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2013-12-17usb: gadget: add "maxpacket_limit" field to struct usb_epRobert Baldyga29-61/+73
This patch adds "maxpacket_limit" to struct usb_ep. This field contains maximum value of maxpacket supported by driver, and is set in driver probe. This value should be used by autoconfig() function, because value of field "maxpacket" is set to value from endpoint descriptor when endpoint becomes enabled. So when autoconfig() function will be called again for this endpoint, "maxpacket" value will contain wMaxPacketSize from descriptior instead of maximum packet size for this endpoint. For this reason this patch adds new field "maxpacket_limit" which contains value of maximum packet size (which defines maximum endpoint capabilities). This value is used in ep_matches() function used by autoconfig(). Value of "maxpacket_limit" should be set in UDC driver probe function, using usb_ep_set_maxpacket_limit() function, defined in gadget.h. This function set choosen value to both "maxpacket_limit" and "maxpacket" fields. This patch modifies UDC drivers by adding support for maxpacket_limit. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: f_fs: fix sparse warningFelipe Balbi1-1/+1
use NULL when returning NULL pointers, not 0. Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: FunctionFS: add configfs supportAndrzej Pietrasiewicz3-1/+94
Add support for using FunctionFS in configfs-based USB gadgets. [ balbi@ti.com : removed redefinition of VERBOSE_DEBUG and few trailing whitespaces ] Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: FunctionFS: Remove compatibility layerAndrzej Pietrasiewicz2-116/+0
There are no old function interface users left, so the old interface can be removed. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: g_ffs: convert to new interface of f_fsAndrzej Pietrasiewicz2-56/+96
Prepare for configfs integration. Use the new interface so that f_fs can be made a module. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: FunctionFS: convert to new function interface with backward ↵Andrzej Pietrasiewicz5-209/+433
compatibility This is required in order to integrate configfs support. f_fs needs to be a separately compiled module and so it needs to use the new interface. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: FunctionFS: add devices management codeAndrzej Pietrasiewicz3-123/+314
This will be required in order to use the new function interface (usb_get_function_instance/usb_put_function_instance) Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyunmgin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: FunctionFS: create utility fileAndrzej Pietrasiewicz3-13/+35
A header file to be used by f_fs.c and g_ffs.c will be required when f_fs.c is converted into a module. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: FunctionFS: Remove VLAIS usage from gadget codeAndrzej Pietrasiewicz1-40/+76
The use of variable length arrays in structs (VLAIS) in the Linux Kernel code precludes the use of compilers which don't implement VLAIS (for instance the Clang compiler). This alternate patch calculates offsets into the kmalloc-ed memory buffer using macros. The previous patch required multiple kmalloc and kfree calls. This version uses "group" vs "struct" since it really is not a struct and is essentially a group of VLA in a common allocated block. This version also fixes the issues pointed out by Andrzej Pietrasiewicz and Michal Nazarewicz. Signed-off-by: Mark Charlebois <charlebm@gmail.com> Signed-off-by: Behan Webster <behanw@converseincode.com> [elimination of miexed declaration and code, checkpatch cleanup] [fixes after Michal's review] Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: rndis: merge u_rndis.ko with usb_f_rndis.koAndrzej Pietrasiewicz5-16/+26
The rndis function's users use only the new interface, so the two modules can be merged. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: f_rndis: remove compatibility layerAndrzej Pietrasiewicz2-107/+1
There are no old function interface users left, so the old interface can be removed. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: g_ffs: convert to new interface of f_rndisAndrzej Pietrasiewicz2-40/+66
There is a new interface of f_rndis and g_ffs is the last to use the old one. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: f_subset: remove compatibility layerAndrzej Pietrasiewicz2-62/+1
There are no old function interface users left, so the old interface can be removed. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: g_ffs: convert to new interface of f_subsetAndrzej Pietrasiewicz2-22/+48
There is a new function interface of f_subset and g_ffs is the last to use the old one. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: f_ecm: remove compatibility layerAndrzej Pietrasiewicz2-74/+1
There are no old function interface users left, so the old interface can be removed. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmim Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: g_ffs: convert to new interface of f_ecmAndrzej Pietrasiewicz2-14/+80
There is a new funtion interface and g_ffs is the last gadget to use the old. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: g_ffs: remove a reduntant gfs_ether_setup variableAndrzej Pietrasiewicz1-8/+5
Since d6a0143985489e470a118605352f4b18df0ce142 usb: gadget: move the global the_dev variable to their users "the_dev" variable can be used as a "setup done" flag; non-NULL meaning "setup done", NULL meaning "setup not done". Moreover, gether_cleanup() can be safely called with a NULL argument. Corrected a comment to be consistent with the code. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: configfs: allow setting function instance's nameAndrzej Pietrasiewicz1-0/+7
USB function's configfs config group is created in a generic way in usb/gadget/configfs.c:function_make(), which in turn delegates actual allocation and setup of the USB function instance to a particular implementation, e.g. in f_acm.c. The said implementation does its job in a parameter-less function e.g. acm_alloc_instance(), which results in creating an unnamed config group, whose name is set later in function_make(). function_make() creates the name by parsing a string of the form: <function name>.<instance name> which comes from userspace as a parameter to mkdir invocation. Up to now only <function name> has been used, while <instance name> has been ignored. This patch adds a set_inst_name() operation to struct usb_function_instance which allows passing the <instance name> from function_make() so that it is not ignored. It is entirely up to the implementor of set_inst_name() what to do with the <instance name>. In a typical case, the struct usb_function_instance is embedded in a larger struct which is retrieved in set_inst_name() with container_of(), and the larger struct contains a field to store the <instance name>. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: s3c-hsotg: add flush TX FIFO when kill all requestsRobert Baldyga1-0/+3
This patch adds flushing TX FIFO in kill_all_requests() function in dedicated-fifo mode. It's because when requests are killed (when endpoint is disabled or in case of device reset/disconnection) in FIFO can stay some unsent data. In the worst case FIFO can stay full, and then if endpoint will be back enabled, sending new data will be impossible. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: gadget: s3c-hsotg: fix maxpacket size in s3c_hsotg_irq_enumdoneRobert Baldyga1-2/+2
This patch set maximum possible maxpacket value for each speed. Previous values didn't allow to use maxpacket sizes greater than 64 in full speed and 512 in high speed, although hardware is able to handle up to 1023 in fs and 1024 in hs. Tested-by: Matt Porter <mporter@linaro.org> Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: phy: initialize the notifier when add a new phyNeil Zhang5-7/+4
We need to initialize the notifer before use it. So lets initialize it when add a new phy device to reduce the code redundancy. Signed-off-by: Neil Zhang <zhangwm@marvell.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: renesas_usbhs: fifo: request DMAEngine onceKuninori Morimoto1-14/+4
DMAEngine uses IRQ if dma_request_channel() was called, and it is using devm_request_irq() today, OTOH, dma_request_channel() will be called when each USB connection happened on this driver. This means same IRQ will be requested many times whenever each USB connected, and this IRQ isn't freed when USB disconnected. Request DMAEngine once. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: phy: add Keystone usb phy driverWingMan Kwok3-0/+152
Add Keystone platform USB PHY driver support. Current main purpose of this driver is to enable the PHY reference clock gate on the Keystone SoC. Otherwise it is a nop PHY. [ balbi@ti.com : add COMPILE_TEST as a possible dependency make sure drvdata is initialized before adding PHY ] Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: WingMan Kwok <w-kwok2@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-12usb: dwc3: add Keystone specific glue layerWingMan Kwok3-0/+210
Add Keystone platform specific glue layer to support USB3 Host mode. [ balbi@ti.com : fix order of clk_disable() and platform_device_unregister() ] Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: WingMan Kwok <w-kwok2@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-10usb: dwc3: set gadget's quirk ep_out_align_sizeDavid Cohen1-0/+6
DWC3 requires epout to have buffer size aligned to MaxPacketSize value. This patch sets necessary quirk for it. Signed-off-by: David Cohen <david.a.cohen@linux.intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-10usb: f_fs: check quirk to pad epout buf size when not aligned to maxpacketsizeMichal Nazarewicz1-4/+19
Check gadget.quirk_ep_out_aligned_size to decide if buffer size requires to be aligned to maxpacketsize of an out endpoint. ffs_epfile_io() needs to pad epout buffer to match above condition if quirk is found. Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: David Cohen <david.a.cohen@linux.intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-10usb: gadget: f_fs: remove loop from I/O functionMichal Nazarewicz1-54/+40
When endpoint changes (due to it being disabled or alt setting changed), mimic the action as if the change happened after the request has been queued, instead of retrying with the new endpoint. Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-10usb: phy: r-car gen2: use usb_add_phy_devValentine Barshak1-1/+1
Use usb_add_phy_dev instead of usb_add_phy, so that devices can be bound to the phy. This is needed to set up USB phy for some internal PCI USB host controllers on R-Car Gen2. Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-09usb: dwc3: omap: remove unnecessary lockFelipe Balbi1-10/+0
the lock was only taken inside the hardirq handler, which runs with IRQs disabled. There's no chance of any race condition happening, even on SMP machines. It's safe to remove that spinlock. Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-07usb: omap1: Tahvo USB transceiver driverAaro Koskinen3-0/+479
Add Tahvo USB transceiver driver. Based on old code from linux-omap tree. The original driver was written by Juha Yrjölä, Tony Lindgren, and Timo Teräs. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-07usb: omap1: OTG controller driverAaro Koskinen3-0/+180
Transceivers need to manage OTG controller state on OMAP1 to enable switching between peripheral and host modes. Provide a driver for that. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-07usb: phy: phy-mxs-usb: Check the return value from clk_prepare_enable()Fabio Estevam1-2/+9
clk_prepare_enable() may fail, so let's check its return value and propagate it in the case of error. Acked-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-06usb: gadget: amd5536udc: remove DEFINE_PCI_DEVICE_TABLE macroJingoo Han1-1/+1
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro is not preferred. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-06usb: gadget: pch_udc: remove DEFINE_PCI_DEVICE_TABLE macroJingoo Han1-1/+1
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro is not preferred. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-12-06usb: dwc3: pci: remove DEFINE_PCI_DEVICE_TABLE macroJingoo Han1-1/+1
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro is not preferred. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: gadget: f_sourcesink: add configfs supportAndrzej Pietrasiewicz4-5/+335
Add support for using the sourcesink function in gadgets composed with configfs. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: gadget: f_loopback: add configfs supportAndrzej Pietrasiewicz4-2/+158
Add support for using the loopback USB function in gadgets composed with configfs. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: gadget: factor out alloc_ep_reqAndrzej Pietrasiewicz8-49/+83
alloc_ep_req() is a function repeated in several modules. Make a common implementation and use it. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: gadget: composite: redirect setup requestsAndrzej Pietrasiewicz1-1/+15
If there are setup requests not directed to an endpont or an interface, current config's setup() has been attempted so far. This patch, in case the above fails, adds code which tries the setup() of configuration's function if there is only one function in the configuration. This behavior is required to provide equivalent of gadget zero with configfs. The gadget zero has a "config driver" for sourcesink, but all it does is delegating the request to the function proper. So when the equivalent gadget is set up with configfs it needs to handle requests directed to "config driver", but with configfs it is not possible to specify "config drivers". Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: musb: dsps: polling ID pin status only in otg modeBin Liu1-2/+3
Only start the otg_timer in dual role mode; otherwise in peripheral mode when musb is disconnected from the host port, otg_timer starts and continuously toggles the session, which causes VBUS pulse. Signed-off-by: Bin Liu <b-liu@ti.com> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: phy: Add OTG FSM configuration optionAnton Tikhomirov2-3/+11
This patch removes dependency on Freescale USB UTG Transceiver driver and makes OTG FSM implementation selectable. Signed-off-by: Anton Tikhomirov <av.tikhomirov@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: phy: move OTG FSM headerAnton Tikhomirov3-247/+2
Other USB drivers may want to use OTG final state machine implementation, so make this header available for them. Signed-off-by: Anton Tikhomirov <av.tikhomirov@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: phy: replace spinlock with mutex in OTG FSMAnton Tikhomirov3-10/+8
OTG Final State Machine calls functions which may sleep. For example, start_gadget callback implementation can use usb_gadget_vbus_connect(), whose context: can sleep. If so, mutex should be used instead of spinlock. Signed-off-by: Anton Tikhomirov <av.tikhomirov@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: phy: fsm: protect against multiple inclusionsAnton Tikhomirov1-0/+5
if this header is included twice, we would have redefinition build errors. Fix this. Signed-off-by: Anton Tikhomirov <av.tikhomirov@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: phy: fsm: don't depend on indirect includesFelipe Balbi1-0/+3
this header uses spinlocks and errno values, so we must include <linux/spinlock.h> and <linux/errno.h> to avoid build errors. Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: gadget: update some out of date commentsDan Carpenter2-2/+2
These functions used to return negative errror codes but now they return ERR_PTRs. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: gadget: remove superfluous name castsGeert Uytterhoeven2-2/+2
device_driver.name is "const char *" Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: linux-usb@vger.kernel.org Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: gadget: goku: remove unused argumentMichal Nazarewicz1-8/+4
The stop_activity function never uses driver argument (even though it modifies it) and thus it is safe to remove it. Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: gadget: epautoconf: switch over to usb_endpoint_type()Felipe Balbi1-1/+1
we have a helper to fetch endpoint type out of a descriptor, let's use it. Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-11-26usb: musb: dsps: add support for suspend and resumeDaniel Mack4-2/+66
The dsps platform needs to save save some registers at suspend time and restore them after resume. This patch adds a struct for these registers, and also lets the musb core know that the core registers need to be saved as well. We also have to explicitly de-assert the port reset upon resume on this platform, but musb_port_reset() should not be called from glue layers. Hence, introduce a flag in struct musb_hdrc_config for this. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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