to be connected. + if (hub_port_warm_reset_required(hub, portstatus)) + return -ENOTCONN; + + /* Device went away? */ + if (!(portstatus & USB_PORT_STAT_CONNECTION)) + return -ENOTCONN; + + /* bomb out completely if the connection bounced. A USB 3.0 + * connection may bounce if multiple warm resets were issued, + * but the device may have successfully re-connected. Ignore it. */ - if (!warm) { - /* - * Some buggy devices can cause an NEC host controller - * to transition to the "Error" state after a hot port - * reset. This will show up as the port state in - * "Inactive", and the port may also report a - * disconnect. Forcing a warm port reset seems to make - * the device work. - * - * See https://bugzilla.kernel.org/show_bug.cgi?id=41752 - */ - if (hub_port_warm_reset_required(hub, portstatus)) { - int ret; - - if ((portchange & USB_PORT_STAT_C_CONNECTION)) - clear_port_feature(hub->hdev, port1, - USB_PORT_FEAT_C_CONNECTION); - if (portchange & USB_PORT_STAT_C_LINK_STATE) - clear_port_feature(hub->hdev, port1, - USB_PORT_FEAT_C_PORT_LINK_STATE); - if (portchange & USB_PORT_STAT_C_RESET) - clear_port_feature(hub->hdev, port1, - USB_PORT_FEAT_C_RESET); - dev_dbg(hub->intfdev, "hot reset failed, warm reset port %d\n", - port1); - ret = hub_port_reset(hub, port1, - udev, HUB_BH_RESET_TIME, - true); - if ((portchange & USB_PORT_STAT_C_CONNECTION)) - clear_port_feature(hub->hdev, port1, - USB_PORT_FEAT_C_CONNECTION); - return ret; - } - /* Device went away? */ - if (!(portstatus & USB_PORT_STAT_CONNECTION)) - return -ENOTCONN; - - /* bomb out completely if the connection bounced */ - if ((portchange & USB_PORT_STAT_C_CONNECTION)) - return -ENOTCONN; - - if ((portstatus & USB_PORT_STAT_ENABLE)) { - if (!udev) - return 0; - - if (hub_is_wusb(hub)) - udev->speed = USB_SPEED_WIRELESS; - else if (hub_is_superspeed(hub->hdev)) - udev->speed = USB_SPEED_SUPER; - else if (portstatus & USB_PORT_STAT_HIGH_SPEED) - udev->speed = USB_SPEED_HIGH; - else if (portstatus & USB_PORT_STAT_LOW_SPEED) - udev->speed = USB_SPEED_LOW; - else - udev->speed = USB_SPEED_FULL; + if (!hub_is_superspeed(hub->hdev) && + (portchange & USB_PORT_STAT_C_CONNECTION)) + return -ENOTCONN; + + if ((portstatus & USB_PORT_STAT_ENABLE)) { + if (!udev) return 0; - } - } else { - if (!(portstatus & USB_PORT_STAT_CONNECTION) || - hub_port_warm_reset_required(hub, - portstatus)) - return -ENOTCONN; + if (hub_is_wusb(hub)) + udev->speed = USB_SPEED_WIRELESS; + else if (hub_is_superspeed(hub->hdev)) + udev->speed = USB_SPEED_SUPER; + else if (portstatus & USB_PORT_STAT_HIGH_SPEED) + udev->speed = USB_SPEED_HIGH; + else if (portstatus & USB_PORT_STAT_LOW_SPEED) + udev->speed = USB_SPEED_LOW; + else + udev->speed = USB_SPEED_FULL; return 0; } @@ -2622,23 +2584,21 @@ delay: } static void hub_port_finish_reset(struct usb_hub *hub, int port1, - struct usb_device *udev, int *status, bool warm) + struct usb_device *udev, int *status) { switch (*status) { case 0: - if (!warm) { - struct usb_hcd *hcd; - /* TRSTRCY = 10 ms; plus some extra */ - msleep(10 + 40); - if (udev) { - update_devnum(udev, 0); - hcd = bus_to_hcd(udev->bus); - /* The xHC may think the device is already - * reset, so ignore the status. - */ - if (hcd->driver->reset_device) - hcd->driver->reset_device(hcd, udev); - } + /* TRSTRCY = 10 ms; plus some extra */ + msleep(10 + 40); + if (udev) { + struct usb_hcd *hcd = bus_to_hcd(udev->bus); + + update_devnum(udev, 0); + /* The xHC may think the device is already reset, + * so ignore the status. + */ + if (hcd->driver->reset_device) + hcd->driver->reset_device(hcd, udev); } /* FALL THROUGH */ case -ENOTCONN: @@ -2651,8 +2611,10 @@ static void hub_port_finish_reset(struct usb_hub *hub, int port1, USB_PORT_FEAT_C_BH_PORT_RESET); clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_PORT_LINK_STATE); + clear_port_feature(hub->hdev, port1, + USB_PORT_FEAT_C_CONNECTION); } - if (!warm && udev) + if (udev) usb_set_device_state(udev, *status ? USB_STATE_NOTATTACHED : USB_STATE_DEFAULT); @@ -2665,6 +2627,7 @@ static int hub_port_reset(struct usb_hub *hub, int port1, struct usb_device *udev, unsigned int delay, bool warm) { int i, status; + u16 portchange, portstatus; if (!hub_is_superspeed(hub->hdev)) { if (warm) { @@ -2696,10 +2659,33 @@ static int hub_port_reset(struct usb_hub *hub, int port1, status); } - /* return on disconnect or reset */ + /* Check for disconnect or reset */ if (status == 0 || status == -ENOTCONN || status == -ENODEV) { - hub_port_finish_reset(hub, port1, udev, &status, warm); - goto done; + hub_port_finish_reset(hub, port1, udev, &status); + + if (!hub_is_superspeed(hub->hdev)) + goto done; + + /* + * If a USB 3.0 device migrates from reset to an error + * state, re-issue the warm reset. + */ + if (hub_port_status(hub, port1, + &portstatus, &portchange) < 0) + goto done; + + if (!hub_port_warm_reset_required(hub, portstatus)) + goto done; + + /* + * If the port is in SS.Inactive or Compliance Mode, the + * hot or warm reset failed. Try another warm reset. + */ + if (!warm) { + dev_dbg(hub->intfdev, "hot reset failed, warm reset port %d\n", + port1); + warm = true; + } } dev_dbg (hub->intfdev, -- cgit v1.2.3 From d3b9d7a9051d7024a93c76a84b2f84b3b66ad6d5 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Thu, 1 Nov 2012 11:20:44 -0700 Subject: USB: Fix connected device switch to Inactive state. A USB 3.0 device can transition to the Inactive state if a U1 or U2 exit transition fails. The current code in hub_events simply issues a warm reset, but does not call any pre-reset or post-reset driver methods (or unbind/rebind drivers without them). Therefore the drivers won't know their device has just been reset. hub_events should instead call usb_reset_device. This means hub_port_reset now needs to figure out whether it should issue a warm reset or a hot reset. Remove the FIXME note about needing disconnect() for a NOTATTACHED device. This patch fixes that. Signed-off-by: Sarah Sharp Acked-by: Alan Stern --- drivers/usb/core/hub.c | 30 +++++++++++++++++++++++++----- 1 file changed, 25 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index d1fceb219d97..b00f10956b00 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2605,7 +2605,6 @@ static void hub_port_finish_reset(struct usb_hub *hub, int port1, case -ENODEV: clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_RESET); - /* FIXME need disconnect() for NOTATTACHED device */ if (hub_is_superspeed(hub->hdev)) { clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_BH_PORT_RESET); @@ -2639,6 +2638,18 @@ static int hub_port_reset(struct usb_hub *hub, int port1, * Some companion controllers don't like it when they mix. */ down_read(&ehci_cf_port_reset_rwsem); + } else if (!warm) { + /* + * If the caller hasn't explicitly requested a warm reset, + * double check and see if one is needed. + */ + status = hub_port_status(hub, port1, + &portstatus, &portchange); + if (status < 0) + goto done; + + if (hub_port_warm_reset_required(hub, portstatus)) + warm = true; } /* Reset the port */ @@ -4690,12 +4701,21 @@ static void hub_events(void) */ if (hub_port_warm_reset_required(hub, portstatus)) { int status; + struct usb_device *udev = + hub->ports[i - 1]->child; dev_dbg(hub_dev, "warm reset port %d\n", i); - status = hub_port_reset(hub, i, NULL, - HUB_BH_RESET_TIME, true); - if (status < 0) - hub_port_disable(hub, i, 1); + if (!udev) { + status = hub_port_reset(hub, i, + NULL, HUB_BH_RESET_TIME, + true); + if (status < 0) + hub_port_disable(hub, i, 1); + } else { + usb_lock_device(udev); + status = usb_reset_device(udev); + usb_unlock_device(udev); + } connect_change = 0; } -- cgit v1.2.3 From c2f60db740f2935a5e8a348298b590f2462e952f Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Mon, 10 Dec 2012 15:43:08 -0800 Subject: USB: Use helper function hub_set_port_link_state Change the code that manually issues a Set Port Feature(Link State) to use the new helper function hub_set_port_link_state(). Signed-off-by: Sarah Sharp Acked-by: Alan Stern --- drivers/usb/core/hub.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index b00f10956b00..be976ee84b8e 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2946,9 +2946,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) /* see 7.1.7.6 */ if (hub_is_superspeed(hub->hdev)) - status = set_port_feature(hub->hdev, - port1 | (USB_SS_PORT_LS_U3 << 3), - USB_PORT_FEAT_LINK_STATE); + status = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_U3); else status = set_port_feature(hub->hdev, port1, USB_PORT_FEAT_SUSPEND); @@ -3118,9 +3116,7 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) /* see 7.1.7.7; affects power usage, but not budgeting */ if (hub_is_superspeed(hub->hdev)) - status = set_port_feature(hub->hdev, - port1 | (USB_SS_PORT_LS_U0 << 3), - USB_PORT_FEAT_LINK_STATE); + status = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_U0); else status = clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_SUSPEND); -- cgit v1.2.3 From 470f0be8aa78034030d3e05580e85ba7d0e26da7 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Tue, 11 Dec 2012 10:14:03 -0800 Subject: USB: Refactor hub_port_wait_reset. Refactor hub_port_wait_reset into a small loop to wait for the port reset to be complete, and then a larger block to deal with the final port status. This patch should not change any current behavior. Signed-off-by: Sarah Sharp Acked-by: Alan Stern --- drivers/usb/core/hub.c | 73 +++++++++++++++++++++++++------------------------- 1 file changed, 37 insertions(+), 36 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index be976ee84b8e..ae10862fb041 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2535,42 +2535,9 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1, return ret; /* The port state is unknown until the reset completes. */ - if ((portstatus & USB_PORT_STAT_RESET)) - goto delay; - - if (hub_port_warm_reset_required(hub, portstatus)) - return -ENOTCONN; - - /* Device went away? */ - if (!(portstatus & USB_PORT_STAT_CONNECTION)) - return -ENOTCONN; - - /* bomb out completely if the connection bounced. A USB 3.0 - * connection may bounce if multiple warm resets were issued, - * but the device may have successfully re-connected. Ignore it. - */ - if (!hub_is_superspeed(hub->hdev) && - (portchange & USB_PORT_STAT_C_CONNECTION)) - return -ENOTCONN; - - if ((portstatus & USB_PORT_STAT_ENABLE)) { - if (!udev) - return 0; - - if (hub_is_wusb(hub)) - udev->speed = USB_SPEED_WIRELESS; - else if (hub_is_superspeed(hub->hdev)) - udev->speed = USB_SPEED_SUPER; - else if (portstatus & USB_PORT_STAT_HIGH_SPEED) - udev->speed = USB_SPEED_HIGH; - else if (portstatus & USB_PORT_STAT_LOW_SPEED) - udev->speed = USB_SPEED_LOW; - else - udev->speed = USB_SPEED_FULL; - return 0; - } + if (!(portstatus & USB_PORT_STAT_RESET)) + break; -delay: /* switch to the long delay after two short delay failures */ if (delay_time >= 2 * HUB_SHORT_RESET_TIME) delay = HUB_LONG_RESET_TIME; @@ -2580,7 +2547,41 @@ delay: port1, warm ? "warm " : "", delay); } - return -EBUSY; + if ((portstatus & USB_PORT_STAT_RESET)) + return -EBUSY; + + if (hub_port_warm_reset_required(hub, portstatus)) + return -ENOTCONN; + + /* Device went away? */ + if (!(portstatus & USB_PORT_STAT_CONNECTION)) + return -ENOTCONN; + + /* bomb out completely if the connection bounced. A USB 3.0 + * connection may bounce if multiple warm resets were issued, + * but the device may have successfully re-connected. Ignore it. + */ + if (!hub_is_superspeed(hub->hdev) && + (portchange & USB_PORT_STAT_C_CONNECTION)) + return -ENOTCONN; + + if (!(portstatus & USB_PORT_STAT_ENABLE)) + return -EBUSY; + + if (!udev) + return 0; + + if (hub_is_wusb(hub)) + udev->speed = USB_SPEED_WIRELESS; + else if (hub_is_superspeed(hub->hdev)) + udev->speed = USB_SPEED_SUPER; + else if (portstatus & USB_PORT_STAT_HIGH_SPEED) + udev->speed = USB_SPEED_HIGH; + else if (portstatus & USB_PORT_STAT_LOW_SPEED) + udev->speed = USB_SPEED_LOW; + else + udev->speed = USB_SPEED_FULL; + return 0; } static void hub_port_finish_reset(struct usb_hub *hub, int port1, -- cgit v1.2.3 From 026630d09ba7b6cd44a43b92ad256c28a9e3ddc2 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Sun, 16 Dec 2012 04:21:31 +0100 Subject: usb: host: xhci: remove unused trb var in xhci_irq() The union xhci_trb *trb variable is defined and assigned inside the xHCI IRQ handler function but is never used. Signed-off-by: Javier Martinez Canillas Signed-off-by: Sarah Sharp --- drivers/usb/host/xhci-ring.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 59fb5c677dbe..f69720983fc7 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2706,13 +2706,11 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); u32 status; - union xhci_trb *trb; u64 temp_64; union xhci_trb *event_ring_deq; dma_addr_t deq; spin_lock(&xhci->lock); - trb = xhci->event_ring->dequeue; /* Check if the xHC generated the interrupt, or the irq is shared */ status = xhci_readl(xhci, &xhci->op_regs->status); if (status == 0xffffffff) -- cgit v1.2.3 From d3eeee6846c9a38b867616905df2327017ed3cd8 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Tue, 20 Nov 2012 13:01:26 +0100 Subject: usb: gadget: file_storage: remove its last pieces This patch removes the last pieces of the file_storage gadget hidden in storage_common behind __maybe_unused bars. The CBI bits have no user on the gadget side. Only file_storage implemented the obsolete protocol. The additional USB3.0 descriptors were served by file_storage, the other gadgets are using composite for this. Acked-by: Michal Nazarewicz Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/storage_common.c | 61 ------------------------------------- 1 file changed, 61 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c index 0e3ae43454a2..4ecbf8496f48 100644 --- a/drivers/usb/gadget/storage_common.c +++ b/drivers/usb/gadget/storage_common.c @@ -93,18 +93,6 @@ /*-------------------------------------------------------------------------*/ -/* CBI Interrupt data structure */ -struct interrupt_data { - u8 bType; - u8 bValue; -}; - -#define CBI_INTERRUPT_DATA_LEN 2 - -/* CBI Accept Device-Specific Command request */ -#define USB_CBI_ADSC_REQUEST 0x00 - - /* Length of a SCSI Command Data Block */ #define MAX_COMMAND_SIZE 16 @@ -385,41 +373,6 @@ static struct usb_ss_ep_comp_descriptor fsg_ss_bulk_out_comp_desc = { /*.bMaxBurst = DYNAMIC, */ }; -static __maybe_unused struct usb_ext_cap_descriptor fsg_ext_cap_desc = { - .bLength = USB_DT_USB_EXT_CAP_SIZE, - .bDescriptorType = USB_DT_DEVICE_CAPABILITY, - .bDevCapabilityType = USB_CAP_TYPE_EXT, - - .bmAttributes = cpu_to_le32(USB_LPM_SUPPORT), -}; - -static __maybe_unused struct usb_ss_cap_descriptor fsg_ss_cap_desc = { - .bLength = USB_DT_USB_SS_CAP_SIZE, - .bDescriptorType = USB_DT_DEVICE_CAPABILITY, - .bDevCapabilityType = USB_SS_CAP_TYPE, - - /* .bmAttributes = LTM is not supported yet */ - - .wSpeedSupported = cpu_to_le16(USB_LOW_SPEED_OPERATION - | USB_FULL_SPEED_OPERATION - | USB_HIGH_SPEED_OPERATION - | USB_5GBPS_OPERATION), - .bFunctionalitySupport = USB_LOW_SPEED_OPERATION, - .bU1devExitLat = USB_DEFAULT_U1_DEV_EXIT_LAT, - .bU2DevExitLat = cpu_to_le16(USB_DEFAULT_U2_DEV_EXIT_LAT), -}; - -static __maybe_unused struct usb_bos_descriptor fsg_bos_desc = { - .bLength = USB_DT_BOS_SIZE, - .bDescriptorType = USB_DT_BOS, - - .wTotalLength = cpu_to_le16(USB_DT_BOS_SIZE - + USB_DT_USB_EXT_CAP_SIZE - + USB_DT_USB_SS_CAP_SIZE), - - .bNumDeviceCaps = 2, -}; - static struct usb_descriptor_header *fsg_ss_function[] = { (struct usb_descriptor_header *) &fsg_intf_desc, (struct usb_descriptor_header *) &fsg_ss_bulk_in_desc, @@ -429,20 +382,6 @@ static struct usb_descriptor_header *fsg_ss_function[] = { NULL, }; -/* Maxpacket and other transfer characteristics vary by speed. */ -static __maybe_unused struct usb_endpoint_descriptor * -fsg_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs, - struct usb_endpoint_descriptor *hs, - struct usb_endpoint_descriptor *ss) -{ - if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER) - return ss; - else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) - return hs; - return fs; -} - - /* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */ static struct usb_string fsg_strings[] = { {FSG_STRING_INTERFACE, fsg_string_interface}, -- cgit v1.2.3 From 8d640ad394d71a2467d0e08a3337fdad828786bb Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Thu, 22 Nov 2012 19:50:34 +0100 Subject: usb: gadget: ncm: make global variable ndp*_opts read only There is ndp16_opts and ndp32_opts which are both global and only one member is ever written. This patch makes the variable read-only and moves the one member that is ever written into the private struct f_ncm. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_ncm.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c index 6c8362f937be..5e7557e23ecc 100644 --- a/drivers/usb/gadget/f_ncm.c +++ b/drivers/usb/gadget/f_ncm.c @@ -56,8 +56,9 @@ struct f_ncm { u8 notify_state; bool is_open; - struct ndp_parser_opts *parser_opts; + const struct ndp_parser_opts *parser_opts; bool is_crc; + u32 ndp_sign; /* * for notification, it is accessed from both @@ -390,8 +391,8 @@ struct ndp_parser_opts { .next_fp_index = 2, \ } -static struct ndp_parser_opts ndp16_opts = INIT_NDP16_OPTS; -static struct ndp_parser_opts ndp32_opts = INIT_NDP32_OPTS; +static const struct ndp_parser_opts ndp16_opts = INIT_NDP16_OPTS; +static const struct ndp_parser_opts ndp32_opts = INIT_NDP32_OPTS; static inline void put_ncm(__le16 **p, unsigned size, unsigned val) { @@ -732,8 +733,7 @@ static int ncm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) default: goto invalid; } - ncm->parser_opts->ndp_sign &= ~NCM_NDP_HDR_CRC_MASK; - ncm->parser_opts->ndp_sign |= ndp_hdr_crc; + ncm->ndp_sign = ncm->parser_opts->ndp_sign | ndp_hdr_crc; value = 0; break; } @@ -875,7 +875,7 @@ static struct sk_buff *ncm_wrap_ntb(struct gether *port, int ndp_align; int ndp_pad; unsigned max_size = ncm->port.fixed_in_len; - struct ndp_parser_opts *opts = ncm->parser_opts; + const struct ndp_parser_opts *opts = ncm->parser_opts; unsigned crc_len = ncm->is_crc ? sizeof(uint32_t) : 0; div = le16_to_cpu(ntb_parameters.wNdpInDivisor); @@ -921,7 +921,7 @@ static struct sk_buff *ncm_wrap_ntb(struct gether *port, tmp = (void *)tmp + ndp_pad; /* NDP */ - put_unaligned_le32(opts->ndp_sign, tmp); /* dwSignature */ + put_unaligned_le32(ncm->ndp_sign, tmp); /* dwSignature */ tmp += 2; /* wLength */ put_unaligned_le16(ncb_len - opts->nth_size - pad, tmp++); @@ -965,7 +965,7 @@ static int ncm_unwrap_ntb(struct gether *port, struct sk_buff *skb2; int ret = -EINVAL; unsigned max_size = le32_to_cpu(ntb_parameters.dwNtbOutMaxSize); - struct ndp_parser_opts *opts = ncm->parser_opts; + const struct ndp_parser_opts *opts = ncm->parser_opts; unsigned crc_len = ncm->is_crc ? sizeof(uint32_t) : 0; int dgram_counter; @@ -1002,7 +1002,7 @@ static int ncm_unwrap_ntb(struct gether *port, /* walk through NDP */ tmp = ((void *)skb->data) + index; - if (get_unaligned_le32(tmp) != opts->ndp_sign) { + if (get_unaligned_le32(tmp) != ncm->ndp_sign) { INFO(port->func.config->cdev, "Wrong NDP SIGN\n"); goto err; } -- cgit v1.2.3 From 2b5080026cc4c29e68642fea2b7e2cc77b2796f3 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Thu, 29 Nov 2012 15:06:58 +0100 Subject: usb: gadget: f_mass_storage: remove unused operations pre_eject and post_eject are not used by anyone. Removing them. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Kyungmin Park Acked-by: Michal Nazarewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_mass_storage.c | 29 +---------------------------- 1 file changed, 1 insertion(+), 28 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index 5d027b3e1ef0..4ce732852ae8 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -246,20 +246,6 @@ struct fsg_operations { * set). */ int (*thread_exits)(struct fsg_common *common); - - /* - * Called prior to ejection. Negative return means error, - * zero means to continue with ejection, positive means not to - * eject. - */ - int (*pre_eject)(struct fsg_common *common, - struct fsg_lun *lun, int num); - /* - * Called after ejection. Negative return means error, zero - * or positive is just a success. - */ - int (*post_eject)(struct fsg_common *common, - struct fsg_lun *lun, int num); }; /* Data shared by all the FSG instances. */ @@ -1374,26 +1360,13 @@ static int do_start_stop(struct fsg_common *common) if (!loej) return 0; - /* Simulate an unload/eject */ - if (common->ops && common->ops->pre_eject) { - int r = common->ops->pre_eject(common, curlun, - curlun - common->luns); - if (unlikely(r < 0)) - return r; - else if (r) - return 0; - } - up_read(&common->filesem); down_write(&common->filesem); fsg_lun_close(curlun); up_write(&common->filesem); down_read(&common->filesem); - return common->ops && common->ops->post_eject - ? min(0, common->ops->post_eject(common, curlun, - curlun - common->luns)) - : 0; + return 0; } static int do_prevent_allow(struct fsg_common *common) -- cgit v1.2.3 From b642435333b23ab01d526bd854d118704434fc88 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sun, 2 Dec 2012 05:33:08 -0500 Subject: usb: gadget: remove unused variable in uac2_pcm_trigger() The variable ep is initialized but never used otherwise, so remove the unused variable. Signed-off-by: Wei Yongjun Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_uac2.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_uac2.c b/drivers/usb/gadget/f_uac2.c index d7da258fa3f6..07fde0505e32 100644 --- a/drivers/usb/gadget/f_uac2.c +++ b/drivers/usb/gadget/f_uac2.c @@ -263,16 +263,12 @@ uac2_pcm_trigger(struct snd_pcm_substream *substream, int cmd) struct audio_dev *agdev = uac2_to_agdev(uac2); struct uac2_rtd_params *prm; unsigned long flags; - struct usb_ep *ep; int err = 0; - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - ep = agdev->in_ep; + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) prm = &uac2->p_prm; - } else { - ep = agdev->out_ep; + else prm = &uac2->c_prm; - } spin_lock_irqsave(&prm->lock, flags); -- cgit v1.2.3 From 98f3a1b90795d7216de0d56157868d174317f91a Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 3 Dec 2012 15:32:36 +0100 Subject: usb: gadget: mass_storage: remove >= 0 check for unsigned type | In file included from drivers/usb/gadget/acm_ms.c:43: | f_mass_storage.c:2199:18: warning: comparison of unsigned expression >= 0 is always true [-Wtautological-compare] | if (common->lun >= 0 && common->lun < common->nluns) | ~~~~~~~~~~~ ^ ~ common->lun is defined as "unsigned int" so its value is always >= 0. It is assigned via cbw->Lun which is defined as u8 so it is also not abused as -1. [ mina86@mina86.com : make lun unsigned int and use %u in DBG() macro for it ] Signed-off-by: Michal Nazarewicz Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_mass_storage.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index 4ce732852ae8..fc5c16ca5e0a 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -1691,7 +1691,7 @@ static int check_command(struct fsg_common *common, int cmnd_size, int needs_medium, const char *name) { int i; - int lun = common->cmnd[1] >> 5; + unsigned int lun = common->cmnd[1] >> 5; static const char dirletter[4] = {'u', 'o', 'i', 'n'}; char hdlen[20]; struct fsg_lun *curlun; @@ -1757,7 +1757,7 @@ static int check_command(struct fsg_common *common, int cmnd_size, /* Check that the LUN values are consistent */ if (common->lun != lun) - DBG(common, "using LUN %d from CBW, not LUN %d from CDB\n", + DBG(common, "using LUN %u from CBW, not LUN %u from CDB\n", common->lun, lun); /* Check the LUN */ @@ -1777,7 +1777,7 @@ static int check_command(struct fsg_common *common, int cmnd_size, */ if (common->cmnd[0] != INQUIRY && common->cmnd[0] != REQUEST_SENSE) { - DBG(common, "unsupported LUN %d\n", common->lun); + DBG(common, "unsupported LUN %u\n", common->lun); return -EINVAL; } } @@ -2169,7 +2169,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh) if (common->data_size == 0) common->data_dir = DATA_DIR_NONE; common->lun = cbw->Lun; - if (common->lun >= 0 && common->lun < common->nluns) + if (common->lun < common->nluns) common->curlun = &common->luns[common->lun]; else common->curlun = NULL; -- cgit v1.2.3 From 8f900a9a6e2691441ad763952d640ac44220e5dc Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 3 Dec 2012 20:07:05 +0100 Subject: usb: gadget: consider link speed for bMaxPower The USB 2.0 specification says that bMaxPower is the maximum power consumption expressed in 2 mA units and the USB 3.0 specification says that it is expressed in 8 mA units. This patch renames bMaxPower to MaxPower and the various /2 and *2 are removed. Before reporting the config descriptor, the proper value is computer based on the speed, all in-tree users are updated. MaxPower is also increased to u16 so we can store the nokia gadget value which is larger than the max value allowed for u8. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 27 +++++++++++++++++++++++---- drivers/usb/gadget/gmidi.c | 2 +- drivers/usb/gadget/nokia.c | 4 ++-- drivers/usb/gadget/webcam.c | 2 +- include/linux/usb/composite.h | 5 +++-- 5 files changed, 30 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 2a6bfe759c29..71475b6d8568 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -320,6 +320,25 @@ int usb_interface_id(struct usb_configuration *config, } EXPORT_SYMBOL_GPL(usb_interface_id); +static u8 encode_bMaxPower(enum usb_device_speed speed, + struct usb_configuration *c) +{ + unsigned val; + + if (c->MaxPower) + val = c->MaxPower; + else + val = CONFIG_USB_GADGET_VBUS_DRAW; + if (!val) + return 0; + switch (speed) { + case USB_SPEED_SUPER: + return DIV_ROUND_UP(val, 8); + default: + return DIV_ROUND_UP(val, 2); + }; +} + static int config_buf(struct usb_configuration *config, enum usb_device_speed speed, void *buf, u8 type) { @@ -339,7 +358,7 @@ static int config_buf(struct usb_configuration *config, c->bConfigurationValue = config->bConfigurationValue; c->iConfiguration = config->iConfiguration; c->bmAttributes = USB_CONFIG_ATT_ONE | config->bmAttributes; - c->bMaxPower = config->bMaxPower ? : (CONFIG_USB_GADGET_VBUS_DRAW / 2); + c->bMaxPower = encode_bMaxPower(speed, config); /* There may be e.g. OTG descriptors */ if (config->descriptors) { @@ -656,7 +675,7 @@ static int set_config(struct usb_composite_dev *cdev, } /* when we return, be sure our power usage is valid */ - power = c->bMaxPower ? (2 * c->bMaxPower) : CONFIG_USB_GADGET_VBUS_DRAW; + power = c->MaxPower ? c->MaxPower : CONFIG_USB_GADGET_VBUS_DRAW; done: usb_gadget_vbus_draw(gadget, power); if (result >= 0 && cdev->delayed_status) @@ -1518,10 +1537,10 @@ composite_resume(struct usb_gadget *gadget) f->resume(f); } - maxpower = cdev->config->bMaxPower; + maxpower = cdev->config->MaxPower; usb_gadget_vbus_draw(gadget, maxpower ? - (2 * maxpower) : CONFIG_USB_GADGET_VBUS_DRAW); + maxpower : CONFIG_USB_GADGET_VBUS_DRAW); } cdev->suspended = 0; diff --git a/drivers/usb/gadget/gmidi.c b/drivers/usb/gadget/gmidi.c index 881aab86ae99..e879e2c9f461 100644 --- a/drivers/usb/gadget/gmidi.c +++ b/drivers/usb/gadget/gmidi.c @@ -125,7 +125,7 @@ static struct usb_configuration midi_config = { .bConfigurationValue = 1, /* .iConfiguration = DYNAMIC */ .bmAttributes = USB_CONFIG_ATT_ONE, - .bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2, + .MaxPower = CONFIG_USB_GADGET_VBUS_DRAW, }; static int __init midi_bind_config(struct usb_configuration *c) diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c index 661600abace8..1475d663b527 100644 --- a/drivers/usb/gadget/nokia.c +++ b/drivers/usb/gadget/nokia.c @@ -133,7 +133,7 @@ static struct usb_configuration nokia_config_500ma_driver = { .bConfigurationValue = 1, /* .iConfiguration = DYNAMIC */ .bmAttributes = USB_CONFIG_ATT_ONE, - .bMaxPower = 250, /* 500mA */ + .MaxPower = 500, }; static struct usb_configuration nokia_config_100ma_driver = { @@ -141,7 +141,7 @@ static struct usb_configuration nokia_config_100ma_driver = { .bConfigurationValue = 2, /* .iConfiguration = DYNAMIC */ .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = 50, /* 100 mA */ + .MaxPower = 100, }; static int __init nokia_bind(struct usb_composite_dev *cdev) diff --git a/drivers/usb/gadget/webcam.c b/drivers/usb/gadget/webcam.c index 69cf5c2cd335..8cef1e658c29 100644 --- a/drivers/usb/gadget/webcam.c +++ b/drivers/usb/gadget/webcam.c @@ -336,7 +336,7 @@ static struct usb_configuration webcam_config_driver = { .bConfigurationValue = 1, .iConfiguration = 0, /* dynamic */ .bmAttributes = USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2, + .MaxPower = CONFIG_USB_GADGET_VBUS_DRAW, }; static int /* __init_or_exit */ diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index b09c37e04a91..dc512c9432d7 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -184,7 +184,8 @@ int config_ep_by_speed(struct usb_gadget *g, struct usb_function *f, * @bConfigurationValue: Copied into configuration descriptor. * @iConfiguration: Copied into configuration descriptor. * @bmAttributes: Copied into configuration descriptor. - * @bMaxPower: Copied into configuration descriptor. + * @MaxPower: Power consumtion in mA. Used to compute bMaxPower in the + * configuration descriptor after considering the bus speed. * @cdev: assigned by @usb_add_config() before calling @bind(); this is * the device associated with this configuration. * @@ -230,7 +231,7 @@ struct usb_configuration { u8 bConfigurationValue; u8 iConfiguration; u8 bmAttributes; - u8 bMaxPower; + u16 MaxPower; struct usb_composite_dev *cdev; -- cgit v1.2.3 From 32c9cf22fccb371745bde98e1da1c3aeb4bb9f36 Mon Sep 17 00:00:00 2001 From: Armando Visconti Date: Thu, 13 Dec 2012 15:11:19 +0100 Subject: usb: gadget zero: avoid unnecessary reinit of data in f_sourcesink In the IN case, since the USB request is allocated only when the source/sink function is started and never freed, the USB ept buffer needs to be initialized only at the beginning. This change results into a more performant g_zero module, especially when 'pattern=1' is selected. Signed-off-by: Armando Visconti Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_sourcesink.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c index 102d49beb9df..de608864c6db 100644 --- a/drivers/usb/gadget/f_sourcesink.c +++ b/drivers/usb/gadget/f_sourcesink.c @@ -531,8 +531,7 @@ static void source_sink_complete(struct usb_ep *ep, struct usb_request *req) check_read_data(ss, req); if (pattern != 2) memset(req->buf, 0x55, req->length); - } else - reinit_write_data(ep, req); + } break; /* this endpoint is normally active while we're configured */ -- cgit v1.2.3 From 348409a267e441c46345f325db37e9824fcf675e Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 21 Dec 2012 17:57:12 -0800 Subject: usb: gadget: at91_udc: don't use [delayed_]work_pending() There's no need to test whether a (delayed) work item in pending before queueing, flushing or cancelling it. Most uses are unnecessary and quite a few of them are buggy. Remove unnecessary pending tests from at91_udc. Only compile tested. Signed-off-by: Tejun Heo Cc: Andrew Victor Cc: Jean-Christophe Plagniol-Villard Cc: linux-usb@vger.kernel.org Acked-by: Nicolas Ferre Signed-off-by: Felipe Balbi --- drivers/usb/gadget/at91_udc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index f4a21f6f081f..e81d8a223f76 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -1621,8 +1621,7 @@ static void at91_vbus_timer(unsigned long data) * bus such as i2c or spi which may sleep, so schedule some work * to read the vbus gpio */ - if (!work_pending(&udc->vbus_timer_work)) - schedule_work(&udc->vbus_timer_work); + schedule_work(&udc->vbus_timer_work); } static int at91_start(struct usb_gadget *gadget, -- cgit v1.2.3 From d2aec37c3b7aa029ffb4ac5fa3d1ee3453d4d0a4 Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Sun, 23 Dec 2012 19:08:04 +0100 Subject: USB: gadget: at91_adc: fix pullup pin validity check Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Cc: linux-usb@vger.kernel.org Signed-off-by: Felipe Balbi --- drivers/usb/gadget/at91_udc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index e81d8a223f76..10f45fa01abd 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -1738,7 +1738,7 @@ static int at91udc_probe(struct platform_device *pdev) /* rm9200 needs manual D+ pullup; off by default */ if (cpu_is_at91rm9200()) { - if (gpio_is_valid(udc->board.pullup_pin)) { + if (!gpio_is_valid(udc->board.pullup_pin)) { DBG("no D+ pullup?\n"); retval = -ENODEV; goto fail0; -- cgit v1.2.3 From 924d2532ab1897b034fa5477aea661732b91d748 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Mon, 7 Jan 2013 10:01:53 +0530 Subject: usb: gadget: s3c-hsudc: Use devm_regulator_bulk_get devm_regulator_bulk_get is device managed and makes exit code simpler. Signed-off-by: Sachin Kamat Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c-hsudc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c index 52379b11f080..d2b8791bba28 100644 --- a/drivers/usb/gadget/s3c-hsudc.c +++ b/drivers/usb/gadget/s3c-hsudc.c @@ -1286,7 +1286,7 @@ static int s3c_hsudc_probe(struct platform_device *pdev) for (i = 0; i < ARRAY_SIZE(hsudc->supplies); i++) hsudc->supplies[i].supply = s3c_hsudc_supply_names[i]; - ret = regulator_bulk_get(dev, ARRAY_SIZE(hsudc->supplies), + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(hsudc->supplies), hsudc->supplies); if (ret != 0) { dev_err(dev, "failed to request supplies: %d\n", ret); @@ -1367,7 +1367,6 @@ err_res: if (!IS_ERR_OR_NULL(hsudc->transceiver)) usb_put_phy(hsudc->transceiver); - regulator_bulk_free(ARRAY_SIZE(hsudc->supplies), hsudc->supplies); err_supplies: return ret; } -- cgit v1.2.3 From cd76213eb57c505d3df6fa3134a6b3bb5394a90c Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Tue, 8 Jan 2013 14:27:00 +0530 Subject: usb: gadget: s3c-hsotg: Use devm_regulator_bulk_get API devm_regulator_bulk_get is device managed and saves some cleanup and exit code. Signed-off-by: Sachin Kamat Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c-hsotg.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index 141971d9051e..833d85befa3f 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -3573,7 +3573,7 @@ static int s3c_hsotg_probe(struct platform_device *pdev) for (i = 0; i < ARRAY_SIZE(hsotg->supplies); i++) hsotg->supplies[i].supply = s3c_hsotg_supply_names[i]; - ret = regulator_bulk_get(dev, ARRAY_SIZE(hsotg->supplies), + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(hsotg->supplies), hsotg->supplies); if (ret) { dev_err(dev, "failed to request supplies: %d\n", ret); @@ -3663,8 +3663,6 @@ err_ep_mem: kfree(eps); err_supplies: s3c_hsotg_phy_disable(hsotg); - regulator_bulk_free(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); - err_clk: clk_disable_unprepare(hsotg->clk); @@ -3689,7 +3687,6 @@ static int s3c_hsotg_remove(struct platform_device *pdev) } s3c_hsotg_phy_disable(hsotg); - regulator_bulk_free(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); clk_disable_unprepare(hsotg->clk); -- cgit v1.2.3 From afd2e186bd7e58dc9d298ff5fb5a2fc30578867e Mon Sep 17 00:00:00 2001 From: Michal Nazarewicz Date: Wed, 9 Jan 2013 10:17:47 +0100 Subject: usb: gadget: FunctionFS: Use kstrtoul() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit kstrtoul() checks for overflow which simple_strtoul() does not pluss it has “*end == 0” check in it as well. As a side effect, a new line character is now accepted, but this should not be an issue. Signed-off-by: Michal Nazarewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_fs.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 4a6961c517f2..449186c9fd6c 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -1103,8 +1103,8 @@ static int ffs_fs_parse_opts(struct ffs_sb_fill_data *data, char *opts) return 0; for (;;) { - char *end, *eq, *comma; unsigned long value; + char *eq, *comma; /* Option limit */ comma = strchr(opts, ','); @@ -1120,8 +1120,7 @@ static int ffs_fs_parse_opts(struct ffs_sb_fill_data *data, char *opts) *eq = 0; /* Parse value */ - value = simple_strtoul(eq + 1, &end, 0); - if (unlikely(*end != ',' && *end != 0)) { + if (kstrtoul(eq + 1, 0, &value)) { pr_err("%s: invalid value: %s\n", opts, eq + 1); return -EINVAL; } -- cgit v1.2.3 From 80ab72e176d6691fef30ac59e0b5ad16d4180ec5 Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Sun, 23 Dec 2012 01:24:51 +0200 Subject: usb: musb: omap2430: fix the readiness check in omap_musb_mailbox The check in omap_musb_mailbox does not properly check if the module has been fully initialized. The patch fixes that, and the kernel panic below: $ modprobe twl4030-usb [ 13.924743] twl4030_usb twl4030-usb.33: HW_CONDITIONS 0xe0/224; link 3 [ 13.940307] Unable to handle kernel NULL pointer dereference at virtual address 00000004 [ 13.948883] pgd = ef27c000 [ 13.951751] [00000004] *pgd=af256831, *pte=00000000, *ppte=00000000 [ 13.958374] Internal error: Oops: 17 [#1] ARM [ 13.962921] Modules linked in: twl4030_usb(+) omap2430 libcomposite [ 13.969543] CPU: 0 Not tainted (3.8.0-rc1-n9xx-11758-ge37a37c-dirty #6) [ 13.976867] PC is at omap_musb_mailbox+0x18/0x54 [omap2430] [ 13.982727] LR is at twl4030_usb_probe+0x240/0x354 [twl4030_usb] [ 13.989013] pc : [] lr : [] psr: 60000013 [ 13.989013] sp : ef273cf0 ip : ef273d08 fp : ef273d04 [ 14.001068] r10: bf01b000 r9 : bf0191d8 r8 : 00000001 [ 14.006530] r7 : 00000000 r6 : ef140e10 r5 : 00000003 r4 : 00000000 [ 14.013397] r3 : bf0142dc r2 : 00000006 r1 : 00000000 r0 : 00000003 [ 14.020233] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 14.027740] Control: 10c5387d Table: af27c019 DAC: 00000015 [ 14.033752] Process modprobe (pid: 616, stack limit = 0xef272238) [ 14.040161] Stack: (0xef273cf0 to 0xef274000) [ 14.044708] 3ce0: ef254310 00000001 ef273d34 ef273d08 [ 14.053314] 3d00: bf018958 bf013b60 bf0190a4 ef254310 c0101550 c0c3a138 ef140e10 ef140e44 [ 14.061889] 3d20: bf019150 00000001 ef273d44 ef273d38 c019890c bf018724 ef273d64 ef273d48 [ 14.070495] 3d40: c01974fc c01988f8 ef140e10 bf019150 ef140e44 00000000 ef273d84 ef273d68 [ 14.079071] 3d60: c0197728 c019748c c0197694 00000000 bf019150 c0197694 ef273dac ef273d88 [ 14.087677] 3d80: c0195c38 c01976a0 ef03610c ef143eb0 c0128954 ef254780 bf019150 c0b19548 [ 14.096252] 3da0: ef273dbc ef273db0 c0197098 c0195bf0 ef273dec ef273dc0 c0196c98 c0197080 [ 14.104858] 3dc0: bf0190a4 c0b27bc0 ef273dec bf019150 bf019190 c0b27bc0 ef272000 00000001 [ 14.113433] 3de0: ef273e14 ef273df0 c0197c18 c0196b30 ef273f48 bf019190 c0b27bc0 ef272000 [ 14.122039] 3e00: 00000001 bf01b000 ef273e24 ef273e18 c0198b28 c0197ba4 ef273e34 ef273e28 [ 14.130615] 3e20: bf01b014 c0198ae8 ef273e8c ef273e38 c0008918 bf01b00c c004f730 c012ba1c [ 14.139221] 3e40: ef273e74 00000000 c00505b0 c004f72c 00000000 ef273e60 ef273f48 bf019190 [ 14.147796] 3e60: 00000001 ef273f48 bf019190 00000001 ef286340 00000001 bf0191d8 c0065414 [ 14.156402] 3e80: ef273f44 ef273e90 c0067754 c00087fc bf01919c 00007fff c0064794 00000000 [ 14.164978] 3ea0: ef273ecc f0064000 00000001 ef272000 ef272000 00067f39 bf0192b0 bf01919c [ 14.173583] 3ec0: ef273f0c ef273ed0 c00a6bf0 c00a53fc ff000000 000000d2 c0067dc8 00000000 [ 14.182159] 3ee0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 14.190765] 3f00: 00000000 00000000 00000000 00000000 00000000 00000000 ffffffff 00002968 [ 14.199340] 3f20: 00080878 00067f39 00000080 c000e2e8 ef272000 00000000 ef273fa4 ef273f48 [ 14.207946] 3f40: c0067e54 c0066188 f0064000 00002968 f0065530 f0065463 f0065fb0 000012c4 [ 14.216522] 3f60: 00001664 00000000 00000000 00000000 00000014 00000015 0000000c 00000000 [ 14.225128] 3f80: 00000008 00000000 00000000 00080370 00080878 0007422c 00000000 ef273fa8 [ 14.233703] 3fa0: c000e140 c0067d80 00080370 00080878 00080878 00002968 00067f39 00000000 [ 14.242309] 3fc0: 00080370 00080878 0007422c 00000080 00074030 00067f39 bec7aef8 00000000 [ 14.250885] 3fe0: b6f05300 bec7ab68 0000e93c b6f05310 60000010 00080878 af7fe821 af7fec21 [ 14.259460] Backtrace: [ 14.262054] [] (omap_musb_mailbox+0x0/0x54 [omap2430]) from [] (twl4030_usb_probe+0x240/0x354 [twl4030_usb]) [ 14.274200] r5:00000001 r4:ef254310 [ 14.277984] [] (twl4030_usb_probe+0x0/0x354 [twl4030_usb]) from [] (platform_drv_probe+0x20/0x24) [ 14.289123] r8:00000001 r7:bf019150 r6:ef140e44 r5:ef140e10 r4:c0c3a138 [ 14.296203] [] (platform_drv_probe+0x0/0x24) from [] (driver_probe_device+0x7c/0x214) [ 14.306243] [] (driver_probe_device+0x0/0x214) from [] (__driver_attach+0x94/0x98) [ 14.316009] r7:00000000 r6:ef140e44 r5:bf019150 r4:ef140e10 [ 14.321990] [] (__driver_attach+0x0/0x98) from [] (bus_for_each_dev+0x54/0x88) [ 14.331390] r6:c0197694 r5:bf019150 r4:00000000 r3:c0197694 [ 14.337371] [] (bus_for_each_dev+0x0/0x88) from [] (driver_attach+0x24/0x28) [ 14.346588] r6:c0b19548 r5:bf019150 r4:ef254780 [ 14.351440] [] (driver_attach+0x0/0x28) from [] (bus_add_driver+0x174/0x244) [ 14.360687] [] (bus_add_driver+0x0/0x244) from [] (driver_register+0x80/0x154) [ 14.370086] r8:00000001 r7:ef272000 r6:c0b27bc0 r5:bf019190 r4:bf019150 [ 14.377136] [] (driver_register+0x0/0x154) from [] (platform_driver_register+0x4c/0x60) [ 14.387390] [] (platform_driver_register+0x0/0x60) from [] (twl4030_usb_init+0x14/0x1c [twl4030_usb]) [ 14.398895] [] (twl4030_usb_init+0x0/0x1c [twl4030_usb]) from [] (do_one_initcall+0x128/0x1a8) [ 14.409790] [] (do_one_initcall+0x0/0x1a8) from [] (load_module+0x15d8/0x1bf8) [ 14.419189] [] (load_module+0x0/0x1bf8) from [] (sys_init_module+0xe0/0xf4) [ 14.428344] [] (sys_init_module+0x0/0xf4) from [] (ret_fast_syscall+0x0/0x30) [ 14.437652] r6:0007422c r5:00080878 r4:00080370 [ 14.442504] Code: e24cb004 e59f3038 e1a05000 e593401c (e5940004) [ 14.448944] ---[ end trace dbf47e5bc5ba03c2 ]--- [ 14.453826] Kernel panic - not syncing: Fatal exception Signed-off-by: Aaro Koskinen Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index da00af460794..c293dbeb8b24 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -255,11 +255,11 @@ static inline void omap2430_low_level_init(struct musb *musb) void omap_musb_mailbox(enum omap_musb_vbus_id_status status) { struct omap2430_glue *glue = _glue; - struct musb *musb = glue_to_musb(glue); - glue->status = status; - if (!musb) { - dev_err(glue->dev, "musb core is not yet ready\n"); + if (glue && glue_to_musb(glue)) { + glue->status = status; + } else { + pr_err("%s: musb core is not yet ready\n", __func__); return; } -- cgit v1.2.3 From 7e56e621ce9cf4604694c969087456aced338be6 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Mon, 19 Nov 2012 17:03:15 +0530 Subject: usb: musb: dsps: Remove duplicate inclusion of linux/of.h linux/of.h was included twice. Signed-off-by: Sachin Kamat Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_dsps.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index e6f2ae8368bb..dd1392b75f57 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -31,7 +31,6 @@ #include #include -#include #include #include #include -- cgit v1.2.3 From bb3a2ef2eb8cfaea335dcb3426350df7f3d48069 Mon Sep 17 00:00:00 2001 From: supriya karanth Date: Thu, 6 Dec 2012 11:12:48 +0530 Subject: usb: musb: set TXMAXP and AUTOSET for full speed bulk in device mode The TXMAXP register is not set correctly for full speed bulk case when the can_bulk_split() is used. Without this PIO transfers will not take place correctly The "mult" factor needs to be updated correctly for the can_bulk_split() case The AUTOSET bit in the TXCSR is not being set if the "mult" factor is greater than 0 for the High Bandwidth ISO case. But the "mult" factor is also greater than 0 in case of Full speed bulk transfers with the packet splitting in TXMAXP register Without the AUTOSET the DMA transfers will not progress in mode1 [ balbi@ti.com : add braces to both branches ] Signed-off-by: supriya karanth Signed-off-by: Praveena NADAHALLY Acked-by: Linus Walleij Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_gadget.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 876787438c2f..be18537c5f14 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -408,7 +408,19 @@ static void txstate(struct musb *musb, struct musb_request *req) csr |= (MUSB_TXCSR_DMAENAB | MUSB_TXCSR_DMAMODE | MUSB_TXCSR_MODE); - if (!musb_ep->hb_mult) + /* + * Enable Autoset according to table + * below + * bulk_split hb_mult Autoset_Enable + * 0 0 Yes(Normal) + * 0 >0 No(High BW ISO) + * 1 0 Yes(HS bulk) + * 1 >0 Yes(FS bulk) + */ + if (!musb_ep->hb_mult || + (musb_ep->hb_mult && + can_bulk_split(musb, + musb_ep->type))) csr |= MUSB_TXCSR_AUTOSET; } csr &= ~MUSB_TXCSR_P_UNDERRUN; @@ -1110,11 +1122,15 @@ static int musb_gadget_enable(struct usb_ep *ep, /* Set TXMAXP with the FIFO size of the endpoint * to disable double buffering mode. */ - if (musb->double_buffer_not_ok) + if (musb->double_buffer_not_ok) { musb_writew(regs, MUSB_TXMAXP, hw_ep->max_packet_sz_tx); - else + } else { + if (can_bulk_split(musb, musb_ep->type)) + musb_ep->hb_mult = (hw_ep->max_packet_sz_tx / + musb_ep->packet_sz) - 1; musb_writew(regs, MUSB_TXMAXP, musb_ep->packet_sz | (musb_ep->hb_mult << 11)); + } csr = MUSB_TXCSR_MODE | MUSB_TXCSR_CLRDATATOG; if (musb_readw(regs, MUSB_TXCSR) -- cgit v1.2.3 From f27862819350d2c1a679b690b5b3559e632e81eb Mon Sep 17 00:00:00 2001 From: supriya karanth Date: Thu, 6 Dec 2012 11:16:23 +0530 Subject: usb: musb: set AUTOSET for full speed bulk DMA transfer in host mode The "mult" factor is not updated properly for the can_bulk_split() case. The AUTOSET bit in the TXCSR is not being set if the "mult" factor is greater than 1 for the High Bandwidth ISO case. But the "mult" factor is also greater than 1 in case of Full speed bulk transfers with the packet splitting in TXMAXP register enabled with can_bulk_split(). Without the AUTOSET the DMA transfers will not progress in mode1 [ balbi@ti.com : fix braces placement ] Signed-off-by: supriya karanth Signed-off-by: Praveena NADAHALLY Acked-by: Linus Walleij Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_host.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index e9f0fd9ddd2d..cf3705fd78c8 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -634,7 +634,17 @@ static bool musb_tx_dma_program(struct dma_controller *dma, mode = 1; csr |= MUSB_TXCSR_DMAMODE | MUSB_TXCSR_DMAENAB; /* autoset shouldn't be set in high bandwidth */ - if (qh->hb_mult == 1) + /* + * Enable Autoset according to table + * below + * bulk_split hb_mult Autoset_Enable + * 0 1 Yes(Normal) + * 0 >1 No(High BW ISO) + * 1 1 Yes(HS bulk) + * 1 >1 Yes(FS bulk) + */ + if (qh->hb_mult == 1 || (qh->hb_mult > 1 && + can_bulk_split(hw_ep->musb, qh->type))) csr |= MUSB_TXCSR_AUTOSET; } else { mode = 0; @@ -791,17 +801,19 @@ static void musb_ep_program(struct musb *musb, u8 epnum, /* protocol/endpoint/interval/NAKlimit */ if (epnum) { musb_writeb(epio, MUSB_TXTYPE, qh->type_reg); - if (musb->double_buffer_not_ok) + if (musb->double_buffer_not_ok) { musb_writew(epio, MUSB_TXMAXP, hw_ep->max_packet_sz_tx); - else if (can_bulk_split(musb, qh->type)) + } else if (can_bulk_split(musb, qh->type)) { + qh->hb_mult = hw_ep->max_packet_sz_tx + / packet_sz; musb_writew(epio, MUSB_TXMAXP, packet_sz - | ((hw_ep->max_packet_sz_tx / - packet_sz) - 1) << 11); - else + | ((qh->hb_mult) - 1) << 11); + } else { musb_writew(epio, MUSB_TXMAXP, qh->maxpacket | ((qh->hb_mult - 1) << 11)); + } musb_writeb(epio, MUSB_TXINTERVAL, qh->intv_reg); } else { musb_writeb(epio, MUSB_NAKLIMIT0, qh->intv_reg); -- cgit v1.2.3 From 6a099c63650e50ebf7d1259b859a3d230aec4207 Mon Sep 17 00:00:00 2001 From: Dongjin Kim Date: Sat, 8 Dec 2012 05:18:44 +0900 Subject: USB: misc: Add USB3503 High-Speed Hub Controller This patch adds new driver of SMSC USB3503 USB 2.0 hub controller with HSIC upstream connectivity and three USB 2.0 downstream ports. The specification can be found from 'http://www.smsc.com/index.php?tid=295&pid=325'. The current version have been tested very basic features switching the modes, HUB-MODE and STANDBY-MODE. Signed-off-by: Dongjin Kim Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/Kconfig | 6 + drivers/usb/misc/Makefile | 1 + drivers/usb/misc/usb3503.c | 303 ++++++++++++++++++++++++++++++++++ include/linux/platform_data/usb3503.h | 19 +++ 4 files changed, 329 insertions(+) create mode 100644 drivers/usb/misc/usb3503.c create mode 100644 include/linux/platform_data/usb3503.h (limited to 'drivers') diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig index fecde69bfa7d..3b1a3f4ec5e9 100644 --- a/drivers/usb/misc/Kconfig +++ b/drivers/usb/misc/Kconfig @@ -250,3 +250,9 @@ config USB_EZUSB_FX2 help Say Y here if you need EZUSB device support. (Cypress FX/FX2/FX2LP microcontrollers) + +config USB_HSIC_USB3503 + tristate "USB3503 HSIC to USB20 Driver" + depends on I2C + help + This option enables support for SMSC USB3503 HSIC to USB 2.0 Driver. diff --git a/drivers/usb/misc/Makefile b/drivers/usb/misc/Makefile index 3e99a643294b..3e1bd70b06ea 100644 --- a/drivers/usb/misc/Makefile +++ b/drivers/usb/misc/Makefile @@ -26,5 +26,6 @@ obj-$(CONFIG_USB_TRANCEVIBRATOR) += trancevibrator.o obj-$(CONFIG_USB_USS720) += uss720.o obj-$(CONFIG_USB_SEVSEG) += usbsevseg.o obj-$(CONFIG_USB_YUREX) += yurex.o +obj-$(CONFIG_USB_HSIC_USB3503) += usb3503.o obj-$(CONFIG_USB_SISUSBVGA) += sisusbvga/ diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c new file mode 100644 index 000000000000..796d58c95b63 --- /dev/null +++ b/drivers/usb/misc/usb3503.c @@ -0,0 +1,303 @@ +/* + * Driver for SMSC USB3503 USB 2.0 hub controller driver + * + * Copyright (c) 2012-2013 Dongjin Kim (tobetter@gmail.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include +#include + +#define USB3503_VIDL 0x00 +#define USB3503_VIDM 0x01 +#define USB3503_PIDL 0x02 +#define USB3503_PIDM 0x03 +#define USB3503_DIDL 0x04 +#define USB3503_DIDM 0x05 + +#define USB3503_CFG1 0x06 +#define USB3503_SELF_BUS_PWR (1 << 7) + +#define USB3503_CFG2 0x07 +#define USB3503_CFG3 0x08 +#define USB3503_NRD 0x09 + +#define USB3503_PDS 0x0a +#define USB3503_PORT1 (1 << 1) +#define USB3503_PORT2 (1 << 2) +#define USB3503_PORT3 (1 << 3) + +#define USB3503_SP_ILOCK 0xe7 +#define USB3503_SPILOCK_CONNECT (1 << 1) +#define USB3503_SPILOCK_CONFIG (1 << 0) + +#define USB3503_CFGP 0xee +#define USB3503_CLKSUSP (1 << 7) + +struct usb3503 { + enum usb3503_mode mode; + struct i2c_client *client; + int gpio_intn; + int gpio_reset; + int gpio_connect; +}; + +static int usb3503_write_register(struct i2c_client *client, + char reg, char data) +{ + return i2c_smbus_write_byte_data(client, reg, data); +} + +static int usb3503_read_register(struct i2c_client *client, char reg) +{ + return i2c_smbus_read_byte_data(client, reg); +} + +static int usb3503_set_bits(struct i2c_client *client, char reg, char req) +{ + int err; + + err = usb3503_read_register(client, reg); + if (err < 0) + return err; + + err = usb3503_write_register(client, reg, err | req); + if (err < 0) + return err; + + return 0; +} + +static int usb3503_clear_bits(struct i2c_client *client, char reg, char req) +{ + int err; + + err = usb3503_read_register(client, reg); + if (err < 0) + return err; + + err = usb3503_write_register(client, reg, err & ~req); + if (err < 0) + return err; + + return 0; +} + +static int usb3503_reset(int gpio_reset, int state) +{ + if (gpio_is_valid(gpio_reset)) + gpio_set_value(gpio_reset, state); + + /* Wait RefClk when RESET_N is released, otherwise Hub will + * not transition to Hub Communication Stage. + */ + if (state) + msleep(100); + + return 0; +} + +static int usb3503_switch_mode(struct usb3503 *hub, enum usb3503_mode mode) +{ + struct i2c_client *i2c = hub->client; + int err = 0; + + switch (mode) { + case USB3503_MODE_HUB: + usb3503_reset(hub->gpio_reset, 1); + + /* SP_ILOCK: set connect_n, config_n for config */ + err = usb3503_write_register(i2c, USB3503_SP_ILOCK, + (USB3503_SPILOCK_CONNECT + | USB3503_SPILOCK_CONFIG)); + if (err < 0) { + dev_err(&i2c->dev, "SP_ILOCK failed (%d)\n", err); + goto err_hubmode; + } + + /* PDS : Port2,3 Disable For Self Powered Operation */ + err = usb3503_set_bits(i2c, USB3503_PDS, + (USB3503_PORT2 | USB3503_PORT3)); + if (err < 0) { + dev_err(&i2c->dev, "PDS failed (%d)\n", err); + goto err_hubmode; + } + + /* CFG1 : SELF_BUS_PWR -> Self-Powerd operation */ + err = usb3503_set_bits(i2c, USB3503_CFG1, USB3503_SELF_BUS_PWR); + if (err < 0) { + dev_err(&i2c->dev, "CFG1 failed (%d)\n", err); + goto err_hubmode; + } + + /* SP_LOCK: clear connect_n, config_n for hub connect */ + err = usb3503_clear_bits(i2c, USB3503_SP_ILOCK, + (USB3503_SPILOCK_CONNECT + | USB3503_SPILOCK_CONFIG)); + if (err < 0) { + dev_err(&i2c->dev, "SP_ILOCK failed (%d)\n", err); + goto err_hubmode; + } + + hub->mode = mode; + dev_info(&i2c->dev, "switched to HUB mode\n"); + break; + + case USB3503_MODE_STANDBY: + usb3503_reset(hub->gpio_reset, 0); + + hub->mode = mode; + dev_info(&i2c->dev, "switched to STANDBY mode\n"); + break; + + default: + dev_err(&i2c->dev, "unknown mode is request\n"); + err = -EINVAL; + break; + } + +err_hubmode: + return err; +} + +int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) +{ + struct usb3503_platform_data *pdata = i2c->dev.platform_data; + struct usb3503 *hub; + int err; + + hub = kzalloc(sizeof(struct usb3503), GFP_KERNEL); + if (!hub) { + dev_err(&i2c->dev, "private data alloc fail\n"); + return -ENOMEM; + } + + i2c_set_clientdata(i2c, hub); + hub->client = i2c; + + if (!pdata) { + dev_dbg(&i2c->dev, "missing platform data\n"); + } else { + hub->gpio_intn = pdata->gpio_intn; + hub->gpio_connect = pdata->gpio_connect; + hub->gpio_reset = pdata->gpio_reset; + hub->mode = pdata->initial_mode; + } + + if (gpio_is_valid(hub->gpio_intn)) { + err = gpio_request_one(hub->gpio_intn, + GPIOF_OUT_INIT_HIGH, "usb3503 intn"); + if (err) { + dev_err(&i2c->dev, + "unable to request GPIO %d as connect pin (%d)\n", + hub->gpio_intn, err); + goto err_gpio_intn; + } + } + + if (gpio_is_valid(hub->gpio_connect)) { + err = gpio_request_one(hub->gpio_connect, + GPIOF_OUT_INIT_HIGH, "usb3503 connect"); + if (err) { + dev_err(&i2c->dev, + "unable to request GPIO %d as connect pin (%d)\n", + hub->gpio_connect, err); + goto err_gpio_connect; + } + } + + if (gpio_is_valid(hub->gpio_reset)) { + err = gpio_request_one(hub->gpio_reset, + GPIOF_OUT_INIT_LOW, "usb3503 reset"); + if (err) { + dev_err(&i2c->dev, + "unable to request GPIO %d as reset pin (%d)\n", + hub->gpio_reset, err); + goto err_gpio_reset; + } + } + + usb3503_switch_mode(hub, pdata->initial_mode); + + dev_info(&i2c->dev, "%s: probed on %s mode\n", __func__, + (hub->mode == USB3503_MODE_HUB) ? "hub" : "standby"); + + return 0; + +err_gpio_reset: + if (gpio_is_valid(hub->gpio_connect)) + gpio_free(hub->gpio_connect); +err_gpio_connect: + if (gpio_is_valid(hub->gpio_intn)) + gpio_free(hub->gpio_intn); +err_gpio_intn: + kfree(hub); + + return err; +} + +static int usb3503_remove(struct i2c_client *i2c) +{ + struct usb3503 *hub = i2c_get_clientdata(i2c); + + if (gpio_is_valid(hub->gpio_intn)) + gpio_free(hub->gpio_intn); + if (gpio_is_valid(hub->gpio_connect)) + gpio_free(hub->gpio_connect); + if (gpio_is_valid(hub->gpio_reset)) + gpio_free(hub->gpio_reset); + + kfree(hub); + + return 0; +} + +static const struct i2c_device_id usb3503_id[] = { + { USB3503_I2C_NAME, 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, usb3503_id); + +static struct i2c_driver usb3503_driver = { + .driver = { + .name = USB3503_I2C_NAME, + }, + .probe = usb3503_probe, + .remove = usb3503_remove, + .id_table = usb3503_id, +}; + +static int __init usb3503_init(void) +{ + return i2c_add_driver(&usb3503_driver); +} + +static void __exit usb3503_exit(void) +{ + i2c_del_driver(&usb3503_driver); +} + +module_init(usb3503_init); +module_exit(usb3503_exit); + +MODULE_AUTHOR("Dongjin Kim "); +MODULE_DESCRIPTION("USB3503 USB HUB driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/platform_data/usb3503.h b/include/linux/platform_data/usb3503.h new file mode 100644 index 000000000000..85dcc709f7e9 --- /dev/null +++ b/include/linux/platform_data/usb3503.h @@ -0,0 +1,19 @@ +#ifndef __USB3503_H__ +#define __USB3503_H__ + +#define USB3503_I2C_NAME "usb3503" + +enum usb3503_mode { + USB3503_MODE_UNKNOWN, + USB3503_MODE_HUB, + USB3503_MODE_STANDBY, +}; + +struct usb3503_platform_data { + enum usb3503_mode initial_mode; + int gpio_intn; + int gpio_connect; + int gpio_reset; +}; + +#endif -- cgit v1.2.3 From aa8f612370edf2fd29ec137f7070b11d98df539b Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 30 Nov 2012 11:54:40 +0100 Subject: uas: new function to cancel data urbs Add uas_unlink_data_urbs function to cancel in-flight data urbs. Moves existing code into a separate function. [ v2: also drop the locking, just call usb_unlink_urb no matter what, which is safe because the usb core guarantees the completion callback is called only once ] Signed-off-by: Gerd Hoffmann Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/uas.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 98b98eef7527..8b58e5e8e86d 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -87,6 +87,15 @@ static DECLARE_WORK(uas_work, uas_do_work); static DEFINE_SPINLOCK(uas_work_lock); static LIST_HEAD(uas_work_list); +static void uas_unlink_data_urbs(struct uas_dev_info *devinfo, + struct uas_cmd_info *cmdinfo) +{ + if (cmdinfo->data_in_urb) + usb_unlink_urb(cmdinfo->data_in_urb); + if (cmdinfo->data_out_urb) + usb_unlink_urb(cmdinfo->data_out_urb); +} + static void uas_do_work(struct work_struct *work) { struct uas_cmd_info *cmdinfo; @@ -274,16 +283,9 @@ static void uas_stat_cmplt(struct urb *urb) uas_sense(urb, cmnd); if (cmnd->result != 0) { /* cancel data transfers on error */ - if (cmdinfo->state & DATA_IN_URB_INFLIGHT) { - spin_unlock_irqrestore(&devinfo->lock, flags); - usb_unlink_urb(cmdinfo->data_in_urb); - spin_lock_irqsave(&devinfo->lock, flags); - } - if (cmdinfo->state & DATA_OUT_URB_INFLIGHT) { - spin_unlock_irqrestore(&devinfo->lock, flags); - usb_unlink_urb(cmdinfo->data_out_urb); - spin_lock_irqsave(&devinfo->lock, flags); - } + spin_unlock_irqrestore(&devinfo->lock, flags); + uas_unlink_data_urbs(devinfo, cmdinfo); + spin_lock_irqsave(&devinfo->lock, flags); } cmdinfo->state &= ~COMMAND_INFLIGHT; uas_try_complete(cmnd, __func__); -- cgit v1.2.3 From b06e48afd17b29542b04c6a8b4a7f1a7c2e446c2 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 30 Nov 2012 11:54:41 +0100 Subject: uas: add UNLINK_DATA_URBS flag uas_unlink_data_urbs uses this to make sure the the scsi command is not released while looking at it. This will be needed when we start calling uas_unlink_data_urbs in the request cancel code paths. Signed-off-by: Gerd Hoffmann Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/uas.c | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 8b58e5e8e86d..a972e53656f5 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -66,6 +66,7 @@ enum { DATA_OUT_URB_INFLIGHT = (1 << 10), COMMAND_COMPLETED = (1 << 11), COMMAND_ABORTED = (1 << 12), + UNLINK_DATA_URBS = (1 << 13), }; /* Overrides scsi_pointer */ @@ -90,10 +91,25 @@ static LIST_HEAD(uas_work_list); static void uas_unlink_data_urbs(struct uas_dev_info *devinfo, struct uas_cmd_info *cmdinfo) { + unsigned long flags; + + /* + * The UNLINK_DATA_URBS flag makes sure uas_try_complete + * (called by urb completion) doesn't release cmdinfo + * underneath us. + */ + spin_lock_irqsave(&devinfo->lock, flags); + cmdinfo->state |= UNLINK_DATA_URBS; + spin_unlock_irqrestore(&devinfo->lock, flags); + if (cmdinfo->data_in_urb) usb_unlink_urb(cmdinfo->data_in_urb); if (cmdinfo->data_out_urb) usb_unlink_urb(cmdinfo->data_out_urb); + + spin_lock_irqsave(&devinfo->lock, flags); + cmdinfo->state &= ~UNLINK_DATA_URBS; + spin_unlock_irqrestore(&devinfo->lock, flags); } static void uas_do_work(struct work_struct *work) @@ -177,7 +193,7 @@ static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller) struct uas_cmd_info *ci = (void *)&cmnd->SCp; scmd_printk(KERN_INFO, cmnd, "%s %p tag %d, inflight:" - "%s%s%s%s%s%s%s%s%s%s%s%s\n", + "%s%s%s%s%s%s%s%s%s%s%s%s%s\n", caller, cmnd, cmnd->request->tag, (ci->state & SUBMIT_STATUS_URB) ? " s-st" : "", (ci->state & ALLOC_DATA_IN_URB) ? " a-in" : "", @@ -190,7 +206,8 @@ static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller) (ci->state & DATA_IN_URB_INFLIGHT) ? " IN" : "", (ci->state & DATA_OUT_URB_INFLIGHT) ? " OUT" : "", (ci->state & COMMAND_COMPLETED) ? " done" : "", - (ci->state & COMMAND_ABORTED) ? " abort" : ""); + (ci->state & COMMAND_ABORTED) ? " abort" : "", + (ci->state & UNLINK_DATA_URBS) ? " unlink": ""); } static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller) @@ -201,7 +218,8 @@ static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller) WARN_ON(!spin_is_locked(&devinfo->lock)); if (cmdinfo->state & (COMMAND_INFLIGHT | DATA_IN_URB_INFLIGHT | - DATA_OUT_URB_INFLIGHT)) + DATA_OUT_URB_INFLIGHT | + UNLINK_DATA_URBS)) return -EBUSY; BUG_ON(cmdinfo->state & COMMAND_COMPLETED); cmdinfo->state |= COMMAND_COMPLETED; -- cgit v1.2.3 From efefecf33adefcd28edfd3cee282aa9cbc3374ca Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 30 Nov 2012 11:54:42 +0100 Subject: uas: add IS_IN_WORK_LIST flag Keep track whenever the request is linked into the work list or not. Needed for request abort. Signed-off-by: Gerd Hoffmann Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/uas.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index a972e53656f5..05f1f2b8c33b 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -67,6 +67,7 @@ enum { COMMAND_COMPLETED = (1 << 11), COMMAND_ABORTED = (1 << 12), UNLINK_DATA_URBS = (1 << 13), + IS_IN_WORK_LIST = (1 << 14), }; /* Overrides scsi_pointer */ @@ -131,6 +132,8 @@ static void uas_do_work(struct work_struct *work) struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata; spin_lock_irqsave(&devinfo->lock, flags); err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC); + if (!err) + cmdinfo->state &= ~IS_IN_WORK_LIST; spin_unlock_irqrestore(&devinfo->lock, flags); if (err) { list_del(&cmdinfo->list); @@ -193,7 +196,7 @@ static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller) struct uas_cmd_info *ci = (void *)&cmnd->SCp; scmd_printk(KERN_INFO, cmnd, "%s %p tag %d, inflight:" - "%s%s%s%s%s%s%s%s%s%s%s%s%s\n", + "%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", caller, cmnd, cmnd->request->tag, (ci->state & SUBMIT_STATUS_URB) ? " s-st" : "", (ci->state & ALLOC_DATA_IN_URB) ? " a-in" : "", @@ -207,7 +210,8 @@ static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller) (ci->state & DATA_OUT_URB_INFLIGHT) ? " OUT" : "", (ci->state & COMMAND_COMPLETED) ? " done" : "", (ci->state & COMMAND_ABORTED) ? " abort" : "", - (ci->state & UNLINK_DATA_URBS) ? " unlink": ""); + (ci->state & UNLINK_DATA_URBS) ? " unlink": "", + (ci->state & IS_IN_WORK_LIST) ? " work" : ""); } static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller) @@ -244,6 +248,7 @@ static void uas_xfer_data(struct urb *urb, struct scsi_cmnd *cmnd, if (err) { spin_lock(&uas_work_lock); list_add_tail(&cmdinfo->list, &uas_work_list); + cmdinfo->state |= IS_IN_WORK_LIST; spin_unlock(&uas_work_lock); schedule_work(&uas_work); } @@ -643,6 +648,7 @@ static int uas_queuecommand_lck(struct scsi_cmnd *cmnd, } spin_lock(&uas_work_lock); list_add_tail(&cmdinfo->list, &uas_work_list); + cmdinfo->state |= IS_IN_WORK_LIST; spin_unlock(&uas_work_lock); schedule_work(&uas_work); } -- cgit v1.2.3 From 5d390403fee54a64c660b7d42f7b38d99a486b88 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 30 Nov 2012 11:54:43 +0100 Subject: uas: improve abort handler Two changes. First we check whenever the request is linked in the work list and if so take it out. Second check whenever the command is actually in flight before asking the device to cancel it via task management, and in case it isn't just zap the data urbs and finish it. Signed-off-by: Gerd Hoffmann Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/uas.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 05f1f2b8c33b..5416f2a8f566 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -715,8 +715,23 @@ static int uas_eh_abort_handler(struct scsi_cmnd *cmnd) uas_log_cmd_state(cmnd, __func__); spin_lock_irqsave(&devinfo->lock, flags); cmdinfo->state |= COMMAND_ABORTED; - spin_unlock_irqrestore(&devinfo->lock, flags); - ret = uas_eh_task_mgmt(cmnd, "ABORT TASK", TMF_ABORT_TASK); + if (cmdinfo->state & IS_IN_WORK_LIST) { + spin_lock(&uas_work_lock); + list_del(&cmdinfo->list); + cmdinfo->state &= ~IS_IN_WORK_LIST; + spin_unlock(&uas_work_lock); + } + if (cmdinfo->state & COMMAND_INFLIGHT) { + spin_unlock_irqrestore(&devinfo->lock, flags); + ret = uas_eh_task_mgmt(cmnd, "ABORT TASK", TMF_ABORT_TASK); + } else { + spin_unlock_irqrestore(&devinfo->lock, flags); + uas_unlink_data_urbs(devinfo, cmdinfo); + spin_lock_irqsave(&devinfo->lock, flags); + uas_try_complete(cmnd, __func__); + spin_unlock_irqrestore(&devinfo->lock, flags); + ret = SUCCESS; + } return ret; } -- cgit v1.2.3 From 4c456971f8c90b8179bf5fd5ae2d9b734085c19d Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 30 Nov 2012 11:54:44 +0100 Subject: uas: improve device reset Add new function to unlink and abort requests from the work list, call it on bus reset and disconnect where we kill all in-flight urbs. Also reorder calls in disconnect to first cancel transfers, then remove the scsi hba. Signed-off-by: Gerd Hoffmann Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/uas.c | 45 ++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 44 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 5416f2a8f566..547f96acad9c 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -84,6 +84,7 @@ struct uas_cmd_info { static int uas_submit_urbs(struct scsi_cmnd *cmnd, struct uas_dev_info *devinfo, gfp_t gfp); static void uas_do_work(struct work_struct *work); +static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller); static DECLARE_WORK(uas_work, uas_do_work); static DEFINE_SPINLOCK(uas_work_lock); @@ -145,6 +146,45 @@ static void uas_do_work(struct work_struct *work) } } +static void uas_abort_work(struct uas_dev_info *devinfo) +{ + struct uas_cmd_info *cmdinfo; + struct uas_cmd_info *temp; + struct list_head list; + unsigned long flags; + + spin_lock_irq(&uas_work_lock); + list_replace_init(&uas_work_list, &list); + spin_unlock_irq(&uas_work_lock); + + spin_lock_irqsave(&devinfo->lock, flags); + list_for_each_entry_safe(cmdinfo, temp, &list, list) { + struct scsi_pointer *scp = (void *)cmdinfo; + struct scsi_cmnd *cmnd = container_of(scp, + struct scsi_cmnd, SCp); + struct uas_dev_info *di = (void *)cmnd->device->hostdata; + + if (di == devinfo) { + cmdinfo->state |= COMMAND_ABORTED; + cmdinfo->state &= ~IS_IN_WORK_LIST; + if (devinfo->resetting) { + /* uas_stat_cmplt() will not do that + * when a device reset is in + * progress */ + cmdinfo->state &= ~COMMAND_INFLIGHT; + } + uas_try_complete(cmnd, __func__); + } else { + /* not our uas device, relink into list */ + list_del(&cmdinfo->list); + spin_lock_irq(&uas_work_lock); + list_add_tail(&cmdinfo->list, &uas_work_list); + spin_unlock_irq(&uas_work_lock); + } + } + spin_unlock_irqrestore(&devinfo->lock, flags); +} + static void uas_sense(struct urb *urb, struct scsi_cmnd *cmnd) { struct sense_iu *sense_iu = urb->transfer_buffer; @@ -750,6 +790,7 @@ static int uas_eh_bus_reset_handler(struct scsi_cmnd *cmnd) int err; devinfo->resetting = 1; + uas_abort_work(devinfo); usb_kill_anchored_urbs(&devinfo->cmd_urbs); usb_kill_anchored_urbs(&devinfo->sense_urbs); usb_kill_anchored_urbs(&devinfo->data_urbs); @@ -995,10 +1036,12 @@ static void uas_disconnect(struct usb_interface *intf) struct Scsi_Host *shost = usb_get_intfdata(intf); struct uas_dev_info *devinfo = (void *)shost->hostdata[0]; - scsi_remove_host(shost); + devinfo->resetting = 1; + uas_abort_work(devinfo); usb_kill_anchored_urbs(&devinfo->cmd_urbs); usb_kill_anchored_urbs(&devinfo->sense_urbs); usb_kill_anchored_urbs(&devinfo->data_urbs); + scsi_remove_host(shost); uas_free_streams(devinfo); kfree(devinfo); } -- cgit v1.2.3 From f8be6bfc5da027952e827a503e747fde5393adcc Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 30 Nov 2012 11:54:45 +0100 Subject: uas: fail any request submitted while resetting the device. Signed-off-by: Gerd Hoffmann Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/uas.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 547f96acad9c..ebb99728551c 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -644,6 +644,12 @@ static int uas_queuecommand_lck(struct scsi_cmnd *cmnd, BUILD_BUG_ON(sizeof(struct uas_cmd_info) > sizeof(struct scsi_pointer)); + if (devinfo->resetting) { + cmnd->result = DID_ERROR << 16; + cmnd->scsi_done(cmnd); + return 0; + } + spin_lock_irqsave(&devinfo->lock, flags); if (devinfo->cmnd) { spin_unlock_irqrestore(&devinfo->lock, flags); -- cgit v1.2.3 From a8ffa0be04d04b01e2a7fd116bc3763940753643 Mon Sep 17 00:00:00 2001 From: Stefan Hubner Date: Thu, 13 Dec 2012 22:45:00 +0100 Subject: usb: serial: keyspan: fixed coding style issues fixed coding style issues. Signed-off-by: Stefan Hubner Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/keyspan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index 97bc49f68efd..3d95637f3d68 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -298,7 +298,7 @@ static void usa26_indat_callback(struct urb *urb) endpoint = usb_pipeendpoint(urb->pipe); if (status) { - dev_dbg(&urb->dev->dev,"%s - nonzero status: %x on endpoint %d.\n", + dev_dbg(&urb->dev->dev, "%s - nonzero status: %x on endpoint %d.\n", __func__, status, endpoint); return; } @@ -532,7 +532,7 @@ static void usa28_instat_callback(struct urb *urb) /* dev_dbg(&urb->dev->dev, - "%s %x %x %x %x %x %x %x %x %x %x %x %x", __func__, + "%s %x %x %x %x %x %x %x %x %x %x %x %x", __func__, data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7], data[8], data[9], data[10], data[11]); */ -- cgit v1.2.3 From ece1d77ed73b335319725f1d5ffa72ca3fa9b05c Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Wed, 19 Dec 2012 09:18:57 +0800 Subject: USB: ohci: set urb->hcpriv = NULL immediately, after free it although we can not say it is surely a bug. it is better to set urb->hcpriv = NULL, after finish calling urb_free_priv. Signed-off-by: Chen Gang Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-q.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c index 7482cfbe8c5e..88731b7c5f42 100644 --- a/drivers/usb/host/ohci-q.c +++ b/drivers/usb/host/ohci-q.c @@ -44,6 +44,7 @@ __acquires(ohci->lock) // ASSERT (urb->hcpriv != 0); urb_free_priv (ohci, urb->hcpriv); + urb->hcpriv = NULL; if (likely(status == -EINPROGRESS)) status = 0; -- cgit v1.2.3 From 8d8479db3dde3ef7a9bc803e565842764fa21a53 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Tue, 18 Dec 2012 15:25:46 +0100 Subject: usb/core: consider link speed while looking at bMaxPower The USB 2.0 specification says that bMaxPower is the maximum power consumption expressed in 2 mA units and the USB 3.0 specification says that it is expressed in 8 mA units. This patch adds a helper function usb_get_max_power() which computes the value based on config & usb_device's speed value. The the device descriptor dump computes the value on its own. Cc: Sarah Sharp Cc: Greg Kroah-Hartman Acked-by: Alan Stern Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/devices.c | 13 ++++++++++--- drivers/usb/core/generic.c | 2 +- drivers/usb/core/hub.c | 2 +- drivers/usb/core/message.c | 2 +- drivers/usb/core/sysfs.c | 31 ++++++++++++++++++++++--------- drivers/usb/core/usb.h | 9 +++++++++ 6 files changed, 44 insertions(+), 15 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index cbacea933b18..e33224e23770 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -316,17 +316,23 @@ static char *usb_dump_iad_descriptor(char *start, char *end, */ static char *usb_dump_config_descriptor(char *start, char *end, const struct usb_config_descriptor *desc, - int active) + int active, int speed) { + int mul; + if (start > end) return start; + if (speed == USB_SPEED_SUPER) + mul = 8; + else + mul = 2; start += sprintf(start, format_config, /* mark active/actual/current cfg. */ active ? '*' : ' ', desc->bNumInterfaces, desc->bConfigurationValue, desc->bmAttributes, - desc->bMaxPower * 2); + desc->bMaxPower * mul); return start; } @@ -342,7 +348,8 @@ static char *usb_dump_config(int speed, char *start, char *end, if (!config) /* getting these some in 2.3.7; none in 2.3.6 */ return start + sprintf(start, "(null Cfg. desc.)\n"); - start = usb_dump_config_descriptor(start, end, &config->desc, active); + start = usb_dump_config_descriptor(start, end, &config->desc, active, + speed); for (i = 0; i < USB_MAXIADS; i++) { if (config->intf_assoc[i] == NULL) break; diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c index eff2010eb63f..271e761f563e 100644 --- a/drivers/usb/core/generic.c +++ b/drivers/usb/core/generic.c @@ -100,7 +100,7 @@ int usb_choose_configuration(struct usb_device *udev) */ /* Rule out configs that draw too much bus current */ - if (c->desc.bMaxPower * 2 > udev->bus_mA) { + if (usb_get_max_power(udev, c) > udev->bus_mA) { insufficient_power++; continue; } diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index ae10862fb041..12913306840a 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -4211,7 +4211,7 @@ hub_power_remaining (struct usb_hub *hub) /* Unconfigured devices may not use more than 100mA, * or 8mA for OTG ports */ if (udev->actconfig) - delta = udev->actconfig->desc.bMaxPower * 2; + delta = usb_get_max_power(udev, udev->actconfig); else if (port1 != udev->bus->otg_port || hdev->parent) delta = 100; else diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 131f73649b60..444d30e3a78b 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1751,7 +1751,7 @@ free_interfaces: } } - i = dev->bus_mA - cp->desc.bMaxPower * 2; + i = dev->bus_mA - usb_get_max_power(dev, cp); if (i < 0) dev_warn(&dev->dev, "new config #%d exceeds power " "limit by %dmA\n", diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 818e4a024d0d..3f81a3dc6867 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -17,7 +17,7 @@ #include "usb.h" /* Active configuration fields */ -#define usb_actconfig_show(field, multiplier, format_string) \ +#define usb_actconfig_show(field, format_string) \ static ssize_t show_##field(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ @@ -28,18 +28,31 @@ static ssize_t show_##field(struct device *dev, \ actconfig = udev->actconfig; \ if (actconfig) \ return sprintf(buf, format_string, \ - actconfig->desc.field * multiplier); \ + actconfig->desc.field); \ else \ return 0; \ } \ -#define usb_actconfig_attr(field, multiplier, format_string) \ -usb_actconfig_show(field, multiplier, format_string) \ -static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); +#define usb_actconfig_attr(field, format_string) \ + usb_actconfig_show(field, format_string) \ + static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL); + +usb_actconfig_attr(bNumInterfaces, "%2d\n") +usb_actconfig_attr(bmAttributes, "%2x\n") -usb_actconfig_attr(bNumInterfaces, 1, "%2d\n") -usb_actconfig_attr(bmAttributes, 1, "%2x\n") -usb_actconfig_attr(bMaxPower, 2, "%3dmA\n") +static ssize_t show_bMaxPower(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct usb_device *udev; + struct usb_host_config *actconfig; + + udev = to_usb_device(dev); + actconfig = udev->actconfig; + if (!actconfig) + return 0; + return sprintf(buf, "%dmA\n", usb_get_max_power(udev, actconfig)); +} +static DEVICE_ATTR(bMaxPower, S_IRUGO, show_bMaxPower, NULL); static ssize_t show_configuration_string(struct device *dev, struct device_attribute *attr, char *buf) @@ -56,7 +69,7 @@ static ssize_t show_configuration_string(struct device *dev, static DEVICE_ATTR(configuration, S_IRUGO, show_configuration_string, NULL); /* configuration value is always present, and r/w */ -usb_actconfig_show(bConfigurationValue, 1, "%u\n"); +usb_actconfig_show(bConfigurationValue, "%u\n"); static ssize_t set_bConfigurationValue(struct device *dev, struct device_attribute *attr, diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 1c528c1bf0be..fb7d8fcb4551 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -38,6 +38,15 @@ extern char *usb_cache_string(struct usb_device *udev, int index); extern int usb_set_configuration(struct usb_device *dev, int configuration); extern int usb_choose_configuration(struct usb_device *udev); +static inline unsigned usb_get_max_power(struct usb_device *udev, + struct usb_host_config *c) +{ + /* SuperSpeed power is in 8 mA units; others are in 2 mA units */ + unsigned mul = (udev->speed == USB_SPEED_SUPER ? 8 : 2); + + return c->desc.bMaxPower * mul; +} + extern void usb_kick_khubd(struct usb_device *dev); extern int usb_match_one_id_intf(struct usb_device *dev, struct usb_host_interface *intf, -- cgit v1.2.3 From 430ee58e03f1ed9c2a2b697e2f2e0bb870ce1a23 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Tue, 18 Dec 2012 15:25:47 +0100 Subject: usb/core: update power budget for SuperSpeed Sarah pointed out that the USB3.0 spec also updates the amount of power that may be consumed by the device and quoted 9.2.5.1: |"The amount of current draw for SuperSpeed devices are increased to 150 |mA for low-power devices and 900 mA for high-power" This patch tries to update all users to use the larger values for SuperSpeed devices and use the "old" ones for everything else. While here, two other changes suggested by Alan: - the comment referering to 7.2.1.1 has been updated to 7.2.1 which is the correct source of the action. - the check for hubs with zero ports has been removed. - compute bus power by full_load * num_ports on root hubs Acked-by: Alan Stern Acked-by: Sarah Sharp Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 1 - drivers/usb/core/hub.c | 57 ++++++++++++++++++++++++++++++++++++-------------- 2 files changed, 41 insertions(+), 17 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 4225d5e72131..5f6da8b2d6a1 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2506,7 +2506,6 @@ int usb_add_hcd(struct usb_hcd *hcd, } /* starting here, usbcore will pay attention to this root hub */ - rhdev->bus_mA = min(500u, hcd->power_budget); if ((retval = register_root_hub(hcd)) != 0) goto err_register_root_hub; diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 12913306840a..0ef512aa2898 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1351,6 +1351,8 @@ static int hub_configure(struct usb_hub *hub, unsigned int pipe; int maxp, ret, i; char *message = "out of memory"; + unsigned unit_load; + unsigned full_load; hub->buffer = kmalloc(sizeof(*hub->buffer), GFP_KERNEL); if (!hub->buffer) { @@ -1397,6 +1399,13 @@ static int hub_configure(struct usb_hub *hub, } wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics); + if (hub_is_superspeed(hdev)) { + unit_load = 150; + full_load = 900; + } else { + unit_load = 100; + full_load = 500; + } /* FIXME for USB 3.0, skip for now */ if ((wHubCharacteristics & HUB_CHAR_COMPOUND) && @@ -1516,40 +1525,44 @@ static int hub_configure(struct usb_hub *hub, goto fail; } le16_to_cpus(&hubstatus); + hcd = bus_to_hcd(hdev->bus); if (hdev == hdev->bus->root_hub) { - if (hdev->bus_mA == 0 || hdev->bus_mA >= 500) - hub->mA_per_port = 500; + if (hcd->power_budget > 0) + hdev->bus_mA = hcd->power_budget; + else + hdev->bus_mA = full_load * hdev->maxchild; + if (hdev->bus_mA >= full_load) + hub->mA_per_port = full_load; else { hub->mA_per_port = hdev->bus_mA; hub->limited_power = 1; } } else if ((hubstatus & (1 << USB_DEVICE_SELF_POWERED)) == 0) { + int remaining = hdev->bus_mA - + hub->descriptor->bHubContrCurrent; + dev_dbg(hub_dev, "hub controller current requirement: %dmA\n", hub->descriptor->bHubContrCurrent); hub->limited_power = 1; - if (hdev->maxchild > 0) { - int remaining = hdev->bus_mA - - hub->descriptor->bHubContrCurrent; - if (remaining < hdev->maxchild * 100) - dev_warn(hub_dev, + if (remaining < hdev->maxchild * unit_load) + dev_warn(hub_dev, "insufficient power available " "to use all downstream ports\n"); - hub->mA_per_port = 100; /* 7.2.1.1 */ - } + hub->mA_per_port = unit_load; /* 7.2.1 */ + } else { /* Self-powered external hub */ /* FIXME: What about battery-powered external hubs that * provide less current per port? */ - hub->mA_per_port = 500; + hub->mA_per_port = full_load; } - if (hub->mA_per_port < 500) + if (hub->mA_per_port < full_load) dev_dbg(hub_dev, "%umA bus power budget for each child\n", hub->mA_per_port); /* Update the HCD's internal representation of this hub before khubd * starts getting port status changes for devices under the hub. */ - hcd = bus_to_hcd(hdev->bus); if (hcd->driver->update_hub_device) { ret = hcd->driver->update_hub_device(hcd, hdev, &hub->tt, GFP_KERNEL); @@ -4204,16 +4217,23 @@ hub_power_remaining (struct usb_hub *hub) for (port1 = 1; port1 <= hdev->maxchild; ++port1) { struct usb_device *udev = hub->ports[port1 - 1]->child; int delta; + unsigned unit_load; if (!udev) continue; + if (hub_is_superspeed(udev)) + unit_load = 150; + else + unit_load = 100; - /* Unconfigured devices may not use more than 100mA, - * or 8mA for OTG ports */ + /* + * Unconfigured devices may not use more than one unit load, + * or 8mA for OTG ports + */ if (udev->actconfig) delta = usb_get_max_power(udev, udev->actconfig); else if (port1 != udev->bus->otg_port || hdev->parent) - delta = 100; + delta = unit_load; else delta = 8; if (delta > hub->mA_per_port) @@ -4248,6 +4268,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, le16_to_cpu(hub->descriptor->wHubCharacteristics); struct usb_device *udev; int status, i; + unsigned unit_load; dev_dbg (hub_dev, "port %d, status %04x, change %04x, %s\n", @@ -4337,6 +4358,10 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, goto done; return; } + if (hub_is_superspeed(hub->hdev)) + unit_load = 150; + else + unit_load = 100; for (i = 0; i < SET_CONFIG_TRIES; i++) { @@ -4384,7 +4409,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, * on the parent. */ if (udev->descriptor.bDeviceClass == USB_CLASS_HUB - && udev->bus_mA <= 100) { + && udev->bus_mA <= unit_load) { u16 devstat; status = usb_get_status(udev, USB_RECIP_DEVICE, 0, -- cgit v1.2.3 From c0304996ba4013df58f807bf2b3ad59df84d7953 Mon Sep 17 00:00:00 2001 From: Matt Sealey Date: Sun, 23 Dec 2012 05:18:21 -0600 Subject: USB: ehci-mxc: remove Efika MX-specific CHRGVBUS hack Since Efika MX platform support (pre-devicetree) was removed from the tree this code no longer has any possibility of running and clutters up the driver which is being replaced by the chipidea host in the future anyway. Signed-off-by: Matt Sealey Tested-by: Steev Klimazewski CC: Sascha Hauer CC: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-mxc.c | 20 -------------------- 1 file changed, 20 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c index ec7f5d2c90de..6b8c1584065f 100644 --- a/drivers/usb/host/ehci-mxc.c +++ b/drivers/usb/host/ehci-mxc.c @@ -94,7 +94,6 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev) struct usb_hcd *hcd; struct resource *res; int irq, ret; - unsigned int flags; struct ehci_mxc_priv *priv; struct device *dev = &pdev->dev; struct ehci_hcd *ehci; @@ -205,25 +204,6 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev) if (ret) goto err_add; - if (pdata->otg) { - /* - * efikamx and efikasb have some hardware bug which is - * preventing usb to work unless CHRGVBUS is set. - * It's in violation of USB specs - */ - if (machine_is_mx51_efikamx() || machine_is_mx51_efikasb()) { - flags = usb_phy_io_read(pdata->otg, - ULPI_OTG_CTRL); - flags |= ULPI_OTG_CTRL_CHRGVBUS; - ret = usb_phy_io_write(pdata->otg, flags, - ULPI_OTG_CTRL); - if (ret) { - dev_err(dev, "unable to set CHRVBUS\n"); - goto err_add; - } - } - } - return 0; err_add: -- cgit v1.2.3 From 99d17cfa3bbc6f4edb175f819af59c6b9e245e82 Mon Sep 17 00:00:00 2001 From: Fabio Baltieri Date: Mon, 7 Jan 2013 17:47:41 +0100 Subject: usb: musb: ux500: use clk_prepare_enable and clk_disable_unprepare This patch converts the module to use clk_prepare_enable and clk_disable_unprepare variants as required by common clock framework. Without this the system crash during probe function. Cc: # v3.7 v3.8 Signed-off-by: Fabio Baltieri Acked-by: Linus Walleij Signed-off-by: Felipe Balbi --- drivers/usb/musb/ux500.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/ux500.c b/drivers/usb/musb/ux500.c index a27ca1a9c994..0804661b6d21 100644 --- a/drivers/usb/musb/ux500.c +++ b/drivers/usb/musb/ux500.c @@ -108,7 +108,7 @@ static int ux500_probe(struct platform_device *pdev) goto err3; } - ret = clk_enable(clk); + ret = clk_prepare_enable(clk); if (ret) { dev_err(&pdev->dev, "failed to enable clock\n"); goto err4; @@ -148,7 +148,7 @@ static int ux500_probe(struct platform_device *pdev) return 0; err5: - clk_disable(clk); + clk_disable_unprepare(clk); err4: clk_put(clk); @@ -168,7 +168,7 @@ static int ux500_remove(struct platform_device *pdev) struct ux500_glue *glue = platform_get_drvdata(pdev); platform_device_unregister(glue->musb); - clk_disable(glue->clk); + clk_disable_unprepare(glue->clk); clk_put(glue->clk); kfree(glue); @@ -182,7 +182,7 @@ static int ux500_suspend(struct device *dev) struct musb *musb = glue_to_musb(glue); usb_phy_set_suspend(musb->xceiv, 1); - clk_disable(glue->clk); + clk_disable_unprepare(glue->clk); return 0; } @@ -193,7 +193,7 @@ static int ux500_resume(struct device *dev) struct musb *musb = glue_to_musb(glue); int ret; - ret = clk_enable(glue->clk); + ret = clk_prepare_enable(glue->clk); if (ret) { dev_err(dev, "failed to enable clock\n"); return ret; -- cgit v1.2.3 From 8df4ce75189807783c4bb4e4337e0f89283e6ca3 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Tue, 8 Jan 2013 22:13:40 +0300 Subject: usb: musb: omap2430: kill redundant assignments in omap2430_probe() Commit 00a0b1d58af873d842580dcac55f3b156c3a4077 (usb: musb: omap: Add device tree support for omap musb glue) added assignments of the 'ret' variable to -ENOMEM on *some* error paths of the calls to devm_kzalloc(), while that variable was already pre-initialized for to that value, so these assignments were completely redundant. Kill them, fixing overindented string, while at it. Signed-off-by: Sergei Shtylyov Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index c293dbeb8b24..cd06166affee 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -532,15 +532,13 @@ static int omap2430_probe(struct platform_device *pdev) if (!pdata) { dev_err(&pdev->dev, "failed to allocate musb platfrom data\n"); - ret = -ENOMEM; goto err2; } data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) { dev_err(&pdev->dev, - "failed to allocate musb board data\n"); - ret = -ENOMEM; + "failed to allocate musb board data\n"); goto err2; } -- cgit v1.2.3 From a70b84421be5eebde59b0c9e15d20f316e1fbea9 Mon Sep 17 00:00:00 2001 From: supriya karanth Date: Fri, 4 Jan 2013 17:10:33 +0530 Subject: usb: musb: Double buffering issues in host mode TX Whenever an URB is programmed for transfer, the TXFIFO is flushed. This results in valid packets of the previous transfer to get flushed when double buffering is enabled (The MUSB_TXCSR_FIFONOTEMPTY bit in TXCSR is set indicating that a packet in the FIFO is yet to be sent) For ex:- In Host mode Audio, noise is heard in the headset when double buffering is enabled on the ISO endpoint. The fifo flush is removed for double buffering case. The fifo is now flushed only in cases of error or when aborting a transfer. Also, In Host MSC case, data toggle errors are seen when double buffering is enabled on the bulk endpoint. Whenever an URB is programmed for transfer, the data toggle is set manually resulting in data toggle errors on the bus. Leave the data toggle handling upto the hardware in the double buffering case. Signed-off-by: supriya karanth Signed-off-by: Praveena NADAHALLY Acked-by: Linus Walleij Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_host.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index cf3705fd78c8..1ce1fcf3f3e7 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -756,7 +756,13 @@ static void musb_ep_program(struct musb *musb, u8 epnum, /* general endpoint setup */ if (epnum) { /* flush all old state, set default */ - musb_h_tx_flush_fifo(hw_ep); + /* + * We could be flushing valid + * packets in double buffering + * case + */ + if (!hw_ep->tx_double_buffered) + musb_h_tx_flush_fifo(hw_ep); /* * We must not clear the DMAMODE bit before or in @@ -773,11 +779,13 @@ static void musb_ep_program(struct musb *musb, u8 epnum, ); csr |= MUSB_TXCSR_MODE; - if (usb_gettoggle(urb->dev, qh->epnum, 1)) - csr |= MUSB_TXCSR_H_WR_DATATOGGLE - | MUSB_TXCSR_H_DATATOGGLE; - else - csr |= MUSB_TXCSR_CLRDATATOG; + if (!hw_ep->tx_double_buffered) { + if (usb_gettoggle(urb->dev, qh->epnum, 1)) + csr |= MUSB_TXCSR_H_WR_DATATOGGLE + | MUSB_TXCSR_H_DATATOGGLE; + else + csr |= MUSB_TXCSR_CLRDATATOG; + } musb_writew(epio, MUSB_TXCSR, csr); /* REVISIT may need to clear FLUSHFIFO ... */ -- cgit v1.2.3 From 681d1e8761ca773967bce9bd1bb2896f07279551 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 4 Jan 2013 23:13:06 +0800 Subject: usb: musb: core: fix failure path In the fail1~fail5 failure path, pm_runtime_disable() should be called to avoid 'Unbalanced pm_runtime_enable' error in next probe() which may be triggered by defer probe or next 'modprobe musb_hdrc'. Cc: Sebastian Andrzej Siewior Cc: v3.8 Signed-off-by: Ming Lei Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_core.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index f1c6c5470b92..8219eb5abec0 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1993,6 +1993,7 @@ fail2: musb_platform_exit(musb); fail1: + pm_runtime_disable(musb->controller); dev_err(musb->controller, "musb_init_controller failed with status %d\n", status); -- cgit v1.2.3 From 25736e0c8269e9613aa6036fbc591818daa30d14 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 4 Jan 2013 23:13:58 +0800 Subject: usb: musb: fix dependency on transceiver driver This patch let glue driver return -EPROBE_DEFER if the transceiver is not readly, so we can support defer probe on musb to fix the below error on 3.7-rc5 if transceiver drivers are built as module: [ 19.052490] unable to find transceiver of type USB2 PHY [ 19.072052] HS USB OTG: no transceiver configured [ 19.076995] musb-hdrc musb-hdrc.0.auto: musb_init_controller failed with status -19 [ 19.089355] musb-hdrc: probe of musb-hdrc.0.auto rejects match -19 [ 19.096771] driver: 'musb-omap2430': driver_bound: bound to device 'musb-omap2430' [ 19.105194] bus: 'platform': really_probe: bound device musb-omap2430 to driver musb-omap2430 [ 19.174407] bus: 'platform': add driver twl4030_usb [ 19.179656] bus: 'platform': driver_probe_device: matched device twl4030_usb with driver twl4030_usb [ 19.202270] bus: 'platform': really_probe: probing driver twl4030_usb with device twl4030_usb [ 19.214172] twl4030_usb twl4030_usb: HW_CONDITIONS 0xc0/192; link 3 [ 19.239624] musb-omap2430 musb-omap2430: musb core is not yet ready [ 19.246765] twl4030_usb twl4030_usb: Initialized TWL4030 USB module [ 19.254516] driver: 'twl4030_usb': driver_bound: bound to device 'twl4030_usb' [ 19.263580] bus: 'platform': really_probe: bound device twl4030_usb to driver twl4030_usb Cc: Sebastian Andrzej Siewior Cc: v3.8 Signed-off-by: Ming Lei Signed-off-by: Felipe Balbi --- drivers/usb/musb/am35x.c | 2 +- drivers/usb/musb/blackfin.c | 2 +- drivers/usb/musb/da8xx.c | 7 +++++-- drivers/usb/musb/davinci.c | 7 +++++-- drivers/usb/musb/musb_dsps.c | 2 +- drivers/usb/musb/omap2430.c | 2 +- drivers/usb/musb/tusb6010.c | 2 +- drivers/usb/musb/ux500.c | 2 +- 8 files changed, 16 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c index c107d7cdfa69..59eea219034a 100644 --- a/drivers/usb/musb/am35x.c +++ b/drivers/usb/musb/am35x.c @@ -365,7 +365,7 @@ static int am35x_musb_init(struct musb *musb) usb_nop_xceiv_register(); musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(musb->xceiv)) - return -ENODEV; + return -EPROBE_DEFER; setup_timer(&otg_workaround, otg_timer, (unsigned long) musb); diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c index 14dab9f9b3d0..dbb31b30c7fa 100644 --- a/drivers/usb/musb/blackfin.c +++ b/drivers/usb/musb/blackfin.c @@ -406,7 +406,7 @@ static int bfin_musb_init(struct musb *musb) musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(musb->xceiv)) { gpio_free(musb->config->gpio_vrsel); - return -ENODEV; + return -EPROBE_DEFER; } bfin_musb_reg_init(musb); diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index 97996af2646e..7c71769d71ff 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -410,6 +410,7 @@ static int da8xx_musb_init(struct musb *musb) { void __iomem *reg_base = musb->ctrl_base; u32 rev; + int ret = -ENODEV; musb->mregs += DA8XX_MENTOR_CORE_OFFSET; @@ -420,8 +421,10 @@ static int da8xx_musb_init(struct musb *musb) usb_nop_xceiv_register(); musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); - if (IS_ERR_OR_NULL(musb->xceiv)) + if (IS_ERR_OR_NULL(musb->xceiv)) { + ret = -EPROBE_DEFER; goto fail; + } setup_timer(&otg_workaround, otg_timer, (unsigned long)musb); @@ -441,7 +444,7 @@ static int da8xx_musb_init(struct musb *musb) musb->isr = da8xx_musb_interrupt; return 0; fail: - return -ENODEV; + return ret; } static int da8xx_musb_exit(struct musb *musb) diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c index b1c01cad28b2..e040d9103735 100644 --- a/drivers/usb/musb/davinci.c +++ b/drivers/usb/musb/davinci.c @@ -380,11 +380,14 @@ static int davinci_musb_init(struct musb *musb) { void __iomem *tibase = musb->ctrl_base; u32 revision; + int ret = -ENODEV; usb_nop_xceiv_register(); musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); - if (IS_ERR_OR_NULL(musb->xceiv)) + if (IS_ERR_OR_NULL(musb->xceiv)) { + ret = -EPROBE_DEFER; goto unregister; + } musb->mregs += DAVINCI_BASE_OFFSET; @@ -438,7 +441,7 @@ fail: usb_put_phy(musb->xceiv); unregister: usb_nop_xceiv_unregister(); - return -ENODEV; + return ret; } static int davinci_musb_exit(struct musb *musb) diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index dd1392b75f57..971ca9b539f7 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -413,7 +413,7 @@ static int dsps_musb_init(struct musb *musb) usb_nop_xceiv_register(); musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(musb->xceiv)) - return -ENODEV; + return -EPROBE_DEFER; /* Returns zero if e.g. not clocked */ rev = dsps_readl(reg_base, wrp->revision); diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index cd06166affee..b15bb05dc5e8 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -369,7 +369,7 @@ static int omap2430_musb_init(struct musb *musb) musb->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(musb->xceiv)) { pr_err("HS USB OTG: no transceiver configured\n"); - return -ENODEV; + return -EPROBE_DEFER; } musb->isr = omap2430_musb_interrupt; diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index 3969813c217d..464bd23cccda 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -1069,7 +1069,7 @@ static int tusb_musb_init(struct musb *musb) usb_nop_xceiv_register(); musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(musb->xceiv)) - return -ENODEV; + return -EPROBE_DEFER; pdev = to_platform_device(musb->controller); diff --git a/drivers/usb/musb/ux500.c b/drivers/usb/musb/ux500.c index 0804661b6d21..13a392913769 100644 --- a/drivers/usb/musb/ux500.c +++ b/drivers/usb/musb/ux500.c @@ -61,7 +61,7 @@ static int ux500_musb_init(struct musb *musb) musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(musb->xceiv)) { pr_err("HS USB OTG: no transceiver configured\n"); - return -ENODEV; + return -EPROBE_DEFER; } musb->isr = ux500_musb_interrupt; -- cgit v1.2.3 From b37457d80bc3e2a6bb86a6036c572574614a7631 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Tue, 8 Jan 2013 22:11:14 +0300 Subject: usb: musb: omap2430: fix wrong devm_kzalloc() result check Commit 00a0b1d58af873d842580dcac55f3b156c3a4077 (usb: musb: omap: Add device tree support for omap musb glue) assigns result of devm_kzalloc() call to the 'config' variable but then checks for NULL the 'data' variable (already checked after previous call). Thus we risk a kernel oops further when data pointed by 'config' is written to by subsequent of_property_read_u32() calls iff the allocation happens to fail... Signed-off-by: Sergei Shtylyov Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index b15bb05dc5e8..bb48796e5213 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -543,7 +543,7 @@ static int omap2430_probe(struct platform_device *pdev) } config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); - if (!data) { + if (!config) { dev_err(&pdev->dev, "failed to allocate musb hdrc config\n"); goto err2; -- cgit v1.2.3 From 74ff31b81d94c139882258e9e4a73aca28d05b0a Mon Sep 17 00:00:00 2001 From: Fengguang Wu Date: Sat, 12 Jan 2013 13:15:09 +0800 Subject: usb: misc: usb3503_probe() can be static Signed-off-by: Fengguang Wu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usb3503.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index 796d58c95b63..c3770734da42 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -178,7 +178,7 @@ err_hubmode: return err; } -int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) +static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct usb3503_platform_data *pdata = i2c->dev.platform_data; struct usb3503 *hub; -- cgit v1.2.3 From 7a8ea7ebe4cf698918e7d3c860587e815eaa0f28 Mon Sep 17 00:00:00 2001 From: Dongjin Kim Date: Sat, 12 Jan 2013 20:54:33 +0900 Subject: USB: misc: fixup smatch WARNING This patch fixes the warning, 6a099c63650e50ebf7d1259b859a3d230aec4207 [4/10] USB: misc: Add USB3503 High-Speed Hub Controller drivers/usb/misc/usb3503.c:238 usb3503_probe() error: we previously assumed 'pdata' could be null (see line 196) Signed-off-by: Dongjin Kim Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usb3503.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index c3770734da42..dc2c993ea189 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -182,12 +182,12 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct usb3503_platform_data *pdata = i2c->dev.platform_data; struct usb3503 *hub; - int err; + int err = -ENOMEM; hub = kzalloc(sizeof(struct usb3503), GFP_KERNEL); if (!hub) { dev_err(&i2c->dev, "private data alloc fail\n"); - return -ENOMEM; + return err; } i2c_set_clientdata(i2c, hub); @@ -195,6 +195,7 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) if (!pdata) { dev_dbg(&i2c->dev, "missing platform data\n"); + goto err_out; } else { hub->gpio_intn = pdata->gpio_intn; hub->gpio_connect = pdata->gpio_connect; @@ -209,7 +210,7 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) dev_err(&i2c->dev, "unable to request GPIO %d as connect pin (%d)\n", hub->gpio_intn, err); - goto err_gpio_intn; + goto err_out; } } @@ -248,7 +249,7 @@ err_gpio_reset: err_gpio_connect: if (gpio_is_valid(hub->gpio_intn)) gpio_free(hub->gpio_intn); -err_gpio_intn: +err_out: kfree(hub); return err; -- cgit v1.2.3 From 5da93478251cf0dd6b34874c7c1c24a4a52eabc1 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 7 Dec 2012 21:42:03 +0200 Subject: usb: dwc3: decrease event buffer size Currently we're allocating an entire page to serve as our event buffer. Provided our events are 4 bytes long, it's very unlikely we will even trigger 1k events at once. Even in the worst case scenario where every endpoint triggers one event and we still have a couple of error events, that would still be less than 40 events. In order to cope with future versions of the IP which could (or could not) increase the amount of possible events to trigger simultaneously, we're using an arbitrary size of 64 events for our event buffer. We're saving 3840 bytes by doing so. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 499956344262..5f79d9f51000 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -55,7 +55,9 @@ #define DWC3_ENDPOINTS_NUM 32 #define DWC3_XHCI_RESOURCES_NUM 2 -#define DWC3_EVENT_BUFFERS_SIZE PAGE_SIZE +#define DWC3_EVENT_SIZE 4 /* bytes */ +#define DWC3_EVENT_MAX_NUM 64 /* 2 events/endpoint */ +#define DWC3_EVENT_BUFFERS_SIZE (DWC3_EVENT_SIZE * DWC3_EVENT_MAX_NUM) #define DWC3_EVENT_TYPE_MASK 0xfe #define DWC3_EVENT_TYPE_DEV 0 -- cgit v1.2.3 From 20b97dc18323938a92319abf031936b7d2686eaf Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Tue, 13 Nov 2012 11:20:49 +0900 Subject: usb: dwc3: exynos: use devm_ functions The devm_ functions allocate memory that is released when a driver detaches. This makes the code smaller and a bit simpler. Signed-off-by: Jingoo Han Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-exynos.c | 51 +++++++++++++++++++----------------------- 1 file changed, 23 insertions(+), 28 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index aae5328ac771..90e05e60c3fe 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -95,13 +95,14 @@ static int dwc3_exynos_probe(struct platform_device *pdev) struct platform_device *dwc3; struct dwc3_exynos *exynos; struct clk *clk; + struct device *dev = &pdev->dev; int ret = -ENOMEM; - exynos = kzalloc(sizeof(*exynos), GFP_KERNEL); + exynos = devm_kzalloc(dev, sizeof(*exynos), GFP_KERNEL); if (!exynos) { - dev_err(&pdev->dev, "not enough memory\n"); - goto err0; + dev_err(dev, "not enough memory\n"); + return -ENOMEM; } /* @@ -116,30 +117,30 @@ static int dwc3_exynos_probe(struct platform_device *pdev) ret = dwc3_exynos_register_phys(exynos); if (ret) { - dev_err(&pdev->dev, "couldn't register PHYs\n"); - goto err1; + dev_err(dev, "couldn't register PHYs\n"); + return ret; } dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); if (!dwc3) { - dev_err(&pdev->dev, "couldn't allocate dwc3 device\n"); - goto err1; + dev_err(dev, "couldn't allocate dwc3 device\n"); + return -ENOMEM; } - clk = clk_get(&pdev->dev, "usbdrd30"); + clk = devm_clk_get(dev, "usbdrd30"); if (IS_ERR(clk)) { - dev_err(&pdev->dev, "couldn't get clock\n"); + dev_err(dev, "couldn't get clock\n"); ret = -EINVAL; - goto err3; + goto err1; } - dma_set_coherent_mask(&dwc3->dev, pdev->dev.coherent_dma_mask); + dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask); - dwc3->dev.parent = &pdev->dev; - dwc3->dev.dma_mask = pdev->dev.dma_mask; - dwc3->dev.dma_parms = pdev->dev.dma_parms; + dwc3->dev.parent = dev; + dwc3->dev.dma_mask = dev->dma_mask; + dwc3->dev.dma_parms = dev->dma_parms; exynos->dwc3 = dwc3; - exynos->dev = &pdev->dev; + exynos->dev = dev; exynos->clk = clk; clk_enable(exynos->clk); @@ -147,26 +148,23 @@ static int dwc3_exynos_probe(struct platform_device *pdev) ret = platform_device_add_resources(dwc3, pdev->resource, pdev->num_resources); if (ret) { - dev_err(&pdev->dev, "couldn't add resources to dwc3 device\n"); - goto err4; + dev_err(dev, "couldn't add resources to dwc3 device\n"); + goto err2; } ret = platform_device_add(dwc3); if (ret) { - dev_err(&pdev->dev, "failed to register dwc3 device\n"); - goto err4; + dev_err(dev, "failed to register dwc3 device\n"); + goto err2; } return 0; -err4: +err2: clk_disable(clk); - clk_put(clk); -err3: - platform_device_put(dwc3); err1: - kfree(exynos); -err0: + platform_device_put(dwc3); + return ret; } @@ -179,9 +177,6 @@ static int dwc3_exynos_remove(struct platform_device *pdev) platform_device_unregister(exynos->usb3_phy); clk_disable(exynos->clk); - clk_put(exynos->clk); - - kfree(exynos); return 0; } -- cgit v1.2.3 From 7dbdf4e4b37766a2389680c460b9dab278a5444c Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 13 Dec 2012 16:12:00 +0200 Subject: usb: dwc3: gadget: don't redefine 'ret' we have an extra 'ret' variable shadowing a previous definition. Remove it. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 2e43b332aae8..0b92e982ac54 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1082,8 +1082,6 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) * */ if (dep->flags & DWC3_EP_PENDING_REQUEST) { - int ret; - /* * If xfernotready is already elapsed and it is a case * of isoc transfer, then issue END TRANSFER, so that -- cgit v1.2.3 From d7668024b3b5f9563eab8dad66cb9a4b80f36ebf Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 18 Jan 2013 10:21:34 +0200 Subject: usb: dwc3: debugfs: convert our regdump to use regsets regset is a generic implementation of regdump utility through debugfs. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 1 + drivers/usb/dwc3/debugfs.c | 36 ++++++++++++------------------------ 2 files changed, 13 insertions(+), 24 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 5f79d9f51000..b7ca82cf22a0 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -723,6 +723,7 @@ struct dwc3 { struct dwc3_hwparams hwparams; struct dentry *root; + struct debugfs_regset32 *regset; u8 test_mode; u8 test_mode_nr; diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index 5945aadaa1c9..aff8fd3e7e90 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -59,7 +59,7 @@ .offset = DWC3_ ##nm - DWC3_GLOBALS_REGS_START, \ } -static const struct debugfs_reg32 dwc3_regs[] = { +static struct debugfs_reg32 dwc3_regs[] = { dump_register(GSBUSCFG0), dump_register(GSBUSCFG1), dump_register(GTXTHRCFG), @@ -376,27 +376,6 @@ static const struct debugfs_reg32 dwc3_regs[] = { dump_register(OSTS), }; -static int dwc3_regdump_show(struct seq_file *s, void *unused) -{ - struct dwc3 *dwc = s->private; - - seq_printf(s, "DesignWare USB3 Core Register Dump\n"); - debugfs_print_regs32(s, dwc3_regs, ARRAY_SIZE(dwc3_regs), - dwc->regs, ""); - return 0; -} - -static int dwc3_regdump_open(struct inode *inode, struct file *file) -{ - return single_open(file, dwc3_regdump_show, inode->i_private); -} - -static const struct file_operations dwc3_regdump_fops = { - .open = dwc3_regdump_open, - .read = seq_read, - .release = single_release, -}; - static int dwc3_mode_show(struct seq_file *s, void *unused) { struct dwc3 *dwc = s->private; @@ -666,8 +645,17 @@ int dwc3_debugfs_init(struct dwc3 *dwc) dwc->root = root; - file = debugfs_create_file("regdump", S_IRUGO, root, dwc, - &dwc3_regdump_fops); + dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL); + if (!dwc->regset) { + ret = -ENOMEM; + goto err1; + } + + dwc->regset->regs = dwc3_regs; + dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); + dwc->regset->base = dwc->regs; + + file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset); if (!file) { ret = -ENOMEM; goto err1; -- cgit v1.2.3 From 2b758350af19db9a5c98241cf222c2e211d7a912 Mon Sep 17 00:00:00 2001 From: Pratyush Anand Date: Mon, 14 Jan 2013 15:59:31 +0530 Subject: usb: dwc3: Enable usb2 LPM only when connected as usb2.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Synopsys says: The HIRD Threshold field must be set to ‘0’ when the device core is operating in super speed mode. This patch implements above statement. Cc: # v3.6 v3.7 v3.8 Acked-by: Paul Zimmerman Signed-off-by: Pratyush Anand Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 31 ++++++++++++++++++------------- 1 file changed, 18 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 0b92e982ac54..113ec80dcc26 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2154,6 +2154,23 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) break; } + /* Enable USB2 LPM Capability */ + + if ((dwc->revision > DWC3_REVISION_194A) + && (speed != DWC3_DCFG_SUPERSPEED)) { + reg = dwc3_readl(dwc->regs, DWC3_DCFG); + reg |= DWC3_DCFG_LPM_CAP; + dwc3_writel(dwc->regs, DWC3_DCFG, reg); + + reg = dwc3_readl(dwc->regs, DWC3_DCTL); + reg &= ~(DWC3_DCTL_HIRD_THRES_MASK | DWC3_DCTL_L1_HIBER_EN); + + /* TODO: This should be configurable */ + reg |= DWC3_DCTL_HIRD_THRES(28); + + dwc3_writel(dwc->regs, DWC3_DCTL, reg); + } + /* Recent versions support automatic phy suspend and don't need this */ if (dwc->revision < DWC3_REVISION_194A) { /* Suspend unneeded PHY */ @@ -2460,20 +2477,8 @@ int dwc3_gadget_init(struct dwc3 *dwc) DWC3_DEVTEN_DISCONNEVTEN); dwc3_writel(dwc->regs, DWC3_DEVTEN, reg); - /* Enable USB2 LPM and automatic phy suspend only on recent versions */ + /* automatic phy suspend only on recent versions */ if (dwc->revision >= DWC3_REVISION_194A) { - reg = dwc3_readl(dwc->regs, DWC3_DCFG); - reg |= DWC3_DCFG_LPM_CAP; - dwc3_writel(dwc->regs, DWC3_DCFG, reg); - - reg = dwc3_readl(dwc->regs, DWC3_DCTL); - reg &= ~(DWC3_DCTL_HIRD_THRES_MASK | DWC3_DCTL_L1_HIBER_EN); - - /* TODO: This should be configurable */ - reg |= DWC3_DCTL_HIRD_THRES(28); - - dwc3_writel(dwc->regs, DWC3_DCTL, reg); - dwc3_gadget_usb2_phy_suspend(dwc, false); dwc3_gadget_usb3_phy_suspend(dwc, false); } -- cgit v1.2.3 From 7efea86c2868b8fd9df65e589e33aebe498ce21d Mon Sep 17 00:00:00 2001 From: Pratyush Anand Date: Mon, 14 Jan 2013 15:59:32 +0530 Subject: usb: dwc3: gadget: fix missed isoc There are two reasons to generate missed isoc. 1. when the host does not poll for all the data. 2. because of application-side delays that prevent all the data from being transferred in programmed microframe. Current code was able to handle first case only. This patch handles scenario 2 as well.Scenario 2 sometime may occur with complex gadget application, however it can be easily reproduced for testing purpose as follows: a. use isoc binterval as 1 in f_sourcesink. b. use pattern=0 c. introduce a delay of 150us deliberately in source_sink_complete, so that after few frames it lands into scenario 2. d. now run testusb 16 (isoc in test). You will notice that if this patch is not applied then isoc transfer is not able to recover after first missed. Current patch's approach is as under: If missed isoc occurs and there is no request queued then issue END TRANSFER, so that core generates next xfernotready and we will issue a fresh START TRANSFER. If there are still queued request then wait, do not issue either END or UPDATE TRANSFER, just attach next request in request_list during giveback. If any future queued request is successfully transferred then we will issue UPDATE TRANSFER for all request in the request_list. Cc: # v3.6 v3.7 v3.8 Signed-off-by: Pratyush Anand Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 2 -- drivers/usb/dwc3/gadget.c | 36 ++++++++++++++++++++++++------------ 2 files changed, 24 insertions(+), 14 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index b7ca82cf22a0..7610cf5648c1 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -407,7 +407,6 @@ struct dwc3_event_buffer { * @number: endpoint number (1 - 15) * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK * @resource_index: Resource transfer index - * @current_uf: Current uf received through last event parameter * @interval: the intervall on which the ISOC transfer is started * @name: a human readable name e.g. ep1out-bulk * @direction: true for TX, false for RX @@ -441,7 +440,6 @@ struct dwc3_ep { u8 number; u8 type; u8 resource_index; - u16 current_uf; u32 interval; char name[20]; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 113ec80dcc26..356a5a2af750 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1115,16 +1115,6 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) dep->name); } - /* - * 3. Missed ISOC Handling. We need to start isoc transfer on the saved - * uframe number. - */ - if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && - (dep->flags & DWC3_EP_MISSED_ISOC)) { - __dwc3_gadget_start_isoc(dwc, dep, dep->current_uf); - dep->flags &= ~DWC3_EP_MISSED_ISOC; - } - return 0; } @@ -1686,14 +1676,29 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, if (trb_status == DWC3_TRBSTS_MISSED_ISOC) { dev_dbg(dwc->dev, "incomplete IN transfer %s\n", dep->name); - dep->current_uf = event->parameters & - ~(dep->interval - 1); + /* + * If missed isoc occurred and there is + * no request queued then issue END + * TRANSFER, so that core generates + * next xfernotready and we will issue + * a fresh START TRANSFER. + * If there are still queued request + * then wait, do not issue either END + * or UPDATE TRANSFER, just attach next + * request in request_list during + * giveback.If any future queued request + * is successfully transferred then we + * will issue UPDATE TRANSFER for all + * request in the request_list. + */ dep->flags |= DWC3_EP_MISSED_ISOC; } else { dev_err(dwc->dev, "incomplete IN transfer %s\n", dep->name); status = -ECONNRESET; } + } else { + dep->flags &= ~DWC3_EP_MISSED_ISOC; } } else { if (count && (event->status & DEPEVT_STATUS_SHORT)) @@ -1720,6 +1725,13 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, break; } while (1); + if (list_empty(&dep->req_queued) && + (dep->flags & DWC3_EP_MISSED_ISOC)) { + dwc3_stop_active_transfer(dwc, dep->number); + dep->flags &= ~DWC3_EP_MISSED_ISOC; + return 1; + } + if ((event->status & DEPEVT_STATUS_IOC) && (trb->ctrl & DWC3_TRB_CTRL_IOC)) return 0; -- cgit v1.2.3 From 15f86bde29f0fdfb877d9c753547fa2e2f5ef1fe Mon Sep 17 00:00:00 2001 From: Pratyush Anand Date: Mon, 14 Jan 2013 15:59:33 +0530 Subject: usb: dwc3: gadget: correct return from ep_queue Its better to return from each if condition as they are mutually exclusive. Signed-off-by: Pratyush Anand Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 356a5a2af750..c4ffb3557d62 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1097,6 +1097,7 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) if (ret && ret != -EBUSY) dev_dbg(dwc->dev, "%s: failed to kick transfers\n", dep->name); + return ret; } /* @@ -1113,6 +1114,7 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) if (ret && ret != -EBUSY) dev_dbg(dwc->dev, "%s: failed to kick transfers\n", dep->name); + return ret; } return 0; -- cgit v1.2.3 From cdc359dd87ab6c39a67dab724fd0b61c16e6f08b Mon Sep 17 00:00:00 2001 From: Pratyush Anand Date: Mon, 14 Jan 2013 15:59:34 +0530 Subject: usb: dwc3: gadget: fix isoc END TRANSFER Condition There were still some corner cases where isoc transfer was not able to restart, specially when missed isoc does not happen , and in fact gadget does not queue any new request during giveback. Cleanup function calls giveback first, which provides a way to queue another request to gadget. But gadget did not had any data. So , it did not call ep_queue. To twist it further, gadget did not queue till cleanup for last queued TRB is called. If we ever reach this scenario, we must call END TRANSFER, so that we receive a new xfernotready with information about current microframe number. Also insure that there is no request submitted to core when issuing END TRANSFER. Cc: # v3.8 Signed-off-by: Pratyush Anand Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index c4ffb3557d62..e60e72c57663 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1089,7 +1089,10 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) * notion of current microframe. */ if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { - dwc3_stop_active_transfer(dwc, dep->number); + if (list_empty(&dep->req_queued)) { + dwc3_stop_active_transfer(dwc, dep->number); + dep->flags = DWC3_EP_ENABLED; + } return 0; } @@ -1727,10 +1730,20 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, break; } while (1); - if (list_empty(&dep->req_queued) && - (dep->flags & DWC3_EP_MISSED_ISOC)) { - dwc3_stop_active_transfer(dwc, dep->number); - dep->flags &= ~DWC3_EP_MISSED_ISOC; + if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && + list_empty(&dep->req_queued)) { + if (list_empty(&dep->request_list)) { + /* + * If there is no entry in request list then do + * not issue END TRANSFER now. Just set PENDING + * flag, so that END TRANSFER is issued when an + * entry is added into request list. + */ + dep->flags = DWC3_EP_PENDING_REQUEST; + } else { + dwc3_stop_active_transfer(dwc, dep->number); + dep->flags = DWC3_EP_ENABLED; + } return 1; } -- cgit v1.2.3 From 915e202aeeb59e272992a6364c910aaef3073544 Mon Sep 17 00:00:00 2001 From: Pratyush Anand Date: Mon, 14 Jan 2013 15:59:35 +0530 Subject: usb: dwc3: gadget: fix skip LINK_TRB on ISOC When we reach to link trb, we just need to increase free_slot and then calculate TRB. Return is not correct, as it will cause wrong TRB DMA address to fetch in case of update transfer. Cc: Signed-off-by: Pratyush Anand Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index e60e72c57663..da8d57cb00e8 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -754,21 +754,18 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3 *dwc = dep->dwc; struct dwc3_trb *trb; - unsigned int cur_slot; - dev_vdbg(dwc->dev, "%s: req %p dma %08llx length %d%s%s\n", dep->name, req, (unsigned long long) dma, length, last ? " last" : "", chain ? " chain" : ""); - trb = &dep->trb_pool[dep->free_slot & DWC3_TRB_MASK]; - cur_slot = dep->free_slot; - dep->free_slot++; - /* Skip the LINK-TRB on ISOC */ - if (((cur_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) && + if (((dep->free_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) && usb_endpoint_xfer_isoc(dep->endpoint.desc)) - return; + dep->free_slot++; + + trb = &dep->trb_pool[dep->free_slot & DWC3_TRB_MASK]; + dep->free_slot++; if (!req->trb) { dwc3_gadget_move_request_queued(req); -- cgit v1.2.3 From 1877d6c9a57802d50a059cf2dacdba10168cece7 Mon Sep 17 00:00:00 2001 From: Pratyush Anand Date: Mon, 14 Jan 2013 15:59:36 +0530 Subject: usb: dwc3: gadget: no need to pass params in case of UPDATE_TRANSFER UPDATE_TRANSFER does not need any parameters. So, no need to prepare it. Signed-off-by: Pratyush Anand Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index da8d57cb00e8..686c31c3d87c 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -974,13 +974,14 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param, } memset(¶ms, 0, sizeof(params)); - params.param0 = upper_32_bits(req->trb_dma); - params.param1 = lower_32_bits(req->trb_dma); - if (start_new) + if (start_new) { + params.param0 = upper_32_bits(req->trb_dma); + params.param1 = lower_32_bits(req->trb_dma); cmd = DWC3_DEPCMD_STARTTRANSFER; - else + } else { cmd = DWC3_DEPCMD_UPDATETRANSFER; + } cmd |= DWC3_DEPCMD_PARAM(cmd_param); ret = dwc3_send_gadget_ep_cmd(dwc, dep->number, cmd, ¶ms); -- cgit v1.2.3 From e5ba5ec833aa4a76980b512d6a6779643516b850 Mon Sep 17 00:00:00 2001 From: Pratyush Anand Date: Mon, 14 Jan 2013 15:59:37 +0530 Subject: usb: dwc3: gadget: fix scatter gather implementation To work with scatter gather properly, fixes have been done in number of functions. I will explain requirement of each fixes one by one. start_slot: used to retrieve all request of SG during cleanup dwc3_gadget_giveback: We need to skip link TRB if it was one of the intermediate TRB of SG. dwc3_prepare_one_trb: We need to track all submitted TRBs during cleanup. Since, all TRBs would be serially allocated, so we can just keep starting slot info and we can always find rest of them. We need to pass sg node number, so that we cab appropriately program ISOC_FIRST/ISOC, Chain etc. dwc3_prepare_trbs: last_one should be set when it is last node of SG as well as last node of request_list. __dwc3_cleanup_done_trbs: It has been prepared after re-factorization of dwc3_cleanup_done_reqs. It is called for each TRB of SG. Signed-off-by: Pratyush Anand Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 1 + drivers/usb/dwc3/gadget.c | 218 +++++++++++++++++++++++++++------------------- 2 files changed, 127 insertions(+), 92 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 7610cf5648c1..f02b3e0795e0 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -581,6 +581,7 @@ struct dwc3_request { struct usb_request request; struct list_head list; struct dwc3_ep *dep; + u32 start_slot; u8 epnum; struct dwc3_trb *trb; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 686c31c3d87c..a4d10cffee81 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -241,21 +241,22 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, int status) { struct dwc3 *dwc = dep->dwc; + int i; if (req->queued) { - if (req->request.num_mapped_sgs) - dep->busy_slot += req->request.num_mapped_sgs; - else + i = 0; + do { dep->busy_slot++; - - /* - * Skip LINK TRB. We can't use req->trb and check for - * DWC3_TRBCTL_LINK_TRB because it points the TRB we just - * completed (not the LINK TRB). - */ - if (((dep->busy_slot & DWC3_TRB_MASK) == DWC3_TRB_NUM - 1) && + /* + * Skip LINK TRB. We can't use req->trb and check for + * DWC3_TRBCTL_LINK_TRB because it points the TRB we + * just completed (not the LINK TRB). + */ + if (((dep->busy_slot & DWC3_TRB_MASK) == + DWC3_TRB_NUM- 1) && usb_endpoint_xfer_isoc(dep->endpoint.desc)) - dep->busy_slot++; + dep->busy_slot++; + } while(++i < req->request.num_mapped_sgs); } list_del(&req->list); req->trb = NULL; @@ -749,7 +750,7 @@ static void dwc3_gadget_ep_free_request(struct usb_ep *ep, */ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_request *req, dma_addr_t dma, - unsigned length, unsigned last, unsigned chain) + unsigned length, unsigned last, unsigned chain, unsigned node) { struct dwc3 *dwc = dep->dwc; struct dwc3_trb *trb; @@ -765,14 +766,16 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, dep->free_slot++; trb = &dep->trb_pool[dep->free_slot & DWC3_TRB_MASK]; - dep->free_slot++; if (!req->trb) { dwc3_gadget_move_request_queued(req); req->trb = trb; req->trb_dma = dwc3_trb_dma_offset(dep, trb); + req->start_slot = dep->free_slot & DWC3_TRB_MASK; } + dep->free_slot++; + trb->size = DWC3_TRB_SIZE_LENGTH(length); trb->bpl = lower_32_bits(dma); trb->bph = upper_32_bits(dma); @@ -783,9 +786,12 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, break; case USB_ENDPOINT_XFER_ISOC: - trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST; + if (!node) + trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST; + else + trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS; - if (!req->request.no_interrupt) + if (!req->request.no_interrupt && !chain) trb->ctrl |= DWC3_TRB_CTRL_IOC; break; @@ -804,14 +810,13 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI; trb->ctrl |= DWC3_TRB_CTRL_CSP; - } else { - if (chain) - trb->ctrl |= DWC3_TRB_CTRL_CHN; - - if (last) - trb->ctrl |= DWC3_TRB_CTRL_LST; + } else if (last) { + trb->ctrl |= DWC3_TRB_CTRL_LST; } + if (chain) + trb->ctrl |= DWC3_TRB_CTRL_CHN; + if (usb_endpoint_xfer_bulk(dep->endpoint.desc) && dep->stream_capable) trb->ctrl |= DWC3_TRB_CTRL_SID_SOFN(req->request.stream_id); @@ -882,6 +887,7 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting) list_for_each_entry_safe(req, n, &dep->request_list, list) { unsigned length; dma_addr_t dma; + last_one = false; if (req->request.num_mapped_sgs > 0) { struct usb_request *request = &req->request; @@ -897,7 +903,9 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting) if (i == (request->num_mapped_sgs - 1) || sg_is_last(s)) { - last_one = true; + if (list_is_last(&req->list, + &dep->request_list)) + last_one = true; chain = false; } @@ -909,7 +917,7 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting) chain = false; dwc3_prepare_one_trb(dep, req, dma, length, - last_one, chain); + last_one, chain, i); if (last_one) break; @@ -927,7 +935,7 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting) last_one = 1; dwc3_prepare_one_trb(dep, req, dma, length, - last_one, false); + last_one, false, 0); if (last_one) break; @@ -1642,89 +1650,115 @@ static void dwc3_gadget_release(struct device *dev) } /* -------------------------------------------------------------------------- */ -static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, +static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep, + struct dwc3_request *req, struct dwc3_trb *trb, const struct dwc3_event_depevt *event, int status) { - struct dwc3_request *req; - struct dwc3_trb *trb; unsigned int count; unsigned int s_pkt = 0; unsigned int trb_status; + if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN) + /* + * We continue despite the error. There is not much we + * can do. If we don't clean it up we loop forever. If + * we skip the TRB then it gets overwritten after a + * while since we use them in a ring buffer. A BUG() + * would help. Lets hope that if this occurs, someone + * fixes the root cause instead of looking away :) + */ + dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n", + dep->name, trb); + count = trb->size & DWC3_TRB_SIZE_MASK; + + if (dep->direction) { + if (count) { + trb_status = DWC3_TRB_SIZE_TRBSTS(trb->size); + if (trb_status == DWC3_TRBSTS_MISSED_ISOC) { + dev_dbg(dwc->dev, "incomplete IN transfer %s\n", + dep->name); + /* + * If missed isoc occurred and there is + * no request queued then issue END + * TRANSFER, so that core generates + * next xfernotready and we will issue + * a fresh START TRANSFER. + * If there are still queued request + * then wait, do not issue either END + * or UPDATE TRANSFER, just attach next + * request in request_list during + * giveback.If any future queued request + * is successfully transferred then we + * will issue UPDATE TRANSFER for all + * request in the request_list. + */ + dep->flags |= DWC3_EP_MISSED_ISOC; + } else { + dev_err(dwc->dev, "incomplete IN transfer %s\n", + dep->name); + status = -ECONNRESET; + } + } else { + dep->flags &= ~DWC3_EP_MISSED_ISOC; + } + } else { + if (count && (event->status & DEPEVT_STATUS_SHORT)) + s_pkt = 1; + } + + /* + * We assume here we will always receive the entire data block + * which we should receive. Meaning, if we program RX to + * receive 4K but we receive only 2K, we assume that's all we + * should receive and we simply bounce the request back to the + * gadget driver for further processing. + */ + req->request.actual += req->request.length - count; + if (s_pkt) + return 1; + if ((event->status & DEPEVT_STATUS_LST) && + (trb->ctrl & (DWC3_TRB_CTRL_LST | + DWC3_TRB_CTRL_HWO))) + return 1; + if ((event->status & DEPEVT_STATUS_IOC) && + (trb->ctrl & DWC3_TRB_CTRL_IOC)) + return 1; + return 0; +} + +static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, + const struct dwc3_event_depevt *event, int status) +{ + struct dwc3_request *req; + struct dwc3_trb *trb; + unsigned int slot; + unsigned int i; + int ret; + do { req = next_request(&dep->req_queued); if (!req) { WARN_ON_ONCE(1); return 1; } + i = 0; + do { + slot = req->start_slot + i; + if ((slot == DWC3_TRB_NUM - 1) && + usb_endpoint_xfer_isoc(dep->endpoint.desc)) + slot++; + slot %= DWC3_TRB_NUM; + trb = &dep->trb_pool[slot]; - trb = req->trb; - - if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN) - /* - * We continue despite the error. There is not much we - * can do. If we don't clean it up we loop forever. If - * we skip the TRB then it gets overwritten after a - * while since we use them in a ring buffer. A BUG() - * would help. Lets hope that if this occurs, someone - * fixes the root cause instead of looking away :) - */ - dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n", - dep->name, req->trb); - count = trb->size & DWC3_TRB_SIZE_MASK; - - if (dep->direction) { - if (count) { - trb_status = DWC3_TRB_SIZE_TRBSTS(trb->size); - if (trb_status == DWC3_TRBSTS_MISSED_ISOC) { - dev_dbg(dwc->dev, "incomplete IN transfer %s\n", - dep->name); - /* - * If missed isoc occurred and there is - * no request queued then issue END - * TRANSFER, so that core generates - * next xfernotready and we will issue - * a fresh START TRANSFER. - * If there are still queued request - * then wait, do not issue either END - * or UPDATE TRANSFER, just attach next - * request in request_list during - * giveback.If any future queued request - * is successfully transferred then we - * will issue UPDATE TRANSFER for all - * request in the request_list. - */ - dep->flags |= DWC3_EP_MISSED_ISOC; - } else { - dev_err(dwc->dev, "incomplete IN transfer %s\n", - dep->name); - status = -ECONNRESET; - } - } else { - dep->flags &= ~DWC3_EP_MISSED_ISOC; - } - } else { - if (count && (event->status & DEPEVT_STATUS_SHORT)) - s_pkt = 1; - } + ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb, + event, status); + if (ret) + break; + }while (++i < req->request.num_mapped_sgs); - /* - * We assume here we will always receive the entire data block - * which we should receive. Meaning, if we program RX to - * receive 4K but we receive only 2K, we assume that's all we - * should receive and we simply bounce the request back to the - * gadget driver for further processing. - */ - req->request.actual += req->request.length - count; dwc3_gadget_giveback(dep, req, status); - if (s_pkt) - break; - if ((event->status & DEPEVT_STATUS_LST) && - (trb->ctrl & (DWC3_TRB_CTRL_LST | - DWC3_TRB_CTRL_HWO))) - break; - if ((event->status & DEPEVT_STATUS_IOC) && - (trb->ctrl & DWC3_TRB_CTRL_IOC)) + + if (ret) break; } while (1); -- cgit v1.2.3 From c9fda7d6f62a6520e01652d370654c5657d3c1a1 Mon Sep 17 00:00:00 2001 From: Pratyush Anand Date: Mon, 14 Jan 2013 15:59:38 +0530 Subject: usb: dwc3: gadget: req->queued must be forced to false in cleanup I am not sure, why I found it during SG debugging. But, I noticed that even when req_queued list was empty, there were some request in request_list having queued flag true. If I run test second time, it first removes all request from request_list and hence busy_slot was wrongly incremented. Cc: Signed-off-by: Pratyush Anand Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index a4d10cffee81..38e8d3e5dfd3 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -257,6 +257,7 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, usb_endpoint_xfer_isoc(dep->endpoint.desc)) dep->busy_slot++; } while(++i < req->request.num_mapped_sgs); + req->queued = false; } list_del(&req->list); req->trb = NULL; -- cgit v1.2.3 From 388e5c51135f817f01177c42261f1116a6d7f2ad Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 15 Jan 2013 16:09:21 +0530 Subject: usb: dwc3: remove dwc3 dependency on host AND gadget. DWC3 controller curretly depends on USB && USB_GADGET. Some hardware may like to use only host feature on dwc3, or only gadget feature. So, removing this dependency of USB_DWC3 on USB and USB_GADGET. Adding the mode of operaiton of DWC3 also here HOST/GADGET/DUAL_ROLE based on which features are enabled. [ balbi@ti.com : . make sure we have default modes for all possible Kernel configurations. . Remove the config -> menuconfig change as it's unnecessary . switch over to IS_ENABLED() ] CC: Doug Anderson Signed-off-by: Vivek Gautam Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/Kconfig | 31 ++++++++++++++++++++++++++++++- drivers/usb/dwc3/Makefile | 10 ++++++++-- drivers/usb/dwc3/core.h | 16 +++++++++++++++- drivers/usb/dwc3/debugfs.c | 2 ++ 4 files changed, 55 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index f6a6e070c2ac..77e3f40f5cea 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -1,6 +1,6 @@ config USB_DWC3 tristate "DesignWare USB3 DRD Core Support" - depends on (USB && USB_GADGET) + depends on (USB || USB_GADGET) select USB_OTG_UTILS select USB_XHCI_PLATFORM if USB_SUPPORT && USB_XHCI_HCD help @@ -12,6 +12,35 @@ config USB_DWC3 if USB_DWC3 +choice + bool "DWC3 Mode Selection" + default USB_DWC3_DUAL_ROLE if (USB && USB_GADGET) + default USB_DWC3_HOST if (USB && !USB_GADGET) + default USB_DWC3_GADGET if (!USB && USB_GADGET) + +config USB_DWC3_HOST + bool "Host only mode" + depends on USB + help + Select this when you want to use DWC3 in host mode only, + thereby the gadget feature will be regressed. + +config USB_DWC3_GADGET + bool "Gadget only mode" + depends on USB_GADGET + help + Select this when you want to use DWC3 in gadget mode only, + thereby the host feature will be regressed. + +config USB_DWC3_DUAL_ROLE + bool "Dual Role mode" + depends on (USB && USB_GADGET) + help + This is the default mode of working of DWC3 controller where + both host and gadget features are enabled. + +endchoice + config USB_DWC3_DEBUG bool "Enable Debugging Messages" help diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 4502648b8171..0c7ac92582be 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -4,8 +4,14 @@ ccflags-$(CONFIG_USB_DWC3_VERBOSE) += -DVERBOSE_DEBUG obj-$(CONFIG_USB_DWC3) += dwc3.o dwc3-y := core.o -dwc3-y += host.o -dwc3-y += gadget.o ep0.o + +ifneq ($(filter y,$(CONFIG_USB_DWC3_HOST) $(CONFIG_USB_DWC3_DUAL_ROLE)),) + dwc3-y += host.o +endif + +ifneq ($(filter y,$(CONFIG_USB_DWC3_GADGET) $(CONFIG_USB_DWC3_DUAL_ROLE)),) + dwc3-y += gadget.o ep0.o +endif ifneq ($(CONFIG_DEBUG_FS),) dwc3-y += debugfs.o diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index f02b3e0795e0..b41750660235 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -864,10 +864,24 @@ union dwc3_event { void dwc3_set_mode(struct dwc3 *dwc, u32 mode); int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc); +#if IS_ENABLED(CONFIG_USB_DWC3_HOST) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) int dwc3_host_init(struct dwc3 *dwc); void dwc3_host_exit(struct dwc3 *dwc); - +#else +static inline int dwc3_host_init(struct dwc3 *dwc) +{ return 0; } +static inline void dwc3_host_exit(struct dwc3 *dwc) +{ } +#endif + +#if IS_ENABLED(CONFIG_USB_DWC3_GADGET) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) int dwc3_gadget_init(struct dwc3 *dwc); void dwc3_gadget_exit(struct dwc3 *dwc); +#else +static inline int dwc3_gadget_init(struct dwc3 *dwc) +{ return 0; } +static inline void dwc3_gadget_exit(struct dwc3 *dwc) +{ } +#endif #endif /* __DRIVERS_USB_DWC3_CORE_H */ diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index aff8fd3e7e90..4a752e730c5f 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -661,6 +661,7 @@ int dwc3_debugfs_init(struct dwc3 *dwc) goto err1; } +#if IS_ENABLED(CONFIG_USB_DWC3_GADGET) file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, dwc, &dwc3_mode_fops); if (!file) { @@ -681,6 +682,7 @@ int dwc3_debugfs_init(struct dwc3 *dwc) ret = -ENOMEM; goto err1; } +#endif return 0; -- cgit v1.2.3 From 04a6221c509e90b5f921d408bbf0afcf91147280 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Thu, 10 Jan 2013 16:35:53 +0800 Subject: usb: phy: mxs-phy: add set_suspend API It needs to call set_suspend during USB suspend/resume Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi --- drivers/usb/otg/mxs-phy.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/otg/mxs-phy.c b/drivers/usb/otg/mxs-phy.c index 76302720055a..5158332522b1 100644 --- a/drivers/usb/otg/mxs-phy.c +++ b/drivers/usb/otg/mxs-phy.c @@ -76,6 +76,25 @@ static void mxs_phy_shutdown(struct usb_phy *phy) clk_disable_unprepare(mxs_phy->clk); } +static int mxs_phy_suspend(struct usb_phy *x, int suspend) +{ + struct mxs_phy *mxs_phy = to_mxs_phy(x); + + if (suspend) { + writel_relaxed(0xffffffff, x->io_priv + HW_USBPHY_PWD); + writel_relaxed(BM_USBPHY_CTRL_CLKGATE, + x->io_priv + HW_USBPHY_CTRL_SET); + clk_disable_unprepare(mxs_phy->clk); + } else { + clk_prepare_enable(mxs_phy->clk); + writel_relaxed(BM_USBPHY_CTRL_CLKGATE, + x->io_priv + HW_USBPHY_CTRL_CLR); + writel_relaxed(0, x->io_priv + HW_USBPHY_PWD); + } + + return 0; +} + static int mxs_phy_on_connect(struct usb_phy *phy, enum usb_device_speed speed) { @@ -137,6 +156,7 @@ static int mxs_phy_probe(struct platform_device *pdev) mxs_phy->phy.label = DRIVER_NAME; mxs_phy->phy.init = mxs_phy_init; mxs_phy->phy.shutdown = mxs_phy_shutdown; + mxs_phy->phy.set_suspend = mxs_phy_suspend; mxs_phy->phy.notify_connect = mxs_phy_on_connect; mxs_phy->phy.notify_disconnect = mxs_phy_on_disconnect; -- cgit v1.2.3 From 337dc3a7684cf6577b5595b9bb96e1af06baec41 Mon Sep 17 00:00:00 2001 From: Praveen Paneri Date: Fri, 23 Nov 2012 16:03:06 +0530 Subject: usb: phy: samsung: Introducing usb phy driver for hsotg This driver uses usb_phy interface to interact with s3c-hsotg. Supports phy_init and phy_shutdown functions to enable/disable usb phy. Support will be extended to host controllers and more Samsung SoCs. Signed-off-by: Praveen Paneri Acked-by: Heiko Stuebner Acked-by: Kyungmin Park Signed-off-by: Felipe Balbi --- .../devicetree/bindings/usb/samsung-usbphy.txt | 11 + drivers/usb/phy/Kconfig | 8 + drivers/usb/phy/Makefile | 1 + drivers/usb/phy/samsung-usbphy.c | 354 +++++++++++++++++++++ include/linux/platform_data/samsung-usbphy.h | 27 ++ 5 files changed, 401 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/samsung-usbphy.txt create mode 100644 drivers/usb/phy/samsung-usbphy.c create mode 100644 include/linux/platform_data/samsung-usbphy.h (limited to 'drivers') diff --git a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt new file mode 100644 index 000000000000..7b26e2d6ea04 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt @@ -0,0 +1,11 @@ +* Samsung's usb phy transceiver + +The Samsung's phy transceiver is used for controlling usb otg phy for +s3c-hsotg usb device controller. +TODO: Adding the PHY binding with controller(s) according to the under +developement generic PHY driver. + +Required properties: +- compatible : should be "samsung,exynos4210-usbphy" +- reg : base physical address of the phy registers and length of memory mapped + region. diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 5de6e7f39f9c..36a85b675429 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -45,3 +45,11 @@ config USB_RCAR_PHY To compile this driver as a module, choose M here: the module will be called rcar-phy. + +config SAMSUNG_USBPHY + bool "Samsung USB PHY controller Driver" + depends on USB_S3C_HSOTG + select USB_OTG_UTILS + help + Enable this to support Samsung USB phy controller for samsung + SoCs. diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index 1a579a860a03..ec304f642402 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -9,3 +9,4 @@ obj-$(CONFIG_USB_ISP1301) += isp1301.o obj-$(CONFIG_MV_U3D_PHY) += mv_u3d_phy.o obj-$(CONFIG_USB_EHCI_TEGRA) += tegra_usb_phy.o obj-$(CONFIG_USB_RCAR_PHY) += rcar-phy.o +obj-$(CONFIG_SAMSUNG_USBPHY) += samsung-usbphy.o diff --git a/drivers/usb/phy/samsung-usbphy.c b/drivers/usb/phy/samsung-usbphy.c new file mode 100644 index 000000000000..5c5e1bb5de7b --- /dev/null +++ b/drivers/usb/phy/samsung-usbphy.c @@ -0,0 +1,354 @@ +/* linux/drivers/usb/phy/samsung-usbphy.c + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Praveen Paneri + * + * Samsung USB2.0 High-speed OTG transceiver, talks to S3C HS OTG controller + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Register definitions */ + +#define SAMSUNG_PHYPWR (0x00) + +#define PHYPWR_NORMAL_MASK (0x19 << 0) +#define PHYPWR_OTG_DISABLE (0x1 << 4) +#define PHYPWR_ANALOG_POWERDOWN (0x1 << 3) +#define PHYPWR_FORCE_SUSPEND (0x1 << 1) +/* For Exynos4 */ +#define PHYPWR_NORMAL_MASK_PHY0 (0x39 << 0) +#define PHYPWR_SLEEP_PHY0 (0x1 << 5) + +#define SAMSUNG_PHYCLK (0x04) + +#define PHYCLK_MODE_USB11 (0x1 << 6) +#define PHYCLK_EXT_OSC (0x1 << 5) +#define PHYCLK_COMMON_ON_N (0x1 << 4) +#define PHYCLK_ID_PULL (0x1 << 2) +#define PHYCLK_CLKSEL_MASK (0x3 << 0) +#define PHYCLK_CLKSEL_48M (0x0 << 0) +#define PHYCLK_CLKSEL_12M (0x2 << 0) +#define PHYCLK_CLKSEL_24M (0x3 << 0) + +#define SAMSUNG_RSTCON (0x08) + +#define RSTCON_PHYLINK_SWRST (0x1 << 2) +#define RSTCON_HLINK_SWRST (0x1 << 1) +#define RSTCON_SWRST (0x1 << 0) + +#ifndef MHZ +#define MHZ (1000*1000) +#endif + +enum samsung_cpu_type { + TYPE_S3C64XX, + TYPE_EXYNOS4210, +}; + +/* + * struct samsung_usbphy - transceiver driver state + * @phy: transceiver structure + * @plat: platform data + * @dev: The parent device supplied to the probe function + * @clk: usb phy clock + * @regs: usb phy register memory base + * @ref_clk_freq: reference clock frequency selection + * @cpu_type: machine identifier + */ +struct samsung_usbphy { + struct usb_phy phy; + struct samsung_usbphy_data *plat; + struct device *dev; + struct clk *clk; + void __iomem *regs; + int ref_clk_freq; + int cpu_type; +}; + +#define phy_to_sphy(x) container_of((x), struct samsung_usbphy, phy) + +/* + * Returns reference clock frequency selection value + */ +static int samsung_usbphy_get_refclk_freq(struct samsung_usbphy *sphy) +{ + struct clk *ref_clk; + int refclk_freq = 0; + + ref_clk = clk_get(sphy->dev, "xusbxti"); + if (IS_ERR(ref_clk)) { + dev_err(sphy->dev, "Failed to get reference clock\n"); + return PTR_ERR(ref_clk); + } + + switch (clk_get_rate(ref_clk)) { + case 12 * MHZ: + refclk_freq = PHYCLK_CLKSEL_12M; + break; + case 24 * MHZ: + refclk_freq = PHYCLK_CLKSEL_24M; + break; + case 48 * MHZ: + refclk_freq = PHYCLK_CLKSEL_48M; + break; + default: + if (sphy->cpu_type == TYPE_S3C64XX) + refclk_freq = PHYCLK_CLKSEL_48M; + else + refclk_freq = PHYCLK_CLKSEL_24M; + break; + } + clk_put(ref_clk); + + return refclk_freq; +} + +static void samsung_usbphy_enable(struct samsung_usbphy *sphy) +{ + void __iomem *regs = sphy->regs; + u32 phypwr; + u32 phyclk; + u32 rstcon; + + /* set clock frequency for PLL */ + phyclk = sphy->ref_clk_freq; + phypwr = readl(regs + SAMSUNG_PHYPWR); + rstcon = readl(regs + SAMSUNG_RSTCON); + + switch (sphy->cpu_type) { + case TYPE_S3C64XX: + phyclk &= ~PHYCLK_COMMON_ON_N; + phypwr &= ~PHYPWR_NORMAL_MASK; + rstcon |= RSTCON_SWRST; + break; + case TYPE_EXYNOS4210: + phypwr &= ~PHYPWR_NORMAL_MASK_PHY0; + rstcon |= RSTCON_SWRST; + default: + break; + } + + writel(phyclk, regs + SAMSUNG_PHYCLK); + /* Configure PHY0 for normal operation*/ + writel(phypwr, regs + SAMSUNG_PHYPWR); + /* reset all ports of PHY and Link */ + writel(rstcon, regs + SAMSUNG_RSTCON); + udelay(10); + rstcon &= ~RSTCON_SWRST; + writel(rstcon, regs + SAMSUNG_RSTCON); +} + +static void samsung_usbphy_disable(struct samsung_usbphy *sphy) +{ + void __iomem *regs = sphy->regs; + u32 phypwr; + + phypwr = readl(regs + SAMSUNG_PHYPWR); + + switch (sphy->cpu_type) { + case TYPE_S3C64XX: + phypwr |= PHYPWR_NORMAL_MASK; + break; + case TYPE_EXYNOS4210: + phypwr |= PHYPWR_NORMAL_MASK_PHY0; + default: + break; + } + + /* Disable analog and otg block power */ + writel(phypwr, regs + SAMSUNG_PHYPWR); +} + +/* + * The function passed to the usb driver for phy initialization + */ +static int samsung_usbphy_init(struct usb_phy *phy) +{ + struct samsung_usbphy *sphy; + int ret = 0; + + sphy = phy_to_sphy(phy); + + /* Enable the phy clock */ + ret = clk_prepare_enable(sphy->clk); + if (ret) { + dev_err(sphy->dev, "%s: clk_prepare_enable failed\n", __func__); + return ret; + } + + /* Disable phy isolation */ + if (sphy->plat && sphy->plat->pmu_isolation) + sphy->plat->pmu_isolation(false); + + /* Initialize usb phy registers */ + samsung_usbphy_enable(sphy); + + /* Disable the phy clock */ + clk_disable_unprepare(sphy->clk); + return ret; +} + +/* + * The function passed to the usb driver for phy shutdown + */ +static void samsung_usbphy_shutdown(struct usb_phy *phy) +{ + struct samsung_usbphy *sphy; + + sphy = phy_to_sphy(phy); + + if (clk_prepare_enable(sphy->clk)) { + dev_err(sphy->dev, "%s: clk_prepare_enable failed\n", __func__); + return; + } + + /* De-initialize usb phy registers */ + samsung_usbphy_disable(sphy); + + /* Enable phy isolation */ + if (sphy->plat && sphy->plat->pmu_isolation) + sphy->plat->pmu_isolation(true); + + clk_disable_unprepare(sphy->clk); +} + +static const struct of_device_id samsung_usbphy_dt_match[]; + +static inline int samsung_usbphy_get_driver_data(struct platform_device *pdev) +{ + if (pdev->dev.of_node) { + const struct of_device_id *match; + match = of_match_node(samsung_usbphy_dt_match, + pdev->dev.of_node); + return (int) match->data; + } + + return platform_get_device_id(pdev)->driver_data; +} + +static int __devinit samsung_usbphy_probe(struct platform_device *pdev) +{ + struct samsung_usbphy *sphy; + struct samsung_usbphy_data *pdata; + struct device *dev = &pdev->dev; + struct resource *phy_mem; + void __iomem *phy_base; + struct clk *clk; + + pdata = pdev->dev.platform_data; + if (!pdata) { + dev_err(&pdev->dev, "%s: no platform data defined\n", __func__); + return -EINVAL; + } + + phy_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!phy_mem) { + dev_err(dev, "%s: missing mem resource\n", __func__); + return -ENODEV; + } + + phy_base = devm_request_and_ioremap(dev, phy_mem); + if (!phy_base) { + dev_err(dev, "%s: register mapping failed\n", __func__); + return -ENXIO; + } + + sphy = devm_kzalloc(dev, sizeof(*sphy), GFP_KERNEL); + if (!sphy) + return -ENOMEM; + + clk = devm_clk_get(dev, "otg"); + if (IS_ERR(clk)) { + dev_err(dev, "Failed to get otg clock\n"); + return PTR_ERR(clk); + } + + sphy->dev = &pdev->dev; + sphy->plat = pdata; + sphy->regs = phy_base; + sphy->clk = clk; + sphy->phy.dev = sphy->dev; + sphy->phy.label = "samsung-usbphy"; + sphy->phy.init = samsung_usbphy_init; + sphy->phy.shutdown = samsung_usbphy_shutdown; + sphy->cpu_type = samsung_usbphy_get_driver_data(pdev); + sphy->ref_clk_freq = samsung_usbphy_get_refclk_freq(sphy); + + platform_set_drvdata(pdev, sphy); + + return usb_add_phy(&sphy->phy, USB_PHY_TYPE_USB2); +} + +static int __exit samsung_usbphy_remove(struct platform_device *pdev) +{ + struct samsung_usbphy *sphy = platform_get_drvdata(pdev); + + usb_remove_phy(&sphy->phy); + + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id samsung_usbphy_dt_match[] = { + { + .compatible = "samsung,s3c64xx-usbphy", + .data = (void *)TYPE_S3C64XX, + }, { + .compatible = "samsung,exynos4210-usbphy", + .data = (void *)TYPE_EXYNOS4210, + }, + {}, +}; +MODULE_DEVICE_TABLE(of, samsung_usbphy_dt_match); +#endif + +static struct platform_device_id samsung_usbphy_driver_ids[] = { + { + .name = "s3c64xx-usbphy", + .driver_data = TYPE_S3C64XX, + }, { + .name = "exynos4210-usbphy", + .driver_data = TYPE_EXYNOS4210, + }, + {}, +}; + +MODULE_DEVICE_TABLE(platform, samsung_usbphy_driver_ids); + +static struct platform_driver samsung_usbphy_driver = { + .probe = samsung_usbphy_probe, + .remove = __devexit_p(samsung_usbphy_remove), + .id_table = samsung_usbphy_driver_ids, + .driver = { + .name = "samsung-usbphy", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(samsung_usbphy_dt_match), + }, +}; + +module_platform_driver(samsung_usbphy_driver); + +MODULE_DESCRIPTION("Samsung USB phy controller"); +MODULE_AUTHOR("Praveen Paneri "); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:samsung-usbphy"); diff --git a/include/linux/platform_data/samsung-usbphy.h b/include/linux/platform_data/samsung-usbphy.h new file mode 100644 index 000000000000..1bd24cba982b --- /dev/null +++ b/include/linux/platform_data/samsung-usbphy.h @@ -0,0 +1,27 @@ +/* + * Copyright (C) 2012 Samsung Electronics Co.Ltd + * http://www.samsung.com/ + * Author: Praveen Paneri + * + * Defines platform data for samsung usb phy driver. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#ifndef __SAMSUNG_USBPHY_PLATFORM_H +#define __SAMSUNG_USBPHY_PLATFORM_H + +/** + * samsung_usbphy_data - Platform data for USB PHY driver. + * @pmu_isolation: Function to control usb phy isolation in PMU. + */ +struct samsung_usbphy_data { + void (*pmu_isolation)(int on); +}; + +extern void samsung_usbphy_set_pdata(struct samsung_usbphy_data *pd); + +#endif /* __SAMSUNG_USBPHY_PLATFORM_H */ -- cgit v1.2.3 From b2e587dbb7a7554b56d2f38e284ad975d2f00181 Mon Sep 17 00:00:00 2001 From: Praveen Paneri Date: Wed, 14 Nov 2012 15:57:16 +0530 Subject: usb: phy: s3c-hsotg: adding phy driver support Adding the transceiver to hsotg driver. Keeping the platform data for continuing the smooth operation for boards which still uses it Signed-off-by: Praveen Paneri Acked-by: Kyungmin Park Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c-hsotg.c | 37 +++++++++++++++++++++++++++---------- 1 file changed, 27 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index 141971d9051e..2143df358072 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -32,6 +32,7 @@ #include #include +#include #include #include @@ -133,7 +134,9 @@ struct s3c_hsotg_ep { * struct s3c_hsotg - driver state. * @dev: The parent device supplied to the probe function * @driver: USB gadget driver - * @plat: The platform specific configuration data. + * @phy: The otg phy transceiver structure for phy control. + * @plat: The platform specific configuration data. This can be removed once + * all SoCs support usb transceiver. * @regs: The memory area mapped for accessing registers. * @irq: The IRQ number we are using * @supplies: Definition of USB power supplies @@ -153,6 +156,7 @@ struct s3c_hsotg_ep { struct s3c_hsotg { struct device *dev; struct usb_gadget_driver *driver; + struct usb_phy *phy; struct s3c_hsotg_plat *plat; spinlock_t lock; @@ -2854,7 +2858,10 @@ static void s3c_hsotg_phy_enable(struct s3c_hsotg *hsotg) struct platform_device *pdev = to_platform_device(hsotg->dev); dev_dbg(hsotg->dev, "pdev 0x%p\n", pdev); - if (hsotg->plat->phy_init) + + if (hsotg->phy) + usb_phy_init(hsotg->phy); + else if (hsotg->plat->phy_init) hsotg->plat->phy_init(pdev, hsotg->plat->phy_type); } @@ -2869,7 +2876,9 @@ static void s3c_hsotg_phy_disable(struct s3c_hsotg *hsotg) { struct platform_device *pdev = to_platform_device(hsotg->dev); - if (hsotg->plat->phy_exit) + if (hsotg->phy) + usb_phy_shutdown(hsotg->phy); + else if (hsotg->plat->phy_exit) hsotg->plat->phy_exit(pdev, hsotg->plat->phy_type); } @@ -3493,6 +3502,7 @@ static void s3c_hsotg_release(struct device *dev) static int s3c_hsotg_probe(struct platform_device *pdev) { struct s3c_hsotg_plat *plat = pdev->dev.platform_data; + struct usb_phy *phy; struct device *dev = &pdev->dev; struct s3c_hsotg_ep *eps; struct s3c_hsotg *hsotg; @@ -3501,20 +3511,27 @@ static int s3c_hsotg_probe(struct platform_device *pdev) int ret; int i; - plat = pdev->dev.platform_data; - if (!plat) { - dev_err(&pdev->dev, "no platform data defined\n"); - return -EINVAL; - } - hsotg = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsotg), GFP_KERNEL); if (!hsotg) { dev_err(dev, "cannot get memory\n"); return -ENOMEM; } + phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(phy)) { + /* Fallback for pdata */ + plat = pdev->dev.platform_data; + if (!plat) { + dev_err(&pdev->dev, "no platform data or transceiver defined\n"); + return -EPROBE_DEFER; + } else { + hsotg->plat = plat; + } + } else { + hsotg->phy = phy; + } + hsotg->dev = dev; - hsotg->plat = plat; hsotg->clk = devm_clk_get(&pdev->dev, "otg"); if (IS_ERR(hsotg->clk)) { -- cgit v1.2.3 From 63a1307930867a45f86a1a69f80315b2df7b7b49 Mon Sep 17 00:00:00 2001 From: Cesar Eduardo Barros Date: Tue, 4 Dec 2012 20:21:12 -0200 Subject: usb: phy: mv-otg: use to_delayed_work instead of cast Directly casting a work_struct pointer to a delayed_work is risky if the work member of struct delayed_work is ever moved from being the first member. Instead, use the inline function to_delayed_work(), which does the same cast in a safer way (using container_of). Signed-off-by: Cesar Eduardo Barros Signed-off-by: Felipe Balbi --- drivers/usb/otg/mv_otg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/otg/mv_otg.c b/drivers/usb/otg/mv_otg.c index 1dd57504186d..5104bc2b67b3 100644 --- a/drivers/usb/otg/mv_otg.c +++ b/drivers/usb/otg/mv_otg.c @@ -420,7 +420,7 @@ static void mv_otg_work(struct work_struct *work) struct usb_otg *otg; int old_state; - mvotg = container_of((struct delayed_work *)work, struct mv_otg, work); + mvotg = container_of(to_delayed_work(work), struct mv_otg, work); run: /* work queue is single thread, or we need spin_lock to protect */ -- cgit v1.2.3 From 69f0946a8db75d6de377c6a5796aa2e417c3c83a Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 15 Jan 2013 11:40:25 +0530 Subject: usb: phy: samsung: Add support to set pmu isolation Adding support to parse device node data in order to get required properties to set pmu isolation for usb-phy. Signed-off-by: Vivek Gautam Acked-by: Kukjin Kim Reviewed-by: Sylwester Nawrocki Reviewed-by: Doug Anderson Signed-off-by: Felipe Balbi --- .../devicetree/bindings/usb/samsung-usbphy.txt | 36 +++++ drivers/usb/phy/samsung-usbphy.c | 163 ++++++++++++++++++--- 2 files changed, 177 insertions(+), 22 deletions(-) (limited to 'drivers') diff --git a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt index 7b26e2d6ea04..22d06cfdb076 100644 --- a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt +++ b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt @@ -9,3 +9,39 @@ Required properties: - compatible : should be "samsung,exynos4210-usbphy" - reg : base physical address of the phy registers and length of memory mapped region. + +Optional properties: +- #address-cells: should be '1' when usbphy node has a child node with 'reg' + property. +- #size-cells: should be '1' when usbphy node has a child node with 'reg' + property. +- ranges: allows valid translation between child's address space and parent's + address space. + +- The child node 'usbphy-sys' to the node 'usbphy' is for the system controller + interface for usb-phy. It should provide the following information required by + usb-phy controller to control phy. + - reg : base physical address of PHY_CONTROL registers. + The size of this register is the total sum of size of all PHY_CONTROL + registers that the SoC has. For example, the size will be + '0x4' in case we have only one PHY_CONTROL register (e.g. + OTHERS register in S3C64XX or USB_PHY_CONTROL register in S5PV210) + and, '0x8' in case we have two PHY_CONTROL registers (e.g. + USBDEVICE_PHY_CONTROL and USBHOST_PHY_CONTROL registers in exynos4x). + and so on. + +Example: + - Exynos4210 + + usbphy@125B0000 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "samsung,exynos4210-usbphy"; + reg = <0x125B0000 0x100>; + ranges; + + usbphy-sys { + /* USB device and host PHY_CONTROL registers */ + reg = <0x10020704 0x8>; + }; + }; diff --git a/drivers/usb/phy/samsung-usbphy.c b/drivers/usb/phy/samsung-usbphy.c index 5c5e1bb5de7b..30aebb59d803 100644 --- a/drivers/usb/phy/samsung-usbphy.c +++ b/drivers/usb/phy/samsung-usbphy.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -60,20 +61,46 @@ #define MHZ (1000*1000) #endif +#define S3C64XX_USBPHY_ENABLE (0x1 << 16) +#define EXYNOS_USBPHY_ENABLE (0x1 << 0) + enum samsung_cpu_type { TYPE_S3C64XX, TYPE_EXYNOS4210, }; +/* + * struct samsung_usbphy_drvdata - driver data for various SoC variants + * @cpu_type: machine identifier + * @devphy_en_mask: device phy enable mask for PHY CONTROL register + * @devphy_reg_offset: offset to DEVICE PHY CONTROL register from + * mapped address of system controller. + * + * Here we have a separate mask for device type phy. + * Having different masks for host and device type phy helps + * in setting independent masks in case of SoCs like S5PV210, + * in which PHY0 and PHY1 enable bits belong to same register + * placed at position 0 and 1 respectively. + * Although for newer SoCs like exynos these bits belong to + * different registers altogether placed at position 0. + */ +struct samsung_usbphy_drvdata { + int cpu_type; + int devphy_en_mask; + u32 devphy_reg_offset; +}; + /* * struct samsung_usbphy - transceiver driver state * @phy: transceiver structure * @plat: platform data * @dev: The parent device supplied to the probe function * @clk: usb phy clock - * @regs: usb phy register memory base + * @regs: usb phy controller registers memory base + * @pmuregs: USB device PHY_CONTROL register memory base * @ref_clk_freq: reference clock frequency selection - * @cpu_type: machine identifier + * @drv_data: driver data available for different SoCs + * @lock: lock for phy operations */ struct samsung_usbphy { struct usb_phy phy; @@ -81,12 +108,66 @@ struct samsung_usbphy { struct device *dev; struct clk *clk; void __iomem *regs; + void __iomem *pmuregs; int ref_clk_freq; - int cpu_type; + const struct samsung_usbphy_drvdata *drv_data; + spinlock_t lock; }; #define phy_to_sphy(x) container_of((x), struct samsung_usbphy, phy) +static int samsung_usbphy_parse_dt(struct samsung_usbphy *sphy) +{ + struct device_node *usbphy_sys; + + /* Getting node for system controller interface for usb-phy */ + usbphy_sys = of_get_child_by_name(sphy->dev->of_node, "usbphy-sys"); + if (!usbphy_sys) { + dev_err(sphy->dev, "No sys-controller interface for usb-phy\n"); + return -ENODEV; + } + + sphy->pmuregs = of_iomap(usbphy_sys, 0); + + of_node_put(usbphy_sys); + + if (sphy->pmuregs == NULL) { + dev_err(sphy->dev, "Can't get usb-phy pmu control register\n"); + return -ENODEV; + } + + return 0; +} + +/* + * Set isolation here for phy. + * Here 'on = true' would mean USB PHY block is isolated, hence + * de-activated and vice-versa. + */ +static void samsung_usbphy_set_isolation(struct samsung_usbphy *sphy, bool on) +{ + void __iomem *reg; + u32 reg_val; + u32 en_mask; + + if (!sphy->pmuregs) { + dev_warn(sphy->dev, "Can't set pmu isolation\n"); + return; + } + + reg = sphy->pmuregs + sphy->drv_data->devphy_reg_offset; + en_mask = sphy->drv_data->devphy_en_mask; + + reg_val = readl(reg); + + if (on) + reg_val &= ~en_mask; + else + reg_val |= en_mask; + + writel(reg_val, reg); +} + /* * Returns reference clock frequency selection value */ @@ -112,7 +193,7 @@ static int samsung_usbphy_get_refclk_freq(struct samsung_usbphy *sphy) refclk_freq = PHYCLK_CLKSEL_48M; break; default: - if (sphy->cpu_type == TYPE_S3C64XX) + if (sphy->drv_data->cpu_type == TYPE_S3C64XX) refclk_freq = PHYCLK_CLKSEL_48M; else refclk_freq = PHYCLK_CLKSEL_24M; @@ -135,7 +216,7 @@ static void samsung_usbphy_enable(struct samsung_usbphy *sphy) phypwr = readl(regs + SAMSUNG_PHYPWR); rstcon = readl(regs + SAMSUNG_RSTCON); - switch (sphy->cpu_type) { + switch (sphy->drv_data->cpu_type) { case TYPE_S3C64XX: phyclk &= ~PHYCLK_COMMON_ON_N; phypwr &= ~PHYPWR_NORMAL_MASK; @@ -165,7 +246,7 @@ static void samsung_usbphy_disable(struct samsung_usbphy *sphy) phypwr = readl(regs + SAMSUNG_PHYPWR); - switch (sphy->cpu_type) { + switch (sphy->drv_data->cpu_type) { case TYPE_S3C64XX: phypwr |= PHYPWR_NORMAL_MASK; break; @@ -185,6 +266,7 @@ static void samsung_usbphy_disable(struct samsung_usbphy *sphy) static int samsung_usbphy_init(struct usb_phy *phy) { struct samsung_usbphy *sphy; + unsigned long flags; int ret = 0; sphy = phy_to_sphy(phy); @@ -196,13 +278,19 @@ static int samsung_usbphy_init(struct usb_phy *phy) return ret; } + spin_lock_irqsave(&sphy->lock, flags); + /* Disable phy isolation */ if (sphy->plat && sphy->plat->pmu_isolation) sphy->plat->pmu_isolation(false); + else + samsung_usbphy_set_isolation(sphy, false); /* Initialize usb phy registers */ samsung_usbphy_enable(sphy); + spin_unlock_irqrestore(&sphy->lock, flags); + /* Disable the phy clock */ clk_disable_unprepare(sphy->clk); return ret; @@ -214,6 +302,7 @@ static int samsung_usbphy_init(struct usb_phy *phy) static void samsung_usbphy_shutdown(struct usb_phy *phy) { struct samsung_usbphy *sphy; + unsigned long flags; sphy = phy_to_sphy(phy); @@ -222,44 +311,47 @@ static void samsung_usbphy_shutdown(struct usb_phy *phy) return; } + spin_lock_irqsave(&sphy->lock, flags); + /* De-initialize usb phy registers */ samsung_usbphy_disable(sphy); /* Enable phy isolation */ if (sphy->plat && sphy->plat->pmu_isolation) sphy->plat->pmu_isolation(true); + else + samsung_usbphy_set_isolation(sphy, true); + + spin_unlock_irqrestore(&sphy->lock, flags); clk_disable_unprepare(sphy->clk); } static const struct of_device_id samsung_usbphy_dt_match[]; -static inline int samsung_usbphy_get_driver_data(struct platform_device *pdev) +static inline const struct samsung_usbphy_drvdata +*samsung_usbphy_get_driver_data(struct platform_device *pdev) { if (pdev->dev.of_node) { const struct of_device_id *match; match = of_match_node(samsung_usbphy_dt_match, pdev->dev.of_node); - return (int) match->data; + return match->data; } - return platform_get_device_id(pdev)->driver_data; + return (struct samsung_usbphy_drvdata *) + platform_get_device_id(pdev)->driver_data; } static int __devinit samsung_usbphy_probe(struct platform_device *pdev) { struct samsung_usbphy *sphy; - struct samsung_usbphy_data *pdata; + struct samsung_usbphy_data *pdata = pdev->dev.platform_data; struct device *dev = &pdev->dev; struct resource *phy_mem; void __iomem *phy_base; struct clk *clk; - - pdata = pdev->dev.platform_data; - if (!pdata) { - dev_err(&pdev->dev, "%s: no platform data defined\n", __func__); - return -EINVAL; - } + int ret; phy_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!phy_mem) { @@ -283,7 +375,19 @@ static int __devinit samsung_usbphy_probe(struct platform_device *pdev) return PTR_ERR(clk); } - sphy->dev = &pdev->dev; + sphy->dev = dev; + + if (dev->of_node) { + ret = samsung_usbphy_parse_dt(sphy); + if (ret < 0) + return ret; + } else { + if (!pdata) { + dev_err(dev, "no platform data specified\n"); + return -EINVAL; + } + } + sphy->plat = pdata; sphy->regs = phy_base; sphy->clk = clk; @@ -291,9 +395,11 @@ static int __devinit samsung_usbphy_probe(struct platform_device *pdev) sphy->phy.label = "samsung-usbphy"; sphy->phy.init = samsung_usbphy_init; sphy->phy.shutdown = samsung_usbphy_shutdown; - sphy->cpu_type = samsung_usbphy_get_driver_data(pdev); + sphy->drv_data = samsung_usbphy_get_driver_data(pdev); sphy->ref_clk_freq = samsung_usbphy_get_refclk_freq(sphy); + spin_lock_init(&sphy->lock); + platform_set_drvdata(pdev, sphy); return usb_add_phy(&sphy->phy, USB_PHY_TYPE_USB2); @@ -305,17 +411,30 @@ static int __exit samsung_usbphy_remove(struct platform_device *pdev) usb_remove_phy(&sphy->phy); + if (sphy->pmuregs) + iounmap(sphy->pmuregs); + return 0; } +static const struct samsung_usbphy_drvdata usbphy_s3c64xx = { + .cpu_type = TYPE_S3C64XX, + .devphy_en_mask = S3C64XX_USBPHY_ENABLE, +}; + +static const struct samsung_usbphy_drvdata usbphy_exynos4 = { + .cpu_type = TYPE_EXYNOS4210, + .devphy_en_mask = EXYNOS_USBPHY_ENABLE, +}; + #ifdef CONFIG_OF static const struct of_device_id samsung_usbphy_dt_match[] = { { .compatible = "samsung,s3c64xx-usbphy", - .data = (void *)TYPE_S3C64XX, + .data = &usbphy_s3c64xx, }, { .compatible = "samsung,exynos4210-usbphy", - .data = (void *)TYPE_EXYNOS4210, + .data = &usbphy_exynos4, }, {}, }; @@ -325,10 +444,10 @@ MODULE_DEVICE_TABLE(of, samsung_usbphy_dt_match); static struct platform_device_id samsung_usbphy_driver_ids[] = { { .name = "s3c64xx-usbphy", - .driver_data = TYPE_S3C64XX, + .driver_data = (unsigned long)&usbphy_s3c64xx, }, { .name = "exynos4210-usbphy", - .driver_data = TYPE_EXYNOS4210, + .driver_data = (unsigned long)&usbphy_exynos4, }, {}, }; -- cgit v1.2.3 From 77de2518e854501c1542199449354fab4b2377ac Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 14 Jan 2013 16:52:54 +0100 Subject: USB: io_ti: move write-fifo flushing to close Move write-fifo flushing from chase_port to close where it belongs. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_ti.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 58184f3de686..596f8c9474b4 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -521,8 +521,7 @@ exit_is_tx_active: return bytes_left; } -static void chase_port(struct edgeport_port *port, unsigned long timeout, - int flush) +static void chase_port(struct edgeport_port *port, unsigned long timeout) { int baud_rate; struct tty_struct *tty = tty_port_tty_get(&port->port->port); @@ -550,8 +549,6 @@ static void chase_port(struct edgeport_port *port, unsigned long timeout, } set_current_state(TASK_RUNNING); remove_wait_queue(&tty->write_wait, &wait); - if (flush) - kfifo_reset_out(&port->write_fifo); spin_unlock_irqrestore(&port->ep_lock, flags); tty_kref_put(tty); @@ -1956,6 +1953,7 @@ static void edge_close(struct usb_serial_port *port) struct edgeport_serial *edge_serial; struct edgeport_port *edge_port; struct usb_serial *serial = port->serial; + unsigned long flags; int port_number; edge_serial = usb_get_serial_data(port->serial); @@ -1967,12 +1965,14 @@ static void edge_close(struct usb_serial_port *port) * this flag and dump add read data */ edge_port->close_pending = 1; - /* chase the port close and flush */ - chase_port(edge_port, (HZ * closing_wait) / 100, 1); + chase_port(edge_port, (HZ * closing_wait) / 100); usb_kill_urb(port->read_urb); usb_kill_urb(port->write_urb); edge_port->ep_write_urb_in_use = 0; + spin_lock_irqsave(&edge_port->ep_lock, flags); + kfifo_reset_out(&edge_port->write_fifo); + spin_unlock_irqrestore(&edge_port->ep_lock, flags); /* assuming we can still talk to the device, * send a close port command to it */ @@ -2515,7 +2515,7 @@ static void edge_break(struct tty_struct *tty, int break_state) int bv = 0; /* Off */ /* chase the port close */ - chase_port(edge_port, 0, 0); + chase_port(edge_port, 0); if (break_state == -1) bv = 1; /* On */ -- cgit v1.2.3 From fcdb6a21903bcab0b5f788ba7eb0c31dd06040fd Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 14 Jan 2013 16:52:55 +0100 Subject: USB: io_ti: use tty-port drain delay Use tty-port drain delay rather than custom implementation in chase_port. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_ti.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 596f8c9474b4..3abbdaad838d 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -523,7 +523,6 @@ exit_is_tx_active: static void chase_port(struct edgeport_port *port, unsigned long timeout) { - int baud_rate; struct tty_struct *tty = tty_port_tty_get(&port->port->port); struct usb_serial *serial = port->port->serial; wait_queue_t wait; @@ -561,17 +560,6 @@ static void chase_port(struct edgeport_port *port, unsigned long timeout) break; msleep(10); } - - /* disconnected */ - if (serial->disconnected) - return; - - /* wait one more character time, based on baud rate */ - /* (tx_active doesn't seem to wait for the last byte) */ - baud_rate = port->baud_rate; - if (baud_rate == 0) - baud_rate = 50; - msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); } static int choose_config(struct usb_device *dev) @@ -1938,6 +1926,8 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) ++edge_serial->num_ports_open; + port->port.drain_delay = 1; + goto release_es_lock; unlink_int_urb: -- cgit v1.2.3 From 810360a03597afc0d43a45798a52cfb69b8453d3 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 14 Jan 2013 16:52:56 +0100 Subject: USB: serial: grab disconnect mutex in chars_in_buffer Grab disconnect mutex in chars_in_buffer before checking disconnected flag or calling driver specific function. This allows subdrivers to query any hardware buffer status without having to handle the locking themselves. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb-serial.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 64bda135ba7e..0a17f5942552 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -361,15 +361,21 @@ static int serial_write_room(struct tty_struct *tty) static int serial_chars_in_buffer(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; + struct usb_serial *serial = port->serial; + int count = 0; dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number); + mutex_lock(&serial->disc_mutex); /* if the device was unplugged then any remaining characters fell out of the connector ;) */ - if (port->serial->disconnected) - return 0; - /* pass on to the driver specific version of this function */ - return port->serial->type->chars_in_buffer(tty); + if (serial->disconnected) + count = 0; + else + count = serial->type->chars_in_buffer(tty); + mutex_unlock(&serial->disc_mutex); + + return count; } static void serial_throttle(struct tty_struct *tty) -- cgit v1.2.3 From 263e1f9fbb999fb78df5bfed87ddbba1c12ee0f1 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 14 Jan 2013 16:52:57 +0100 Subject: USB: io_ti: query hardware-buffer status in chars_in_buffer Query hardware-buffer status in chars_in_buffer should the write fifo be empty. This is needed to make the tty layer wait for hardware buffers to drain on close. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_ti.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 3abbdaad838d..590f27d3bfc1 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -2088,6 +2088,7 @@ static int edge_chars_in_buffer(struct tty_struct *tty) struct edgeport_port *edge_port = usb_get_serial_port_data(port); int chars = 0; unsigned long flags; + int ret; if (edge_port == NULL) return 0; @@ -2098,6 +2099,12 @@ static int edge_chars_in_buffer(struct tty_struct *tty) chars = kfifo_len(&edge_port->write_fifo); spin_unlock_irqrestore(&edge_port->ep_lock, flags); + if (!chars) { + ret = tx_active(edge_port); + if (ret > 0) + chars = ret; + } + dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); return chars; } -- cgit v1.2.3 From f40d781554ef5413d70254e422bc59d6538333d2 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 14 Jan 2013 16:52:58 +0100 Subject: USB: io_ti: kill custom closing_wait implementation Kill custom closing_wait implementation and let the tty layer handle it instead. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_ti.c | 57 ++++++++-------------------------------------- 1 file changed, 9 insertions(+), 48 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 590f27d3bfc1..641ab3da2d83 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -521,47 +521,6 @@ exit_is_tx_active: return bytes_left; } -static void chase_port(struct edgeport_port *port, unsigned long timeout) -{ - struct tty_struct *tty = tty_port_tty_get(&port->port->port); - struct usb_serial *serial = port->port->serial; - wait_queue_t wait; - unsigned long flags; - - if (!timeout) - timeout = (HZ * EDGE_CLOSING_WAIT)/100; - - /* wait for data to drain from the buffer */ - spin_lock_irqsave(&port->ep_lock, flags); - init_waitqueue_entry(&wait, current); - add_wait_queue(&tty->write_wait, &wait); - for (;;) { - set_current_state(TASK_INTERRUPTIBLE); - if (kfifo_len(&port->write_fifo) == 0 - || timeout == 0 || signal_pending(current) - || serial->disconnected) - /* disconnect */ - break; - spin_unlock_irqrestore(&port->ep_lock, flags); - timeout = schedule_timeout(timeout); - spin_lock_irqsave(&port->ep_lock, flags); - } - set_current_state(TASK_RUNNING); - remove_wait_queue(&tty->write_wait, &wait); - spin_unlock_irqrestore(&port->ep_lock, flags); - tty_kref_put(tty); - - /* wait for data to drain from the device */ - timeout += jiffies; - while ((long)(jiffies - timeout) < 0 && !signal_pending(current) - && !serial->disconnected) { - /* not disconnected */ - if (!tx_active(port)) - break; - msleep(10); - } -} - static int choose_config(struct usb_device *dev) { /* @@ -1955,8 +1914,6 @@ static void edge_close(struct usb_serial_port *port) * this flag and dump add read data */ edge_port->close_pending = 1; - chase_port(edge_port, (HZ * closing_wait) / 100); - usb_kill_urb(port->read_urb); usb_kill_urb(port->write_urb); edge_port->ep_write_urb_in_use = 0; @@ -2092,8 +2049,6 @@ static int edge_chars_in_buffer(struct tty_struct *tty) if (edge_port == NULL) return 0; - if (edge_port->close_pending == 1) - return 0; spin_lock_irqsave(&edge_port->ep_lock, flags); chars = kfifo_len(&edge_port->write_fifo); @@ -2442,10 +2397,15 @@ static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *retinfo) { struct serial_struct tmp; + unsigned cwait; if (!retinfo) return -EFAULT; + cwait = edge_port->port->port.closing_wait; + if (cwait != ASYNC_CLOSING_WAIT_NONE) + cwait = jiffies_to_msecs(closing_wait) / 10; + memset(&tmp, 0, sizeof(tmp)); tmp.type = PORT_16550A; @@ -2456,7 +2416,7 @@ static int get_serial_info(struct edgeport_port *edge_port, tmp.xmit_fifo_size = edge_port->port->bulk_out_size; tmp.baud_base = 9600; tmp.close_delay = 5*HZ; - tmp.closing_wait = closing_wait; + tmp.closing_wait = cwait; if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) return -EFAULT; @@ -2511,8 +2471,7 @@ static void edge_break(struct tty_struct *tty, int break_state) int status; int bv = 0; /* Off */ - /* chase the port close */ - chase_port(edge_port, 0); + tty_wait_until_sent(tty, 0); if (break_state == -1) bv = 1; /* On */ @@ -2585,6 +2544,8 @@ static int edge_port_probe(struct usb_serial_port *port) return ret; } + port->port.closing_wait = msecs_to_jiffies(closing_wait * 10); + return 0; } -- cgit v1.2.3 From a29c408521b2b8969fead6aa3c7819800d6b473a Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 18 Jan 2013 10:41:38 +0300 Subject: USB: c67x00-ll-hpi.c: signedness bug in ll_recv_msg() The callers expect this function to return zero on success or -EIO if it times out. The type should be int instead of unsigned short. Signed-off-by: Dan Carpenter Acked-by: Peter Korsgaard Signed-off-by: Greg Kroah-Hartman --- drivers/usb/c67x00/c67x00-ll-hpi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/c67x00/c67x00-ll-hpi.c b/drivers/usb/c67x00/c67x00-ll-hpi.c index a9636f43bca2..3a1ca4dfc83a 100644 --- a/drivers/usb/c67x00/c67x00-ll-hpi.c +++ b/drivers/usb/c67x00/c67x00-ll-hpi.c @@ -237,7 +237,7 @@ void c67x00_ll_hpi_disable_sofeop(struct c67x00_sie *sie) /* -------------------------------------------------------------------------- */ /* Transactions */ -static inline u16 ll_recv_msg(struct c67x00_device *dev) +static inline int ll_recv_msg(struct c67x00_device *dev) { u16 res; -- cgit v1.2.3 From 6e30d7cba992d626c9d16b3873a7b90c700d0e95 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Fri, 11 Jan 2013 20:10:38 +0800 Subject: usb: Add driver/usb/core/(port.c,hub.h) files This patch is to create driver/usb/core/(port.c,hub.h) files and move usb port related code into port.c. Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/Makefile | 1 + drivers/usb/core/hub.c | 107 +--------------------------------------------- drivers/usb/core/hub.h | 97 +++++++++++++++++++++++++++++++++++++++++ drivers/usb/core/port.c | 66 ++++++++++++++++++++++++++++ 4 files changed, 165 insertions(+), 106 deletions(-) create mode 100644 drivers/usb/core/hub.h create mode 100644 drivers/usb/core/port.c (limited to 'drivers') diff --git a/drivers/usb/core/Makefile b/drivers/usb/core/Makefile index 26059b93dbf4..5e847ad2f58a 100644 --- a/drivers/usb/core/Makefile +++ b/drivers/usb/core/Makefile @@ -7,6 +7,7 @@ ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG usbcore-y := usb.o hub.o hcd.o urb.o message.o driver.o usbcore-y += config.o file.o buffer.o sysfs.o endpoint.o usbcore-y += devio.o notify.o generic.o quirks.o devices.o +usbcore-y += port.o usbcore-$(CONFIG_PCI) += hcd-pci.o usbcore-$(CONFIG_ACPI) += usb-acpi.o diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index dc6ebd1d88da..f6ff1302f343 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -30,7 +30,7 @@ #include #include -#include "usb.h" +#include "hub.h" /* if we are in debug mode, always announce new devices */ #ifdef DEBUG @@ -42,62 +42,6 @@ #define USB_VENDOR_GENESYS_LOGIC 0x05e3 #define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND 0x01 -struct usb_port { - struct usb_device *child; - struct device dev; - struct dev_state *port_owner; - enum usb_port_connect_type connect_type; -}; - -struct usb_hub { - struct device *intfdev; /* the "interface" device */ - struct usb_device *hdev; - struct kref kref; - struct urb *urb; /* for interrupt polling pipe */ - - /* buffer for urb ... with extra space in case of babble */ - char (*buffer)[8]; - union { - struct usb_hub_status hub; - struct usb_port_status port; - } *status; /* buffer for status reports */ - struct mutex status_mutex; /* for the status buffer */ - - int error; /* last reported error */ - int nerrors; /* track consecutive errors */ - - struct list_head event_list; /* hubs w/data or errs ready */ - unsigned long event_bits[1]; /* status change bitmask */ - unsigned long change_bits[1]; /* ports with logical connect - status change */ - unsigned long busy_bits[1]; /* ports being reset or - resumed */ - unsigned long removed_bits[1]; /* ports with a "removed" - device present */ - unsigned long wakeup_bits[1]; /* ports that have signaled - remote wakeup */ -#if USB_MAXCHILDREN > 31 /* 8*sizeof(unsigned long) - 1 */ -#error event_bits[] is too short! -#endif - - struct usb_hub_descriptor *descriptor; /* class descriptor */ - struct usb_tt tt; /* Transaction Translator */ - - unsigned mA_per_port; /* current for each child */ - - unsigned limited_power:1; - unsigned quiescing:1; - unsigned disconnected:1; - - unsigned quirk_check_port_auto_suspend:1; - - unsigned has_indicators:1; - u8 indicator[USB_MAXCHILDREN]; - struct delayed_work leds; - struct delayed_work init_work; - struct usb_port **ports; -}; - static inline int hub_is_superspeed(struct usb_device *hdev) { return (hdev->descriptor.bDeviceProtocol == USB_HUB_PR_SS); @@ -168,9 +112,6 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem); #define HUB_DEBOUNCE_STEP 25 #define HUB_DEBOUNCE_STABLE 100 -#define to_usb_port(_dev) \ - container_of(_dev, struct usb_port, dev) - static int usb_reset_and_verify_device(struct usb_device *udev); static inline char *portspeed(struct usb_hub *hub, int portstatus) @@ -1294,52 +1235,6 @@ static int hub_post_reset(struct usb_interface *intf) return 0; } -static void usb_port_device_release(struct device *dev) -{ - struct usb_port *port_dev = to_usb_port(dev); - - kfree(port_dev); -} - -static void usb_hub_remove_port_device(struct usb_hub *hub, - int port1) -{ - device_unregister(&hub->ports[port1 - 1]->dev); -} - -struct device_type usb_port_device_type = { - .name = "usb_port", - .release = usb_port_device_release, -}; - -static int usb_hub_create_port_device(struct usb_hub *hub, - int port1) -{ - struct usb_port *port_dev = NULL; - int retval; - - port_dev = kzalloc(sizeof(*port_dev), GFP_KERNEL); - if (!port_dev) { - retval = -ENOMEM; - goto exit; - } - - hub->ports[port1 - 1] = port_dev; - port_dev->dev.parent = hub->intfdev; - port_dev->dev.type = &usb_port_device_type; - dev_set_name(&port_dev->dev, "port%d", port1); - - retval = device_register(&port_dev->dev); - if (retval) - goto error_register; - return 0; - -error_register: - put_device(&port_dev->dev); -exit: - return retval; -} - static int hub_configure(struct usb_hub *hub, struct usb_endpoint_descriptor *endpoint) { diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h new file mode 100644 index 000000000000..d16a7c98aea9 --- /dev/null +++ b/drivers/usb/core/hub.h @@ -0,0 +1,97 @@ +/* + * usb hub driver head file + * + * Copyright (C) 1999 Linus Torvalds + * Copyright (C) 1999 Johannes Erdfelt + * Copyright (C) 1999 Gregory P. Smith + * Copyright (C) 2001 Brad Hards (bhards@bigpond.net.au) + * Copyright (C) 2012 Intel Corp (tianyu.lan@intel.com) + * + * move struct usb_hub to this file. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include +#include +#include +#include "usb.h" + +struct usb_hub { + struct device *intfdev; /* the "interface" device */ + struct usb_device *hdev; + struct kref kref; + struct urb *urb; /* for interrupt polling pipe */ + + /* buffer for urb ... with extra space in case of babble */ + char (*buffer)[8]; + union { + struct usb_hub_status hub; + struct usb_port_status port; + } *status; /* buffer for status reports */ + struct mutex status_mutex; /* for the status buffer */ + + int error; /* last reported error */ + int nerrors; /* track consecutive errors */ + + struct list_head event_list; /* hubs w/data or errs ready */ + unsigned long event_bits[1]; /* status change bitmask */ + unsigned long change_bits[1]; /* ports with logical connect + status change */ + unsigned long busy_bits[1]; /* ports being reset or + resumed */ + unsigned long removed_bits[1]; /* ports with a "removed" + device present */ + unsigned long wakeup_bits[1]; /* ports that have signaled + remote wakeup */ +#if USB_MAXCHILDREN > 31 /* 8*sizeof(unsigned long) - 1 */ +#error event_bits[] is too short! +#endif + + struct usb_hub_descriptor *descriptor; /* class descriptor */ + struct usb_tt tt; /* Transaction Translator */ + + unsigned mA_per_port; /* current for each child */ + + unsigned limited_power:1; + unsigned quiescing:1; + unsigned disconnected:1; + + unsigned quirk_check_port_auto_suspend:1; + + unsigned has_indicators:1; + u8 indicator[USB_MAXCHILDREN]; + struct delayed_work leds; + struct delayed_work init_work; + struct usb_port **ports; +}; + +/** + * struct usb port - kernel's representation of a usb port + * @child: usb device attatched to the port + * @dev: generic device interface + * @port_owner: port's owner + * @connect_type: port's connect type + */ +struct usb_port { + struct usb_device *child; + struct device dev; + struct dev_state *port_owner; + enum usb_port_connect_type connect_type; +}; + +#define to_usb_port(_dev) \ + container_of(_dev, struct usb_port, dev) + +extern int usb_hub_create_port_device(struct usb_hub *hub, + int port1); +extern void usb_hub_remove_port_device(struct usb_hub *hub, + int port1); + diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c new file mode 100644 index 000000000000..2bc1cef4e478 --- /dev/null +++ b/drivers/usb/core/port.c @@ -0,0 +1,66 @@ +/* + * usb port device code + * + * Copyright (C) 2012 Intel Corp + * + * Author: Lan Tianyu + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + */ + +#include "hub.h" + +static void usb_port_device_release(struct device *dev) +{ + struct usb_port *port_dev = to_usb_port(dev); + + kfree(port_dev); +} + +struct device_type usb_port_device_type = { + .name = "usb_port", + .release = usb_port_device_release, +}; + +int usb_hub_create_port_device(struct usb_hub *hub, int port1) +{ + struct usb_port *port_dev = NULL; + int retval; + + port_dev = kzalloc(sizeof(*port_dev), GFP_KERNEL); + if (!port_dev) { + retval = -ENOMEM; + goto exit; + } + + hub->ports[port1 - 1] = port_dev; + port_dev->dev.parent = hub->intfdev; + port_dev->dev.type = &usb_port_device_type; + dev_set_name(&port_dev->dev, "port%d", port1); + + retval = device_register(&port_dev->dev); + if (retval) + goto error_register; + + return 0; + +error_register: + put_device(&port_dev->dev); +exit: + return retval; +} + +void usb_hub_remove_port_device(struct usb_hub *hub, + int port1) +{ + device_unregister(&hub->ports[port1 - 1]->dev); +} + -- cgit v1.2.3 From 9f7344fbaf191de63df315c7e0fa4c976e2ea419 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Sat, 19 Jan 2013 22:30:19 +0800 Subject: usb: fix compilation error and warning of driver/usb/core/port.c on arm and blackfin This patch is to fix compilation error and warning on the arm and blackfin. Add linux/slab.h head file to driver/usb/core/port.c. These are reported from 0-DAY kernel build testing backend. head: 6e30d7cba992d626c9d16b3873a7b90c700d0e95 commit: 6e30d7cba992d626c9d16b3873a7b90c700d0e95 [26/26] usb: Add driver/usb/core/(port.c,hub.h) files config: make ARCH=arm at91_dt_defconfig All error/warnings: drivers/usb/core/port.c: In function 'usb_port_device_release': >> drivers/usb/core/port.c:25:2: error: implicit declaration of function 'kfree' [-Werror=implicit-function-declaration] drivers/usb/core/port.c: In function 'usb_hub_create_port_device': >> drivers/usb/core/port.c:38:2: error: implicit declaration of function 'kzalloc' [-Werror=implicit-function-declaration] >> drivers/usb/core/port.c:38:40: error: 'GFP_KERNEL' undeclared (first use in this function) drivers/usb/core/port.c:38:40: note: each undeclared identifier is reported only once for each function it appears in cc1: some warnings being treated as errors head: 6e30d7cba992d626c9d16b3873a7b90c700d0e95 commit: 6e30d7cba992d626c9d16b3873a7b90c700d0e95 [26/26] usb: Add driver/usb/core/(port.c,hub.h) files config: make ARCH=blackfin BF526-EZBRD_defconfig All warnings: drivers/usb/core/port.c: In function 'usb_port_device_release': drivers/usb/core/port.c:25:2: error: implicit declaration of function 'kfree' [-Werror=implicit-function-declaration] drivers/usb/core/port.c: In function 'usb_hub_create_port_device': drivers/usb/core/port.c:38:2: error: implicit declaration of function 'kzalloc' [-Werror=implicit-function-declaration] >> drivers/usb/core/port.c:38:11: warning: assignment makes pointer from integer without a cast [enabled by default] cc1: some warnings being treated as errors Reported-by: Fengguang Wu Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/port.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index 2bc1cef4e478..3734850120ae 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -16,6 +16,8 @@ * */ +#include + #include "hub.h" static void usb_port_device_release(struct device *dev) -- cgit v1.2.3 From cef7468caff29d3333fba4d0ececd82063ce80d5 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Sun, 20 Jan 2013 01:53:32 +0800 Subject: usb: Add "portX/connect_type" attribute to expose usb port's connect type Some platforms provide usb port connect types through ACPI. This patch is to add this new attribute to expose these information to user space. Acked-by: Alan Stern Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- Documentation/ABI/testing/sysfs-bus-usb | 9 +++++++ drivers/usb/core/port.c | 43 +++++++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+) (limited to 'drivers') diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index b6fbe514a869..c8baaf53594a 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb @@ -227,3 +227,12 @@ Contact: Lan Tianyu Description: The /sys/bus/usb/devices/.../(hub interface)/portX is usb port device's sysfs directory. + +What: /sys/bus/usb/devices/.../(hub interface)/portX/connect_type +Date: January 2013 +Contact: Lan Tianyu +Description: + Some platforms provide usb port connect types through ACPI. + This attribute is to expose these information to user space. + The file will read "hotplug", "wired" and "not used" if the + information is available, and "unknown" otherwise. diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index 3734850120ae..fe5959fc021b 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -20,6 +20,48 @@ #include "hub.h" +static const struct attribute_group *port_dev_group[]; + +static ssize_t show_port_connect_type(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct usb_port *port_dev = to_usb_port(dev); + char *result; + + switch (port_dev->connect_type) { + case USB_PORT_CONNECT_TYPE_HOT_PLUG: + result = "hotplug"; + break; + case USB_PORT_CONNECT_TYPE_HARD_WIRED: + result = "hardwired"; + break; + case USB_PORT_NOT_USED: + result = "not used"; + break; + default: + result = "unknown"; + break; + } + + return sprintf(buf, "%s\n", result); +} +static DEVICE_ATTR(connect_type, S_IRUGO, show_port_connect_type, + NULL); + +static struct attribute *port_dev_attrs[] = { + &dev_attr_connect_type.attr, + NULL, +}; + +static struct attribute_group port_dev_attr_grp = { + .attrs = port_dev_attrs, +}; + +static const struct attribute_group *port_dev_group[] = { + &port_dev_attr_grp, + NULL, +}; + static void usb_port_device_release(struct device *dev) { struct usb_port *port_dev = to_usb_port(dev); @@ -45,6 +87,7 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1) hub->ports[port1 - 1] = port_dev; port_dev->dev.parent = hub->intfdev; + port_dev->dev.groups = port_dev_group; port_dev->dev.type = &usb_port_device_type; dev_set_name(&port_dev->dev, "port%d", port1); -- cgit v1.2.3 From fde26380315d7d57816efc143b7924c82dba764d Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Sun, 20 Jan 2013 01:53:33 +0800 Subject: usb: Create link files between child device and usb port device. To show the relationship between usb port and child device, add link file "port" under usb device's sysfs directoy and "device" under usb port device's sysfs directory. They are linked to each other. Acked-by: Alan Stern Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index f6ff1302f343..cfdd4eecc5a9 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1989,6 +1989,14 @@ void usb_disconnect(struct usb_device **pdev) usb_disable_device(udev, 0); usb_hcd_synchronize_unlinks(udev); + if (udev->parent) { + struct usb_port *port_dev = + hdev_to_hub(udev->parent)->ports[udev->portnum - 1]; + + sysfs_remove_link(&udev->dev.kobj, "port"); + sysfs_remove_link(&port_dev->dev.kobj, "device"); + } + usb_remove_ep_devs(&udev->ep0); usb_unlock_device(udev); @@ -2281,6 +2289,24 @@ int usb_new_device(struct usb_device *udev) goto fail; } + /* Create link files between child device and usb port device. */ + if (udev->parent) { + struct usb_port *port_dev = + hdev_to_hub(udev->parent)->ports[udev->portnum - 1]; + + err = sysfs_create_link(&udev->dev.kobj, + &port_dev->dev.kobj, "port"); + if (err) + goto fail; + + err = sysfs_create_link(&port_dev->dev.kobj, + &udev->dev.kobj, "device"); + if (err) { + sysfs_remove_link(&udev->dev.kobj, "port"); + goto fail; + } + } + (void) usb_create_ep_devs(&udev->dev, &udev->ep0, udev); usb_mark_last_busy(udev); pm_runtime_put_sync_autosuspend(&udev->dev); -- cgit v1.2.3 From f4cc1834bdc47d0574ceffb728f256f67e1190ef Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Sat, 19 Jan 2013 19:30:30 +0800 Subject: USB: storage: avoid scanning other targets for single target device This patch sets scsi_host->max_id as 1 if the device's quirk flag of US_FL_SCM_MULT_TARG isn't set, because there are only 6 mass storage devices marked as mutiple targets from unusual_devs.h. This patch is a small optimization about scanning targets, and avoid scanning other 7 non-existed targets for single target device. Signed-off-by: Ming Lei Acked-by: Alan Stern Acked-by: Matthew Dharm Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/usb.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index 31b3e1a61bbd..07b3e5406f48 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -976,6 +976,9 @@ int usb_stor_probe2(struct us_data *us) if (us->fflags & US_FL_SINGLE_LUN) us->max_lun = 0; + if (!(us->fflags & US_FL_SCM_MULT_TARG)) + us_to_host(us)->max_id = 1; + /* Find the endpoints and calculate pipe values */ result = get_pipes(us); if (result) -- cgit v1.2.3 From 779d516ca91d796cb37bd0760282d08f90661ee2 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:09:55 +0100 Subject: usb: gadget: composite: don't call driver's unbind() if bind() failed Lets assume nokia_bind() starts with "return -EINVAL". After loading the gadget we end up with: |udc dummy_udc.0: registering UDC driver [g_nokia] |BUG: unable to handle kernel NULL pointer dereference at 00000040 |IP: [] __list_add+0x25/0xf0 |Call Trace: | [] rollback_registered+0x21/0x40 | [] unregister_netdevice_queue+0x4f/0xa0 | [] unregister_netdev+0x19/0x30 | [] gphonet_cleanup+0x32/0x50 [g_nokia] | [] nokia_unbind+0x1c/0x2a [g_nokia] | [] __composite_unbind.constprop.10+0x4f/0xb0 [libcomposite] | [] composite_bind+0x1ae/0x230 [libcomposite] | [] usb_gadget_probe_driver+0xc6/0x1b0 | [] usb_composite_probe+0x7a/0xa0 [libcomposite] That is crash from nokia_unbind() invoked via nokia_bind(). This crash will look different we if make it until usb_string_ids_tab() before we enter an error condition in the probe function. nokia_bind_config() tries to clean up which is IMHO the right thing to do. Leaving things as-is and hoping that its unbind() will clean it up is kinda backwards. Especially since the bind function never succeeded so it can't know how much it needs to clean up. This fixes the behaviour by not calling the driver's unbind function if its bind function failed. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 71475b6d8568..9db000013f5d 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1349,8 +1349,7 @@ static ssize_t composite_show_suspended(struct device *dev, static DEVICE_ATTR(suspended, 0444, composite_show_suspended, NULL); -static void -composite_unbind(struct usb_gadget *gadget) +static void __composite_unbind(struct usb_gadget *gadget, bool unbind_driver) { struct usb_composite_dev *cdev = get_gadget_data(gadget); @@ -1367,7 +1366,7 @@ composite_unbind(struct usb_gadget *gadget) struct usb_configuration, list); remove_config(cdev, c); } - if (cdev->driver->unbind) + if (cdev->driver->unbind && unbind_driver) cdev->driver->unbind(cdev); if (cdev->req) { @@ -1380,6 +1379,11 @@ composite_unbind(struct usb_gadget *gadget) set_gadget_data(gadget, NULL); } +static void composite_unbind(struct usb_gadget *gadget) +{ + __composite_unbind(gadget, true); +} + static void update_unchanged_dev_desc(struct usb_device_descriptor *new, const struct usb_device_descriptor *old) { @@ -1488,7 +1492,7 @@ static int composite_bind(struct usb_gadget *gadget, return 0; fail: - composite_unbind(gadget); + __composite_unbind(gadget, false); return status; } -- cgit v1.2.3 From 32b8666589d5c274cea0ea4b07e202422bf975b1 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:09:56 +0100 Subject: usb: gadget: remove u32 castings of address passed to readl() Removes a couple of: |drivers/usb/gadget/s3c-hsudc.c: In function 's3c_hsudc_epin_intr': |drivers/usb/gadget/s3c-hsudc.c:438:2: warning: passing argument 1 of '__raw_readl' makes pointer from integer without a cast |arch/arm/include/asm/io.h:104:19: note: expected 'const volatile void *' but argument is of type 'unsigned int' Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c-hsudc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c index d2b8791bba28..4a3d620e1f11 100644 --- a/drivers/usb/gadget/s3c-hsudc.c +++ b/drivers/usb/gadget/s3c-hsudc.c @@ -435,7 +435,7 @@ static void s3c_hsudc_epin_intr(struct s3c_hsudc *hsudc, u32 ep_idx) struct s3c_hsudc_req *hsreq; u32 csr; - csr = readl((u32)hsudc->regs + S3C_ESR); + csr = readl(hsudc->regs + S3C_ESR); if (csr & S3C_ESR_STALL) { writel(S3C_ESR_STALL, hsudc->regs + S3C_ESR); return; @@ -468,7 +468,7 @@ static void s3c_hsudc_epout_intr(struct s3c_hsudc *hsudc, u32 ep_idx) struct s3c_hsudc_req *hsreq; u32 csr; - csr = readl((u32)hsudc->regs + S3C_ESR); + csr = readl(hsudc->regs + S3C_ESR); if (csr & S3C_ESR_STALL) { writel(S3C_ESR_STALL, hsudc->regs + S3C_ESR); return; @@ -901,12 +901,12 @@ static int s3c_hsudc_queue(struct usb_ep *_ep, struct usb_request *_req, if (list_empty(&hsep->queue) && !hsep->stopped) { offset = (ep_index(hsep)) ? S3C_ESR : S3C_EP0SR; if (ep_is_in(hsep)) { - csr = readl((u32)hsudc->regs + offset); + csr = readl(hsudc->regs + offset); if (!(csr & S3C_ESR_TX_SUCCESS) && (s3c_hsudc_write_fifo(hsep, hsreq) == 1)) hsreq = NULL; } else { - csr = readl((u32)hsudc->regs + offset); + csr = readl(hsudc->regs + offset); if ((csr & S3C_ESR_RX_SUCCESS) && (s3c_hsudc_read_fifo(hsep, hsreq) == 1)) hsreq = NULL; -- cgit v1.2.3 From 544aca39e670421c2daae4b6706f1e405b19ba72 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:09:57 +0100 Subject: usb: gadget: provide a wrapper around SourceSink's setup function The setup request can be sent to an interface/endpoint or to the device itself. If it is sent to an interface / endpoint then we forward it to the function that is mapped to that interface / endpoint. If the device is the target of the setup request then we forward it to the ->setup() callback of the currently active configuration. In case of the sourcesink function the requests are function specific but are sent to the device. This patch introduces a setup wrapper at configuration level which forwards the request to the function. By using this wrapper we can keep the function specific code within the function file and we need just a hint at config level to forward the request. The here introduced global variable will be moved into the gadget (which combines the two functions) in a later patch. SourceSink is currently the only function using ->setup() at config level. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_sourcesink.c | 70 +++++++++++++++++++++++++-------------- 1 file changed, 45 insertions(+), 25 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c index de608864c6db..bac04b0c628e 100644 --- a/drivers/usb/gadget/f_sourcesink.c +++ b/drivers/usb/gadget/f_sourcesink.c @@ -449,11 +449,14 @@ no_iso: return 0; } +static struct usb_function *global_ss_func; + static void sourcesink_unbind(struct usb_configuration *c, struct usb_function *f) { usb_free_all_descriptors(f); kfree(func_to_ss(f)); + global_ss_func = NULL; } /* optionally require specific source/sink data patterns */ @@ -756,32 +759,10 @@ static void sourcesink_disable(struct usb_function *f) } /*-------------------------------------------------------------------------*/ - -static int __init sourcesink_bind_config(struct usb_configuration *c) -{ - struct f_sourcesink *ss; - int status; - - ss = kzalloc(sizeof *ss, GFP_KERNEL); - if (!ss) - return -ENOMEM; - - ss->function.name = "source/sink"; - ss->function.bind = sourcesink_bind; - ss->function.unbind = sourcesink_unbind; - ss->function.set_alt = sourcesink_set_alt; - ss->function.get_alt = sourcesink_get_alt; - ss->function.disable = sourcesink_disable; - - status = usb_add_function(c, &ss->function); - if (status) - kfree(ss); - return status; -} - -static int sourcesink_setup(struct usb_configuration *c, +static int sourcesink_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) { + struct usb_configuration *c = f->config; struct usb_request *req = c->cdev->req; int value = -EOPNOTSUPP; u16 w_index = le16_to_cpu(ctrl->wIndex); @@ -850,10 +831,49 @@ unknown: return value; } +static int __init sourcesink_bind_config(struct usb_configuration *c) +{ + struct f_sourcesink *ss; + int status; + + ss = kzalloc(sizeof(*ss), GFP_KERNEL); + if (!ss) + return -ENOMEM; + + global_ss_func = &ss->function; + + ss->function.name = "source/sink"; + ss->function.bind = sourcesink_bind; + ss->function.unbind = sourcesink_unbind; + ss->function.set_alt = sourcesink_set_alt; + ss->function.get_alt = sourcesink_get_alt; + ss->function.disable = sourcesink_disable; + ss->function.setup = sourcesink_setup; + + status = usb_add_function(c, &ss->function); + if (status) + kfree(ss); + return status; +} + +static int ss_config_setup(struct usb_configuration *c, + const struct usb_ctrlrequest *ctrl) +{ + if (!global_ss_func) + return -EOPNOTSUPP; + switch (ctrl->bRequest) { + case 0x5b: + case 0x5c: + return global_ss_func->setup(global_ss_func, ctrl); + default: + return -EOPNOTSUPP; + } +} + static struct usb_configuration sourcesink_driver = { .label = "source/sink", .strings = sourcesink_strings, - .setup = sourcesink_setup, + .setup = ss_config_setup, .bConfigurationValue = 3, .bmAttributes = USB_CONFIG_ATT_SELFPOWER, /* .iConfiguration = DYNAMIC */ -- cgit v1.2.3 From eeae54075ce3491968e9282cbb44f6a06b306b66 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:09:58 +0100 Subject: usb: gadget: move source sink's config descriptor out of f_sourcesink f_sourcesink should only include the bare function but it also includes the config descriptor. This patch moves the config descriptor into zero.c, the only user of this function. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_sourcesink.c | 48 +++++++-------------------------------- drivers/usb/gadget/g_zero.h | 1 - drivers/usb/gadget/zero.c | 31 +++++++++++++++++++++++-- 3 files changed, 37 insertions(+), 43 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c index bac04b0c628e..f785cbd59688 100644 --- a/drivers/usb/gadget/f_sourcesink.c +++ b/drivers/usb/gadget/f_sourcesink.c @@ -328,6 +328,14 @@ sourcesink_bind(struct usb_configuration *c, struct usb_function *f) source_sink_intf_alt0.bInterfaceNumber = id; source_sink_intf_alt1.bInterfaceNumber = id; + /* allocate string ID(s) */ + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_sourcesink[0].id = id; + source_sink_intf_alt0.iInterface = id; + source_sink_intf_alt1.iInterface = id; + /* allocate bulk endpoints */ ss->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_source_desc); if (!ss->in_ep) { @@ -869,43 +877,3 @@ static int ss_config_setup(struct usb_configuration *c, return -EOPNOTSUPP; } } - -static struct usb_configuration sourcesink_driver = { - .label = "source/sink", - .strings = sourcesink_strings, - .setup = ss_config_setup, - .bConfigurationValue = 3, - .bmAttributes = USB_CONFIG_ATT_SELFPOWER, - /* .iConfiguration = DYNAMIC */ -}; - -/** - * sourcesink_add - add a source/sink testing configuration to a device - * @cdev: the device to support the configuration - */ -int __init sourcesink_add(struct usb_composite_dev *cdev, bool autoresume) -{ - int id; - - /* allocate string ID(s) */ - id = usb_string_id(cdev); - if (id < 0) - return id; - strings_sourcesink[0].id = id; - - source_sink_intf_alt0.iInterface = id; - source_sink_intf_alt1.iInterface = id; - sourcesink_driver.iConfiguration = id; - - /* support autoresume for remote wakeup testing */ - if (autoresume) - sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - - /* support OTG systems */ - if (gadget_is_otg(cdev->gadget)) { - sourcesink_driver.descriptors = otg_desc; - sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - } - - return usb_add_config(cdev, &sourcesink_driver, sourcesink_bind_config); -} diff --git a/drivers/usb/gadget/g_zero.h b/drivers/usb/gadget/g_zero.h index 71ca193358b8..919eaa9ae124 100644 --- a/drivers/usb/gadget/g_zero.h +++ b/drivers/usb/gadget/g_zero.h @@ -20,7 +20,6 @@ void disable_endpoints(struct usb_composite_dev *cdev, struct usb_ep *iso_in, struct usb_ep *iso_out); /* configuration-specific linkup */ -int sourcesink_add(struct usb_composite_dev *cdev, bool autoresume); int loopback_add(struct usb_composite_dev *cdev, bool autoresume); #endif /* __G_ZERO_H */ diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c index 6bf4c0611365..ddf37cfdad97 100644 --- a/drivers/usb/gadget/zero.c +++ b/drivers/usb/gadget/zero.c @@ -139,10 +139,13 @@ const struct usb_descriptor_header *otg_desc[] = { /* default serial number takes at least two packets */ static char serial[] = "0123456789.0123456789.0123456789"; +#define USB_GZERO_SS_DESC (USB_GADGET_FIRST_AVAIL_IDX + 0) + static struct usb_string strings_dev[] = { [USB_GADGET_MANUFACTURER_IDX].s = "", [USB_GADGET_PRODUCT_IDX].s = longname, [USB_GADGET_SERIAL_IDX].s = serial, + [USB_GZERO_SS_DESC].s = "source and sink data", { } /* end of list */ }; @@ -251,6 +254,15 @@ static void zero_resume(struct usb_composite_dev *cdev) /*-------------------------------------------------------------------------*/ +static struct usb_configuration sourcesink_driver = { + .label = "source/sink", + .strings = sourcesink_strings, + .setup = ss_config_setup, + .bConfigurationValue = 3, + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + /* .iConfiguration = DYNAMIC */ +}; + static int __init zero_bind(struct usb_composite_dev *cdev) { int status; @@ -268,14 +280,29 @@ static int __init zero_bind(struct usb_composite_dev *cdev) setup_timer(&autoresume_timer, zero_autoresume, (unsigned long) cdev); + sourcesink_driver.iConfiguration = strings_dev[USB_GZERO_SS_DESC].id; + /* support autoresume for remote wakeup testing */ + sourcesink_driver.bmAttributes &= ~USB_CONFIG_ATT_WAKEUP; + sourcesink_driver.descriptors = NULL; + if (autoresume) + sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + + /* support OTG systems */ + if (gadget_is_otg(cdev->gadget)) { + sourcesink_driver.descriptors = otg_desc; + sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + /* Register primary, then secondary configuration. Note that * SH3 only allows one config... */ if (loopdefault) { loopback_add(cdev, autoresume != 0); - sourcesink_add(cdev, autoresume != 0); + usb_add_config(cdev, &sourcesink_driver, + sourcesink_bind_config); } else { - sourcesink_add(cdev, autoresume != 0); + usb_add_config(cdev, &sourcesink_driver, + sourcesink_bind_config); loopback_add(cdev, autoresume != 0); } -- cgit v1.2.3 From 78f46f09a80a39fe646fe415a21435f2a05df6c2 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:09:59 +0100 Subject: usb: gadget: move loopback's config descriptor out of f_loopback f_loopback should only include the bare function but it also includes the config descriptor. This patch moves the config descriptor into zero.c, the only user of this function. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_loopback.c | 44 ++++++----------------------------------- drivers/usb/gadget/g_zero.h | 3 --- drivers/usb/gadget/zero.c | 24 +++++++++++++++++++--- 3 files changed, 27 insertions(+), 44 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_loopback.c b/drivers/usb/gadget/f_loopback.c index bb39cb2bb3a3..3d103a2f998f 100644 --- a/drivers/usb/gadget/f_loopback.c +++ b/drivers/usb/gadget/f_loopback.c @@ -185,6 +185,12 @@ loopback_bind(struct usb_configuration *c, struct usb_function *f) return id; loopback_intf.bInterfaceNumber = id; + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_loopback[0].id = id; + loopback_intf.iInterface = id; + /* allocate endpoints */ loop->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_loop_source_desc); @@ -388,41 +394,3 @@ static int __init loopback_bind_config(struct usb_configuration *c) kfree(loop); return status; } - -static struct usb_configuration loopback_driver = { - .label = "loopback", - .strings = loopback_strings, - .bConfigurationValue = 2, - .bmAttributes = USB_CONFIG_ATT_SELFPOWER, - /* .iConfiguration = DYNAMIC */ -}; - -/** - * loopback_add - add a loopback testing configuration to a device - * @cdev: the device to support the loopback configuration - */ -int __init loopback_add(struct usb_composite_dev *cdev, bool autoresume) -{ - int id; - - /* allocate string ID(s) */ - id = usb_string_id(cdev); - if (id < 0) - return id; - strings_loopback[0].id = id; - - loopback_intf.iInterface = id; - loopback_driver.iConfiguration = id; - - /* support autoresume for remote wakeup testing */ - if (autoresume) - loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - - /* support OTG systems */ - if (gadget_is_otg(cdev->gadget)) { - loopback_driver.descriptors = otg_desc; - loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - } - - return usb_add_config(cdev, &loopback_driver, loopback_bind_config); -} diff --git a/drivers/usb/gadget/g_zero.h b/drivers/usb/gadget/g_zero.h index 919eaa9ae124..281239c4e544 100644 --- a/drivers/usb/gadget/g_zero.h +++ b/drivers/usb/gadget/g_zero.h @@ -19,7 +19,4 @@ void disable_endpoints(struct usb_composite_dev *cdev, struct usb_ep *in, struct usb_ep *out, struct usb_ep *iso_in, struct usb_ep *iso_out); -/* configuration-specific linkup */ -int loopback_add(struct usb_composite_dev *cdev, bool autoresume); - #endif /* __G_ZERO_H */ diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c index ddf37cfdad97..8ba0bee4e6c0 100644 --- a/drivers/usb/gadget/zero.c +++ b/drivers/usb/gadget/zero.c @@ -140,12 +140,14 @@ const struct usb_descriptor_header *otg_desc[] = { static char serial[] = "0123456789.0123456789.0123456789"; #define USB_GZERO_SS_DESC (USB_GADGET_FIRST_AVAIL_IDX + 0) +#define USB_GZERO_LB_DESC (USB_GADGET_FIRST_AVAIL_IDX + 1) static struct usb_string strings_dev[] = { [USB_GADGET_MANUFACTURER_IDX].s = "", [USB_GADGET_PRODUCT_IDX].s = longname, [USB_GADGET_SERIAL_IDX].s = serial, [USB_GZERO_SS_DESC].s = "source and sink data", + [USB_GZERO_LB_DESC].s = "loop input to output", { } /* end of list */ }; @@ -254,6 +256,14 @@ static void zero_resume(struct usb_composite_dev *cdev) /*-------------------------------------------------------------------------*/ +static struct usb_configuration loopback_driver = { + .label = "loopback", + .strings = loopback_strings, + .bConfigurationValue = 2, + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + /* .iConfiguration = DYNAMIC */ +}; + static struct usb_configuration sourcesink_driver = { .label = "source/sink", .strings = sourcesink_strings, @@ -281,29 +291,37 @@ static int __init zero_bind(struct usb_composite_dev *cdev) setup_timer(&autoresume_timer, zero_autoresume, (unsigned long) cdev); sourcesink_driver.iConfiguration = strings_dev[USB_GZERO_SS_DESC].id; + loopback_driver.iConfiguration = strings_dev[USB_GZERO_LB_DESC].id; + /* support autoresume for remote wakeup testing */ sourcesink_driver.bmAttributes &= ~USB_CONFIG_ATT_WAKEUP; + loopback_driver.bmAttributes &= ~USB_CONFIG_ATT_WAKEUP; sourcesink_driver.descriptors = NULL; - if (autoresume) + loopback_driver.descriptors = NULL; + if (autoresume) { sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } /* support OTG systems */ if (gadget_is_otg(cdev->gadget)) { sourcesink_driver.descriptors = otg_desc; sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + loopback_driver.descriptors = otg_desc; + loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; } /* Register primary, then secondary configuration. Note that * SH3 only allows one config... */ if (loopdefault) { - loopback_add(cdev, autoresume != 0); + usb_add_config(cdev, &loopback_driver, loopback_bind_config); usb_add_config(cdev, &sourcesink_driver, sourcesink_bind_config); } else { usb_add_config(cdev, &sourcesink_driver, sourcesink_bind_config); - loopback_add(cdev, autoresume != 0); + usb_add_config(cdev, &loopback_driver, loopback_bind_config); } usb_composite_overwrite_options(cdev, &coverwrite); -- cgit v1.2.3 From de53c25447117eae6b3f8952f663f08a09e0dbb7 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:00 +0100 Subject: usb: gadget: add some infracture to register/unregister functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch provides an infrastructure to register & unregister a USB function. This allows to turn a function into a module and avoid the '#include "f_.*.c"' magic and we get a clear API / cut between the bare gadget and its functions. The concept is simple: Each function defines the DECLARE_USB_FUNCTION_INIT macro whith an unique name of the function and two allocation functions. - one to create an "instance". The instance holds the current configuration set. In case there are two usb_configudations with one function there will be one instance and two usb_functions - one to create an "function" from the instance. The name of the instance is used to automaticaly load the module if it the instance is not yet available. The usb_function callbacks are slightly modified and extended: - usb_get_function() creates a struct usb_function inclunding all pointers (bind, unbind,…). It uses the "instance" to map its configuration. So we can have _two_ struct usb_function, one for each usb_configuration. - ->unbind() Since the struct usb_function was not allocated in ->bind() it should not kfree()d here. This function should only reverse what happens in ->bind() that is request cleanup and the cleanup of allocated descriptors. - ->free_func() a simple kfree() of the struct usb_function Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/Makefile | 2 +- drivers/usb/gadget/composite.c | 47 ++++++++++++++++++++++++-------------- include/linux/usb/composite.h | 52 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 83 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 8b4acfd92aa3..fef41f5d6e8d 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -6,7 +6,7 @@ ccflags-$(CONFIG_USB_GADGET_DEBUG) := -DDEBUG obj-$(CONFIG_USB_GADGET) += udc-core.o obj-$(CONFIG_USB_LIBCOMPOSITE) += libcomposite.o libcomposite-y := usbstring.o config.o epautoconf.o -libcomposite-y += composite.o +libcomposite-y += composite.o functions.o obj-$(CONFIG_USB_DUMMY_HCD) += dummy_hcd.o obj-$(CONFIG_USB_NET2272) += net2272.o obj-$(CONFIG_USB_NET2280) += net2280.o diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 9db000013f5d..4aa0e4652228 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -683,6 +683,31 @@ done: return result; } +int usb_add_config_only(struct usb_composite_dev *cdev, + struct usb_configuration *config) +{ + struct usb_configuration *c; + + if (!config->bConfigurationValue) + return -EINVAL; + + /* Prevent duplicate configuration identifiers */ + list_for_each_entry(c, &cdev->configs, list) { + if (c->bConfigurationValue == config->bConfigurationValue) + return -EBUSY; + } + + config->cdev = cdev; + list_add_tail(&config->list, &cdev->configs); + + INIT_LIST_HEAD(&config->functions); + config->next_interface_id = 0; + memset(config->interface, 0, sizeof(config->interface)); + + return 0; +} +EXPORT_SYMBOL_GPL(usb_add_config_only); + /** * usb_add_config() - add a configuration to a device. * @cdev: wraps the USB gadget @@ -703,30 +728,18 @@ int usb_add_config(struct usb_composite_dev *cdev, int (*bind)(struct usb_configuration *)) { int status = -EINVAL; - struct usb_configuration *c; + + if (!bind) + goto done; DBG(cdev, "adding config #%u '%s'/%p\n", config->bConfigurationValue, config->label, config); - if (!config->bConfigurationValue || !bind) + status = usb_add_config_only(cdev, config); + if (status) goto done; - /* Prevent duplicate configuration identifiers */ - list_for_each_entry(c, &cdev->configs, list) { - if (c->bConfigurationValue == config->bConfigurationValue) { - status = -EBUSY; - goto done; - } - } - - config->cdev = cdev; - list_add_tail(&config->list, &cdev->configs); - - INIT_LIST_HEAD(&config->functions); - config->next_interface_id = 0; - memset(config->interface, 0, sizeof(config->interface)); - status = bind(config); if (status < 0) { while (!list_empty(&config->functions)) { diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index dc512c9432d7..3834e3330b23 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -77,6 +77,8 @@ struct usb_configuration; * in interface or class descriptors; endpoints; I/O buffers; and so on. * @unbind: Reverses @bind; called as a side effect of unregistering the * driver which added this function. + * @free_func: free the struct usb_function. + * @mod: (internal) points to the module that created this structure. * @set_alt: (REQUIRED) Reconfigures altsettings; function drivers may * initialize usb_ep.driver data at this time (when it is used). * Note that setting an interface to its current altsetting resets @@ -116,6 +118,7 @@ struct usb_configuration; * two or more distinct instances within the same configuration, providing * several independent logical data links to a USB host. */ + struct usb_function { const char *name; struct usb_gadget_strings **strings; @@ -136,6 +139,8 @@ struct usb_function { struct usb_function *); void (*unbind)(struct usb_configuration *, struct usb_function *); + void (*free_func)(struct usb_function *f); + struct module *mod; /* runtime state management */ int (*set_alt)(struct usb_function *, @@ -432,6 +437,53 @@ static inline u16 get_default_bcdDevice(void) return bcdDevice; } +struct usb_function_driver { + const char *name; + struct module *mod; + struct list_head list; + struct usb_function_instance *(*alloc_inst)(void); + struct usb_function *(*alloc_func)(struct usb_function_instance *inst); +}; + +struct usb_function_instance { + struct usb_function_driver *fd; + void (*free_func_inst)(struct usb_function_instance *inst); +}; + +void usb_function_unregister(struct usb_function_driver *f); +int usb_function_register(struct usb_function_driver *newf); +void usb_put_function_instance(struct usb_function_instance *fi); +void usb_put_function(struct usb_function *f); +struct usb_function_instance *usb_get_function_instance(const char *name); +struct usb_function *usb_get_function(struct usb_function_instance *fi); + +struct usb_configuration *usb_get_config(struct usb_composite_dev *cdev, + int val); +int usb_add_config_only(struct usb_composite_dev *cdev, + struct usb_configuration *config); + +#define DECLARE_USB_FUNCTION(_name, _inst_alloc, _func_alloc) \ + static struct usb_function_driver _name ## usb_func = { \ + .name = __stringify(_name), \ + .mod = THIS_MODULE, \ + .alloc_inst = _inst_alloc, \ + .alloc_func = _func_alloc, \ + }; \ + MODULE_ALIAS("usbfunc:"__stringify(_name)); + +#define DECLARE_USB_FUNCTION_INIT(_name, _inst_alloc, _func_alloc) \ + DECLARE_USB_FUNCTION(_name, _inst_alloc, _func_alloc) \ + static int __init _name ## mod_init(void) \ + { \ + return usb_function_register(&_name ## usb_func); \ + } \ + static void __exit _name ## mod_exit(void) \ + { \ + usb_function_unregister(&_name ## usb_func); \ + } \ + module_init(_name ## mod_init); \ + module_exit(_name ## mod_exit) + /* messaging utils */ #define DBG(d, fmt, args...) \ dev_dbg(&(d)->gadget->dev , fmt , ## args) -- cgit v1.2.3 From cf9a08ae5aece88987bbeee8eb0dd0ebb5015815 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:01 +0100 Subject: usb: gadget: convert source sink and loopback to new function interface This patch converts the f_sourcesink and f_loopback file to the USB-function module. Both functions shares a few common utility functions which are currently implemented in g_zero.c itself. This patch moves the common code into the sourcesink file and creates one module out of the the two functions (source sink and loop back). The g_zero gadget is function specific to source sink and loop back to set a few options. This Symbol dependency enforces a modul load right now. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/Kconfig | 4 + drivers/usb/gadget/Makefile | 4 + drivers/usb/gadget/f_loopback.c | 75 +++++++++++---- drivers/usb/gadget/f_sourcesink.c | 165 ++++++++++++++++++++++---------- drivers/usb/gadget/g_zero.h | 31 +++++- drivers/usb/gadget/zero.c | 196 ++++++++++++++++++++++---------------- 6 files changed, 321 insertions(+), 154 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 14625fd2cecd..0ef5549b6544 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -500,6 +500,9 @@ config USB_LIBCOMPOSITE tristate depends on USB_GADGET +config USB_F_SS_LB + tristate + choice tristate "USB Gadget Drivers" default USB_ETH @@ -524,6 +527,7 @@ choice config USB_ZERO tristate "Gadget Zero (DEVELOPMENT)" select USB_LIBCOMPOSITE + select USB_F_SS_LB help Gadget Zero is a two-configuration device. It either sinks and sources bulk data; or it loops back a configurable number of diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index fef41f5d6e8d..e412befa7a35 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -74,3 +74,7 @@ obj-$(CONFIG_USB_G_WEBCAM) += g_webcam.o obj-$(CONFIG_USB_G_NCM) += g_ncm.o obj-$(CONFIG_USB_G_ACM_MS) += g_acm_ms.o obj-$(CONFIG_USB_GADGET_TARGET) += tcm_usb_gadget.o + +# USB Functions +f_ss_lb-y := f_loopback.o f_sourcesink.o +obj-$(CONFIG_USB_F_SS_LB) += f_ss_lb.o diff --git a/drivers/usb/gadget/f_loopback.c b/drivers/usb/gadget/f_loopback.c index 3d103a2f998f..4a3873a0f2d0 100644 --- a/drivers/usb/gadget/f_loopback.c +++ b/drivers/usb/gadget/f_loopback.c @@ -15,10 +15,11 @@ #include #include #include +#include +#include +#include #include "g_zero.h" -#include "gadget_chips.h" - /* * LOOPBACK FUNCTION ... a testing vehicle for USB peripherals, @@ -44,9 +45,8 @@ static inline struct f_loopback *func_to_loop(struct usb_function *f) return container_of(f, struct f_loopback, function); } -static unsigned qlen = 32; -module_param(qlen, uint, 0); -MODULE_PARM_DESC(qlenn, "depth of loopback queue"); +static unsigned qlen; +static unsigned buflen; /*-------------------------------------------------------------------------*/ @@ -171,8 +171,7 @@ static struct usb_gadget_strings *loopback_strings[] = { /*-------------------------------------------------------------------------*/ -static int __init -loopback_bind(struct usb_configuration *c, struct usb_function *f) +static int loopback_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_loopback *loop = func_to_loop(f); @@ -229,8 +228,7 @@ autoconf_fail: return 0; } -static void -loopback_unbind(struct usb_configuration *c, struct usb_function *f) +static void lb_free_func(struct usb_function *f) { usb_free_all_descriptors(f); kfree(func_to_loop(f)); @@ -372,25 +370,64 @@ static void loopback_disable(struct usb_function *f) disable_loopback(loop); } -/*-------------------------------------------------------------------------*/ - -static int __init loopback_bind_config(struct usb_configuration *c) +static struct usb_function *loopback_alloc(struct usb_function_instance *fi) { struct f_loopback *loop; - int status; + struct f_lb_opts *lb_opts; loop = kzalloc(sizeof *loop, GFP_KERNEL); if (!loop) - return -ENOMEM; + return ERR_PTR(-ENOMEM); + + lb_opts = container_of(fi, struct f_lb_opts, func_inst); + buflen = lb_opts->bulk_buflen; + qlen = lb_opts->qlen; + if (!qlen) + qlen = 32; loop->function.name = "loopback"; loop->function.bind = loopback_bind; - loop->function.unbind = loopback_unbind; loop->function.set_alt = loopback_set_alt; loop->function.disable = loopback_disable; + loop->function.strings = loopback_strings; + + loop->function.free_func = lb_free_func; + + return &loop->function; +} + +static void lb_free_instance(struct usb_function_instance *fi) +{ + struct f_lb_opts *lb_opts; - status = usb_add_function(c, &loop->function); - if (status) - kfree(loop); - return status; + lb_opts = container_of(fi, struct f_lb_opts, func_inst); + kfree(lb_opts); } + +static struct usb_function_instance *loopback_alloc_instance(void) +{ + struct f_lb_opts *lb_opts; + + lb_opts = kzalloc(sizeof(*lb_opts), GFP_KERNEL); + if (!lb_opts) + return ERR_PTR(-ENOMEM); + lb_opts->func_inst.free_func_inst = lb_free_instance; + return &lb_opts->func_inst; +} +DECLARE_USB_FUNCTION(Loopback, loopback_alloc_instance, loopback_alloc); + +int __init lb_modinit(void) +{ + int ret; + + ret = usb_function_register(&Loopbackusb_func); + if (ret) + return ret; + return ret; +} +void __exit lb_modexit(void) +{ + usb_function_unregister(&Loopbackusb_func); +} + +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c index f785cbd59688..41adf3ef96c2 100644 --- a/drivers/usb/gadget/f_sourcesink.c +++ b/drivers/usb/gadget/f_sourcesink.c @@ -16,11 +16,12 @@ #include #include #include +#include +#include #include "g_zero.h" #include "gadget_chips.h" - /* * SOURCE/SINK FUNCTION ... a primary testing vehicle for USB peripheral * controller drivers. @@ -62,24 +63,11 @@ static inline struct f_sourcesink *func_to_ss(struct usb_function *f) } static unsigned pattern; -module_param(pattern, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(pattern, "0 = all zeroes, 1 = mod63, 2 = none"); - -static unsigned isoc_interval = 4; -module_param(isoc_interval, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(isoc_interval, "1 - 16"); - -static unsigned isoc_maxpacket = 1024; -module_param(isoc_maxpacket, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(isoc_maxpacket, "0 - 1023 (fs), 0 - 1024 (hs/ss)"); - +static unsigned isoc_interval; +static unsigned isoc_maxpacket; static unsigned isoc_mult; -module_param(isoc_mult, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(isoc_mult, "0 - 2 (hs/ss only)"); - static unsigned isoc_maxburst; -module_param(isoc_maxburst, uint, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(isoc_maxburst, "0 - 15 (ss only)"); +static unsigned buflen; /*-------------------------------------------------------------------------*/ @@ -313,7 +301,57 @@ static struct usb_gadget_strings *sourcesink_strings[] = { /*-------------------------------------------------------------------------*/ -static int __init +struct usb_request *alloc_ep_req(struct usb_ep *ep, int len) +{ + struct usb_request *req; + + req = usb_ep_alloc_request(ep, GFP_ATOMIC); + if (req) { + if (len) + req->length = len; + else + req->length = buflen; + req->buf = kmalloc(req->length, GFP_ATOMIC); + if (!req->buf) { + usb_ep_free_request(ep, req); + req = NULL; + } + } + return req; +} + +void free_ep_req(struct usb_ep *ep, struct usb_request *req) +{ + kfree(req->buf); + usb_ep_free_request(ep, req); +} + +static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep) +{ + int value; + + if (ep->driver_data) { + value = usb_ep_disable(ep); + if (value < 0) + DBG(cdev, "disable %s --> %d\n", + ep->name, value); + ep->driver_data = NULL; + } +} + +void disable_endpoints(struct usb_composite_dev *cdev, + struct usb_ep *in, struct usb_ep *out, + struct usb_ep *iso_in, struct usb_ep *iso_out) +{ + disable_ep(cdev, in); + disable_ep(cdev, out); + if (iso_in) + disable_ep(cdev, iso_in); + if (iso_out) + disable_ep(cdev, iso_out); +} + +static int sourcesink_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; @@ -328,14 +366,6 @@ sourcesink_bind(struct usb_configuration *c, struct usb_function *f) source_sink_intf_alt0.bInterfaceNumber = id; source_sink_intf_alt1.bInterfaceNumber = id; - /* allocate string ID(s) */ - id = usb_string_id(cdev); - if (id < 0) - return id; - strings_sourcesink[0].id = id; - source_sink_intf_alt0.iInterface = id; - source_sink_intf_alt1.iInterface = id; - /* allocate bulk endpoints */ ss->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_source_desc); if (!ss->in_ep) { @@ -457,14 +487,11 @@ no_iso: return 0; } -static struct usb_function *global_ss_func; - static void -sourcesink_unbind(struct usb_configuration *c, struct usb_function *f) +sourcesink_free_func(struct usb_function *f) { usb_free_all_descriptors(f); kfree(func_to_ss(f)); - global_ss_func = NULL; } /* optionally require specific source/sink data patterns */ @@ -767,6 +794,7 @@ static void sourcesink_disable(struct usb_function *f) } /*-------------------------------------------------------------------------*/ + static int sourcesink_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) { @@ -839,41 +867,76 @@ unknown: return value; } -static int __init sourcesink_bind_config(struct usb_configuration *c) +static struct usb_function *source_sink_alloc_func( + struct usb_function_instance *fi) { - struct f_sourcesink *ss; - int status; + struct f_sourcesink *ss; + struct f_ss_opts *ss_opts; ss = kzalloc(sizeof(*ss), GFP_KERNEL); if (!ss) - return -ENOMEM; + return NULL; - global_ss_func = &ss->function; + ss_opts = container_of(fi, struct f_ss_opts, func_inst); + pattern = ss_opts->pattern; + isoc_interval = ss_opts->isoc_interval; + isoc_maxpacket = ss_opts->isoc_maxpacket; + isoc_mult = ss_opts->isoc_mult; + isoc_maxburst = ss_opts->isoc_maxburst; + buflen = ss_opts->bulk_buflen; ss->function.name = "source/sink"; ss->function.bind = sourcesink_bind; - ss->function.unbind = sourcesink_unbind; ss->function.set_alt = sourcesink_set_alt; ss->function.get_alt = sourcesink_get_alt; ss->function.disable = sourcesink_disable; ss->function.setup = sourcesink_setup; + ss->function.strings = sourcesink_strings; - status = usb_add_function(c, &ss->function); - if (status) - kfree(ss); - return status; + ss->function.free_func = sourcesink_free_func; + + return &ss->function; } -static int ss_config_setup(struct usb_configuration *c, - const struct usb_ctrlrequest *ctrl) +static void acm_free_instance(struct usb_function_instance *fi) { - if (!global_ss_func) - return -EOPNOTSUPP; - switch (ctrl->bRequest) { - case 0x5b: - case 0x5c: - return global_ss_func->setup(global_ss_func, ctrl); - default: - return -EOPNOTSUPP; - } + struct f_ss_opts *ss_opts; + + ss_opts = container_of(fi, struct f_ss_opts, func_inst); + kfree(ss_opts); } + +static struct usb_function_instance *source_sink_alloc_inst(void) +{ + struct f_ss_opts *ss_opts; + + ss_opts = kzalloc(sizeof(*ss_opts), GFP_KERNEL); + if (!ss_opts) + return ERR_PTR(-ENOMEM); + ss_opts->func_inst.free_func_inst = acm_free_instance; + return &ss_opts->func_inst; +} +DECLARE_USB_FUNCTION(SourceSink, source_sink_alloc_inst, + source_sink_alloc_func); + +static int __init sslb_modinit(void) +{ + int ret; + + ret = usb_function_register(&SourceSinkusb_func); + if (ret) + return ret; + ret = lb_modinit(); + if (ret) + usb_function_unregister(&SourceSinkusb_func); + return ret; +} +static void __exit sslb_modexit(void) +{ + usb_function_unregister(&SourceSinkusb_func); + lb_modexit(); +} +module_init(sslb_modinit); +module_exit(sslb_modexit); + +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/g_zero.h b/drivers/usb/gadget/g_zero.h index 281239c4e544..ef3e8515272b 100644 --- a/drivers/usb/gadget/g_zero.h +++ b/drivers/usb/gadget/g_zero.h @@ -6,11 +6,34 @@ #ifndef __G_ZERO_H #define __G_ZERO_H -#include +struct usb_zero_options { + unsigned pattern; + unsigned isoc_interval; + unsigned isoc_maxpacket; + unsigned isoc_mult; + unsigned isoc_maxburst; + unsigned bulk_buflen; + unsigned qlen; +}; -/* global state */ -extern unsigned buflen; -extern const struct usb_descriptor_header *otg_desc[]; +struct f_ss_opts { + struct usb_function_instance func_inst; + unsigned pattern; + unsigned isoc_interval; + unsigned isoc_maxpacket; + unsigned isoc_mult; + unsigned isoc_maxburst; + unsigned bulk_buflen; +}; + +struct f_lb_opts { + struct usb_function_instance func_inst; + unsigned bulk_buflen; + unsigned qlen; +}; + +void lb_modexit(void); +int lb_modinit(void); /* common utilities */ struct usb_request *alloc_ep_req(struct usb_ep *ep, int len); diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c index 8ba0bee4e6c0..a331ab13f1e5 100644 --- a/drivers/usb/gadget/zero.c +++ b/drivers/usb/gadget/zero.c @@ -10,7 +10,6 @@ * (at your option) any later version. */ - /* * Gadget Zero only needs two bulk endpoints, and is an example of how you * can write a hardware-agnostic gadget driver running inside a USB device. @@ -43,23 +42,11 @@ #include #include #include +#include +#include +#include #include "g_zero.h" -#include "gadget_chips.h" - - -/*-------------------------------------------------------------------------*/ - -/* - * Kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ -#include "f_sourcesink.c" -#include "f_loopback.c" - /*-------------------------------------------------------------------------*/ USB_GADGET_COMPOSITE_OPTIONS(); @@ -67,9 +54,6 @@ USB_GADGET_COMPOSITE_OPTIONS(); static const char longname[] = "Gadget Zero"; -unsigned buflen = 4096; /* only used for bulk endpoints */ -module_param(buflen, uint, 0); - /* * Normally the "loopback" configuration is second (index 1) so * it's not the default. Here's where to change that order, to @@ -79,6 +63,13 @@ module_param(buflen, uint, 0); static bool loopdefault = 0; module_param(loopdefault, bool, S_IRUGO|S_IWUSR); +struct usb_zero_options gzero_options = { + .isoc_interval = 4, + .isoc_maxpacket = 1024, + .bulk_buflen = 4096, + .qlen = 32, +}; + /*-------------------------------------------------------------------------*/ /* Thanks to NetChip Technologies for donating this product ID. @@ -129,10 +120,12 @@ static struct usb_otg_descriptor otg_descriptor = { .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, }; -const struct usb_descriptor_header *otg_desc[] = { +static const struct usb_descriptor_header *otg_desc[] = { (struct usb_descriptor_header *) &otg_descriptor, NULL, }; +#else +#define otg_desc NULL #endif /* string IDs are assigned dynamically */ @@ -163,58 +156,6 @@ static struct usb_gadget_strings *dev_strings[] = { /*-------------------------------------------------------------------------*/ -struct usb_request *alloc_ep_req(struct usb_ep *ep, int len) -{ - struct usb_request *req; - - req = usb_ep_alloc_request(ep, GFP_ATOMIC); - if (req) { - if (len) - req->length = len; - else - req->length = buflen; - req->buf = kmalloc(req->length, GFP_ATOMIC); - if (!req->buf) { - usb_ep_free_request(ep, req); - req = NULL; - } - } - return req; -} - -void free_ep_req(struct usb_ep *ep, struct usb_request *req) -{ - kfree(req->buf); - usb_ep_free_request(ep, req); -} - -static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep) -{ - int value; - - if (ep->driver_data) { - value = usb_ep_disable(ep); - if (value < 0) - DBG(cdev, "disable %s --> %d\n", - ep->name, value); - ep->driver_data = NULL; - } -} - -void disable_endpoints(struct usb_composite_dev *cdev, - struct usb_ep *in, struct usb_ep *out, - struct usb_ep *iso_in, struct usb_ep *iso_out) -{ - disable_ep(cdev, in); - disable_ep(cdev, out); - if (iso_in) - disable_ep(cdev, iso_in); - if (iso_out) - disable_ep(cdev, iso_out); -} - -/*-------------------------------------------------------------------------*/ - static struct timer_list autoresume_timer; static void zero_autoresume(unsigned long _c) @@ -258,23 +199,63 @@ static void zero_resume(struct usb_composite_dev *cdev) static struct usb_configuration loopback_driver = { .label = "loopback", - .strings = loopback_strings, .bConfigurationValue = 2, .bmAttributes = USB_CONFIG_ATT_SELFPOWER, /* .iConfiguration = DYNAMIC */ }; +static struct usb_function *func_ss; +static struct usb_function_instance *func_inst_ss; + +static int ss_config_setup(struct usb_configuration *c, + const struct usb_ctrlrequest *ctrl) +{ + switch (ctrl->bRequest) { + case 0x5b: + case 0x5c: + return func_ss->setup(func_ss, ctrl); + default: + return -EOPNOTSUPP; + } +} + static struct usb_configuration sourcesink_driver = { .label = "source/sink", - .strings = sourcesink_strings, .setup = ss_config_setup, .bConfigurationValue = 3, .bmAttributes = USB_CONFIG_ATT_SELFPOWER, /* .iConfiguration = DYNAMIC */ }; +module_param_named(buflen, gzero_options.bulk_buflen, uint, 0); +module_param_named(pattern, gzero_options.pattern, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(pattern, "0 = all zeroes, 1 = mod63, 2 = none"); + +module_param_named(isoc_interval, gzero_options.isoc_interval, uint, + S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_interval, "1 - 16"); + +module_param_named(isoc_maxpacket, gzero_options.isoc_maxpacket, uint, + S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_maxpacket, "0 - 1023 (fs), 0 - 1024 (hs/ss)"); + +module_param_named(isoc_mult, gzero_options.isoc_mult, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_mult, "0 - 2 (hs/ss only)"); + +module_param_named(isoc_maxburst, gzero_options.isoc_maxburst, uint, + S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(isoc_maxburst, "0 - 15 (ss only)"); + +static struct usb_function *func_lb; +static struct usb_function_instance *func_inst_lb; + +module_param_named(qlen, gzero_options.qlen, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(qlen, "depth of loopback queue"); + static int __init zero_bind(struct usb_composite_dev *cdev) { + struct f_ss_opts *ss_opts; + struct f_lb_opts *lb_opts; int status; /* Allocate string descriptor numbers ... note that string @@ -290,6 +271,36 @@ static int __init zero_bind(struct usb_composite_dev *cdev) setup_timer(&autoresume_timer, zero_autoresume, (unsigned long) cdev); + func_inst_ss = usb_get_function_instance("SourceSink"); + if (IS_ERR(func_inst_ss)) + return PTR_ERR(func_inst_ss); + + ss_opts = container_of(func_inst_ss, struct f_ss_opts, func_inst); + ss_opts->pattern = gzero_options.pattern; + ss_opts->isoc_interval = gzero_options.isoc_interval; + ss_opts->isoc_maxpacket = gzero_options.isoc_maxpacket; + ss_opts->isoc_mult = gzero_options.isoc_mult; + ss_opts->isoc_maxburst = gzero_options.isoc_maxpacket; + ss_opts->bulk_buflen = gzero_options.bulk_buflen; + + func_ss = usb_get_function(func_inst_ss); + if (IS_ERR(func_ss)) + goto err_put_func_inst_ss; + + func_inst_lb = usb_get_function_instance("Loopback"); + if (IS_ERR(func_inst_lb)) + goto err_put_func_ss; + + lb_opts = container_of(func_inst_lb, struct f_lb_opts, func_inst); + lb_opts->bulk_buflen = gzero_options.bulk_buflen; + lb_opts->qlen = gzero_options.qlen; + + func_lb = usb_get_function(func_inst_lb); + if (IS_ERR(func_lb)) { + status = PTR_ERR(func_lb); + goto err_put_func_inst_lb; + } + sourcesink_driver.iConfiguration = strings_dev[USB_GZERO_SS_DESC].id; loopback_driver.iConfiguration = strings_dev[USB_GZERO_LB_DESC].id; @@ -315,25 +326,50 @@ static int __init zero_bind(struct usb_composite_dev *cdev) * SH3 only allows one config... */ if (loopdefault) { - usb_add_config(cdev, &loopback_driver, loopback_bind_config); - usb_add_config(cdev, &sourcesink_driver, - sourcesink_bind_config); + usb_add_config_only(cdev, &loopback_driver); + usb_add_config_only(cdev, &sourcesink_driver); } else { - usb_add_config(cdev, &sourcesink_driver, - sourcesink_bind_config); - usb_add_config(cdev, &loopback_driver, loopback_bind_config); + usb_add_config_only(cdev, &sourcesink_driver); + usb_add_config_only(cdev, &loopback_driver); } + status = usb_add_function(&sourcesink_driver, func_ss); + if (status) + goto err_conf_flb; + usb_ep_autoconfig_reset(cdev->gadget); + status = usb_add_function(&loopback_driver, func_lb); + if (status) + goto err_conf_flb; + + usb_ep_autoconfig_reset(cdev->gadget); usb_composite_overwrite_options(cdev, &coverwrite); INFO(cdev, "%s, version: " DRIVER_VERSION "\n", longname); return 0; + +err_conf_flb: + usb_put_function(func_lb); + func_lb = NULL; +err_put_func_inst_lb: + usb_put_function_instance(func_inst_lb); + func_inst_lb = NULL; +err_put_func_ss: + usb_put_function(func_ss); + func_ss = NULL; +err_put_func_inst_ss: + usb_put_function_instance(func_inst_ss); + func_inst_ss = NULL; + return status; } static int zero_unbind(struct usb_composite_dev *cdev) { del_timer_sync(&autoresume_timer); + if (!IS_ERR_OR_NULL(func_ss)) + usb_put_function(func_ss); + if (!IS_ERR_OR_NULL(func_lb)) + usb_put_function(func_lb); return 0; } -- cgit v1.2.3 From 05c062c571ee19f08deb1c12fc2dd14b92f89eb8 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:02 +0100 Subject: usb: gadget: f_acm: remove empty function The significant part of this function was removed in 90f7976 ("USB: Remove unsupported usb gadget drivers"). I would move this to function bind time but I don't see the point in moving an empty function. Therefore bye bye. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_acm.c | 10 ---------- 1 file changed, 10 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c index 549174466c21..d4a7c1912105 100644 --- a/drivers/usb/gadget/f_acm.c +++ b/drivers/usb/gadget/f_acm.c @@ -711,13 +711,6 @@ acm_unbind(struct usb_configuration *c, struct usb_function *f) kfree(acm); } -/* Some controllers can't support CDC ACM ... */ -static inline bool can_support_cdc(struct usb_configuration *c) -{ - /* everything else is *probably* fine ... */ - return true; -} - /** * acm_bind_config - add a CDC ACM function to a configuration * @c: the configuration to support the CDC ACM instance @@ -735,9 +728,6 @@ int acm_bind_config(struct usb_configuration *c, u8 port_num) struct f_acm *acm; int status; - if (!can_support_cdc(c)) - return -EINVAL; - /* REVISIT might want instance-specific strings to help * distinguish instances ... */ -- cgit v1.2.3 From 48177cd83792d25a5bab7f887acc47c2c314810e Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:03 +0100 Subject: usb: gadget: g_serial: split the three possible functions into three bind functions This patch factors out the three possible functions into three possible bind functions which are passed as an argument to usb_add_config(). This will ease the step by step converting of the individual functions to the new function registration method. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/serial.c | 43 ++++++++++++++++++++++++++++++++----------- 1 file changed, 32 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c index 44752f531e85..bc23905800d3 100644 --- a/drivers/usb/gadget/serial.c +++ b/drivers/usb/gadget/serial.c @@ -129,19 +129,33 @@ MODULE_PARM_DESC(n_ports, "number of ports to create, default=1"); /*-------------------------------------------------------------------------*/ -static int __init serial_bind_config(struct usb_configuration *c) +static int __init serial_bind_acm_config(struct usb_configuration *c) { unsigned i; int status = 0; - for (i = 0; i < n_ports && status == 0; i++) { - if (use_acm) - status = acm_bind_config(c, i); - else if (use_obex) - status = obex_bind_config(c, i); - else - status = gser_bind_config(c, i); - } + for (i = 0; i < n_ports && status == 0; i++) + status = acm_bind_config(c, i); + return status; +} + +static int __init serial_bind_obex_config(struct usb_configuration *c) +{ + unsigned i; + int status = 0; + + for (i = 0; i < n_ports && status == 0; i++) + status = obex_bind_config(c, i); + return status; +} + +static int __init serial_bind_gser_config(struct usb_configuration *c) +{ + unsigned i; + int status = 0; + + for (i = 0; i < n_ports && status == 0; i++) + status = gser_bind_config(c, i); return status; } @@ -178,8 +192,15 @@ static int __init gs_bind(struct usb_composite_dev *cdev) } /* register our configuration */ - status = usb_add_config(cdev, &serial_config_driver, - serial_bind_config); + if (use_acm) + status = usb_add_config(cdev, &serial_config_driver, + serial_bind_acm_config); + else if (use_obex) + status = usb_add_config(cdev, &serial_config_driver, + serial_bind_obex_config); + else + status = usb_add_config(cdev, &serial_config_driver, + serial_bind_gser_config); if (status < 0) goto fail; -- cgit v1.2.3 From 3249ca22c088c286d6227d8fae9c85a43a8ce9f6 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:04 +0100 Subject: usb: gadget: u_serial: convert into a module Every user of u_serial has now to select the U_SERIAL symbol instead of including the file. There is one limition with this: ports and and gs_tty_driver are global variables in u_serial. Since all users share them, there can be only one user loaded at a time i.e. either g_serial or g_nokia. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/Kconfig | 9 +++++++++ drivers/usb/gadget/Makefile | 1 + drivers/usb/gadget/acm_ms.c | 1 - drivers/usb/gadget/cdc2.c | 1 - drivers/usb/gadget/dbgp.c | 4 +--- drivers/usb/gadget/multi.c | 1 - drivers/usb/gadget/nokia.c | 1 - drivers/usb/gadget/serial.c | 1 - drivers/usb/gadget/u_serial.c | 13 ++++++++++++- 9 files changed, 23 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 0ef5549b6544..8aefbbddf2a7 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -503,6 +503,9 @@ config USB_LIBCOMPOSITE config USB_F_SS_LB tristate +config USB_U_SERIAL + tristate + choice tristate "USB Gadget Drivers" default USB_ETH @@ -754,6 +757,7 @@ config USB_GADGET_TARGET config USB_G_SERIAL tristate "Serial Gadget (with CDC ACM and CDC OBEX support)" + select USB_U_SERIAL select USB_LIBCOMPOSITE help The Serial Gadget talks to the Linux-USB generic serial driver. @@ -807,6 +811,7 @@ config USB_CDC_COMPOSITE tristate "CDC Composite Device (Ethernet and ACM)" depends on NET select USB_LIBCOMPOSITE + select USB_U_SERIAL help This driver provides two functions in one configuration: a CDC Ethernet (ECM) link, and a CDC ACM (serial port) link. @@ -822,6 +827,7 @@ config USB_G_NOKIA tristate "Nokia composite gadget" depends on PHONET select USB_LIBCOMPOSITE + select USB_U_SERIAL help The Nokia composite gadget provides support for acm, obex and phonet in only one composite gadget driver. @@ -833,6 +839,7 @@ config USB_G_ACM_MS tristate "CDC Composite Device (ACM and mass storage)" depends on BLOCK select USB_LIBCOMPOSITE + select USB_U_SERIAL help This driver provides two functions in one configuration: a mass storage, and a CDC ACM (serial port) link. @@ -845,6 +852,7 @@ config USB_G_MULTI depends on BLOCK && NET select USB_G_MULTI_CDC if !USB_G_MULTI_RNDIS select USB_LIBCOMPOSITE + select USB_U_SERIAL help The Multifunction Composite Gadget provides Ethernet (RNDIS and/or CDC Ethernet), mass storage and ACM serial link @@ -920,6 +928,7 @@ config USB_G_DBGP_PRINTK config USB_G_DBGP_SERIAL depends on USB_G_DBGP + select USB_U_SERIAL bool "serial" help Userland can interact using /dev/ttyGSxxx. diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index e412befa7a35..b88ee775de6b 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -78,3 +78,4 @@ obj-$(CONFIG_USB_GADGET_TARGET) += tcm_usb_gadget.o # USB Functions f_ss_lb-y := f_loopback.o f_sourcesink.o obj-$(CONFIG_USB_F_SS_LB) += f_ss_lb.o +obj-$(CONFIG_USB_U_SERIAL) += u_serial.o diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c index 5a7f289805ff..35cbe7283514 100644 --- a/drivers/usb/gadget/acm_ms.c +++ b/drivers/usb/gadget/acm_ms.c @@ -41,7 +41,6 @@ * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ -#include "u_serial.c" #include "f_acm.c" #include "f_mass_storage.c" diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c index 1e4bb77f00bb..379df679ef30 100644 --- a/drivers/usb/gadget/cdc2.c +++ b/drivers/usb/gadget/cdc2.c @@ -43,7 +43,6 @@ USB_GADGET_COMPOSITE_OPTIONS(); * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ -#include "u_serial.c" #include "f_acm.c" #include "f_ecm.c" #include "u_ether.c" diff --git a/drivers/usb/gadget/dbgp.c b/drivers/usb/gadget/dbgp.c index 87d165028162..41eb98df5644 100644 --- a/drivers/usb/gadget/dbgp.c +++ b/drivers/usb/gadget/dbgp.c @@ -13,9 +13,7 @@ #include #include -#ifdef CONFIG_USB_G_DBGP_SERIAL -#include "u_serial.c" -#endif +#include "u_serial.h" #define DRIVER_VENDOR_ID 0x0525 /* NetChip */ #define DRIVER_PRODUCT_ID 0xc0de /* undefined */ diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c index 88472bf7dbb7..00667911100d 100644 --- a/drivers/usb/gadget/multi.c +++ b/drivers/usb/gadget/multi.c @@ -42,7 +42,6 @@ MODULE_LICENSE("GPL"); */ #include "f_mass_storage.c" -#include "u_serial.c" #include "f_acm.c" #include "f_ecm.c" diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c index 1475d663b527..48f0d5c372a8 100644 --- a/drivers/usb/gadget/nokia.c +++ b/drivers/usb/gadget/nokia.c @@ -37,7 +37,6 @@ * the runtime footprint, and giving us at least some parts of what * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ -#include "u_serial.c" #include "f_acm.c" #include "f_ecm.c" #include "f_obex.c" diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c index bc23905800d3..4816f494fc4d 100644 --- a/drivers/usb/gadget/serial.c +++ b/drivers/usb/gadget/serial.c @@ -39,7 +39,6 @@ #include "f_acm.c" #include "f_obex.c" #include "f_serial.c" -#include "u_serial.c" /*-------------------------------------------------------------------------*/ USB_GADGET_COMPOSITE_OPTIONS(); diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c index d0f95482f40e..1662d839a1d6 100644 --- a/drivers/usb/gadget/u_serial.c +++ b/drivers/usb/gadget/u_serial.c @@ -26,6 +26,7 @@ #include #include #include +#include #include "u_serial.h" @@ -309,6 +310,7 @@ gs_alloc_req(struct usb_ep *ep, unsigned len, gfp_t kmalloc_flags) return req; } +EXPORT_SYMBOL_GPL(gs_alloc_req); /* * gs_free_req @@ -320,6 +322,7 @@ void gs_free_req(struct usb_ep *ep, struct usb_request *req) kfree(req->buf); usb_ep_free_request(ep, req); } +EXPORT_SYMBOL_GPL(gs_free_req); /* * gs_send_packet @@ -1081,6 +1084,9 @@ int gserial_setup(struct usb_gadget *g, unsigned count) if (count == 0 || count > N_PORTS) return -EINVAL; + if (gs_tty_driver) + return -EBUSY; + gs_tty_driver = alloc_tty_driver(count); if (!gs_tty_driver) return -ENOMEM; @@ -1153,6 +1159,7 @@ fail: gs_tty_driver = NULL; return status; } +EXPORT_SYMBOL_GPL(gserial_setup); static int gs_closed(struct gs_port *port) { @@ -1213,6 +1220,7 @@ void gserial_cleanup(void) pr_debug("%s: cleaned up ttyGS* support\n", __func__); } +EXPORT_SYMBOL_GPL(gserial_cleanup); /** * gserial_connect - notify TTY I/O glue that USB link is active @@ -1292,7 +1300,7 @@ fail_out: gser->in->driver_data = NULL; return status; } - +EXPORT_SYMBOL_GPL(gserial_connect); /** * gserial_disconnect - notify TTY I/O glue that USB link is inactive * @gser: the function, on which gserial_connect() was called @@ -1347,3 +1355,6 @@ void gserial_disconnect(struct gserial *gser) spin_unlock_irqrestore(&port->port_lock, flags); } +EXPORT_SYMBOL_GPL(gserial_disconnect); + +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From b473577854fea63055ff9ab84f0f52a3e8aed15e Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:05 +0100 Subject: usb: gadget: composite: add usb_remove_function() This will be used to remove a single function from a given config. Right now "ignore" that an error at ->bind() time and cleanup later during composite_unbind() / remove_config(). Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 12 ++++++++++++ include/linux/usb/composite.h | 1 + 2 files changed, 13 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 4aa0e4652228..366facccf4f6 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -215,6 +215,18 @@ done: } EXPORT_SYMBOL_GPL(usb_add_function); +void usb_remove_function(struct usb_configuration *c, struct usb_function *f) +{ + if (f->disable) + f->disable(f); + + bitmap_zero(f->endpoints, 32); + list_del(&f->list); + if (f->unbind) + f->unbind(c, f); +} +EXPORT_SYMBOL_GPL(usb_remove_function); + /** * usb_function_deactivate - prevent function and gadget enumeration * @function: the function that isn't yet ready to respond diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 3834e3330b23..8c7a6295ae78 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -461,6 +461,7 @@ struct usb_configuration *usb_get_config(struct usb_composite_dev *cdev, int val); int usb_add_config_only(struct usb_composite_dev *cdev, struct usb_configuration *config); +void usb_remove_function(struct usb_configuration *c, struct usb_function *f); #define DECLARE_USB_FUNCTION(_name, _inst_alloc, _func_alloc) \ static struct usb_function_driver _name ## usb_func = { \ -- cgit v1.2.3 From 19b10a8828a6cdd5a4e7e37babd5084d35641f87 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:06 +0100 Subject: usb: gadget: allocate & giveback serial ports instead hard code them This patch removes gserial_setup() and gserial_cleanup() and adds gserial_alloc_line() and gserial_free_line() to replace them. The initial setup of u_serial happens now on module load time. A maximum of four TTY ports can be requested which is the current limit. In theory we could extend this limit, the hard limit is the number of available endpoints. alloc_tty_driver() is now called at module init time with the max available ports. The per-line footprint here is on 32bit is 3 * size of pointer + 60 bytes (for cdevs). The remaining memory (struct gs_port) is allocated once a port is requested. With this change it is possible to load g_multi and g_serial at the same time. GS0 receives the module that is loaded first, GS1 is received by the next module and so on. With the configfs interface the port number can be exported and the device node is more predictable. Nothing changes for g_serial and friends as long as one module is used. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/acm_ms.c | 10 +- drivers/usb/gadget/cdc2.c | 9 +- drivers/usb/gadget/dbgp.c | 10 +- drivers/usb/gadget/f_acm.c | 3 - drivers/usb/gadget/f_obex.c | 4 - drivers/usb/gadget/f_serial.c | 4 - drivers/usb/gadget/multi.c | 12 +- drivers/usb/gadget/nokia.c | 37 +++-- drivers/usb/gadget/serial.c | 31 +++-- drivers/usb/gadget/u_serial.c | 310 ++++++++++++++++++++---------------------- drivers/usb/gadget/u_serial.h | 8 +- 11 files changed, 229 insertions(+), 209 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c index 35cbe7283514..eb0fbdae5ccb 100644 --- a/drivers/usb/gadget/acm_ms.c +++ b/drivers/usb/gadget/acm_ms.c @@ -111,6 +111,7 @@ FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data); static struct fsg_common fsg_common; /*-------------------------------------------------------------------------*/ +static unsigned char tty_line; /* * We _always_ have both ACM and mass storage functions. @@ -125,7 +126,7 @@ static int __init acm_ms_do_config(struct usb_configuration *c) } - status = acm_bind_config(c, 0); + status = acm_bind_config(c, tty_line); if (status < 0) return status; @@ -152,7 +153,7 @@ static int __init acm_ms_bind(struct usb_composite_dev *cdev) void *retp; /* set up serial link layer */ - status = gserial_setup(cdev->gadget, 1); + status = gserial_alloc_line(&tty_line); if (status < 0) return status; @@ -188,14 +189,13 @@ static int __init acm_ms_bind(struct usb_composite_dev *cdev) fail1: fsg_common_put(&fsg_common); fail0: - gserial_cleanup(); + gserial_free_line(tty_line); return status; } static int __exit acm_ms_unbind(struct usb_composite_dev *cdev) { - gserial_cleanup(); - + gserial_free_line(tty_line); return 0; } diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c index 379df679ef30..16911a5aeb03 100644 --- a/drivers/usb/gadget/cdc2.c +++ b/drivers/usb/gadget/cdc2.c @@ -108,6 +108,7 @@ static u8 hostaddr[ETH_ALEN]; /*-------------------------------------------------------------------------*/ +static unsigned char tty_line; /* * We _always_ have both CDC ECM and CDC ACM functions. */ @@ -124,7 +125,7 @@ static int __init cdc_do_config(struct usb_configuration *c) if (status < 0) return status; - status = acm_bind_config(c, 0); + status = acm_bind_config(c, tty_line); if (status < 0) return status; @@ -157,7 +158,7 @@ static int __init cdc_bind(struct usb_composite_dev *cdev) return status; /* set up serial link layer */ - status = gserial_setup(cdev->gadget, 1); + status = gserial_alloc_line(&tty_line); if (status < 0) goto fail0; @@ -183,7 +184,7 @@ static int __init cdc_bind(struct usb_composite_dev *cdev) return 0; fail1: - gserial_cleanup(); + gserial_free_line(tty_line); fail0: gether_cleanup(); return status; @@ -191,7 +192,7 @@ fail0: static int __exit cdc_unbind(struct usb_composite_dev *cdev) { - gserial_cleanup(); + gserial_free_line(tty_line); gether_cleanup(); return 0; } diff --git a/drivers/usb/gadget/dbgp.c b/drivers/usb/gadget/dbgp.c index 41eb98df5644..986fc511a2ed 100644 --- a/drivers/usb/gadget/dbgp.c +++ b/drivers/usb/gadget/dbgp.c @@ -231,6 +231,10 @@ static void dbgp_unbind(struct usb_gadget *gadget) gadget->ep0->driver_data = NULL; } +#ifdef CONFIG_USB_G_DBGP_SERIAL +static unsigned char tty_line; +#endif + static int __init dbgp_configure_endpoints(struct usb_gadget *gadget) { int stp; @@ -268,7 +272,7 @@ static int __init dbgp_configure_endpoints(struct usb_gadget *gadget) dbgp.serial->in->desc = &i_desc; dbgp.serial->out->desc = &o_desc; - if (gserial_setup(gadget, 1) < 0) { + if (gserial_alloc_line(&tty_line)) { stp = 3; goto fail_3; } @@ -377,7 +381,7 @@ static int dbgp_setup(struct usb_gadget *gadget, #ifdef CONFIG_USB_G_DBGP_PRINTK err = dbgp_enable_ep(); #else - err = gserial_connect(dbgp.serial, 0); + err = gserial_connect(dbgp.serial, tty_line); #endif if (err < 0) goto fail; @@ -420,7 +424,7 @@ static void __exit dbgp_exit(void) { usb_gadget_unregister_driver(&dbgp_driver); #ifdef CONFIG_USB_G_DBGP_SERIAL - gserial_cleanup(); + gserial_free_line(tty_line); #endif } diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c index d4a7c1912105..3178fa70916e 100644 --- a/drivers/usb/gadget/f_acm.c +++ b/drivers/usb/gadget/f_acm.c @@ -719,9 +719,6 @@ acm_unbind(struct usb_configuration *c, struct usb_function *f) * * Returns zero on success, else negative errno. * - * Caller must have called @gserial_setup() with enough ports to - * handle all the ones it binds. Caller is also responsible - * for calling @gserial_cleanup() before module unload. */ int acm_bind_config(struct usb_configuration *c, u8 port_num) { diff --git a/drivers/usb/gadget/f_obex.c b/drivers/usb/gadget/f_obex.c index d8dd8782768c..36a004563b82 100644 --- a/drivers/usb/gadget/f_obex.c +++ b/drivers/usb/gadget/f_obex.c @@ -406,10 +406,6 @@ static inline bool can_support_obex(struct usb_configuration *c) * Context: single threaded during gadget setup * * Returns zero on success, else negative errno. - * - * Caller must have called @gserial_setup() with enough ports to - * handle all the ones it binds. Caller is also responsible - * for calling @gserial_cleanup() before module unload. */ int __init obex_bind_config(struct usb_configuration *c, u8 port_num) { diff --git a/drivers/usb/gadget/f_serial.c b/drivers/usb/gadget/f_serial.c index 98fa7795df5f..da33cfb3031d 100644 --- a/drivers/usb/gadget/f_serial.c +++ b/drivers/usb/gadget/f_serial.c @@ -260,10 +260,6 @@ gser_unbind(struct usb_configuration *c, struct usb_function *f) * Context: single threaded during gadget setup * * Returns zero on success, else negative errno. - * - * Caller must have called @gserial_setup() with enough ports to - * handle all the ones it binds. Caller is also responsible - * for calling @gserial_cleanup() before module unload. */ int __init gser_bind_config(struct usb_configuration *c, u8 port_num) { diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c index 00667911100d..9ca0ac0334e7 100644 --- a/drivers/usb/gadget/multi.c +++ b/drivers/usb/gadget/multi.c @@ -136,6 +136,7 @@ static struct fsg_common fsg_common; static u8 hostaddr[ETH_ALEN]; +static unsigned char tty_line; /********** RNDIS **********/ @@ -154,7 +155,7 @@ static __init int rndis_do_config(struct usb_configuration *c) if (ret < 0) return ret; - ret = acm_bind_config(c, 0); + ret = acm_bind_config(c, tty_line); if (ret < 0) return ret; @@ -205,7 +206,7 @@ static __init int cdc_do_config(struct usb_configuration *c) if (ret < 0) return ret; - ret = acm_bind_config(c, 0); + ret = acm_bind_config(c, tty_line); if (ret < 0) return ret; @@ -242,7 +243,6 @@ static int cdc_config_register(struct usb_composite_dev *cdev) /****************************** Gadget Bind ******************************/ - static int __ref multi_bind(struct usb_composite_dev *cdev) { struct usb_gadget *gadget = cdev->gadget; @@ -260,7 +260,7 @@ static int __ref multi_bind(struct usb_composite_dev *cdev) return status; /* set up serial link layer */ - status = gserial_setup(cdev->gadget, 1); + status = gserial_alloc_line(&tty_line); if (status < 0) goto fail0; @@ -300,7 +300,7 @@ static int __ref multi_bind(struct usb_composite_dev *cdev) fail2: fsg_common_put(&fsg_common); fail1: - gserial_cleanup(); + gserial_free_line(tty_line); fail0: gether_cleanup(); return status; @@ -308,7 +308,7 @@ fail0: static int __exit multi_unbind(struct usb_composite_dev *cdev) { - gserial_cleanup(); + gserial_free_line(tty_line); gether_cleanup(); return 0; } diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c index 48f0d5c372a8..084d0d7cb8fa 100644 --- a/drivers/usb/gadget/nokia.c +++ b/drivers/usb/gadget/nokia.c @@ -100,6 +100,15 @@ MODULE_LICENSE("GPL"); static u8 hostaddr[ETH_ALEN]; +enum { + TTY_PORT_OBEX0, + TTY_PORT_OBEX1, + TTY_PORT_ACM, + TTY_PORTS_MAX, +}; + +static unsigned char tty_lines[TTY_PORTS_MAX]; + static int __init nokia_bind_config(struct usb_configuration *c) { int status = 0; @@ -108,15 +117,15 @@ static int __init nokia_bind_config(struct usb_configuration *c) if (status) printk(KERN_DEBUG "could not bind phonet config\n"); - status = obex_bind_config(c, 0); + status = obex_bind_config(c, tty_lines[TTY_PORT_OBEX0]); if (status) printk(KERN_DEBUG "could not bind obex config %d\n", 0); - status = obex_bind_config(c, 1); + status = obex_bind_config(c, tty_lines[TTY_PORT_OBEX1]); if (status) printk(KERN_DEBUG "could not bind obex config %d\n", 0); - status = acm_bind_config(c, 2); + status = acm_bind_config(c, tty_lines[TTY_PORT_ACM]); if (status) printk(KERN_DEBUG "could not bind acm config\n"); @@ -147,14 +156,17 @@ static int __init nokia_bind(struct usb_composite_dev *cdev) { struct usb_gadget *gadget = cdev->gadget; int status; + int cur_line; status = gphonet_setup(cdev->gadget); if (status < 0) goto err_phonet; - status = gserial_setup(cdev->gadget, 3); - if (status < 0) - goto err_serial; + for (cur_line = 0; cur_line < TTY_PORTS_MAX; cur_line++) { + status = gserial_alloc_line(&tty_lines[cur_line]); + if (status) + goto err_ether; + } status = gether_setup(cdev->gadget, hostaddr); if (status < 0) @@ -191,8 +203,10 @@ static int __init nokia_bind(struct usb_composite_dev *cdev) err_usb: gether_cleanup(); err_ether: - gserial_cleanup(); -err_serial: + cur_line--; + while (cur_line >= 0) + gserial_free_line(tty_lines[cur_line--]); + gphonet_cleanup(); err_phonet: return status; @@ -200,8 +214,13 @@ err_phonet: static int __exit nokia_unbind(struct usb_composite_dev *cdev) { + int i; + gphonet_cleanup(); - gserial_cleanup(); + + for (i = 0; i < TTY_PORTS_MAX; i++) + gserial_free_line(tty_lines[i]); + gether_cleanup(); return 0; diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c index 4816f494fc4d..a883562f6a89 100644 --- a/drivers/usb/gadget/serial.c +++ b/drivers/usb/gadget/serial.c @@ -127,6 +127,7 @@ module_param(n_ports, uint, 0); MODULE_PARM_DESC(n_ports, "number of ports to create, default=1"); /*-------------------------------------------------------------------------*/ +static unsigned char tty_lines[MAX_U_SERIAL_PORTS]; static int __init serial_bind_acm_config(struct usb_configuration *c) { @@ -134,7 +135,7 @@ static int __init serial_bind_acm_config(struct usb_configuration *c) int status = 0; for (i = 0; i < n_ports && status == 0; i++) - status = acm_bind_config(c, i); + status = acm_bind_config(c, tty_lines[i]); return status; } @@ -144,7 +145,7 @@ static int __init serial_bind_obex_config(struct usb_configuration *c) int status = 0; for (i = 0; i < n_ports && status == 0; i++) - status = obex_bind_config(c, i); + status = obex_bind_config(c, tty_lines[i]); return status; } @@ -154,7 +155,7 @@ static int __init serial_bind_gser_config(struct usb_configuration *c) int status = 0; for (i = 0; i < n_ports && status == 0; i++) - status = gser_bind_config(c, i); + status = gser_bind_config(c, tty_lines[i]); return status; } @@ -165,13 +166,25 @@ static struct usb_configuration serial_config_driver = { .bmAttributes = USB_CONFIG_ATT_SELFPOWER, }; +static int gs_unbind(struct usb_composite_dev *cdev) +{ + int i; + + for (i = 0; i < n_ports; i++) + gserial_free_line(tty_lines[i]); + return 0; +} + static int __init gs_bind(struct usb_composite_dev *cdev) { int status; + int cur_line; - status = gserial_setup(cdev->gadget, n_ports); - if (status < 0) - return status; + for (cur_line = 0; cur_line < n_ports; cur_line++) { + status = gserial_alloc_line(&tty_lines[cur_line]); + if (status) + goto fail; + } /* Allocate string descriptor numbers ... note that string * contents can be overridden by the composite_dev glue. @@ -209,7 +222,9 @@ static int __init gs_bind(struct usb_composite_dev *cdev) return 0; fail: - gserial_cleanup(); + cur_line--; + while (cur_line >= 0) + gserial_free_line(tty_lines[cur_line--]); return status; } @@ -219,6 +234,7 @@ static __refdata struct usb_composite_driver gserial_driver = { .strings = dev_strings, .max_speed = USB_SPEED_SUPER, .bind = gs_bind, + .unbind = gs_unbind, }; static int __init init(void) @@ -254,6 +270,5 @@ module_init(init); static void __exit cleanup(void) { usb_composite_unregister(&gserial_driver); - gserial_cleanup(); } module_exit(cleanup); diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c index 1662d839a1d6..ea360fda2e14 100644 --- a/drivers/usb/gadget/u_serial.c +++ b/drivers/usb/gadget/u_serial.c @@ -36,11 +36,12 @@ * "serial port" functionality through the USB gadget stack. Each such * port is exposed through a /dev/ttyGS* node. * - * After initialization (gserial_setup), these TTY port devices stay - * available until they are removed (gserial_cleanup). Each one may be - * connected to a USB function (gserial_connect), or disconnected (with - * gserial_disconnect) when the USB host issues a config change event. - * Data can only flow when the port is connected to the host. + * After this module has been loaded, the individual TTY port can be requested + * (gserial_alloc_line()) and it will stay available until they are removed + * (gserial_free_line()). Each one may be connected to a USB function + * (gserial_connect), or disconnected (with gserial_disconnect) when the USB + * host issues a config change event. Data can only flow when the port is + * connected to the host. * * A given TTY port can be made available in multiple configurations. * For example, each one might expose a ttyGS0 node which provides a @@ -120,13 +121,10 @@ struct gs_port { struct usb_cdc_line_coding port_line_coding; /* 8-N-1 etc */ }; -/* increase N_PORTS if you need more */ -#define N_PORTS 4 static struct portmaster { struct mutex lock; /* protect open/close */ struct gs_port *port; -} ports[N_PORTS]; -static unsigned n_ports; +} ports[MAX_U_SERIAL_PORTS]; #define GS_CLOSE_TIMEOUT 15 /* seconds */ @@ -1033,10 +1031,19 @@ static int gs_port_alloc(unsigned port_num, struct usb_cdc_line_coding *coding) { struct gs_port *port; + int ret = 0; + + mutex_lock(&ports[port_num].lock); + if (ports[port_num].port) { + ret = -EBUSY; + goto out; + } port = kzalloc(sizeof(struct gs_port), GFP_KERNEL); - if (port == NULL) - return -ENOMEM; + if (port == NULL) { + ret = -ENOMEM; + goto out; + } tty_port_init(&port->port); spin_lock_init(&port->port_lock); @@ -1052,114 +1059,10 @@ gs_port_alloc(unsigned port_num, struct usb_cdc_line_coding *coding) port->port_line_coding = *coding; ports[port_num].port = port; - - return 0; -} - -/** - * gserial_setup - initialize TTY driver for one or more ports - * @g: gadget to associate with these ports - * @count: how many ports to support - * Context: may sleep - * - * The TTY stack needs to know in advance how many devices it should - * plan to manage. Use this call to set up the ports you will be - * exporting through USB. Later, connect them to functions based - * on what configuration is activated by the USB host; and disconnect - * them as appropriate. - * - * An example would be a two-configuration device in which both - * configurations expose port 0, but through different functions. - * One configuration could even expose port 1 while the other - * one doesn't. - * - * Returns negative errno or zero. - */ -int gserial_setup(struct usb_gadget *g, unsigned count) -{ - unsigned i; - struct usb_cdc_line_coding coding; - int status; - - if (count == 0 || count > N_PORTS) - return -EINVAL; - - if (gs_tty_driver) - return -EBUSY; - - gs_tty_driver = alloc_tty_driver(count); - if (!gs_tty_driver) - return -ENOMEM; - - gs_tty_driver->driver_name = "g_serial"; - gs_tty_driver->name = PREFIX; - /* uses dynamically assigned dev_t values */ - - gs_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; - gs_tty_driver->subtype = SERIAL_TYPE_NORMAL; - gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; - gs_tty_driver->init_termios = tty_std_termios; - - /* 9600-8-N-1 ... matches defaults expected by "usbser.sys" on - * MS-Windows. Otherwise, most of these flags shouldn't affect - * anything unless we were to actually hook up to a serial line. - */ - gs_tty_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - gs_tty_driver->init_termios.c_ispeed = 9600; - gs_tty_driver->init_termios.c_ospeed = 9600; - - coding.dwDTERate = cpu_to_le32(9600); - coding.bCharFormat = 8; - coding.bParityType = USB_CDC_NO_PARITY; - coding.bDataBits = USB_CDC_1_STOP_BITS; - - tty_set_operations(gs_tty_driver, &gs_tty_ops); - - /* make devices be openable */ - for (i = 0; i < count; i++) { - mutex_init(&ports[i].lock); - status = gs_port_alloc(i, &coding); - if (status) { - count = i; - goto fail; - } - } - n_ports = count; - - /* export the driver ... */ - status = tty_register_driver(gs_tty_driver); - if (status) { - pr_err("%s: cannot register, err %d\n", - __func__, status); - goto fail; - } - - /* ... and sysfs class devices, so mdev/udev make /dev/ttyGS* */ - for (i = 0; i < count; i++) { - struct device *tty_dev; - - tty_dev = tty_port_register_device(&ports[i].port->port, - gs_tty_driver, i, &g->dev); - if (IS_ERR(tty_dev)) - pr_warning("%s: no classdev for port %d, err %ld\n", - __func__, i, PTR_ERR(tty_dev)); - } - - pr_debug("%s: registered %d ttyGS* device%s\n", __func__, - count, (count == 1) ? "" : "s"); - - return status; -fail: - while (count--) { - tty_port_destroy(&ports[count].port->port); - kfree(ports[count].port); - } - put_tty_driver(gs_tty_driver); - gs_tty_driver = NULL; - return status; +out: + mutex_unlock(&ports[port_num].lock); + return ret; } -EXPORT_SYMBOL_GPL(gserial_setup); static int gs_closed(struct gs_port *port) { @@ -1171,56 +1074,77 @@ static int gs_closed(struct gs_port *port) return cond; } -/** - * gserial_cleanup - remove TTY-over-USB driver and devices - * Context: may sleep - * - * This is called to free all resources allocated by @gserial_setup(). - * Accordingly, it may need to wait until some open /dev/ files have - * closed. - * - * The caller must have issued @gserial_disconnect() for any ports - * that had previously been connected, so that there is never any - * I/O pending when it's called. - */ -void gserial_cleanup(void) +static void gserial_free_port(struct gs_port *port) +{ + tasklet_kill(&port->push); + /* wait for old opens to finish */ + wait_event(port->port.close_wait, gs_closed(port)); + WARN_ON(port->port_usb != NULL); + tty_port_destroy(&port->port); + kfree(port); +} + +void gserial_free_line(unsigned char port_num) { - unsigned i; struct gs_port *port; - if (!gs_tty_driver) + mutex_lock(&ports[port_num].lock); + if (WARN_ON(!ports[port_num].port)) { + mutex_unlock(&ports[port_num].lock); return; + } + port = ports[port_num].port; + ports[port_num].port = NULL; + mutex_unlock(&ports[port_num].lock); - /* start sysfs and /dev/ttyGS* node removal */ - for (i = 0; i < n_ports; i++) - tty_unregister_device(gs_tty_driver, i); - - for (i = 0; i < n_ports; i++) { - /* prevent new opens */ - mutex_lock(&ports[i].lock); - port = ports[i].port; - ports[i].port = NULL; - mutex_unlock(&ports[i].lock); - - tasklet_kill(&port->push); + gserial_free_port(port); + tty_unregister_device(gs_tty_driver, port_num); +} +EXPORT_SYMBOL_GPL(gserial_free_line); - /* wait for old opens to finish */ - wait_event(port->port.close_wait, gs_closed(port)); +int gserial_alloc_line(unsigned char *line_num) +{ + struct usb_cdc_line_coding coding; + struct device *tty_dev; + int ret; + int port_num; - WARN_ON(port->port_usb != NULL); + coding.dwDTERate = cpu_to_le32(9600); + coding.bCharFormat = 8; + coding.bParityType = USB_CDC_NO_PARITY; + coding.bDataBits = USB_CDC_1_STOP_BITS; - tty_port_destroy(&port->port); - kfree(port); + for (port_num = 0; port_num < MAX_U_SERIAL_PORTS; port_num++) { + ret = gs_port_alloc(port_num, &coding); + if (ret == -EBUSY) + continue; + if (ret) + return ret; + break; } - n_ports = 0; + if (ret) + return ret; - tty_unregister_driver(gs_tty_driver); - put_tty_driver(gs_tty_driver); - gs_tty_driver = NULL; + /* ... and sysfs class devices, so mdev/udev make /dev/ttyGS* */ - pr_debug("%s: cleaned up ttyGS* support\n", __func__); + tty_dev = tty_port_register_device(&ports[port_num].port->port, + gs_tty_driver, port_num, NULL); + if (IS_ERR(tty_dev)) { + struct gs_port *port; + pr_err("%s: failed to register tty for port %d, err %ld\n", + __func__, port_num, PTR_ERR(tty_dev)); + + ret = PTR_ERR(tty_dev); + port = ports[port_num].port; + ports[port_num].port = NULL; + gserial_free_port(port); + goto err; + } + *line_num = port_num; +err: + return ret; } -EXPORT_SYMBOL_GPL(gserial_cleanup); +EXPORT_SYMBOL_GPL(gserial_alloc_line); /** * gserial_connect - notify TTY I/O glue that USB link is active @@ -1237,8 +1161,8 @@ EXPORT_SYMBOL_GPL(gserial_cleanup); * * Caller needs to have set up the endpoints and USB function in @dev * before calling this, as well as the appropriate (speed-specific) - * endpoint descriptors, and also have set up the TTY driver by calling - * @gserial_setup(). + * endpoint descriptors, and also have allocate @port_num by calling + * @gserial_alloc_line(). * * Returns negative errno or zero. * On success, ep->driver_data will be overwritten. @@ -1249,11 +1173,18 @@ int gserial_connect(struct gserial *gser, u8 port_num) unsigned long flags; int status; - if (!gs_tty_driver || port_num >= n_ports) + if (port_num >= MAX_U_SERIAL_PORTS) return -ENXIO; - /* we "know" gserial_cleanup() hasn't been called */ port = ports[port_num].port; + if (!port) { + pr_err("serial line %d not allocated.\n", port_num); + return -EINVAL; + } + if (port->port_usb) { + pr_err("serial line %d is in use.\n", port_num); + return -EBUSY; + } /* activate the endpoints */ status = usb_ep_enable(gser->in); @@ -1357,4 +1288,63 @@ void gserial_disconnect(struct gserial *gser) } EXPORT_SYMBOL_GPL(gserial_disconnect); +int userial_init(void) +{ + unsigned i; + int status; + + gs_tty_driver = alloc_tty_driver(MAX_U_SERIAL_PORTS); + if (!gs_tty_driver) + return -ENOMEM; + + gs_tty_driver->driver_name = "g_serial"; + gs_tty_driver->name = PREFIX; + /* uses dynamically assigned dev_t values */ + + gs_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; + gs_tty_driver->subtype = SERIAL_TYPE_NORMAL; + gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + gs_tty_driver->init_termios = tty_std_termios; + + /* 9600-8-N-1 ... matches defaults expected by "usbser.sys" on + * MS-Windows. Otherwise, most of these flags shouldn't affect + * anything unless we were to actually hook up to a serial line. + */ + gs_tty_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + gs_tty_driver->init_termios.c_ispeed = 9600; + gs_tty_driver->init_termios.c_ospeed = 9600; + + tty_set_operations(gs_tty_driver, &gs_tty_ops); + for (i = 0; i < MAX_U_SERIAL_PORTS; i++) + mutex_init(&ports[i].lock); + + /* export the driver ... */ + status = tty_register_driver(gs_tty_driver); + if (status) { + pr_err("%s: cannot register, err %d\n", + __func__, status); + goto fail; + } + + pr_debug("%s: registered %d ttyGS* device%s\n", __func__, + MAX_U_SERIAL_PORTS, + (MAX_U_SERIAL_PORTS == 1) ? "" : "s"); + + return status; +fail: + put_tty_driver(gs_tty_driver); + gs_tty_driver = NULL; + return status; +} +module_init(userial_init); + +static void userial_cleanup(void) +{ + tty_unregister_driver(gs_tty_driver); + put_tty_driver(gs_tty_driver); + gs_tty_driver = NULL; +} +module_exit(userial_cleanup); + MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/u_serial.h b/drivers/usb/gadget/u_serial.h index 9b0fe6450fbf..f06ee9a5db51 100644 --- a/drivers/usb/gadget/u_serial.h +++ b/drivers/usb/gadget/u_serial.h @@ -15,6 +15,8 @@ #include #include +#define MAX_U_SERIAL_PORTS 4 + /* * One non-multiplexed "serial" I/O port ... there can be several of these * on any given USB peripheral device, if it provides enough endpoints. @@ -49,9 +51,9 @@ struct gserial { struct usb_request *gs_alloc_req(struct usb_ep *ep, unsigned len, gfp_t flags); void gs_free_req(struct usb_ep *, struct usb_request *req); -/* port setup/teardown is handled by gadget driver */ -int gserial_setup(struct usb_gadget *g, unsigned n_ports); -void gserial_cleanup(void); +/* management of individual TTY ports */ +int gserial_alloc_line(unsigned char *port_line); +void gserial_free_line(unsigned char port_line); /* connect/disconnect is handled by individual functions */ int gserial_connect(struct gserial *, u8 port_num); -- cgit v1.2.3 From ff47f59467388104d369a441aa6996d257343775 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:07 +0100 Subject: usb: gadget: f_acm: convert to new function interface with backwards compatibility This patch converts f_acm into a module which uses the new function interface. It also converts one of its users that is g_serial to make use of it. The other users of it (g_nokia for instance) are still using the old include file system and should not notice the change at all. So they can be converter later independently. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/Kconfig | 4 ++ drivers/usb/gadget/Makefile | 1 + drivers/usb/gadget/acm_ms.c | 2 +- drivers/usb/gadget/cdc2.c | 2 +- drivers/usb/gadget/f_acm.c | 141 ++++++++++++++++++++++++++++++++---------- drivers/usb/gadget/multi.c | 2 +- drivers/usb/gadget/nokia.c | 1 + drivers/usb/gadget/serial.c | 83 +++++++++++++++++++------ drivers/usb/gadget/u_serial.h | 5 ++ 9 files changed, 186 insertions(+), 55 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 8aefbbddf2a7..b61c72fc305a 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -500,6 +500,9 @@ config USB_LIBCOMPOSITE tristate depends on USB_GADGET +config USB_F_ACM + tristate + config USB_F_SS_LB tristate @@ -758,6 +761,7 @@ config USB_GADGET_TARGET config USB_G_SERIAL tristate "Serial Gadget (with CDC ACM and CDC OBEX support)" select USB_U_SERIAL + select USB_F_ACM select USB_LIBCOMPOSITE help The Serial Gadget talks to the Linux-USB generic serial driver. diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index b88ee775de6b..97a13c349cc5 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -76,6 +76,7 @@ obj-$(CONFIG_USB_G_ACM_MS) += g_acm_ms.o obj-$(CONFIG_USB_GADGET_TARGET) += tcm_usb_gadget.o # USB Functions +obj-$(CONFIG_USB_F_ACM) += f_acm.o f_ss_lb-y := f_loopback.o f_sourcesink.o obj-$(CONFIG_USB_F_SS_LB) += f_ss_lb.o obj-$(CONFIG_USB_U_SERIAL) += u_serial.o diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c index eb0fbdae5ccb..4105a06582f8 100644 --- a/drivers/usb/gadget/acm_ms.c +++ b/drivers/usb/gadget/acm_ms.c @@ -40,7 +40,7 @@ * the runtime footprint, and giving us at least some parts of what * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ - +#define USB_FACM_INCLUDED #include "f_acm.c" #include "f_mass_storage.c" diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c index 16911a5aeb03..13b17f0b2da1 100644 --- a/drivers/usb/gadget/cdc2.c +++ b/drivers/usb/gadget/cdc2.c @@ -42,7 +42,7 @@ USB_GADGET_COMPOSITE_OPTIONS(); * the runtime footprint, and giving us at least some parts of what * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ - +#define USB_FACM_INCLUDED #include "f_acm.c" #include "f_ecm.c" #include "u_ether.c" diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c index 3178fa70916e..3ea7dc89b43d 100644 --- a/drivers/usb/gadget/f_acm.c +++ b/drivers/usb/gadget/f_acm.c @@ -16,7 +16,9 @@ #include #include +#include #include +#include #include "u_serial.h" #include "gadget_chips.h" @@ -608,6 +610,22 @@ acm_bind(struct usb_configuration *c, struct usb_function *f) int status; struct usb_ep *ep; + /* REVISIT might want instance-specific strings to help + * distinguish instances ... + */ + + /* maybe allocate device-global string IDs, and patch descriptors */ + if (acm_string_defs[0].id == 0) { + status = usb_string_ids_tab(c->cdev, acm_string_defs); + if (status < 0) + return status; + acm_control_interface_desc.iInterface = + acm_string_defs[ACM_CTRL_IDX].id; + acm_data_interface_desc.iInterface = + acm_string_defs[ACM_DATA_IDX].id; + acm_iad_descriptor.iFunction = acm_string_defs[ACM_IAD_IDX].id; + } + /* allocate instance-specific interface IDs, and patch descriptors */ status = usb_interface_id(c, f); if (status < 0) @@ -700,14 +718,41 @@ fail: return status; } +static struct f_acm *acm_alloc_basic_func(void) +{ + struct f_acm *acm; + + acm = kzalloc(sizeof(*acm), GFP_KERNEL); + if (!acm) + return NULL; + + spin_lock_init(&acm->lock); + + acm->port.connect = acm_connect; + acm->port.disconnect = acm_disconnect; + acm->port.send_break = acm_send_break; + + acm->port.func.name = "acm"; + acm->port.func.strings = acm_strings; + /* descriptors are per-instance copies */ + acm->port.func.bind = acm_bind; + acm->port.func.set_alt = acm_set_alt; + acm->port.func.setup = acm_setup; + acm->port.func.disable = acm_disable; + + return acm; +} + +#ifdef USB_FACM_INCLUDED static void -acm_unbind(struct usb_configuration *c, struct usb_function *f) +acm_old_unbind(struct usb_configuration *c, struct usb_function *f) { struct f_acm *acm = func_to_acm(f); acm_string_defs[0].id = 0; usb_free_all_descriptors(f); - gs_free_req(acm->notify, acm->notify_req); + if (acm->notify_req) + gs_free_req(acm->notify, acm->notify_req); kfree(acm); } @@ -725,46 +770,74 @@ int acm_bind_config(struct usb_configuration *c, u8 port_num) struct f_acm *acm; int status; - /* REVISIT might want instance-specific strings to help - * distinguish instances ... - */ - - /* maybe allocate device-global string IDs, and patch descriptors */ - if (acm_string_defs[0].id == 0) { - status = usb_string_ids_tab(c->cdev, acm_string_defs); - if (status < 0) - return status; - acm_control_interface_desc.iInterface = - acm_string_defs[ACM_CTRL_IDX].id; - acm_data_interface_desc.iInterface = - acm_string_defs[ACM_DATA_IDX].id; - acm_iad_descriptor.iFunction = acm_string_defs[ACM_IAD_IDX].id; - } - /* allocate and initialize one new instance */ - acm = kzalloc(sizeof *acm, GFP_KERNEL); + acm = acm_alloc_basic_func(); if (!acm) return -ENOMEM; - spin_lock_init(&acm->lock); - acm->port_num = port_num; - - acm->port.connect = acm_connect; - acm->port.disconnect = acm_disconnect; - acm->port.send_break = acm_send_break; - - acm->port.func.name = "acm"; - acm->port.func.strings = acm_strings; - /* descriptors are per-instance copies */ - acm->port.func.bind = acm_bind; - acm->port.func.unbind = acm_unbind; - acm->port.func.set_alt = acm_set_alt; - acm->port.func.setup = acm_setup; - acm->port.func.disable = acm_disable; + acm->port.func.unbind = acm_old_unbind; status = usb_add_function(c, &acm->port.func); if (status) kfree(acm); return status; } + +#else + +static void acm_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_acm *acm = func_to_acm(f); + + acm_string_defs[0].id = 0; + usb_free_all_descriptors(f); + if (acm->notify_req) + gs_free_req(acm->notify, acm->notify_req); +} + +static void acm_free_func(struct usb_function *f) +{ + struct f_acm *acm = func_to_acm(f); + + kfree(acm); +} + +static struct usb_function *acm_alloc_func(struct usb_function_instance *fi) +{ + struct f_serial_opts *opts; + struct f_acm *acm; + + acm = acm_alloc_basic_func(); + if (!acm) + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_serial_opts, func_inst); + acm->port_num = opts->port_num; + acm->port.func.unbind = acm_unbind; + acm->port.func.free_func = acm_free_func; + + return &acm->port.func; +} + +static void acm_free_instance(struct usb_function_instance *fi) +{ + struct f_serial_opts *opts; + + opts = container_of(fi, struct f_serial_opts, func_inst); + kfree(opts); +} + +static struct usb_function_instance *acm_alloc_instance(void) +{ + struct f_serial_opts *opts; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + opts->func_inst.free_func_inst = acm_free_instance; + return &opts->func_inst; +} +DECLARE_USB_FUNCTION_INIT(acm, acm_alloc_instance, acm_alloc_func); +MODULE_LICENSE("GPL"); +#endif diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c index 9ca0ac0334e7..24b0f5630d44 100644 --- a/drivers/usb/gadget/multi.c +++ b/drivers/usb/gadget/multi.c @@ -41,7 +41,7 @@ MODULE_LICENSE("GPL"); * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ #include "f_mass_storage.c" - +#define USB_FACM_INCLUDED #include "f_acm.c" #include "f_ecm.c" diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c index 084d0d7cb8fa..def37403989a 100644 --- a/drivers/usb/gadget/nokia.c +++ b/drivers/usb/gadget/nokia.c @@ -37,6 +37,7 @@ * the runtime footprint, and giving us at least some parts of what * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ +#define USB_FACM_INCLUDED #include "f_acm.c" #include "f_ecm.c" #include "f_obex.c" diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c index a883562f6a89..68d7bb06ebcb 100644 --- a/drivers/usb/gadget/serial.c +++ b/drivers/usb/gadget/serial.c @@ -36,7 +36,6 @@ * the runtime footprint, and giving us at least some parts of what * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ -#include "f_acm.c" #include "f_obex.c" #include "f_serial.c" @@ -129,16 +128,6 @@ MODULE_PARM_DESC(n_ports, "number of ports to create, default=1"); /*-------------------------------------------------------------------------*/ static unsigned char tty_lines[MAX_U_SERIAL_PORTS]; -static int __init serial_bind_acm_config(struct usb_configuration *c) -{ - unsigned i; - int status = 0; - - for (i = 0; i < n_ports && status == 0; i++) - status = acm_bind_config(c, tty_lines[i]); - return status; -} - static int __init serial_bind_obex_config(struct usb_configuration *c) { unsigned i; @@ -166,13 +155,58 @@ static struct usb_configuration serial_config_driver = { .bmAttributes = USB_CONFIG_ATT_SELFPOWER, }; -static int gs_unbind(struct usb_composite_dev *cdev) +static struct usb_function_instance *fi_serial[MAX_U_SERIAL_PORTS]; +static struct usb_function *f_serial[MAX_U_SERIAL_PORTS]; + +static int serial_register_ports(struct usb_composite_dev *cdev, + struct usb_configuration *c, const char *f_name) { int i; + int ret; + + ret = usb_add_config_only(cdev, c); + if (ret) + goto out; + + for (i = 0; i < n_ports; i++) { + struct f_serial_opts *opts; + + fi_serial[i] = usb_get_function_instance(f_name); + if (IS_ERR(fi_serial[i])) { + ret = PTR_ERR(fi_serial[i]); + goto fail; + } + opts = container_of(fi_serial[i], struct f_serial_opts, func_inst); + opts->port_num = tty_lines[i]; + + f_serial[i] = usb_get_function(fi_serial[i]); + if (IS_ERR(f_serial[i])) { + ret = PTR_ERR(f_serial[i]); + goto err_get_func; + } + + ret = usb_add_function(c, f_serial[i]); + if (ret) + goto err_add_func; + } - for (i = 0; i < n_ports; i++) - gserial_free_line(tty_lines[i]); return 0; + +err_add_func: + usb_put_function(f_serial[i]); +err_get_func: + usb_put_function_instance(fi_serial[i]); + +fail: + i--; + while (i >= 0) { + usb_remove_function(c, f_serial[i]); + usb_put_function(f_serial[i]); + usb_put_function_instance(fi_serial[i]); + i--; + } +out: + return ret; } static int __init gs_bind(struct usb_composite_dev *cdev) @@ -204,10 +238,11 @@ static int __init gs_bind(struct usb_composite_dev *cdev) } /* register our configuration */ - if (use_acm) - status = usb_add_config(cdev, &serial_config_driver, - serial_bind_acm_config); - else if (use_obex) + if (use_acm) { + status = serial_register_ports(cdev, &serial_config_driver, + "acm"); + usb_ep_autoconfig_reset(cdev->gadget); + } else if (use_obex) status = usb_add_config(cdev, &serial_config_driver, serial_bind_obex_config); else @@ -228,6 +263,18 @@ fail: return status; } +static int gs_unbind(struct usb_composite_dev *cdev) +{ + int i; + + for (i = 0; i < n_ports; i++) { + usb_put_function(f_serial[i]); + usb_put_function_instance(fi_serial[i]); + gserial_free_line(tty_lines[i]); + } + return 0; +} + static __refdata struct usb_composite_driver gserial_driver = { .name = "g_serial", .dev = &device_desc, diff --git a/drivers/usb/gadget/u_serial.h b/drivers/usb/gadget/u_serial.h index f06ee9a5db51..66ce73a00509 100644 --- a/drivers/usb/gadget/u_serial.h +++ b/drivers/usb/gadget/u_serial.h @@ -17,6 +17,11 @@ #define MAX_U_SERIAL_PORTS 4 +struct f_serial_opts { + struct usb_function_instance func_inst; + u8 port_num; +}; + /* * One non-multiplexed "serial" I/O port ... there can be several of these * on any given USB peripheral device, if it provides enough endpoints. -- cgit v1.2.3 From 5f72bbfd9f427565c85e71a63d47b3448e79a466 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:08 +0100 Subject: usb: gadget: acm_ms: use function framework for ACM This patch converts the acm_ms gadget to make use of the function framework to request the ACM function. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/Kconfig | 1 + drivers/usb/gadget/acm_ms.c | 33 +++++++++++++++++++++++++++------ 2 files changed, 28 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index b61c72fc305a..8dad2ce8521f 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -844,6 +844,7 @@ config USB_G_ACM_MS depends on BLOCK select USB_LIBCOMPOSITE select USB_U_SERIAL + select USB_F_ACM help This driver provides two functions in one configuration: a mass storage, and a CDC ACM (serial port) link. diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c index 4105a06582f8..8f2b0e391534 100644 --- a/drivers/usb/gadget/acm_ms.c +++ b/drivers/usb/gadget/acm_ms.c @@ -40,8 +40,6 @@ * the runtime footprint, and giving us at least some parts of what * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ -#define USB_FACM_INCLUDED -#include "f_acm.c" #include "f_mass_storage.c" /*-------------------------------------------------------------------------*/ @@ -112,12 +110,14 @@ static struct fsg_common fsg_common; /*-------------------------------------------------------------------------*/ static unsigned char tty_line; - +static struct usb_function *f_acm; +static struct usb_function_instance *f_acm_inst; /* * We _always_ have both ACM and mass storage functions. */ static int __init acm_ms_do_config(struct usb_configuration *c) { + struct f_serial_opts *opts; int status; if (gadget_is_otg(c->cdev->gadget)) { @@ -125,16 +125,35 @@ static int __init acm_ms_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } + f_acm_inst = usb_get_function_instance("acm"); + if (IS_ERR(f_acm_inst)) + return PTR_ERR(f_acm_inst); + + opts = container_of(f_acm_inst, struct f_serial_opts, func_inst); + opts->port_num = tty_line; + + f_acm = usb_get_function(f_acm_inst); + if (IS_ERR(f_acm)) { + status = PTR_ERR(f_acm); + goto err_func; + } - status = acm_bind_config(c, tty_line); + status = usb_add_function(c, f_acm); if (status < 0) - return status; + goto err_conf; status = fsg_bind_config(c->cdev, c, &fsg_common); if (status < 0) - return status; + goto err_fsg; return 0; +err_fsg: + usb_remove_function(c, f_acm); +err_conf: + usb_put_function(f_acm); +err_func: + usb_put_function_instance(f_acm_inst); + return status; } static struct usb_configuration acm_ms_config_driver = { @@ -195,6 +214,8 @@ fail0: static int __exit acm_ms_unbind(struct usb_composite_dev *cdev) { + usb_put_function(f_acm); + usb_put_function_instance(f_acm_inst); gserial_free_line(tty_line); return 0; } -- cgit v1.2.3 From 29a6645f7c0a7f1ff09d45e820f0433bd5a5610f Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:09 +0100 Subject: usb: gadget: cdc2: use function framework for ACM This patch converts the acm_ms gadget to make use of the function framework to request the ACM function. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/Kconfig | 1 + drivers/usb/gadget/cdc2.c | 28 +++++++++++++++++++++++----- 2 files changed, 24 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 8dad2ce8521f..dfe3e2d66f91 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -816,6 +816,7 @@ config USB_CDC_COMPOSITE depends on NET select USB_LIBCOMPOSITE select USB_U_SERIAL + select USB_F_ACM help This driver provides two functions in one configuration: a CDC Ethernet (ECM) link, and a CDC ACM (serial port) link. diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c index 13b17f0b2da1..a7d6f7026757 100644 --- a/drivers/usb/gadget/cdc2.c +++ b/drivers/usb/gadget/cdc2.c @@ -42,8 +42,6 @@ USB_GADGET_COMPOSITE_OPTIONS(); * the runtime footprint, and giving us at least some parts of what * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ -#define USB_FACM_INCLUDED -#include "f_acm.c" #include "f_ecm.c" #include "u_ether.c" @@ -107,6 +105,8 @@ static struct usb_gadget_strings *dev_strings[] = { static u8 hostaddr[ETH_ALEN]; /*-------------------------------------------------------------------------*/ +static struct usb_function *f_acm; +static struct usb_function_instance *fi_serial; static unsigned char tty_line; /* @@ -114,6 +114,7 @@ static unsigned char tty_line; */ static int __init cdc_do_config(struct usb_configuration *c) { + struct f_serial_opts *opts; int status; if (gadget_is_otg(c->cdev->gadget)) { @@ -125,11 +126,26 @@ static int __init cdc_do_config(struct usb_configuration *c) if (status < 0) return status; - status = acm_bind_config(c, tty_line); - if (status < 0) - return status; + fi_serial = usb_get_function_instance("acm"); + if (IS_ERR(fi_serial)) + return PTR_ERR(fi_serial); + + opts = container_of(fi_serial, struct f_serial_opts, func_inst); + opts->port_num = tty_line; + f_acm = usb_get_function(fi_serial); + if (IS_ERR(f_acm)) + goto err_func_acm; + + status = usb_add_function(c, f_acm); + if (status) + goto err_conf; return 0; +err_conf: + usb_put_function(f_acm); +err_func_acm: + usb_put_function_instance(fi_serial); + return status; } static struct usb_configuration cdc_config_driver = { @@ -192,6 +208,8 @@ fail0: static int __exit cdc_unbind(struct usb_composite_dev *cdev) { + usb_put_function(f_acm); + usb_put_function_instance(fi_serial); gserial_free_line(tty_line); gether_cleanup(); return 0; -- cgit v1.2.3 From 59835ad727876f6ce5c18ce075e144a8fa989461 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:10 +0100 Subject: usb: gadget: multi: use function framework for ACM This patch converts the acm_ms gadget to make use of the function framework to request the ACM function. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/Kconfig | 1 + drivers/usb/gadget/multi.c | 62 ++++++++++++++++++++++++++++++++++++++-------- 2 files changed, 53 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index dfe3e2d66f91..6665d255d32a 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -859,6 +859,7 @@ config USB_G_MULTI select USB_G_MULTI_CDC if !USB_G_MULTI_RNDIS select USB_LIBCOMPOSITE select USB_U_SERIAL + select USB_F_ACM help The Multifunction Composite Gadget provides Ethernet (RNDIS and/or CDC Ethernet), mass storage and ACM serial link diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c index 24b0f5630d44..20bbbf917fc2 100644 --- a/drivers/usb/gadget/multi.c +++ b/drivers/usb/gadget/multi.c @@ -16,6 +16,7 @@ #include #include +#include "u_serial.h" #if defined USB_ETH_RNDIS # undef USB_ETH_RNDIS #endif @@ -41,8 +42,6 @@ MODULE_LICENSE("GPL"); * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ #include "f_mass_storage.c" -#define USB_FACM_INCLUDED -#include "f_acm.c" #include "f_ecm.c" #include "f_subset.c" @@ -137,10 +136,12 @@ static struct fsg_common fsg_common; static u8 hostaddr[ETH_ALEN]; static unsigned char tty_line; +static struct usb_function_instance *fi_acm; /********** RNDIS **********/ #ifdef USB_ETH_RNDIS +static struct usb_function *f_acm_rndis; static __init int rndis_do_config(struct usb_configuration *c) { @@ -155,15 +156,25 @@ static __init int rndis_do_config(struct usb_configuration *c) if (ret < 0) return ret; - ret = acm_bind_config(c, tty_line); - if (ret < 0) - return ret; + f_acm_rndis = usb_get_function(fi_acm); + if (IS_ERR(f_acm_rndis)) + goto err_func_acm; + + ret = usb_add_function(c, f_acm_rndis); + if (ret) + goto err_conf; ret = fsg_bind_config(c->cdev, c, &fsg_common); if (ret < 0) - return ret; + goto err_fsg; return 0; +err_fsg: + usb_remove_function(c, f_acm_rndis); +err_conf: + usb_put_function(f_acm_rndis); +err_func_acm: + return ret; } static int rndis_config_register(struct usb_composite_dev *cdev) @@ -192,6 +203,7 @@ static int rndis_config_register(struct usb_composite_dev *cdev) /********** CDC ECM **********/ #ifdef CONFIG_USB_G_MULTI_CDC +static struct usb_function *f_acm_multi; static __init int cdc_do_config(struct usb_configuration *c) { @@ -206,15 +218,26 @@ static __init int cdc_do_config(struct usb_configuration *c) if (ret < 0) return ret; - ret = acm_bind_config(c, tty_line); - if (ret < 0) - return ret; + /* implicit port_num is zero */ + f_acm_multi = usb_get_function(fi_acm); + if (IS_ERR(f_acm_multi)) + goto err_func_acm; + + ret = usb_add_function(c, f_acm_multi); + if (ret) + goto err_conf; ret = fsg_bind_config(c->cdev, c, &fsg_common); if (ret < 0) - return ret; + goto err_fsg; return 0; +err_fsg: + usb_remove_function(c, f_acm_multi); +err_conf: + usb_put_function(f_acm_multi); +err_func_acm: + return ret; } static int cdc_config_register(struct usb_composite_dev *cdev) @@ -246,6 +269,7 @@ static int cdc_config_register(struct usb_composite_dev *cdev) static int __ref multi_bind(struct usb_composite_dev *cdev) { struct usb_gadget *gadget = cdev->gadget; + struct f_serial_opts *opts; int status; if (!can_support_ecm(cdev->gadget)) { @@ -264,6 +288,15 @@ static int __ref multi_bind(struct usb_composite_dev *cdev) if (status < 0) goto fail0; + fi_acm = usb_get_function_instance("acm"); + if (IS_ERR(fi_acm)) { + status = PTR_ERR(fi_acm); + goto fail0dot5; + } + + opts = container_of(fi_acm, struct f_serial_opts, func_inst); + opts->port_num = tty_line; + /* set up mass storage function */ { void *retp; @@ -300,6 +333,8 @@ static int __ref multi_bind(struct usb_composite_dev *cdev) fail2: fsg_common_put(&fsg_common); fail1: + usb_put_function_instance(fi_acm); +fail0dot5: gserial_free_line(tty_line); fail0: gether_cleanup(); @@ -308,6 +343,13 @@ fail0: static int __exit multi_unbind(struct usb_composite_dev *cdev) { +#ifdef CONFIG_USB_G_MULTI_CDC + usb_put_function(f_acm_multi); +#endif +#ifdef USB_ETH_RNDIS + usb_put_function(f_acm_rndis); +#endif + usb_put_function_instance(fi_acm); gserial_free_line(tty_line); gether_cleanup(); return 0; -- cgit v1.2.3 From 0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:15 +0100 Subject: usb: gadget: add a forward pointer from usb_function to its "instance" We can have multiple usb_functions which origin is the same "instance". Within one USB configuration there should be only one function of an instance. This back pointer helps configfs to recoginze to which instance a given usb_function belongs. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/functions.c | 116 +++++++++++++++++++++++++++++++++++++++++ include/linux/usb/composite.h | 1 + 2 files changed, 117 insertions(+) create mode 100644 drivers/usb/gadget/functions.c (limited to 'drivers') diff --git a/drivers/usb/gadget/functions.c b/drivers/usb/gadget/functions.c new file mode 100644 index 000000000000..b13f839e7368 --- /dev/null +++ b/drivers/usb/gadget/functions.c @@ -0,0 +1,116 @@ +#include +#include +#include +#include + +#include + +static LIST_HEAD(func_list); +static DEFINE_MUTEX(func_lock); + +static struct usb_function_instance *try_get_usb_function_instance(const char *name) +{ + struct usb_function_driver *fd; + struct usb_function_instance *fi; + + fi = ERR_PTR(-ENOENT); + mutex_lock(&func_lock); + list_for_each_entry(fd, &func_list, list) { + + if (strcmp(name, fd->name)) + continue; + + if (!try_module_get(fd->mod)) { + fi = ERR_PTR(-EBUSY); + break; + } + fi = fd->alloc_inst(); + if (IS_ERR(fi)) + module_put(fd->mod); + else + fi->fd = fd; + break; + } + mutex_unlock(&func_lock); + return fi; +} + +struct usb_function_instance *usb_get_function_instance(const char *name) +{ + struct usb_function_instance *fi; + int ret; + + fi = try_get_usb_function_instance(name); + if (!IS_ERR(fi)) + return fi; + ret = PTR_ERR(fi); + if (ret != -ENOENT) + return fi; + ret = request_module("usbfunc:%s", name); + if (ret < 0) + return ERR_PTR(ret); + return try_get_usb_function_instance(name); +} +EXPORT_SYMBOL_GPL(usb_get_function_instance); + +struct usb_function *usb_get_function(struct usb_function_instance *fi) +{ + struct usb_function *f; + + f = fi->fd->alloc_func(fi); + if (IS_ERR(f)) + return f; + f->fi = fi; + return f; +} +EXPORT_SYMBOL_GPL(usb_get_function); + +void usb_put_function_instance(struct usb_function_instance *fi) +{ + struct module *mod; + + if (!fi) + return; + + mod = fi->fd->mod; + fi->free_func_inst(fi); + module_put(mod); +} +EXPORT_SYMBOL_GPL(usb_put_function_instance); + +void usb_put_function(struct usb_function *f) +{ + if (!f) + return; + + f->free_func(f); +} +EXPORT_SYMBOL_GPL(usb_put_function); + +int usb_function_register(struct usb_function_driver *newf) +{ + struct usb_function_driver *fd; + int ret; + + ret = -EEXIST; + + mutex_lock(&func_lock); + list_for_each_entry(fd, &func_list, list) { + if (!strcmp(fd->name, newf->name)) + goto out; + } + ret = 0; + list_add_tail(&newf->list, &func_list); +out: + mutex_unlock(&func_lock); + return ret; +} +EXPORT_SYMBOL_GPL(usb_function_register); + +void usb_function_unregister(struct usb_function_driver *fd) +{ + mutex_lock(&func_lock); + list_del(&fd->list); + mutex_unlock(&func_lock); +} +EXPORT_SYMBOL_GPL(usb_function_unregister); diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 8c7a6295ae78..771de7acf8dd 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -161,6 +161,7 @@ struct usb_function { /* internals */ struct list_head list; DECLARE_BITMAP(endpoints, 32); + const struct usb_function_instance *fi; }; int usb_add_function(struct usb_configuration *, struct usb_function *); -- cgit v1.2.3 From 4c49a5f0ef1bc61395329ea7a9fce2893e97eaa6 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:19 +0100 Subject: usb: gadget: udc-core: introduce UDC binding by name This patch adds udc_attach_driver() which allows to bind an UDC which is specified by name to a driver. The name of available UDCs can be obtained from /sys/class/udc. This interface is intended for configfs interface. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc-core.c | 72 ++++++++++++++++++++++++++++++------------- include/linux/usb/gadget.h | 2 ++ 2 files changed, 53 insertions(+), 21 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c index 4d90a800063c..e7c591621a3b 100644 --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -311,26 +311,10 @@ EXPORT_SYMBOL_GPL(usb_del_gadget_udc); /* ------------------------------------------------------------------------- */ -int usb_gadget_probe_driver(struct usb_gadget_driver *driver) +static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *driver) { - struct usb_udc *udc = NULL; - int ret; - - if (!driver || !driver->bind || !driver->setup) - return -EINVAL; + int ret; - mutex_lock(&udc_lock); - list_for_each_entry(udc, &udc_list, list) { - /* For now we take the first one */ - if (!udc->driver) - goto found; - } - - pr_debug("couldn't find an available UDC\n"); - mutex_unlock(&udc_lock); - return -ENODEV; - -found: dev_dbg(&udc->dev, "registering UDC driver [%s]\n", driver->function); @@ -352,18 +336,64 @@ found: ret = usb_gadget_start(udc->gadget, driver, driver->bind); if (ret) goto err1; - } kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE); - mutex_unlock(&udc_lock); return 0; - err1: dev_err(&udc->dev, "failed to start %s: %d\n", udc->driver->function, ret); udc->driver = NULL; udc->dev.driver = NULL; + return ret; +} + +int udc_attach_driver(const char *name, struct usb_gadget_driver *driver) +{ + struct usb_udc *udc = NULL; + int ret = -ENODEV; + + mutex_lock(&udc_lock); + list_for_each_entry(udc, &udc_list, list) { + ret = strcmp(name, dev_name(&udc->dev)); + if (!ret) + break; + } + if (ret) { + ret = -ENODEV; + goto out; + } + if (udc->driver) { + ret = -EBUSY; + goto out; + } + ret = udc_bind_to_driver(udc, driver); +out: + mutex_unlock(&udc_lock); + return ret; +} +EXPORT_SYMBOL_GPL(udc_attach_driver); + +int usb_gadget_probe_driver(struct usb_gadget_driver *driver) +{ + struct usb_udc *udc = NULL; + int ret; + + if (!driver || !driver->bind || !driver->setup) + return -EINVAL; + + mutex_lock(&udc_lock); + list_for_each_entry(udc, &udc_list, list) { + /* For now we take the first one */ + if (!udc->driver) + goto found; + } + + pr_debug("couldn't find an available UDC\n"); + mutex_unlock(&udc_lock); + return -ENODEV; +found: + ret = udc_bind_to_driver(udc, driver); mutex_unlock(&udc_lock); return ret; } diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 0af6569b8cc6..62156701e4f1 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -880,6 +880,8 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver); extern int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget); extern void usb_del_gadget_udc(struct usb_gadget *gadget); +extern int udc_attach_driver(const char *name, + struct usb_gadget_driver *driver); /*-------------------------------------------------------------------------*/ -- cgit v1.2.3 From a59233407aed54b8a9121cea75d9c6a2a470d8d3 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:20 +0100 Subject: usb: gadget: factor out two helper functions from composite_bind() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch factors out two helper functions from composite_bind() that is composite_dev_prepare() and its counterpart composite_dev_cleanup(). This will be used by the configfs which requries a slightly different bind/setup code because part of its configurations (i.e. config descripts, cdev, …) are setup in advance and VID/PID and so one should not be overwritten. Also the setup of ep0 endpoint can be delayed until the UDC is assigned. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 82 ++++++++++++++++++++++++++---------------- include/linux/usb/composite.h | 8 +++++ 2 files changed, 59 insertions(+), 31 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 366facccf4f6..9083ec93f38e 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1394,11 +1394,8 @@ static void __composite_unbind(struct usb_gadget *gadget, bool unbind_driver) if (cdev->driver->unbind && unbind_driver) cdev->driver->unbind(cdev); - if (cdev->req) { - kfree(cdev->req->buf); - usb_ep_free_request(gadget->ep0, cdev->req); - } - device_remove_file(&gadget->dev, &dev_attr_suspended); + composite_dev_cleanup(cdev); + kfree(cdev->def_manufacturer); kfree(cdev); set_gadget_data(gadget, NULL); @@ -1447,34 +1444,25 @@ static void update_unchanged_dev_desc(struct usb_device_descriptor *new, new->iProduct = iProduct; } -static struct usb_composite_driver *to_cdriver(struct usb_gadget_driver *gdrv) +int composite_dev_prepare(struct usb_composite_driver *composite, + struct usb_composite_dev *cdev) { - return container_of(gdrv, struct usb_composite_driver, gadget_driver); -} - -static int composite_bind(struct usb_gadget *gadget, - struct usb_gadget_driver *gdriver) -{ - struct usb_composite_dev *cdev; - struct usb_composite_driver *composite = to_cdriver(gdriver); - int status = -ENOMEM; - - cdev = kzalloc(sizeof *cdev, GFP_KERNEL); - if (!cdev) - return status; - - spin_lock_init(&cdev->lock); - cdev->gadget = gadget; - set_gadget_data(gadget, cdev); - INIT_LIST_HEAD(&cdev->configs); + struct usb_gadget *gadget = cdev->gadget; + int ret = -ENOMEM; /* preallocate control response and buffer */ cdev->req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL); if (!cdev->req) - goto fail; + return -ENOMEM; + cdev->req->buf = kmalloc(USB_COMP_EP0_BUFSIZ, GFP_KERNEL); if (!cdev->req->buf) goto fail; + + ret = device_create_file(&gadget->dev, &dev_attr_suspended); + if (ret) + goto fail_dev; + cdev->req->complete = composite_setup_complete; gadget->ep0->driver_data = cdev; @@ -1492,7 +1480,44 @@ static int composite_bind(struct usb_gadget *gadget, * we force endpoints to start unassigned; few controller * drivers will zero ep->driver_data. */ - usb_ep_autoconfig_reset(cdev->gadget); + usb_ep_autoconfig_reset(gadget); + return 0; +fail_dev: + kfree(cdev->req->buf); +fail: + usb_ep_free_request(gadget->ep0, cdev->req); + cdev->req = NULL; + return ret; +} + +void composite_dev_cleanup(struct usb_composite_dev *cdev) +{ + if (cdev->req) { + kfree(cdev->req->buf); + usb_ep_free_request(cdev->gadget->ep0, cdev->req); + } + device_remove_file(&cdev->gadget->dev, &dev_attr_suspended); +} + +static int composite_bind(struct usb_gadget *gadget, + struct usb_gadget_driver *gdriver) +{ + struct usb_composite_dev *cdev; + struct usb_composite_driver *composite = to_cdriver(gdriver); + int status = -ENOMEM; + + cdev = kzalloc(sizeof *cdev, GFP_KERNEL); + if (!cdev) + return status; + + spin_lock_init(&cdev->lock); + cdev->gadget = gadget; + set_gadget_data(gadget, cdev); + INIT_LIST_HEAD(&cdev->configs); + + status = composite_dev_prepare(composite, cdev); + if (status) + goto fail; /* composite gadget needs to assign strings for whole device (like * serial number), register function drivers, potentially update @@ -1508,11 +1533,6 @@ static int composite_bind(struct usb_gadget *gadget, if (composite->needs_serial && !cdev->desc.iSerialNumber) WARNING(cdev, "userspace failed to provide iSerialNumber\n"); - /* finish up */ - status = device_create_file(&gadget->dev, &dev_attr_suspended); - if (status) - goto fail; - INFO(cdev, "%s ready\n", composite->name); return 0; diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 771de7acf8dd..bd6d857c12f4 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -323,7 +323,15 @@ struct usb_composite_driver { extern int usb_composite_probe(struct usb_composite_driver *driver); extern void usb_composite_unregister(struct usb_composite_driver *driver); extern void usb_composite_setup_continue(struct usb_composite_dev *cdev); +extern int composite_dev_prepare(struct usb_composite_driver *composite, + struct usb_composite_dev *cdev); +void composite_dev_cleanup(struct usb_composite_dev *cdev); +static inline struct usb_composite_driver *to_cdriver( + struct usb_gadget_driver *gdrv) +{ + return container_of(gdrv, struct usb_composite_driver, gadget_driver); +} /** * struct usb_composite_device - represents one composite usb gadget -- cgit v1.2.3 From 2d5a88990260d226a69acddf22c04f47c267b33a Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:21 +0100 Subject: usb: gadget: export composite's setup & disconnect function The configfs can't use all of composite's hooks because ->bind() and ->unbind() has to be done a little differently. ->disconnect() and ->setup() on the hand can be recycled. This patch exports them both so configfs can use them. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 4 ++-- include/linux/usb/composite.h | 4 ++++ 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 9083ec93f38e..8a1c3752f75f 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1077,7 +1077,7 @@ static void composite_setup_complete(struct usb_ep *ep, struct usb_request *req) * housekeeping for the gadget function we're implementing. Most of * the work is in config and function specific setup. */ -static int +int composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) { struct usb_composite_dev *cdev = get_gadget_data(gadget); @@ -1344,7 +1344,7 @@ done: return value; } -static void composite_disconnect(struct usb_gadget *gadget) +void composite_disconnect(struct usb_gadget *gadget) { struct usb_composite_dev *cdev = get_gadget_data(gadget); unsigned long flags; diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index bd6d857c12f4..a212ec3e9d69 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -398,6 +398,10 @@ extern int usb_string_ids_tab(struct usb_composite_dev *c, struct usb_string *str); extern int usb_string_ids_n(struct usb_composite_dev *c, unsigned n); +extern void composite_disconnect(struct usb_gadget *gadget); +extern int composite_setup(struct usb_gadget *gadget, + const struct usb_ctrlrequest *ctrl); + /* * Some systems will need runtime overrides for the product identifiers * published in the device descriptor, either numbers or strings or both. -- cgit v1.2.3 From 9bb2859f8a8dbc9b42f3100641dd0ae80cfbe86a Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:22 +0100 Subject: usb: gadget: composite: introduce usb_gstrings_attach() The USB strings don't (yet) fully work in multiple configs/gadget environment. The string id is assigned to the descriptor and the struct usb_strings. We create a copy of the individual descriptor so we don't clash if we use a function more than once. However, we have only one struct usb_string for each string. Currently each function which is used multiple times checks for "id != 0" and only assigns string ids if it did not happen yet. This works well if we use the same function multiple times as long as we do it within the "one" gadget we have. Trouble starts once we use the same function in a second gadget. In order to solve this I introduce usb_gstrings_attach(). This function will crate a copy all structs except for the strings which are not copied. After the copy it will assign USB ids and attach it to cdev. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 135 +++++++++++++++++++++++++++++++++++++++++ include/linux/usb/composite.h | 4 ++ include/linux/usb/gadget.h | 5 ++ 3 files changed, 144 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 8a1c3752f75f..9d7a1fabc482 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -28,6 +28,12 @@ * with the relevant device-wide data. */ +static struct usb_gadget_strings **get_containers_gs( + struct usb_gadget_string_container *uc) +{ + return (struct usb_gadget_strings **)uc->stash; +} + /** * next_ep_desc() - advance to the next EP descriptor * @t: currect pointer within descriptor array @@ -904,6 +910,7 @@ static int get_string(struct usb_composite_dev *cdev, void *buf, u16 language, int id) { struct usb_composite_driver *composite = cdev->driver; + struct usb_gadget_string_container *uc; struct usb_configuration *c; struct usb_function *f; int len; @@ -946,6 +953,15 @@ static int get_string(struct usb_composite_dev *cdev, return s->bLength; } + list_for_each_entry(uc, &cdev->gstrings, list) { + struct usb_gadget_strings **sp; + + sp = get_containers_gs(uc); + len = lookup_string(sp, buf, language, id); + if (len > 0) + return len; + } + /* String IDs are device-scoped, so we look up each string * table we're told about. These lookups are infrequent; * simpler-is-better here. @@ -1031,6 +1047,119 @@ int usb_string_ids_tab(struct usb_composite_dev *cdev, struct usb_string *str) } EXPORT_SYMBOL_GPL(usb_string_ids_tab); +static struct usb_gadget_string_container *copy_gadget_strings( + struct usb_gadget_strings **sp, unsigned n_gstrings, + unsigned n_strings) +{ + struct usb_gadget_string_container *uc; + struct usb_gadget_strings **gs_array; + struct usb_gadget_strings *gs; + struct usb_string *s; + unsigned mem; + unsigned n_gs; + unsigned n_s; + void *stash; + + mem = sizeof(*uc); + mem += sizeof(void *) * (n_gstrings + 1); + mem += sizeof(struct usb_gadget_strings) * n_gstrings; + mem += sizeof(struct usb_string) * (n_strings + 1) * (n_gstrings); + uc = kmalloc(mem, GFP_KERNEL); + if (!uc) + return ERR_PTR(-ENOMEM); + gs_array = get_containers_gs(uc); + stash = uc->stash; + stash += sizeof(void *) * (n_gstrings + 1); + for (n_gs = 0; n_gs < n_gstrings; n_gs++) { + struct usb_string *org_s; + + gs_array[n_gs] = stash; + gs = gs_array[n_gs]; + stash += sizeof(struct usb_gadget_strings); + gs->language = sp[n_gs]->language; + gs->strings = stash; + org_s = sp[n_gs]->strings; + + for (n_s = 0; n_s < n_strings; n_s++) { + s = stash; + stash += sizeof(struct usb_string); + if (org_s->s) + s->s = org_s->s; + else + s->s = ""; + org_s++; + } + s = stash; + s->s = NULL; + stash += sizeof(struct usb_string); + + } + gs_array[n_gs] = NULL; + return uc; +} + +/** + * usb_gstrings_attach() - attach gadget strings to a cdev and assign ids + * @cdev: the device whose string descriptor IDs are being allocated + * and attached. + * @sp: an array of usb_gadget_strings to attach. + * @n_strings: number of entries in each usb_strings array (sp[]->strings) + * + * This function will create a deep copy of usb_gadget_strings and usb_string + * and attach it to the cdev. The actual string (usb_string.s) will not be + * copied but only a referenced will be made. The struct usb_gadget_strings + * array may contain multiple languges and should be NULL terminated. + * The ->language pointer of each struct usb_gadget_strings has to contain the + * same amount of entries. + * For instance: sp[0] is en-US, sp[1] is es-ES. It is expected that the first + * usb_string entry of es-ES containts the translation of the first usb_string + * entry of en-US. Therefore both entries become the same id assign. + */ +struct usb_string *usb_gstrings_attach(struct usb_composite_dev *cdev, + struct usb_gadget_strings **sp, unsigned n_strings) +{ + struct usb_gadget_string_container *uc; + struct usb_gadget_strings **n_gs; + unsigned n_gstrings = 0; + unsigned i; + int ret; + + for (i = 0; sp[i]; i++) + n_gstrings++; + + if (!n_gstrings) + return ERR_PTR(-EINVAL); + + uc = copy_gadget_strings(sp, n_gstrings, n_strings); + if (IS_ERR(uc)) + return ERR_PTR(PTR_ERR(uc)); + + n_gs = get_containers_gs(uc); + ret = usb_string_ids_tab(cdev, n_gs[0]->strings); + if (ret) + goto err; + + for (i = 1; i < n_gstrings; i++) { + struct usb_string *m_s; + struct usb_string *s; + unsigned n; + + m_s = n_gs[0]->strings; + s = n_gs[i]->strings; + for (n = 0; n < n_strings; n++) { + s->id = m_s->id; + s++; + m_s++; + } + } + list_add_tail(&uc->list, &cdev->gstrings); + return n_gs[0]->strings; +err: + kfree(uc); + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(usb_gstrings_attach); + /** * usb_string_ids_n() - allocate unused string IDs in batch * @c: the device whose string descriptor IDs are being allocated @@ -1377,6 +1506,7 @@ static DEVICE_ATTR(suspended, 0444, composite_show_suspended, NULL); static void __composite_unbind(struct usb_gadget *gadget, bool unbind_driver) { struct usb_composite_dev *cdev = get_gadget_data(gadget); + struct usb_gadget_string_container *uc, *tmp; /* composite_disconnect() must already have been called * by the underlying peripheral controller driver! @@ -1391,6 +1521,10 @@ static void __composite_unbind(struct usb_gadget *gadget, bool unbind_driver) struct usb_configuration, list); remove_config(cdev, c); } + list_for_each_entry_safe(uc, tmp, &cdev->gstrings, list) { + list_del(&uc->list); + kfree(uc); + } if (cdev->driver->unbind && unbind_driver) cdev->driver->unbind(cdev); @@ -1514,6 +1648,7 @@ static int composite_bind(struct usb_gadget *gadget, cdev->gadget = gadget; set_gadget_data(gadget, cdev); INIT_LIST_HEAD(&cdev->configs); + INIT_LIST_HEAD(&cdev->gstrings); status = composite_dev_prepare(composite, cdev); if (status) diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index a212ec3e9d69..3c671c1b37f6 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -375,6 +375,7 @@ struct usb_composite_dev { unsigned int suspended:1; struct usb_device_descriptor desc; struct list_head configs; + struct list_head gstrings; struct usb_composite_driver *driver; u8 next_string_id; char *def_manufacturer; @@ -396,6 +397,9 @@ struct usb_composite_dev { extern int usb_string_id(struct usb_composite_dev *c); extern int usb_string_ids_tab(struct usb_composite_dev *c, struct usb_string *str); +extern struct usb_string *usb_gstrings_attach(struct usb_composite_dev *cdev, + struct usb_gadget_strings **sp, unsigned n_strings); + extern int usb_string_ids_n(struct usb_composite_dev *c, unsigned n); extern void composite_disconnect(struct usb_gadget *gadget); diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 62156701e4f1..e4c119ee4ebe 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -913,6 +913,11 @@ struct usb_gadget_strings { struct usb_string *strings; }; +struct usb_gadget_string_container { + struct list_head list; + u8 *stash[0]; +}; + /* put descriptor for string with that id into buf (buflen >= 256) */ int usb_gadget_get_string(struct usb_gadget_strings *table, int id, u8 *buf); -- cgit v1.2.3 From 27a4663397302976869571ae7e175fc90ec22017 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 23 Dec 2012 21:10:23 +0100 Subject: usb: gadget: f_acm: use usb_gstrings_attach() Use usb_gstrings_attach() to assign strings in f_acm to assign strings ids. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 17 ++++++++++++----- drivers/usb/gadget/f_acm.c | 21 ++++++++------------- 2 files changed, 20 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 9d7a1fabc482..7c821de8ce3d 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -943,6 +943,12 @@ static int get_string(struct usb_composite_dev *cdev, collect_langs(sp, s->wData); } } + list_for_each_entry(uc, &cdev->gstrings, list) { + struct usb_gadget_strings **sp; + + sp = get_containers_gs(uc); + collect_langs(sp, s->wData); + } for (len = 0; len <= 126 && s->wData[len]; len++) continue; @@ -1506,7 +1512,6 @@ static DEVICE_ATTR(suspended, 0444, composite_show_suspended, NULL); static void __composite_unbind(struct usb_gadget *gadget, bool unbind_driver) { struct usb_composite_dev *cdev = get_gadget_data(gadget); - struct usb_gadget_string_container *uc, *tmp; /* composite_disconnect() must already have been called * by the underlying peripheral controller driver! @@ -1521,10 +1526,6 @@ static void __composite_unbind(struct usb_gadget *gadget, bool unbind_driver) struct usb_configuration, list); remove_config(cdev, c); } - list_for_each_entry_safe(uc, tmp, &cdev->gstrings, list) { - list_del(&uc->list); - kfree(uc); - } if (cdev->driver->unbind && unbind_driver) cdev->driver->unbind(cdev); @@ -1626,6 +1627,12 @@ fail: void composite_dev_cleanup(struct usb_composite_dev *cdev) { + struct usb_gadget_string_container *uc, *tmp; + + list_for_each_entry_safe(uc, tmp, &cdev->gstrings, list) { + list_del(&uc->list); + kfree(uc); + } if (cdev->req) { kfree(cdev->req->buf); usb_ep_free_request(cdev->gadget->ep0, cdev->req); diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c index 3ea7dc89b43d..1ae180baa597 100644 --- a/drivers/usb/gadget/f_acm.c +++ b/drivers/usb/gadget/f_acm.c @@ -285,7 +285,6 @@ static struct usb_string acm_string_defs[] = { [ACM_CTRL_IDX].s = "CDC Abstract Control Model (ACM)", [ACM_DATA_IDX].s = "CDC ACM Data", [ACM_IAD_IDX ].s = "CDC Serial", - { /* ZEROES END LIST */ }, }; static struct usb_gadget_strings acm_string_table = { @@ -607,6 +606,7 @@ acm_bind(struct usb_configuration *c, struct usb_function *f) { struct usb_composite_dev *cdev = c->cdev; struct f_acm *acm = func_to_acm(f); + struct usb_string *us; int status; struct usb_ep *ep; @@ -615,16 +615,13 @@ acm_bind(struct usb_configuration *c, struct usb_function *f) */ /* maybe allocate device-global string IDs, and patch descriptors */ - if (acm_string_defs[0].id == 0) { - status = usb_string_ids_tab(c->cdev, acm_string_defs); - if (status < 0) - return status; - acm_control_interface_desc.iInterface = - acm_string_defs[ACM_CTRL_IDX].id; - acm_data_interface_desc.iInterface = - acm_string_defs[ACM_DATA_IDX].id; - acm_iad_descriptor.iFunction = acm_string_defs[ACM_IAD_IDX].id; - } + us = usb_gstrings_attach(cdev, acm_strings, + ARRAY_SIZE(acm_string_defs)); + if (IS_ERR(us)) + return PTR_ERR(us); + acm_control_interface_desc.iInterface = us[ACM_CTRL_IDX].id; + acm_data_interface_desc.iInterface = us[ACM_DATA_IDX].id; + acm_iad_descriptor.iFunction = us[ACM_IAD_IDX].id; /* allocate instance-specific interface IDs, and patch descriptors */ status = usb_interface_id(c, f); @@ -733,7 +730,6 @@ static struct f_acm *acm_alloc_basic_func(void) acm->port.send_break = acm_send_break; acm->port.func.name = "acm"; - acm->port.func.strings = acm_strings; /* descriptors are per-instance copies */ acm->port.func.bind = acm_bind; acm->port.func.set_alt = acm_set_alt; @@ -749,7 +745,6 @@ acm_old_unbind(struct usb_configuration *c, struct usb_function *f) { struct f_acm *acm = func_to_acm(f); - acm_string_defs[0].id = 0; usb_free_all_descriptors(f); if (acm->notify_req) gs_free_req(acm->notify, acm->notify_req); -- cgit v1.2.3 From a1ac29bd5d56c366e2fbefd7f9f8026e6808e4a8 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 17 Jan 2013 15:43:32 +0200 Subject: usb: gadget: f_uac2: fix compile warning this warning was introduced by previous patches, fix it. Reported-by: Fengguang Wu Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_uac2.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_uac2.c b/drivers/usb/gadget/f_uac2.c index 07fde0505e32..c7468b6c07b0 100644 --- a/drivers/usb/gadget/f_uac2.c +++ b/drivers/usb/gadget/f_uac2.c @@ -260,7 +260,6 @@ static int uac2_pcm_trigger(struct snd_pcm_substream *substream, int cmd) { struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream); - struct audio_dev *agdev = uac2_to_agdev(uac2); struct uac2_rtd_params *prm; unsigned long flags; int err = 0; -- cgit v1.2.3 From 38b3ad5655e7b2ccb68e6510a84f839d0376fe05 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 18 Jan 2013 13:18:44 +0200 Subject: usb: gadget: fix two sparse warnings drivers/usb/gadget/u_serial.c:1291:5: sparse: symbol \ 'userial_init' was not declared. Should it be static? drivers/usb/gadget/zero.c:66:25: sparse: symbol \ 'gzero_options' was not declared. Should it be static? Reported-by: Fengguang Wu Signed-off-by: Felipe Balbi --- drivers/usb/gadget/u_serial.c | 2 +- drivers/usb/gadget/zero.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c index ea360fda2e14..9e14079b6309 100644 --- a/drivers/usb/gadget/u_serial.c +++ b/drivers/usb/gadget/u_serial.c @@ -1288,7 +1288,7 @@ void gserial_disconnect(struct gserial *gser) } EXPORT_SYMBOL_GPL(gserial_disconnect); -int userial_init(void) +static int userial_init(void) { unsigned i; int status; diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c index a331ab13f1e5..685fa681cb65 100644 --- a/drivers/usb/gadget/zero.c +++ b/drivers/usb/gadget/zero.c @@ -63,7 +63,7 @@ static const char longname[] = "Gadget Zero"; static bool loopdefault = 0; module_param(loopdefault, bool, S_IRUGO|S_IWUSR); -struct usb_zero_options gzero_options = { +static struct usb_zero_options gzero_options = { .isoc_interval = 4, .isoc_maxpacket = 1024, .bulk_buflen = 4096, -- cgit v1.2.3 From 5c6e9bf011bca072648017477b0fe36402be1415 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Mon, 21 Jan 2013 14:02:46 +0100 Subject: drivers/usb/chipidea/core.c: adjust duplicate test Delete successive tests to the same location. In this case res has already been tested for being NULL, and calling devm_request_and_ioremap will not make it NULL. On the other hand, devm_request_and_ioremap can return NULL on failure. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @s exists@ local idexpression y; expression x,e; @@ *if ( \(x == NULL\|IS_ERR(x)\|y != 0\) ) { ... when forall return ...; } ... when != \(y = e\|y += e\|y -= e\|y |= e\|y &= e\|y++\|y--\|&y\) when != \(XT_GETPAGE(...,y)\|WMI_CMD_BUF(...)\) *if ( \(x == NULL\|IS_ERR(x)\|y != 0\) ) { ... when forall return ...; } // Signed-off-by: Julia Lawall Cc: Alexander Shishkin Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index aebf695a9344..57cae1f897b2 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -411,7 +411,7 @@ static int ci_hdrc_probe(struct platform_device *pdev) } base = devm_request_and_ioremap(dev, res); - if (!res) { + if (!base) { dev_err(dev, "can't request and ioremap resource\n"); return -ENOMEM; } -- cgit v1.2.3 From d2123fd9e1a56b8006986ed37e0aaf93ef0dd978 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Mon, 21 Jan 2013 22:18:00 +0800 Subject: USB: Set usb port's DeviceRemovable according acpi information ACPI provide "_PLD" and "_UPC" aml methods to describe usb port visibility and connectability. This patch is to add usb_hub_adjust_DeviceRemovable() to adjust usb hub port's DeviceRemovable according ACPI information and invoke it in the rh_call_control(). When hub descriptor request is issued at first time, usb port device isn't created and usb port is not bound with acpi. So first hub descriptor request is not changed based on ACPI information. After usb port devices being created, call usb_hub_adjust_DeviceRemovable in the hub_configure() and then set hub port's DeviceRemovable according ACPI information and this also works for non-root hub. Acked-by: Alan Stern Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd.c | 4 ++++ drivers/usb/core/hub.c | 43 +++++++++++++++++++++++++++++++++++++++++++ drivers/usb/core/usb.h | 3 +++ 3 files changed, 50 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 5f6da8b2d6a1..2459896d040a 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -619,6 +619,10 @@ nongeneric: status = hcd->driver->hub_control (hcd, typeReq, wValue, wIndex, tbuf, wLength); + + if (typeReq == GetHubDescriptor) + usb_hub_adjust_deviceremovable(hcd->self.root_hub, + (struct usb_hub_descriptor *)tbuf); break; error: /* "protocol stall" on error */ diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index cfdd4eecc5a9..29ca6ed3bea8 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1513,6 +1513,8 @@ static int hub_configure(struct usb_hub *hub, dev_err(hub->intfdev, "couldn't create port%d device.\n", i + 1); + usb_hub_adjust_deviceremovable(hdev, hub->descriptor); + hub_activate(hub, HUB_INIT); return 0; @@ -5219,6 +5221,47 @@ usb_get_hub_port_connect_type(struct usb_device *hdev, int port1) return hub->ports[port1 - 1]->connect_type; } +void usb_hub_adjust_deviceremovable(struct usb_device *hdev, + struct usb_hub_descriptor *desc) +{ + enum usb_port_connect_type connect_type; + int i; + + if (!hub_is_superspeed(hdev)) { + for (i = 1; i <= hdev->maxchild; i++) { + connect_type = usb_get_hub_port_connect_type(hdev, i); + + if (connect_type == USB_PORT_CONNECT_TYPE_HARD_WIRED) { + u8 mask = 1 << (i%8); + + if (!(desc->u.hs.DeviceRemovable[i/8] & mask)) { + dev_dbg(&hdev->dev, "usb port%d's DeviceRemovable is changed to 1 according to platform information.\n", + i); + desc->u.hs.DeviceRemovable[i/8] |= mask; + } + } + } + } else { + u16 port_removable = le16_to_cpu(desc->u.ss.DeviceRemovable); + + for (i = 1; i <= hdev->maxchild; i++) { + connect_type = usb_get_hub_port_connect_type(hdev, i); + + if (connect_type == USB_PORT_CONNECT_TYPE_HARD_WIRED) { + u16 mask = 1 << i; + + if (!(port_removable & mask)) { + dev_dbg(&hdev->dev, "usb port%d's DeviceRemovable is changed to 1 according to platform information.\n", + i); + port_removable |= mask; + } + } + } + + desc->u.ss.DeviceRemovable = cpu_to_le16(port_removable); + } +} + #ifdef CONFIG_ACPI /** * usb_get_hub_port_acpi_handle - Get the usb port's acpi handle diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index fb7d8fcb4551..a7f20bde0e5e 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -1,6 +1,7 @@ #include #include +struct usb_hub_descriptor; struct dev_state; /* Functions local to drivers/usb/core/ */ @@ -182,6 +183,8 @@ extern enum usb_port_connect_type usb_get_hub_port_connect_type(struct usb_device *hdev, int port1); extern void usb_set_hub_port_connect_type(struct usb_device *hdev, int port1, enum usb_port_connect_type type); +extern void usb_hub_adjust_deviceremovable(struct usb_device *hdev, + struct usb_hub_descriptor *desc); #ifdef CONFIG_ACPI extern int usb_acpi_register(void); -- cgit v1.2.3 From b506eebc504caaf863b5c5a68a1e1d304d610482 Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 22 Jan 2013 18:30:40 +0530 Subject: ARM: EXYNOS: Update & move usb-phy types to generic include layer Updating the names of usb-phy types to more generic names: USB_PHY_TYPE_DEIVCE & USB_PHY_TYPE_HOST; and further update its dependencies. Signed-off-by: Praveen Paneri Signed-off-by: Vivek Gautam Acked-by: Kukjin Kim Signed-off-by: Felipe Balbi --- drivers/usb/host/ehci-s5p.c | 9 +++++---- drivers/usb/host/ohci-exynos.c | 9 +++++---- include/linux/usb/samsung_usb_phy.h | 16 ++++++++++++++++ 3 files changed, 26 insertions(+), 8 deletions(-) create mode 100644 include/linux/usb/samsung_usb_phy.h (limited to 'drivers') diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c index 319dcfaa8735..46ca5efac82b 100644 --- a/drivers/usb/host/ehci-s5p.c +++ b/drivers/usb/host/ehci-s5p.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #define EHCI_INSNREG00(base) (base + 0x90) @@ -164,7 +165,7 @@ static int s5p_ehci_probe(struct platform_device *pdev) } if (pdata->phy_init) - pdata->phy_init(pdev, S5P_USB_PHY_HOST); + pdata->phy_init(pdev, USB_PHY_TYPE_HOST); ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs; @@ -198,7 +199,7 @@ static int s5p_ehci_remove(struct platform_device *pdev) usb_remove_hcd(hcd); if (pdata && pdata->phy_exit) - pdata->phy_exit(pdev, S5P_USB_PHY_HOST); + pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); clk_disable_unprepare(s5p_ehci->clk); @@ -229,7 +230,7 @@ static int s5p_ehci_suspend(struct device *dev) rc = ehci_suspend(hcd, do_wakeup); if (pdata && pdata->phy_exit) - pdata->phy_exit(pdev, S5P_USB_PHY_HOST); + pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); clk_disable_unprepare(s5p_ehci->clk); @@ -246,7 +247,7 @@ static int s5p_ehci_resume(struct device *dev) clk_prepare_enable(s5p_ehci->clk); if (pdata && pdata->phy_init) - pdata->phy_init(pdev, S5P_USB_PHY_HOST); + pdata->phy_init(pdev, USB_PHY_TYPE_HOST); /* DMA burst Enable */ writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs)); diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c index aa3b8844bb9f..804fb62a888c 100644 --- a/drivers/usb/host/ohci-exynos.c +++ b/drivers/usb/host/ohci-exynos.c @@ -15,6 +15,7 @@ #include #include #include +#include #include struct exynos_ohci_hcd { @@ -153,7 +154,7 @@ static int exynos_ohci_probe(struct platform_device *pdev) } if (pdata->phy_init) - pdata->phy_init(pdev, S5P_USB_PHY_HOST); + pdata->phy_init(pdev, USB_PHY_TYPE_HOST); ohci = hcd_to_ohci(hcd); ohci_hcd_init(ohci); @@ -184,7 +185,7 @@ static int exynos_ohci_remove(struct platform_device *pdev) usb_remove_hcd(hcd); if (pdata && pdata->phy_exit) - pdata->phy_exit(pdev, S5P_USB_PHY_HOST); + pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); clk_disable_unprepare(exynos_ohci->clk); @@ -229,7 +230,7 @@ static int exynos_ohci_suspend(struct device *dev) clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); if (pdata && pdata->phy_exit) - pdata->phy_exit(pdev, S5P_USB_PHY_HOST); + pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); clk_disable_unprepare(exynos_ohci->clk); @@ -249,7 +250,7 @@ static int exynos_ohci_resume(struct device *dev) clk_prepare_enable(exynos_ohci->clk); if (pdata && pdata->phy_init) - pdata->phy_init(pdev, S5P_USB_PHY_HOST); + pdata->phy_init(pdev, USB_PHY_TYPE_HOST); ohci_resume(hcd, false); diff --git a/include/linux/usb/samsung_usb_phy.h b/include/linux/usb/samsung_usb_phy.h new file mode 100644 index 000000000000..916782699f1c --- /dev/null +++ b/include/linux/usb/samsung_usb_phy.h @@ -0,0 +1,16 @@ +/* + * Copyright (C) 2012 Samsung Electronics Co.Ltd + * http://www.samsung.com/ + * + * Defines phy types for samsung usb phy controllers - HOST or DEIVCE. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +enum samsung_usb_phy_type { + USB_PHY_TYPE_DEVICE, + USB_PHY_TYPE_HOST, +}; -- cgit v1.2.3 From 8c1b3e16e902b010f79e2d299927ec43b495f1c7 Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 22 Jan 2013 18:30:41 +0530 Subject: usb: phy: samsung: Add host phy support to samsung-phy driver This patch adds host phy support to samsung-usbphy driver and further adds support for samsung's exynos5250 usb-phy. Signed-off-by: Praveen Paneri Signed-off-by: Vivek Gautam Acked-by: Kukjin Kim Signed-off-by: Felipe Balbi --- .../devicetree/bindings/usb/samsung-usbphy.txt | 12 +- drivers/usb/phy/Kconfig | 2 +- drivers/usb/phy/samsung-usbphy.c | 513 +++++++++++++++++++-- 3 files changed, 496 insertions(+), 31 deletions(-) (limited to 'drivers') diff --git a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt index 22d06cfdb076..033194934f64 100644 --- a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt +++ b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt @@ -1,15 +1,23 @@ * Samsung's usb phy transceiver -The Samsung's phy transceiver is used for controlling usb otg phy for -s3c-hsotg usb device controller. +The Samsung's phy transceiver is used for controlling usb phy for +s3c-hsotg as well as ehci-s5p and ohci-exynos usb controllers +across Samsung SOCs. TODO: Adding the PHY binding with controller(s) according to the under developement generic PHY driver. Required properties: + +Exynos4210: - compatible : should be "samsung,exynos4210-usbphy" - reg : base physical address of the phy registers and length of memory mapped region. +Exynos5250: +- compatible : should be "samsung,exynos5250-usbphy" +- reg : base physical address of the phy registers and length of memory mapped + region. + Optional properties: - #address-cells: should be '1' when usbphy node has a child node with 'reg' property. diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 36a85b675429..fae4d08c0ddd 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -48,7 +48,7 @@ config USB_RCAR_PHY config SAMSUNG_USBPHY bool "Samsung USB PHY controller Driver" - depends on USB_S3C_HSOTG + depends on USB_S3C_HSOTG || USB_EHCI_S5P || USB_OHCI_EXYNOS select USB_OTG_UTILS help Enable this to support Samsung USB phy controller for samsung diff --git a/drivers/usb/phy/samsung-usbphy.c b/drivers/usb/phy/samsung-usbphy.c index 30aebb59d803..9e9861c673ab 100644 --- a/drivers/usb/phy/samsung-usbphy.c +++ b/drivers/usb/phy/samsung-usbphy.c @@ -5,7 +5,8 @@ * * Author: Praveen Paneri * - * Samsung USB2.0 High-speed OTG transceiver, talks to S3C HS OTG controller + * Samsung USB2.0 PHY transceiver; talks to S3C HS OTG controller, EHCI-S5P and + * OHCI-EXYNOS controllers. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -21,11 +22,13 @@ #include #include #include +#include #include #include #include #include #include +#include #include /* Register definitions */ @@ -57,24 +60,132 @@ #define RSTCON_HLINK_SWRST (0x1 << 1) #define RSTCON_SWRST (0x1 << 0) +/* EXYNOS5 */ +#define EXYNOS5_PHY_HOST_CTRL0 (0x00) + +#define HOST_CTRL0_PHYSWRSTALL (0x1 << 31) + +#define HOST_CTRL0_REFCLKSEL_MASK (0x3 << 19) +#define HOST_CTRL0_REFCLKSEL_XTAL (0x0 << 19) +#define HOST_CTRL0_REFCLKSEL_EXTL (0x1 << 19) +#define HOST_CTRL0_REFCLKSEL_CLKCORE (0x2 << 19) + +#define HOST_CTRL0_FSEL_MASK (0x7 << 16) +#define HOST_CTRL0_FSEL(_x) ((_x) << 16) + +#define FSEL_CLKSEL_50M (0x7) +#define FSEL_CLKSEL_24M (0x5) +#define FSEL_CLKSEL_20M (0x4) +#define FSEL_CLKSEL_19200K (0x3) +#define FSEL_CLKSEL_12M (0x2) +#define FSEL_CLKSEL_10M (0x1) +#define FSEL_CLKSEL_9600K (0x0) + +#define HOST_CTRL0_TESTBURNIN (0x1 << 11) +#define HOST_CTRL0_RETENABLE (0x1 << 10) +#define HOST_CTRL0_COMMONON_N (0x1 << 9) +#define HOST_CTRL0_SIDDQ (0x1 << 6) +#define HOST_CTRL0_FORCESLEEP (0x1 << 5) +#define HOST_CTRL0_FORCESUSPEND (0x1 << 4) +#define HOST_CTRL0_WORDINTERFACE (0x1 << 3) +#define HOST_CTRL0_UTMISWRST (0x1 << 2) +#define HOST_CTRL0_LINKSWRST (0x1 << 1) +#define HOST_CTRL0_PHYSWRST (0x1 << 0) + +#define EXYNOS5_PHY_HOST_TUNE0 (0x04) + +#define EXYNOS5_PHY_HSIC_CTRL1 (0x10) + +#define EXYNOS5_PHY_HSIC_TUNE1 (0x14) + +#define EXYNOS5_PHY_HSIC_CTRL2 (0x20) + +#define EXYNOS5_PHY_HSIC_TUNE2 (0x24) + +#define HSIC_CTRL_REFCLKSEL_MASK (0x3 << 23) +#define HSIC_CTRL_REFCLKSEL (0x2 << 23) + +#define HSIC_CTRL_REFCLKDIV_MASK (0x7f << 16) +#define HSIC_CTRL_REFCLKDIV(_x) ((_x) << 16) +#define HSIC_CTRL_REFCLKDIV_12 (0x24 << 16) +#define HSIC_CTRL_REFCLKDIV_15 (0x1c << 16) +#define HSIC_CTRL_REFCLKDIV_16 (0x1a << 16) +#define HSIC_CTRL_REFCLKDIV_19_2 (0x15 << 16) +#define HSIC_CTRL_REFCLKDIV_20 (0x14 << 16) + +#define HSIC_CTRL_SIDDQ (0x1 << 6) +#define HSIC_CTRL_FORCESLEEP (0x1 << 5) +#define HSIC_CTRL_FORCESUSPEND (0x1 << 4) +#define HSIC_CTRL_WORDINTERFACE (0x1 << 3) +#define HSIC_CTRL_UTMISWRST (0x1 << 2) +#define HSIC_CTRL_PHYSWRST (0x1 << 0) + +#define EXYNOS5_PHY_HOST_EHCICTRL (0x30) + +#define HOST_EHCICTRL_ENAINCRXALIGN (0x1 << 29) +#define HOST_EHCICTRL_ENAINCR4 (0x1 << 28) +#define HOST_EHCICTRL_ENAINCR8 (0x1 << 27) +#define HOST_EHCICTRL_ENAINCR16 (0x1 << 26) + +#define EXYNOS5_PHY_HOST_OHCICTRL (0x34) + +#define HOST_OHCICTRL_SUSPLGCY (0x1 << 3) +#define HOST_OHCICTRL_APPSTARTCLK (0x1 << 2) +#define HOST_OHCICTRL_CNTSEL (0x1 << 1) +#define HOST_OHCICTRL_CLKCKTRST (0x1 << 0) + +#define EXYNOS5_PHY_OTG_SYS (0x38) + +#define OTG_SYS_PHYLINK_SWRESET (0x1 << 14) +#define OTG_SYS_LINKSWRST_UOTG (0x1 << 13) +#define OTG_SYS_PHY0_SWRST (0x1 << 12) + +#define OTG_SYS_REFCLKSEL_MASK (0x3 << 9) +#define OTG_SYS_REFCLKSEL_XTAL (0x0 << 9) +#define OTG_SYS_REFCLKSEL_EXTL (0x1 << 9) +#define OTG_SYS_REFCLKSEL_CLKCORE (0x2 << 9) + +#define OTG_SYS_IDPULLUP_UOTG (0x1 << 8) +#define OTG_SYS_COMMON_ON (0x1 << 7) + +#define OTG_SYS_FSEL_MASK (0x7 << 4) +#define OTG_SYS_FSEL(_x) ((_x) << 4) + +#define OTG_SYS_FORCESLEEP (0x1 << 3) +#define OTG_SYS_OTGDISABLE (0x1 << 2) +#define OTG_SYS_SIDDQ_UOTG (0x1 << 1) +#define OTG_SYS_FORCESUSPEND (0x1 << 0) + +#define EXYNOS5_PHY_OTG_TUNE (0x40) + #ifndef MHZ #define MHZ (1000*1000) #endif +#ifndef KHZ +#define KHZ (1000) +#endif + +#define EXYNOS_USBHOST_PHY_CTRL_OFFSET (0x4) #define S3C64XX_USBPHY_ENABLE (0x1 << 16) #define EXYNOS_USBPHY_ENABLE (0x1 << 0) +#define EXYNOS_USB20PHY_CFG_HOST_LINK (0x1 << 0) enum samsung_cpu_type { TYPE_S3C64XX, TYPE_EXYNOS4210, + TYPE_EXYNOS5250, }; /* * struct samsung_usbphy_drvdata - driver data for various SoC variants * @cpu_type: machine identifier * @devphy_en_mask: device phy enable mask for PHY CONTROL register + * @hostphy_en_mask: host phy enable mask for PHY CONTROL register * @devphy_reg_offset: offset to DEVICE PHY CONTROL register from * mapped address of system controller. + * @hostphy_reg_offset: offset to HOST PHY CONTROL register from + * mapped address of system controller. * * Here we have a separate mask for device type phy. * Having different masks for host and device type phy helps @@ -87,7 +198,9 @@ enum samsung_cpu_type { struct samsung_usbphy_drvdata { int cpu_type; int devphy_en_mask; + int hostphy_en_mask; u32 devphy_reg_offset; + u32 hostphy_reg_offset; }; /* @@ -98,8 +211,12 @@ struct samsung_usbphy_drvdata { * @clk: usb phy clock * @regs: usb phy controller registers memory base * @pmuregs: USB device PHY_CONTROL register memory base + * @sysreg: USB2.0 PHY_CFG register memory base * @ref_clk_freq: reference clock frequency selection * @drv_data: driver data available for different SoCs + * @phy_type: Samsung SoCs specific phy types: #HOST + * #DEVICE + * @phy_usage: usage count for phy * @lock: lock for phy operations */ struct samsung_usbphy { @@ -109,13 +226,27 @@ struct samsung_usbphy { struct clk *clk; void __iomem *regs; void __iomem *pmuregs; + void __iomem *sysreg; int ref_clk_freq; const struct samsung_usbphy_drvdata *drv_data; + enum samsung_usb_phy_type phy_type; + atomic_t phy_usage; spinlock_t lock; }; #define phy_to_sphy(x) container_of((x), struct samsung_usbphy, phy) +int samsung_usbphy_set_host(struct usb_otg *otg, struct usb_bus *host) +{ + if (!otg) + return -ENODEV; + + if (!otg->host) + otg->host = host; + + return 0; +} + static int samsung_usbphy_parse_dt(struct samsung_usbphy *sphy) { struct device_node *usbphy_sys; @@ -129,14 +260,27 @@ static int samsung_usbphy_parse_dt(struct samsung_usbphy *sphy) sphy->pmuregs = of_iomap(usbphy_sys, 0); - of_node_put(usbphy_sys); - if (sphy->pmuregs == NULL) { dev_err(sphy->dev, "Can't get usb-phy pmu control register\n"); - return -ENODEV; + goto err0; } + sphy->sysreg = of_iomap(usbphy_sys, 1); + + /* + * Not returning error code here, since this situation is not fatal. + * Few SoCs may not have this switch available + */ + if (sphy->sysreg == NULL) + dev_warn(sphy->dev, "Can't get usb-phy sysreg cfg register\n"); + + of_node_put(usbphy_sys); + return 0; + +err0: + of_node_put(usbphy_sys); + return -ENXIO; } /* @@ -146,17 +290,42 @@ static int samsung_usbphy_parse_dt(struct samsung_usbphy *sphy) */ static void samsung_usbphy_set_isolation(struct samsung_usbphy *sphy, bool on) { - void __iomem *reg; + void __iomem *reg = NULL; u32 reg_val; - u32 en_mask; + u32 en_mask = 0; if (!sphy->pmuregs) { dev_warn(sphy->dev, "Can't set pmu isolation\n"); return; } - reg = sphy->pmuregs + sphy->drv_data->devphy_reg_offset; - en_mask = sphy->drv_data->devphy_en_mask; + switch (sphy->drv_data->cpu_type) { + case TYPE_S3C64XX: + /* + * Do nothing: We will add here once S3C64xx goes for DT support + */ + break; + case TYPE_EXYNOS4210: + /* + * Fall through since exynos4210 and exynos5250 have similar + * register architecture: two separate registers for host and + * device phy control with enable bit at position 0. + */ + case TYPE_EXYNOS5250: + if (sphy->phy_type == USB_PHY_TYPE_DEVICE) { + reg = sphy->pmuregs + + sphy->drv_data->devphy_reg_offset; + en_mask = sphy->drv_data->devphy_en_mask; + } else if (sphy->phy_type == USB_PHY_TYPE_HOST) { + reg = sphy->pmuregs + + sphy->drv_data->hostphy_reg_offset; + en_mask = sphy->drv_data->hostphy_en_mask; + } + break; + default: + dev_err(sphy->dev, "Invalid SoC type\n"); + return; + } reg_val = readl(reg); @@ -168,6 +337,43 @@ static void samsung_usbphy_set_isolation(struct samsung_usbphy *sphy, bool on) writel(reg_val, reg); } +/* + * Configure the mode of working of usb-phy here: HOST/DEVICE. + */ +static void samsung_usbphy_cfg_sel(struct samsung_usbphy *sphy) +{ + u32 reg; + + if (!sphy->sysreg) { + dev_warn(sphy->dev, "Can't configure specified phy mode\n"); + return; + } + + reg = readl(sphy->sysreg); + + if (sphy->phy_type == USB_PHY_TYPE_DEVICE) + reg &= ~EXYNOS_USB20PHY_CFG_HOST_LINK; + else if (sphy->phy_type == USB_PHY_TYPE_HOST) + reg |= EXYNOS_USB20PHY_CFG_HOST_LINK; + + writel(reg, sphy->sysreg); +} + +/* + * PHYs are different for USB Device and USB Host. + * This make sure that correct PHY type is selected before + * any operation on PHY. + */ +static int samsung_usbphy_set_type(struct usb_phy *phy, + enum samsung_usb_phy_type phy_type) +{ + struct samsung_usbphy *sphy = phy_to_sphy(phy); + + sphy->phy_type = phy_type; + + return 0; +} + /* * Returns reference clock frequency selection value */ @@ -176,34 +382,185 @@ static int samsung_usbphy_get_refclk_freq(struct samsung_usbphy *sphy) struct clk *ref_clk; int refclk_freq = 0; - ref_clk = clk_get(sphy->dev, "xusbxti"); + /* + * In exynos5250 USB host and device PHY use + * external crystal clock XXTI + */ + if (sphy->drv_data->cpu_type == TYPE_EXYNOS5250) + ref_clk = clk_get(sphy->dev, "ext_xtal"); + else + ref_clk = clk_get(sphy->dev, "xusbxti"); if (IS_ERR(ref_clk)) { dev_err(sphy->dev, "Failed to get reference clock\n"); return PTR_ERR(ref_clk); } - switch (clk_get_rate(ref_clk)) { - case 12 * MHZ: - refclk_freq = PHYCLK_CLKSEL_12M; - break; - case 24 * MHZ: - refclk_freq = PHYCLK_CLKSEL_24M; - break; - case 48 * MHZ: - refclk_freq = PHYCLK_CLKSEL_48M; - break; - default: - if (sphy->drv_data->cpu_type == TYPE_S3C64XX) - refclk_freq = PHYCLK_CLKSEL_48M; - else + if (sphy->drv_data->cpu_type == TYPE_EXYNOS5250) { + /* set clock frequency for PLL */ + switch (clk_get_rate(ref_clk)) { + case 9600 * KHZ: + refclk_freq = FSEL_CLKSEL_9600K; + break; + case 10 * MHZ: + refclk_freq = FSEL_CLKSEL_10M; + break; + case 12 * MHZ: + refclk_freq = FSEL_CLKSEL_12M; + break; + case 19200 * KHZ: + refclk_freq = FSEL_CLKSEL_19200K; + break; + case 20 * MHZ: + refclk_freq = FSEL_CLKSEL_20M; + break; + case 50 * MHZ: + refclk_freq = FSEL_CLKSEL_50M; + break; + case 24 * MHZ: + default: + /* default reference clock */ + refclk_freq = FSEL_CLKSEL_24M; + break; + } + } else { + switch (clk_get_rate(ref_clk)) { + case 12 * MHZ: + refclk_freq = PHYCLK_CLKSEL_12M; + break; + case 24 * MHZ: refclk_freq = PHYCLK_CLKSEL_24M; - break; + break; + case 48 * MHZ: + refclk_freq = PHYCLK_CLKSEL_48M; + break; + default: + if (sphy->drv_data->cpu_type == TYPE_S3C64XX) + refclk_freq = PHYCLK_CLKSEL_48M; + else + refclk_freq = PHYCLK_CLKSEL_24M; + break; + } } clk_put(ref_clk); return refclk_freq; } +static bool exynos5_phyhost_is_on(void *regs) +{ + u32 reg; + + reg = readl(regs + EXYNOS5_PHY_HOST_CTRL0); + + return !(reg & HOST_CTRL0_SIDDQ); +} + +static void samsung_exynos5_usbphy_enable(struct samsung_usbphy *sphy) +{ + void __iomem *regs = sphy->regs; + u32 phyclk = sphy->ref_clk_freq; + u32 phyhost; + u32 phyotg; + u32 phyhsic; + u32 ehcictrl; + u32 ohcictrl; + + /* + * phy_usage helps in keeping usage count for phy + * so that the first consumer enabling the phy is also + * the last consumer to disable it. + */ + + atomic_inc(&sphy->phy_usage); + + if (exynos5_phyhost_is_on(regs)) { + dev_info(sphy->dev, "Already power on PHY\n"); + return; + } + + /* Host configuration */ + phyhost = readl(regs + EXYNOS5_PHY_HOST_CTRL0); + + /* phy reference clock configuration */ + phyhost &= ~HOST_CTRL0_FSEL_MASK; + phyhost |= HOST_CTRL0_FSEL(phyclk); + + /* host phy reset */ + phyhost &= ~(HOST_CTRL0_PHYSWRST | + HOST_CTRL0_PHYSWRSTALL | + HOST_CTRL0_SIDDQ | + /* Enable normal mode of operation */ + HOST_CTRL0_FORCESUSPEND | + HOST_CTRL0_FORCESLEEP); + + /* Link reset */ + phyhost |= (HOST_CTRL0_LINKSWRST | + HOST_CTRL0_UTMISWRST | + /* COMMON Block configuration during suspend */ + HOST_CTRL0_COMMONON_N); + writel(phyhost, regs + EXYNOS5_PHY_HOST_CTRL0); + udelay(10); + phyhost &= ~(HOST_CTRL0_LINKSWRST | + HOST_CTRL0_UTMISWRST); + writel(phyhost, regs + EXYNOS5_PHY_HOST_CTRL0); + + /* OTG configuration */ + phyotg = readl(regs + EXYNOS5_PHY_OTG_SYS); + + /* phy reference clock configuration */ + phyotg &= ~OTG_SYS_FSEL_MASK; + phyotg |= OTG_SYS_FSEL(phyclk); + + /* Enable normal mode of operation */ + phyotg &= ~(OTG_SYS_FORCESUSPEND | + OTG_SYS_SIDDQ_UOTG | + OTG_SYS_FORCESLEEP | + OTG_SYS_REFCLKSEL_MASK | + /* COMMON Block configuration during suspend */ + OTG_SYS_COMMON_ON); + + /* OTG phy & link reset */ + phyotg |= (OTG_SYS_PHY0_SWRST | + OTG_SYS_LINKSWRST_UOTG | + OTG_SYS_PHYLINK_SWRESET | + OTG_SYS_OTGDISABLE | + /* Set phy refclk */ + OTG_SYS_REFCLKSEL_CLKCORE); + + writel(phyotg, regs + EXYNOS5_PHY_OTG_SYS); + udelay(10); + phyotg &= ~(OTG_SYS_PHY0_SWRST | + OTG_SYS_LINKSWRST_UOTG | + OTG_SYS_PHYLINK_SWRESET); + writel(phyotg, regs + EXYNOS5_PHY_OTG_SYS); + + /* HSIC phy configuration */ + phyhsic = (HSIC_CTRL_REFCLKDIV_12 | + HSIC_CTRL_REFCLKSEL | + HSIC_CTRL_PHYSWRST); + writel(phyhsic, regs + EXYNOS5_PHY_HSIC_CTRL1); + writel(phyhsic, regs + EXYNOS5_PHY_HSIC_CTRL2); + udelay(10); + phyhsic &= ~HSIC_CTRL_PHYSWRST; + writel(phyhsic, regs + EXYNOS5_PHY_HSIC_CTRL1); + writel(phyhsic, regs + EXYNOS5_PHY_HSIC_CTRL2); + + udelay(80); + + /* enable EHCI DMA burst */ + ehcictrl = readl(regs + EXYNOS5_PHY_HOST_EHCICTRL); + ehcictrl |= (HOST_EHCICTRL_ENAINCRXALIGN | + HOST_EHCICTRL_ENAINCR4 | + HOST_EHCICTRL_ENAINCR8 | + HOST_EHCICTRL_ENAINCR16); + writel(ehcictrl, regs + EXYNOS5_PHY_HOST_EHCICTRL); + + /* set ohci_suspend_on_n */ + ohcictrl = readl(regs + EXYNOS5_PHY_HOST_OHCICTRL); + ohcictrl |= HOST_OHCICTRL_SUSPLGCY; + writel(ohcictrl, regs + EXYNOS5_PHY_HOST_OHCICTRL); +} + static void samsung_usbphy_enable(struct samsung_usbphy *sphy) { void __iomem *regs = sphy->regs; @@ -239,6 +596,41 @@ static void samsung_usbphy_enable(struct samsung_usbphy *sphy) writel(rstcon, regs + SAMSUNG_RSTCON); } +static void samsung_exynos5_usbphy_disable(struct samsung_usbphy *sphy) +{ + void __iomem *regs = sphy->regs; + u32 phyhost; + u32 phyotg; + u32 phyhsic; + + if (atomic_dec_return(&sphy->phy_usage) > 0) { + dev_info(sphy->dev, "still being used\n"); + return; + } + + phyhsic = (HSIC_CTRL_REFCLKDIV_12 | + HSIC_CTRL_REFCLKSEL | + HSIC_CTRL_SIDDQ | + HSIC_CTRL_FORCESLEEP | + HSIC_CTRL_FORCESUSPEND); + writel(phyhsic, regs + EXYNOS5_PHY_HSIC_CTRL1); + writel(phyhsic, regs + EXYNOS5_PHY_HSIC_CTRL2); + + phyhost = readl(regs + EXYNOS5_PHY_HOST_CTRL0); + phyhost |= (HOST_CTRL0_SIDDQ | + HOST_CTRL0_FORCESUSPEND | + HOST_CTRL0_FORCESLEEP | + HOST_CTRL0_PHYSWRST | + HOST_CTRL0_PHYSWRSTALL); + writel(phyhost, regs + EXYNOS5_PHY_HOST_CTRL0); + + phyotg = readl(regs + EXYNOS5_PHY_OTG_SYS); + phyotg |= (OTG_SYS_FORCESUSPEND | + OTG_SYS_SIDDQ_UOTG | + OTG_SYS_FORCESLEEP); + writel(phyotg, regs + EXYNOS5_PHY_OTG_SYS); +} + static void samsung_usbphy_disable(struct samsung_usbphy *sphy) { void __iomem *regs = sphy->regs; @@ -266,11 +658,14 @@ static void samsung_usbphy_disable(struct samsung_usbphy *sphy) static int samsung_usbphy_init(struct usb_phy *phy) { struct samsung_usbphy *sphy; + struct usb_bus *host = NULL; unsigned long flags; int ret = 0; sphy = phy_to_sphy(phy); + host = phy->otg->host; + /* Enable the phy clock */ ret = clk_prepare_enable(sphy->clk); if (ret) { @@ -280,19 +675,35 @@ static int samsung_usbphy_init(struct usb_phy *phy) spin_lock_irqsave(&sphy->lock, flags); + if (host) { + /* setting default phy-type for USB 2.0 */ + if (!strstr(dev_name(host->controller), "ehci") || + !strstr(dev_name(host->controller), "ohci")) + samsung_usbphy_set_type(&sphy->phy, USB_PHY_TYPE_HOST); + } else { + samsung_usbphy_set_type(&sphy->phy, USB_PHY_TYPE_DEVICE); + } + /* Disable phy isolation */ if (sphy->plat && sphy->plat->pmu_isolation) sphy->plat->pmu_isolation(false); else samsung_usbphy_set_isolation(sphy, false); + /* Selecting Host/OTG mode; After reset USB2.0PHY_CFG: HOST */ + samsung_usbphy_cfg_sel(sphy); + /* Initialize usb phy registers */ - samsung_usbphy_enable(sphy); + if (sphy->drv_data->cpu_type == TYPE_EXYNOS5250) + samsung_exynos5_usbphy_enable(sphy); + else + samsung_usbphy_enable(sphy); spin_unlock_irqrestore(&sphy->lock, flags); /* Disable the phy clock */ clk_disable_unprepare(sphy->clk); + return ret; } @@ -302,10 +713,13 @@ static int samsung_usbphy_init(struct usb_phy *phy) static void samsung_usbphy_shutdown(struct usb_phy *phy) { struct samsung_usbphy *sphy; + struct usb_bus *host = NULL; unsigned long flags; sphy = phy_to_sphy(phy); + host = phy->otg->host; + if (clk_prepare_enable(sphy->clk)) { dev_err(sphy->dev, "%s: clk_prepare_enable failed\n", __func__); return; @@ -313,8 +727,20 @@ static void samsung_usbphy_shutdown(struct usb_phy *phy) spin_lock_irqsave(&sphy->lock, flags); + if (host) { + /* setting default phy-type for USB 2.0 */ + if (!strstr(dev_name(host->controller), "ehci") || + !strstr(dev_name(host->controller), "ohci")) + samsung_usbphy_set_type(&sphy->phy, USB_PHY_TYPE_HOST); + } else { + samsung_usbphy_set_type(&sphy->phy, USB_PHY_TYPE_DEVICE); + } + /* De-initialize usb phy registers */ - samsung_usbphy_disable(sphy); + if (sphy->drv_data->cpu_type == TYPE_EXYNOS5250) + samsung_exynos5_usbphy_disable(sphy); + else + samsung_usbphy_disable(sphy); /* Enable phy isolation */ if (sphy->plat && sphy->plat->pmu_isolation) @@ -346,7 +772,9 @@ static inline const struct samsung_usbphy_drvdata static int __devinit samsung_usbphy_probe(struct platform_device *pdev) { struct samsung_usbphy *sphy; + struct usb_otg *otg; struct samsung_usbphy_data *pdata = pdev->dev.platform_data; + const struct samsung_usbphy_drvdata *drv_data; struct device *dev = &pdev->dev; struct resource *phy_mem; void __iomem *phy_base; @@ -369,7 +797,17 @@ static int __devinit samsung_usbphy_probe(struct platform_device *pdev) if (!sphy) return -ENOMEM; - clk = devm_clk_get(dev, "otg"); + otg = devm_kzalloc(dev, sizeof(*otg), GFP_KERNEL); + if (!otg) + return -ENOMEM; + + drv_data = samsung_usbphy_get_driver_data(pdev); + + if (drv_data->cpu_type == TYPE_EXYNOS5250) + clk = devm_clk_get(dev, "usbhost"); + else + clk = devm_clk_get(dev, "otg"); + if (IS_ERR(clk)) { dev_err(dev, "Failed to get otg clock\n"); return PTR_ERR(clk); @@ -391,13 +829,17 @@ static int __devinit samsung_usbphy_probe(struct platform_device *pdev) sphy->plat = pdata; sphy->regs = phy_base; sphy->clk = clk; + sphy->drv_data = drv_data; sphy->phy.dev = sphy->dev; sphy->phy.label = "samsung-usbphy"; sphy->phy.init = samsung_usbphy_init; sphy->phy.shutdown = samsung_usbphy_shutdown; - sphy->drv_data = samsung_usbphy_get_driver_data(pdev); sphy->ref_clk_freq = samsung_usbphy_get_refclk_freq(sphy); + sphy->phy.otg = otg; + sphy->phy.otg->phy = &sphy->phy; + sphy->phy.otg->set_host = samsung_usbphy_set_host; + spin_lock_init(&sphy->lock); platform_set_drvdata(pdev, sphy); @@ -413,6 +855,8 @@ static int __exit samsung_usbphy_remove(struct platform_device *pdev) if (sphy->pmuregs) iounmap(sphy->pmuregs); + if (sphy->sysreg) + iounmap(sphy->sysreg); return 0; } @@ -425,6 +869,13 @@ static const struct samsung_usbphy_drvdata usbphy_s3c64xx = { static const struct samsung_usbphy_drvdata usbphy_exynos4 = { .cpu_type = TYPE_EXYNOS4210, .devphy_en_mask = EXYNOS_USBPHY_ENABLE, + .hostphy_en_mask = EXYNOS_USBPHY_ENABLE, +}; + +static struct samsung_usbphy_drvdata usbphy_exynos5 = { + .cpu_type = TYPE_EXYNOS5250, + .hostphy_en_mask = EXYNOS_USBPHY_ENABLE, + .hostphy_reg_offset = EXYNOS_USBHOST_PHY_CTRL_OFFSET, }; #ifdef CONFIG_OF @@ -435,6 +886,9 @@ static const struct of_device_id samsung_usbphy_dt_match[] = { }, { .compatible = "samsung,exynos4210-usbphy", .data = &usbphy_exynos4, + }, { + .compatible = "samsung,exynos5250-usbphy", + .data = &usbphy_exynos5 }, {}, }; @@ -448,6 +902,9 @@ static struct platform_device_id samsung_usbphy_driver_ids[] = { }, { .name = "exynos4210-usbphy", .driver_data = (unsigned long)&usbphy_exynos4, + }, { + .name = "exynos5250-usbphy", + .driver_data = (unsigned long)&usbphy_exynos5, }, {}, }; -- cgit v1.2.3 From d233c196ce1a3a33901b75ca818c85825683afba Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 22 Jan 2013 18:30:42 +0530 Subject: USB: ehci-s5p: Add phy driver support Adding the phy driver to ehci-s5p. Keeping the platform data for continuing the smooth operation for boards which still uses it Signed-off-by: Vivek Gautam Acked-by: Jingoo Han Acked-by: Alan Stern Acked-by: Kukjin Kim Signed-off-by: Felipe Balbi --- drivers/usb/host/ehci-s5p.c | 80 +++++++++++++++++++++++++++++++++------------ 1 file changed, 59 insertions(+), 21 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c index 46ca5efac82b..d603e6ec19a5 100644 --- a/drivers/usb/host/ehci-s5p.c +++ b/drivers/usb/host/ehci-s5p.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -33,6 +34,9 @@ struct s5p_ehci_hcd { struct device *dev; struct usb_hcd *hcd; struct clk *clk; + struct usb_phy *phy; + struct usb_otg *otg; + struct s5p_ehci_platdata *pdata; }; static const struct hc_driver s5p_ehci_hc_driver = { @@ -66,6 +70,26 @@ static const struct hc_driver s5p_ehci_hc_driver = { .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; +static void s5p_ehci_phy_enable(struct s5p_ehci_hcd *s5p_ehci) +{ + struct platform_device *pdev = to_platform_device(s5p_ehci->dev); + + if (s5p_ehci->phy) + usb_phy_init(s5p_ehci->phy); + else if (s5p_ehci->pdata->phy_init) + s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST); +} + +static void s5p_ehci_phy_disable(struct s5p_ehci_hcd *s5p_ehci) +{ + struct platform_device *pdev = to_platform_device(s5p_ehci->dev); + + if (s5p_ehci->phy) + usb_phy_shutdown(s5p_ehci->phy); + else if (s5p_ehci->pdata->phy_exit) + s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); +} + static void s5p_setup_vbus_gpio(struct platform_device *pdev) { int err; @@ -88,20 +112,15 @@ static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32); static int s5p_ehci_probe(struct platform_device *pdev) { - struct s5p_ehci_platdata *pdata; + struct s5p_ehci_platdata *pdata = pdev->dev.platform_data; struct s5p_ehci_hcd *s5p_ehci; struct usb_hcd *hcd; struct ehci_hcd *ehci; struct resource *res; + struct usb_phy *phy; int irq; int err; - pdata = pdev->dev.platform_data; - if (!pdata) { - dev_err(&pdev->dev, "No platform data defined\n"); - return -EINVAL; - } - /* * Right now device-tree probed devices don't get dma_mask set. * Since shared usb code relies on it, set it here for now. @@ -119,6 +138,20 @@ static int s5p_ehci_probe(struct platform_device *pdev) if (!s5p_ehci) return -ENOMEM; + phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(phy)) { + /* Fallback to pdata */ + if (!pdata) { + dev_warn(&pdev->dev, "no platform data or transceiver defined\n"); + return -EPROBE_DEFER; + } else { + s5p_ehci->pdata = pdata; + } + } else { + s5p_ehci->phy = phy; + s5p_ehci->otg = phy->otg; + } + s5p_ehci->dev = &pdev->dev; hcd = usb_create_hcd(&s5p_ehci_hc_driver, &pdev->dev, @@ -164,8 +197,10 @@ static int s5p_ehci_probe(struct platform_device *pdev) goto fail_io; } - if (pdata->phy_init) - pdata->phy_init(pdev, USB_PHY_TYPE_HOST); + if (s5p_ehci->otg) + s5p_ehci->otg->set_host(s5p_ehci->otg, &s5p_ehci->hcd->self); + + s5p_ehci_phy_enable(s5p_ehci); ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs; @@ -176,13 +211,15 @@ static int s5p_ehci_probe(struct platform_device *pdev) err = usb_add_hcd(hcd, irq, IRQF_SHARED); if (err) { dev_err(&pdev->dev, "Failed to add USB HCD\n"); - goto fail_io; + goto fail_add_hcd; } platform_set_drvdata(pdev, s5p_ehci); return 0; +fail_add_hcd: + s5p_ehci_phy_disable(s5p_ehci); fail_io: clk_disable_unprepare(s5p_ehci->clk); fail_clk: @@ -192,14 +229,15 @@ fail_clk: static int s5p_ehci_remove(struct platform_device *pdev) { - struct s5p_ehci_platdata *pdata = pdev->dev.platform_data; struct s5p_ehci_hcd *s5p_ehci = platform_get_drvdata(pdev); struct usb_hcd *hcd = s5p_ehci->hcd; usb_remove_hcd(hcd); - if (pdata && pdata->phy_exit) - pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); + if (s5p_ehci->otg) + s5p_ehci->otg->set_host(s5p_ehci->otg, &s5p_ehci->hcd->self); + + s5p_ehci_phy_disable(s5p_ehci); clk_disable_unprepare(s5p_ehci->clk); @@ -223,14 +261,14 @@ static int s5p_ehci_suspend(struct device *dev) struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev); struct usb_hcd *hcd = s5p_ehci->hcd; bool do_wakeup = device_may_wakeup(dev); - struct platform_device *pdev = to_platform_device(dev); - struct s5p_ehci_platdata *pdata = pdev->dev.platform_data; int rc; rc = ehci_suspend(hcd, do_wakeup); - if (pdata && pdata->phy_exit) - pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); + if (s5p_ehci->otg) + s5p_ehci->otg->set_host(s5p_ehci->otg, &s5p_ehci->hcd->self); + + s5p_ehci_phy_disable(s5p_ehci); clk_disable_unprepare(s5p_ehci->clk); @@ -241,13 +279,13 @@ static int s5p_ehci_resume(struct device *dev) { struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev); struct usb_hcd *hcd = s5p_ehci->hcd; - struct platform_device *pdev = to_platform_device(dev); - struct s5p_ehci_platdata *pdata = pdev->dev.platform_data; clk_prepare_enable(s5p_ehci->clk); - if (pdata && pdata->phy_init) - pdata->phy_init(pdev, USB_PHY_TYPE_HOST); + if (s5p_ehci->otg) + s5p_ehci->otg->set_host(s5p_ehci->otg, &s5p_ehci->hcd->self); + + s5p_ehci_phy_enable(s5p_ehci); /* DMA burst Enable */ writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs)); -- cgit v1.2.3 From ed993bf19b98fdb0d364913174b5001fc3ac199b Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 22 Jan 2013 18:30:43 +0530 Subject: USB: ohci-exynos: Add phy driver support Adding the phy-driver to ohci-exynos. Keeping the platform data for continuing the smooth operation for boards which still uses it Signed-off-by: Vivek Gautam Acked-by: Jingoo Han Acked-by: Alan Stern Acked-by: Kukjin Kim Signed-off-by: Felipe Balbi --- drivers/usb/host/ohci-exynos.c | 84 +++++++++++++++++++++++++++++++----------- 1 file changed, 63 insertions(+), 21 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c index 804fb62a888c..1b3840980177 100644 --- a/drivers/usb/host/ohci-exynos.c +++ b/drivers/usb/host/ohci-exynos.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -22,8 +23,31 @@ struct exynos_ohci_hcd { struct device *dev; struct usb_hcd *hcd; struct clk *clk; + struct usb_phy *phy; + struct usb_otg *otg; + struct exynos4_ohci_platdata *pdata; }; +static void exynos_ohci_phy_enable(struct exynos_ohci_hcd *exynos_ohci) +{ + struct platform_device *pdev = to_platform_device(exynos_ohci->dev); + + if (exynos_ohci->phy) + usb_phy_init(exynos_ohci->phy); + else if (exynos_ohci->pdata->phy_init) + exynos_ohci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST); +} + +static void exynos_ohci_phy_disable(struct exynos_ohci_hcd *exynos_ohci) +{ + struct platform_device *pdev = to_platform_device(exynos_ohci->dev); + + if (exynos_ohci->phy) + usb_phy_shutdown(exynos_ohci->phy); + else if (exynos_ohci->pdata->phy_exit) + exynos_ohci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); +} + static int ohci_exynos_reset(struct usb_hcd *hcd) { return ohci_init(hcd_to_ohci(hcd)); @@ -79,20 +103,15 @@ static u64 ohci_exynos_dma_mask = DMA_BIT_MASK(32); static int exynos_ohci_probe(struct platform_device *pdev) { - struct exynos4_ohci_platdata *pdata; + struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data; struct exynos_ohci_hcd *exynos_ohci; struct usb_hcd *hcd; struct ohci_hcd *ohci; struct resource *res; + struct usb_phy *phy; int irq; int err; - pdata = pdev->dev.platform_data; - if (!pdata) { - dev_err(&pdev->dev, "No platform data defined\n"); - return -EINVAL; - } - /* * Right now device-tree probed devices don't get dma_mask set. * Since shared usb code relies on it, set it here for now. @@ -108,6 +127,20 @@ static int exynos_ohci_probe(struct platform_device *pdev) if (!exynos_ohci) return -ENOMEM; + phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(phy)) { + /* Fallback to pdata */ + if (!pdata) { + dev_warn(&pdev->dev, "no platform data or transceiver defined\n"); + return -EPROBE_DEFER; + } else { + exynos_ohci->pdata = pdata; + } + } else { + exynos_ohci->phy = phy; + exynos_ohci->otg = phy->otg; + } + exynos_ohci->dev = &pdev->dev; hcd = usb_create_hcd(&exynos_ohci_hc_driver, &pdev->dev, @@ -153,8 +186,11 @@ static int exynos_ohci_probe(struct platform_device *pdev) goto fail_io; } - if (pdata->phy_init) - pdata->phy_init(pdev, USB_PHY_TYPE_HOST); + if (exynos_ohci->otg) + exynos_ohci->otg->set_host(exynos_ohci->otg, + &exynos_ohci->hcd->self); + + exynos_ohci_phy_enable(exynos_ohci); ohci = hcd_to_ohci(hcd); ohci_hcd_init(ohci); @@ -162,13 +198,15 @@ static int exynos_ohci_probe(struct platform_device *pdev) err = usb_add_hcd(hcd, irq, IRQF_SHARED); if (err) { dev_err(&pdev->dev, "Failed to add USB HCD\n"); - goto fail_io; + goto fail_add_hcd; } platform_set_drvdata(pdev, exynos_ohci); return 0; +fail_add_hcd: + exynos_ohci_phy_disable(exynos_ohci); fail_io: clk_disable_unprepare(exynos_ohci->clk); fail_clk: @@ -178,14 +216,16 @@ fail_clk: static int exynos_ohci_remove(struct platform_device *pdev) { - struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data; struct exynos_ohci_hcd *exynos_ohci = platform_get_drvdata(pdev); struct usb_hcd *hcd = exynos_ohci->hcd; usb_remove_hcd(hcd); - if (pdata && pdata->phy_exit) - pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); + if (exynos_ohci->otg) + exynos_ohci->otg->set_host(exynos_ohci->otg, + &exynos_ohci->hcd->self); + + exynos_ohci_phy_disable(exynos_ohci); clk_disable_unprepare(exynos_ohci->clk); @@ -209,8 +249,6 @@ static int exynos_ohci_suspend(struct device *dev) struct exynos_ohci_hcd *exynos_ohci = dev_get_drvdata(dev); struct usb_hcd *hcd = exynos_ohci->hcd; struct ohci_hcd *ohci = hcd_to_ohci(hcd); - struct platform_device *pdev = to_platform_device(dev); - struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data; unsigned long flags; int rc = 0; @@ -229,8 +267,11 @@ static int exynos_ohci_suspend(struct device *dev) clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - if (pdata && pdata->phy_exit) - pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); + if (exynos_ohci->otg) + exynos_ohci->otg->set_host(exynos_ohci->otg, + &exynos_ohci->hcd->self); + + exynos_ohci_phy_disable(exynos_ohci); clk_disable_unprepare(exynos_ohci->clk); @@ -244,13 +285,14 @@ static int exynos_ohci_resume(struct device *dev) { struct exynos_ohci_hcd *exynos_ohci = dev_get_drvdata(dev); struct usb_hcd *hcd = exynos_ohci->hcd; - struct platform_device *pdev = to_platform_device(dev); - struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data; clk_prepare_enable(exynos_ohci->clk); - if (pdata && pdata->phy_init) - pdata->phy_init(pdev, USB_PHY_TYPE_HOST); + if (exynos_ohci->otg) + exynos_ohci->otg->set_host(exynos_ohci->otg, + &exynos_ohci->hcd->self); + + exynos_ohci_phy_enable(exynos_ohci); ohci_resume(hcd, false); -- cgit v1.2.3 From 5a1a174c2c7f51b562071e06c9b52c5fd8adf6da Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Mon, 21 Jan 2013 19:30:12 +0530 Subject: usb: phy: samsung: Remove __devinit, __devexit_p and __exit annotations Dropping __devinit, __devexit_p, __exit annotations since they are nop and no longer supported. Signed-off-by: Vivek Gautam Signed-off-by: Felipe Balbi --- drivers/usb/phy/samsung-usbphy.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/phy/samsung-usbphy.c b/drivers/usb/phy/samsung-usbphy.c index 9e9861c673ab..6ea553733832 100644 --- a/drivers/usb/phy/samsung-usbphy.c +++ b/drivers/usb/phy/samsung-usbphy.c @@ -769,7 +769,7 @@ static inline const struct samsung_usbphy_drvdata platform_get_device_id(pdev)->driver_data; } -static int __devinit samsung_usbphy_probe(struct platform_device *pdev) +static int samsung_usbphy_probe(struct platform_device *pdev) { struct samsung_usbphy *sphy; struct usb_otg *otg; @@ -847,7 +847,7 @@ static int __devinit samsung_usbphy_probe(struct platform_device *pdev) return usb_add_phy(&sphy->phy, USB_PHY_TYPE_USB2); } -static int __exit samsung_usbphy_remove(struct platform_device *pdev) +static int samsung_usbphy_remove(struct platform_device *pdev) { struct samsung_usbphy *sphy = platform_get_drvdata(pdev); @@ -913,7 +913,7 @@ MODULE_DEVICE_TABLE(platform, samsung_usbphy_driver_ids); static struct platform_driver samsung_usbphy_driver = { .probe = samsung_usbphy_probe, - .remove = __devexit_p(samsung_usbphy_remove), + .remove = samsung_usbphy_remove, .id_table = samsung_usbphy_driver_ids, .driver = { .name = "samsung-usbphy", -- cgit v1.2.3 From aac16b6341f0022213fe828c50b7064744df86e0 Mon Sep 17 00:00:00 2001 From: Chao Xie Date: Thu, 24 Jan 2013 01:38:25 -0500 Subject: usb: gadget: mv_udc: use udc_start and udc_stop functions This patches converts the driver into the new style start/stop interface. As a result the driver no longer uses the static global the_conroller variable. Signed-off-by: Chao Xie Signed-off-by: Felipe Balbi --- drivers/usb/gadget/mv_udc_core.c | 79 ++++++++++++++++++---------------------- 1 file changed, 35 insertions(+), 44 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index 379aac7b82fc..8a8507a9f053 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -61,9 +61,6 @@ static DECLARE_COMPLETION(release_done); static const char driver_name[] = "mv_udc"; static const char driver_desc[] = DRIVER_DESC; -/* controller device global variable */ -static struct mv_udc *the_controller; - static void nuke(struct mv_ep *ep, int status); static void stop_activity(struct mv_udc *udc, struct usb_gadget_driver *driver); @@ -1268,9 +1265,8 @@ static int mv_udc_pullup(struct usb_gadget *gadget, int is_on) return retval; } -static int mv_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)); -static int mv_udc_stop(struct usb_gadget_driver *driver); +static int mv_udc_start(struct usb_gadget *, struct usb_gadget_driver *); +static int mv_udc_stop(struct usb_gadget *, struct usb_gadget_driver *); /* device controller usb_gadget_ops structure */ static const struct usb_gadget_ops mv_ops = { @@ -1285,8 +1281,8 @@ static const struct usb_gadget_ops mv_ops = { /* D+ pullup, software-controlled connect/disconnect to USB host */ .pullup = mv_udc_pullup, - .start = mv_udc_start, - .stop = mv_udc_stop, + .udc_start = mv_udc_start, + .udc_stop = mv_udc_stop, }; static int eps_init(struct mv_udc *udc) @@ -1373,15 +1369,14 @@ static void stop_activity(struct mv_udc *udc, struct usb_gadget_driver *driver) } } -static int mv_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) +static int mv_udc_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; int retval = 0; unsigned long flags; - if (!udc) - return -ENODEV; + udc = container_of(gadget, struct mv_udc, gadget); if (udc->driver) return -EBUSY; @@ -1399,26 +1394,14 @@ static int mv_udc_start(struct usb_gadget_driver *driver, spin_unlock_irqrestore(&udc->lock, flags); - retval = bind(&udc->gadget, driver); - if (retval) { - dev_err(&udc->dev->dev, "bind to driver %s --> %d\n", - driver->driver.name, retval); - udc->driver = NULL; - udc->gadget.dev.driver = NULL; - return retval; - } - if (!IS_ERR_OR_NULL(udc->transceiver)) { retval = otg_set_peripheral(udc->transceiver->otg, &udc->gadget); if (retval) { dev_err(&udc->dev->dev, "unable to register peripheral to otg\n"); - if (driver->unbind) { - driver->unbind(&udc->gadget); - udc->gadget.dev.driver = NULL; - udc->driver = NULL; - } + udc->driver = NULL; + udc->gadget.dev.driver = NULL; return retval; } } @@ -1433,13 +1416,13 @@ static int mv_udc_start(struct usb_gadget_driver *driver, return 0; } -static int mv_udc_stop(struct usb_gadget_driver *driver) +static int mv_udc_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; unsigned long flags; - if (!udc) - return -ENODEV; + udc = container_of(gadget, struct mv_udc, gadget); spin_lock_irqsave(&udc->lock, flags); @@ -1454,7 +1437,6 @@ static int mv_udc_stop(struct usb_gadget_driver *driver) spin_unlock_irqrestore(&udc->lock, flags); /* unbind gadget driver */ - driver->unbind(&udc->gadget); udc->gadget.dev.driver = NULL; udc->driver = NULL; @@ -1472,10 +1454,13 @@ static void mv_set_ptc(struct mv_udc *udc, u32 mode) static void prime_status_complete(struct usb_ep *ep, struct usb_request *_req) { - struct mv_udc *udc = the_controller; + struct mv_ep *mvep = container_of(ep, struct mv_ep, ep); struct mv_req *req = container_of(_req, struct mv_req, req); + struct mv_udc *udc; unsigned long flags; + udc = mvep->udc; + dev_info(&udc->dev->dev, "switch to test mode %d\n", req->test_mode); spin_lock_irqsave(&udc->lock, flags); @@ -2123,16 +2108,20 @@ static void mv_udc_vbus_work(struct work_struct *work) /* release device structure */ static void gadget_release(struct device *_dev) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; + + udc = dev_get_drvdata(_dev); complete(udc->done); } static int mv_udc_remove(struct platform_device *dev) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; int clk_i; + udc = platform_get_drvdata(dev); + usb_del_gadget_udc(&udc->gadget); if (udc->qwork) { @@ -2183,8 +2172,6 @@ static int mv_udc_remove(struct platform_device *dev) wait_for_completion(udc->done); kfree(udc); - the_controller = NULL; - return 0; } @@ -2209,7 +2196,6 @@ static int mv_udc_probe(struct platform_device *dev) return -ENOMEM; } - the_controller = udc; udc->done = &release_done; udc->pdata = dev->dev.platform_data; spin_lock_init(&udc->lock); @@ -2400,6 +2386,7 @@ static int mv_udc_probe(struct platform_device *dev) if (retval) goto err_unregister; + platform_set_drvdata(dev, udc); dev_info(&dev->dev, "successful probe UDC device %s clock gating.\n", udc->clock_gating ? "with" : "without"); @@ -2431,15 +2418,16 @@ err_iounmap_capreg: err_put_clk: for (clk_i--; clk_i >= 0; clk_i--) clk_put(udc->clk[clk_i]); - the_controller = NULL; kfree(udc); return retval; } #ifdef CONFIG_PM -static int mv_udc_suspend(struct device *_dev) +static int mv_udc_suspend(struct device *dev) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; + + udc = dev_get_drvdata(dev); /* if OTG is enabled, the following will be done in OTG driver*/ if (!IS_ERR_OR_NULL(udc->transceiver)) @@ -2469,11 +2457,13 @@ static int mv_udc_suspend(struct device *_dev) return 0; } -static int mv_udc_resume(struct device *_dev) +static int mv_udc_resume(struct device *dev) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; int retval; + udc = dev_get_drvdata(dev); + /* if OTG is enabled, the following will be done in OTG driver*/ if (!IS_ERR_OR_NULL(udc->transceiver)) return 0; @@ -2501,9 +2491,10 @@ static const struct dev_pm_ops mv_udc_pm_ops = { static void mv_udc_shutdown(struct platform_device *dev) { - struct mv_udc *udc = the_controller; + struct mv_udc *udc; u32 mode; + udc = platform_get_drvdata(dev); /* reset controller mode to IDLE */ mv_udc_enable(udc); mode = readl(&udc->op_regs->usbmode); -- cgit v1.2.3 From 1a947746dbe1486d0e305ab512ddf085b7874cb3 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 11:56:11 +0200 Subject: usb: dwc3: gadget: change HIRD threshold to 12 First of all, that 28 value makes no sense as HIRD threshold is a 4-bit value, second of all it's causing issues for OMAP5. Using 12 because commit cbc725b3 (usb: dwc3: keep default hird threshold value as 4b1100) had the intention of setting the maximum allowed value of 0xc. Also, original code has been wrong forever, so this should be backported as far back as possible. Cc: Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 38e8d3e5dfd3..77a0013c9dd3 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2225,8 +2225,11 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) reg = dwc3_readl(dwc->regs, DWC3_DCTL); reg &= ~(DWC3_DCTL_HIRD_THRES_MASK | DWC3_DCTL_L1_HIBER_EN); - /* TODO: This should be configurable */ - reg |= DWC3_DCTL_HIRD_THRES(28); + /* + * TODO: This should be configurable. For now using + * maximum allowed HIRD threshold value of 0b1100 + */ + reg |= DWC3_DCTL_HIRD_THRES(12); dwc3_writel(dwc->regs, DWC3_DCTL, reg); } -- cgit v1.2.3 From 45005f6927d98d9a3364287a6e9faca7121cc8f1 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 10:28:39 +0200 Subject: usb: gadget: amd5536udc: convert to udc_start/udc_stop Mechanical change making use of the new (can we still call it new ?) interface for registering UDC drivers. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/amd5536udc.c | 59 ++++++++++------------------------------- drivers/usb/gadget/amd5536udc.h | 2 ++ 2 files changed, 16 insertions(+), 45 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c index fc0ec5e0d58e..3dac001aebf0 100644 --- a/drivers/usb/gadget/amd5536udc.c +++ b/drivers/usb/gadget/amd5536udc.c @@ -1400,15 +1400,16 @@ static int udc_wakeup(struct usb_gadget *gadget) return 0; } -static int amd5536_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)); -static int amd5536_stop(struct usb_gadget_driver *driver); +static int amd5536_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int amd5536_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); /* gadget operations */ static const struct usb_gadget_ops udc_ops = { .wakeup = udc_wakeup, .get_frame = udc_get_frame, - .start = amd5536_start, - .stop = amd5536_stop, + .udc_start = amd5536_udc_start, + .udc_stop = amd5536_udc_stop, }; /* Setups endpoint parameters, adds endpoints to linked list */ @@ -1913,41 +1914,22 @@ static int setup_ep0(struct udc *dev) } /* Called by gadget driver to register itself */ -static int amd5536_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) +static int amd5536_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct udc *dev = udc; - int retval; + struct udc *dev = to_amd5536_udc(g); u32 tmp; - if (!driver || !bind || !driver->setup - || driver->max_speed < USB_SPEED_HIGH) - return -EINVAL; - if (!dev) - return -ENODEV; - if (dev->driver) - return -EBUSY; - driver->driver.bus = NULL; dev->driver = driver; dev->gadget.dev.driver = &driver->driver; - retval = bind(&dev->gadget, driver); - /* Some gadget drivers use both ep0 directions. * NOTE: to gadget driver, ep0 is just one endpoint... */ dev->ep[UDC_EP0OUT_IX].ep.driver_data = dev->ep[UDC_EP0IN_IX].ep.driver_data; - if (retval) { - DBG(dev, "binding to %s returning %d\n", - driver->driver.name, retval); - dev->driver = NULL; - dev->gadget.dev.driver = NULL; - return retval; - } - /* get ready for ep0 traffic */ setup_ep0(dev); @@ -1969,14 +1951,9 @@ __acquires(dev->lock) { int tmp; - if (dev->gadget.speed != USB_SPEED_UNKNOWN) { - spin_unlock(&dev->lock); - driver->disconnect(&dev->gadget); - spin_lock(&dev->lock); - } - /* empty queues and init hardware */ udc_basic_init(dev); + for (tmp = 0; tmp < UDC_EP_NUM; tmp++) empty_req_queue(&dev->ep[tmp]); @@ -1984,23 +1961,18 @@ __acquires(dev->lock) } /* Called by gadget driver to unregister itself */ -static int amd5536_stop(struct usb_gadget_driver *driver) +static int amd5536_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct udc *dev = udc; - unsigned long flags; + struct udc *dev = to_amd5536_udc(g); + unsigned long flags; u32 tmp; - if (!dev) - return -ENODEV; - if (!driver || driver != dev->driver || !driver->unbind) - return -EINVAL; - spin_lock_irqsave(&dev->lock, flags); udc_mask_unused_interrupts(dev); shutdown(dev, driver); spin_unlock_irqrestore(&dev->lock, flags); - driver->unbind(&dev->gadget); dev->gadget.dev.driver = NULL; dev->driver = NULL; @@ -2009,9 +1981,6 @@ static int amd5536_stop(struct usb_gadget_driver *driver) tmp |= AMD_BIT(UDC_DEVCTL_SD); writel(tmp, &dev->regs->ctl); - - DBG(dev, "%s: unregistered\n", driver->driver.name); - return 0; } diff --git a/drivers/usb/gadget/amd5536udc.h b/drivers/usb/gadget/amd5536udc.h index 14af87d65caa..f1bf32e6b8d8 100644 --- a/drivers/usb/gadget/amd5536udc.h +++ b/drivers/usb/gadget/amd5536udc.h @@ -563,6 +563,8 @@ struct udc { u16 cur_alt; }; +#define to_amd5536_udc(g) (container_of((g), struct udc, gadget)) + /* setup request data */ union udc_setup_data { u32 data[2]; -- cgit v1.2.3 From 8de94fffad1b471550645965888d7aaae0680cef Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 10:36:33 +0200 Subject: usb: gadget: fusb300_udc: convert to udc_start/udc_stop Mechanical change making use of the new (can we still call it new ?) interface for registering UDC drivers. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/fusb300_udc.c | 65 +++++++++++----------------------------- drivers/usb/gadget/fusb300_udc.h | 2 ++ 2 files changed, 20 insertions(+), 47 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/fusb300_udc.c b/drivers/usb/gadget/fusb300_udc.c index 72cd5e6719db..8c2372fa294f 100644 --- a/drivers/usb/gadget/fusb300_udc.c +++ b/drivers/usb/gadget/fusb300_udc.c @@ -1308,65 +1308,28 @@ static void init_controller(struct fusb300 *fusb300) iowrite32(0xcfffff9f, fusb300->reg + FUSB300_OFFSET_IGER1); } /*------------------------------------------------------------------------*/ -static struct fusb300 *the_controller; - -static int fusb300_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) +static int fusb300_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct fusb300 *fusb300 = the_controller; - int retval; - - if (!driver - || driver->max_speed < USB_SPEED_FULL - || !bind - || !driver->setup) - return -EINVAL; - - if (!fusb300) - return -ENODEV; - - if (fusb300->driver) - return -EBUSY; + struct fusb300 *fusb300 = to_fusb300(g); /* hook up the driver */ driver->driver.bus = NULL; fusb300->driver = driver; fusb300->gadget.dev.driver = &driver->driver; - retval = device_add(&fusb300->gadget.dev); - if (retval) { - pr_err("device_add error (%d)\n", retval); - goto error; - } - - retval = bind(&fusb300->gadget, driver); - if (retval) { - pr_err("bind to driver error (%d)\n", retval); - device_del(&fusb300->gadget.dev); - goto error; - } - return 0; - -error: - fusb300->driver = NULL; - fusb300->gadget.dev.driver = NULL; - - return retval; } -static int fusb300_udc_stop(struct usb_gadget_driver *driver) +static int fusb300_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct fusb300 *fusb300 = the_controller; - - if (driver != fusb300->driver || !driver->unbind) - return -EINVAL; + struct fusb300 *fusb300 = to_fusb300(g); driver->unbind(&fusb300->gadget); fusb300->gadget.dev.driver = NULL; init_controller(fusb300); - device_del(&fusb300->gadget.dev); fusb300->driver = NULL; return 0; @@ -1380,8 +1343,8 @@ static int fusb300_udc_pullup(struct usb_gadget *_gadget, int is_active) static struct usb_gadget_ops fusb300_gadget_ops = { .pullup = fusb300_udc_pullup, - .start = fusb300_udc_start, - .stop = fusb300_udc_stop, + .udc_start = fusb300_udc_start, + .udc_stop = fusb300_udc_stop, }; static int __exit fusb300_remove(struct platform_device *pdev) @@ -1505,8 +1468,6 @@ static int __init fusb300_probe(struct platform_device *pdev) fusb300->gadget.ep0 = &fusb300->ep[0]->ep; INIT_LIST_HEAD(&fusb300->gadget.ep0->ep_list); - the_controller = fusb300; - fusb300->ep0_req = fusb300_alloc_request(&fusb300->ep[0]->ep, GFP_KERNEL); if (fusb300->ep0_req == NULL) @@ -1517,9 +1478,19 @@ static int __init fusb300_probe(struct platform_device *pdev) if (ret) goto err_add_udc; + ret = device_add(&fusb300->gadget.dev); + if (ret) { + pr_err("device_add error (%d)\n", ret); + goto err_add_device; + } + dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); return 0; + +err_add_device: + usb_del_gadget_udc(&fusb300->gadget); + err_add_udc: fusb300_free_request(&fusb300->ep[0]->ep, fusb300->ep0_req); diff --git a/drivers/usb/gadget/fusb300_udc.h b/drivers/usb/gadget/fusb300_udc.h index 542cd83cc806..6ba444ae8dd5 100644 --- a/drivers/usb/gadget/fusb300_udc.h +++ b/drivers/usb/gadget/fusb300_udc.h @@ -673,4 +673,6 @@ struct fusb300 { u8 reenum; /* if re-enumeration */ }; +#define to_fusb300(g) (container_of((g), struct fusb300, gadget)) + #endif -- cgit v1.2.3 From 950b3c1dac494da885401ad46c8b3de74e02152e Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 10:40:21 +0200 Subject: usb: gadget: goku_udc: convert to udc_start/udc_stop Mechanical change making use of the new (can we still call it new ?) interface for registering UDC drivers. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/goku_udc.c | 70 +++++++++---------------------------------- drivers/usb/gadget/goku_udc.h | 1 + 2 files changed, 15 insertions(+), 56 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c index 51037cb78604..85742d4c67df 100644 --- a/drivers/usb/gadget/goku_udc.c +++ b/drivers/usb/gadget/goku_udc.c @@ -993,14 +993,15 @@ static int goku_get_frame(struct usb_gadget *_gadget) return -EOPNOTSUPP; } -static int goku_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)); -static int goku_stop(struct usb_gadget_driver *driver); +static int goku_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int goku_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops goku_ops = { .get_frame = goku_get_frame, - .start = goku_start, - .stop = goku_stop, + .udc_start = goku_udc_start, + .udc_stop = goku_udc_stop, // no remote wakeup // not selfpowered }; @@ -1339,50 +1340,28 @@ static void udc_enable(struct goku_udc *dev) * - one function driver, initted second */ -static struct goku_udc *the_controller; - /* when a driver is successfully registered, it will receive * control requests including set_configuration(), which enables * non-control requests. then usb traffic follows until a * disconnect is reported. then a host may connect again, or * the driver might get unbound. */ -static int goku_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) +static int goku_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct goku_udc *dev = the_controller; - int retval; - - if (!driver - || driver->max_speed < USB_SPEED_FULL - || !bind - || !driver->disconnect - || !driver->setup) - return -EINVAL; - if (!dev) - return -ENODEV; - if (dev->driver) - return -EBUSY; + struct goku_udc *dev = to_goku_udc(g); /* hook up the driver */ driver->driver.bus = NULL; dev->driver = driver; dev->gadget.dev.driver = &driver->driver; - retval = bind(&dev->gadget, driver); - if (retval) { - DBG(dev, "bind to driver %s --> error %d\n", - driver->driver.name, retval); - dev->driver = NULL; - dev->gadget.dev.driver = NULL; - return retval; - } - /* then enable host detection and ep0; and we're ready + /* + * then enable host detection and ep0; and we're ready * for set_configuration as well as eventual disconnect. */ udc_enable(dev); - DBG(dev, "registered gadget driver '%s'\n", driver->driver.name); return 0; } @@ -1400,35 +1379,23 @@ stop_activity(struct goku_udc *dev, struct usb_gadget_driver *driver) udc_reset (dev); for (i = 0; i < 4; i++) nuke(&dev->ep [i], -ESHUTDOWN); - if (driver) { - spin_unlock(&dev->lock); - driver->disconnect(&dev->gadget); - spin_lock(&dev->lock); - } if (dev->driver) udc_enable(dev); } -static int goku_stop(struct usb_gadget_driver *driver) +static int goku_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct goku_udc *dev = the_controller; + struct goku_udc *dev = to_goku_udc(g); unsigned long flags; - if (!dev) - return -ENODEV; - if (!driver || driver != dev->driver || !driver->unbind) - return -EINVAL; - spin_lock_irqsave(&dev->lock, flags); dev->driver = NULL; stop_activity(dev, driver); spin_unlock_irqrestore(&dev->lock, flags); - - driver->unbind(&dev->gadget); dev->gadget.dev.driver = NULL; - DBG(dev, "unregistered driver '%s'\n", driver->driver.name); return 0; } @@ -1754,7 +1721,6 @@ static void goku_remove(struct pci_dev *pdev) pci_set_drvdata(pdev, NULL); dev->regs = NULL; - the_controller = NULL; INFO(dev, "unbind\n"); } @@ -1770,13 +1736,6 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id) void __iomem *base = NULL; int retval; - /* if you want to support more than one controller in a system, - * usb_gadget_driver_{register,unregister}() must change. - */ - if (the_controller) { - pr_warning("ignoring %s\n", pci_name(pdev)); - return -EBUSY; - } if (!pdev->irq) { printk(KERN_ERR "Check PCI %s IRQ setup!\n", pci_name(pdev)); retval = -ENODEV; @@ -1851,7 +1810,6 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id) create_proc_read_entry(proc_node_name, 0, NULL, udc_proc_read, dev); #endif - the_controller = dev; retval = device_register(&dev->gadget.dev); if (retval) { put_device(&dev->gadget.dev); diff --git a/drivers/usb/gadget/goku_udc.h b/drivers/usb/gadget/goku_udc.h index 85cdce0d1901..b4470d2b1d86 100644 --- a/drivers/usb/gadget/goku_udc.h +++ b/drivers/usb/gadget/goku_udc.h @@ -261,6 +261,7 @@ struct goku_udc { /* statistics... */ unsigned long irqs; }; +#define to_goku_udc(g) (container_of((g), struct goku_udc, gadget)) /*-------------------------------------------------------------------------*/ -- cgit v1.2.3 From eb65796ef161f1b2f959a6ab4b818976054b235d Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 10:43:52 +0200 Subject: usb: gadget: fsl_udc_core: convert to udc_start/udc_stop Mechanical change making use of the new (can we still call it new ?) interface for registering UDC drivers. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/fsl_udc_core.c | 58 ++++++++------------------------------- 1 file changed, 11 insertions(+), 47 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index c19f7f13790b..49642d4ae83c 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -1254,9 +1254,10 @@ static int fsl_pullup(struct usb_gadget *gadget, int is_on) return 0; } -static int fsl_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)); -static int fsl_stop(struct usb_gadget_driver *driver); +static int fsl_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int fsl_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); /* defined in gadget.h */ static struct usb_gadget_ops fsl_gadget_ops = { .get_frame = fsl_get_frame, @@ -1265,8 +1266,8 @@ static struct usb_gadget_ops fsl_gadget_ops = { .vbus_session = fsl_vbus_session, .vbus_draw = fsl_vbus_draw, .pullup = fsl_pullup, - .start = fsl_start, - .stop = fsl_stop, + .udc_start = fsl_udc_start, + .udc_stop = fsl_udc_stop, }; /* Set protocol stall on ep0, protocol stall will automatically be cleared @@ -1950,22 +1951,12 @@ static irqreturn_t fsl_udc_irq(int irq, void *_udc) * Hook to gadget drivers * Called by initialization code of gadget drivers *----------------------------------------------------------------*/ -static int fsl_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) +static int fsl_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - int retval = -ENODEV; + int retval = 0; unsigned long flags = 0; - if (!udc_controller) - return -ENODEV; - - if (!driver || driver->max_speed < USB_SPEED_FULL - || !bind || !driver->disconnect || !driver->setup) - return -EINVAL; - - if (udc_controller->driver) - return -EBUSY; - /* lock is needed but whether should use this lock or another */ spin_lock_irqsave(&udc_controller->lock, flags); @@ -1975,15 +1966,6 @@ static int fsl_start(struct usb_gadget_driver *driver, udc_controller->gadget.dev.driver = &driver->driver; spin_unlock_irqrestore(&udc_controller->lock, flags); - /* bind udc driver to gadget driver */ - retval = bind(&udc_controller->gadget, driver); - if (retval) { - VDBG("bind to %s --> %d", driver->driver.name, retval); - udc_controller->gadget.dev.driver = NULL; - udc_controller->driver = NULL; - goto out; - } - if (!IS_ERR_OR_NULL(udc_controller->transceiver)) { /* Suspend the controller until OTG enable it */ udc_controller->stopped = 1; @@ -2009,28 +1991,17 @@ static int fsl_start(struct usb_gadget_driver *driver, udc_controller->ep0_state = WAIT_FOR_SETUP; udc_controller->ep0_dir = 0; } - printk(KERN_INFO "%s: bind to driver %s\n", - udc_controller->gadget.name, driver->driver.name); -out: - if (retval) - printk(KERN_WARNING "gadget driver register failed %d\n", - retval); return retval; } /* Disconnect from gadget driver */ -static int fsl_stop(struct usb_gadget_driver *driver) +static int fsl_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { struct fsl_ep *loop_ep; unsigned long flags; - if (!udc_controller) - return -ENODEV; - - if (!driver || driver != udc_controller->driver || !driver->unbind) - return -EINVAL; - if (!IS_ERR_OR_NULL(udc_controller->transceiver)) otg_set_peripheral(udc_controller->transceiver->otg, NULL); @@ -2051,16 +2022,9 @@ static int fsl_stop(struct usb_gadget_driver *driver) nuke(loop_ep, -ESHUTDOWN); spin_unlock_irqrestore(&udc_controller->lock, flags); - /* report disconnect; the controller is already quiesced */ - driver->disconnect(&udc_controller->gadget); - - /* unbind gadget and unhook driver. */ - driver->unbind(&udc_controller->gadget); udc_controller->gadget.dev.driver = NULL; udc_controller->driver = NULL; - printk(KERN_WARNING "unregistered gadget driver '%s'\n", - driver->driver.name); return 0; } -- cgit v1.2.3 From 3381fb602d4ae0a6388ba336a29bf999c1744cd6 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 10:49:17 +0200 Subject: usb: gadget: m66592-udc: convert to udc_start/udc_stop Mechanical change making use of the new (can we still call it new ?) interface for registering UDC drivers. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/m66592-udc.c | 70 +++++++++++------------------------------ drivers/usb/gadget/m66592-udc.h | 1 + 2 files changed, 20 insertions(+), 51 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c index b6401f1b56ce..0a35db1ae029 100644 --- a/drivers/usb/gadget/m66592-udc.c +++ b/drivers/usb/gadget/m66592-udc.c @@ -1463,42 +1463,16 @@ static struct usb_ep_ops m66592_ep_ops = { }; /*-------------------------------------------------------------------------*/ -static struct m66592 *the_controller; - -static int m66592_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) +static int m66592_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct m66592 *m66592 = the_controller; - int retval; - - if (!driver - || driver->max_speed < USB_SPEED_HIGH - || !bind - || !driver->setup) - return -EINVAL; - if (!m66592) - return -ENODEV; - if (m66592->driver) - return -EBUSY; + struct m66592 *m66592 = to_m66592(g); /* hook up the driver */ driver->driver.bus = NULL; m66592->driver = driver; m66592->gadget.dev.driver = &driver->driver; - retval = device_add(&m66592->gadget.dev); - if (retval) { - pr_err("device_add error (%d)\n", retval); - goto error; - } - - retval = bind(&m66592->gadget, driver); - if (retval) { - pr_err("bind to driver error (%d)\n", retval); - device_del(&m66592->gadget.dev); - goto error; - } - m66592_bset(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0); if (m66592_read(m66592, M66592_INTSTS0) & M66592_VBSTS) { m66592_start_xclock(m66592); @@ -1510,26 +1484,12 @@ static int m66592_start(struct usb_gadget_driver *driver, } return 0; - -error: - m66592->driver = NULL; - m66592->gadget.dev.driver = NULL; - - return retval; } -static int m66592_stop(struct usb_gadget_driver *driver) +static int m66592_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct m66592 *m66592 = the_controller; - unsigned long flags; - - if (driver != m66592->driver || !driver->unbind) - return -EINVAL; - - spin_lock_irqsave(&m66592->lock, flags); - if (m66592->gadget.speed != USB_SPEED_UNKNOWN) - m66592_usb_disconnect(m66592); - spin_unlock_irqrestore(&m66592->lock, flags); + struct m66592 *m66592 = to_m66592(g); m66592_bclr(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0); @@ -1539,8 +1499,8 @@ static int m66592_stop(struct usb_gadget_driver *driver) init_controller(m66592); disable_controller(m66592); - device_del(&m66592->gadget.dev); m66592->driver = NULL; + return 0; } @@ -1568,8 +1528,8 @@ static int m66592_pullup(struct usb_gadget *gadget, int is_on) static struct usb_gadget_ops m66592_gadget_ops = { .get_frame = m66592_get_frame, - .start = m66592_start, - .stop = m66592_stop, + .udc_start = m66592_udc_start, + .udc_stop = m66592_udc_stop, .pullup = m66592_pullup, }; @@ -1578,6 +1538,7 @@ static int __exit m66592_remove(struct platform_device *pdev) struct m66592 *m66592 = dev_get_drvdata(&pdev->dev); usb_del_gadget_udc(&m66592->gadget); + device_del(&m66592->gadget.dev); del_timer_sync(&m66592->timer); iounmap(m66592->reg); @@ -1706,8 +1667,6 @@ static int __init m66592_probe(struct platform_device *pdev) m66592->pipenum2ep[0] = &m66592->ep[0]; m66592->epaddr2ep[0] = &m66592->ep[0]; - the_controller = m66592; - m66592->ep0_req = m66592_alloc_request(&m66592->ep[0].ep, GFP_KERNEL); if (m66592->ep0_req == NULL) goto clean_up3; @@ -1715,6 +1674,12 @@ static int __init m66592_probe(struct platform_device *pdev) init_controller(m66592); + ret = device_add(&m66592->gadget.dev); + if (ret) { + pr_err("device_add error (%d)\n", ret); + goto err_device_add; + } + ret = usb_add_gadget_udc(&pdev->dev, &m66592->gadget); if (ret) goto err_add_udc; @@ -1723,6 +1688,9 @@ static int __init m66592_probe(struct platform_device *pdev) return 0; err_add_udc: + device_del(&m66592->gadget.dev); + +err_device_add: m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req); clean_up3: diff --git a/drivers/usb/gadget/m66592-udc.h b/drivers/usb/gadget/m66592-udc.h index 16c7e14678b8..96d49d7bfb6b 100644 --- a/drivers/usb/gadget/m66592-udc.h +++ b/drivers/usb/gadget/m66592-udc.h @@ -492,6 +492,7 @@ struct m66592 { int isochronous; int num_dma; }; +#define to_m66592(g) (container_of((g), struct m66592, gadget)) #define gadget_to_m66592(_gadget) container_of(_gadget, struct m66592, gadget) #define m66592_to_gadget(m66592) (&m66592->gadget) -- cgit v1.2.3 From 1bf0cf6040b31d715265af89a6ad8b4b40904c87 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 10:52:52 +0200 Subject: usb: gadget: omap_udc: convert to udc_start/udc_stop Mechanical change making use of the new (can we still call it new ?) interface for registering UDC drivers. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/omap_udc.c | 49 +++++++++++-------------------------------- 1 file changed, 12 insertions(+), 37 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c index 8bfe990caf1a..d0c87b15b9a3 100644 --- a/drivers/usb/gadget/omap_udc.c +++ b/drivers/usb/gadget/omap_udc.c @@ -1309,9 +1309,10 @@ static int omap_pullup(struct usb_gadget *gadget, int is_on) return 0; } -static int omap_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)); -static int omap_udc_stop(struct usb_gadget_driver *driver); +static int omap_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) +static int omap_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); static struct usb_gadget_ops omap_gadget_ops = { .get_frame = omap_get_frame, @@ -1320,8 +1321,8 @@ static struct usb_gadget_ops omap_gadget_ops = { .vbus_session = omap_vbus_session, .vbus_draw = omap_vbus_draw, .pullup = omap_pullup, - .start = omap_udc_start, - .stop = omap_udc_stop, + .udc_start = omap_udc_start, + .udc_stop = omap_udc_stop, }; /*-------------------------------------------------------------------------*/ @@ -2041,28 +2042,15 @@ static inline int machine_without_vbus_sense(void) || cpu_is_omap7xx(); } -static int omap_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) +static int omap_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { int status = -ENODEV; struct omap_ep *ep; unsigned long flags; - /* basic sanity tests */ - if (!udc) - return -ENODEV; - if (!driver - /* FIXME if otg, check: driver->is_otg */ - || driver->max_speed < USB_SPEED_FULL - || !bind || !driver->setup) - return -EINVAL; spin_lock_irqsave(&udc->lock, flags); - if (udc->driver) { - spin_unlock_irqrestore(&udc->lock, flags); - return -EBUSY; - } - /* reset state */ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { ep->irqs = 0; @@ -2084,15 +2072,6 @@ static int omap_udc_start(struct usb_gadget_driver *driver, if (udc->dc_clk != NULL) omap_udc_enable_clock(1); - status = bind(&udc->gadget, driver); - if (status) { - DBG("bind to %s --> %d\n", driver->driver.name, status); - udc->gadget.dev.driver = NULL; - udc->driver = NULL; - goto done; - } - DBG("bound to driver %s\n", driver->driver.name); - omap_writew(UDC_IRQ_SRC_MASK, UDC_IRQ_SRC); /* connect to bus through transceiver */ @@ -2124,19 +2103,16 @@ static int omap_udc_start(struct usb_gadget_driver *driver, done: if (udc->dc_clk != NULL) omap_udc_enable_clock(0); + return status; } -static int omap_udc_stop(struct usb_gadget_driver *driver) +static int omap_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { unsigned long flags; int status = -ENODEV; - if (!udc) - return -ENODEV; - if (!driver || driver != udc->driver || !driver->unbind) - return -EINVAL; - if (udc->dc_clk != NULL) omap_udc_enable_clock(1); @@ -2152,13 +2128,12 @@ static int omap_udc_stop(struct usb_gadget_driver *driver) udc_quiesce(udc); spin_unlock_irqrestore(&udc->lock, flags); - driver->unbind(&udc->gadget); udc->gadget.dev.driver = NULL; udc->driver = NULL; if (udc->dc_clk != NULL) omap_udc_enable_clock(0); - DBG("unregistered driver '%s'\n", driver->driver.name); + return status; } -- cgit v1.2.3 From 1fb3b1cffc58a82c3887c5101b496771e106e913 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 10:55:59 +0200 Subject: usb: gadget: pch_udc: convert to udc_start/udc_stop Mechanical change making use of the new (can we still call it new ?) interface for registering UDC drivers. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/pch_udc.c | 67 +++++++++----------------------------------- 1 file changed, 14 insertions(+), 53 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c index 6490c0040e3a..a787a8ef672b 100644 --- a/drivers/usb/gadget/pch_udc.c +++ b/drivers/usb/gadget/pch_udc.c @@ -375,6 +375,7 @@ struct pch_udc_dev { struct pch_udc_cfg_data cfg_data; struct pch_vbus_gpio_data vbus_gpio; }; +#define to_pch_udc(g) (container_of((g), struct pch_udc_dev, gadget)) #define PCH_UDC_PCI_BAR 1 #define PCI_DEVICE_ID_INTEL_EG20T_UDC 0x8808 @@ -384,7 +385,6 @@ struct pch_udc_dev { static const char ep0_string[] = "ep0in"; static DEFINE_SPINLOCK(udc_stall_spinlock); /* stall spin lock */ -struct pch_udc_dev *pch_udc; /* pointer to device object */ static bool speed_fs; module_param_named(speed_fs, speed_fs, bool, S_IRUGO); MODULE_PARM_DESC(speed_fs, "true for Full speed operation"); @@ -1235,9 +1235,10 @@ static int pch_udc_pcd_vbus_draw(struct usb_gadget *gadget, unsigned int mA) return -EOPNOTSUPP; } -static int pch_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)); -static int pch_udc_stop(struct usb_gadget_driver *driver); +static int pch_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int pch_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops pch_udc_ops = { .get_frame = pch_udc_pcd_get_frame, .wakeup = pch_udc_pcd_wakeup, @@ -1245,8 +1246,8 @@ static const struct usb_gadget_ops pch_udc_ops = { .pullup = pch_udc_pcd_pullup, .vbus_session = pch_udc_pcd_vbus_session, .vbus_draw = pch_udc_pcd_vbus_draw, - .start = pch_udc_start, - .stop = pch_udc_stop, + .udc_start = pch_udc_start, + .udc_stop = pch_udc_stop, }; /** @@ -2981,40 +2982,15 @@ static int init_dma_pools(struct pch_udc_dev *dev) return 0; } -static int pch_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) +static int pch_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct pch_udc_dev *dev = pch_udc; - int retval; - - if (!driver || (driver->max_speed == USB_SPEED_UNKNOWN) || !bind || - !driver->setup || !driver->unbind || !driver->disconnect) { - dev_err(&dev->pdev->dev, - "%s: invalid driver parameter\n", __func__); - return -EINVAL; - } + struct pch_udc_dev *dev = to_pch_udc(g); - if (!dev) - return -ENODEV; - - if (dev->driver) { - dev_err(&dev->pdev->dev, "%s: already bound\n", __func__); - return -EBUSY; - } driver->driver.bus = NULL; dev->driver = driver; dev->gadget.dev.driver = &driver->driver; - /* Invoke the bind routine of the gadget driver */ - retval = bind(&dev->gadget, driver); - - if (retval) { - dev_err(&dev->pdev->dev, "%s: binding to %s returning %d\n", - __func__, driver->driver.name, retval); - dev->driver = NULL; - dev->gadget.dev.driver = NULL; - return retval; - } /* get ready for ep0 traffic */ pch_udc_setup_ep0(dev); @@ -3026,30 +3002,21 @@ static int pch_udc_start(struct usb_gadget_driver *driver, return 0; } -static int pch_udc_stop(struct usb_gadget_driver *driver) +static int pch_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct pch_udc_dev *dev = pch_udc; - - if (!dev) - return -ENODEV; - - if (!driver || (driver != dev->driver)) { - dev_err(&dev->pdev->dev, - "%s: invalid driver parameter\n", __func__); - return -EINVAL; - } + struct pch_udc_dev *dev = to_pch_udc(g); pch_udc_disable_interrupts(dev, UDC_DEVINT_MSK); /* Assures that there are no pending requests with this driver */ - driver->disconnect(&dev->gadget); - driver->unbind(&dev->gadget); dev->gadget.dev.driver = NULL; dev->driver = NULL; dev->connected = 0; /* set SD */ pch_udc_set_disconnect(dev); + return 0; } @@ -3164,11 +3131,6 @@ static int pch_udc_probe(struct pci_dev *pdev, int retval; struct pch_udc_dev *dev; - /* one udc only */ - if (pch_udc) { - pr_err("%s: already probed\n", __func__); - return -EBUSY; - } /* init */ dev = kzalloc(sizeof *dev, GFP_KERNEL); if (!dev) { @@ -3207,7 +3169,6 @@ static int pch_udc_probe(struct pci_dev *pdev, retval = -ENODEV; goto finished; } - pch_udc = dev; /* initialize the hardware */ if (pch_udc_pcd_init(dev)) { retval = -ENODEV; -- cgit v1.2.3 From 6166c24669678662547bb4e5dbd6a810268b8b7b Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 17:11:44 +0200 Subject: usb: gadget: pxa25x_udc: convert to udc_start/udc_stop Mechanical change making use of the new (can we still call it new ?) interface for registering UDC drivers. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/pxa25x_udc.c | 62 ++++++++++------------------------------- drivers/usb/gadget/pxa25x_udc.h | 1 + 2 files changed, 15 insertions(+), 48 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index d4ca9f1f7f24..fa9c34469a82 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -996,9 +996,10 @@ static int pxa25x_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA) return -EOPNOTSUPP; } -static int pxa25x_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)); -static int pxa25x_stop(struct usb_gadget_driver *driver); +static int pxa25x_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int pxa25x_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops pxa25x_udc_ops = { .get_frame = pxa25x_udc_get_frame, @@ -1006,8 +1007,8 @@ static const struct usb_gadget_ops pxa25x_udc_ops = { .vbus_session = pxa25x_udc_vbus_session, .pullup = pxa25x_udc_pullup, .vbus_draw = pxa25x_udc_vbus_draw, - .start = pxa25x_start, - .stop = pxa25x_stop, + .udc_start = pxa25x_udc_start, + .udc_stop = pxa25x_udc_stop, }; /*-------------------------------------------------------------------------*/ @@ -1254,23 +1255,12 @@ static void udc_enable (struct pxa25x_udc *dev) * disconnect is reported. then a host may connect again, or * the driver might get unbound. */ -static int pxa25x_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) +static int pxa25x_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct pxa25x_udc *dev = the_controller; + struct pxa25x_udc *dev = to_pxa25x(g); int retval; - if (!driver - || driver->max_speed < USB_SPEED_FULL - || !bind - || !driver->disconnect - || !driver->setup) - return -EINVAL; - if (!dev) - return -ENODEV; - if (dev->driver) - return -EBUSY; - /* first hook up the driver ... */ dev->driver = driver; dev->gadget.dev.driver = &driver->driver; @@ -1278,34 +1268,20 @@ static int pxa25x_start(struct usb_gadget_driver *driver, retval = device_add (&dev->gadget.dev); if (retval) { -fail: dev->driver = NULL; dev->gadget.dev.driver = NULL; return retval; } - retval = bind(&dev->gadget, driver); - if (retval) { - DMSG("bind to driver %s --> error %d\n", - driver->driver.name, retval); - device_del (&dev->gadget.dev); - goto fail; - } /* ... then enable host detection and ep0; and we're ready * for set_configuration as well as eventual disconnect. */ - DMSG("registered gadget driver '%s'\n", driver->driver.name); - /* connect to bus through transceiver */ if (!IS_ERR_OR_NULL(dev->transceiver)) { retval = otg_set_peripheral(dev->transceiver->otg, &dev->gadget); - if (retval) { - DMSG("can't bind to transceiver\n"); - if (driver->unbind) - driver->unbind(&dev->gadget); + if (retval) goto bind_fail; - } } pullup(dev); @@ -1334,22 +1310,14 @@ stop_activity(struct pxa25x_udc *dev, struct usb_gadget_driver *driver) } del_timer_sync(&dev->timer); - /* report disconnect; the driver is already quiesced */ - if (driver) - driver->disconnect(&dev->gadget); - /* re-init driver-visible data structures */ udc_reinit(dev); } -static int pxa25x_stop(struct usb_gadget_driver *driver) +static int pxa25x_udc_stop(struct usb_gadget*g, + struct usb_gadget_driver *driver) { - struct pxa25x_udc *dev = the_controller; - - if (!dev) - return -ENODEV; - if (!driver || driver != dev->driver || !driver->unbind) - return -EINVAL; + struct pxa25x_udc *dev = to_pxa25x(g); local_irq_disable(); dev->pullup = 0; @@ -1360,14 +1328,12 @@ static int pxa25x_stop(struct usb_gadget_driver *driver) if (!IS_ERR_OR_NULL(dev->transceiver)) (void) otg_set_peripheral(dev->transceiver->otg, NULL); - driver->unbind(&dev->gadget); dev->gadget.dev.driver = NULL; dev->driver = NULL; device_del (&dev->gadget.dev); - - DMSG("unregistered gadget driver '%s'\n", driver->driver.name); dump_state(dev); + return 0; } diff --git a/drivers/usb/gadget/pxa25x_udc.h b/drivers/usb/gadget/pxa25x_udc.h index 2eca1e71fecd..3fe5931dc21a 100644 --- a/drivers/usb/gadget/pxa25x_udc.h +++ b/drivers/usb/gadget/pxa25x_udc.h @@ -126,6 +126,7 @@ struct pxa25x_udc { struct dentry *debugfs_udc; #endif }; +#define to_pxa25x(g) (container_of((g), struct pxa25x_udc, gadget)) /*-------------------------------------------------------------------------*/ -- cgit v1.2.3 From 70189a63d408d4ea0cddbf0ff0afe6020844e813 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 17:16:39 +0200 Subject: usb: gadget: pxa27x_udc: convert to udc_start/udc_stop Mechanical change making use of the new (can we still call it new ?) interface for registering UDC drivers. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/pxa27x_udc.c | 61 ++++++++++------------------------------- drivers/usb/gadget/pxa27x_udc.h | 1 + 2 files changed, 16 insertions(+), 46 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c index 2b3b01d5f403..f7d25795821a 100644 --- a/drivers/usb/gadget/pxa27x_udc.c +++ b/drivers/usb/gadget/pxa27x_udc.c @@ -1671,9 +1671,10 @@ static int pxa_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA) return -EOPNOTSUPP; } -static int pxa27x_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)); -static int pxa27x_udc_stop(struct usb_gadget_driver *driver); +static int pxa27x_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int pxa27x_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops pxa_udc_ops = { .get_frame = pxa_udc_get_frame, @@ -1681,8 +1682,8 @@ static const struct usb_gadget_ops pxa_udc_ops = { .pullup = pxa_udc_pullup, .vbus_session = pxa_udc_vbus_session, .vbus_draw = pxa_udc_vbus_draw, - .start = pxa27x_udc_start, - .stop = pxa27x_udc_stop, + .udc_start = pxa27x_udc_start, + .udc_stop = pxa27x_udc_stop, }; /** @@ -1802,20 +1803,12 @@ static void udc_enable(struct pxa_udc *udc) * * Returns 0 if no error, -EINVAL, -ENODEV, -EBUSY otherwise */ -static int pxa27x_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) +static int pxa27x_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct pxa_udc *udc = the_controller; + struct pxa_udc *udc = to_pxa(g); int retval; - if (!driver || driver->max_speed < USB_SPEED_FULL || !bind - || !driver->disconnect || !driver->setup) - return -EINVAL; - if (!udc) - return -ENODEV; - if (udc->driver) - return -EBUSY; - /* first hook up the driver ... */ udc->driver = driver; udc->gadget.dev.driver = &driver->driver; @@ -1824,23 +1817,14 @@ static int pxa27x_udc_start(struct usb_gadget_driver *driver, retval = device_add(&udc->gadget.dev); if (retval) { dev_err(udc->dev, "device_add error %d\n", retval); - goto add_fail; + goto fail; } - retval = bind(&udc->gadget, driver); - if (retval) { - dev_err(udc->dev, "bind to driver %s --> error %d\n", - driver->driver.name, retval); - goto bind_fail; - } - dev_dbg(udc->dev, "registered gadget driver '%s'\n", - driver->driver.name); - if (!IS_ERR_OR_NULL(udc->transceiver)) { retval = otg_set_peripheral(udc->transceiver->otg, &udc->gadget); if (retval) { dev_err(udc->dev, "can't bind to transceiver\n"); - goto transceiver_fail; + goto fail; } } @@ -1848,12 +1832,7 @@ static int pxa27x_udc_start(struct usb_gadget_driver *driver, udc_enable(udc); return 0; -transceiver_fail: - if (driver->unbind) - driver->unbind(&udc->gadget); -bind_fail: - device_del(&udc->gadget.dev); -add_fail: +fail: udc->driver = NULL; udc->gadget.dev.driver = NULL; return retval; @@ -1878,9 +1857,6 @@ static void stop_activity(struct pxa_udc *udc, struct usb_gadget_driver *driver) for (i = 0; i < NR_USB_ENDPOINTS; i++) pxa_ep_disable(&udc->udc_usb_ep[i].usb_ep); - - if (driver) - driver->disconnect(&udc->gadget); } /** @@ -1889,25 +1865,18 @@ static void stop_activity(struct pxa_udc *udc, struct usb_gadget_driver *driver) * * Returns 0 if no error, -ENODEV, -EINVAL otherwise */ -static int pxa27x_udc_stop(struct usb_gadget_driver *driver) +static int pxa27x_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct pxa_udc *udc = the_controller; - - if (!udc) - return -ENODEV; - if (!driver || driver != udc->driver || !driver->unbind) - return -EINVAL; + struct pxa_udc *udc = to_pxa(g); stop_activity(udc, driver); udc_disable(udc); dplus_pullup(udc, 0); - driver->unbind(&udc->gadget); udc->driver = NULL; device_del(&udc->gadget.dev); - dev_info(udc->dev, "unregistered gadget driver '%s'\n", - driver->driver.name); if (!IS_ERR_OR_NULL(udc->transceiver)) return otg_set_peripheral(udc->transceiver->otg, NULL); diff --git a/drivers/usb/gadget/pxa27x_udc.h b/drivers/usb/gadget/pxa27x_udc.h index 79d81a4b2344..28f2b53530f5 100644 --- a/drivers/usb/gadget/pxa27x_udc.h +++ b/drivers/usb/gadget/pxa27x_udc.h @@ -473,6 +473,7 @@ struct pxa_udc { struct dentry *debugfs_eps; #endif }; +#define to_pxa(g) (container_of((g), struct pxa_udc, gadget)) static inline struct pxa_udc *to_gadget_udc(struct usb_gadget *gadget) { -- cgit v1.2.3 From 4991e102c11524aff42ce3a0e7caeb6e5577808c Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 17:20:46 +0200 Subject: usb: gadget: s3c2410: convert to udc_start/udc_stop Mechanical change making use of the new (can we still call it new ?) interface for registering UDC drivers. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c2410_udc.c | 65 ++++++++-------------------------------- drivers/usb/gadget/s3c2410_udc.h | 1 + 2 files changed, 13 insertions(+), 53 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c index a2fa6e16d019..fc07b4381286 100644 --- a/drivers/usb/gadget/s3c2410_udc.c +++ b/drivers/usb/gadget/s3c2410_udc.c @@ -1538,9 +1538,10 @@ static int s3c2410_vbus_draw(struct usb_gadget *_gadget, unsigned ma) return -ENOTSUPP; } -static int s3c2410_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)); -static int s3c2410_udc_stop(struct usb_gadget_driver *driver); +static int s3c2410_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int s3c2410_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); static const struct usb_gadget_ops s3c2410_ops = { .get_frame = s3c2410_udc_get_frame, @@ -1549,8 +1550,8 @@ static const struct usb_gadget_ops s3c2410_ops = { .pullup = s3c2410_udc_pullup, .vbus_session = s3c2410_udc_vbus_session, .vbus_draw = s3c2410_vbus_draw, - .start = s3c2410_udc_start, - .stop = s3c2410_udc_stop, + .udc_start = s3c2410_udc_start, + .udc_stop = s3c2410_udc_stop, }; static void s3c2410_udc_command(enum s3c2410_udc_cmd_e cmd) @@ -1664,33 +1665,14 @@ static void s3c2410_udc_enable(struct s3c2410_udc *dev) s3c2410_udc_command(S3C2410_UDC_P_ENABLE); } -static int s3c2410_udc_start(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) +static int s3c2410_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct s3c2410_udc *udc = the_controller; + struct s3c2410_udc *udc = to_s3c2410(g) int retval; dprintk(DEBUG_NORMAL, "%s() '%s'\n", __func__, driver->driver.name); - /* Sanity checks */ - if (!udc) - return -ENODEV; - - if (udc->driver) - return -EBUSY; - - if (!bind || !driver->setup || driver->max_speed < USB_SPEED_FULL) { - dev_err(&udc->gadget.dev, "Invalid driver: bind %p setup %p speed %d\n", - bind, driver->setup, driver->max_speed); - return -EINVAL; - } -#if defined(MODULE) - if (!driver->unbind) { - dev_err(&udc->gadget.dev, "Invalid driver: no unbind method\n"); - return -EINVAL; - } -#endif - /* Hook the driver */ udc->driver = driver; udc->gadget.dev.driver = &driver->driver; @@ -1702,15 +1684,6 @@ static int s3c2410_udc_start(struct usb_gadget_driver *driver, goto register_error; } - dprintk(DEBUG_NORMAL, "binding gadget driver '%s'\n", - driver->driver.name); - - retval = bind(&udc->gadget, driver); - if (retval) { - device_del(&udc->gadget.dev); - goto register_error; - } - /* Enable udc */ s3c2410_udc_enable(udc); @@ -1722,24 +1695,10 @@ register_error: return retval; } -static int s3c2410_udc_stop(struct usb_gadget_driver *driver) +static int s3c2410_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - struct s3c2410_udc *udc = the_controller; - - if (!udc) - return -ENODEV; - - if (!driver || driver != udc->driver || !driver->unbind) - return -EINVAL; - - dprintk(DEBUG_NORMAL, "usb_gadget_unregister_driver() '%s'\n", - driver->driver.name); - - /* report disconnect */ - if (driver->disconnect) - driver->disconnect(&udc->gadget); - - driver->unbind(&udc->gadget); + struct s3c2410_udc *udc = to_s3c2410(g); device_del(&udc->gadget.dev); udc->driver = NULL; diff --git a/drivers/usb/gadget/s3c2410_udc.h b/drivers/usb/gadget/s3c2410_udc.h index 3e80fd5c820f..93bf225f1969 100644 --- a/drivers/usb/gadget/s3c2410_udc.h +++ b/drivers/usb/gadget/s3c2410_udc.h @@ -95,5 +95,6 @@ struct s3c2410_udc { u8 vbus; struct dentry *regs_info; }; +#define to_s3c2410(g) (container_of((g), struct s3c2410_udc, gadget)) #endif -- cgit v1.2.3 From 2d7ebbb0946e9e13285eee348df1dbc48f0580e0 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 11:00:15 +0200 Subject: usb: gadget: completely remove ->start/->stop Those have been deprecated for a long time and previous patches just converted all remaining users of those. Since there are no in-tree users and we don't want any new users for them, let's obliterate every piece of code related to those calls. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc-core.c | 89 +++++++------------------------------------ include/linux/usb/gadget.h | 6 --- 2 files changed, 14 insertions(+), 81 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c index e7c591621a3b..2a9cd369f71c 100644 --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -101,28 +101,6 @@ EXPORT_SYMBOL_GPL(usb_gadget_unmap_request); /* ------------------------------------------------------------------------- */ -/** - * usb_gadget_start - tells usb device controller to start up - * @gadget: The gadget we want to get started - * @driver: The driver we want to bind to @gadget - * @bind: The bind function for @driver - * - * This call is issued by the UDC Class driver when it's about - * to register a gadget driver to the device controller, before - * calling gadget driver's bind() method. - * - * It allows the controller to be powered off until strictly - * necessary to have it powered on. - * - * Returns zero on success, else negative errno. - */ -static inline int usb_gadget_start(struct usb_gadget *gadget, - struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *, struct usb_gadget_driver *)) -{ - return gadget->ops->start(driver, bind); -} - /** * usb_gadget_udc_start - tells usb device controller to start up * @gadget: The gadget we want to get started @@ -143,24 +121,6 @@ static inline int usb_gadget_udc_start(struct usb_gadget *gadget, return gadget->ops->udc_start(gadget, driver); } -/** - * usb_gadget_stop - tells usb device controller we don't need it anymore - * @gadget: The device we want to stop activity - * @driver: The driver to unbind from @gadget - * - * This call is issued by the UDC Class driver after calling - * gadget driver's unbind() method. - * - * The details are implementation specific, but it can go as - * far as powering off UDC completely and disable its data - * line pullups. - */ -static inline void usb_gadget_stop(struct usb_gadget *gadget, - struct usb_gadget_driver *driver) -{ - gadget->ops->stop(driver); -} - /** * usb_gadget_udc_stop - tells usb device controller we don't need it anymore * @gadget: The device we want to stop activity @@ -246,14 +206,6 @@ err1: } EXPORT_SYMBOL_GPL(usb_add_gadget_udc); -static int udc_is_newstyle(struct usb_udc *udc) -{ - if (udc->gadget->ops->udc_start && udc->gadget->ops->udc_stop) - return 1; - return 0; -} - - static void usb_gadget_remove_driver(struct usb_udc *udc) { dev_dbg(&udc->dev, "unregistering UDC driver [%s]\n", @@ -261,14 +213,10 @@ static void usb_gadget_remove_driver(struct usb_udc *udc) kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE); - if (udc_is_newstyle(udc)) { - usb_gadget_disconnect(udc->gadget); - udc->driver->disconnect(udc->gadget); - udc->driver->unbind(udc->gadget); - usb_gadget_udc_stop(udc->gadget, udc->driver); - } else { - usb_gadget_stop(udc->gadget, udc->driver); - } + usb_gadget_disconnect(udc->gadget); + udc->driver->disconnect(udc->gadget); + udc->driver->unbind(udc->gadget); + usb_gadget_udc_stop(udc->gadget, udc->driver); udc->driver = NULL; udc->dev.driver = NULL; @@ -321,22 +269,15 @@ static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *dri udc->driver = driver; udc->dev.driver = &driver->driver; - if (udc_is_newstyle(udc)) { - ret = driver->bind(udc->gadget, driver); - if (ret) - goto err1; - ret = usb_gadget_udc_start(udc->gadget, driver); - if (ret) { - driver->unbind(udc->gadget); - goto err1; - } - usb_gadget_connect(udc->gadget); - } else { - - ret = usb_gadget_start(udc->gadget, driver, driver->bind); - if (ret) - goto err1; + ret = driver->bind(udc->gadget, driver); + if (ret) + goto err1; + ret = usb_gadget_udc_start(udc->gadget, driver); + if (ret) { + driver->unbind(udc->gadget); + goto err1; } + usb_gadget_connect(udc->gadget); kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE); return 0; @@ -440,13 +381,11 @@ static ssize_t usb_udc_softconn_store(struct device *dev, struct usb_udc *udc = container_of(dev, struct usb_udc, dev); if (sysfs_streq(buf, "connect")) { - if (udc_is_newstyle(udc)) - usb_gadget_udc_start(udc->gadget, udc->driver); + usb_gadget_udc_start(udc->gadget, udc->driver); usb_gadget_connect(udc->gadget); } else if (sysfs_streq(buf, "disconnect")) { usb_gadget_disconnect(udc->gadget); - if (udc_is_newstyle(udc)) - usb_gadget_udc_stop(udc->gadget, udc->driver); + usb_gadget_udc_stop(udc->gadget, udc->driver); } else { dev_err(dev, "unsupported command '%s'\n", buf); return -EINVAL; diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index e4c119ee4ebe..2e297e80d59a 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -471,12 +471,6 @@ struct usb_gadget_ops { struct usb_gadget_driver *); int (*udc_stop)(struct usb_gadget *, struct usb_gadget_driver *); - - /* Those two are deprecated */ - int (*start)(struct usb_gadget_driver *, - int (*bind)(struct usb_gadget *, - struct usb_gadget_driver *driver)); - int (*stop)(struct usb_gadget_driver *); }; /** -- cgit v1.2.3 From 3517c31a8ece660aadcbabd4ac98611cedb7af04 Mon Sep 17 00:00:00 2001 From: Chao Xie Date: Thu, 24 Jan 2013 01:38:26 -0500 Subject: usb: gadget: mv_udc: use devm_xxx for probe use devm_xxx for udc driver probe. So we do need care about the resources release in driver remove or failure handling in driver probe. Signed-off-by: Chao Xie Signed-off-by: Felipe Balbi --- drivers/usb/gadget/mv_udc_core.c | 156 ++++++++++++++------------------------- 1 file changed, 56 insertions(+), 100 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index 8a8507a9f053..687b569669bf 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -2115,12 +2115,11 @@ static void gadget_release(struct device *_dev) complete(udc->done); } -static int mv_udc_remove(struct platform_device *dev) +static int mv_udc_remove(struct platform_device *pdev) { struct mv_udc *udc; - int clk_i; - udc = platform_get_drvdata(dev); + udc = platform_get_drvdata(pdev); usb_del_gadget_udc(&udc->gadget); @@ -2129,55 +2128,27 @@ static int mv_udc_remove(struct platform_device *dev) destroy_workqueue(udc->qwork); } - /* - * If we have transceiver inited, - * then vbus irq will not be requested in udc driver. - */ - if (udc->pdata && udc->pdata->vbus - && udc->clock_gating && IS_ERR_OR_NULL(udc->transceiver)) - free_irq(udc->pdata->vbus->irq, &dev->dev); - /* free memory allocated in probe */ if (udc->dtd_pool) dma_pool_destroy(udc->dtd_pool); if (udc->ep_dqh) - dma_free_coherent(&dev->dev, udc->ep_dqh_size, + dma_free_coherent(&pdev->dev, udc->ep_dqh_size, udc->ep_dqh, udc->ep_dqh_dma); - kfree(udc->eps); - - if (udc->irq) - free_irq(udc->irq, &dev->dev); - mv_udc_disable(udc); - if (udc->cap_regs) - iounmap(udc->cap_regs); - - if (udc->phy_regs) - iounmap(udc->phy_regs); - - if (udc->status_req) { - kfree(udc->status_req->req.buf); - kfree(udc->status_req); - } - - for (clk_i = 0; clk_i <= udc->clknum; clk_i++) - clk_put(udc->clk[clk_i]); - device_unregister(&udc->gadget.dev); /* free dev, wait for the release() finished */ wait_for_completion(udc->done); - kfree(udc); return 0; } -static int mv_udc_probe(struct platform_device *dev) +static int mv_udc_probe(struct platform_device *pdev) { - struct mv_usb_platform_data *pdata = dev->dev.platform_data; + struct mv_usb_platform_data *pdata = pdev->dev.platform_data; struct mv_udc *udc; int retval = 0; int clk_i = 0; @@ -2185,70 +2156,68 @@ static int mv_udc_probe(struct platform_device *dev) size_t size; if (pdata == NULL) { - dev_err(&dev->dev, "missing platform_data\n"); + dev_err(&pdev->dev, "missing platform_data\n"); return -ENODEV; } size = sizeof(*udc) + sizeof(struct clk *) * pdata->clknum; - udc = kzalloc(size, GFP_KERNEL); + udc = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); if (udc == NULL) { - dev_err(&dev->dev, "failed to allocate memory for udc\n"); + dev_err(&pdev->dev, "failed to allocate memory for udc\n"); return -ENOMEM; } udc->done = &release_done; - udc->pdata = dev->dev.platform_data; + udc->pdata = pdev->dev.platform_data; spin_lock_init(&udc->lock); - udc->dev = dev; + udc->dev = pdev; #ifdef CONFIG_USB_OTG_UTILS if (pdata->mode == MV_USB_MODE_OTG) - udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); + udc->transceiver = devm_usb_get_phy(&pdev->dev, + USB_PHY_TYPE_USB2); #endif udc->clknum = pdata->clknum; for (clk_i = 0; clk_i < udc->clknum; clk_i++) { - udc->clk[clk_i] = clk_get(&dev->dev, pdata->clkname[clk_i]); + udc->clk[clk_i] = devm_clk_get(&pdev->dev, + pdata->clkname[clk_i]); if (IS_ERR(udc->clk[clk_i])) { retval = PTR_ERR(udc->clk[clk_i]); - goto err_put_clk; + return retval; } } r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "capregs"); if (r == NULL) { - dev_err(&dev->dev, "no I/O memory resource defined\n"); - retval = -ENODEV; - goto err_put_clk; + dev_err(&pdev->dev, "no I/O memory resource defined\n"); + return -ENODEV; } udc->cap_regs = (struct mv_cap_regs __iomem *) - ioremap(r->start, resource_size(r)); + devm_ioremap(&pdev->dev, r->start, resource_size(r)); if (udc->cap_regs == NULL) { - dev_err(&dev->dev, "failed to map I/O memory\n"); - retval = -EBUSY; - goto err_put_clk; + dev_err(&pdev->dev, "failed to map I/O memory\n"); + return -EBUSY; } r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "phyregs"); if (r == NULL) { - dev_err(&dev->dev, "no phy I/O memory resource defined\n"); - retval = -ENODEV; - goto err_iounmap_capreg; + dev_err(&pdev->dev, "no phy I/O memory resource defined\n"); + return -ENODEV; } udc->phy_regs = ioremap(r->start, resource_size(r)); if (udc->phy_regs == NULL) { - dev_err(&dev->dev, "failed to map phy I/O memory\n"); - retval = -EBUSY; - goto err_iounmap_capreg; + dev_err(&pdev->dev, "failed to map phy I/O memory\n"); + return -EBUSY; } /* we will acces controller register, so enable the clk */ retval = mv_udc_enable_internal(udc); if (retval) - goto err_iounmap_phyreg; + return retval; udc->op_regs = (struct mv_op_regs __iomem *)((unsigned long)udc->cap_regs @@ -2265,11 +2234,11 @@ static int mv_udc_probe(struct platform_device *dev) size = udc->max_eps * sizeof(struct mv_dqh) *2; size = (size + DQH_ALIGNMENT - 1) & ~(DQH_ALIGNMENT - 1); - udc->ep_dqh = dma_alloc_coherent(&dev->dev, size, + udc->ep_dqh = dma_alloc_coherent(&pdev->dev, size, &udc->ep_dqh_dma, GFP_KERNEL); if (udc->ep_dqh == NULL) { - dev_err(&dev->dev, "allocate dQH memory failed\n"); + dev_err(&pdev->dev, "allocate dQH memory failed\n"); retval = -ENOMEM; goto err_disable_clock; } @@ -2277,7 +2246,7 @@ static int mv_udc_probe(struct platform_device *dev) /* create dTD dma_pool resource */ udc->dtd_pool = dma_pool_create("mv_dtd", - &dev->dev, + &pdev->dev, sizeof(struct mv_dtd), DTD_ALIGNMENT, DMA_BOUNDARY); @@ -2288,19 +2257,20 @@ static int mv_udc_probe(struct platform_device *dev) } size = udc->max_eps * sizeof(struct mv_ep) *2; - udc->eps = kzalloc(size, GFP_KERNEL); + udc->eps = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); if (udc->eps == NULL) { - dev_err(&dev->dev, "allocate ep memory failed\n"); + dev_err(&pdev->dev, "allocate ep memory failed\n"); retval = -ENOMEM; goto err_destroy_dma; } /* initialize ep0 status request structure */ - udc->status_req = kzalloc(sizeof(struct mv_req), GFP_KERNEL); + udc->status_req = devm_kzalloc(&pdev->dev, sizeof(struct mv_req), + GFP_KERNEL); if (!udc->status_req) { - dev_err(&dev->dev, "allocate status_req memory failed\n"); + dev_err(&pdev->dev, "allocate status_req memory failed\n"); retval = -ENOMEM; - goto err_free_eps; + goto err_destroy_dma; } INIT_LIST_HEAD(&udc->status_req->queue); @@ -2315,17 +2285,17 @@ static int mv_udc_probe(struct platform_device *dev) r = platform_get_resource(udc->dev, IORESOURCE_IRQ, 0); if (r == NULL) { - dev_err(&dev->dev, "no IRQ resource defined\n"); + dev_err(&pdev->dev, "no IRQ resource defined\n"); retval = -ENODEV; - goto err_free_status_req; + goto err_destroy_dma; } udc->irq = r->start; - if (request_irq(udc->irq, mv_udc_irq, + if (devm_request_irq(&pdev->dev, udc->irq, mv_udc_irq, IRQF_SHARED, driver_name, udc)) { - dev_err(&dev->dev, "Request irq %d for UDC failed\n", + dev_err(&pdev->dev, "Request irq %d for UDC failed\n", udc->irq); retval = -ENODEV; - goto err_free_status_req; + goto err_destroy_dma; } /* initialize gadget structure */ @@ -2337,14 +2307,14 @@ static int mv_udc_probe(struct platform_device *dev) /* the "gadget" abstracts/virtualizes the controller */ dev_set_name(&udc->gadget.dev, "gadget"); - udc->gadget.dev.parent = &dev->dev; - udc->gadget.dev.dma_mask = dev->dev.dma_mask; + udc->gadget.dev.parent = &pdev->dev; + udc->gadget.dev.dma_mask = pdev->dev.dma_mask; udc->gadget.dev.release = gadget_release; udc->gadget.name = driver_name; /* gadget name */ retval = device_register(&udc->gadget.dev); if (retval) - goto err_free_irq; + goto err_destroy_dma; eps_init(udc); @@ -2353,10 +2323,11 @@ static int mv_udc_probe(struct platform_device *dev) udc->clock_gating = 1; else if (pdata->vbus) { udc->clock_gating = 1; - retval = request_threaded_irq(pdata->vbus->irq, NULL, + retval = devm_request_threaded_irq(&pdev->dev, + pdata->vbus->irq, NULL, mv_udc_vbus_irq, IRQF_ONESHOT, "vbus", udc); if (retval) { - dev_info(&dev->dev, + dev_info(&pdev->dev, "Can not request irq for VBUS, " "disable clock gating\n"); udc->clock_gating = 0; @@ -2364,7 +2335,7 @@ static int mv_udc_probe(struct platform_device *dev) udc->qwork = create_singlethread_workqueue("mv_udc_queue"); if (!udc->qwork) { - dev_err(&dev->dev, "cannot create workqueue\n"); + dev_err(&pdev->dev, "cannot create workqueue\n"); retval = -ENOMEM; goto err_unregister; } @@ -2382,43 +2353,28 @@ static int mv_udc_probe(struct platform_device *dev) else udc->vbus_active = 1; - retval = usb_add_gadget_udc(&dev->dev, &udc->gadget); + retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget); if (retval) - goto err_unregister; + goto err_create_workqueue; - platform_set_drvdata(dev, udc); - dev_info(&dev->dev, "successful probe UDC device %s clock gating.\n", + platform_set_drvdata(pdev, udc); + dev_info(&pdev->dev, "successful probe UDC device %s clock gating.\n", udc->clock_gating ? "with" : "without"); return 0; +err_create_workqueue: + destroy_workqueue(udc->qwork); err_unregister: - if (udc->pdata && udc->pdata->vbus - && udc->clock_gating && IS_ERR_OR_NULL(udc->transceiver)) - free_irq(pdata->vbus->irq, &dev->dev); device_unregister(&udc->gadget.dev); -err_free_irq: - free_irq(udc->irq, &dev->dev); -err_free_status_req: - kfree(udc->status_req->req.buf); - kfree(udc->status_req); -err_free_eps: - kfree(udc->eps); err_destroy_dma: dma_pool_destroy(udc->dtd_pool); err_free_dma: - dma_free_coherent(&dev->dev, udc->ep_dqh_size, + dma_free_coherent(&pdev->dev, udc->ep_dqh_size, udc->ep_dqh, udc->ep_dqh_dma); err_disable_clock: mv_udc_disable_internal(udc); -err_iounmap_phyreg: - iounmap(udc->phy_regs); -err_iounmap_capreg: - iounmap(udc->cap_regs); -err_put_clk: - for (clk_i--; clk_i >= 0; clk_i--) - clk_put(udc->clk[clk_i]); - kfree(udc); + return retval; } @@ -2489,12 +2445,12 @@ static const struct dev_pm_ops mv_udc_pm_ops = { }; #endif -static void mv_udc_shutdown(struct platform_device *dev) +static void mv_udc_shutdown(struct platform_device *pdev) { struct mv_udc *udc; u32 mode; - udc = platform_get_drvdata(dev); + udc = platform_get_drvdata(pdev); /* reset controller mode to IDLE */ mv_udc_enable(udc); mode = readl(&udc->op_regs->usbmode); -- cgit v1.2.3 From 6a6f05f09772dfe2fa0a5a3ec6b786f4a40e7e54 Mon Sep 17 00:00:00 2001 From: Chao Xie Date: Thu, 24 Jan 2013 01:38:27 -0500 Subject: usb: gadget: mv_udc: fix the warning of mv_udc_remove The __exit_p() will be NULL if MODULE is no defined. It will cause the warning. Removing __exit_p to remove the warning. Signed-off-by: Chao Xie Signed-off-by: Felipe Balbi --- drivers/usb/gadget/mv_udc_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index 687b569669bf..ba6b4fbaad09 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -2461,7 +2461,7 @@ static void mv_udc_shutdown(struct platform_device *pdev) static struct platform_driver udc_driver = { .probe = mv_udc_probe, - .remove = __exit_p(mv_udc_remove), + .remove = mv_udc_remove, .shutdown = mv_udc_shutdown, .driver = { .owner = THIS_MODULE, -- cgit v1.2.3 From fb3dfe13d0cc7e76c9d4a73a72f17f80f63590a7 Mon Sep 17 00:00:00 2001 From: Chao Xie Date: Thu, 24 Jan 2013 01:38:28 -0500 Subject: usb: otg: mv_otg: use devm_xxx for probe use devm_xxx for otg driver probe. So we do need care about the resources release in driver remove or failure handling in driver probe. Signed-off-by: Chao Xie Signed-off-by: Felipe Balbi --- drivers/usb/otg/mv_otg.c | 82 +++++++++++++----------------------------------- 1 file changed, 22 insertions(+), 60 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/otg/mv_otg.c b/drivers/usb/otg/mv_otg.c index 1dd57504186d..fe1b56a31947 100644 --- a/drivers/usb/otg/mv_otg.c +++ b/drivers/usb/otg/mv_otg.c @@ -662,18 +662,9 @@ static struct attribute_group inputs_attr_group = { int mv_otg_remove(struct platform_device *pdev) { struct mv_otg *mvotg = platform_get_drvdata(pdev); - int clk_i; sysfs_remove_group(&mvotg->pdev->dev.kobj, &inputs_attr_group); - if (mvotg->irq) - free_irq(mvotg->irq, mvotg); - - if (mvotg->pdata->vbus) - free_irq(mvotg->pdata->vbus->irq, mvotg); - if (mvotg->pdata->id) - free_irq(mvotg->pdata->id->irq, mvotg); - if (mvotg->qwork) { flush_workqueue(mvotg->qwork); destroy_workqueue(mvotg->qwork); @@ -681,21 +672,9 @@ int mv_otg_remove(struct platform_device *pdev) mv_otg_disable(mvotg); - if (mvotg->cap_regs) - iounmap(mvotg->cap_regs); - - if (mvotg->phy_regs) - iounmap(mvotg->phy_regs); - - for (clk_i = 0; clk_i <= mvotg->clknum; clk_i++) - clk_put(mvotg->clk[clk_i]); - usb_remove_phy(&mvotg->phy); platform_set_drvdata(pdev, NULL); - kfree(mvotg->phy.otg); - kfree(mvotg); - return 0; } @@ -714,17 +693,15 @@ static int mv_otg_probe(struct platform_device *pdev) } size = sizeof(*mvotg) + sizeof(struct clk *) * pdata->clknum; - mvotg = kzalloc(size, GFP_KERNEL); + mvotg = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); if (!mvotg) { dev_err(&pdev->dev, "failed to allocate memory!\n"); return -ENOMEM; } - otg = kzalloc(sizeof *otg, GFP_KERNEL); - if (!otg) { - kfree(mvotg); + otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL); + if (!otg) return -ENOMEM; - } platform_set_drvdata(pdev, mvotg); @@ -733,18 +710,18 @@ static int mv_otg_probe(struct platform_device *pdev) mvotg->clknum = pdata->clknum; for (clk_i = 0; clk_i < mvotg->clknum; clk_i++) { - mvotg->clk[clk_i] = clk_get(&pdev->dev, pdata->clkname[clk_i]); + mvotg->clk[clk_i] = devm_clk_get(&pdev->dev, + pdata->clkname[clk_i]); if (IS_ERR(mvotg->clk[clk_i])) { retval = PTR_ERR(mvotg->clk[clk_i]); - goto err_put_clk; + return retval; } } mvotg->qwork = create_singlethread_workqueue("mv_otg_queue"); if (!mvotg->qwork) { dev_dbg(&pdev->dev, "cannot create workqueue for OTG\n"); - retval = -ENOMEM; - goto err_put_clk; + return -ENOMEM; } INIT_DELAYED_WORK(&mvotg->work, mv_otg_work); @@ -772,7 +749,7 @@ static int mv_otg_probe(struct platform_device *pdev) goto err_destroy_workqueue; } - mvotg->phy_regs = ioremap(r->start, resource_size(r)); + mvotg->phy_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r)); if (mvotg->phy_regs == NULL) { dev_err(&pdev->dev, "failed to map phy I/O memory\n"); retval = -EFAULT; @@ -784,21 +761,21 @@ static int mv_otg_probe(struct platform_device *pdev) if (r == NULL) { dev_err(&pdev->dev, "no I/O memory resource defined\n"); retval = -ENODEV; - goto err_unmap_phyreg; + goto err_destroy_workqueue; } - mvotg->cap_regs = ioremap(r->start, resource_size(r)); + mvotg->cap_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r)); if (mvotg->cap_regs == NULL) { dev_err(&pdev->dev, "failed to map I/O memory\n"); retval = -EFAULT; - goto err_unmap_phyreg; + goto err_destroy_workqueue; } /* we will acces controller register, so enable the udc controller */ retval = mv_otg_enable_internal(mvotg); if (retval) { dev_err(&pdev->dev, "mv otg enable error %d\n", retval); - goto err_unmap_capreg; + goto err_destroy_workqueue; } mvotg->op_regs = @@ -806,9 +783,9 @@ static int mv_otg_probe(struct platform_device *pdev) + (readl(mvotg->cap_regs) & CAPLENGTH_MASK)); if (pdata->id) { - retval = request_threaded_irq(pdata->id->irq, NULL, - mv_otg_inputs_irq, - IRQF_ONESHOT, "id", mvotg); + retval = devm_request_threaded_irq(&pdev->dev, pdata->id->irq, + NULL, mv_otg_inputs_irq, + IRQF_ONESHOT, "id", mvotg); if (retval) { dev_info(&pdev->dev, "Failed to request irq for ID\n"); @@ -818,9 +795,9 @@ static int mv_otg_probe(struct platform_device *pdev) if (pdata->vbus) { mvotg->clock_gating = 1; - retval = request_threaded_irq(pdata->vbus->irq, NULL, - mv_otg_inputs_irq, - IRQF_ONESHOT, "vbus", mvotg); + retval = devm_request_threaded_irq(&pdev->dev, pdata->vbus->irq, + NULL, mv_otg_inputs_irq, + IRQF_ONESHOT, "vbus", mvotg); if (retval) { dev_info(&pdev->dev, "Failed to request irq for VBUS, " @@ -844,7 +821,7 @@ static int mv_otg_probe(struct platform_device *pdev) } mvotg->irq = r->start; - if (request_irq(mvotg->irq, mv_otg_irq, IRQF_SHARED, + if (devm_request_irq(&pdev->dev, mvotg->irq, mv_otg_irq, IRQF_SHARED, driver_name, mvotg)) { dev_err(&pdev->dev, "Request irq %d for OTG failed\n", mvotg->irq); @@ -857,14 +834,14 @@ static int mv_otg_probe(struct platform_device *pdev) if (retval < 0) { dev_err(&pdev->dev, "can't register transceiver, %d\n", retval); - goto err_free_irq; + goto err_disable_clk; } retval = sysfs_create_group(&pdev->dev.kobj, &inputs_attr_group); if (retval < 0) { dev_dbg(&pdev->dev, "Can't register sysfs attr group: %d\n", retval); - goto err_set_transceiver; + goto err_remove_phy; } spin_lock_init(&mvotg->wq_lock); @@ -879,30 +856,15 @@ static int mv_otg_probe(struct platform_device *pdev) return 0; -err_set_transceiver: +err_remove_phy: usb_remove_phy(&mvotg->phy); -err_free_irq: - free_irq(mvotg->irq, mvotg); err_disable_clk: - if (pdata->vbus) - free_irq(pdata->vbus->irq, mvotg); - if (pdata->id) - free_irq(pdata->id->irq, mvotg); mv_otg_disable_internal(mvotg); -err_unmap_capreg: - iounmap(mvotg->cap_regs); -err_unmap_phyreg: - iounmap(mvotg->phy_regs); err_destroy_workqueue: flush_workqueue(mvotg->qwork); destroy_workqueue(mvotg->qwork); -err_put_clk: - for (clk_i--; clk_i >= 0; clk_i--) - clk_put(mvotg->clk[clk_i]); platform_set_drvdata(pdev, NULL); - kfree(otg); - kfree(mvotg); return retval; } -- cgit v1.2.3 From ab592a74a5519d9de2af3003a721cfe0c6684b8a Mon Sep 17 00:00:00 2001 From: Chao Xie Date: Thu, 24 Jan 2013 01:38:29 -0500 Subject: usb: host: ehci-mv: remove unused variable Signed-off-by: Chao Xie Acked-by: Alan Stern Signed-off-by: Felipe Balbi --- drivers/usb/host/ehci-mv.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c index f7bfc0b898b9..0da3f081aa78 100644 --- a/drivers/usb/host/ehci-mv.c +++ b/drivers/usb/host/ehci-mv.c @@ -302,7 +302,6 @@ static int mv_ehci_remove(struct platform_device *pdev) { struct ehci_hcd_mv *ehci_mv = platform_get_drvdata(pdev); struct usb_hcd *hcd = ehci_mv->hcd; - int clk_i; if (hcd->rh_registered) usb_remove_hcd(hcd); -- cgit v1.2.3 From 449d04a977f63e6218d88312f9bd3cb53fb5d30b Mon Sep 17 00:00:00 2001 From: Chao Xie Date: Thu, 24 Jan 2013 01:38:30 -0500 Subject: usb: gadget: mv_udc: fix the value of tranceiver usally we will use udc->tranceiver == NULL or udc->tranceiver != NULL. So when failed to get the udc->tranceiver by usb_get_phy(), we directly set udc->tranceiver to be NULL. Then the source code will not need macro IS_ERR_OR_NULL() for udc->tranceiver judgement. It can reduce the line size and make the judgement simple. Signed-off-by: Chao Xie Signed-off-by: Felipe Balbi --- drivers/usb/gadget/mv_udc_core.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index ba6b4fbaad09..67d72f97a09b 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -1394,7 +1394,7 @@ static int mv_udc_start(struct usb_gadget *gadget, spin_unlock_irqrestore(&udc->lock, flags); - if (!IS_ERR_OR_NULL(udc->transceiver)) { + if (udc->transceiver) { retval = otg_set_peripheral(udc->transceiver->otg, &udc->gadget); if (retval) { @@ -2174,9 +2174,14 @@ static int mv_udc_probe(struct platform_device *pdev) udc->dev = pdev; #ifdef CONFIG_USB_OTG_UTILS - if (pdata->mode == MV_USB_MODE_OTG) + if (pdata->mode == MV_USB_MODE_OTG) { udc->transceiver = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(udc->transceiver)) { + udc->transceiver = NULL; + return -ENODEV; + } + } #endif udc->clknum = pdata->clknum; @@ -2319,7 +2324,7 @@ static int mv_udc_probe(struct platform_device *pdev) eps_init(udc); /* VBUS detect: we can disable/enable clock on demand.*/ - if (!IS_ERR_OR_NULL(udc->transceiver)) + if (udc->transceiver) udc->clock_gating = 1; else if (pdata->vbus) { udc->clock_gating = 1; @@ -2386,7 +2391,7 @@ static int mv_udc_suspend(struct device *dev) udc = dev_get_drvdata(dev); /* if OTG is enabled, the following will be done in OTG driver*/ - if (!IS_ERR_OR_NULL(udc->transceiver)) + if (udc->transceiver) return 0; if (udc->pdata->vbus && udc->pdata->vbus->poll) @@ -2421,7 +2426,7 @@ static int mv_udc_resume(struct device *dev) udc = dev_get_drvdata(dev); /* if OTG is enabled, the following will be done in OTG driver*/ - if (!IS_ERR_OR_NULL(udc->transceiver)) + if (udc->transceiver) return 0; if (!udc->clock_gating) { -- cgit v1.2.3 From eeef45876631a446eaedce16675f4ff344e16cf0 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 17:58:16 +0200 Subject: usb: gadget: constify all struct usb_gadget_ops Add the missing 'const' keyword to all struct usb_gadget_ops in the gadget framework. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/fsl_qe_udc.c | 2 +- drivers/usb/gadget/fsl_udc_core.c | 2 +- drivers/usb/gadget/fusb300_udc.c | 2 +- drivers/usb/gadget/m66592-udc.c | 2 +- drivers/usb/gadget/omap_udc.c | 2 +- drivers/usb/gadget/r8a66597-udc.c | 2 +- drivers/usb/gadget/s3c-hsotg.c | 2 +- drivers/usb/gadget/s3c-hsudc.c | 2 +- drivers/usb/renesas_usbhs/mod_gadget.c | 2 +- 9 files changed, 9 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c index ec50f18c8890..034477ce77c6 100644 --- a/drivers/usb/gadget/fsl_qe_udc.c +++ b/drivers/usb/gadget/fsl_qe_udc.c @@ -1894,7 +1894,7 @@ static int fsl_qe_stop(struct usb_gadget *gadget, struct usb_gadget_driver *driver); /* defined in usb_gadget.h */ -static struct usb_gadget_ops qe_gadget_ops = { +static const struct usb_gadget_ops qe_gadget_ops = { .get_frame = qe_get_frame, .udc_start = fsl_qe_start, .udc_stop = fsl_qe_stop, diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index 49642d4ae83c..38939561cff3 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -1259,7 +1259,7 @@ static int fsl_udc_start(struct usb_gadget *g, static int fsl_udc_stop(struct usb_gadget *g, struct usb_gadget_driver *driver); /* defined in gadget.h */ -static struct usb_gadget_ops fsl_gadget_ops = { +static const struct usb_gadget_ops fsl_gadget_ops = { .get_frame = fsl_get_frame, .wakeup = fsl_wakeup, /* .set_selfpowered = fsl_set_selfpowered, */ /* Always selfpowered */ diff --git a/drivers/usb/gadget/fusb300_udc.c b/drivers/usb/gadget/fusb300_udc.c index 8c2372fa294f..9fafb00d3c7a 100644 --- a/drivers/usb/gadget/fusb300_udc.c +++ b/drivers/usb/gadget/fusb300_udc.c @@ -1341,7 +1341,7 @@ static int fusb300_udc_pullup(struct usb_gadget *_gadget, int is_active) return 0; } -static struct usb_gadget_ops fusb300_gadget_ops = { +static const struct usb_gadget_ops fusb300_gadget_ops = { .pullup = fusb300_udc_pullup, .udc_start = fusb300_udc_start, .udc_stop = fusb300_udc_stop, diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c index 0a35db1ae029..34a0cb9382dc 100644 --- a/drivers/usb/gadget/m66592-udc.c +++ b/drivers/usb/gadget/m66592-udc.c @@ -1526,7 +1526,7 @@ static int m66592_pullup(struct usb_gadget *gadget, int is_on) return 0; } -static struct usb_gadget_ops m66592_gadget_ops = { +static const struct usb_gadget_ops m66592_gadget_ops = { .get_frame = m66592_get_frame, .udc_start = m66592_udc_start, .udc_stop = m66592_udc_stop, diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c index d0c87b15b9a3..06be85c2b233 100644 --- a/drivers/usb/gadget/omap_udc.c +++ b/drivers/usb/gadget/omap_udc.c @@ -1314,7 +1314,7 @@ static int omap_udc_start(struct usb_gadget *g, static int omap_udc_stop(struct usb_gadget *g, struct usb_gadget_driver *driver); -static struct usb_gadget_ops omap_gadget_ops = { +static const struct usb_gadget_ops omap_gadget_ops = { .get_frame = omap_get_frame, .wakeup = omap_wakeup, .set_selfpowered = omap_set_selfpowered, diff --git a/drivers/usb/gadget/r8a66597-udc.c b/drivers/usb/gadget/r8a66597-udc.c index 5a80751accb7..234838da6d51 100644 --- a/drivers/usb/gadget/r8a66597-udc.c +++ b/drivers/usb/gadget/r8a66597-udc.c @@ -1812,7 +1812,7 @@ static int r8a66597_set_selfpowered(struct usb_gadget *gadget, int is_self) return 0; } -static struct usb_gadget_ops r8a66597_gadget_ops = { +static const struct usb_gadget_ops r8a66597_gadget_ops = { .get_frame = r8a66597_get_frame, .udc_start = r8a66597_start, .udc_stop = r8a66597_stop, diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index 833d85befa3f..26033b50b54a 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -3055,7 +3055,7 @@ static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on) return 0; } -static struct usb_gadget_ops s3c_hsotg_gadget_ops = { +static const struct usb_gadget_ops s3c_hsotg_gadget_ops = { .get_frame = s3c_hsotg_gadget_getframe, .udc_start = s3c_hsotg_udc_start, .udc_stop = s3c_hsotg_udc_stop, diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c index 4a3d620e1f11..3ed5a397296f 100644 --- a/drivers/usb/gadget/s3c-hsudc.c +++ b/drivers/usb/gadget/s3c-hsudc.c @@ -1254,7 +1254,7 @@ static int s3c_hsudc_vbus_draw(struct usb_gadget *gadget, unsigned mA) return -EOPNOTSUPP; } -static struct usb_gadget_ops s3c_hsudc_gadget_ops = { +static const struct usb_gadget_ops s3c_hsudc_gadget_ops = { .get_frame = s3c_hsudc_gadget_getframe, .udc_start = s3c_hsudc_start, .udc_stop = s3c_hsudc_stop, diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index dd41f61893ef..809745072c11 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -905,7 +905,7 @@ static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self) return 0; } -static struct usb_gadget_ops usbhsg_gadget_ops = { +static const struct usb_gadget_ops usbhsg_gadget_ops = { .get_frame = usbhsg_get_frame, .set_selfpowered = usbhsg_set_selfpowered, .udc_start = usbhsg_gadget_start, -- cgit v1.2.3 From 13996ca7afd5b5d7980ea013b00e3ef7cf2cefd0 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Wed, 23 Jan 2013 16:13:41 +0800 Subject: USB: uhci: check buffer length to avoid memory overflow for function uhci_sprint_schedule: the buffer len is MAX_OUTPUT: 64 * 1024, which may not be enough: may loop UHCI_NUMFRAMES times (UHCI_NUMFRAMES is 1024) each time of loop may get more than 64 bytes so need check the buffer length to avoid memory overflow this patch fix it like this: at first, make enough room for buffering the exceeding contents judge the contents which written whether bigger than buffer length if bigger (the exceeding contents will be in the exceeding buffer) break current work flow, and return. Signed-off-by: Chen Gang Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/uhci-debug.c | 150 +++++++++++++++++++++++++++++------------- drivers/usb/host/uhci-hcd.c | 4 +- drivers/usb/host/uhci-q.c | 2 +- 3 files changed, 107 insertions(+), 49 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/uhci-debug.c b/drivers/usb/host/uhci-debug.c index fc0b0daac93d..8a55bb25315b 100644 --- a/drivers/usb/host/uhci-debug.c +++ b/drivers/usb/host/uhci-debug.c @@ -16,6 +16,8 @@ #include "uhci-hcd.h" +#define EXTRA_SPACE 1024 + static struct dentry *uhci_debugfs_root; #ifdef DEBUG @@ -44,10 +46,6 @@ static int uhci_show_td(struct uhci_hcd *uhci, struct uhci_td *td, char *buf, char *spid; u32 status, token; - /* Try to make sure there's enough memory */ - if (len < 160) - return 0; - status = td_status(uhci, td); out += sprintf(out, "%*s[%p] link (%08x) ", space, "", td, hc32_to_cpu(uhci, td->link)); @@ -64,6 +62,8 @@ static int uhci_show_td(struct uhci_hcd *uhci, struct uhci_td *td, char *buf, (status & TD_CTRL_CRCTIMEO) ? "CRC/Timeo " : "", (status & TD_CTRL_BITSTUFF) ? "BitStuff " : "", status & 0x7ff); + if (out - buf > len) + goto done; token = td_token(uhci, td); switch (uhci_packetid(token)) { @@ -90,6 +90,9 @@ static int uhci_show_td(struct uhci_hcd *uhci, struct uhci_td *td, char *buf, spid); out += sprintf(out, "(buf=%08x)\n", hc32_to_cpu(uhci, td->buffer)); +done: + if (out - buf > len) + out += sprintf(out, " ...\n"); return out - buf; } @@ -101,8 +104,6 @@ static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, int i, nactive, ninactive; char *ptype; - if (len < 200) - return 0; out += sprintf(out, "urb_priv [%p] ", urbp); out += sprintf(out, "urb [%p] ", urbp->urb); @@ -110,6 +111,8 @@ static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, out += sprintf(out, "Dev=%d ", usb_pipedevice(urbp->urb->pipe)); out += sprintf(out, "EP=%x(%s) ", usb_pipeendpoint(urbp->urb->pipe), (usb_pipein(urbp->urb->pipe) ? "IN" : "OUT")); + if (out - buf > len) + goto done; switch (usb_pipetype(urbp->urb->pipe)) { case PIPE_ISOCHRONOUS: ptype = "ISO"; break; @@ -128,6 +131,9 @@ static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, out += sprintf(out, " Unlinked=%d", urbp->urb->unlinked); out += sprintf(out, "\n"); + if (out - buf > len) + goto done; + i = nactive = ninactive = 0; list_for_each_entry(td, &urbp->td_list, list) { if (urbp->qh->type != USB_ENDPOINT_XFER_ISOC && @@ -135,6 +141,8 @@ static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, out += sprintf(out, "%*s%d: ", space + 2, "", i); out += uhci_show_td(uhci, td, out, len - (out - buf), 0); + if (out - buf > len) + goto tail; } else { if (td_status(uhci, td) & TD_CTRL_ACTIVE) ++nactive; @@ -146,7 +154,10 @@ static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, out += sprintf(out, "%*s[skipped %d inactive and %d active " "TDs]\n", space, "", ninactive, nactive); - +done: + if (out - buf > len) + out += sprintf(out, " ...\n"); +tail: return out - buf; } @@ -158,10 +169,6 @@ static int uhci_show_qh(struct uhci_hcd *uhci, __hc32 element = qh_element(qh); char *qtype; - /* Try to make sure there's enough memory */ - if (len < 80 * 7) - return 0; - switch (qh->type) { case USB_ENDPOINT_XFER_ISOC: qtype = "ISO"; break; case USB_ENDPOINT_XFER_INT: qtype = "INT"; break; @@ -182,6 +189,8 @@ static int uhci_show_qh(struct uhci_hcd *uhci, else if (qh->type == USB_ENDPOINT_XFER_INT) out += sprintf(out, "%*s period %d phase %d load %d us\n", space, "", qh->period, qh->phase, qh->load); + if (out - buf > len) + goto done; if (element & UHCI_PTR_QH(uhci)) out += sprintf(out, "%*s Element points to QH (bug?)\n", space, ""); @@ -195,11 +204,17 @@ static int uhci_show_qh(struct uhci_hcd *uhci, if (!(element & ~(UHCI_PTR_QH(uhci) | UHCI_PTR_DEPTH(uhci)))) out += sprintf(out, "%*s Element is NULL (bug?)\n", space, ""); + if (out - buf > len) + goto done; + if (list_empty(&qh->queue)) { out += sprintf(out, "%*s queue is empty\n", space, ""); - if (qh == uhci->skel_async_qh) + if (qh == uhci->skel_async_qh) { out += uhci_show_td(uhci, uhci->term_td, out, len - (out - buf), 0); + if (out - buf > len) + goto tail; + } } else { struct urb_priv *urbp = list_entry(qh->queue.next, struct urb_priv, node); @@ -211,9 +226,12 @@ static int uhci_show_qh(struct uhci_hcd *uhci, space, ""); i = nurbs = 0; list_for_each_entry(urbp, &qh->queue, node) { - if (++i <= 10) + if (++i <= 10) { out += uhci_show_urbp(uhci, urbp, out, len - (out - buf), space + 2); + if (out - buf > len) + goto tail; + } else ++nurbs; } @@ -222,24 +240,27 @@ static int uhci_show_qh(struct uhci_hcd *uhci, space, "", nurbs); } + if (out - buf > len) + goto done; + if (qh->dummy_td) { out += sprintf(out, "%*s Dummy TD\n", space, ""); out += uhci_show_td(uhci, qh->dummy_td, out, len - (out - buf), 0); + if (out - buf > len) + goto tail; } +done: + if (out - buf > len) + out += sprintf(out, " ...\n"); +tail: return out - buf; } -static int uhci_show_sc(int port, unsigned short status, char *buf, int len) +static int uhci_show_sc(int port, unsigned short status, char *buf) { - char *out = buf; - - /* Try to make sure there's enough memory */ - if (len < 160) - return 0; - - out += sprintf(out, " stat%d = %04x %s%s%s%s%s%s%s%s%s%s\n", + return sprintf(buf, " stat%d = %04x %s%s%s%s%s%s%s%s%s%s\n", port, status, (status & USBPORTSC_SUSP) ? " Suspend" : "", @@ -252,19 +273,12 @@ static int uhci_show_sc(int port, unsigned short status, char *buf, int len) (status & USBPORTSC_PE) ? " Enabled" : "", (status & USBPORTSC_CSC) ? " ConnectChange" : "", (status & USBPORTSC_CCS) ? " Connected" : ""); - - return out - buf; } -static int uhci_show_root_hub_state(struct uhci_hcd *uhci, char *buf, int len) +static int uhci_show_root_hub_state(struct uhci_hcd *uhci, char *buf) { - char *out = buf; char *rh_state; - /* Try to make sure there's enough memory */ - if (len < 60) - return 0; - switch (uhci->rh_state) { case UHCI_RH_RESET: rh_state = "reset"; break; @@ -283,9 +297,8 @@ static int uhci_show_root_hub_state(struct uhci_hcd *uhci, char *buf, int len) default: rh_state = "?"; break; } - out += sprintf(out, "Root-hub state: %s FSBR: %d\n", + return sprintf(buf, "Root-hub state: %s FSBR: %d\n", rh_state, uhci->fsbr_is_on); - return out - buf; } static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len) @@ -296,9 +309,6 @@ static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len) unsigned char sof; unsigned short portsc1, portsc2; - /* Try to make sure there's enough memory */ - if (len < 80 * 9) - return 0; usbcmd = uhci_readw(uhci, 0); usbstat = uhci_readw(uhci, 2); @@ -319,6 +329,8 @@ static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len) (usbcmd & USBCMD_GRESET) ? "GRESET " : "", (usbcmd & USBCMD_HCRESET) ? "HCRESET " : "", (usbcmd & USBCMD_RS) ? "RS " : ""); + if (out - buf > len) + goto done; out += sprintf(out, " usbstat = %04x %s%s%s%s%s%s\n", usbstat, @@ -328,19 +340,33 @@ static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len) (usbstat & USBSTS_RD) ? "ResumeDetect " : "", (usbstat & USBSTS_ERROR) ? "USBError " : "", (usbstat & USBSTS_USBINT) ? "USBINT " : ""); + if (out - buf > len) + goto done; out += sprintf(out, " usbint = %04x\n", usbint); out += sprintf(out, " usbfrnum = (%d)%03x\n", (usbfrnum >> 10) & 1, 0xfff & (4*(unsigned int)usbfrnum)); out += sprintf(out, " flbaseadd = %08x\n", flbaseadd); out += sprintf(out, " sof = %02x\n", sof); - out += uhci_show_sc(1, portsc1, out, len - (out - buf)); - out += uhci_show_sc(2, portsc2, out, len - (out - buf)); - out += sprintf(out, "Most recent frame: %x (%d) " - "Last ISO frame: %x (%d)\n", + if (out - buf > len) + goto done; + + out += uhci_show_sc(1, portsc1, out); + if (out - buf > len) + goto done; + + out += uhci_show_sc(2, portsc2, out); + if (out - buf > len) + goto done; + + out += sprintf(out, + "Most recent frame: %x (%d) Last ISO frame: %x (%d)\n", uhci->frame_number, uhci->frame_number & 1023, uhci->last_iso_frame, uhci->last_iso_frame & 1023); +done: + if (out - buf > len) + out += sprintf(out, " ...\n"); return out - buf; } @@ -360,9 +386,13 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len) "int8", "int4", "int2", "async", "term" }; - out += uhci_show_root_hub_state(uhci, out, len - (out - buf)); + out += uhci_show_root_hub_state(uhci, out); + if (out - buf > len) + goto done; out += sprintf(out, "HC status\n"); out += uhci_show_status(uhci, out, len - (out - buf)); + if (out - buf > len) + goto tail; out += sprintf(out, "Periodic load table\n"); for (i = 0; i < MAX_PHASE; ++i) { @@ -375,7 +405,7 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len) uhci_to_hcd(uhci)->self.bandwidth_int_reqs, uhci_to_hcd(uhci)->self.bandwidth_isoc_reqs); if (debug <= 1) - return out - buf; + goto tail; out += sprintf(out, "Frame List\n"); nframes = 10; @@ -383,6 +413,8 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len) for (i = 0; i < UHCI_NUMFRAMES; ++i) { __hc32 qh_dma; + if (out - buf > len) + goto done; j = 0; td = uhci->frame_cpu[i]; link = uhci->frame[i]; @@ -401,15 +433,20 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len) td = list_entry(tmp, struct uhci_td, fl_list); tmp = tmp->next; if (link != LINK_TO_TD(uhci, td)) { - if (nframes > 0) + if (nframes > 0) { out += sprintf(out, " link does " "not match list entry!\n"); - else + if (out - buf > len) + goto done; + } else ++nerrs; } - if (nframes > 0) + if (nframes > 0) { out += uhci_show_td(uhci, td, out, len - (out - buf), 4); + if (out - buf > len) + goto tail; + } link = td->link; } while (tmp != head); @@ -426,6 +463,8 @@ check_link: out += sprintf(out, " link does not match " "QH (%08x)!\n", hc32_to_cpu(uhci, qh_dma)); + if (out - buf > len) + goto done; } else ++nerrs; } @@ -436,6 +475,9 @@ check_link: out += sprintf(out, "Skeleton QHs\n"); + if (out - buf > len) + goto done; + fsbr_link = 0; for (i = 0; i < UHCI_NUM_SKELQH; ++i) { int cnt = 0; @@ -443,11 +485,16 @@ check_link: qh = uhci->skelqh[i]; out += sprintf(out, "- skel_%s_qh\n", qh_names[i]); \ out += uhci_show_qh(uhci, qh, out, len - (out - buf), 4); + if (out - buf > len) + goto tail; /* Last QH is the Terminating QH, it's different */ if (i == SKEL_TERM) { - if (qh_element(qh) != LINK_TO_TD(uhci, uhci->term_td)) + if (qh_element(qh) != LINK_TO_TD(uhci, uhci->term_td)) { out += sprintf(out, " skel_term_qh element is not set to term_td!\n"); + if (out - buf > len) + goto done; + } link = fsbr_link; if (!link) link = LINK_TO_QH(uhci, uhci->skel_term_qh); @@ -460,9 +507,12 @@ check_link: while (tmp != head) { qh = list_entry(tmp, struct uhci_qh, node); tmp = tmp->next; - if (++cnt <= 10) + if (++cnt <= 10) { out += uhci_show_qh(uhci, qh, out, len - (out - buf), 4); + if (out - buf > len) + goto tail; + } if (!fsbr_link && qh->skel >= SKEL_FSBR) fsbr_link = LINK_TO_QH(uhci, qh); } @@ -481,8 +531,15 @@ check_link: check_qh_link: if (qh->link != link) out += sprintf(out, " last QH not linked to next skeleton!\n"); + + if (out - buf > len) + goto done; } +done: + if (out - buf > len) + out += sprintf(out, " ...\n"); +tail: return out - buf; } @@ -514,7 +571,8 @@ static int uhci_debug_open(struct inode *inode, struct file *file) up->size = 0; spin_lock_irqsave(&uhci->lock, flags); if (uhci->is_initialized) - up->size = uhci_sprint_schedule(uhci, up->data, MAX_OUTPUT); + up->size = uhci_sprint_schedule(uhci, up->data, + MAX_OUTPUT - EXTRA_SPACE); spin_unlock_irqrestore(&uhci->lock, flags); file->private_data = up; diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index 4b9e9aba2665..7c12b260531b 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -462,8 +462,8 @@ static irqreturn_t uhci_irq(struct usb_hcd *hcd) "very bad!\n"); if (debug > 1 && errbuf) { /* Print the schedule for debugging */ - uhci_sprint_schedule(uhci, - errbuf, ERRBUF_LEN); + uhci_sprint_schedule(uhci, errbuf, + ERRBUF_LEN - EXTRA_SPACE); lprintk(errbuf); } uhci_hc_died(uhci); diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c index 15921fd55048..f0976d8190bc 100644 --- a/drivers/usb/host/uhci-q.c +++ b/drivers/usb/host/uhci-q.c @@ -1200,7 +1200,7 @@ static int uhci_result_common(struct uhci_hcd *uhci, struct urb *urb) if (debug > 1 && errbuf) { /* Print the chain for debugging */ uhci_show_qh(uhci, urbp->qh, errbuf, - ERRBUF_LEN, 0); + ERRBUF_LEN - EXTRA_SPACE, 0); lprintk(errbuf); } } -- cgit v1.2.3 From 9bc5d12620cb88aa7df4700980f8106d0e66a9dc Mon Sep 17 00:00:00 2001 From: Woody Suwalski Date: Wed, 23 Jan 2013 13:51:28 -0500 Subject: USB: UHCI: remove unused definition Remove an unused (and erroneous) definition from the UHCI driver. Signed-off: Woody Suwalski Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/uhci-hcd.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h index 7af2b7052047..6f986d82472d 100644 --- a/drivers/usb/host/uhci-hcd.h +++ b/drivers/usb/host/uhci-hcd.h @@ -212,10 +212,6 @@ struct uhci_qh { #define TD_CTRL_BITSTUFF (1 << 17) /* Bit Stuff Error */ #define TD_CTRL_ACTLEN_MASK 0x7FF /* actual length, encoded as n - 1 */ -#define TD_CTRL_ANY_ERROR (TD_CTRL_STALLED | TD_CTRL_DBUFERR | \ - TD_CTRL_BABBLE | TD_CTRL_CRCTIME | \ - TD_CTRL_BITSTUFF) - #define uhci_maxerr(err) ((err) << TD_CTRL_C_ERR_SHIFT) #define uhci_status_bits(ctrl_sts) ((ctrl_sts) & 0xF60000) #define uhci_actual_length(ctrl_sts) (((ctrl_sts) + 1) & \ -- cgit v1.2.3 From eab8050c0168ab6595e9ac6bc72a14d27390ea7a Mon Sep 17 00:00:00 2001 From: Dongjin Kim Date: Thu, 24 Jan 2013 02:47:10 +0900 Subject: USB: misc: usb3503: add dt support Added device tree support for usb3503 driver and add new document with device tree binding information. Signed-off-by: Dongjin Kim Signed-off-by: Greg Kroah-Hartman --- Documentation/devicetree/bindings/usb/usb3503.txt | 20 +++++++++++++++ drivers/usb/misc/usb3503.c | 31 +++++++++++++++++++---- 2 files changed, 46 insertions(+), 5 deletions(-) create mode 100644 Documentation/devicetree/bindings/usb/usb3503.txt (limited to 'drivers') diff --git a/Documentation/devicetree/bindings/usb/usb3503.txt b/Documentation/devicetree/bindings/usb/usb3503.txt new file mode 100644 index 000000000000..6813a715fc7d --- /dev/null +++ b/Documentation/devicetree/bindings/usb/usb3503.txt @@ -0,0 +1,20 @@ +SMSC USB3503 High-Speed Hub Controller + +Required properties: +- compatible: Should be "smsc,usb3503". +- reg: Specifies the i2c slave address, it should be 0x08. +- connect-gpios: Should specify GPIO for connect. +- intn-gpios: Should specify GPIO for interrupt. +- reset-gpios: Should specify GPIO for reset. +- initial-mode: Should specify initial mode. + (1 for HUB mode, 2 for STANDBY mode) + +Examples: + usb3503@08 { + compatible = "smsc,usb3503"; + reg = <0x08>; + connect-gpios = <&gpx3 0 1>; + intn-gpios = <&gpx3 4 1>; + reset-gpios = <&gpx3 5 1>; + initial-mode = <1>; + }; diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index dc2c993ea189..471218aea7b3 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include @@ -181,8 +182,10 @@ err_hubmode: static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct usb3503_platform_data *pdata = i2c->dev.platform_data; + struct device_node *np = i2c->dev.of_node; struct usb3503 *hub; int err = -ENOMEM; + u32 mode; hub = kzalloc(sizeof(struct usb3503), GFP_KERNEL); if (!hub) { @@ -193,14 +196,23 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) i2c_set_clientdata(i2c, hub); hub->client = i2c; - if (!pdata) { - dev_dbg(&i2c->dev, "missing platform data\n"); - goto err_out; - } else { + if (pdata) { hub->gpio_intn = pdata->gpio_intn; hub->gpio_connect = pdata->gpio_connect; hub->gpio_reset = pdata->gpio_reset; hub->mode = pdata->initial_mode; + } else if (np) { + hub->gpio_intn = of_get_named_gpio(np, "connect-gpios", 0); + if (hub->gpio_intn == -EPROBE_DEFER) + return -EPROBE_DEFER; + hub->gpio_connect = of_get_named_gpio(np, "intn-gpios", 0); + if (hub->gpio_connect == -EPROBE_DEFER) + return -EPROBE_DEFER; + hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0); + if (hub->gpio_reset == -EPROBE_DEFER) + return -EPROBE_DEFER; + of_property_read_u32(np, "initial-mode", &mode); + hub->mode = mode; } if (gpio_is_valid(hub->gpio_intn)) { @@ -236,7 +248,7 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) } } - usb3503_switch_mode(hub, pdata->initial_mode); + usb3503_switch_mode(hub, hub->mode); dev_info(&i2c->dev, "%s: probed on %s mode\n", __func__, (hub->mode == USB3503_MODE_HUB) ? "hub" : "standby"); @@ -277,9 +289,18 @@ static const struct i2c_device_id usb3503_id[] = { }; MODULE_DEVICE_TABLE(i2c, usb3503_id); +#ifdef CONFIG_OF +static const struct of_device_id usb3503_of_match[] = { + { .compatible = "smsc,usb3503", }, + {}, +}; +MODULE_DEVICE_TABLE(of, usb3503_of_match); +#endif + static struct i2c_driver usb3503_driver = { .driver = { .name = USB3503_I2C_NAME, + .of_match_table = of_match_ptr(usb3503_of_match), }, .probe = usb3503_probe, .remove = usb3503_remove, -- cgit v1.2.3 From f8f0302bbcbd1b14655bef29f6996a2152be559d Mon Sep 17 00:00:00 2001 From: Bjørn Mork Date: Wed, 23 Jan 2013 10:44:36 +0100 Subject: USB: option: add and update Alcatel modems MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Adding three currently unsupported modems based on information from .inf driver files: Diag VID_1BBB&PID_0052&MI_00 AGPS VID_1BBB&PID_0052&MI_01 VOICE VID_1BBB&PID_0052&MI_02 AT VID_1BBB&PID_0052&MI_03 Modem VID_1BBB&PID_0052&MI_05 wwan VID_1BBB&PID_0052&MI_06 Diag VID_1BBB&PID_00B6&MI_00 AT VID_1BBB&PID_00B6&MI_01 Modem VID_1BBB&PID_00B6&MI_02 wwan VID_1BBB&PID_00B6&MI_03 Diag VID_1BBB&PID_00B7&MI_00 AGPS VID_1BBB&PID_00B7&MI_01 VOICE VID_1BBB&PID_00B7&MI_02 AT VID_1BBB&PID_00B7&MI_03 Modem VID_1BBB&PID_00B7&MI_04 wwan VID_1BBB&PID_00B7&MI_05 Updating the blacklist info for the X060S_X200 and X220_X500D, reserving interfaces for a wwan driver, based on wwan VID_1BBB&PID_0000&MI_04 wwan VID_1BBB&PID_0017&MI_06 Cc: stable Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 478adcfcdf26..4d21789e1ba4 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -470,6 +470,7 @@ static const struct option_blacklist_info four_g_w14_blacklist = { static const struct option_blacklist_info alcatel_x200_blacklist = { .sendsetup = BIT(0) | BIT(1), + .reserved = BIT(4), }; static const struct option_blacklist_info zte_0037_blacklist = { @@ -1198,7 +1199,14 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_X060S_X200), .driver_info = (kernel_ulong_t)&alcatel_x200_blacklist }, - { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_X220_X500D) }, + { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_X220_X500D), + .driver_info = (kernel_ulong_t)&net_intf6_blacklist }, + { USB_DEVICE(ALCATEL_VENDOR_ID, 0x0052), + .driver_info = (kernel_ulong_t)&net_intf6_blacklist }, + { USB_DEVICE(ALCATEL_VENDOR_ID, 0x00b6), + .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + { USB_DEVICE(ALCATEL_VENDOR_ID, 0x00b7), + .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_L100V), .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, { USB_DEVICE(AIRPLUS_VENDOR_ID, AIRPLUS_PRODUCT_MCD650) }, -- cgit v1.2.3 From 3171fcabb16993d6501fab7723371f0f3d0c6840 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Thu, 24 Jan 2013 09:41:45 +0800 Subject: USB: uhci: beautify source code get rid of the line breaks in string constants. let comments within 80 with limitation. delete ' \' at the end of a statement. Signed-off-by: Chen Gang Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/uhci-debug.c | 28 ++++++++++++++++------------ drivers/usb/host/uhci-hcd.c | 27 +++++++++++++-------------- drivers/usb/host/uhci-hub.c | 4 ++-- 3 files changed, 31 insertions(+), 28 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/uhci-debug.c b/drivers/usb/host/uhci-debug.c index 8a55bb25315b..455737546525 100644 --- a/drivers/usb/host/uhci-debug.c +++ b/drivers/usb/host/uhci-debug.c @@ -151,8 +151,8 @@ static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, } } if (nactive + ninactive > 0) - out += sprintf(out, "%*s[skipped %d inactive and %d active " - "TDs]\n", + out += sprintf(out, + "%*s[skipped %d inactive and %d active TDs]\n", space, "", ninactive, nactive); done: if (out - buf > len) @@ -182,8 +182,8 @@ static int uhci_show_qh(struct uhci_hcd *uhci, hc32_to_cpu(uhci, qh->link), hc32_to_cpu(uhci, element)); if (qh->type == USB_ENDPOINT_XFER_ISOC) - out += sprintf(out, "%*s period %d phase %d load %d us, " - "frame %x desc [%p]\n", + out += sprintf(out, + "%*s period %d phase %d load %d us, frame %x desc [%p]\n", space, "", qh->period, qh->phase, qh->load, qh->iso_frame, qh->iso_packet_desc); else if (qh->type == USB_ENDPOINT_XFER_INT) @@ -434,8 +434,8 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len) tmp = tmp->next; if (link != LINK_TO_TD(uhci, td)) { if (nframes > 0) { - out += sprintf(out, " link does " - "not match list entry!\n"); + out += sprintf(out, + " link does not match list entry!\n"); if (out - buf > len) goto done; } else @@ -460,8 +460,8 @@ check_link: i, hc32_to_cpu(uhci, link)); j = 1; } - out += sprintf(out, " link does not match " - "QH (%08x)!\n", + out += sprintf(out, + " link does not match QH (%08x)!\n", hc32_to_cpu(uhci, qh_dma)); if (out - buf > len) goto done; @@ -483,7 +483,7 @@ check_link: int cnt = 0; qh = uhci->skelqh[i]; - out += sprintf(out, "- skel_%s_qh\n", qh_names[i]); \ + out += sprintf(out, "- skel_%s_qh\n", qh_names[i]); out += uhci_show_qh(uhci, qh, out, len - (out - buf), 4); if (out - buf > len) goto tail; @@ -491,7 +491,8 @@ check_link: /* Last QH is the Terminating QH, it's different */ if (i == SKEL_TERM) { if (qh_element(qh) != LINK_TO_TD(uhci, uhci->term_td)) { - out += sprintf(out, " skel_term_qh element is not set to term_td!\n"); + out += sprintf(out, + " skel_term_qh element is not set to term_td!\n"); if (out - buf > len) goto done; } @@ -530,7 +531,8 @@ check_link: link = LINK_TO_QH(uhci, uhci->skel_term_qh); check_qh_link: if (qh->link != link) - out += sprintf(out, " last QH not linked to next skeleton!\n"); + out += sprintf(out, + " last QH not linked to next skeleton!\n"); if (out - buf > len) goto done; @@ -587,7 +589,9 @@ static loff_t uhci_debug_lseek(struct file *file, loff_t off, int whence) up = file->private_data; - /* XXX: atomic 64bit seek access, but that needs to be fixed in the VFS */ + /* + * XXX: atomic 64bit seek access, but that needs to be fixed in the VFS + */ switch (whence) { case 0: new = off; diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index 7c12b260531b..01628e39cc8b 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -449,17 +449,16 @@ static irqreturn_t uhci_irq(struct usb_hcd *hcd) if (status & ~(USBSTS_USBINT | USBSTS_ERROR | USBSTS_RD)) { if (status & USBSTS_HSE) - dev_err(uhci_dev(uhci), "host system error, " - "PCI problems?\n"); + dev_err(uhci_dev(uhci), + "host system error, PCI problems?\n"); if (status & USBSTS_HCPE) - dev_err(uhci_dev(uhci), "host controller process " - "error, something bad happened!\n"); + dev_err(uhci_dev(uhci), + "host controller process error, something bad happened!\n"); if (status & USBSTS_HCH) { spin_lock(&uhci->lock); if (uhci->rh_state >= UHCI_RH_RUNNING) { dev_err(uhci_dev(uhci), - "host controller halted, " - "very bad!\n"); + "host controller halted, very bad!\n"); if (debug > 1 && errbuf) { /* Print the schedule for debugging */ uhci_sprint_schedule(uhci, errbuf, @@ -589,8 +588,8 @@ static int uhci_start(struct usb_hcd *hcd) UHCI_NUMFRAMES * sizeof(*uhci->frame), &uhci->frame_dma_handle, 0); if (!uhci->frame) { - dev_err(uhci_dev(uhci), "unable to allocate " - "consistent memory for frame list\n"); + dev_err(uhci_dev(uhci), + "unable to allocate consistent memory for frame list\n"); goto err_alloc_frame; } memset(uhci->frame, 0, UHCI_NUMFRAMES * sizeof(*uhci->frame)); @@ -598,8 +597,8 @@ static int uhci_start(struct usb_hcd *hcd) uhci->frame_cpu = kcalloc(UHCI_NUMFRAMES, sizeof(*uhci->frame_cpu), GFP_KERNEL); if (!uhci->frame_cpu) { - dev_err(uhci_dev(uhci), "unable to allocate " - "memory for frame pointers\n"); + dev_err(uhci_dev(uhci), + "unable to allocate memory for frame pointers\n"); goto err_alloc_frame_cpu; } @@ -734,8 +733,8 @@ static int uhci_rh_suspend(struct usb_hcd *hcd) */ else if (hcd->self.root_hub->do_remote_wakeup && uhci->resuming_ports) { - dev_dbg(uhci_dev(uhci), "suspend failed because a port " - "is resuming\n"); + dev_dbg(uhci_dev(uhci), + "suspend failed because a port is resuming\n"); rc = -EBUSY; } else suspend_rh(uhci, UHCI_RH_SUSPENDED); @@ -826,8 +825,8 @@ static int uhci_count_ports(struct usb_hcd *hcd) /* Anything greater than 7 is weird so we'll ignore it. */ if (port > UHCI_RH_MAXCHILD) { - dev_info(uhci_dev(uhci), "port count misdetected? " - "forcing to 2 ports\n"); + dev_info(uhci_dev(uhci), + "port count misdetected? forcing to 2 ports\n"); port = 2; } diff --git a/drivers/usb/host/uhci-hub.c b/drivers/usb/host/uhci-hub.c index 768d54295a20..533b864f2e67 100644 --- a/drivers/usb/host/uhci-hub.c +++ b/drivers/usb/host/uhci-hub.c @@ -21,8 +21,8 @@ static const __u8 root_hub_hub_des[] = 0x00, /* (per-port OC, no power switching) */ 0x01, /* __u8 bPwrOn2pwrGood; 2ms */ 0x00, /* __u8 bHubContrCurrent; 0 mA */ - 0x00, /* __u8 DeviceRemovable; *** 7 Ports max *** */ - 0xff /* __u8 PortPwrCtrlMask; *** 7 ports max *** */ + 0x00, /* __u8 DeviceRemovable; *** 7 Ports max */ + 0xff /* __u8 PortPwrCtrlMask; *** 7 ports max */ }; #define UHCI_RH_MAXCHILD 7 -- cgit v1.2.3 From bdb6bc06f7d694652c12fb8779bb031c2f220823 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Thu, 24 Jan 2013 15:04:13 -0500 Subject: USB: fix sign-extension bug in the hub driver This patch (as1646) fixes a long-standing bug in the USB hub driver. Upon conversion from char to unsigned long, the bytes in the status buffer are subject to unwanted sign extension. The bytes should be declared as u8 rather than char, to prevent this. This effects of this bug are minimal. The hub driver may end up doing a little unnecessary extra work because it thinks events have occurred on some ports when they really haven't. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index d16a7c98aea9..c472058f8f27 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -31,7 +31,7 @@ struct usb_hub { struct urb *urb; /* for interrupt polling pipe */ /* buffer for urb ... with extra space in case of babble */ - char (*buffer)[8]; + u8 (*buffer)[8]; union { struct usb_hub_status hub; struct usb_port_status port; -- cgit v1.2.3 From 6e2477777c8f1d4807437f7de11447319d426f8c Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Thu, 24 Jan 2013 19:15:29 +0530 Subject: usb: ehci-s5p/ohci-exynos: Fix compatible strings for the device Using specific chip in compatible strings. Newer SOCs can claim device by using older string in the compatible list. Signed-off-by: Vivek Gautam Acked-by: Grant Likely Reviewed-by: Doug Anderson Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-s5p.c | 2 +- drivers/usb/host/ohci-exynos.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c index 319dcfaa8735..f18e6ac081aa 100644 --- a/drivers/usb/host/ehci-s5p.c +++ b/drivers/usb/host/ehci-s5p.c @@ -266,7 +266,7 @@ static const struct dev_pm_ops s5p_ehci_pm_ops = { #ifdef CONFIG_OF static const struct of_device_id exynos_ehci_match[] = { - { .compatible = "samsung,exynos-ehci" }, + { .compatible = "samsung,exynos4210-ehci" }, {}, }; MODULE_DEVICE_TABLE(of, exynos_ehci_match); diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c index aa3b8844bb9f..77f2017c33c4 100644 --- a/drivers/usb/host/ohci-exynos.c +++ b/drivers/usb/host/ohci-exynos.c @@ -267,7 +267,7 @@ static const struct dev_pm_ops exynos_ohci_pm_ops = { #ifdef CONFIG_OF static const struct of_device_id exynos_ohci_match[] = { - { .compatible = "samsung,exynos-ohci" }, + { .compatible = "samsung,exynos4210-ohci" }, {}, }; MODULE_DEVICE_TABLE(of, exynos_ohci_match); -- cgit v1.2.3 From fe29db8fb22f5aa67af4bf30b85a0451c989a88b Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Thu, 24 Jan 2013 19:15:30 +0530 Subject: usb: dwc3: exynos: fix compatible strings for the device Using specific chip in compatible strings. Newer SOCs can claim device by using older string in the compatible list. Signed-off-by: Vivek Gautam Acked-by: Grant Likely Reviewed-by: Doug Anderson Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-exynos.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index 90e05e60c3fe..1e955517c6fa 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -183,7 +183,7 @@ static int dwc3_exynos_remove(struct platform_device *pdev) #ifdef CONFIG_OF static const struct of_device_id exynos_dwc3_match[] = { - { .compatible = "samsung,exynos-dwc3" }, + { .compatible = "samsung,exynos5250-dwusb3" }, {}, }; MODULE_DEVICE_TABLE(of, exynos_dwc3_match); -- cgit v1.2.3 From 94c6a436f606836dcb1ba0156757cea7f17a2102 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:30:45 +0530 Subject: usb: dwc3: omap: use device_for_each_child to handle child removal Used device_for_each_child() to handle child device (dwc3 core) removal during devexit of dwc3 omap. This is in preparation for creating the child devices from subnode of dwc3 omap glue using of_platform_populate. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index f31867fd2574..1d03a8acffab 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -262,6 +262,15 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) return IRQ_HANDLED; } +static int dwc3_omap_remove_core(struct device *dev, void *c) +{ + struct platform_device *pdev = to_platform_device(dev); + + platform_device_unregister(pdev); + + return 0; +} + static int dwc3_omap_probe(struct platform_device *pdev) { struct dwc3_omap_data *pdata = pdev->dev.platform_data; @@ -425,9 +434,10 @@ static int dwc3_omap_remove(struct platform_device *pdev) { struct dwc3_omap *omap = platform_get_drvdata(pdev); - platform_device_unregister(omap->dwc3); platform_device_unregister(omap->usb2_phy); platform_device_unregister(omap->usb3_phy); + device_for_each_child(&pdev->dev, NULL, dwc3_omap_remove_core); + return 0; } -- cgit v1.2.3 From b4bfe6aa9b36c5ff42d96c64e2df7e36a8c61dfb Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:30:46 +0530 Subject: usb: dwc3: omap: use of_platform API to create dwc3 core pdev Used of_platform_populate() to create dwc3 core platform_device from device tree data. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 40 ++++++++++------------------------------ 1 file changed, 10 insertions(+), 30 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 1d03a8acffab..78bb2f668f1f 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -47,6 +47,7 @@ #include #include #include +#include #include #include @@ -133,7 +134,6 @@ struct dwc3_omap { /* device lock */ spinlock_t lock; - struct platform_device *dwc3; struct platform_device *usb2_phy; struct platform_device *usb3_phy; struct device *dev; @@ -276,7 +276,6 @@ static int dwc3_omap_probe(struct platform_device *pdev) struct dwc3_omap_data *pdata = pdev->dev.platform_data; struct device_node *node = pdev->dev.of_node; - struct platform_device *dwc3; struct dwc3_omap *omap; struct resource *res; struct device *dev = &pdev->dev; @@ -323,30 +322,19 @@ static int dwc3_omap_probe(struct platform_device *pdev) return ret; } - dwc3 = platform_device_alloc("dwc3", PLATFORM_DEVID_AUTO); - if (!dwc3) { - dev_err(dev, "couldn't allocate dwc3 device\n"); - return -ENOMEM; - } - context = devm_kzalloc(dev, resource_size(res), GFP_KERNEL); if (!context) { dev_err(dev, "couldn't allocate dwc3 context memory\n"); - goto err2; + return -ENOMEM; } spin_lock_init(&omap->lock); - dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask); - dwc3->dev.parent = dev; - dwc3->dev.dma_mask = dev->dma_mask; - dwc3->dev.dma_parms = dev->dma_parms; omap->resource_size = resource_size(res); omap->context = context; omap->dev = dev; omap->irq = irq; omap->base = base; - omap->dwc3 = dwc3; reg = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); @@ -391,7 +379,7 @@ static int dwc3_omap_probe(struct platform_device *pdev) if (ret) { dev_err(dev, "failed to request IRQ #%d --> %d\n", omap->irq, ret); - goto err2; + return ret; } /* enable all IRQs */ @@ -410,24 +398,16 @@ static int dwc3_omap_probe(struct platform_device *pdev) dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_1, reg); - ret = platform_device_add_resources(dwc3, pdev->resource, - pdev->num_resources); - if (ret) { - dev_err(dev, "couldn't add resources to dwc3 device\n"); - goto err2; - } - - ret = platform_device_add(dwc3); - if (ret) { - dev_err(dev, "failed to register dwc3 device\n"); - goto err2; + if (node) { + ret = of_platform_populate(node, NULL, NULL, dev); + if (ret) { + dev_err(&pdev->dev, + "failed to add create dwc3 core\n"); + return ret; + } } return 0; - -err2: - platform_device_put(dwc3); - return ret; } static int dwc3_omap_remove(struct platform_device *pdev) -- cgit v1.2.3 From af310e96a05bdea2517d639e46e2aea3aef21c5c Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:30:47 +0530 Subject: usb: dwc3: omap: use runtime API's to enable clocks Before accessing any register, runtime API's should be invoked to enable the clocks. runtime API's are added here to prevent abort during register access. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 78bb2f668f1f..80942301893c 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -43,6 +43,7 @@ #include #include #include +#include #include #include #include @@ -336,6 +337,13 @@ static int dwc3_omap_probe(struct platform_device *pdev) omap->irq = irq; omap->base = base; + pm_runtime_enable(dev); + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + dev_err(dev, "get_sync failed with err %d\n", ret); + return ret; + } + reg = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); utmi_mode = of_get_property(node, "utmi-mode", &size); @@ -416,6 +424,8 @@ static int dwc3_omap_remove(struct platform_device *pdev) platform_device_unregister(omap->usb2_phy); platform_device_unregister(omap->usb3_phy); + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); device_for_each_child(&pdev->dev, NULL, dwc3_omap_remove_core); return 0; -- cgit v1.2.3 From 6373218da195e9baade9416727720646b3a622aa Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:30:48 +0530 Subject: usb: dwc3: omap: Remove explicit writes to SYSCONFIG register The runtime API's takes care of setting the SYSCONFIG register with appropriate values. Hence explicit writes to SYSCONFIG register is removed. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 26 -------------------------- 1 file changed, 26 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 80942301893c..f85ae5e6129d 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -80,23 +80,6 @@ /* SYSCONFIG REGISTER */ #define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16) -#define USBOTGSS_SYSCONFIG_STANDBYMODE(x) ((x) << 4) - -#define USBOTGSS_STANDBYMODE_FORCE_STANDBY 0 -#define USBOTGSS_STANDBYMODE_NO_STANDBY 1 -#define USBOTGSS_STANDBYMODE_SMART_STANDBY 2 -#define USBOTGSS_STANDBYMODE_SMART_WAKEUP 3 - -#define USBOTGSS_STANDBYMODE_MASK (0x03 << 4) - -#define USBOTGSS_SYSCONFIG_IDLEMODE(x) ((x) << 2) - -#define USBOTGSS_IDLEMODE_FORCE_IDLE 0 -#define USBOTGSS_IDLEMODE_NO_IDLE 1 -#define USBOTGSS_IDLEMODE_SMART_IDLE 2 -#define USBOTGSS_IDLEMODE_SMART_WAKEUP 3 - -#define USBOTGSS_IDLEMODE_MASK (0x03 << 2) /* IRQ_EOI REGISTER */ #define USBOTGSS_IRQ_EOI_LINE_NUMBER (1 << 0) @@ -373,15 +356,6 @@ static int dwc3_omap_probe(struct platform_device *pdev) reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG); omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE); - /* Set No-Idle and No-Standby */ - reg &= ~(USBOTGSS_STANDBYMODE_MASK - | USBOTGSS_IDLEMODE_MASK); - - reg |= (USBOTGSS_SYSCONFIG_STANDBYMODE(USBOTGSS_STANDBYMODE_NO_STANDBY) - | USBOTGSS_SYSCONFIG_IDLEMODE(USBOTGSS_IDLEMODE_NO_IDLE)); - - dwc3_omap_writel(omap->base, USBOTGSS_SYSCONFIG, reg); - ret = devm_request_irq(dev, omap->irq, dwc3_omap_interrupt, 0, "dwc3-omap", omap); if (ret) { -- cgit v1.2.3 From 7e41bba94617b7e4f77d3531a63fbfacdf6842a6 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:30:49 +0530 Subject: usb: dwc3: omap: Add an API to write to dwc mailbox Add an API in the omap glue layer to write to the mailbox register which can be used by comparator driver(twl). To pass the detection of the attached device (signified by VBUS, ID) to the dwc3 core, dwc3 core has to write to the mailbox regiter. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 60 +++++++++++++++++++++++++++++++++++++++++++ include/linux/usb/dwc3-omap.h | 30 ++++++++++++++++++++++ 2 files changed, 90 insertions(+) create mode 100644 include/linux/usb/dwc3-omap.h (limited to 'drivers') diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index f85ae5e6129d..831b75fa4386 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -43,6 +43,7 @@ #include #include #include +#include #include #include #include @@ -131,6 +132,8 @@ struct dwc3_omap { u32 dma_status:1; }; +struct dwc3_omap *_omap; + static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset) { return readl(base + offset); @@ -141,6 +144,57 @@ static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value) writel(value, base + offset); } +void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) +{ + u32 val; + struct dwc3_omap *omap = _omap; + + switch (status) { + case OMAP_DWC3_ID_GROUND: + dev_dbg(omap->dev, "ID GND\n"); + + val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); + val &= ~(USBOTGSS_UTMI_OTG_STATUS_IDDIG + | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID + | USBOTGSS_UTMI_OTG_STATUS_SESSEND); + val |= USBOTGSS_UTMI_OTG_STATUS_SESSVALID + | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT; + dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); + break; + + case OMAP_DWC3_VBUS_VALID: + dev_dbg(omap->dev, "VBUS Connect\n"); + + val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); + val &= ~USBOTGSS_UTMI_OTG_STATUS_SESSEND; + val |= USBOTGSS_UTMI_OTG_STATUS_IDDIG + | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID + | USBOTGSS_UTMI_OTG_STATUS_SESSVALID + | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT; + dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); + break; + + case OMAP_DWC3_ID_FLOAT: + case OMAP_DWC3_VBUS_OFF: + dev_dbg(omap->dev, "VBUS Disconnect\n"); + + val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); + val &= ~(USBOTGSS_UTMI_OTG_STATUS_SESSVALID + | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID + | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT); + val |= USBOTGSS_UTMI_OTG_STATUS_SESSEND + | USBOTGSS_UTMI_OTG_STATUS_IDDIG; + dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val); + break; + + default: + dev_dbg(omap->dev, "ID float\n"); + } + + return; +} +EXPORT_SYMBOL_GPL(dwc3_omap_mailbox); + static int dwc3_omap_register_phys(struct dwc3_omap *omap) { struct nop_usb_xceiv_platform_data pdata; @@ -320,6 +374,12 @@ static int dwc3_omap_probe(struct platform_device *pdev) omap->irq = irq; omap->base = base; + /* + * REVISIT if we ever have two instances of the wrapper, we will be + * in big trouble + */ + _omap = omap; + pm_runtime_enable(dev); ret = pm_runtime_get_sync(dev); if (ret < 0) { diff --git a/include/linux/usb/dwc3-omap.h b/include/linux/usb/dwc3-omap.h new file mode 100644 index 000000000000..51eae14477f7 --- /dev/null +++ b/include/linux/usb/dwc3-omap.h @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2013 by Texas Instruments + * + * The Inventra Controller Driver for Linux is free software; you + * can redistribute it and/or modify it under the terms of the GNU + * General Public License version 2 as published by the Free Software + * Foundation. + */ + +#ifndef __DWC3_OMAP_H__ +#define __DWC3_OMAP_H__ + +enum omap_dwc3_vbus_id_status { + OMAP_DWC3_UNKNOWN = 0, + OMAP_DWC3_ID_GROUND, + OMAP_DWC3_ID_FLOAT, + OMAP_DWC3_VBUS_VALID, + OMAP_DWC3_VBUS_OFF, +}; + +#if (defined(CONFIG_USB_DWC3) || defined(CONFIG_USB_DWC3_MODULE)) +extern void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status); +#else +static inline void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) +{ + return; +} +#endif + +#endif /* __DWC3_OMAP_H__ */ -- cgit v1.2.3 From 8ba007a971bb236be017cb8351c383ce6eadf095 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:30:54 +0530 Subject: usb: dwc3: core: enable the USB2 and USB3 phy in probe Enabled the USB2 and USB3 PHY in probe by calling usb_phy_set_suspend and disabled the PHYs on driver removal. When PM is implemented this will be optimized to enable the PHYs only when needed. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 3a4004a620ad..f994d318df9a 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -432,6 +432,9 @@ static int dwc3_probe(struct platform_device *pdev) return -EPROBE_DEFER; } + usb_phy_set_suspend(dwc->usb2_phy, 0); + usb_phy_set_suspend(dwc->usb3_phy, 0); + spin_lock_init(&dwc->lock); platform_set_drvdata(pdev, dwc); @@ -554,6 +557,9 @@ static int dwc3_remove(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + usb_phy_set_suspend(dwc->usb2_phy, 1); + usb_phy_set_suspend(dwc->usb3_phy, 1); + pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); -- cgit v1.2.3 From 5ea921320f0e64f07a41d35903f1d458c3a9bcd3 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:30:55 +0530 Subject: usb: dwc3: core: stray statements are removed No functional change. Stray statements where removed from dwc3 core. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index f994d318df9a..177f4c61acab 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -553,9 +553,6 @@ err0: static int dwc3_remove(struct platform_device *pdev) { struct dwc3 *dwc = platform_get_drvdata(pdev); - struct resource *res; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); usb_phy_set_suspend(dwc->usb2_phy, 1); usb_phy_set_suspend(dwc->usb3_phy, 1); -- cgit v1.2.3 From b4a83e4df1bc864e89d3bb90e97f9caab656545d Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:03:21 +0530 Subject: usb: otg: add an api to bind the usb controller and phy In order to support platforms which has multiple PHY's (of same type) and which has multiple USB controllers, a new design is adopted wherin the binding information (between the PHY and the USB controller) should be passed to the PHY library from platform specific file (board file). So added a new API to pass the binding information. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/otg/otg.c | 37 +++++++++++++++++++++++++++++++++++++ include/linux/usb/phy.h | 22 ++++++++++++++++++++++ 2 files changed, 59 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c index a30c04115115..8e756d95a28f 100644 --- a/drivers/usb/otg/otg.c +++ b/drivers/usb/otg/otg.c @@ -18,6 +18,7 @@ #include static LIST_HEAD(phy_list); +static LIST_HEAD(phy_bind_list); static DEFINE_SPINLOCK(phy_lock); static struct usb_phy *__usb_find_phy(struct list_head *list, @@ -201,6 +202,42 @@ void usb_remove_phy(struct usb_phy *x) } EXPORT_SYMBOL(usb_remove_phy); +/** + * usb_bind_phy - bind the phy and the controller that uses the phy + * @dev_name: the device name of the device that will bind to the phy + * @index: index to specify the port number + * @phy_dev_name: the device name of the phy + * + * Fills the phy_bind structure with the dev_name and phy_dev_name. This will + * be used when the phy driver registers the phy and when the controller + * requests this phy. + * + * To be used by platform specific initialization code. + */ +int __init usb_bind_phy(const char *dev_name, u8 index, + const char *phy_dev_name) +{ + struct usb_phy_bind *phy_bind; + unsigned long flags; + + phy_bind = kzalloc(sizeof(*phy_bind), GFP_KERNEL); + if (!phy_bind) { + pr_err("phy_bind(): No memory for phy_bind"); + return -ENOMEM; + } + + phy_bind->dev_name = dev_name; + phy_bind->phy_dev_name = phy_dev_name; + phy_bind->index = index; + + spin_lock_irqsave(&phy_lock, flags); + list_add_tail(&phy_bind->list, &phy_bind_list); + spin_unlock_irqrestore(&phy_lock, flags); + + return 0; +} +EXPORT_SYMBOL_GPL(usb_bind_phy); + const char *otg_state_string(enum usb_otg_state state) { switch (state) { diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h index a29ae1eb9346..a812ed5a1691 100644 --- a/include/linux/usb/phy.h +++ b/include/linux/usb/phy.h @@ -106,6 +106,21 @@ struct usb_phy { enum usb_device_speed speed); }; +/** + * struct usb_phy_bind - represent the binding for the phy + * @dev_name: the device name of the device that will bind to the phy + * @phy_dev_name: the device name of the phy + * @index: used if a single controller uses multiple phys + * @phy: reference to the phy + * @list: to maintain a linked list of the binding information + */ +struct usb_phy_bind { + const char *dev_name; + const char *phy_dev_name; + u8 index; + struct usb_phy *phy; + struct list_head list; +}; /* for board-specific init logic */ extern int usb_add_phy(struct usb_phy *, enum usb_phy_type type); @@ -151,6 +166,8 @@ extern struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type); extern void usb_put_phy(struct usb_phy *); extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x); +extern int usb_bind_phy(const char *dev_name, u8 index, + const char *phy_dev_name); #else static inline struct usb_phy *usb_get_phy(enum usb_phy_type type) { @@ -171,6 +188,11 @@ static inline void devm_usb_put_phy(struct device *dev, struct usb_phy *x) { } +static inline int usb_bind_phy(const char *dev_name, u8 index, + const char *phy_dev_name) +{ + return -EOPNOTSUPP; +} #endif static inline int -- cgit v1.2.3 From 0fa4fab4ee46470ccd463c83be95434936942e05 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:03:22 +0530 Subject: usb: otg: utils: add facilities in phy lib to support multiple PHYs of same type In order to add support for multipe PHY's of the same type, new API's for adding PHY and getting PHY has been added. Now the binding information for the PHY and controller should be done in platform file using usb_bind_phy API. And for getting a PHY, the device pointer of the USB controller and an index should be passed. Based on the binding information that is added in the platform file, usb_get_phy_dev will return the appropriate PHY. Already existing API's to add and get phy by type is not removed. These API's are deprecated and will be removed once all the platforms start to use the new API. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/otg/otg.c | 118 +++++++++++++++++++++++++++++++++++++++++++++++- include/linux/usb/phy.h | 13 ++++++ 2 files changed, 130 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c index 8e756d95a28f..4bb4333c9653 100644 --- a/drivers/usb/otg/otg.c +++ b/drivers/usb/otg/otg.c @@ -36,6 +36,24 @@ static struct usb_phy *__usb_find_phy(struct list_head *list, return ERR_PTR(-ENODEV); } +static struct usb_phy *__usb_find_phy_dev(struct device *dev, + struct list_head *list, u8 index) +{ + struct usb_phy_bind *phy_bind = NULL; + + list_for_each_entry(phy_bind, list, list) { + if (!(strcmp(phy_bind->dev_name, dev_name(dev))) && + phy_bind->index == index) { + if (phy_bind->phy) + return phy_bind->phy; + else + return ERR_PTR(-EPROBE_DEFER); + } + } + + return ERR_PTR(-ENODEV); +} + static void devm_usb_phy_release(struct device *dev, void *res) { struct usb_phy *phy = *(struct usb_phy **)res; @@ -111,6 +129,69 @@ err0: } EXPORT_SYMBOL(usb_get_phy); +/** + * usb_get_phy_dev - find the USB PHY + * @dev - device that requests this phy + * @index - the index of the phy + * + * Returns the phy driver, after getting a refcount to it; or + * -ENODEV if there is no such phy. The caller is responsible for + * calling usb_put_phy() to release that count. + * + * For use by USB host and peripheral drivers. + */ +struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index) +{ + struct usb_phy *phy = NULL; + unsigned long flags; + + spin_lock_irqsave(&phy_lock, flags); + + phy = __usb_find_phy_dev(dev, &phy_bind_list, index); + if (IS_ERR(phy)) { + pr_err("unable to find transceiver\n"); + goto err0; + } + + get_device(phy->dev); + +err0: + spin_unlock_irqrestore(&phy_lock, flags); + + return phy; +} +EXPORT_SYMBOL(usb_get_phy_dev); + +/** + * devm_usb_get_phy_dev - find the USB PHY using device ptr and index + * @dev - device that requests this phy + * @index - the index of the phy + * + * Gets the phy using usb_get_phy_dev(), and associates a device with it using + * devres. On driver detach, release function is invoked on the devres data, + * then, devres data is freed. + * + * For use by USB host and peripheral drivers. + */ +struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index) +{ + struct usb_phy **ptr, *phy; + + ptr = devres_alloc(devm_usb_phy_release, sizeof(*ptr), GFP_KERNEL); + if (!ptr) + return NULL; + + phy = usb_get_phy_dev(dev, index); + if (!IS_ERR(phy)) { + *ptr = phy; + devres_add(dev, ptr); + } else + devres_free(ptr); + + return phy; +} +EXPORT_SYMBOL(devm_usb_get_phy_dev); + /** * devm_usb_put_phy - release the USB PHY * @dev - device that wants to release this phy @@ -185,6 +266,36 @@ out: } EXPORT_SYMBOL(usb_add_phy); +/** + * usb_add_phy_dev - declare the USB PHY + * @x: the USB phy to be used; or NULL + * + * This call is exclusively for use by phy drivers, which + * coordinate the activities of drivers for host and peripheral + * controllers, and in some cases for VBUS current regulation. + */ +int usb_add_phy_dev(struct usb_phy *x) +{ + struct usb_phy_bind *phy_bind; + unsigned long flags; + + if (!x->dev) { + dev_err(x->dev, "no device provided for PHY\n"); + return -EINVAL; + } + + spin_lock_irqsave(&phy_lock, flags); + list_for_each_entry(phy_bind, &phy_bind_list, list) + if (!(strcmp(phy_bind->phy_dev_name, dev_name(x->dev)))) + phy_bind->phy = x; + + list_add_tail(&x->head, &phy_list); + + spin_unlock_irqrestore(&phy_lock, flags); + return 0; +} +EXPORT_SYMBOL(usb_add_phy_dev); + /** * usb_remove_phy - remove the OTG PHY * @x: the USB OTG PHY to be removed; @@ -194,10 +305,15 @@ EXPORT_SYMBOL(usb_add_phy); void usb_remove_phy(struct usb_phy *x) { unsigned long flags; + struct usb_phy_bind *phy_bind; spin_lock_irqsave(&phy_lock, flags); - if (x) + if (x) { + list_for_each_entry(phy_bind, &phy_bind_list, list) + if (phy_bind->phy == x) + phy_bind->phy = NULL; list_del(&x->head); + } spin_unlock_irqrestore(&phy_lock, flags); } EXPORT_SYMBOL(usb_remove_phy); diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h index a812ed5a1691..359db7de61e4 100644 --- a/include/linux/usb/phy.h +++ b/include/linux/usb/phy.h @@ -124,6 +124,7 @@ struct usb_phy_bind { /* for board-specific init logic */ extern int usb_add_phy(struct usb_phy *, enum usb_phy_type type); +extern int usb_add_phy_dev(struct usb_phy *); extern void usb_remove_phy(struct usb_phy *); /* helpers for direct access thru low-level io interface */ @@ -164,6 +165,8 @@ usb_phy_shutdown(struct usb_phy *x) extern struct usb_phy *usb_get_phy(enum usb_phy_type type); extern struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type); +extern struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index); +extern struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index); extern void usb_put_phy(struct usb_phy *); extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x); extern int usb_bind_phy(const char *dev_name, u8 index, @@ -180,6 +183,16 @@ static inline struct usb_phy *devm_usb_get_phy(struct device *dev, return NULL; } +static inline struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index) +{ + return NULL; +} + +static inline struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index) +{ + return NULL; +} + static inline void usb_put_phy(struct usb_phy *x) { } -- cgit v1.2.3 From 5d3c28b5a42df5ceaa854901ba2cccb76883c77e Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:03:25 +0530 Subject: usb: otg: add device tree support to otg library Added an API devm_usb_get_phy_by_phandle(), to get usb phy by passing a device node phandle value. This function will return a pointer to the phy on success, -EPROBE_DEFER if there is a device_node for the phandle, but the phy has not been added, or a ERR_PTR() otherwise. Cc: Marc Kleine-Budde Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/otg/otg.c | 80 +++++++++++++++++++++++++++++++++++++++++++++++++ include/linux/usb/phy.h | 8 +++++ 2 files changed, 88 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c index 4bb4333c9653..e1814397ca3a 100644 --- a/drivers/usb/otg/otg.c +++ b/drivers/usb/otg/otg.c @@ -13,7 +13,9 @@ #include #include #include +#include #include +#include #include @@ -54,6 +56,20 @@ static struct usb_phy *__usb_find_phy_dev(struct device *dev, return ERR_PTR(-ENODEV); } +static struct usb_phy *__of_usb_find_phy(struct device_node *node) +{ + struct usb_phy *phy; + + list_for_each_entry(phy, &phy_list, head) { + if (node != phy->dev->of_node) + continue; + + return phy; + } + + return ERR_PTR(-ENODEV); +} + static void devm_usb_phy_release(struct device *dev, void *res) { struct usb_phy *phy = *(struct usb_phy **)res; @@ -129,6 +145,70 @@ err0: } EXPORT_SYMBOL(usb_get_phy); + /** + * devm_usb_get_phy_by_phandle - find the USB PHY by phandle + * @dev - device that requests this phy + * @phandle - name of the property holding the phy phandle value + * @index - the index of the phy + * + * Returns the phy driver associated with the given phandle value, + * after getting a refcount to it, -ENODEV if there is no such phy or + * -EPROBE_DEFER if there is a phandle to the phy, but the device is + * not yet loaded. While at that, it also associates the device with + * the phy using devres. On driver detach, release function is invoked + * on the devres data, then, devres data is freed. + * + * For use by USB host and peripheral drivers. + */ +struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev, + const char *phandle, u8 index) +{ + struct usb_phy *phy = ERR_PTR(-ENOMEM), **ptr; + unsigned long flags; + struct device_node *node; + + if (!dev->of_node) { + dev_dbg(dev, "device does not have a device node entry\n"); + return ERR_PTR(-EINVAL); + } + + node = of_parse_phandle(dev->of_node, phandle, index); + if (!node) { + dev_dbg(dev, "failed to get %s phandle in %s node\n", phandle, + dev->of_node->full_name); + return ERR_PTR(-ENODEV); + } + + ptr = devres_alloc(devm_usb_phy_release, sizeof(*ptr), GFP_KERNEL); + if (!ptr) { + dev_dbg(dev, "failed to allocate memory for devres\n"); + goto err0; + } + + spin_lock_irqsave(&phy_lock, flags); + + phy = __of_usb_find_phy(node); + if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) { + phy = ERR_PTR(-EPROBE_DEFER); + devres_free(ptr); + goto err1; + } + + *ptr = phy; + devres_add(dev, ptr); + + get_device(phy->dev); + +err1: + spin_unlock_irqrestore(&phy_lock, flags); + +err0: + of_node_put(node); + + return phy; +} +EXPORT_SYMBOL(devm_usb_get_phy_by_phandle); + /** * usb_get_phy_dev - find the USB PHY * @dev - device that requests this phy diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h index 359db7de61e4..15847cbdb512 100644 --- a/include/linux/usb/phy.h +++ b/include/linux/usb/phy.h @@ -167,6 +167,8 @@ extern struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type); extern struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index); extern struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index); +extern struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev, + const char *phandle, u8 index); extern void usb_put_phy(struct usb_phy *); extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x); extern int usb_bind_phy(const char *dev_name, u8 index, @@ -193,6 +195,12 @@ static inline struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index) return NULL; } +static inline struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev, + const char *phandle, u8 index) +{ + return NULL; +} + static inline void usb_put_phy(struct usb_phy *x) { } -- cgit v1.2.3 From 01658f0f8d1322dbf94f289aa610731d539bf888 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 15:53:57 +0530 Subject: usb: phy: add a new driver for usb part of control module Added a new driver for the usb part of control module. This has an API to power on the USB2 phy and an API to write to the mailbox depending on whether MUSB has to act in host mode or in device mode. Writing to control module registers for doing the above task which was previously done in omap glue and in omap-usb2 phy will be removed. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- Documentation/devicetree/bindings/usb/omap-usb.txt | 30 ++- Documentation/devicetree/bindings/usb/usb-phy.txt | 5 + drivers/usb/phy/Kconfig | 10 + drivers/usb/phy/Makefile | 1 + drivers/usb/phy/omap-control-usb.c | 295 +++++++++++++++++++++ include/linux/usb/omap_control_usb.h | 92 +++++++ 6 files changed, 432 insertions(+), 1 deletion(-) create mode 100644 drivers/usb/phy/omap-control-usb.c create mode 100644 include/linux/usb/omap_control_usb.h (limited to 'drivers') diff --git a/Documentation/devicetree/bindings/usb/omap-usb.txt b/Documentation/devicetree/bindings/usb/omap-usb.txt index 29a043ecda52..3d78cc2b486e 100644 --- a/Documentation/devicetree/bindings/usb/omap-usb.txt +++ b/Documentation/devicetree/bindings/usb/omap-usb.txt @@ -1,4 +1,4 @@ -OMAP GLUE +OMAP GLUE AND OTHER OMAP SPECIFIC COMPONENTS OMAP MUSB GLUE - compatible : Should be "ti,omap4-musb" or "ti,omap3-musb" @@ -16,6 +16,10 @@ OMAP MUSB GLUE - power : Should be "50". This signifies the controller can supply upto 100mA when operating in host mode. +Optional properties: + - ctrl-module : phandle of the control module this glue uses to write to + mailbox + SOC specific device node entry usb_otg_hs: usb_otg_hs@4a0ab000 { compatible = "ti,omap4-musb"; @@ -23,6 +27,7 @@ usb_otg_hs: usb_otg_hs@4a0ab000 { multipoint = <1>; num_eps = <16>; ram_bits = <12>; + ctrl-module = <&omap_control_usb>; }; Board specific device node entry @@ -31,3 +36,26 @@ Board specific device node entry mode = <3>; power = <50>; }; + +OMAP CONTROL USB + +Required properties: + - compatible: Should be "ti,omap-control-usb" + - reg : Address and length of the register set for the device. It contains + the address of "control_dev_conf" and "otghs_control" or "phy_power_usb" + depending upon omap4 or omap5. + - reg-names: The names of the register addresses corresponding to the registers + filled in "reg". + - ti,type: This is used to differentiate whether the control module has + usb mailbox or usb3 phy power. omap4 has usb mailbox in control module to + notify events to the musb core and omap5 has usb3 phy power register to + power on usb3 phy. Should be "1" if it has mailbox and "2" if it has usb3 + phy power. + +omap_control_usb: omap-control-usb@4a002300 { + compatible = "ti,omap-control-usb"; + reg = <0x4a002300 0x4>, + <0x4a00233c 0x4>; + reg-names = "control_dev_conf", "otghs_control"; + ti,type = <1>; +}; diff --git a/Documentation/devicetree/bindings/usb/usb-phy.txt b/Documentation/devicetree/bindings/usb/usb-phy.txt index 80d4148cb661..4234105302db 100644 --- a/Documentation/devicetree/bindings/usb/usb-phy.txt +++ b/Documentation/devicetree/bindings/usb/usb-phy.txt @@ -8,10 +8,15 @@ Required properties: add the address of control module dev conf register until a driver for control module is added +Optional properties: + - ctrl-module : phandle of the control module used by PHY driver to power on + the PHY. + This is usually a subnode of ocp2scp to which it is connected. usb2phy@4a0ad080 { compatible = "ti,omap-usb2"; reg = <0x4a0ad080 0x58>, <0x4a002300 0x4>; + ctrl-module = <&omap_control_usb>; }; diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index fae4d08c0ddd..053696a2b6ef 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -14,6 +14,16 @@ config OMAP_USB2 The USB OTG controller communicates with the comparator using this driver. +config OMAP_CONTROL_USB + tristate "OMAP CONTROL USB Driver" + depends on ARCH_OMAP2PLUS + help + Enable this to add support for the USB part present in the control + module. This driver has API to power on the USB2 PHY and to write to + the mailbox. The mailbox is present only in omap4 and the register to + power on the USB2 PHY is present in OMAP4 and OMAP5. OMAP5 has an + additional register to power on USB3 PHY. + config USB_ISP1301 tristate "NXP ISP1301 USB transceiver support" depends on USB || USB_GADGET diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index ec304f642402..ee977671f530 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -5,6 +5,7 @@ ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG obj-$(CONFIG_OMAP_USB2) += omap-usb2.o +obj-$(CONFIG_OMAP_CONTROL_USB) += omap-control-usb.o obj-$(CONFIG_USB_ISP1301) += isp1301.o obj-$(CONFIG_MV_U3D_PHY) += mv_u3d_phy.o obj-$(CONFIG_USB_EHCI_TEGRA) += tegra_usb_phy.o diff --git a/drivers/usb/phy/omap-control-usb.c b/drivers/usb/phy/omap-control-usb.c new file mode 100644 index 000000000000..5323b71c3521 --- /dev/null +++ b/drivers/usb/phy/omap-control-usb.c @@ -0,0 +1,295 @@ +/* + * omap-control-usb.c - The USB part of control module. + * + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Author: Kishon Vijay Abraham I + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +static struct omap_control_usb *control_usb; + +/** + * omap_get_control_dev - returns the device pointer for this control device + * + * This API should be called to get the device pointer for this control + * module device. This device pointer should be used for called other + * exported API's in this driver. + * + * To be used by PHY driver and glue driver. + */ +struct device *omap_get_control_dev(void) +{ + if (!control_usb) + return ERR_PTR(-ENODEV); + + return control_usb->dev; +} +EXPORT_SYMBOL_GPL(omap_get_control_dev); + +/** + * omap_control_usb3_phy_power - power on/off the serializer using control + * module + * @dev: the control module device + * @on: 0 to off and 1 to on based on powering on or off the PHY + * + * usb3 PHY driver should call this API to power on or off the PHY. + */ +void omap_control_usb3_phy_power(struct device *dev, bool on) +{ + u32 val; + unsigned long rate; + struct omap_control_usb *control_usb = dev_get_drvdata(dev); + + if (control_usb->type != OMAP_CTRL_DEV_TYPE2) + return; + + rate = clk_get_rate(control_usb->sys_clk); + rate = rate/1000000; + + val = readl(control_usb->phy_power); + + if (on) { + val &= ~(OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK | + OMAP_CTRL_USB_PWRCTL_CLK_FREQ_MASK); + val |= OMAP_CTRL_USB3_PHY_TX_RX_POWERON << + OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT; + val |= rate << OMAP_CTRL_USB_PWRCTL_CLK_FREQ_SHIFT; + } else { + val &= ~OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK; + val |= OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF << + OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT; + } + + writel(val, control_usb->phy_power); +} +EXPORT_SYMBOL_GPL(omap_control_usb3_phy_power); + +/** + * omap_control_usb_phy_power - power on/off the phy using control module reg + * @dev: the control module device + * @on: 0 or 1, based on powering on or off the PHY + */ +void omap_control_usb_phy_power(struct device *dev, int on) +{ + u32 val; + struct omap_control_usb *control_usb = dev_get_drvdata(dev); + + val = readl(control_usb->dev_conf); + + if (on) + val &= ~OMAP_CTRL_DEV_PHY_PD; + else + val |= OMAP_CTRL_DEV_PHY_PD; + + writel(val, control_usb->dev_conf); +} +EXPORT_SYMBOL_GPL(omap_control_usb_phy_power); + +/** + * omap_control_usb_host_mode - set AVALID, VBUSVALID and ID pin in grounded + * @ctrl_usb: struct omap_control_usb * + * + * Writes to the mailbox register to notify the usb core that a usb + * device has been connected. + */ +static void omap_control_usb_host_mode(struct omap_control_usb *ctrl_usb) +{ + u32 val; + + val = readl(ctrl_usb->otghs_control); + val &= ~(OMAP_CTRL_DEV_IDDIG | OMAP_CTRL_DEV_SESSEND); + val |= OMAP_CTRL_DEV_AVALID | OMAP_CTRL_DEV_VBUSVALID; + writel(val, ctrl_usb->otghs_control); +} + +/** + * omap_control_usb_device_mode - set AVALID, VBUSVALID and ID pin in high + * impedance + * @ctrl_usb: struct omap_control_usb * + * + * Writes to the mailbox register to notify the usb core that it has been + * connected to a usb host. + */ +static void omap_control_usb_device_mode(struct omap_control_usb *ctrl_usb) +{ + u32 val; + + val = readl(ctrl_usb->otghs_control); + val &= ~OMAP_CTRL_DEV_SESSEND; + val |= OMAP_CTRL_DEV_IDDIG | OMAP_CTRL_DEV_AVALID | + OMAP_CTRL_DEV_VBUSVALID; + writel(val, ctrl_usb->otghs_control); +} + +/** + * omap_control_usb_set_sessionend - Enable SESSIONEND and IDIG to high + * impedance + * @ctrl_usb: struct omap_control_usb * + * + * Writes to the mailbox register to notify the usb core it's now in + * disconnected state. + */ +static void omap_control_usb_set_sessionend(struct omap_control_usb *ctrl_usb) +{ + u32 val; + + val = readl(ctrl_usb->otghs_control); + val &= ~(OMAP_CTRL_DEV_AVALID | OMAP_CTRL_DEV_VBUSVALID); + val |= OMAP_CTRL_DEV_IDDIG | OMAP_CTRL_DEV_SESSEND; + writel(val, ctrl_usb->otghs_control); +} + +/** + * omap_control_usb_set_mode - Calls to functions to set USB in one of host mode + * or device mode or to denote disconnected state + * @dev: the control module device + * @mode: The mode to which usb should be configured + * + * This is an API to write to the mailbox register to notify the usb core that + * a usb device has been connected. + */ +void omap_control_usb_set_mode(struct device *dev, + enum omap_control_usb_mode mode) +{ + struct omap_control_usb *ctrl_usb; + + if (IS_ERR(dev) || control_usb->type != OMAP_CTRL_DEV_TYPE1) + return; + + ctrl_usb = dev_get_drvdata(dev); + + switch (mode) { + case USB_MODE_HOST: + omap_control_usb_host_mode(ctrl_usb); + break; + case USB_MODE_DEVICE: + omap_control_usb_device_mode(ctrl_usb); + break; + case USB_MODE_DISCONNECT: + omap_control_usb_set_sessionend(ctrl_usb); + break; + default: + dev_vdbg(dev, "invalid omap control usb mode\n"); + } +} +EXPORT_SYMBOL_GPL(omap_control_usb_set_mode); + +static int omap_control_usb_probe(struct platform_device *pdev) +{ + struct resource *res; + struct device_node *np = pdev->dev.of_node; + struct omap_control_usb_platform_data *pdata = pdev->dev.platform_data; + + control_usb = devm_kzalloc(&pdev->dev, sizeof(*control_usb), + GFP_KERNEL); + if (!control_usb) { + dev_err(&pdev->dev, "unable to alloc memory for control usb\n"); + return -ENOMEM; + } + + if (np) { + of_property_read_u32(np, "ti,type", &control_usb->type); + } else if (pdata) { + control_usb->type = pdata->type; + } else { + dev_err(&pdev->dev, "no pdata present\n"); + return -EINVAL; + } + + control_usb->dev = &pdev->dev; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + "control_dev_conf"); + control_usb->dev_conf = devm_request_and_ioremap(&pdev->dev, res); + if (!control_usb->dev_conf) { + dev_err(&pdev->dev, "Failed to obtain io memory\n"); + return -EADDRNOTAVAIL; + } + + if (control_usb->type == OMAP_CTRL_DEV_TYPE1) { + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + "otghs_control"); + control_usb->otghs_control = devm_request_and_ioremap( + &pdev->dev, res); + if (!control_usb->otghs_control) { + dev_err(&pdev->dev, "Failed to obtain io memory\n"); + return -EADDRNOTAVAIL; + } + } + + if (control_usb->type == OMAP_CTRL_DEV_TYPE2) { + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + "phy_power_usb"); + control_usb->phy_power = devm_request_and_ioremap( + &pdev->dev, res); + if (!control_usb->phy_power) { + dev_dbg(&pdev->dev, "Failed to obtain io memory\n"); + return -EADDRNOTAVAIL; + } + + control_usb->sys_clk = devm_clk_get(control_usb->dev, + "sys_clkin"); + if (IS_ERR(control_usb->sys_clk)) { + pr_err("%s: unable to get sys_clkin\n", __func__); + return -EINVAL; + } + } + + + dev_set_drvdata(control_usb->dev, control_usb); + + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id omap_control_usb_id_table[] = { + { .compatible = "ti,omap-control-usb" }, + {} +}; +MODULE_DEVICE_TABLE(of, omap_control_usb_id_table); +#endif + +static struct platform_driver omap_control_usb_driver = { + .probe = omap_control_usb_probe, + .driver = { + .name = "omap-control-usb", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(omap_control_usb_id_table), + }, +}; + +static int __init omap_control_usb_init(void) +{ + return platform_driver_register(&omap_control_usb_driver); +} +subsys_initcall(omap_control_usb_init); + +static void __exit omap_control_usb_exit(void) +{ + platform_driver_unregister(&omap_control_usb_driver); +} +module_exit(omap_control_usb_exit); + +MODULE_ALIAS("platform: omap_control_usb"); +MODULE_AUTHOR("Texas Instruments Inc."); +MODULE_DESCRIPTION("OMAP Control Module USB Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/usb/omap_control_usb.h b/include/linux/usb/omap_control_usb.h new file mode 100644 index 000000000000..f306db7149ca --- /dev/null +++ b/include/linux/usb/omap_control_usb.h @@ -0,0 +1,92 @@ +/* + * omap_control_usb.h - Header file for the USB part of control module. + * + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Author: Kishon Vijay Abraham I + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __OMAP_CONTROL_USB_H__ +#define __OMAP_CONTROL_USB_H__ + +struct omap_control_usb { + struct device *dev; + + u32 __iomem *dev_conf; + u32 __iomem *otghs_control; + u32 __iomem *phy_power; + + struct clk *sys_clk; + + u32 type; +}; + +struct omap_control_usb_platform_data { + u8 type; +}; + +enum omap_control_usb_mode { + USB_MODE_UNDEFINED = 0, + USB_MODE_HOST, + USB_MODE_DEVICE, + USB_MODE_DISCONNECT, +}; + +/* To differentiate ctrl module IP having either mailbox or USB3 PHY power */ +#define OMAP_CTRL_DEV_TYPE1 0x1 +#define OMAP_CTRL_DEV_TYPE2 0x2 + +#define OMAP_CTRL_DEV_PHY_PD BIT(0) + +#define OMAP_CTRL_DEV_AVALID BIT(0) +#define OMAP_CTRL_DEV_BVALID BIT(1) +#define OMAP_CTRL_DEV_VBUSVALID BIT(2) +#define OMAP_CTRL_DEV_SESSEND BIT(3) +#define OMAP_CTRL_DEV_IDDIG BIT(4) + +#define OMAP_CTRL_USB_PWRCTL_CLK_CMD_MASK 0x003FC000 +#define OMAP_CTRL_USB_PWRCTL_CLK_CMD_SHIFT 0xE + +#define OMAP_CTRL_USB_PWRCTL_CLK_FREQ_MASK 0xFFC00000 +#define OMAP_CTRL_USB_PWRCTL_CLK_FREQ_SHIFT 0x16 + +#define OMAP_CTRL_USB3_PHY_TX_RX_POWERON 0x3 +#define OMAP_CTRL_USB3_PHY_TX_RX_POWEROFF 0x0 + +#if IS_ENABLED(CONFIG_OMAP_CONTROL_USB) +extern struct device *omap_get_control_dev(void); +extern void omap_control_usb_phy_power(struct device *dev, int on); +extern void omap_control_usb3_phy_power(struct device *dev, bool on); +extern void omap_control_usb_set_mode(struct device *dev, + enum omap_control_usb_mode mode); +#else +static inline struct device *omap_get_control_dev() +{ + return ERR_PTR(-ENODEV); +} + +static inline void omap_control_usb_phy_power(struct device *dev, int on) +{ +} + +static inline void omap_control_usb3_phy_power(struct device *dev, int on) +{ +} + +static inline void omap_control_usb_set_mode(struct device *dev, + enum omap_control_usb_mode mode) +{ +} +#endif + +#endif /* __OMAP_CONTROL_USB_H__ */ -- cgit v1.2.3 From ca784be36cc725bca9b526eba342de7550329731 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 15:54:00 +0530 Subject: usb: start using the control module driver Start using the control module driver for powering on the PHY and for writing to the mailbox instead of writing to the control module registers on their own. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- Documentation/devicetree/bindings/usb/omap-usb.txt | 4 ++ Documentation/devicetree/bindings/usb/usb-phy.txt | 7 +-- drivers/usb/musb/Kconfig | 1 + drivers/usb/musb/omap2430.c | 68 ++++++++-------------- drivers/usb/musb/omap2430.h | 9 --- drivers/usb/phy/Kconfig | 1 + drivers/usb/phy/omap-usb2.c | 41 +++---------- include/linux/usb/omap_usb.h | 4 +- 8 files changed, 40 insertions(+), 95 deletions(-) (limited to 'drivers') diff --git a/Documentation/devicetree/bindings/usb/omap-usb.txt b/Documentation/devicetree/bindings/usb/omap-usb.txt index 3d78cc2b486e..1ef0ce71f8fa 100644 --- a/Documentation/devicetree/bindings/usb/omap-usb.txt +++ b/Documentation/devicetree/bindings/usb/omap-usb.txt @@ -3,6 +3,9 @@ OMAP GLUE AND OTHER OMAP SPECIFIC COMPONENTS OMAP MUSB GLUE - compatible : Should be "ti,omap4-musb" or "ti,omap3-musb" - ti,hwmods : must be "usb_otg_hs" + - ti,has-mailbox : to specify that omap uses an external mailbox + (in control module) to communicate with the musb core during device connect + and disconnect. - multipoint : Should be "1" indicating the musb controller supports multipoint. This is a MUSB configuration-specific setting. - num_eps : Specifies the number of endpoints. This is also a @@ -24,6 +27,7 @@ SOC specific device node entry usb_otg_hs: usb_otg_hs@4a0ab000 { compatible = "ti,omap4-musb"; ti,hwmods = "usb_otg_hs"; + ti,has-mailbox; multipoint = <1>; num_eps = <16>; ram_bits = <12>; diff --git a/Documentation/devicetree/bindings/usb/usb-phy.txt b/Documentation/devicetree/bindings/usb/usb-phy.txt index 4234105302db..b4b86bb831b2 100644 --- a/Documentation/devicetree/bindings/usb/usb-phy.txt +++ b/Documentation/devicetree/bindings/usb/usb-phy.txt @@ -4,9 +4,7 @@ OMAP USB2 PHY Required properties: - compatible: Should be "ti,omap-usb2" - - reg : Address and length of the register set for the device. Also -add the address of control module dev conf register until a driver for -control module is added + - reg : Address and length of the register set for the device. Optional properties: - ctrl-module : phandle of the control module used by PHY driver to power on @@ -16,7 +14,6 @@ This is usually a subnode of ocp2scp to which it is connected. usb2phy@4a0ad080 { compatible = "ti,omap-usb2"; - reg = <0x4a0ad080 0x58>, - <0x4a002300 0x4>; + reg = <0x4a0ad080 0x58>; ctrl-module = <&omap_control_usb>; }; diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index 23a0b7f0892d..de6e5ce26316 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -11,6 +11,7 @@ config USB_MUSB_HDRC select NOP_USB_XCEIV if (SOC_TI81XX || SOC_AM33XX) select TWL4030_USB if MACH_OMAP_3430SDP select TWL6030_USB if MACH_OMAP_4430SDP || MACH_OMAP4_PANDA + select OMAP_CONTROL_USB if MACH_OMAP_4430SDP || MACH_OMAP4_PANDA select USB_OTG_UTILS help Say Y here if your system has a dual role high speed USB diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index da00af460794..779862d24590 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -37,6 +37,7 @@ #include #include #include +#include #include "musb_core.h" #include "omap2430.h" @@ -46,7 +47,7 @@ struct omap2430_glue { struct platform_device *musb; enum omap_musb_vbus_id_status status; struct work_struct omap_musb_mailbox_work; - u32 __iomem *control_otghs; + struct device *control_otghs; }; #define glue_to_musb(g) platform_get_drvdata(g->musb) @@ -54,26 +55,6 @@ struct omap2430_glue *_glue; static struct timer_list musb_idle_timer; -/** - * omap4_usb_phy_mailbox - write to usb otg mailbox - * @glue: struct omap2430_glue * - * @val: the value to be written to the mailbox - * - * On detection of a device (ID pin is grounded), this API should be called - * to set AVALID, VBUSVALID and ID pin is grounded. - * - * When OMAP is connected to a host (OMAP in device mode), this API - * is called to set AVALID, VBUSVALID and ID pin in high impedance. - * - * XXX: This function will be removed once we have a seperate driver for - * control module - */ -static void omap4_usb_phy_mailbox(struct omap2430_glue *glue, u32 val) -{ - if (glue->control_otghs) - writel(val, glue->control_otghs); -} - static void musb_do_idle(unsigned long _musb) { struct musb *musb = (void *)_musb; @@ -269,7 +250,6 @@ EXPORT_SYMBOL_GPL(omap_musb_mailbox); static void omap_musb_set_mailbox(struct omap2430_glue *glue) { - u32 val; struct musb *musb = glue_to_musb(glue); struct device *dev = musb->controller; struct musb_hdrc_platform_data *pdata = dev->platform_data; @@ -285,8 +265,8 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue) musb->xceiv->last_event = USB_EVENT_ID; if (musb->gadget_driver) { pm_runtime_get_sync(dev); - val = AVALID | VBUSVALID; - omap4_usb_phy_mailbox(glue, val); + omap_control_usb_set_mode(glue->control_otghs, + USB_MODE_HOST); omap2430_musb_set_vbus(musb, 1); } break; @@ -299,8 +279,7 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue) musb->xceiv->last_event = USB_EVENT_VBUS; if (musb->gadget_driver) pm_runtime_get_sync(dev); - val = IDDIG | AVALID | VBUSVALID; - omap4_usb_phy_mailbox(glue, val); + omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); break; case OMAP_MUSB_ID_FLOAT: @@ -317,8 +296,8 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue) if (musb->xceiv->otg->set_vbus) otg_set_vbus(musb->xceiv->otg, 0); } - val = SESSEND | IDDIG; - omap4_usb_phy_mailbox(glue, val); + omap_control_usb_set_mode(glue->control_otghs, + USB_MODE_DISCONNECT); break; default: dev_dbg(dev, "ID float\n"); @@ -415,7 +394,6 @@ err1: static void omap2430_musb_enable(struct musb *musb) { u8 devctl; - u32 val; unsigned long timeout = jiffies + msecs_to_jiffies(1000); struct device *dev = musb->controller; struct omap2430_glue *glue = dev_get_drvdata(dev->parent); @@ -425,8 +403,7 @@ static void omap2430_musb_enable(struct musb *musb) switch (glue->status) { case OMAP_MUSB_ID_GROUND: - val = AVALID | VBUSVALID; - omap4_usb_phy_mailbox(glue, val); + omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST); if (data->interface_type != MUSB_INTERFACE_UTMI) break; devctl = musb_readb(musb->mregs, MUSB_DEVCTL); @@ -445,8 +422,7 @@ static void omap2430_musb_enable(struct musb *musb) break; case OMAP_MUSB_VBUS_VALID: - val = IDDIG | AVALID | VBUSVALID; - omap4_usb_phy_mailbox(glue, val); + omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); break; default: @@ -456,14 +432,12 @@ static void omap2430_musb_enable(struct musb *musb) static void omap2430_musb_disable(struct musb *musb) { - u32 val; struct device *dev = musb->controller; struct omap2430_glue *glue = dev_get_drvdata(dev->parent); - if (glue->status != OMAP_MUSB_UNKNOWN) { - val = SESSEND | IDDIG; - omap4_usb_phy_mailbox(glue, val); - } + if (glue->status != OMAP_MUSB_UNKNOWN) + omap_control_usb_set_mode(glue->control_otghs, + USB_MODE_DISCONNECT); } static int omap2430_musb_exit(struct musb *musb) @@ -498,7 +472,6 @@ static int omap2430_probe(struct platform_device *pdev) struct omap2430_glue *glue; struct device_node *np = pdev->dev.of_node; struct musb_hdrc_config *config; - struct resource *res; int ret = -ENOMEM; glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); @@ -521,12 +494,6 @@ static int omap2430_probe(struct platform_device *pdev) glue->musb = musb; glue->status = OMAP_MUSB_UNKNOWN; - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - - glue->control_otghs = devm_request_and_ioremap(&pdev->dev, res); - if (glue->control_otghs == NULL) - dev_dbg(&pdev->dev, "Failed to obtain control memory\n"); - if (np) { pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) { @@ -558,11 +525,22 @@ static int omap2430_probe(struct platform_device *pdev) of_property_read_u32(np, "ram_bits", (u32 *)&config->ram_bits); of_property_read_u32(np, "power", (u32 *)&pdata->power); config->multipoint = of_property_read_bool(np, "multipoint"); + pdata->has_mailbox = of_property_read_bool(np, + "ti,has-mailbox"); pdata->board_data = data; pdata->config = config; } + if (pdata->has_mailbox) { + glue->control_otghs = omap_get_control_dev(); + if (IS_ERR(glue->control_otghs)) { + dev_vdbg(&pdev->dev, "Failed to get control device\n"); + return -ENODEV; + } + } else { + glue->control_otghs = ERR_PTR(-ENODEV); + } pdata->platform_ops = &omap2430_ops; platform_set_drvdata(pdev, glue); diff --git a/drivers/usb/musb/omap2430.h b/drivers/usb/musb/omap2430.h index 8ef656659fcb..1b5e83a9840e 100644 --- a/drivers/usb/musb/omap2430.h +++ b/drivers/usb/musb/omap2430.h @@ -49,13 +49,4 @@ #define OTG_FORCESTDBY 0x414 # define ENABLEFORCE (1 << 0) -/* - * Control Module bit definitions - * XXX: Will be removed once we have a driver for control module. - */ -#define AVALID BIT(0) -#define BVALID BIT(1) -#define VBUSVALID BIT(2) -#define SESSEND BIT(3) -#define IDDIG BIT(4) #endif /* __MUSB_OMAP243X_H__ */ diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 053696a2b6ef..f989511f13da 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -8,6 +8,7 @@ config OMAP_USB2 tristate "OMAP USB2 PHY Driver" depends on ARCH_OMAP2PLUS select USB_OTG_UTILS + select OMAP_CONTROL_USB help Enable this to support the transceiver that is part of SOC. This driver takes care of all the PHY functionality apart from comparator. diff --git a/drivers/usb/phy/omap-usb2.c b/drivers/usb/phy/omap-usb2.c index 26ae8f49225c..c2b4c8e6f3c6 100644 --- a/drivers/usb/phy/omap-usb2.c +++ b/drivers/usb/phy/omap-usb2.c @@ -27,6 +27,7 @@ #include #include #include +#include /** * omap_usb2_set_comparator - links the comparator present in the sytem with @@ -52,29 +53,6 @@ int omap_usb2_set_comparator(struct phy_companion *comparator) } EXPORT_SYMBOL_GPL(omap_usb2_set_comparator); -/** - * omap_usb_phy_power - power on/off the phy using control module reg - * @phy: struct omap_usb * - * @on: 0 or 1, based on powering on or off the PHY - * - * XXX: Remove this function once control module driver gets merged - */ -static void omap_usb_phy_power(struct omap_usb *phy, int on) -{ - u32 val; - - if (on) { - val = readl(phy->control_dev); - if (val & PHY_PD) { - writel(~PHY_PD, phy->control_dev); - /* XXX: add proper documentation for this delay */ - mdelay(200); - } - } else { - writel(PHY_PD, phy->control_dev); - } -} - static int omap_usb_set_vbus(struct usb_otg *otg, bool enabled) { struct omap_usb *phy = phy_to_omapusb(otg->phy); @@ -124,7 +102,7 @@ static int omap_usb2_suspend(struct usb_phy *x, int suspend) struct omap_usb *phy = phy_to_omapusb(x); if (suspend && !phy->is_suspended) { - omap_usb_phy_power(phy, 0); + omap_control_usb_phy_power(phy->control_dev, 0); pm_runtime_put_sync(phy->dev); phy->is_suspended = 1; } else if (!suspend && phy->is_suspended) { @@ -134,7 +112,7 @@ static int omap_usb2_suspend(struct usb_phy *x, int suspend) ret); return ret; } - omap_usb_phy_power(phy, 1); + omap_control_usb_phy_power(phy->control_dev, 1); phy->is_suspended = 0; } @@ -145,7 +123,6 @@ static int omap_usb2_probe(struct platform_device *pdev) { struct omap_usb *phy; struct usb_otg *otg; - struct resource *res; phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL); if (!phy) { @@ -166,16 +143,14 @@ static int omap_usb2_probe(struct platform_device *pdev) phy->phy.set_suspend = omap_usb2_suspend; phy->phy.otg = otg; - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - - phy->control_dev = devm_request_and_ioremap(&pdev->dev, res); - if (phy->control_dev == NULL) { - dev_err(&pdev->dev, "Failed to obtain io memory\n"); - return -ENXIO; + phy->control_dev = omap_get_control_dev(); + if (IS_ERR(phy->control_dev)) { + dev_dbg(&pdev->dev, "Failed to get control device\n"); + return -ENODEV; } phy->is_suspended = 1; - omap_usb_phy_power(phy, 0); + omap_control_usb_phy_power(phy->control_dev, 0); otg->set_host = omap_usb_set_host; otg->set_peripheral = omap_usb_set_peripheral; diff --git a/include/linux/usb/omap_usb.h b/include/linux/usb/omap_usb.h index 0ea17f8ae820..3db9b5316b10 100644 --- a/include/linux/usb/omap_usb.h +++ b/include/linux/usb/omap_usb.h @@ -25,13 +25,11 @@ struct omap_usb { struct usb_phy phy; struct phy_companion *comparator; struct device *dev; - u32 __iomem *control_dev; + struct device *control_dev; struct clk *wkupclk; u8 is_suspended:1; }; -#define PHY_PD 0x1 - #define phy_to_omapusb(x) container_of((x), struct omap_usb, phy) #if defined(CONFIG_OMAP_USB2) || defined(CONFIG_OMAP_USB2_MODULE) -- cgit v1.2.3 From 57f6ce072e35770a63be0c5d5e82f90d8da7d665 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:21:48 +0530 Subject: usb: phy: add a new driver for usb3 phy Added a driver for usb3 phy that handles the interaction between usb phy device and dwc3 controller. This also includes device tree support for usb3 phy driver and the documentation with device tree binding information is updated. Currently writing to control module register is taken care in this driver which will be removed once the control module driver is in place. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi Signed-off-by: Moiz Sonasath Signed-off-by: Felipe Balbi --- Documentation/devicetree/bindings/usb/usb-phy.txt | 23 ++ drivers/usb/phy/Kconfig | 10 + drivers/usb/phy/Makefile | 1 + drivers/usb/phy/omap-usb3.c | 355 ++++++++++++++++++++++ include/linux/usb/omap_usb.h | 23 ++ 5 files changed, 412 insertions(+) create mode 100644 drivers/usb/phy/omap-usb3.c (limited to 'drivers') diff --git a/Documentation/devicetree/bindings/usb/usb-phy.txt b/Documentation/devicetree/bindings/usb/usb-phy.txt index b4b86bb831b2..61496f5cb095 100644 --- a/Documentation/devicetree/bindings/usb/usb-phy.txt +++ b/Documentation/devicetree/bindings/usb/usb-phy.txt @@ -17,3 +17,26 @@ usb2phy@4a0ad080 { reg = <0x4a0ad080 0x58>; ctrl-module = <&omap_control_usb>; }; + +OMAP USB3 PHY + +Required properties: + - compatible: Should be "ti,omap-usb3" + - reg : Address and length of the register set for the device. + - reg-names: The names of the register addresses corresponding to the registers + filled in "reg". + +Optional properties: + - ctrl-module : phandle of the control module used by PHY driver to power on + the PHY. + +This is usually a subnode of ocp2scp to which it is connected. + +usb3phy@4a084400 { + compatible = "ti,omap-usb3"; + reg = <0x4a084400 0x80>, + <0x4a084800 0x64>, + <0x4a084c00 0x40>; + reg-names = "phy_rx", "phy_tx", "pll_ctrl"; + ctrl-module = <&omap_control_usb>; +}; diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index f989511f13da..9bbedecb3371 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -15,6 +15,16 @@ config OMAP_USB2 The USB OTG controller communicates with the comparator using this driver. +config OMAP_USB3 + tristate "OMAP USB3 PHY Driver" + select USB_OTG_UTILS + select OMAP_CONTROL_USB + help + Enable this to support the USB3 PHY that is part of SOC. This + driver takes care of all the PHY functionality apart from comparator. + This driver interacts with the "OMAP Control USB Driver" to power + on/off the PHY. + config OMAP_CONTROL_USB tristate "OMAP CONTROL USB Driver" depends on ARCH_OMAP2PLUS diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index ee977671f530..b13faa193e0c 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -5,6 +5,7 @@ ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG obj-$(CONFIG_OMAP_USB2) += omap-usb2.o +obj-$(CONFIG_OMAP_USB3) += omap-usb3.o obj-$(CONFIG_OMAP_CONTROL_USB) += omap-control-usb.o obj-$(CONFIG_USB_ISP1301) += isp1301.o obj-$(CONFIG_MV_U3D_PHY) += mv_u3d_phy.o diff --git a/drivers/usb/phy/omap-usb3.c b/drivers/usb/phy/omap-usb3.c new file mode 100644 index 000000000000..fadc0c2b65bb --- /dev/null +++ b/drivers/usb/phy/omap-usb3.c @@ -0,0 +1,355 @@ +/* + * omap-usb3 - USB PHY, talking to dwc3 controller in OMAP. + * + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Author: Kishon Vijay Abraham I + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define NUM_SYS_CLKS 5 +#define PLL_STATUS 0x00000004 +#define PLL_GO 0x00000008 +#define PLL_CONFIGURATION1 0x0000000C +#define PLL_CONFIGURATION2 0x00000010 +#define PLL_CONFIGURATION3 0x00000014 +#define PLL_CONFIGURATION4 0x00000020 + +#define PLL_REGM_MASK 0x001FFE00 +#define PLL_REGM_SHIFT 0x9 +#define PLL_REGM_F_MASK 0x0003FFFF +#define PLL_REGM_F_SHIFT 0x0 +#define PLL_REGN_MASK 0x000001FE +#define PLL_REGN_SHIFT 0x1 +#define PLL_SELFREQDCO_MASK 0x0000000E +#define PLL_SELFREQDCO_SHIFT 0x1 +#define PLL_SD_MASK 0x0003FC00 +#define PLL_SD_SHIFT 0x9 +#define SET_PLL_GO 0x1 +#define PLL_TICOPWDN 0x10000 +#define PLL_LOCK 0x2 +#define PLL_IDLE 0x1 + +/* + * This is an Empirical value that works, need to confirm the actual + * value required for the USB3PHY_PLL_CONFIGURATION2.PLL_IDLE status + * to be correctly reflected in the USB3PHY_PLL_STATUS register. + */ +# define PLL_IDLE_TIME 100; + +enum sys_clk_rate { + CLK_RATE_UNDEFINED = -1, + CLK_RATE_12MHZ, + CLK_RATE_16MHZ, + CLK_RATE_19MHZ, + CLK_RATE_26MHZ, + CLK_RATE_38MHZ +}; + +static struct usb_dpll_params omap_usb3_dpll_params[NUM_SYS_CLKS] = { + {1250, 5, 4, 20, 0}, /* 12 MHz */ + {3125, 20, 4, 20, 0}, /* 16.8 MHz */ + {1172, 8, 4, 20, 65537}, /* 19.2 MHz */ + {1250, 12, 4, 20, 0}, /* 26 MHz */ + {3125, 47, 4, 20, 92843}, /* 38.4 MHz */ +}; + +static int omap_usb3_suspend(struct usb_phy *x, int suspend) +{ + struct omap_usb *phy = phy_to_omapusb(x); + int val; + int timeout = PLL_IDLE_TIME; + + if (suspend && !phy->is_suspended) { + val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val |= PLL_IDLE; + omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + + do { + val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS); + if (val & PLL_TICOPWDN) + break; + udelay(1); + } while (--timeout); + + omap_control_usb3_phy_power(phy->control_dev, 0); + + phy->is_suspended = 1; + } else if (!suspend && phy->is_suspended) { + phy->is_suspended = 0; + + val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val &= ~PLL_IDLE; + omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + + do { + val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS); + if (!(val & PLL_TICOPWDN)) + break; + udelay(1); + } while (--timeout); + } + + return 0; +} + +static inline enum sys_clk_rate __get_sys_clk_index(unsigned long rate) +{ + switch (rate) { + case 12000000: + return CLK_RATE_12MHZ; + case 16800000: + return CLK_RATE_16MHZ; + case 19200000: + return CLK_RATE_19MHZ; + case 26000000: + return CLK_RATE_26MHZ; + case 38400000: + return CLK_RATE_38MHZ; + default: + return CLK_RATE_UNDEFINED; + } +} + +static void omap_usb_dpll_relock(struct omap_usb *phy) +{ + u32 val; + unsigned long timeout; + + omap_usb_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO); + + timeout = jiffies + msecs_to_jiffies(20); + do { + val = omap_usb_readl(phy->pll_ctrl_base, PLL_STATUS); + if (val & PLL_LOCK) + break; + } while (!WARN_ON(time_after(jiffies, timeout))); +} + +static int omap_usb_dpll_lock(struct omap_usb *phy) +{ + u32 val; + unsigned long rate; + enum sys_clk_rate clk_index; + + rate = clk_get_rate(phy->sys_clk); + clk_index = __get_sys_clk_index(rate); + + if (clk_index == CLK_RATE_UNDEFINED) { + pr_err("dpll cannot be locked for sys clk freq:%luHz\n", rate); + return -EINVAL; + } + + val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); + val &= ~PLL_REGN_MASK; + val |= omap_usb3_dpll_params[clk_index].n << PLL_REGN_SHIFT; + omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); + + val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2); + val &= ~PLL_SELFREQDCO_MASK; + val |= omap_usb3_dpll_params[clk_index].freq << PLL_SELFREQDCO_SHIFT; + omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val); + + val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1); + val &= ~PLL_REGM_MASK; + val |= omap_usb3_dpll_params[clk_index].m << PLL_REGM_SHIFT; + omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val); + + val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4); + val &= ~PLL_REGM_F_MASK; + val |= omap_usb3_dpll_params[clk_index].mf << PLL_REGM_F_SHIFT; + omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val); + + val = omap_usb_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3); + val &= ~PLL_SD_MASK; + val |= omap_usb3_dpll_params[clk_index].sd << PLL_SD_SHIFT; + omap_usb_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val); + + omap_usb_dpll_relock(phy); + + return 0; +} + +static int omap_usb3_init(struct usb_phy *x) +{ + struct omap_usb *phy = phy_to_omapusb(x); + + omap_usb_dpll_lock(phy); + omap_control_usb3_phy_power(phy->control_dev, 1); + + return 0; +} + +static int omap_usb3_probe(struct platform_device *pdev) +{ + struct omap_usb *phy; + struct resource *res; + + phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL); + if (!phy) { + dev_err(&pdev->dev, "unable to alloc mem for OMAP USB3 PHY\n"); + return -ENOMEM; + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll_ctrl"); + phy->pll_ctrl_base = devm_request_and_ioremap(&pdev->dev, res); + if (!phy->pll_ctrl_base) { + dev_err(&pdev->dev, "ioremap of pll_ctrl failed\n"); + return -ENOMEM; + } + + phy->dev = &pdev->dev; + + phy->phy.dev = phy->dev; + phy->phy.label = "omap-usb3"; + phy->phy.init = omap_usb3_init; + phy->phy.set_suspend = omap_usb3_suspend; + phy->phy.type = USB_PHY_TYPE_USB3; + + phy->is_suspended = 1; + phy->wkupclk = devm_clk_get(phy->dev, "usb_phy_cm_clk32k"); + if (IS_ERR(phy->wkupclk)) { + dev_err(&pdev->dev, "unable to get usb_phy_cm_clk32k\n"); + return PTR_ERR(phy->wkupclk); + } + clk_prepare(phy->wkupclk); + + phy->optclk = devm_clk_get(phy->dev, "usb_otg_ss_refclk960m"); + if (IS_ERR(phy->optclk)) { + dev_err(&pdev->dev, "unable to get usb_otg_ss_refclk960m\n"); + return PTR_ERR(phy->optclk); + } + clk_prepare(phy->optclk); + + phy->sys_clk = devm_clk_get(phy->dev, "sys_clkin"); + if (IS_ERR(phy->sys_clk)) { + pr_err("%s: unable to get sys_clkin\n", __func__); + return -EINVAL; + } + + phy->control_dev = omap_get_control_dev(); + if (IS_ERR(phy->control_dev)) { + dev_dbg(&pdev->dev, "Failed to get control device\n"); + return -ENODEV; + } + + omap_control_usb3_phy_power(phy->control_dev, 0); + usb_add_phy_dev(&phy->phy); + + platform_set_drvdata(pdev, phy); + + pm_runtime_enable(phy->dev); + pm_runtime_get(&pdev->dev); + + return 0; +} + +static int omap_usb3_remove(struct platform_device *pdev) +{ + struct omap_usb *phy = platform_get_drvdata(pdev); + + clk_unprepare(phy->wkupclk); + clk_unprepare(phy->optclk); + usb_remove_phy(&phy->phy); + if (!pm_runtime_suspended(&pdev->dev)) + pm_runtime_put(&pdev->dev); + pm_runtime_disable(&pdev->dev); + + return 0; +} + +#ifdef CONFIG_PM_RUNTIME + +static int omap_usb3_runtime_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct omap_usb *phy = platform_get_drvdata(pdev); + + clk_disable(phy->wkupclk); + clk_disable(phy->optclk); + + return 0; +} + +static int omap_usb3_runtime_resume(struct device *dev) +{ + u32 ret = 0; + struct platform_device *pdev = to_platform_device(dev); + struct omap_usb *phy = platform_get_drvdata(pdev); + + ret = clk_enable(phy->optclk); + if (ret) { + dev_err(phy->dev, "Failed to enable optclk %d\n", ret); + goto err1; + } + + ret = clk_enable(phy->wkupclk); + if (ret) { + dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret); + goto err2; + } + + return 0; + +err2: + clk_disable(phy->optclk); + +err1: + return ret; +} + +static const struct dev_pm_ops omap_usb3_pm_ops = { + SET_RUNTIME_PM_OPS(omap_usb3_runtime_suspend, omap_usb3_runtime_resume, + NULL) +}; + +#define DEV_PM_OPS (&omap_usb3_pm_ops) +#else +#define DEV_PM_OPS NULL +#endif + +#ifdef CONFIG_OF +static const struct of_device_id omap_usb3_id_table[] = { + { .compatible = "ti,omap-usb3" }, + {} +}; +MODULE_DEVICE_TABLE(of, omap_usb3_id_table); +#endif + +static struct platform_driver omap_usb3_driver = { + .probe = omap_usb3_probe, + .remove = omap_usb3_remove, + .driver = { + .name = "omap-usb3", + .owner = THIS_MODULE, + .pm = DEV_PM_OPS, + .of_match_table = of_match_ptr(omap_usb3_id_table), + }, +}; + +module_platform_driver(omap_usb3_driver); + +MODULE_ALIAS("platform: omap_usb3"); +MODULE_AUTHOR("Texas Instruments Inc."); +MODULE_DESCRIPTION("OMAP USB3 phy driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/usb/omap_usb.h b/include/linux/usb/omap_usb.h index 3db9b5316b10..6ae29360e1d2 100644 --- a/include/linux/usb/omap_usb.h +++ b/include/linux/usb/omap_usb.h @@ -19,14 +19,26 @@ #ifndef __DRIVERS_OMAP_USB2_H #define __DRIVERS_OMAP_USB2_H +#include #include +struct usb_dpll_params { + u16 m; + u8 n; + u8 freq:3; + u8 sd; + u32 mf; +}; + struct omap_usb { struct usb_phy phy; struct phy_companion *comparator; + void __iomem *pll_ctrl_base; struct device *dev; struct device *control_dev; struct clk *wkupclk; + struct clk *sys_clk; + struct clk *optclk; u8 is_suspended:1; }; @@ -41,4 +53,15 @@ static inline int omap_usb2_set_comparator(struct phy_companion *comparator) } #endif +static inline u32 omap_usb_readl(void __iomem *addr, unsigned offset) +{ + return __raw_readl(addr + offset); +} + +static inline void omap_usb_writel(void __iomem *addr, unsigned offset, + u32 data) +{ + __raw_writel(data, addr + offset); +} + #endif /* __DRIVERS_OMAP_USB_H */ -- cgit v1.2.3 From c11747f6ce70253dbf73709bb0a5ff19acc48ec8 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:03:24 +0530 Subject: usb: musb: omap: make use of the new PHY lib APIs New PHY lib APIs like usb_add_phy_dev() and devm_usb_get_phy_dev() are used in MUSB (OMAP), in order to make use of the binding information provided in the board file (of OMAP platforms). All the platforms should be modified similar to this to add and get the PHY. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 2 +- drivers/usb/otg/twl4030-usb.c | 3 ++- drivers/usb/phy/omap-usb2.c | 3 ++- 3 files changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 779862d24590..23df9d7c99f6 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -345,7 +345,7 @@ static int omap2430_musb_init(struct musb *musb) * up through ULPI. TWL4030-family PMICs include one, * which needs a driver, drivers aren't always needed. */ - musb->xceiv = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + musb->xceiv = devm_usb_get_phy_dev(dev, 0); if (IS_ERR_OR_NULL(musb->xceiv)) { pr_err("HS USB OTG: no transceiver configured\n"); return -ENODEV; diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index 0a701938ab53..a994715a3101 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -610,6 +610,7 @@ static int twl4030_usb_probe(struct platform_device *pdev) twl->phy.dev = twl->dev; twl->phy.label = "twl4030"; twl->phy.otg = otg; + twl->phy.type = USB_PHY_TYPE_USB2; twl->phy.set_suspend = twl4030_set_suspend; otg->phy = &twl->phy; @@ -624,7 +625,7 @@ static int twl4030_usb_probe(struct platform_device *pdev) dev_err(&pdev->dev, "ldo init failed\n"); return err; } - usb_add_phy(&twl->phy, USB_PHY_TYPE_USB2); + usb_add_phy_dev(&twl->phy); platform_set_drvdata(pdev, twl); if (device_create_file(&pdev->dev, &dev_attr_vbus)) diff --git a/drivers/usb/phy/omap-usb2.c b/drivers/usb/phy/omap-usb2.c index c2b4c8e6f3c6..0cd88ac0e095 100644 --- a/drivers/usb/phy/omap-usb2.c +++ b/drivers/usb/phy/omap-usb2.c @@ -142,6 +142,7 @@ static int omap_usb2_probe(struct platform_device *pdev) phy->phy.label = "omap-usb2"; phy->phy.set_suspend = omap_usb2_suspend; phy->phy.otg = otg; + phy->phy.type = USB_PHY_TYPE_USB2; phy->control_dev = omap_get_control_dev(); if (IS_ERR(phy->control_dev)) { @@ -165,7 +166,7 @@ static int omap_usb2_probe(struct platform_device *pdev) } clk_prepare(phy->wkupclk); - usb_add_phy(&phy->phy, USB_PHY_TYPE_USB2); + usb_add_phy_dev(&phy->phy); platform_set_drvdata(pdev, phy); -- cgit v1.2.3 From b16604f2c1dc3f0a326818b282e6bb5f363f725e Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:03:26 +0530 Subject: usb: musb: omap: get phy by phandle for dt boot The OMAP glue has been modified to get PHY by phandle for dt boot. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 23df9d7c99f6..d100360eab7a 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -345,7 +345,12 @@ static int omap2430_musb_init(struct musb *musb) * up through ULPI. TWL4030-family PMICs include one, * which needs a driver, drivers aren't always needed. */ - musb->xceiv = devm_usb_get_phy_dev(dev, 0); + if (dev->parent->of_node) + musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, + "usb-phy", 0); + else + musb->xceiv = devm_usb_get_phy_dev(dev, 0); + if (IS_ERR_OR_NULL(musb->xceiv)) { pr_err("HS USB OTG: no transceiver configured\n"); return -ENODEV; -- cgit v1.2.3 From 0c4c8bbbfdfc61c2ab2cc1026b5a05ae52396c93 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 08:21:49 +0530 Subject: usb: phy: omap-usb2: enable 960Mhz clock for omap5 "usb_otg_ss_refclk960m" is needed for usb2 phy present in omap5. For omap4, the clk_get of this clock will fail since it does not have this clock. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/phy/omap-usb2.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/phy/omap-usb2.c b/drivers/usb/phy/omap-usb2.c index 0cd88ac0e095..844ab68f08d0 100644 --- a/drivers/usb/phy/omap-usb2.c +++ b/drivers/usb/phy/omap-usb2.c @@ -166,6 +166,12 @@ static int omap_usb2_probe(struct platform_device *pdev) } clk_prepare(phy->wkupclk); + phy->optclk = devm_clk_get(phy->dev, "usb_otg_ss_refclk960m"); + if (IS_ERR(phy->optclk)) + dev_vdbg(&pdev->dev, "unable to get refclk960m\n"); + else + clk_prepare(phy->optclk); + usb_add_phy_dev(&phy->phy); platform_set_drvdata(pdev, phy); @@ -180,6 +186,8 @@ static int omap_usb2_remove(struct platform_device *pdev) struct omap_usb *phy = platform_get_drvdata(pdev); clk_unprepare(phy->wkupclk); + if (!IS_ERR(phy->optclk)) + clk_unprepare(phy->optclk); usb_remove_phy(&phy->phy); return 0; @@ -193,6 +201,8 @@ static int omap_usb2_runtime_suspend(struct device *dev) struct omap_usb *phy = platform_get_drvdata(pdev); clk_disable(phy->wkupclk); + if (!IS_ERR(phy->optclk)) + clk_disable(phy->optclk); return 0; } @@ -204,9 +214,25 @@ static int omap_usb2_runtime_resume(struct device *dev) struct omap_usb *phy = platform_get_drvdata(pdev); ret = clk_enable(phy->wkupclk); - if (ret < 0) + if (ret < 0) { dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret); + goto err0; + } + + if (!IS_ERR(phy->optclk)) { + ret = clk_enable(phy->optclk); + if (ret < 0) { + dev_err(phy->dev, "Failed to enable optclk %d\n", ret); + goto err1; + } + } + + return 0; + +err1: + clk_disable(phy->wkupclk); +err0: return ret; } -- cgit v1.2.3 From 5088b6f5bcf1747345ef9fe217fc80935b1b07df Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 25 Jan 2013 16:36:53 +0530 Subject: usb: dwc3: core: add dt support for dwc3 core Added dt support for dwc3 core and update the documentation with device tree binding information. Getting a PHY is now done using devm_usb_get_phy_by_phandle() for dt boot. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- Documentation/devicetree/bindings/usb/dwc3.txt | 22 ++++++++++++++++++++++ drivers/usb/dwc3/core.c | 24 ++++++++++++++++++++---- 2 files changed, 42 insertions(+), 4 deletions(-) create mode 100644 Documentation/devicetree/bindings/usb/dwc3.txt (limited to 'drivers') diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt new file mode 100644 index 000000000000..7a95c651ceb3 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/dwc3.txt @@ -0,0 +1,22 @@ +synopsys DWC3 CORE + +DWC3- USB3 CONTROLLER + +Required properties: + - compatible: must be "synopsys,dwc3" + - reg : Address and length of the register set for the device + - interrupts: Interrupts used by the dwc3 controller. + - usb-phy : array of phandle for the PHY device + +Optional properties: + - tx-fifo-resize: determines if the FIFO *has* to be reallocated. + +This is usually a subnode to DWC3 glue to which it is connected. + +dwc3@4a030000 { + compatible = "synopsys,dwc3"; + reg = <0x4a030000 0xcfff>; + interrupts = <0 92 4> + usb-phy = <&usb2_phy>, <&usb3,phy>; + tx-fifo-resize; +}; diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 3a4004a620ad..804402510dea 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -420,13 +420,19 @@ static int dwc3_probe(struct platform_device *pdev) return -ENOMEM; } - dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + if (node) { + dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0); + dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1); + } else { + dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); + } + if (IS_ERR_OR_NULL(dwc->usb2_phy)) { dev_err(dev, "no usb2 phy configured\n"); return -EPROBE_DEFER; } - dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3); if (IS_ERR_OR_NULL(dwc->usb3_phy)) { dev_err(dev, "no usb3 phy configured\n"); return -EPROBE_DEFER; @@ -450,8 +456,7 @@ static int dwc3_probe(struct platform_device *pdev) else dwc->maximum_speed = DWC3_DCFG_SUPERSPEED; - if (of_get_property(node, "tx-fifo-resize", NULL)) - dwc->needs_fifo_resize = true; + dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize"); pm_runtime_enable(dev); pm_runtime_get_sync(dev); @@ -580,11 +585,22 @@ static int dwc3_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_OF +static const struct of_device_id of_dwc3_match[] = { + { + .compatible = "synopsys,dwc3" + }, + { }, +}; +MODULE_DEVICE_TABLE(of, of_dwc3_match); +#endif + static struct platform_driver dwc3_driver = { .probe = dwc3_probe, .remove = dwc3_remove, .driver = { .name = "dwc3", + .of_match_table = of_match_ptr(of_dwc3_match), }, }; -- cgit v1.2.3 From b0e45ddb96d5a972a8b76354f036b90549ae85b3 Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Fri, 25 Jan 2013 16:52:01 +0530 Subject: usb: dwc3: exynos/omap: Change platform device IDs for no_op_xceive to AUTO Multiple dwc3 probe calls try to allocate no_op_xceive platform device. Having static IDs for these will throw sysfs error -EEXIST. Changing these static platform device IDs to AUTO to enable multiple dwc3 controller support on a SoC. Signed-off-by: Vivek Gautam Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-exynos.c | 4 ++-- drivers/usb/dwc3/dwc3-omap.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index 1e955517c6fa..b50da53e9a52 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -42,7 +42,7 @@ static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos) memset(&pdata, 0x00, sizeof(pdata)); - pdev = platform_device_alloc("nop_usb_xceiv", 0); + pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO); if (!pdev) return -ENOMEM; @@ -53,7 +53,7 @@ static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos) if (ret) goto err1; - pdev = platform_device_alloc("nop_usb_xceiv", 1); + pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO); if (!pdev) { ret = -ENOMEM; goto err1; diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 831b75fa4386..22f337f57219 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -203,7 +203,7 @@ static int dwc3_omap_register_phys(struct dwc3_omap *omap) memset(&pdata, 0x00, sizeof(pdata)); - pdev = platform_device_alloc("nop_usb_xceiv", 0); + pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO); if (!pdev) return -ENOMEM; @@ -214,7 +214,7 @@ static int dwc3_omap_register_phys(struct dwc3_omap *omap) if (ret) goto err1; - pdev = platform_device_alloc("nop_usb_xceiv", 1); + pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO); if (!pdev) { ret = -ENOMEM; goto err1; -- cgit v1.2.3 From 52758bcb7c12bede2a81849dee13f1edcd44e1c1 Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Fri, 25 Jan 2013 16:52:02 +0530 Subject: usb: dwc3: host: Change platform device ID for xhci-hcd to AUTO Multiple dwc3 controllers will try to allocate multiple xhci-hcd interfaces. Changing platform device IDs from NONE to AUTO to support such cases. Signed-off-by: Vivek Gautam Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c index 56a62342884d..0fa1846eda4c 100644 --- a/drivers/usb/dwc3/host.c +++ b/drivers/usb/dwc3/host.c @@ -44,7 +44,7 @@ int dwc3_host_init(struct dwc3 *dwc) struct platform_device *xhci; int ret; - xhci = platform_device_alloc("xhci-hcd", -1); + xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO); if (!xhci) { dev_err(dwc->dev, "couldn't allocate xHCI device\n"); ret = -ENOMEM; -- cgit v1.2.3 From 8ab03dd48a549f140597a55a1564083b171d1349 Mon Sep 17 00:00:00 2001 From: Dongjin Kim Date: Sat, 26 Jan 2013 01:53:03 +0900 Subject: USB: misc: usb3503: Fix compiler warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch fixes the compiler warning of uninitialized variable. drivers/usb/misc/usb3503.c: In function ‘usb3503_probe’: drivers/usb/misc/usb3503.c:215:13: warning: ‘mode’ may be used uninitialized in this function [-Wuninitialized] Signed-off-by: Dongjin Kim Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usb3503.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index 471218aea7b3..f713f6aeb6e5 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -185,7 +185,7 @@ static int usb3503_probe(struct i2c_client *i2c, const struct i2c_device_id *id) struct device_node *np = i2c->dev.of_node; struct usb3503 *hub; int err = -ENOMEM; - u32 mode; + u32 mode = USB3503_MODE_UNKNOWN; hub = kzalloc(sizeof(struct usb3503), GFP_KERNEL); if (!hub) { -- cgit v1.2.3 From 59e931c47fe44de354ced20136a655d4725a2b61 Mon Sep 17 00:00:00 2001 From: Frans Klaver Date: Fri, 25 Jan 2013 17:05:44 +0100 Subject: usb: add driver for xsens motion trackers Signed-off-by: Frans Klaver Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/Kconfig | 12 ++++++ drivers/usb/serial/Makefile | 1 + drivers/usb/serial/xsens_mt.c | 86 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 99 insertions(+) create mode 100644 drivers/usb/serial/xsens_mt.c (limited to 'drivers') diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index 76f462241738..dad8363e5b2a 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig @@ -647,6 +647,18 @@ config USB_SERIAL_VIVOPAY_SERIAL To compile this driver as a module, choose M here: the module will be called vivopay-serial. +config USB_SERIAL_XSENS_MT + tristate "Xsens motion tracker serial interface driver" + help + Say Y here if you want to use Xsens motion trackers. + + This driver supports the new generation of motion trackers + by Xsens. Older devices can be accessed using the FTDI_SIO + driver. + + To compile this driver as a module, choose M here: the + module will be called xsens_mt. + config USB_SERIAL_ZIO tristate "ZIO Motherboard USB serial interface driver" help diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile index 3b3e7308d476..eaf5ca14dfeb 100644 --- a/drivers/usb/serial/Makefile +++ b/drivers/usb/serial/Makefile @@ -61,5 +61,6 @@ obj-$(CONFIG_USB_SERIAL_VISOR) += visor.o obj-$(CONFIG_USB_SERIAL_WHITEHEAT) += whiteheat.o obj-$(CONFIG_USB_SERIAL_XIRCOM) += keyspan_pda.o obj-$(CONFIG_USB_SERIAL_VIVOPAY_SERIAL) += vivopay-serial.o +obj-$(CONFIG_USB_SERIAL_XSENS_MT) += xsens_mt.o obj-$(CONFIG_USB_SERIAL_ZIO) += zio.o obj-$(CONFIG_USB_SERIAL_ZTE) += zte_ev.o diff --git a/drivers/usb/serial/xsens_mt.c b/drivers/usb/serial/xsens_mt.c new file mode 100644 index 000000000000..1d5798d891bc --- /dev/null +++ b/drivers/usb/serial/xsens_mt.c @@ -0,0 +1,86 @@ +/* + * Xsens MT USB driver + * + * Copyright (C) 2013 Xsens + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include + +#define XSENS_VID 0x2639 + +#define MTi_10_IMU_PID 0x0001 +#define MTi_20_VRU_PID 0x0002 +#define MTi_30_AHRS_PID 0x0003 + +#define MTi_100_IMU_PID 0x0011 +#define MTi_200_VRU_PID 0x0012 +#define MTi_300_AHRS_PID 0x0013 + +#define MTi_G_700_GPS_INS_PID 0x0017 + +static const struct usb_device_id id_table[] = { + { USB_DEVICE(XSENS_VID, MTi_10_IMU_PID) }, + { USB_DEVICE(XSENS_VID, MTi_20_VRU_PID) }, + { USB_DEVICE(XSENS_VID, MTi_30_AHRS_PID) }, + + { USB_DEVICE(XSENS_VID, MTi_100_IMU_PID) }, + { USB_DEVICE(XSENS_VID, MTi_200_VRU_PID) }, + { USB_DEVICE(XSENS_VID, MTi_300_AHRS_PID) }, + + { USB_DEVICE(XSENS_VID, MTi_G_700_GPS_INS_PID) }, + { }, +}; +MODULE_DEVICE_TABLE(usb, id_table); + +static int has_required_endpoints(const struct usb_host_interface *interface) +{ + __u8 i; + int has_bulk_in = 0; + int has_bulk_out = 0; + + for (i = 0; i < interface->desc.bNumEndpoints; ++i) { + if (usb_endpoint_is_bulk_in(&interface->endpoint[i].desc)) + has_bulk_in = 1; + else if (usb_endpoint_is_bulk_out(&interface->endpoint[i].desc)) + has_bulk_out = 1; + } + + return has_bulk_in && has_bulk_out; +} + +static int xsens_mt_probe(struct usb_serial *serial, + const struct usb_device_id *id) +{ + if (!has_required_endpoints(serial->interface->cur_altsetting)) + return -ENODEV; + return 0; +} + +static struct usb_serial_driver xsens_mt_device = { + .driver = { + .owner = THIS_MODULE, + .name = "xsens_mt", + }, + .id_table = id_table, + .num_ports = 1, + + .probe = xsens_mt_probe, +}; + +static struct usb_serial_driver * const serial_drivers[] = { + &xsens_mt_device, NULL +}; + +module_usb_serial_driver(serial_drivers, id_table); + +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From bde027b456dc56a3673f886872a6425adc5e9aa4 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 25 Jan 2013 15:03:36 +0100 Subject: usb-uas: set max_lun and max_channel 256 luns is what the sam-4 address method 0 can handle and what the qemu uas emulation supports. So pick that for now. [ v2: unlike the other two max_* fields max_channel isn't max+1 ] Signed-off-by: Gerd Hoffmann Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/uas.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index ebb99728551c..d966b59f7d7b 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -991,6 +991,8 @@ static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id) shost->max_cmd_len = 16 + 252; shost->max_id = 1; + shost->max_lun = 256; + shost->max_channel = 0; shost->sg_tablesize = udev->bus->sg_tablesize; devinfo->intf = intf; -- cgit v1.2.3 From 88bb965ed711e8a5984e70208ebc901a6ff4141f Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Wed, 23 Jan 2013 04:26:27 +0800 Subject: usb: Register usb port's acpi power resources This patch is to register usb port's acpi power resources. Create link between usb port device and its acpi power resource. Acked-by: Alan Stern Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/port.c | 5 +++++ drivers/usb/core/usb-acpi.c | 18 ++++++++++++++++++ drivers/usb/core/usb.h | 6 ++++++ 3 files changed, 29 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index fe5959fc021b..153e799e7320 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -66,6 +66,7 @@ static void usb_port_device_release(struct device *dev) { struct usb_port *port_dev = to_usb_port(dev); + usb_acpi_unregister_power_resources(dev); kfree(port_dev); } @@ -95,6 +96,10 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1) if (retval) goto error_register; + retval = usb_acpi_register_power_resources(&port_dev->dev); + if (retval && retval != -ENODEV) + dev_warn(&port_dev->dev, "the port can't register its ACPI power resource.\n"); + return 0; error_register: diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index cef4252bb31a..8d304b0b5abf 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -216,6 +216,24 @@ static struct acpi_bus_type usb_acpi_bus = { .find_device = usb_acpi_find_device, }; +int usb_acpi_register_power_resources(struct device *dev) +{ + acpi_handle port_handle = DEVICE_ACPI_HANDLE(dev); + + if (!port_handle) + return -ENODEV; + + return acpi_power_resource_register_device(dev, port_handle); +} + +void usb_acpi_unregister_power_resources(struct device *dev) +{ + acpi_handle port_handle = DEVICE_ACPI_HANDLE(dev); + + if (port_handle) + acpi_power_resource_unregister_device(dev, port_handle); +} + int usb_acpi_register(void) { return register_acpi_bus_type(&usb_acpi_bus); diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index a7f20bde0e5e..601b044f90f0 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -191,7 +191,13 @@ extern int usb_acpi_register(void); extern void usb_acpi_unregister(void); extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, int port1); +extern int usb_acpi_register_power_resources(struct device *dev); +extern void usb_acpi_unregister_power_resources(struct device *dev); #else static inline int usb_acpi_register(void) { return 0; }; static inline void usb_acpi_unregister(void) { }; +static inline int usb_acpi_register_power_resources(struct device *dev) + { return 0; }; +static inline void usb_acpi_unregister_power_resources(struct device *dev) + { }; #endif -- cgit v1.2.3 From 6802771bba0455a751d8f4ece7587585be3eaa2f Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Wed, 23 Jan 2013 04:26:28 +0800 Subject: PM/Qos: Expose dev_pm_qos_flags symbol The dev_pm_qos_flags() will be used in the usb core which could be compiled as a module. This patch is to export it. Acked-by: Alan Stern Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- drivers/base/power/qos.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index d21349544ce5..3d4d1f8aac5c 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -91,6 +91,7 @@ enum pm_qos_flags_status dev_pm_qos_flags(struct device *dev, s32 mask) return ret; } +EXPORT_SYMBOL_GPL(dev_pm_qos_flags); /** * __dev_pm_qos_read_value - Get PM QoS constraint for a given device. -- cgit v1.2.3 From 971fcd492cebf544714f12d94549d2f0d2002645 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Wed, 23 Jan 2013 04:26:29 +0800 Subject: usb: add runtime pm support for usb port device This patch is to add runtime pm callback for usb port device. Set/clear PORT_POWER feature in the resume/suspend callback. Add portnum for struct usb_port to record port number. Do pm_rumtime_get_sync/put(portdev) when a device is plugged/unplugged to prevent it from being powered off when it is active. Acked-by: Alan Stern Acked-by: Rafael J. Wysocki Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 27 +++++++++++++++++++++++++++ drivers/usb/core/hub.h | 4 ++++ drivers/usb/core/port.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 77 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 29ca6ed3bea8..7fb163365d02 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -714,6 +714,27 @@ static void hub_tt_work(struct work_struct *work) spin_unlock_irqrestore (&hub->tt.lock, flags); } +/** + * usb_hub_set_port_power - control hub port's power state + * @hdev: target hub + * @port1: port index + * @set: expected status + * + * call this function to control port's power via setting or + * clearing the port's PORT_POWER feature. + */ +int usb_hub_set_port_power(struct usb_device *hdev, int port1, + bool set) +{ + int ret; + + if (set) + ret = set_port_feature(hdev, port1, USB_PORT_FEAT_POWER); + else + ret = clear_port_feature(hdev, port1, USB_PORT_FEAT_POWER); + return ret; +} + /** * usb_hub_clear_tt_buffer - clear control/bulk TT state in high speed hub * @urb: an URB associated with the failed or incomplete split transaction @@ -1569,6 +1590,7 @@ static void hub_disconnect(struct usb_interface *intf) kfree(hub->status); kfree(hub->buffer); + pm_suspend_ignore_children(&intf->dev, false); kref_put(&hub->kref, hub_release); } @@ -1671,6 +1693,7 @@ descriptor_error: usb_set_intfdata (intf, hub); intf->needs_remote_wakeup = 1; + pm_suspend_ignore_children(&intf->dev, true); if (hdev->speed == USB_SPEED_HIGH) highspeed_hubs++; @@ -1997,6 +2020,8 @@ void usb_disconnect(struct usb_device **pdev) sysfs_remove_link(&udev->dev.kobj, "port"); sysfs_remove_link(&port_dev->dev.kobj, "device"); + + pm_runtime_put(&port_dev->dev); } usb_remove_ep_devs(&udev->ep0); @@ -2307,6 +2332,8 @@ int usb_new_device(struct usb_device *udev) sysfs_remove_link(&udev->dev.kobj, "port"); goto fail; } + + pm_runtime_get_sync(&port_dev->dev); } (void) usb_create_ep_devs(&udev->dev, &udev->ep0, udev); diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index c472058f8f27..452e5cd7b249 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -79,12 +79,14 @@ struct usb_hub { * @dev: generic device interface * @port_owner: port's owner * @connect_type: port's connect type + * @portnum: port index num based one */ struct usb_port { struct usb_device *child; struct device dev; struct dev_state *port_owner; enum usb_port_connect_type connect_type; + u8 portnum; }; #define to_usb_port(_dev) \ @@ -94,4 +96,6 @@ extern int usb_hub_create_port_device(struct usb_hub *hub, int port1); extern void usb_hub_remove_port_device(struct usb_hub *hub, int port1); +extern int usb_hub_set_port_power(struct usb_device *hdev, + int port1, bool set); diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index 153e799e7320..d288dfed6ccf 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -17,6 +17,7 @@ */ #include +#include #include "hub.h" @@ -70,9 +71,50 @@ static void usb_port_device_release(struct device *dev) kfree(port_dev); } +#ifdef CONFIG_USB_SUSPEND +static int usb_port_runtime_resume(struct device *dev) +{ + struct usb_port *port_dev = to_usb_port(dev); + struct usb_device *hdev = to_usb_device(dev->parent->parent); + struct usb_interface *intf = to_usb_interface(dev->parent); + int retval; + + usb_autopm_get_interface(intf); + retval = usb_hub_set_port_power(hdev, port_dev->portnum, true); + usb_autopm_put_interface(intf); + return retval; +} + +static int usb_port_runtime_suspend(struct device *dev) +{ + struct usb_port *port_dev = to_usb_port(dev); + struct usb_device *hdev = to_usb_device(dev->parent->parent); + struct usb_interface *intf = to_usb_interface(dev->parent); + int retval; + + if (dev_pm_qos_flags(&port_dev->dev, PM_QOS_FLAG_NO_POWER_OFF) + == PM_QOS_FLAGS_ALL) + return -EAGAIN; + + usb_autopm_get_interface(intf); + retval = usb_hub_set_port_power(hdev, port_dev->portnum, false); + usb_autopm_put_interface(intf); + return retval; +} +#endif + +static const struct dev_pm_ops usb_port_pm_ops = { +#ifdef CONFIG_USB_SUSPEND + .runtime_suspend = usb_port_runtime_suspend, + .runtime_resume = usb_port_runtime_resume, + .runtime_idle = pm_generic_runtime_idle, +#endif +}; + struct device_type usb_port_device_type = { .name = "usb_port", .release = usb_port_device_release, + .pm = &usb_port_pm_ops, }; int usb_hub_create_port_device(struct usb_hub *hub, int port1) @@ -87,6 +129,7 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1) } hub->ports[port1 - 1] = port_dev; + port_dev->portnum = port1; port_dev->dev.parent = hub->intfdev; port_dev->dev.groups = port_dev_group; port_dev->dev.type = &usb_port_device_type; @@ -96,6 +139,9 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1) if (retval) goto error_register; + pm_runtime_set_active(&port_dev->dev); + pm_runtime_enable(&port_dev->dev); + retval = usb_acpi_register_power_resources(&port_dev->dev); if (retval && retval != -ENODEV) dev_warn(&port_dev->dev, "the port can't register its ACPI power resource.\n"); -- cgit v1.2.3 From ad493e5e580546e6c3024b76a41535476da1546a Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Wed, 23 Jan 2013 04:26:30 +0800 Subject: usb: add usb port auto power off mechanism This patch is to add usb port auto power off mechanism. When usb device is suspending, usb core will suspend usb port and usb port runtime pm callback will clear PORT_POWER feature to power off port if all conditions were met. These conditions are remote wakeup disable, pm qos NO_POWER_OFF flag clear and persist enable. When it resumes, power on port again. Add did_runtime_put in the struct usb_port to ensure pm_runtime_get/put(portdev) to be called pairedly. Set did_runtime_put to true when call pm_runtime_put(portdev) during suspending. The pm_runtime_get(portdev) only will be called when did_runtime_put is set to true during resuming. Set did_runtime_put to false after calling pm_runtime_get(portdev). Make clear_port_feature() and hdev_to_hub() as global symbol. Rename clear_port_feature() to usb_clear_port_feature() and hdev_to_hub() to usb_hub_to_struct_hub(). Extend hub_port_debounce() with the fuction of debouncing to be connected. Add two wraps: hub_port_debounce_be_connected() and hub_port_debouce_be_stable(). Increase HUB_DEBOUNCE_TIMEOUT to 2000 because some usb ssds needs around 1.5 or more to make the hub port status to be connected steadily after being powered off and powered on. Acked-by: Alan Stern Acked-by: Rafael J. Wysocki Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 161 +++++++++++++++++++++++++++++++----------------- drivers/usb/core/hub.h | 21 +++++++ drivers/usb/core/port.c | 40 +++++++++++- 3 files changed, 164 insertions(+), 58 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 7fb163365d02..0883364e7347 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include @@ -108,7 +109,7 @@ MODULE_PARM_DESC(use_both_schemes, DECLARE_RWSEM(ehci_cf_port_reset_rwsem); EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem); -#define HUB_DEBOUNCE_TIMEOUT 1500 +#define HUB_DEBOUNCE_TIMEOUT 2000 #define HUB_DEBOUNCE_STEP 25 #define HUB_DEBOUNCE_STABLE 100 @@ -127,7 +128,7 @@ static inline char *portspeed(struct usb_hub *hub, int portstatus) } /* Note that hdev or one of its children must be locked! */ -static struct usb_hub *hdev_to_hub(struct usb_device *hdev) +struct usb_hub *usb_hub_to_struct_hub(struct usb_device *hdev) { if (!hdev || !hdev->actconfig || !hdev->maxchild) return NULL; @@ -301,7 +302,7 @@ static void usb_set_lpm_parameters(struct usb_device *udev) if (!udev->lpm_capable || udev->speed != USB_SPEED_SUPER) return; - hub = hdev_to_hub(udev->parent); + hub = usb_hub_to_struct_hub(udev->parent); /* It doesn't take time to transition the roothub into U0, since it * doesn't have an upstream link. */ @@ -393,7 +394,7 @@ static int clear_hub_feature(struct usb_device *hdev, int feature) /* * USB 2.0 spec Section 11.24.2.2 */ -static int clear_port_feature(struct usb_device *hdev, int port1, int feature) +int usb_clear_port_feature(struct usb_device *hdev, int port1, int feature) { return usb_control_msg(hdev, usb_sndctrlpipe(hdev, 0), USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, port1, @@ -586,7 +587,7 @@ static void kick_khubd(struct usb_hub *hub) void usb_kick_khubd(struct usb_device *hdev) { - struct usb_hub *hub = hdev_to_hub(hdev); + struct usb_hub *hub = usb_hub_to_struct_hub(hdev); if (hub) kick_khubd(hub); @@ -608,7 +609,7 @@ void usb_wakeup_notification(struct usb_device *hdev, if (!hdev) return; - hub = hdev_to_hub(hdev); + hub = usb_hub_to_struct_hub(hdev); if (hub) { set_bit(portnum, hub->wakeup_bits); kick_khubd(hub); @@ -727,11 +728,16 @@ int usb_hub_set_port_power(struct usb_device *hdev, int port1, bool set) { int ret; + struct usb_hub *hub = usb_hub_to_struct_hub(hdev); + struct usb_port *port_dev = hub->ports[port1 - 1]; if (set) ret = set_port_feature(hdev, port1, USB_PORT_FEAT_POWER); else - ret = clear_port_feature(hdev, port1, USB_PORT_FEAT_POWER); + ret = usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_POWER); + + if (!ret) + port_dev->power_is_on = set; return ret; } @@ -811,7 +817,11 @@ static unsigned hub_power_on(struct usb_hub *hub, bool do_delay) dev_dbg(hub->intfdev, "trying to enable port power on " "non-switchable hub\n"); for (port1 = 1; port1 <= hub->descriptor->bNbrPorts; port1++) - set_port_feature(hub->hdev, port1, USB_PORT_FEAT_POWER); + if (hub->ports[port1 - 1]->power_is_on) + set_port_feature(hub->hdev, port1, USB_PORT_FEAT_POWER); + else + usb_clear_port_feature(hub->hdev, port1, + USB_PORT_FEAT_POWER); /* Wait at least 100 msec for power to become stable */ delay = max(pgood_delay, (unsigned) 100); @@ -905,7 +915,7 @@ static int hub_port_disable(struct usb_hub *hub, int port1, int set_state) if (hub_is_superspeed(hub->hdev)) ret = hub_usb3_port_disable(hub, port1); else - ret = clear_port_feature(hdev, port1, + ret = usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_ENABLE); } if (ret) @@ -954,7 +964,7 @@ int usb_remove_device(struct usb_device *udev) if (!udev->parent) /* Can't remove a root hub */ return -EINVAL; - hub = hdev_to_hub(udev->parent); + hub = usb_hub_to_struct_hub(udev->parent); intf = to_usb_interface(hub->intfdev); usb_autopm_get_interface(intf); @@ -1086,7 +1096,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) * Do not disable USB3 protocol ports. */ if (!hub_is_superspeed(hdev)) { - clear_port_feature(hdev, port1, + usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_ENABLE); portstatus &= ~USB_PORT_STAT_ENABLE; } else { @@ -1098,18 +1108,18 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) /* Clear status-change flags; we'll debounce later */ if (portchange & USB_PORT_STAT_C_CONNECTION) { need_debounce_delay = true; - clear_port_feature(hub->hdev, port1, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_CONNECTION); } if (portchange & USB_PORT_STAT_C_ENABLE) { need_debounce_delay = true; - clear_port_feature(hub->hdev, port1, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_ENABLE); } if ((portchange & USB_PORT_STAT_C_BH_RESET) && hub_is_superspeed(hub->hdev)) { need_debounce_delay = true; - clear_port_feature(hub->hdev, port1, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_BH_PORT_RESET); } /* We can forget about a "removed" device when there's a @@ -1143,10 +1153,16 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) set_bit(port1, hub->change_bits); } else if (udev->persist_enabled) { + struct usb_port *port_dev = hub->ports[port1 - 1]; + #ifdef CONFIG_PM udev->reset_resume = 1; #endif - set_bit(port1, hub->change_bits); + /* Don't set the change_bits when the device + * was powered off. + */ + if (port_dev->power_is_on) + set_bit(port1, hub->change_bits); } else { /* The power session is gone; tell khubd */ @@ -1712,7 +1728,7 @@ static int hub_ioctl(struct usb_interface *intf, unsigned int code, void *user_data) { struct usb_device *hdev = interface_to_usbdev (intf); - struct usb_hub *hub = hdev_to_hub(hdev); + struct usb_hub *hub = usb_hub_to_struct_hub(hdev); /* assert ifno == 0 (part of hub spec) */ switch (code) { @@ -1758,7 +1774,7 @@ static int find_port_owner(struct usb_device *hdev, unsigned port1, /* This assumes that devices not managed by the hub driver * will always have maxchild equal to 0. */ - *ppowner = &(hdev_to_hub(hdev)->ports[port1 - 1]->port_owner); + *ppowner = &(usb_hub_to_struct_hub(hdev)->ports[port1 - 1]->port_owner); return 0; } @@ -1795,7 +1811,7 @@ int usb_hub_release_port(struct usb_device *hdev, unsigned port1, void usb_hub_release_all_ports(struct usb_device *hdev, struct dev_state *owner) { - struct usb_hub *hub = hdev_to_hub(hdev); + struct usb_hub *hub = usb_hub_to_struct_hub(hdev); int n; for (n = 0; n < hdev->maxchild; n++) { @@ -1812,13 +1828,13 @@ bool usb_device_is_owned(struct usb_device *udev) if (udev->state == USB_STATE_NOTATTACHED || !udev->parent) return false; - hub = hdev_to_hub(udev->parent); + hub = usb_hub_to_struct_hub(udev->parent); return !!hub->ports[udev->portnum - 1]->port_owner; } static void recursively_mark_NOTATTACHED(struct usb_device *udev) { - struct usb_hub *hub = hdev_to_hub(udev); + struct usb_hub *hub = usb_hub_to_struct_hub(udev); int i; for (i = 0; i < udev->maxchild; ++i) { @@ -1987,7 +2003,7 @@ static void hub_free_dev(struct usb_device *udev) void usb_disconnect(struct usb_device **pdev) { struct usb_device *udev = *pdev; - struct usb_hub *hub = hdev_to_hub(udev); + struct usb_hub *hub = usb_hub_to_struct_hub(udev); int i; /* mark the device as inactive, so any further urb submissions for @@ -2015,13 +2031,16 @@ void usb_disconnect(struct usb_device **pdev) usb_hcd_synchronize_unlinks(udev); if (udev->parent) { - struct usb_port *port_dev = - hdev_to_hub(udev->parent)->ports[udev->portnum - 1]; + struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); + struct usb_port *port_dev = hub->ports[udev->portnum - 1]; sysfs_remove_link(&udev->dev.kobj, "port"); sysfs_remove_link(&port_dev->dev.kobj, "device"); - pm_runtime_put(&port_dev->dev); + if (!port_dev->did_runtime_put) + pm_runtime_put(&port_dev->dev); + else + port_dev->did_runtime_put = false; } usb_remove_ep_devs(&udev->ep0); @@ -2210,7 +2229,7 @@ static void set_usb_port_removable(struct usb_device *udev) if (!hdev) return; - hub = hdev_to_hub(udev->parent); + hub = usb_hub_to_struct_hub(udev->parent); wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics); @@ -2318,8 +2337,8 @@ int usb_new_device(struct usb_device *udev) /* Create link files between child device and usb port device. */ if (udev->parent) { - struct usb_port *port_dev = - hdev_to_hub(udev->parent)->ports[udev->portnum - 1]; + struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); + struct usb_port *port_dev = hub->ports[udev->portnum - 1]; err = sysfs_create_link(&udev->dev.kobj, &port_dev->dev.kobj, "port"); @@ -2567,14 +2586,14 @@ static void hub_port_finish_reset(struct usb_hub *hub, int port1, /* FALL THROUGH */ case -ENOTCONN: case -ENODEV: - clear_port_feature(hub->hdev, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_RESET); if (hub_is_superspeed(hub->hdev)) { - clear_port_feature(hub->hdev, port1, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_BH_PORT_RESET); - clear_port_feature(hub->hdev, port1, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_PORT_LINK_STATE); - clear_port_feature(hub->hdev, port1, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_CONNECTION); } if (udev) @@ -2748,10 +2767,10 @@ static int check_port_resume_type(struct usb_device *udev, /* Late port handoff can set status-change bits */ if (portchange & USB_PORT_STAT_C_CONNECTION) - clear_port_feature(hub->hdev, port1, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_CONNECTION); if (portchange & USB_PORT_STAT_C_ENABLE) - clear_port_feature(hub->hdev, port1, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_ENABLE); } @@ -2852,7 +2871,9 @@ EXPORT_SYMBOL_GPL(usb_enable_ltm); */ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) { - struct usb_hub *hub = hdev_to_hub(udev->parent); + struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); + struct usb_port *port_dev = hub->ports[udev->portnum - 1]; + enum pm_qos_flags_status pm_qos_stat; int port1 = udev->portnum; int status; @@ -2945,6 +2966,21 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) udev->port_is_suspended = 1; msleep(10); } + + /* + * Check whether current status meets the requirement of + * usb port power off mechanism + */ + pm_qos_stat = dev_pm_qos_flags(&port_dev->dev, + PM_QOS_FLAG_NO_POWER_OFF); + if (!udev->do_remote_wakeup + && pm_qos_stat != PM_QOS_FLAGS_ALL + && udev->persist_enabled + && !status) { + pm_runtime_put_sync(&port_dev->dev); + port_dev->did_runtime_put = true; + } + usb_mark_last_busy(hub->hdev); return status; } @@ -3070,11 +3106,22 @@ static int finish_port_resume(struct usb_device *udev) */ int usb_port_resume(struct usb_device *udev, pm_message_t msg) { - struct usb_hub *hub = hdev_to_hub(udev->parent); + struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); + struct usb_port *port_dev = hub->ports[udev->portnum - 1]; int port1 = udev->portnum; int status; u16 portchange, portstatus; + if (port_dev->did_runtime_put) { + status = pm_runtime_get_sync(&port_dev->dev); + port_dev->did_runtime_put = false; + if (status < 0) { + dev_dbg(&udev->dev, "can't resume usb port, status %d\n", + status); + return status; + } + } + /* Skip the initial Clear-Suspend step for a remote wakeup */ status = hub_port_status(hub, port1, &portstatus, &portchange); if (status == 0 && !port_is_suspended(hub, portstatus)) @@ -3088,7 +3135,7 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) if (hub_is_superspeed(hub->hdev)) status = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_U0); else - status = clear_port_feature(hub->hdev, + status = usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_SUSPEND); if (status) { dev_dbg(hub->intfdev, "can't resume port %d, status %d\n", @@ -3114,11 +3161,11 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) udev->port_is_suspended = 0; if (hub_is_superspeed(hub->hdev)) { if (portchange & USB_PORT_STAT_C_LINK_STATE) - clear_port_feature(hub->hdev, port1, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_PORT_LINK_STATE); } else { if (portchange & USB_PORT_STAT_C_SUSPEND) - clear_port_feature(hub->hdev, port1, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_SUSPEND); } } @@ -3174,7 +3221,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) int usb_port_resume(struct usb_device *udev, pm_message_t msg) { - struct usb_hub *hub = hdev_to_hub(udev->parent); + struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent); int port1 = udev->portnum; int status; u16 portchange, portstatus; @@ -3753,7 +3800,7 @@ EXPORT_SYMBOL_GPL(usb_enable_ltm); * every 25ms for transient disconnects. When the port status has been * unchanged for 100ms it returns the port status. */ -static int hub_port_debounce(struct usb_hub *hub, int port1) +int hub_port_debounce(struct usb_hub *hub, int port1, bool must_be_connected) { int ret; int total_time, stable_time = 0; @@ -3767,7 +3814,9 @@ static int hub_port_debounce(struct usb_hub *hub, int port1) if (!(portchange & USB_PORT_STAT_C_CONNECTION) && (portstatus & USB_PORT_STAT_CONNECTION) == connection) { - stable_time += HUB_DEBOUNCE_STEP; + if (!must_be_connected || + (connection == USB_PORT_STAT_CONNECTION)) + stable_time += HUB_DEBOUNCE_STEP; if (stable_time >= HUB_DEBOUNCE_STABLE) break; } else { @@ -3776,7 +3825,7 @@ static int hub_port_debounce(struct usb_hub *hub, int port1) } if (portchange & USB_PORT_STAT_C_CONNECTION) { - clear_port_feature(hub->hdev, port1, + usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_C_CONNECTION); } @@ -4288,7 +4337,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, if (portchange & (USB_PORT_STAT_C_CONNECTION | USB_PORT_STAT_C_ENABLE)) { - status = hub_port_debounce(hub, port1); + status = hub_port_debounce_be_stable(hub, port1); if (status < 0) { if (printk_ratelimit()) dev_err(hub_dev, "connect-debounce failed, " @@ -4467,7 +4516,7 @@ static int hub_handle_remote_wakeup(struct usb_hub *hub, unsigned int port, if (!hub_is_superspeed(hdev)) { if (!(portchange & USB_PORT_STAT_C_SUSPEND)) return 0; - clear_port_feature(hdev, port, USB_PORT_FEAT_C_SUSPEND); + usb_clear_port_feature(hdev, port, USB_PORT_FEAT_C_SUSPEND); } else { if (!udev || udev->state != USB_STATE_SUSPENDED || (portstatus & USB_PORT_STAT_LINK_STATE) != @@ -4595,7 +4644,7 @@ static void hub_events(void) continue; if (portchange & USB_PORT_STAT_C_CONNECTION) { - clear_port_feature(hdev, i, + usb_clear_port_feature(hdev, i, USB_PORT_FEAT_C_CONNECTION); connect_change = 1; } @@ -4606,7 +4655,7 @@ static void hub_events(void) "port %d enable change, " "status %08x\n", i, portstatus); - clear_port_feature(hdev, i, + usb_clear_port_feature(hdev, i, USB_PORT_FEAT_C_ENABLE); /* @@ -4637,7 +4686,7 @@ static void hub_events(void) dev_dbg(hub_dev, "over-current change on port " "%d\n", i); - clear_port_feature(hdev, i, + usb_clear_port_feature(hdev, i, USB_PORT_FEAT_C_OVER_CURRENT); msleep(100); /* Cool down */ hub_power_on(hub, true); @@ -4651,7 +4700,7 @@ static void hub_events(void) dev_dbg (hub_dev, "reset change on port %d\n", i); - clear_port_feature(hdev, i, + usb_clear_port_feature(hdev, i, USB_PORT_FEAT_C_RESET); } if ((portchange & USB_PORT_STAT_C_BH_RESET) && @@ -4659,18 +4708,18 @@ static void hub_events(void) dev_dbg(hub_dev, "warm reset change on port %d\n", i); - clear_port_feature(hdev, i, + usb_clear_port_feature(hdev, i, USB_PORT_FEAT_C_BH_PORT_RESET); } if (portchange & USB_PORT_STAT_C_LINK_STATE) { - clear_port_feature(hub->hdev, i, + usb_clear_port_feature(hub->hdev, i, USB_PORT_FEAT_C_PORT_LINK_STATE); } if (portchange & USB_PORT_STAT_C_CONFIG_ERROR) { dev_warn(hub_dev, "config error on port %d\n", i); - clear_port_feature(hub->hdev, i, + usb_clear_port_feature(hub->hdev, i, USB_PORT_FEAT_C_PORT_CONFIG_ERROR); } @@ -4954,7 +5003,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev) dev_dbg(&udev->dev, "%s for root hub!\n", __func__); return -EISDIR; } - parent_hub = hdev_to_hub(parent_hdev); + parent_hub = usb_hub_to_struct_hub(parent_hdev); /* Disable LPM and LTM while we reset the device and reinstall the alt * settings. Device-initiated LPM settings, and system exit latency @@ -5210,7 +5259,7 @@ EXPORT_SYMBOL_GPL(usb_queue_reset_device); struct usb_device *usb_hub_find_child(struct usb_device *hdev, int port1) { - struct usb_hub *hub = hdev_to_hub(hdev); + struct usb_hub *hub = usb_hub_to_struct_hub(hdev); if (port1 < 1 || port1 > hdev->maxchild) return NULL; @@ -5227,7 +5276,7 @@ EXPORT_SYMBOL_GPL(usb_hub_find_child); void usb_set_hub_port_connect_type(struct usb_device *hdev, int port1, enum usb_port_connect_type type) { - struct usb_hub *hub = hdev_to_hub(hdev); + struct usb_hub *hub = usb_hub_to_struct_hub(hdev); hub->ports[port1 - 1]->connect_type = type; } @@ -5243,7 +5292,7 @@ void usb_set_hub_port_connect_type(struct usb_device *hdev, int port1, enum usb_port_connect_type usb_get_hub_port_connect_type(struct usb_device *hdev, int port1) { - struct usb_hub *hub = hdev_to_hub(hdev); + struct usb_hub *hub = usb_hub_to_struct_hub(hdev); return hub->ports[port1 - 1]->connect_type; } @@ -5301,7 +5350,7 @@ void usb_hub_adjust_deviceremovable(struct usb_device *hdev, acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, int port1) { - struct usb_hub *hub = hdev_to_hub(hdev); + struct usb_hub *hub = usb_hub_to_struct_hub(hdev); return DEVICE_ACPI_HANDLE(&hub->ports[port1 - 1]->dev); } diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index 452e5cd7b249..80ab9ee07017 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -80,6 +80,8 @@ struct usb_hub { * @port_owner: port's owner * @connect_type: port's connect type * @portnum: port index num based one + * @power_is_on: port's power state + * @did_runtime_put: port has done pm_runtime_put(). */ struct usb_port { struct usb_device *child; @@ -87,6 +89,8 @@ struct usb_port { struct dev_state *port_owner; enum usb_port_connect_type connect_type; u8 portnum; + unsigned power_is_on:1; + unsigned did_runtime_put:1; }; #define to_usb_port(_dev) \ @@ -98,4 +102,21 @@ extern void usb_hub_remove_port_device(struct usb_hub *hub, int port1); extern int usb_hub_set_port_power(struct usb_device *hdev, int port1, bool set); +extern struct usb_hub *usb_hub_to_struct_hub(struct usb_device *hdev); +extern int hub_port_debounce(struct usb_hub *hub, int port1, + bool must_be_connected); +extern int usb_clear_port_feature(struct usb_device *hdev, + int port1, int feature); + +static inline int hub_port_debounce_be_connected(struct usb_hub *hub, + int port1) +{ + return hub_port_debounce(hub, port1, true); +} + +static inline int hub_port_debounce_be_stable(struct usb_hub *hub, + int port1) +{ + return hub_port_debounce(hub, port1, false); +} diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index d288dfed6ccf..280433d80887 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -77,10 +77,36 @@ static int usb_port_runtime_resume(struct device *dev) struct usb_port *port_dev = to_usb_port(dev); struct usb_device *hdev = to_usb_device(dev->parent->parent); struct usb_interface *intf = to_usb_interface(dev->parent); + struct usb_hub *hub = usb_hub_to_struct_hub(hdev); + int port1 = port_dev->portnum; int retval; + if (!hub) + return -EINVAL; + usb_autopm_get_interface(intf); - retval = usb_hub_set_port_power(hdev, port_dev->portnum, true); + set_bit(port1, hub->busy_bits); + + retval = usb_hub_set_port_power(hdev, port1, true); + if (port_dev->child && !retval) { + /* + * Wait for usb hub port to be reconnected in order to make + * the resume procedure successful. + */ + retval = hub_port_debounce_be_connected(hub, port1); + if (retval < 0) { + dev_dbg(&port_dev->dev, "can't get reconnection after setting port power on, status %d\n", + retval); + goto out; + } + usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_ENABLE); + + /* Set return value to 0 if debounce successful */ + retval = 0; + } + +out: + clear_bit(port1, hub->busy_bits); usb_autopm_put_interface(intf); return retval; } @@ -90,14 +116,23 @@ static int usb_port_runtime_suspend(struct device *dev) struct usb_port *port_dev = to_usb_port(dev); struct usb_device *hdev = to_usb_device(dev->parent->parent); struct usb_interface *intf = to_usb_interface(dev->parent); + struct usb_hub *hub = usb_hub_to_struct_hub(hdev); + int port1 = port_dev->portnum; int retval; + if (!hub) + return -EINVAL; + if (dev_pm_qos_flags(&port_dev->dev, PM_QOS_FLAG_NO_POWER_OFF) == PM_QOS_FLAGS_ALL) return -EAGAIN; usb_autopm_get_interface(intf); - retval = usb_hub_set_port_power(hdev, port_dev->portnum, false); + set_bit(port1, hub->busy_bits); + retval = usb_hub_set_port_power(hdev, port1, false); + usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_CONNECTION); + usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_ENABLE); + clear_bit(port1, hub->busy_bits); usb_autopm_put_interface(intf); return retval; } @@ -130,6 +165,7 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1) hub->ports[port1 - 1] = port_dev; port_dev->portnum = port1; + port_dev->power_is_on = true; port_dev->dev.parent = hub->intfdev; port_dev->dev.groups = port_dev_group; port_dev->dev.type = &usb_port_device_type; -- cgit v1.2.3 From f6cced1a08b475c5ac946823bb057714be7af4f6 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Wed, 23 Jan 2013 04:26:31 +0800 Subject: usb: expose usb port's pm qos flags to user space This patch is to expose usb port's pm qos flags(pm_qos_no_power_off, pm_qos_remote_wakeup) to user space. User can set pm_qos_no_power_off flag to prohibit the port from being powered off. Acked-by: Alan Stern Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/port.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index 280433d80887..9a15b26944ec 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -67,6 +67,7 @@ static void usb_port_device_release(struct device *dev) { struct usb_port *port_dev = to_usb_port(dev); + dev_pm_qos_hide_flags(dev); usb_acpi_unregister_power_resources(dev); kfree(port_dev); } @@ -176,7 +177,15 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1) goto error_register; pm_runtime_set_active(&port_dev->dev); - pm_runtime_enable(&port_dev->dev); + + /* It would be dangerous if user space couldn't + * prevent usb device from being powered off. So don't + * enable port runtime pm if failed to expose port's pm qos. + */ + if (!dev_pm_qos_expose_flags(&port_dev->dev, + PM_QOS_FLAG_NO_POWER_OFF)) + pm_runtime_enable(&port_dev->dev); + retval = usb_acpi_register_power_resources(&port_dev->dev); if (retval && retval != -ENODEV) -- cgit v1.2.3 From 192fef18d0f5ac9a05a93ff6314fc9865c10fbf9 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Wed, 23 Jan 2013 04:26:32 +0800 Subject: usb: enable usb port device's async suspend. This patch is to set power.async_suspend for usb port in order to allow it to be suspended and resumed asynchronously during system sleep transitions. The power.async_suspend flag is also set for devices that don't have suspend or resume callbacks, because otherwise they would make the main suspend/resume thread wait for their "asynchronous" children (during suspend) or parents (during resume), effectively negating the possible gains from executing these devices' suspend and resume callbacks asynchronously. Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/port.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index 9a15b26944ec..5df143dbd759 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -186,6 +186,7 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1) PM_QOS_FLAG_NO_POWER_OFF)) pm_runtime_enable(&port_dev->dev); + device_enable_async_suspend(&port_dev->dev); retval = usb_acpi_register_power_resources(&port_dev->dev); if (retval && retval != -ENODEV) -- cgit v1.2.3 From 3b2ab2b84c68fb92accbc735927bc8221e4de973 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Tue, 29 Jan 2013 00:59:06 +0800 Subject: Revert "usb: Register usb port's acpi power resources" This reverts commit 88bb965ed711e8a5984e70208ebc901a6ff4141f. The linux-next branch of linux-pm tree has replaced acpi_power_resource_(un)register_device() with new routines. Commit 88bb965 will cause conflict in the linux-next tree. So revert it and this will not affect other functions. Will send a new patch with new routines after 3.9 merge window. Signed-off-by: Lan Tianyu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/port.c | 6 ------ drivers/usb/core/usb-acpi.c | 18 ------------------ drivers/usb/core/usb.h | 6 ------ 3 files changed, 30 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index 5df143dbd759..797f9d514732 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -68,7 +68,6 @@ static void usb_port_device_release(struct device *dev) struct usb_port *port_dev = to_usb_port(dev); dev_pm_qos_hide_flags(dev); - usb_acpi_unregister_power_resources(dev); kfree(port_dev); } @@ -187,11 +186,6 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1) pm_runtime_enable(&port_dev->dev); device_enable_async_suspend(&port_dev->dev); - - retval = usb_acpi_register_power_resources(&port_dev->dev); - if (retval && retval != -ENODEV) - dev_warn(&port_dev->dev, "the port can't register its ACPI power resource.\n"); - return 0; error_register: diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index 8d304b0b5abf..cef4252bb31a 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -216,24 +216,6 @@ static struct acpi_bus_type usb_acpi_bus = { .find_device = usb_acpi_find_device, }; -int usb_acpi_register_power_resources(struct device *dev) -{ - acpi_handle port_handle = DEVICE_ACPI_HANDLE(dev); - - if (!port_handle) - return -ENODEV; - - return acpi_power_resource_register_device(dev, port_handle); -} - -void usb_acpi_unregister_power_resources(struct device *dev) -{ - acpi_handle port_handle = DEVICE_ACPI_HANDLE(dev); - - if (port_handle) - acpi_power_resource_unregister_device(dev, port_handle); -} - int usb_acpi_register(void) { return register_acpi_bus_type(&usb_acpi_bus); diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 601b044f90f0..a7f20bde0e5e 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -191,13 +191,7 @@ extern int usb_acpi_register(void); extern void usb_acpi_unregister(void); extern acpi_handle usb_get_hub_port_acpi_handle(struct usb_device *hdev, int port1); -extern int usb_acpi_register_power_resources(struct device *dev); -extern void usb_acpi_unregister_power_resources(struct device *dev); #else static inline int usb_acpi_register(void) { return 0; }; static inline void usb_acpi_unregister(void) { }; -static inline int usb_acpi_register_power_resources(struct device *dev) - { return 0; }; -static inline void usb_acpi_unregister_power_resources(struct device *dev) - { }; #endif -- cgit v1.2.3 From 6992819feb39cb9adac72170555d957d07f869f2 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 28 Jan 2013 10:20:47 +0200 Subject: usb: phy: fix Kconfig warning Recent commits introduced the following Kconfig warning: warning: (USB_MUSB_HDRC && OMAP_USB3) selects \ OMAP_CONTROL_USB which has unmet direct \ dependencies (USB_SUPPORT && ARCH_OMAP2PLUS) This patch just fixes it, by removing the unnecessary OMAP dependency. Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/phy/Kconfig | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 9bbedecb3371..65217a590068 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -27,7 +27,6 @@ config OMAP_USB3 config OMAP_CONTROL_USB tristate "OMAP CONTROL USB Driver" - depends on ARCH_OMAP2PLUS help Enable this to add support for the USB part present in the control module. This driver has API to power on the USB2 PHY and to write to -- cgit v1.2.3 From de9c6307c0cdf24a08facbc808fe3989a145c93a Mon Sep 17 00:00:00 2001 From: Arvid Brodin Date: Sun, 27 Jan 2013 16:41:26 +0100 Subject: usb/isp1760: declare schedule_ptds() and errata2_function() static Fix two problems detected by the sparse code analyser: |drivers/usb/host/isp1760-hcd.c:935:6: warning: symbol 'schedule_ptds' was not declared. Should it be static? |drivers/usb/host/isp1760-hcd.c:1288:6: warning: symbol 'errata2_function' was not declared. Should it be static? Signed-off-by: Arvid Brodin Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/isp1760-hcd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c index a35bbddf8968..125e261f5bfc 100644 --- a/drivers/usb/host/isp1760-hcd.c +++ b/drivers/usb/host/isp1760-hcd.c @@ -932,7 +932,7 @@ static void enqueue_qtds(struct usb_hcd *hcd, struct isp1760_qh *qh) } } -void schedule_ptds(struct usb_hcd *hcd) +static void schedule_ptds(struct usb_hcd *hcd) { struct isp1760_hcd *priv; struct isp1760_qh *qh, *qh_next; @@ -1285,7 +1285,7 @@ leave: #define SLOT_CHECK_PERIOD 200 static struct timer_list errata2_timer; -void errata2_function(unsigned long data) +static void errata2_function(unsigned long data) { struct usb_hcd *hcd = (struct usb_hcd *) data; struct isp1760_hcd *priv = hcd_to_priv(hcd); -- cgit v1.2.3 From 7b8bc3aad0deabf3bc50cd2fe29bce29be5681fe Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Sun, 27 Jan 2013 22:45:05 -0200 Subject: USB: chipidea: ci13xxx_imx: Remove sparse warning Remove the following sparse warning: drivers/usb/chipidea/ci13xxx_imx.h:22:25: error: dubious one-bit signed bitfield drivers/usb/chipidea/ci13xxx_imx.h:22:25: error: dubious one-bit signed bitfield Signed-off-by: Fabio Estevam Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci13xxx_imx.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/chipidea/ci13xxx_imx.h b/drivers/usb/chipidea/ci13xxx_imx.h index 2e88accb3d67..9cd2e910b1ca 100644 --- a/drivers/usb/chipidea/ci13xxx_imx.h +++ b/drivers/usb/chipidea/ci13xxx_imx.h @@ -19,7 +19,7 @@ struct usbmisc_usb_device { struct device *dev; /* usb controller device */ int index; - int disable_oc:1; /* over current detect disabled */ + unsigned int disable_oc:1; /* over current detect disabled */ }; int usbmisc_set_ops(const struct usbmisc_ops *ops); -- cgit v1.2.3 From d0b4652f80c3276a57ede3b6b6d8159fa26c091f Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 30 Jan 2013 16:38:11 -0500 Subject: USB: altsetting overrides for usbtest The usbtest driver includes some rather simple-minded logic for selecting an altsetting to test. It doesn't work well for the g_zero gadget, because it selects altsetting 0 (which doesn't have isochronous endpoints) rather than altsetting 1 (which does have them, if the gadget's hardware supports them). This prevents usbtest's isochronous tests (15, 16, 22, and 23) from working with g_zero. Since g_zero is one of the most common gadget drivers used for USB testing, usbtest should do a better job of supporting it. But since some programs may rely on the current scheme for selecting altsettings, I didn't want to change it. Instead, this patch (as1655) adds a module parameter to usbtest, which can be used to override the default altsetting. Since usbtest is never used by normal users (most distributions probably don't even build it), the new module parameter won't inconvenience anybody. In any case, it is entirely optional -- leaving it unset preserves the existing behavior. The patch also fixes a related bug in usbtest: After selecting an altsetting, the driver neglects to store its selection. Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usbtest.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 268148de9714..8b4ca1cb450a 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -11,6 +11,12 @@ #include +/*-------------------------------------------------------------------------*/ + +static int override_alt = -1; +module_param_named(alt, override_alt, int, 0644); +MODULE_PARM_DESC(alt, ">= 0 to override altsetting selection"); + /*-------------------------------------------------------------------------*/ /* FIXME make these public somewhere; usbdevfs.h? */ @@ -103,6 +109,10 @@ get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf) iso_in = iso_out = NULL; alt = intf->altsetting + tmp; + if (override_alt >= 0 && + override_alt != alt->desc.bAlternateSetting) + continue; + /* take the first altsetting with in-bulk + out-bulk; * ignore other endpoints and altsettings. */ @@ -144,6 +154,7 @@ try_iso: found: udev = testdev_to_usbdev(dev); + dev->info->alt = alt->desc.bAlternateSetting; if (alt->desc.bAlternateSetting != 0) { tmp = usb_set_interface(udev, alt->desc.bInterfaceNumber, @@ -2280,7 +2291,7 @@ usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id) wtest = " intr-out"; } } else { - if (info->autoconf) { + if (override_alt >= 0 || info->autoconf) { int status; status = get_endpoints(dev, intf); -- cgit v1.2.3 From 2f0760774711c957c395b31131b848043af98edf Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 30 Jan 2013 16:40:14 -0500 Subject: USB: GADGET: optionally force full-speed for net2280 UDC This patch (as1656) adds a module parameter to the net2280 UDC driver to force full-speed operation. It is intended for testing purposes, where one wants to check how well a full-speed device performs when attached to a high-speed bus. Without this parameter it would be necessary to interpose a full-speed hub; otherwise the net2280 would connect at high speed. Signed-off-by: Alan Stern Acked-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/net2280.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c index 708c0b55dcc8..a1b650e11339 100644 --- a/drivers/usb/gadget/net2280.c +++ b/drivers/usb/gadget/net2280.c @@ -116,6 +116,10 @@ static bool enable_suspend = 0; /* "modprobe net2280 enable_suspend=1" etc */ module_param (enable_suspend, bool, S_IRUGO); +/* force full-speed operation */ +static bool full_speed; +module_param(full_speed, bool, 0444); +MODULE_PARM_DESC(full_speed, "force full-speed mode -- for testing only!"); #define DIR_STRING(bAddress) (((bAddress) & USB_DIR_IN) ? "in" : "out") @@ -1899,6 +1903,10 @@ static int net2280_start(struct usb_gadget *_gadget, retval = device_create_file (&dev->pdev->dev, &dev_attr_queues); if (retval) goto err_func; + /* Enable force-full-speed testing mode, if desired */ + if (full_speed) + writel(1 << FORCE_FULL_SPEED_MODE, &dev->usb->xcvrdiag); + /* ... then enable host detection and ep0; and we're ready * for set_configuration as well as eventual disconnect. */ @@ -1957,6 +1965,10 @@ static int net2280_stop(struct usb_gadget *_gadget, dev->driver = NULL; net2280_led_active (dev, 0); + + /* Disable full-speed test mode */ + writel(0, &dev->usb->xcvrdiag); + device_remove_file (&dev->pdev->dev, &dev_attr_function); device_remove_file (&dev->pdev->dev, &dev_attr_queues); @@ -2841,6 +2853,9 @@ static void net2280_shutdown (struct pci_dev *pdev) /* disable the pullup so the host will think we're gone */ writel (0, &dev->usb->usbctl); + + /* Disable full-speed test mode */ + writel(0, &dev->usb->xcvrdiag); } -- cgit v1.2.3 From b11b2e1bdd18ba5cd0dde075d440b3894e6ce64f Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Sat, 2 Feb 2013 15:57:53 +0800 Subject: drivers/usb/core: using strlcpy instead of strncpy for NUL terminated string, better notice '\0' in the end. Signed-off-by: Chen Gang Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/devio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index b78fbe222b72..4a863fdbdccd 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -40,6 +40,7 @@ #include #include #include +#include #include #include #include /* for usbcore internals */ @@ -1077,7 +1078,7 @@ static int proc_getdriver(struct dev_state *ps, void __user *arg) if (!intf || !intf->dev.driver) ret = -ENODATA; else { - strncpy(gd.driver, intf->dev.driver->name, + strlcpy(gd.driver, intf->dev.driver->name, sizeof(gd.driver)); ret = (copy_to_user(arg, &gd, sizeof(gd)) ? -EFAULT : 0); } -- cgit v1.2.3 From 4d2079c190558dfa9b766a90a34cb30b8d49c8eb Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Sat, 2 Feb 2013 15:48:54 +0800 Subject: drivers/usb/gadget: using strlcpy instead of strncpy for NUL terminated string, better notice '\0' in the end. Signed-off-by: Chen Gang Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/f_uvc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/gadget/f_uvc.c b/drivers/usb/gadget/f_uvc.c index 5b629876941b..92efd6ec48af 100644 --- a/drivers/usb/gadget/f_uvc.c +++ b/drivers/usb/gadget/f_uvc.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -419,7 +420,7 @@ uvc_register_video(struct uvc_device *uvc) video->parent = &cdev->gadget->dev; video->fops = &uvc_v4l2_fops; video->release = video_device_release; - strncpy(video->name, cdev->gadget->name, sizeof(video->name)); + strlcpy(video->name, cdev->gadget->name, sizeof(video->name)); uvc->vdev = video; video_set_drvdata(video, uvc); -- cgit v1.2.3 From f07af4b630d52fb911574031ed7feb9252e65f24 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 1 Feb 2013 15:53:34 +0300 Subject: USB: wusbcore/wa-xfer: error handling fixes in setup_segs() 1) It didn't free xfer->seg[0] so there was a leak. 2) xfer->seg[cnt] can be NULL. 3) Use usb_free_urb() for ->dto_urb instead of kfree(). Signed-off-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman --- drivers/usb/wusbcore/wa-xfer.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c index 57c01ab09ad8..6ef94bce8c0d 100644 --- a/drivers/usb/wusbcore/wa-xfer.c +++ b/drivers/usb/wusbcore/wa-xfer.c @@ -695,9 +695,9 @@ error_dto_alloc: cnt--; error_seg_kzalloc: /* use the fact that cnt is left at were it failed */ - for (; cnt > 0; cnt--) { - if (xfer->is_inbound == 0) - kfree(xfer->seg[cnt]->dto_urb); + for (; cnt >= 0; cnt--) { + if (xfer->seg[cnt] && xfer->is_inbound == 0) + usb_free_urb(xfer->seg[cnt]->dto_urb); kfree(xfer->seg[cnt]); } error_segs_kzalloc: -- cgit v1.2.3 From 9662ced3527f5994e83957cf40765ed126abe97f Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 6 Feb 2013 09:12:14 +0200 Subject: usb: gadget: imx_udc: make it depend on BROKEN that driver hasn't been maintained for quite some time, at least since e08300043e (ARM: imx: dynamically allocate imx_udc device). Because of that, and because driver doesn't even compile with allyesconfig and allmodconfig, we're making it depend on BROKEN. Reported-by: Arnd Bergmann Signed-off-by: Felipe Balbi Acked-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 6665d255d32a..b19c9078ee51 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -281,6 +281,7 @@ config USB_S3C_HSOTG config USB_IMX tristate "Freescale i.MX1 USB Peripheral Controller" depends on ARCH_MXC + depends on BROKEN help Freescale's i.MX1 includes an integrated full speed USB 1.1 device controller. -- cgit v1.2.3 From cd060956c5e97931c3909e4a808508469c0bb9f6 Mon Sep 17 00:00:00 2001 From: fangxiaozhi Date: Thu, 7 Feb 2013 15:32:07 +0800 Subject: USB: storage: properly handle the endian issues of idProduct 1. The idProduct is little endian, so make sure its value to be compatible with the current CPU. Make no break on big endian processors. Signed-off-by: fangxiaozhi Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/initializers.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/storage/initializers.c b/drivers/usb/storage/initializers.c index 16b0bf055eeb..7ab9046ae0ec 100644 --- a/drivers/usb/storage/initializers.c +++ b/drivers/usb/storage/initializers.c @@ -147,7 +147,7 @@ static int usb_stor_huawei_dongles_pid(struct us_data *us) int idProduct; idesc = &us->pusb_intf->cur_altsetting->desc; - idProduct = us->pusb_dev->descriptor.idProduct; + idProduct = le16_to_cpu(us->pusb_dev->descriptor.idProduct); /* The first port is CDROM, * means the dongle in the single port mode, * and a switch command is required to be sent. */ @@ -169,7 +169,7 @@ int usb_stor_huawei_init(struct us_data *us) int result = 0; if (usb_stor_huawei_dongles_pid(us)) { - if (us->pusb_dev->descriptor.idProduct >= 0x1446) + if (le16_to_cpu(us->pusb_dev->descriptor.idProduct) >= 0x1446) result = usb_stor_huawei_scsi_init(us); else result = usb_stor_huawei_feature_init(us); -- cgit v1.2.3 From 5273afe359f700ac28bf8e9d63d733dbe0483e62 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 6 Feb 2013 17:24:01 +0100 Subject: drivers/usb: add missing GENERIC_HARDIRQS dependencies Add a couple of missing GENERIC_HARDIRQS dependencies to fix link errors like below on s390: ERROR: "devm_request_threaded_irq" [drivers/usb/gadget/mv_udc.ko] undefined! Signed-off-by: Heiko Carstens Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/Kconfig | 2 +- drivers/usb/gadget/Kconfig | 3 ++- drivers/usb/host/Kconfig | 2 +- drivers/usb/musb/Kconfig | 1 + drivers/usb/renesas_usbhs/Kconfig | 2 +- 5 files changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index 77e3f40f5cea..68e9a2c5a01a 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -1,6 +1,6 @@ config USB_DWC3 tristate "DesignWare USB3 DRD Core Support" - depends on (USB || USB_GADGET) + depends on (USB || USB_GADGET) && GENERIC_HARDIRQS select USB_OTG_UTILS select USB_XHCI_PLATFORM if USB_SUPPORT && USB_XHCI_HCD help diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index b19c9078ee51..c5c6fa60910d 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -320,6 +320,7 @@ config USB_S3C_HSUDC config USB_MV_UDC tristate "Marvell USB2.0 Device Controller" + depends on GENERIC_HARDIRQS help Marvell Socs (including PXA and MMP series) include a high speed USB2.0 OTG controller, which can be configured as high speed or @@ -441,7 +442,7 @@ config USB_GOKU config USB_EG20T tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7831) UDC" - depends on PCI + depends on PCI && GENERIC_HARDIRQS help This is a USB device driver for EG20T PCH. EG20T PCH is the platform controller hub that is used in Intel's diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 3a21c5d683c0..c59a1126926f 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -246,7 +246,7 @@ config USB_EHCI_ATH79 config USB_OXU210HP_HCD tristate "OXU210HP HCD support" - depends on USB + depends on USB && GENERIC_HARDIRQS ---help--- The OXU210HP is an USB host/OTG/device controller. Enable this option if your board has this chip. If unsure, say N. diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index de6e5ce26316..45b19e2c60ba 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -46,6 +46,7 @@ config USB_MUSB_DA8XX config USB_MUSB_TUSB6010 tristate "TUSB6010" + depends on GENERIC_HARDIRQS config USB_MUSB_OMAP2PLUS tristate "OMAP2430 and onwards" diff --git a/drivers/usb/renesas_usbhs/Kconfig b/drivers/usb/renesas_usbhs/Kconfig index 6f4afa436381..29feb00d7f39 100644 --- a/drivers/usb/renesas_usbhs/Kconfig +++ b/drivers/usb/renesas_usbhs/Kconfig @@ -4,7 +4,7 @@ config USB_RENESAS_USBHS tristate 'Renesas USBHS controller' - depends on USB && USB_GADGET + depends on USB && USB_GADGET && GENERIC_HARDIRQS default n help Renesas USBHS is a discrete USB host and peripheral controller chip -- cgit v1.2.3 From cd565279e51bedee1b2988e84f9b3bef485adeb6 Mon Sep 17 00:00:00 2001 From: Bjørn Mork Date: Tue, 12 Feb 2013 13:42:24 +0100 Subject: USB: option: add Yota / Megafon M100-1 4g modem MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Interface layout: 00 CD-ROM 01 debug COM port 02 AP control port 03 modem 04 usb-ethernet Bus=01 Lev=02 Prnt=02 Port=01 Cnt=02 Dev#= 4 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=0408 ProdID=ea42 Rev= 0.00 S: Manufacturer=Qualcomm, Incorporated S: Product=Qualcomm CDMA Technologies MSM S: SerialNumber=353568051xxxxxx C:* #Ifs= 5 Cfg#= 1 Atr=e0 MxPwr=500mA I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=4ms I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=4ms I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=84(I) Atr=03(Int.) MxPS= 64 Ivl=2ms E: Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=4ms I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=86(I) Atr=03(Int.) MxPS= 64 Ivl=2ms E: Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=4ms Cc: stable Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 868a57d898cf..004f5b0b6e2b 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -576,6 +576,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GLX) }, { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GKE) }, { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GLE) }, + { USB_DEVICE(QUANTA_VENDOR_ID, 0xea42), + .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E173, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t) &net_intf1_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4505, 0xff, 0xff, 0xff), -- cgit v1.2.3 From b2ca699076573c94fee9a73cb0d8645383b602a0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 13 Feb 2013 17:53:28 +0100 Subject: USB: serial: fix null-pointer dereferences on disconnect Make sure serial-driver dtr_rts is called with disc_mutex held after checking the disconnected flag. Due to a bug in the tty layer, dtr_rts may get called after a device has been disconnected and the tty-device unregistered. Some drivers have had individual checks for disconnect to make sure the disconnected interface was not accessed, but this should really be handled in usb-serial core (at least until the long-standing tty-bug has been fixed). Note that the problem has been made more acute with commit 0998d0631001 ("device-core: Ensure drvdata = NULL when no driver is bound") as the port data is now also NULL when dtr_rts is called resulting in further oopses. Reported-by: Chris Ruehl Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 20 +++++++++----------- drivers/usb/serial/mct_u232.c | 22 +++++++++------------- drivers/usb/serial/quatech2.c | 18 ++++++++---------- drivers/usb/serial/sierra.c | 8 +------- drivers/usb/serial/ssu100.c | 19 ++++++++----------- drivers/usb/serial/usb-serial.c | 14 ++++++++++++-- drivers/usb/serial/usb_wwan.c | 8 +++----- 7 files changed, 50 insertions(+), 59 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 90ceef1776c3..d07fccf3bab5 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1886,24 +1886,22 @@ static void ftdi_dtr_rts(struct usb_serial_port *port, int on) { struct ftdi_private *priv = usb_get_serial_port_data(port); - mutex_lock(&port->serial->disc_mutex); - if (!port->serial->disconnected) { - /* Disable flow control */ - if (!on && usb_control_msg(port->serial->dev, + /* Disable flow control */ + if (!on) { + if (usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, 0, priv->interface, NULL, 0, WDR_TIMEOUT) < 0) { - dev_err(&port->dev, "error from flowcontrol urb\n"); + dev_err(&port->dev, "error from flowcontrol urb\n"); } - /* drop RTS and DTR */ - if (on) - set_mctrl(port, TIOCM_DTR | TIOCM_RTS); - else - clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); } - mutex_unlock(&port->serial->disc_mutex); + /* drop RTS and DTR */ + if (on) + set_mctrl(port, TIOCM_DTR | TIOCM_RTS); + else + clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); } /* diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c index b6911757c855..d9c86516fed4 100644 --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -499,19 +499,15 @@ static void mct_u232_dtr_rts(struct usb_serial_port *port, int on) unsigned int control_state; struct mct_u232_private *priv = usb_get_serial_port_data(port); - mutex_lock(&port->serial->disc_mutex); - if (!port->serial->disconnected) { - /* drop DTR and RTS */ - spin_lock_irq(&priv->lock); - if (on) - priv->control_state |= TIOCM_DTR | TIOCM_RTS; - else - priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); - control_state = priv->control_state; - spin_unlock_irq(&priv->lock); - mct_u232_set_modem_ctrl(port, control_state); - } - mutex_unlock(&port->serial->disc_mutex); + spin_lock_irq(&priv->lock); + if (on) + priv->control_state |= TIOCM_DTR | TIOCM_RTS; + else + priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS); + control_state = priv->control_state; + spin_unlock_irq(&priv->lock); + + mct_u232_set_modem_ctrl(port, control_state); } static void mct_u232_close(struct usb_serial_port *port) diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index d152be97d041..a8d5110d4cc5 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -945,19 +945,17 @@ static void qt2_dtr_rts(struct usb_serial_port *port, int on) struct usb_device *dev = port->serial->dev; struct qt2_port_private *port_priv = usb_get_serial_port_data(port); - mutex_lock(&port->serial->disc_mutex); - if (!port->serial->disconnected) { - /* Disable flow control */ - if (!on && qt2_setregister(dev, port_priv->device_port, + /* Disable flow control */ + if (!on) { + if (qt2_setregister(dev, port_priv->device_port, UART_MCR, 0) < 0) dev_warn(&port->dev, "error from flowcontrol urb\n"); - /* drop RTS and DTR */ - if (on) - update_mctrl(port_priv, TIOCM_DTR | TIOCM_RTS, 0); - else - update_mctrl(port_priv, 0, TIOCM_DTR | TIOCM_RTS); } - mutex_unlock(&port->serial->disc_mutex); + /* drop RTS and DTR */ + if (on) + update_mctrl(port_priv, TIOCM_DTR | TIOCM_RTS, 0); + else + update_mctrl(port_priv, 0, TIOCM_DTR | TIOCM_RTS); } static void qt2_update_msr(struct usb_serial_port *port, unsigned char *ch) diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index af06f2f5f38b..d4426c038c32 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -861,19 +861,13 @@ static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port) static void sierra_dtr_rts(struct usb_serial_port *port, int on) { - struct usb_serial *serial = port->serial; struct sierra_port_private *portdata; portdata = usb_get_serial_port_data(port); portdata->rts_state = on; portdata->dtr_state = on; - if (serial->dev) { - mutex_lock(&serial->disc_mutex); - if (!serial->disconnected) - sierra_send_setup(port); - mutex_unlock(&serial->disc_mutex); - } + sierra_send_setup(port); } static int sierra_startup(struct usb_serial *serial) diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c index 4543ea350229..d938396171e8 100644 --- a/drivers/usb/serial/ssu100.c +++ b/drivers/usb/serial/ssu100.c @@ -506,19 +506,16 @@ static void ssu100_dtr_rts(struct usb_serial_port *port, int on) { struct usb_device *dev = port->serial->dev; - mutex_lock(&port->serial->disc_mutex); - if (!port->serial->disconnected) { - /* Disable flow control */ - if (!on && - ssu100_setregister(dev, 0, UART_MCR, 0) < 0) + /* Disable flow control */ + if (!on) { + if (ssu100_setregister(dev, 0, UART_MCR, 0) < 0) dev_err(&port->dev, "error from flowcontrol urb\n"); - /* drop RTS and DTR */ - if (on) - set_mctrl(dev, TIOCM_DTR | TIOCM_RTS); - else - clear_mctrl(dev, TIOCM_DTR | TIOCM_RTS); } - mutex_unlock(&port->serial->disc_mutex); + /* drop RTS and DTR */ + if (on) + set_mctrl(dev, TIOCM_DTR | TIOCM_RTS); + else + clear_mctrl(dev, TIOCM_DTR | TIOCM_RTS); } static void ssu100_update_msr(struct usb_serial_port *port, u8 msr) diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 0a17f5942552..a19ed74d770d 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -694,10 +694,20 @@ static int serial_carrier_raised(struct tty_port *port) static void serial_dtr_rts(struct tty_port *port, int on) { struct usb_serial_port *p = container_of(port, struct usb_serial_port, port); - struct usb_serial_driver *drv = p->serial->type; + struct usb_serial *serial = p->serial; + struct usb_serial_driver *drv = serial->type; - if (drv->dtr_rts) + if (!drv->dtr_rts) + return; + /* + * Work-around bug in the tty-layer which can result in dtr_rts + * being called after a disconnect (and tty_unregister_device + * has returned). Remove once bug has been squashed. + */ + mutex_lock(&serial->disc_mutex); + if (!serial->disconnected) drv->dtr_rts(p, on); + mutex_unlock(&serial->disc_mutex); } static const struct tty_port_operations serial_port_ops = { diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index 01c94aada56c..1355a6cd4508 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -38,7 +38,6 @@ void usb_wwan_dtr_rts(struct usb_serial_port *port, int on) { - struct usb_serial *serial = port->serial; struct usb_wwan_port_private *portdata; struct usb_wwan_intf_private *intfdata; @@ -48,12 +47,11 @@ void usb_wwan_dtr_rts(struct usb_serial_port *port, int on) return; portdata = usb_get_serial_port_data(port); - mutex_lock(&serial->disc_mutex); + /* FIXME: locking */ portdata->rts_state = on; portdata->dtr_state = on; - if (serial->dev) - intfdata->send_setup(port); - mutex_unlock(&serial->disc_mutex); + + intfdata->send_setup(port); } EXPORT_SYMBOL(usb_wwan_dtr_rts); -- cgit v1.2.3 From 1f3f687722fd9b29a0c2a85b4844e3b2a3585c63 Mon Sep 17 00:00:00 2001 From: Bjørn Mork Date: Wed, 13 Feb 2013 23:41:34 +0100 Subject: USB: option: add Huawei "ACM" devices using protocol = vendor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The USB device descriptor of one identity presented by a few Huawei morphing devices have serial functions with class codes 02/02/ff, indicating CDC ACM with a vendor specific protocol. This combination is often used for MSFT RNDIS functions, and the CDC ACM class driver will therefore ignore such functions. The CDC ACM class driver cannot support functions with only 2 endpoints. The underlying serial functions of these modems are also believed to be the same as for alternate device identities already supported by the option driver. Letting the same driver handle these functions independently of the current identity ensures consistent handling and user experience. There is no need to blacklist these devices in the rndis_host driver. Huawei serial functions will either have only 2 endpoints or a CDC ACM functional descriptor with bmCapabilities != 0, making them correctly ignored as "non RNDIS" by that driver. Cc: stable Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 004f5b0b6e2b..f7d339d8187b 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -578,8 +578,12 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GLE) }, { USB_DEVICE(QUANTA_VENDOR_ID, 0xea42), .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1c05, USB_CLASS_COMM, 0x02, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1c23, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E173, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t) &net_intf1_blacklist }, + { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1441, USB_CLASS_COMM, 0x02, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1442, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4505, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3765, 0xff, 0xff, 0xff), -- cgit v1.2.3 From 428525f97153505e83983460a8d08a3210aa6b8a Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Thu, 14 Feb 2013 17:08:08 +0200 Subject: USB: ehci-omap: Don't free gpios that we didn't request This driver does not request any gpios so don't free them. Fixes L3 bus error on multiple modprobe/rmmod of ehci_hcd with ehci-omap in use. Without this patch, EHCI will break on repeated insmod/rmmod of ehci_hcd for all OMAP2+ platforms that use EHCI and set 'phy_reset = true' in usbhs_omap_board_data. i.e. board-3430sdp.c: .phy_reset = true, board-3630sdp.c: .phy_reset = true, board-am3517crane.c: .phy_reset = true, board-am3517evm.c: .phy_reset = true, board-cm-t3517.c: .phy_reset = true, board-cm-t35.c: .phy_reset = true, board-devkit8000.c: .phy_reset = true, board-igep0020.c: .phy_reset = true, board-igep0020.c: .phy_reset = true, board-omap3beagle.c: .phy_reset = true, board-omap3evm.c: .phy_reset = true, board-omap3pandora.c: .phy_reset = true, board-omap3stalker.c: .phy_reset = true, board-omap3touchbook.c: .phy_reset = true, board-omap4panda.c: .phy_reset = false, board-overo.c: .phy_reset = true, board-zoom.c: .phy_reset = true, Cc: stable Signed-off-by: Roger Quadros Reviewed-by: Felipe Balbi Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-omap.c | 8 -------- 1 file changed, 8 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index ac17a7c3a0cd..e9d9b09977e6 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -288,7 +288,6 @@ static int ehci_hcd_omap_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct usb_hcd *hcd = dev_get_drvdata(dev); - struct ehci_hcd_omap_platform_data *pdata = dev->platform_data; usb_remove_hcd(hcd); disable_put_regulator(dev->platform_data); @@ -298,13 +297,6 @@ static int ehci_hcd_omap_remove(struct platform_device *pdev) pm_runtime_put_sync(dev); pm_runtime_disable(dev); - if (pdata->phy_reset) { - if (gpio_is_valid(pdata->reset_gpio_port[0])) - gpio_free(pdata->reset_gpio_port[0]); - - if (gpio_is_valid(pdata->reset_gpio_port[1])) - gpio_free(pdata->reset_gpio_port[1]); - } return 0; } -- cgit v1.2.3 From 04753523266629b1cd0518091da1658755787198 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Thu, 14 Feb 2013 17:08:09 +0200 Subject: USB: ehci-omap: Fix autoloading of module The module alias should be "ehci-omap" and not "omap-ehci" to match the platform device name. The omap-ehci module should now autoload correctly. Signed-off-by: Roger Quadros Acked-by: Alan Stern Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-omap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index e9d9b09977e6..99899e808c6a 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -364,7 +364,7 @@ static const struct hc_driver ehci_omap_hc_driver = { .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; -MODULE_ALIAS("platform:omap-ehci"); +MODULE_ALIAS("platform:ehci-omap"); MODULE_AUTHOR("Texas Instruments, Inc."); MODULE_AUTHOR("Felipe Balbi "); -- cgit v1.2.3 From 18e03310b5caa6d11c1a8c61b982c37047693fba Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Thu, 14 Feb 2013 09:39:09 -0500 Subject: USB: usb-storage: unusual_devs update for Super TOP SATA bridge The current entry in unusual_cypress.h for the Super TOP SATA bridge devices seems to be causing corruption on newer revisions of this device. This has been reported in Arch Linux and Fedora. The original patch was tested on devices with bcdDevice of 1.60, whereas the newer devices report bcdDevice as 2.20. Limit the UNUSUAL_DEV entry to devices less than 2.20. This fixes https://bugzilla.redhat.com/show_bug.cgi?id=909591 The Arch Forum post on this is here: https://bbs.archlinux.org/viewtopic.php?id=152011 Reported-by: Carsten S. Tested-by: Carsten S. Cc: stable Signed-off-by: Josh Boyer Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_cypress.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/storage/unusual_cypress.h b/drivers/usb/storage/unusual_cypress.h index 2c8553026222..65a6a75066a8 100644 --- a/drivers/usb/storage/unusual_cypress.h +++ b/drivers/usb/storage/unusual_cypress.h @@ -31,7 +31,7 @@ UNUSUAL_DEV( 0x04b4, 0x6831, 0x0000, 0x9999, "Cypress ISD-300LP", USB_SC_CYP_ATACB, USB_PR_DEVICE, NULL, 0), -UNUSUAL_DEV( 0x14cd, 0x6116, 0x0000, 0x9999, +UNUSUAL_DEV( 0x14cd, 0x6116, 0x0000, 0x0219, "Super Top", "USB 2.0 SATA BRIDGE", USB_SC_CYP_ATACB, USB_PR_DEVICE, NULL, 0), -- cgit v1.2.3 From d57ada0c37ecf836259c205442c15c7679a6dc3e Mon Sep 17 00:00:00 2001 From: Manjunath Goudar Date: Fri, 15 Feb 2013 23:12:28 +0100 Subject: USB: EHCI: make ehci-vt8500 a separate driver With the multiplatform changes in arm-soc tree, it becomes possible to enable the vt8500 platform at the same time as other platforms that require a conflicting EHCI bus glue. At the moment, this results in a warning like drivers/usb/host/ehci-hcd.c:1277:0: warning: "PLATFORM_DRIVER" redefined [enabled by default] drivers/usb/host/ehci-hcd.c:1257:0: note: this is the location of the previous definition drivers/usb/host/ehci-omap.c:319:31: warning: 'ehci_hcd_omap_driver' defined but not used [-Wunused-variable] and an ehci driver that only works on one of them. With the infrastructure added by Alan Stern in patch 3e0232039 "USB: EHCI: prepare to make ehci-hcd a library module", we can avoid this problem by turning a bus glue into a separate module, as we do here for the vt8500 bus glue. Signed-off-by: Manjunath Goudar Signed-off-by: Arnd Bergmann Acked-by: Tony Prisk Cc: Alexey Charkov Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 8 +++++ drivers/usb/host/Makefile | 1 + drivers/usb/host/ehci-hcd.c | 6 +--- drivers/usb/host/ehci-vt8500.c | 73 +++++++++++++++++++----------------------- 4 files changed, 43 insertions(+), 45 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index c59a1126926f..d77e0286f68b 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -162,6 +162,14 @@ config USB_EHCI_HCD_OMAP Enables support for the on-chip EHCI controller on OMAP3 and later chips. +config USB_EHCI_HCD_VT8500 + tristate "Support for VT8500 on-chip EHCI USB controller" + depends on USB_EHCI_HCD && ARCH_VT8500 + default y + ---help--- + Enables support for the on-chip EHCI controller on + VT8500 chips. + config USB_EHCI_MSM bool "Support for MSM on-chip EHCI USB controller" depends on USB_EHCI_HCD && ARCH_MSM diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 001fbff2fdef..b0da9cf9d035 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -29,6 +29,7 @@ obj-$(CONFIG_USB_EHCI_HCD_PLATFORM) += ehci-platform.o obj-$(CONFIG_USB_EHCI_MXC) += ehci-mxc.o obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o +obj-$(CONFIG_USB_EHCI_HCD_VT8500)+= ehci-vt8500.o obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index b416a3fc9959..487ebb892bc2 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1292,11 +1292,6 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ehci_octeon_driver #endif -#ifdef CONFIG_ARCH_VT8500 -#include "ehci-vt8500.c" -#define PLATFORM_DRIVER vt8500_ehci_driver -#endif - #ifdef CONFIG_PLAT_SPEAR #include "ehci-spear.c" #define PLATFORM_DRIVER spear_ehci_hcd_driver @@ -1347,6 +1342,7 @@ MODULE_LICENSE ("GPL"); !IS_ENABLED(CONFIG_USB_CHIPIDEA_HOST) && \ !IS_ENABLED(CONFIG_USB_EHCI_MXC) && \ !defined(PLATFORM_DRIVER) && \ + !IS_ENABLED(CONFIG_ARCH_VT8500) && \ !defined(PS3_SYSTEM_BUS_DRIVER) && \ !defined(OF_PLATFORM_DRIVER) && \ !defined(XILINX_OF_PLATFORM_DRIVER) diff --git a/drivers/usb/host/ehci-vt8500.c b/drivers/usb/host/ehci-vt8500.c index 11695d5b9d86..98d65bdcb969 100644 --- a/drivers/usb/host/ehci-vt8500.c +++ b/drivers/usb/host/ehci-vt8500.c @@ -16,52 +16,25 @@ * */ +#include +#include +#include +#include +#include +#include #include #include -static const struct hc_driver vt8500_ehci_hc_driver = { - .description = hcd_name, - .product_desc = "VT8500 EHCI", - .hcd_priv_size = sizeof(struct ehci_hcd), +#include "ehci.h" - /* - * generic hardware linkage - */ - .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, - - /* - * basic lifecycle operations - */ - .reset = ehci_setup, - .start = ehci_run, - .stop = ehci_stop, - .shutdown = ehci_shutdown, +#define DRIVER_DESC "vt8500 On-Chip EHCI Host driver" - /* - * managing i/o requests and associated device resources - */ - .urb_enqueue = ehci_urb_enqueue, - .urb_dequeue = ehci_urb_dequeue, - .endpoint_disable = ehci_endpoint_disable, - .endpoint_reset = ehci_endpoint_reset, +static const char hcd_name[] = "ehci-vt8500"; - /* - * scheduling support - */ - .get_frame_number = ehci_get_frame, +static struct hc_driver __read_mostly vt8500_ehci_hc_driver; - /* - * root hub support - */ - .hub_status_data = ehci_hub_status_data, - .hub_control = ehci_hub_control, - .bus_suspend = ehci_bus_suspend, - .bus_resume = ehci_bus_resume, - .relinquish_port = ehci_relinquish_port, - .port_handed_over = ehci_port_handed_over, - - .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, +static const struct ehci_driver_overrides ehci_vt8500_overrides __initdata = { + .reset = ehci_setup, }; static u64 vt8500_ehci_dma_mask = DMA_BIT_MASK(32); @@ -140,11 +113,31 @@ static struct platform_driver vt8500_ehci_driver = { .remove = vt8500_ehci_drv_remove, .shutdown = usb_hcd_platform_shutdown, .driver = { - .name = "vt8500-ehci", + .name = hcd_name, .owner = THIS_MODULE, .of_match_table = of_match_ptr(vt8500_ehci_ids), } }; +static int __init ehci_vt8500_init(void) +{ + if (usb_disabled()) + return -ENODEV; + + pr_info("%s: " DRIVER_DESC "\n", hcd_name); + ehci_init_driver(&vt8500_ehci_hc_driver, &ehci_vt8500_overrides); + return platform_driver_register(&vt8500_ehci_driver); +} +module_init(ehci_vt8500_init); + +static void __exit ehci_vt8500_cleanup(void) +{ + platform_driver_unregister(&vt8500_ehci_driver); +} +module_exit(ehci_vt8500_cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Alexey Charkov"); +MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:vt8500-ehci"); MODULE_DEVICE_TABLE(of, vt8500_ehci_ids); -- cgit v1.2.3 From 6ed3c43d05f6d0d55f17947bc287f35318fd96f8 Mon Sep 17 00:00:00 2001 From: Manjunath Goudar Date: Fri, 15 Feb 2013 23:12:29 +0100 Subject: USB: EHCI: make ehci-orion a separate driver With the multiplatform changes in arm-soc tree, it becomes possible to enable the mvebu platform (which uses ehci-orion) at the same time as other platforms that require a conflicting EHCI bus glue. At the moment, this results in a warning like drivers/usb/host/ehci-hcd.c:1297:0: warning: "PLATFORM_DRIVER" redefined [enabled by default] drivers/usb/host/ehci-hcd.c:1277:0: note: this is the location of the previous definition drivers/usb/host/ehci-orion.c:334:31: warning: 'ehci_orion_driver' defined but not used [-Wunused-variable] and an ehci driver that only works on one of them. With the infrastructure added by Alan Stern in patch 3e0232039 "USB: EHCI: prepare to make ehci-hcd a library module", we can avoid this problem by turning a bus glue into a separate module, as we do here for the orion bus glue. Signed-off-by: Manjunath Goudar Signed-off-by: Arnd Bergmann Cc: Jason Cooper Cc: Andrew Lunn Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 8 ++++ drivers/usb/host/Makefile | 1 + drivers/usb/host/ehci-hcd.c | 6 +-- drivers/usb/host/ehci-orion.c | 90 ++++++++++++++++++++----------------------- 4 files changed, 52 insertions(+), 53 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index d77e0286f68b..7ac6f482e36f 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -162,6 +162,14 @@ config USB_EHCI_HCD_OMAP Enables support for the on-chip EHCI controller on OMAP3 and later chips. +config USB_EHCI_HCD_ORION + tristate "Support for Marvell Orion on-chip EHCI USB controller" + depends on USB_EHCI_HCD && PLAT_ORION + default y + ---help--- + Enables support for the on-chip EHCI controller on + Morvell Orion chips. + config USB_EHCI_HCD_VT8500 tristate "Support for VT8500 on-chip EHCI USB controller" depends on USB_EHCI_HCD && ARCH_VT8500 diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index b0da9cf9d035..4db3f01fec28 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_USB_EHCI_MXC) += ehci-mxc.o obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o obj-$(CONFIG_USB_EHCI_HCD_VT8500)+= ehci-vt8500.o +obj-$(CONFIG_USB_EHCI_HCD_ORION)+= ehci-orion.o obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 487ebb892bc2..26154f025a21 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1272,11 +1272,6 @@ MODULE_LICENSE ("GPL"); #define XILINX_OF_PLATFORM_DRIVER ehci_hcd_xilinx_of_driver #endif -#ifdef CONFIG_PLAT_ORION -#include "ehci-orion.c" -#define PLATFORM_DRIVER ehci_orion_driver -#endif - #ifdef CONFIG_USB_W90X900_EHCI #include "ehci-w90x900.c" #define PLATFORM_DRIVER ehci_hcd_w90x900_driver @@ -1343,6 +1338,7 @@ MODULE_LICENSE ("GPL"); !IS_ENABLED(CONFIG_USB_EHCI_MXC) && \ !defined(PLATFORM_DRIVER) && \ !IS_ENABLED(CONFIG_ARCH_VT8500) && \ + !IS_ENABLED(CONFIG_PLAT_ORION) && \ !defined(PS3_SYSTEM_BUS_DRIVER) && \ !defined(OF_PLATFORM_DRIVER) && \ !defined(XILINX_OF_PLATFORM_DRIVER) diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index 914a3ecfb5d3..cfc4803da3f3 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -17,6 +17,13 @@ #include #include #include +#include +#include +#include +#include + +#include "ehci.h" + #define rdl(off) __raw_readl(hcd->regs + (off)) #define wrl(off, val) __raw_writel((val), hcd->regs + (off)) @@ -34,6 +41,17 @@ #define USB_PHY_IVREF_CTRL 0x440 #define USB_PHY_TST_GRP_CTRL 0x450 +#define DRIVER_DESC "EHCI orion driver" + +static const char hcd_name[] = "ehci-orion"; + +static struct hc_driver __read_mostly ehci_orion_hc_driver; + +static const struct ehci_driver_overrides orion_overrides __initdata = { + .reset = ehci_setup, +}; + + /* * Implement Orion USB controller specification guidelines */ @@ -104,51 +122,6 @@ static void orion_usb_phy_v1_setup(struct usb_hcd *hcd) wrl(USB_MODE, 0x13); } -static const struct hc_driver ehci_orion_hc_driver = { - .description = hcd_name, - .product_desc = "Marvell Orion EHCI", - .hcd_priv_size = sizeof(struct ehci_hcd), - - /* - * generic hardware linkage - */ - .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, - - /* - * basic lifecycle operations - */ - .reset = ehci_setup, - .start = ehci_run, - .stop = ehci_stop, - .shutdown = ehci_shutdown, - - /* - * managing i/o requests and associated device resources - */ - .urb_enqueue = ehci_urb_enqueue, - .urb_dequeue = ehci_urb_dequeue, - .endpoint_disable = ehci_endpoint_disable, - .endpoint_reset = ehci_endpoint_reset, - - /* - * scheduling support - */ - .get_frame_number = ehci_get_frame, - - /* - * root hub support - */ - .hub_status_data = ehci_hub_status_data, - .hub_control = ehci_hub_control, - .bus_suspend = ehci_bus_suspend, - .bus_resume = ehci_bus_resume, - .relinquish_port = ehci_relinquish_port, - .port_handed_over = ehci_port_handed_over, - - .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, -}; - static void ehci_orion_conf_mbus_windows(struct usb_hcd *hcd, const struct mbus_dram_target_info *dram) @@ -323,8 +296,6 @@ static int __exit ehci_orion_drv_remove(struct platform_device *pdev) return 0; } -MODULE_ALIAS("platform:orion-ehci"); - static const struct of_device_id ehci_orion_dt_ids[] = { { .compatible = "marvell,orion-ehci", }, {}, @@ -336,8 +307,31 @@ static struct platform_driver ehci_orion_driver = { .remove = __exit_p(ehci_orion_drv_remove), .shutdown = usb_hcd_platform_shutdown, .driver = { - .name = "orion-ehci", + .name = hcd_name, .owner = THIS_MODULE, .of_match_table = of_match_ptr(ehci_orion_dt_ids), }, }; + +static int __init ehci_orion_init(void) +{ + if (usb_disabled()) + return -ENODEV; + + pr_info("%s: " DRIVER_DESC "\n", hcd_name); + + ehci_init_driver(&ehci_orion_hc_driver, &orion_overrides); + return platform_driver_register(&ehci_orion_driver); +} +module_init(ehci_orion_init); + +static void __exit ehci_orion_cleanup(void) +{ + platform_driver_unregister(&ehci_orion_driver); +} +module_exit(ehci_orion_cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_ALIAS("platform:ehci-orion"); +MODULE_AUTHOR("Tzachi Perelstein"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From e2ced16661b807b0a5db4f00000eaeb21da4b251 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Sat, 16 Feb 2013 23:03:47 +0000 Subject: USB: update host controller Kconfig entries The recent patches from Manjunath Goudar introduced two small mistakes in the Kconfig help text for the new options. Let's fix those and the other entries that have become stale over time. Signed-off-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 7ac6f482e36f..a405190a72ae 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -163,23 +163,28 @@ config USB_EHCI_HCD_OMAP OMAP3 and later chips. config USB_EHCI_HCD_ORION - tristate "Support for Marvell Orion on-chip EHCI USB controller" + tristate "Support for Marvell EBU on-chip EHCI USB controller" depends on USB_EHCI_HCD && PLAT_ORION default y ---help--- Enables support for the on-chip EHCI controller on - Morvell Orion chips. + Marvell's embedded ARM SoCs, including Orion, + Kirkwood, Dove, Armada XP, Armada 370. + This is different from the EHCI implementation on + Marvell's mobile PXA and MMP SoC, see USB_EHCI_MV + for those. + config USB_EHCI_HCD_VT8500 - tristate "Support for VT8500 on-chip EHCI USB controller" + tristate "Support for VIA/Wondermedia on-chip EHCI USB controller" depends on USB_EHCI_HCD && ARCH_VT8500 default y ---help--- Enables support for the on-chip EHCI controller on - VT8500 chips. + VIA VT8500 and Wondermedia WM8x50 chips. config USB_EHCI_MSM - bool "Support for MSM on-chip EHCI USB controller" + bool "Support for Qualcomm QSD/MSM on-chip EHCI USB controller" depends on USB_EHCI_HCD && ARCH_MSM select USB_EHCI_ROOT_HUB_TT select USB_MSM_OTG @@ -215,10 +220,11 @@ config USB_EHCI_SH If you use the PCI EHCI controller, this option is not necessary. config USB_EHCI_S5P - boolean "S5P EHCI support" - depends on USB_EHCI_HCD && PLAT_S5P - help - Enable support for the S5P SOC's on-chip EHCI controller. + boolean "EHCI support for Samsung S5P/EXYNOS SoC Series" + depends on USB_EHCI_HCD && PLAT_S5P + help + Enable support for the Samsung S5Pxxxx and Exynos3/4/5 SOC's + on-chip EHCI controller. config USB_EHCI_MV bool "EHCI support for Marvell on-chip controller" @@ -228,6 +234,8 @@ config USB_EHCI_MV Enables support for Marvell (including PXA and MMP series) on-chip USB SPH and OTG controller. SPH is a single port host, and it can only be EHCI host. OTG is controller that can switch to host mode. + Note that there is a separate driver for Marvell's embedded ARM + SoCs, see USB_EHCI_HCD_ORION for those. config USB_W90X900_EHCI bool "W90X900(W90P910) EHCI support" -- cgit v1.2.3 From e9a92b2b3704736e6f83abd1613edd499e16185f Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 20 Feb 2013 10:25:05 -0800 Subject: Revert "USB: update host controller Kconfig entries" This reverts commit e2ced16661b807b0a5db4f00000eaeb21da4b251. All of these are wrong, and need to be removed for now until they can get reworked properly. Cc: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 26 +++++++++----------------- 1 file changed, 9 insertions(+), 17 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index a405190a72ae..7ac6f482e36f 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -163,28 +163,23 @@ config USB_EHCI_HCD_OMAP OMAP3 and later chips. config USB_EHCI_HCD_ORION - tristate "Support for Marvell EBU on-chip EHCI USB controller" + tristate "Support for Marvell Orion on-chip EHCI USB controller" depends on USB_EHCI_HCD && PLAT_ORION default y ---help--- Enables support for the on-chip EHCI controller on - Marvell's embedded ARM SoCs, including Orion, - Kirkwood, Dove, Armada XP, Armada 370. - This is different from the EHCI implementation on - Marvell's mobile PXA and MMP SoC, see USB_EHCI_MV - for those. - + Morvell Orion chips. config USB_EHCI_HCD_VT8500 - tristate "Support for VIA/Wondermedia on-chip EHCI USB controller" + tristate "Support for VT8500 on-chip EHCI USB controller" depends on USB_EHCI_HCD && ARCH_VT8500 default y ---help--- Enables support for the on-chip EHCI controller on - VIA VT8500 and Wondermedia WM8x50 chips. + VT8500 chips. config USB_EHCI_MSM - bool "Support for Qualcomm QSD/MSM on-chip EHCI USB controller" + bool "Support for MSM on-chip EHCI USB controller" depends on USB_EHCI_HCD && ARCH_MSM select USB_EHCI_ROOT_HUB_TT select USB_MSM_OTG @@ -220,11 +215,10 @@ config USB_EHCI_SH If you use the PCI EHCI controller, this option is not necessary. config USB_EHCI_S5P - boolean "EHCI support for Samsung S5P/EXYNOS SoC Series" - depends on USB_EHCI_HCD && PLAT_S5P - help - Enable support for the Samsung S5Pxxxx and Exynos3/4/5 SOC's - on-chip EHCI controller. + boolean "S5P EHCI support" + depends on USB_EHCI_HCD && PLAT_S5P + help + Enable support for the S5P SOC's on-chip EHCI controller. config USB_EHCI_MV bool "EHCI support for Marvell on-chip controller" @@ -234,8 +228,6 @@ config USB_EHCI_MV Enables support for Marvell (including PXA and MMP series) on-chip USB SPH and OTG controller. SPH is a single port host, and it can only be EHCI host. OTG is controller that can switch to host mode. - Note that there is a separate driver for Marvell's embedded ARM - SoCs, see USB_EHCI_HCD_ORION for those. config USB_W90X900_EHCI bool "W90X900(W90P910) EHCI support" -- cgit v1.2.3 From 04867125e154fdc6dc88024b49557c30adde2502 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 20 Feb 2013 10:25:44 -0800 Subject: Revert "USB: EHCI: make ehci-orion a separate driver" This reverts commit 6ed3c43d05f6d0d55f17947bc287f35318fd96f8. All of these are wrong, and need to be reverted for now. Cc: Manjunath Goudar Cc: Arnd Bergmann Cc: Jason Cooper Cc: Andrew Lunn Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 8 ---- drivers/usb/host/Makefile | 1 - drivers/usb/host/ehci-hcd.c | 6 ++- drivers/usb/host/ehci-orion.c | 90 +++++++++++++++++++++++-------------------- 4 files changed, 53 insertions(+), 52 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 7ac6f482e36f..d77e0286f68b 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -162,14 +162,6 @@ config USB_EHCI_HCD_OMAP Enables support for the on-chip EHCI controller on OMAP3 and later chips. -config USB_EHCI_HCD_ORION - tristate "Support for Marvell Orion on-chip EHCI USB controller" - depends on USB_EHCI_HCD && PLAT_ORION - default y - ---help--- - Enables support for the on-chip EHCI controller on - Morvell Orion chips. - config USB_EHCI_HCD_VT8500 tristate "Support for VT8500 on-chip EHCI USB controller" depends on USB_EHCI_HCD && ARCH_VT8500 diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 4db3f01fec28..b0da9cf9d035 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -30,7 +30,6 @@ obj-$(CONFIG_USB_EHCI_MXC) += ehci-mxc.o obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o obj-$(CONFIG_USB_EHCI_HCD_VT8500)+= ehci-vt8500.o -obj-$(CONFIG_USB_EHCI_HCD_ORION)+= ehci-orion.o obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 26154f025a21..487ebb892bc2 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1272,6 +1272,11 @@ MODULE_LICENSE ("GPL"); #define XILINX_OF_PLATFORM_DRIVER ehci_hcd_xilinx_of_driver #endif +#ifdef CONFIG_PLAT_ORION +#include "ehci-orion.c" +#define PLATFORM_DRIVER ehci_orion_driver +#endif + #ifdef CONFIG_USB_W90X900_EHCI #include "ehci-w90x900.c" #define PLATFORM_DRIVER ehci_hcd_w90x900_driver @@ -1338,7 +1343,6 @@ MODULE_LICENSE ("GPL"); !IS_ENABLED(CONFIG_USB_EHCI_MXC) && \ !defined(PLATFORM_DRIVER) && \ !IS_ENABLED(CONFIG_ARCH_VT8500) && \ - !IS_ENABLED(CONFIG_PLAT_ORION) && \ !defined(PS3_SYSTEM_BUS_DRIVER) && \ !defined(OF_PLATFORM_DRIVER) && \ !defined(XILINX_OF_PLATFORM_DRIVER) diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index cfc4803da3f3..914a3ecfb5d3 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -17,13 +17,6 @@ #include #include #include -#include -#include -#include -#include - -#include "ehci.h" - #define rdl(off) __raw_readl(hcd->regs + (off)) #define wrl(off, val) __raw_writel((val), hcd->regs + (off)) @@ -41,17 +34,6 @@ #define USB_PHY_IVREF_CTRL 0x440 #define USB_PHY_TST_GRP_CTRL 0x450 -#define DRIVER_DESC "EHCI orion driver" - -static const char hcd_name[] = "ehci-orion"; - -static struct hc_driver __read_mostly ehci_orion_hc_driver; - -static const struct ehci_driver_overrides orion_overrides __initdata = { - .reset = ehci_setup, -}; - - /* * Implement Orion USB controller specification guidelines */ @@ -122,6 +104,51 @@ static void orion_usb_phy_v1_setup(struct usb_hcd *hcd) wrl(USB_MODE, 0x13); } +static const struct hc_driver ehci_orion_hc_driver = { + .description = hcd_name, + .product_desc = "Marvell Orion EHCI", + .hcd_priv_size = sizeof(struct ehci_hcd), + + /* + * generic hardware linkage + */ + .irq = ehci_irq, + .flags = HCD_MEMORY | HCD_USB2, + + /* + * basic lifecycle operations + */ + .reset = ehci_setup, + .start = ehci_run, + .stop = ehci_stop, + .shutdown = ehci_shutdown, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = ehci_urb_enqueue, + .urb_dequeue = ehci_urb_dequeue, + .endpoint_disable = ehci_endpoint_disable, + .endpoint_reset = ehci_endpoint_reset, + + /* + * scheduling support + */ + .get_frame_number = ehci_get_frame, + + /* + * root hub support + */ + .hub_status_data = ehci_hub_status_data, + .hub_control = ehci_hub_control, + .bus_suspend = ehci_bus_suspend, + .bus_resume = ehci_bus_resume, + .relinquish_port = ehci_relinquish_port, + .port_handed_over = ehci_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, +}; + static void ehci_orion_conf_mbus_windows(struct usb_hcd *hcd, const struct mbus_dram_target_info *dram) @@ -296,6 +323,8 @@ static int __exit ehci_orion_drv_remove(struct platform_device *pdev) return 0; } +MODULE_ALIAS("platform:orion-ehci"); + static const struct of_device_id ehci_orion_dt_ids[] = { { .compatible = "marvell,orion-ehci", }, {}, @@ -307,31 +336,8 @@ static struct platform_driver ehci_orion_driver = { .remove = __exit_p(ehci_orion_drv_remove), .shutdown = usb_hcd_platform_shutdown, .driver = { - .name = hcd_name, + .name = "orion-ehci", .owner = THIS_MODULE, .of_match_table = of_match_ptr(ehci_orion_dt_ids), }, }; - -static int __init ehci_orion_init(void) -{ - if (usb_disabled()) - return -ENODEV; - - pr_info("%s: " DRIVER_DESC "\n", hcd_name); - - ehci_init_driver(&ehci_orion_hc_driver, &orion_overrides); - return platform_driver_register(&ehci_orion_driver); -} -module_init(ehci_orion_init); - -static void __exit ehci_orion_cleanup(void) -{ - platform_driver_unregister(&ehci_orion_driver); -} -module_exit(ehci_orion_cleanup); - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_ALIAS("platform:ehci-orion"); -MODULE_AUTHOR("Tzachi Perelstein"); -MODULE_LICENSE("GPL"); -- cgit v1.2.3 From 6166805c3de539a41cfcae39026c5bc273d7c6aa Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 20 Feb 2013 10:26:31 -0800 Subject: Revert "USB: EHCI: make ehci-vt8500 a separate driver" This reverts commit d57ada0c37ecf836259c205442c15c7679a6dc3e. All of these are wrong and need to be reverted for now. Cc: Manjunath Goudar Cc: Arnd Bergmann Cc: Tony Prisk Cc: Alexey Charkov Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/Kconfig | 8 ----- drivers/usb/host/Makefile | 1 - drivers/usb/host/ehci-hcd.c | 6 +++- drivers/usb/host/ehci-vt8500.c | 73 +++++++++++++++++++++++------------------- 4 files changed, 45 insertions(+), 43 deletions(-) (limited to 'drivers') diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index d77e0286f68b..c59a1126926f 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -162,14 +162,6 @@ config USB_EHCI_HCD_OMAP Enables support for the on-chip EHCI controller on OMAP3 and later chips. -config USB_EHCI_HCD_VT8500 - tristate "Support for VT8500 on-chip EHCI USB controller" - depends on USB_EHCI_HCD && ARCH_VT8500 - default y - ---help--- - Enables support for the on-chip EHCI controller on - VT8500 chips. - config USB_EHCI_MSM bool "Support for MSM on-chip EHCI USB controller" depends on USB_EHCI_HCD && ARCH_MSM diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index b0da9cf9d035..001fbff2fdef 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -29,7 +29,6 @@ obj-$(CONFIG_USB_EHCI_HCD_PLATFORM) += ehci-platform.o obj-$(CONFIG_USB_EHCI_MXC) += ehci-mxc.o obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o -obj-$(CONFIG_USB_EHCI_HCD_VT8500)+= ehci-vt8500.o obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 487ebb892bc2..b416a3fc9959 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1292,6 +1292,11 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ehci_octeon_driver #endif +#ifdef CONFIG_ARCH_VT8500 +#include "ehci-vt8500.c" +#define PLATFORM_DRIVER vt8500_ehci_driver +#endif + #ifdef CONFIG_PLAT_SPEAR #include "ehci-spear.c" #define PLATFORM_DRIVER spear_ehci_hcd_driver @@ -1342,7 +1347,6 @@ MODULE_LICENSE ("GPL"); !IS_ENABLED(CONFIG_USB_CHIPIDEA_HOST) && \ !IS_ENABLED(CONFIG_USB_EHCI_MXC) && \ !defined(PLATFORM_DRIVER) && \ - !IS_ENABLED(CONFIG_ARCH_VT8500) && \ !defined(PS3_SYSTEM_BUS_DRIVER) && \ !defined(OF_PLATFORM_DRIVER) && \ !defined(XILINX_OF_PLATFORM_DRIVER) diff --git a/drivers/usb/host/ehci-vt8500.c b/drivers/usb/host/ehci-vt8500.c index 98d65bdcb969..11695d5b9d86 100644 --- a/drivers/usb/host/ehci-vt8500.c +++ b/drivers/usb/host/ehci-vt8500.c @@ -16,25 +16,52 @@ * */ -#include -#include -#include -#include -#include -#include #include #include -#include "ehci.h" +static const struct hc_driver vt8500_ehci_hc_driver = { + .description = hcd_name, + .product_desc = "VT8500 EHCI", + .hcd_priv_size = sizeof(struct ehci_hcd), -#define DRIVER_DESC "vt8500 On-Chip EHCI Host driver" + /* + * generic hardware linkage + */ + .irq = ehci_irq, + .flags = HCD_MEMORY | HCD_USB2, + + /* + * basic lifecycle operations + */ + .reset = ehci_setup, + .start = ehci_run, + .stop = ehci_stop, + .shutdown = ehci_shutdown, -static const char hcd_name[] = "ehci-vt8500"; + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = ehci_urb_enqueue, + .urb_dequeue = ehci_urb_dequeue, + .endpoint_disable = ehci_endpoint_disable, + .endpoint_reset = ehci_endpoint_reset, -static struct hc_driver __read_mostly vt8500_ehci_hc_driver; + /* + * scheduling support + */ + .get_frame_number = ehci_get_frame, -static const struct ehci_driver_overrides ehci_vt8500_overrides __initdata = { - .reset = ehci_setup, + /* + * root hub support + */ + .hub_status_data = ehci_hub_status_data, + .hub_control = ehci_hub_control, + .bus_suspend = ehci_bus_suspend, + .bus_resume = ehci_bus_resume, + .relinquish_port = ehci_relinquish_port, + .port_handed_over = ehci_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; static u64 vt8500_ehci_dma_mask = DMA_BIT_MASK(32); @@ -113,31 +140,11 @@ static struct platform_driver vt8500_ehci_driver = { .remove = vt8500_ehci_drv_remove, .shutdown = usb_hcd_platform_shutdown, .driver = { - .name = hcd_name, + .name = "vt8500-ehci", .owner = THIS_MODULE, .of_match_table = of_match_ptr(vt8500_ehci_ids), } }; -static int __init ehci_vt8500_init(void) -{ - if (usb_disabled()) - return -ENODEV; - - pr_info("%s: " DRIVER_DESC "\n", hcd_name); - ehci_init_driver(&vt8500_ehci_hc_driver, &ehci_vt8500_overrides); - return platform_driver_register(&vt8500_ehci_driver); -} -module_init(ehci_vt8500_init); - -static void __exit ehci_vt8500_cleanup(void) -{ - platform_driver_unregister(&vt8500_ehci_driver); -} -module_exit(ehci_vt8500_cleanup); - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_AUTHOR("Alexey Charkov"); -MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:vt8500-ehci"); MODULE_DEVICE_TABLE(of, vt8500_ehci_ids); -- cgit v1.2.3