diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-03 19:05:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-03 19:05:27 +0300 |
| commit | 3515468a87a47781f6af818773650513ff14656a (patch) | |
| tree | 55241860ef8d7cf670c0d042aafd02976d0ef370 | |
| parent | 12456e509be25d24fe479394852428517922d02a (diff) | |
| parent | 2e487d280525b91b03976203b15aba365ec5b4e6 (diff) | |
| download | linux-3515468a87a47781f6af818773650513ff14656a.tar.xz | |
Merge tag 'usb-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
USB: changes for v5.2 merge window
With a total of 50 non-merge commits, this is not a large pull
request. Most of the changes are, again, in dwc2 (37%) and dwc3 (32%)
with the rest of it scattered among other UDCs, function drivers and
device-tree bindings.
No really big feature this time around apart from support to Amlogic
being added to both dwc3 and dwc2 drivers.
* tag 'usb-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb: (50 commits)
usb: dwc3: Rename DWC3_DCTL_LPM_ERRATA
usb: dwc3: Fix default lpm_nyet_threshold value
usb: dwc3: debug: Print GET_STATUS(device) tracepoint
usb: dwc3: Do core validation early on probe
usb: dwc3: gadget: Set lpm_capable
usb: gadget: atmel: tie wake lock to running clock
usb: gadget: atmel: support USB suspend
usb: gadget: atmel_usba_udc: simplify setting of interrupt-enabled mask
dwc2: gadget: Fix completed transfer size calculation in DDMA
usb: dwc2: Set lpm mode parameters depend on HW configuration
usb: dwc2: Fix channel disable flow
usb: dwc2: Set actual frame number for completed ISOC transfer
usb: gadget: do not use __constant_cpu_to_le16
usb: dwc2: gadget: Increase descriptors count for ISOC's
usb: introduce usb_ep_type_string() function
usb: dwc3: move synchronize_irq() out of the spinlock protected block
usb: dwc3: Free resource immediately after use
usb: dwc3: of-simple: Convert to bulk clk API
usb: dwc2: Delayed status support
usb: gadget: udc: lpc32xx: rework interrupt handling
...
32 files changed, 1383 insertions, 529 deletions
diff --git a/Documentation/devicetree/bindings/usb/amlogic,dwc3.txt b/Documentation/devicetree/bindings/usb/amlogic,dwc3.txt index 9a8b631904fd..b9f04e617eb7 100644 --- a/Documentation/devicetree/bindings/usb/amlogic,dwc3.txt +++ b/Documentation/devicetree/bindings/usb/amlogic,dwc3.txt @@ -40,3 +40,91 @@ Example device nodes: phy-names = "usb2-phy", "usb3-phy"; }; }; + +Amlogic Meson G12A DWC3 USB SoC Controller Glue + +The Amlogic G12A embeds a DWC3 USB IP Core configured for USB2 and USB3 +in host-only mode, and a DWC2 IP Core configured for USB2 peripheral mode +only. + +A glue connects the DWC3 core to USB2 PHYs and optionnaly to an USB3 PHY. + +One of the USB2 PHY can be re-routed in peripheral mode to a DWC2 USB IP. + +The DWC3 Glue controls the PHY routing and power, an interrupt line is +connected to the Glue to serve as OTG ID change detection. + +Required properties: +- compatible: Should be "amlogic,meson-g12a-usb-ctrl" +- clocks: a handle for the "USB" clock +- resets: a handle for the shared "USB" reset line +- reg: The base address and length of the registers +- interrupts: the interrupt specifier for the OTG detection +- phys: handle to used PHYs on the system + - a <0> phandle can be used if a PHY is not used +- phy-names: names of the used PHYs on the system : + - "usb2-phy0" for USB2 PHY0 if USBHOST_A port is used + - "usb2-phy1" for USB2 PHY1 if USBOTG_B port is used + - "usb3-phy0" for USB3 PHY if USB3_0 is used +- dr_mode: should be "host", "peripheral", or "otg" depending on + the usage and configuration of the OTG Capable port. + - "host" and "peripheral" means a fixed Host or Device only connection + - "otg" means the port can be used as both Host or Device and + be switched automatically using the OTG ID pin. + +Optional properties: +- vbus-supply: should be a phandle to the regulator controlling the VBUS + power supply when used in OTG switchable mode + +Required child nodes: + +A child node must exist to represent the core DWC3 IP block. The name of +the node is not important. The content of the node is defined in dwc3.txt. + +A child node must exist to represent the core DWC2 IP block. The name of +the node is not important. The content of the node is defined in dwc2.txt. + +PHY documentation is provided in the following places: +- Documentation/devicetree/bindings/phy/meson-g12a-usb2-phy.txt +- Documentation/devicetree/bindings/phy/meson-g12a-usb3-pcie-phy.txt + +Example device nodes: + usb: usb@ffe09000 { + compatible = "amlogic,meson-g12a-usb-ctrl"; + reg = <0x0 0xffe09000 0x0 0xa0>; + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>; + #address-cells = <2>; + #size-cells = <2>; + ranges; + + clocks = <&clkc CLKID_USB>; + resets = <&reset RESET_USB>; + + dr_mode = "otg"; + + phys = <&usb2_phy0>, <&usb2_phy1>, + <&usb3_pcie_phy PHY_TYPE_USB3>; + phy-names = "usb2-phy0", "usb2-phy1", "usb3-phy0"; + + dwc2: usb@ff400000 { + compatible = "amlogic,meson-g12a-usb", "snps,dwc2"; + reg = <0x0 0xff400000 0x0 0x40000>; + interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&clkc CLKID_USB1_DDR_BRIDGE>; + clock-names = "ddr"; + phys = <&usb2_phy1>; + dr_mode = "peripheral"; + g-rx-fifo-size = <192>; + g-np-tx-fifo-size = <128>; + g-tx-fifo-size = <128 128 16 16 16>; + }; + + dwc3: usb@ff500000 { + compatible = "snps,dwc3"; + reg = <0x0 0xff500000 0x0 0x100000>; + interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>; + dr_mode = "host"; + snps,dis_u2_susphy_quirk; + snps,quirk-frame-length-adjustment; + }; + }; diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt index 6dc3c4a34483..49eac0dc86b0 100644 --- a/Documentation/devicetree/bindings/usb/dwc2.txt +++ b/Documentation/devicetree/bindings/usb/dwc2.txt @@ -14,6 +14,7 @@ Required properties: - "amlogic,meson8-usb": The DWC2 USB controller instance in Amlogic Meson8 SoCs; - "amlogic,meson8b-usb": The DWC2 USB controller instance in Amlogic Meson8b SoCs; - "amlogic,meson-gxbb-usb": The DWC2 USB controller instance in Amlogic S905 SoCs; + - "amlogic,meson-g12a-usb": The DWC2 USB controller instance in Amlogic G12A SoCs; - "amcc,dwc-otg": The DWC2 USB controller instance in AMCC Canyonlands 460EX SoCs; - snps,dwc2: A generic DWC2 USB controller with default parameters. - "st,stm32f4x9-fsotg": The DWC2 USB FS/HS controller instance in STM32F4x9 SoCs @@ -31,12 +32,18 @@ Refer to clk/clock-bindings.txt for generic clock consumer properties Optional properties: - phys: phy provider specifier - phy-names: shall be "usb2-phy" +- vbus-supply: reference to the VBUS regulator. Depending on the current mode + this is enabled (in "host" mode") or disabled (in "peripheral" mode). The + regulator is updated if the controller is configured in "otg" mode and the + status changes between "host" and "peripheral". Refer to phy/phy-bindings.txt for generic phy consumer properties - dr_mode: shall be one of "host", "peripheral" and "otg" Refer to usb/generic.txt - g-rx-fifo-size: size of rx fifo size in gadget mode. - g-np-tx-fifo-size: size of non-periodic tx fifo size in gadget mode. - g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0) in gadget mode. +- snps,reset-phy-on-wake: If present indicates that we need to reset the PHY when + we detect a wakeup. This is due to a hardware errata. Deprecated properties: - g-use-dma: gadget DMA mode is automatically detected diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi index a024d1e7e74c..8ce3dd2264b1 100644 --- a/arch/arm/boot/dts/rk3288.dtsi +++ b/arch/arm/boot/dts/rk3288.dtsi @@ -616,6 +616,7 @@ dr_mode = "host"; phys = <&usbphy2>; phy-names = "usb2-phy"; + snps,reset-phy-on-wake; status = "disabled"; }; @@ -904,6 +905,8 @@ clocks = <&cru SCLK_OTGPHY0>; clock-names = "phyclk"; #clock-cells = <0>; + resets = <&cru SRST_USBOTG_PHY>; + reset-names = "phy-reset"; }; usbphy1: usb-phy@334 { @@ -912,6 +915,8 @@ clocks = <&cru SCLK_OTGPHY1>; clock-names = "phyclk"; #clock-cells = <0>; + resets = <&cru SRST_USBHOST0_PHY>; + reset-names = "phy-reset"; }; usbphy2: usb-phy@348 { @@ -920,6 +925,8 @@ clocks = <&cru SCLK_OTGPHY2>; clock-names = "phyclk"; #clock-cells = <0>; + resets = <&cru SRST_USBHOST1_PHY>; + reset-names = "phy-reset"; }; }; }; diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 1949134f72e6..2f94568ba385 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3174,13 +3174,14 @@ static int usb_disable_remote_wakeup(struct usb_device *udev) } /* Count of wakeup-enabled devices at or below udev */ -static unsigned wakeup_enabled_descendants(struct usb_device *udev) +unsigned usb_wakeup_enabled_descendants(struct usb_device *udev) { struct usb_hub *hub = usb_hub_to_struct_hub(udev); return udev->do_remote_wakeup + (hub ? hub->wakeup_enabled_descendants : 0); } +EXPORT_SYMBOL_GPL(usb_wakeup_enabled_descendants); /* * usb_port_suspend - suspend a usb device's upstream port @@ -3282,7 +3283,7 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg) * Therefore we will turn on the suspend feature if udev or any of its * descendants is enabled for remote wakeup. */ - else if (PMSG_IS_AUTO(msg) || wakeup_enabled_descendants(udev) > 0) + else if (PMSG_IS_AUTO(msg) || usb_wakeup_enabled_descendants(udev) > 0) status = set_port_feature(hub->hdev, port1, USB_PORT_FEAT_SUSPEND); else { @@ -3686,7 +3687,7 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg) } if (udev) hub->wakeup_enabled_descendants += - wakeup_enabled_descendants(udev); + usb_wakeup_enabled_descendants(udev); } if (hdev->do_remote_wakeup && hub->quirk_check_port_auto_suspend) { diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 55d5ae2a7ec7..8b499d643461 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -1020,6 +1020,205 @@ int dwc2_hsotg_wait_bit_clear(struct dwc2_hsotg *hsotg, u32 offset, u32 mask, return -ETIMEDOUT; } +/* + * Initializes the FSLSPClkSel field of the HCFG register depending on the + * PHY type + */ +void dwc2_init_fs_ls_pclk_sel(struct dwc2_hsotg *hsotg) +{ + u32 hcfg, val; + + if ((hsotg->hw_params.hs_phy_type == GHWCFG2_HS_PHY_TYPE_ULPI && + hsotg->hw_params.fs_phy_type == GHWCFG2_FS_PHY_TYPE_DEDICATED && + hsotg->params.ulpi_fs_ls) || + hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS) { + /* Full speed PHY */ + val = HCFG_FSLSPCLKSEL_48_MHZ; + } else { + /* High speed PHY running at full speed or high speed */ + val = HCFG_FSLSPCLKSEL_30_60_MHZ; + } + + dev_dbg(hsotg->dev, "Initializing HCFG.FSLSPClkSel to %08x\n", val); + hcfg = dwc2_readl(hsotg, HCFG); + hcfg &= ~HCFG_FSLSPCLKSEL_MASK; + hcfg |= val << HCFG_FSLSPCLKSEL_SHIFT; + dwc2_writel(hsotg, hcfg, HCFG); +} + +static int dwc2_fs_phy_init(struct dwc2_hsotg *hsotg, bool select_phy) +{ + u32 usbcfg, ggpio, i2cctl; + int retval = 0; + + /* + * core_init() is now called on every switch so only call the + * following for the first time through + */ + if (select_phy) { + dev_dbg(hsotg->dev, "FS PHY selected\n"); + + usbcfg = dwc2_readl(hsotg, GUSBCFG); + if (!(usbcfg & GUSBCFG_PHYSEL)) { + usbcfg |= GUSBCFG_PHYSEL; + dwc2_writel(hsotg, usbcfg, GUSBCFG); + + /* Reset after a PHY select */ + retval = dwc2_core_reset(hsotg, false); + + if (retval) { + dev_err(hsotg->dev, + "%s: Reset failed, aborting", __func__); + return retval; + } + } + + if (hsotg->params.activate_stm_fs_transceiver) { + ggpio = dwc2_readl(hsotg, GGPIO); + if (!(ggpio & GGPIO_STM32_OTG_GCCFG_PWRDWN)) { + dev_dbg(hsotg->dev, "Activating transceiver\n"); + /* + * STM32F4x9 uses the GGPIO register as general + * core configuration register. + */ + ggpio |= GGPIO_STM32_OTG_GCCFG_PWRDWN; + dwc2_writel(hsotg, ggpio, GGPIO); + } + } + } + + /* + * Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS. Also + * do this on HNP Dev/Host mode switches (done in dev_init and + * host_init). + */ + if (dwc2_is_host_mode(hsotg)) + dwc2_init_fs_ls_pclk_sel(hsotg); + + if (hsotg->params.i2c_enable) { + dev_dbg(hsotg->dev, "FS PHY enabling I2C\n"); + + /* Program GUSBCFG.OtgUtmiFsSel to I2C */ + usbcfg = dwc2_readl(hsotg, GUSBCFG); + usbcfg |= GUSBCFG_OTG_UTMI_FS_SEL; + dwc2_writel(hsotg, usbcfg, GUSBCFG); + + /* Program GI2CCTL.I2CEn */ + i2cctl = dwc2_readl(hsotg, GI2CCTL); + i2cctl &= ~GI2CCTL_I2CDEVADDR_MASK; + i2cctl |= 1 << GI2CCTL_I2CDEVADDR_SHIFT; + i2cctl &= ~GI2CCTL_I2CEN; + dwc2_writel(hsotg, i2cctl, GI2CCTL); + i2cctl |= GI2CCTL_I2CEN; + dwc2_writel(hsotg, i2cctl, GI2CCTL); + } + + return retval; +} + +static int dwc2_hs_phy_init(struct dwc2_hsotg *hsotg, bool select_phy) +{ + u32 usbcfg, usbcfg_old; + int retval = 0; + + if (!select_phy) + return 0; + + usbcfg = dwc2_readl(hsotg, GUSBCFG); + usbcfg_old = usbcfg; + + /* + * HS PHY parameters. These parameters are preserved during soft reset + * so only program the first time. Do a soft reset immediately after + * setting phyif. + */ + switch (hsotg->params.phy_type) { + case DWC2_PHY_TYPE_PARAM_ULPI: + /* ULPI interface */ + dev_dbg(hsotg->dev, "HS ULPI PHY selected\n"); + usbcfg |= GUSBCFG_ULPI_UTMI_SEL; + usbcfg &= ~(GUSBCFG_PHYIF16 | GUSBCFG_DDRSEL); + if (hsotg->params.phy_ulpi_ddr) + usbcfg |= GUSBCFG_DDRSEL; + + /* Set external VBUS indicator as needed. */ + if (hsotg->params.oc_disable) + usbcfg |= (GUSBCFG_ULPI_INT_VBUS_IND | + GUSBCFG_INDICATORPASSTHROUGH); + break; + case DWC2_PHY_TYPE_PARAM_UTMI: + /* UTMI+ interface */ + dev_dbg(hsotg->dev, "HS UTMI+ PHY selected\n"); + usbcfg &= ~(GUSBCFG_ULPI_UTMI_SEL | GUSBCFG_PHYIF16); + if (hsotg->params.phy_utmi_width == 16) + usbcfg |= GUSBCFG_PHYIF16; + + /* Set turnaround time */ + if (dwc2_is_device_mode(hsotg)) { + usbcfg &= ~GUSBCFG_USBTRDTIM_MASK; + if (hsotg->params.phy_utmi_width == 16) + usbcfg |= 5 << GUSBCFG_USBTRDTIM_SHIFT; + else + usbcfg |= 9 << GUSBCFG_USBTRDTIM_SHIFT; + } + break; + default: + dev_err(hsotg->dev, "FS PHY selected at HS!\n"); + break; + } + + if (usbcfg != usbcfg_old) { + dwc2_writel(hsotg, usbcfg, GUSBCFG); + + /* Reset after setting the PHY parameters */ + retval = dwc2_core_reset(hsotg, false); + if (retval) { + dev_err(hsotg->dev, + "%s: Reset failed, aborting", __func__); + return retval; + } + } + + return retval; +} + +int dwc2_phy_init(struct dwc2_hsotg *hsotg, bool select_phy) +{ + u32 usbcfg; + int retval = 0; + + if ((hsotg->params.speed == DWC2_SPEED_PARAM_FULL || + hsotg->params.speed == DWC2_SPEED_PARAM_LOW) && + hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS) { + /* If FS/LS mode with FS/LS PHY */ + retval = dwc2_fs_phy_init(hsotg, select_phy); + if (retval) + return retval; + } else { + /* High speed PHY */ + retval = dwc2_hs_phy_init(hsotg, select_phy); + if (retval) + return retval; + } + + if (hsotg->hw_params.hs_phy_type == GHWCFG2_HS_PHY_TYPE_ULPI && + hsotg->hw_params.fs_phy_type == GHWCFG2_FS_PHY_TYPE_DEDICATED && + hsotg->params.ulpi_fs_ls) { + dev_dbg(hsotg->dev, "Setting ULPI FSLS\n"); + usbcfg = dwc2_readl(hsotg, GUSBCFG); + usbcfg |= GUSBCFG_ULPI_FS_LS; + usbcfg |= GUSBCFG_ULPI_CLK_SUSP_M; + dwc2_writel(hsotg, usbcfg, GUSBCFG); + } else { + usbcfg = dwc2_readl(hsotg, GUSBCFG); + usbcfg &= ~GUSBCFG_ULPI_FS_LS; + usbcfg &= ~GUSBCFG_ULPI_CLK_SUSP_M; + dwc2_writel(hsotg, usbcfg, GUSBCFG); + } + + return retval; +} + MODULE_DESCRIPTION("DESIGNWARE HS OTG Core"); MODULE_AUTHOR("Synopsys, Inc."); MODULE_LICENSE("Dual BSD/GPL"); diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 30bab8463c96..152ac41dfb2d 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -859,6 +859,8 @@ struct dwc2_hregs_backup { * @gadget_enabled: Peripheral mode sub-driver initialization indicator. * @ll_hw_enabled: Status of low-level hardware resources. * @hibernated: True if core is hibernated + * @reset_phy_on_wake: Quirk saying that we should assert PHY reset on a + * remote wakeup. * @frame_number: Frame number read from the core. For both device * and host modes. The value ranges are from 0 * to HFNUM_MAX_FRNUM. @@ -869,7 +871,6 @@ struct dwc2_hregs_backup { * removed once all SoCs support usb transceiver. * @supplies: Definition of USB power supplies * @vbus_supply: Regulator supplying vbus. - * @phyif: PHY interface width * @lock: Spinlock that protects all the driver data structures * @priv: Stores a pointer to the struct usb_hcd * @queuing_high_bandwidth: True if multiple packets of a high-bandwidth @@ -972,6 +973,7 @@ struct dwc2_hregs_backup { * @status_buf_dma: DMA address for status_buf * @start_work: Delayed work for handling host A-cable connection * @reset_work: Delayed work for handling a port reset + * @phy_reset_work: Work structure for doing a PHY reset * @otg_port: OTG port number * @frame_list: Frame list * @frame_list_dma: Frame list DMA address @@ -991,6 +993,7 @@ struct dwc2_hregs_backup { * @ctrl_buff: Buffer for EP0 control requests. * @ctrl_req: Request for EP0 control packets. * @ep0_state: EP0 control transfers state + * @delayed_status: true when gadget driver asks for delayed status * @test_mode: USB test mode requested by the host * @remote_wakeup_allowed: True if device is allowed to wake-up host by * remote-wakeup signalling @@ -1045,6 +1048,7 @@ struct dwc2_hsotg { unsigned int gadget_enabled:1; unsigned int ll_hw_enabled:1; unsigned int hibernated:1; + unsigned int reset_phy_on_wake:1; u16 frame_number; struct phy *phy; @@ -1052,7 +1056,6 @@ struct dwc2_hsotg { struct dwc2_hsotg_plat *plat; struct regulator_bulk_data supplies[DWC2_NUM_SUPPLIES]; struct regulator *vbus_supply; - u32 phyif; spinlock_t lock; void *priv; @@ -1147,6 +1150,7 @@ struct dwc2_hsotg { struct delayed_work start_work; struct delayed_work reset_work; + struct work_struct phy_reset_work; u8 otg_port; u32 *frame_list; dma_addr_t frame_list_dma; @@ -1172,6 +1176,7 @@ struct dwc2_hsotg { void *ep0_buff; void *ctrl_buff; enum dwc2_ep0_state ep0_state; + unsigned delayed_status : 1; u8 test_mode; dma_addr_t setup_desc_dma[2]; @@ -1283,6 +1288,8 @@ int dwc2_exit_partial_power_down(struct dwc2_hsotg *hsotg, bool restore); int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg, int is_host); int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup, int reset, int is_host); +void dwc2_init_fs_ls_pclk_sel(struct dwc2_hsotg *hsotg); +int dwc2_phy_init(struct dwc2_hsotg *hsotg, bool select_phy); void dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host); void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg); @@ -1431,6 +1438,8 @@ int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg); int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg); int dwc2_host_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup, int reset); +static inline void dwc2_host_schedule_phy_reset(struct dwc2_hsotg *hsotg) +{ schedule_work(&hsotg->phy_reset_work); } #else static inline int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg) { return 0; } @@ -1454,6 +1463,7 @@ static inline int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg) static inline int dwc2_host_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup, int reset) { return 0; } +static inline void dwc2_host_schedule_phy_reset(struct dwc2_hsotg *hsotg) {} #endif diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index 19ae2595f1c3..6af6add3d4c0 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -435,6 +435,18 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg) /* Restart the Phy Clock */ pcgcctl &= ~PCGCTL_STOPPCLK; dwc2_writel(hsotg, pcgcctl, PCGCTL); + + /* + * If we've got this quirk then the PHY is stuck upon + * wakeup. Assert reset. This will propagate out and + * eventually we'll re-enumerate the device. Not great + * but the best we can do. We can't call phy_reset() + * at interrupt time but there's no hurry, so we'll + * schedule it for later. + */ + if (hsotg->reset_phy_on_wake) + dwc2_host_schedule_phy_reset(hsotg); + mod_timer(&hsotg->wkp_timer, jiffies + msecs_to_jiffies(71)); } else { diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 6812a8a3a98b..16ffd9fd9361 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -27,6 +27,8 @@ #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb/phy.h> +#include <linux/usb/composite.h> + #include "core.h" #include "hw.h" @@ -714,13 +716,11 @@ static unsigned int dwc2_gadget_get_chain_limit(struct dwc2_hsotg_ep *hs_ep) unsigned int maxsize; if (is_isoc) - maxsize = hs_ep->dir_in ? DEV_DMA_ISOC_TX_NBYTES_LIMIT : - DEV_DMA_ISOC_RX_NBYTES_LIMIT; + maxsize = (hs_ep->dir_in ? DEV_DMA_ISOC_TX_NBYTES_LIMIT : + DEV_DMA_ISOC_RX_NBYTES_LIMIT) * + MAX_DMA_DESC_NUM_HS_ISOC; else - maxsize = DEV_DMA_NBYTES_LIMIT; - - /* Above size of one descriptor was chosen, multiple it */ - maxsize *= MAX_DMA_DESC_NUM_GENERIC; + maxsize = DEV_DMA_NBYTES_LIMIT * MAX_DMA_DESC_NUM_GENERIC; return maxsize; } @@ -932,7 +932,7 @@ static int dwc2_gadget_fill_isoc_desc(struct dwc2_hsotg_ep *hs_ep, /* Update index of last configured entry in the chain */ hs_ep->next_desc++; - if (hs_ep->next_desc >= MAX_DMA_DESC_NUM_GENERIC) + if (hs_ep->next_desc >= MAX_DMA_DESC_NUM_HS_ISOC) hs_ep->next_desc = 0; return 0; @@ -964,7 +964,7 @@ static void dwc2_gadget_start_isoc_ddma(struct dwc2_hsotg_ep *hs_ep) } /* Initialize descriptor chain by Host Busy status */ - for (i = 0; i < MAX_DMA_DESC_NUM_GENERIC; i++) { + for (i = 0; i < MAX_DMA_DESC_NUM_HS_ISOC; i++) { desc = &hs_ep->desc_list[i]; desc->status = 0; desc->status |= (DEV_DMA_BUFF_STS_HBUSY @@ -1446,6 +1446,11 @@ static int dwc2_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, return 0; } + /* Change EP direction if status phase request is after data out */ + if (!hs_ep->index && !req->length && !hs_ep->dir_in && + hs->ep0_state == DWC2_EP0_DATA_OUT) + hs_ep->dir_in = 1; + if (first) { if (!hs_ep->isochronous) { dwc2_hsotg_start_req(hs, hs_ep, hs_req, false); @@ -1938,6 +1943,10 @@ static void dwc2_hsotg_process_control(struct dwc2_hsotg *hsotg, dev_dbg(hsotg->dev, "driver->setup() ret %d\n", ret); } + hsotg->delayed_status = false; + if (ret == USB_GADGET_DELAYED_STATUS) + hsotg->delayed_status = true; + /* * the request is either unhandlable, or is not formatted correctly * so respond with a STALL for the status stage to indicate failure. @@ -2157,12 +2166,17 @@ static void dwc2_gadget_complete_isoc_request_ddma(struct dwc2_hsotg_ep *hs_ep) */ if (!hs_ep->dir_in && ureq->length & 0x3) ureq->actual += 4 - (ureq->length & 0x3); + + /* Set actual frame number for completed transfers */ + ureq->frame_number = + (desc_sts & DEV_DMA_ISOC_FRNUM_MASK) >> + DEV_DMA_ISOC_FRNUM_SHIFT; } dwc2_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); hs_ep->compl_desc++; - if (hs_ep->compl_desc > (MAX_DMA_DESC_NUM_GENERIC - 1)) + if (hs_ep->compl_desc > (MAX_DMA_DESC_NUM_HS_ISOC - 1)) hs_ep->compl_desc = 0; desc_sts = hs_ep->desc_list[hs_ep->compl_desc].status; } @@ -2311,6 +2325,7 @@ static unsigned int dwc2_gadget_get_xfersize_ddma(struct dwc2_hsotg_ep *hs_ep) if (status & DEV_DMA_STS_MASK) dev_err(hsotg->dev, "descriptor %d closed with %x\n", i, status & DEV_DMA_STS_MASK); + desc++; } return bytes_rem; @@ -2387,8 +2402,8 @@ static void dwc2_hsotg_handle_outdone(struct dwc2_hsotg *hsotg, int epnum) if (!using_desc_dma(hsotg) && epnum == 0 && hsotg->ep0_state == DWC2_EP0_DATA_OUT) { /* Move to STATUS IN */ - dwc2_hsotg_ep0_zlp(hsotg, true); - return; + if (!hsotg->delayed_status) + dwc2_hsotg_ep0_zlp(hsotg, true); } /* @@ -3053,8 +3068,20 @@ static void dwc2_hsotg_epint(struct dwc2_hsotg *hsotg, unsigned int idx, /* Safety check EP0 state when STSPHSERCVD asserted */ if (hsotg->ep0_state == DWC2_EP0_DATA_OUT) { /* Move to STATUS IN for DDMA */ - if (using_desc_dma(hsotg)) - dwc2_hsotg_ep0_zlp(hsotg, true); + if (using_desc_dma(hsotg)) { + if (!hsotg->delayed_status) + dwc2_hsotg_ep0_zlp(hsotg, true); + else + /* In case of 3 stage Control Write with delayed + * status, when Status IN transfer started + * before STSPHSERCVD asserted, NAKSTS bit not + * cleared by CNAK in dwc2_hsotg_start_req() + * function. Clear now NAKSTS to allow complete + * transfer. + */ + dwc2_set_bit(hsotg, DIEPCTL(0), + DXEPCTL_CNAK); + } } } @@ -3314,21 +3341,14 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, /* keep other bits untouched (so e.g. forced modes are not lost) */ usbcfg = dwc2_readl(hsotg, GUSBCFG); - usbcfg &= ~(GUSBCFG_TOUTCAL_MASK | GUSBCFG_PHYIF16 | GUSBCFG_SRPCAP | - GUSBCFG_HNPCAP | GUSBCFG_USBTRDTIM_MASK); - - if (hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS && - (hsotg->params.speed == DWC2_SPEED_PARAM_FULL || - hsotg->params.speed == DWC2_SPEED_PARAM_LOW)) { - /* FS/LS Dedicated Transceiver Interface */ - usbcfg |= GUSBCFG_PHYSEL; - } else { - /* set the PLL on, remove the HNP/SRP and set the PHY */ - val = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5; - usbcfg |= hsotg->phyif | GUSBCFG_TOUTCAL(7) | - (val << GUSBCFG_USBTRDTIM_SHIFT); - } - dwc2_writel(hsotg, usbcfg, GUSBCFG); + usbcfg &= ~GUSBCFG_TOUTCAL_MASK; + usbcfg |= GUSBCFG_TOUTCAL(7); + + /* remove the HNP/SRP and set the PHY */ + usbcfg &= ~(GUSBCFG_SRPCAP | GUSBCFG_HNPCAP); + dwc2_writel(hsotg, usbcfg, GUSBCFG); + + dwc2_phy_init(hsotg, true); dwc2_hsotg_init_fifo(hsotg); @@ -3899,6 +3919,7 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep, unsigned int i, val, size; int ret = 0; unsigned char ep_type; + int desc_num; dev_dbg(hsotg->dev, "%s: ep %s: a 0x%02x, attr 0x%02x, mps 0x%04x, intr %d\n", @@ -3945,11 +3966,15 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep, dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x from 0x%08x\n", __func__, epctrl, epctrl_reg); + if (using_desc_dma(hsotg) && ep_type == USB_ENDPOINT_XFER_ISOC) + desc_num = MAX_DMA_DESC_NUM_HS_ISOC; + else + desc_num = MAX_DMA_DESC_NUM_GENERIC; + /* Allocate DMA descriptor chain for non-ctrl endpoints */ if (using_desc_dma(hsotg) && !hs_ep->desc_list) { hs_ep->desc_list = dmam_alloc_coherent(hsotg->dev, - MAX_DMA_DESC_NUM_GENERIC * - sizeof(struct dwc2_dma_desc), + desc_num * sizeof(struct dwc2_dma_desc), &hs_ep->desc_list_dma, GFP_ATOMIC); if (!hs_ep->desc_list) { ret = -ENOMEM; @@ -4092,7 +4117,7 @@ error1: error2: if (ret && using_desc_dma(hsotg) && hs_ep->desc_list) { - dmam_free_coherent(hsotg->dev, MAX_DMA_DESC_NUM_GENERIC * + dmam_free_coherent(hsotg->dev, desc_num * sizeof(struct dwc2_dma_desc), hs_ep->desc_list, hs_ep->desc_list_dma); hs_ep->desc_list = NULL; @@ -4328,8 +4353,6 @@ static const struct usb_ep_ops dwc2_hsotg_ep_ops = { */ static void dwc2_hsotg_init(struct dwc2_hsotg *hsotg) { - u32 trdtim; - u32 usbcfg; /* unmask subset of endpoint interrupts */ dwc2_writel(hsotg, DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK | @@ -4353,17 +4376,6 @@ static void dwc2_hsotg_init(struct dwc2_hsotg *hsotg) dwc2_hsotg_init_fifo(hsotg); - /* keep other bits untouched (so e.g. forced modes are not lost) */ - usbcfg = dwc2_readl(hsotg, GUSBCFG); - usbcfg &= ~(GUSBCFG_TOUTCAL_MASK | GUSBCFG_PHYIF16 | GUSBCFG_SRPCAP | - GUSBCFG_HNPCAP | GUSBCFG_USBTRDTIM_MASK); - - /* set the PLL on, remove the HNP/SRP and set the PHY */ - trdtim = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5; - usbcfg |= hsotg->phyif | GUSBCFG_TOUTCAL(7) | - (trdtim << GUSBCFG_USBTRDTIM_SHIFT); - dwc2_writel(hsotg, usbcfg, GUSBCFG); - if (using_dma(hsotg)) dwc2_set_bit(hsotg, GAHBCFG, GAHBCFG_DMA_EN); } @@ -5073,6 +5085,7 @@ void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg) val |= hsotg->params.lpm_clock_gating ? GLPMCFG_ENBLSLPM : 0; val |= hsotg->params.hird_threshold << GLPMCFG_HIRD_THRES_SHIFT; val |= hsotg->params.besl ? GLPMCFG_ENBESL : 0; + val |= GLPMCFG_LPM_REJECT_CTRL_CONTROL; val |= GLPMCFG_LPM_ACCEPT_CTRL_ISOC; dwc2_writel(hsotg, val, GLPMCFG); dev_dbg(hsotg->dev, "GLPMCFG=0x%08x\n", dwc2_readl(hsotg, GLPMCFG)); diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 3f087962f498..b50ec3714fd8 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -97,196 +97,6 @@ static void dwc2_enable_common_interrupts(struct dwc2_hsotg *hsotg) dwc2_writel(hsotg, intmsk, GINTMSK); } -/* - * Initializes the FSLSPClkSel field of the HCFG register depending on the - * PHY type - */ -static void dwc2_init_fs_ls_pclk_sel(struct dwc2_hsotg *hsotg) -{ - u32 hcfg, val; - - if ((hsotg->hw_params.hs_phy_type == GHWCFG2_HS_PHY_TYPE_ULPI && - hsotg->hw_params.fs_phy_type == GHWCFG2_FS_PHY_TYPE_DEDICATED && - hsotg->params.ulpi_fs_ls) || - hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS) { - /* Full speed PHY */ - val = HCFG_FSLSPCLKSEL_48_MHZ; - } else { - /* High speed PHY running at full speed or high speed */ - val = HCFG_FSLSPCLKSEL_30_60_MHZ; - } - - dev_dbg(hsotg->dev, "Initializing HCFG.FSLSPClkSel to %08x\n", val); - hcfg = dwc2_readl(hsotg, HCFG); - hcfg &= ~HCFG_FSLSPCLKSEL_MASK; - hcfg |= val << HCFG_FSLSPCLKSEL_SHIFT; - dwc2_writel(hsotg, hcfg, HCFG); -} - -static int dwc2_fs_phy_init(struct dwc2_hsotg *hsotg, bool select_phy) -{ - u32 usbcfg, ggpio, i2cctl; - int retval = 0; - - /* - * core_init() is now called on every switch so only call the - * following for the first time through - */ - if (select_phy) { - dev_dbg(hsotg->dev, "FS PHY selected\n"); - - usbcfg = dwc2_readl(hsotg, GUSBCFG); - if (!(usbcfg & GUSBCFG_PHYSEL)) { - usbcfg |= GUSBCFG_PHYSEL; - dwc2_writel(hsotg, usbcfg, GUSBCFG); - - /* Reset after a PHY select */ - retval = dwc2_core_reset(hsotg, false); - - if (retval) { - dev_err(hsotg->dev, - "%s: Reset failed, aborting", __func__); - return retval; - } - } - - if (hsotg->params.activate_stm_fs_transceiver) { - ggpio = dwc2_readl(hsotg, GGPIO); - if (!(ggpio & GGPIO_STM32_OTG_GCCFG_PWRDWN)) { - dev_dbg(hsotg->dev, "Activating transceiver\n"); - /* - * STM32F4x9 uses the GGPIO register as general - * core configuration register. - */ - ggpio |= GGPIO_STM32_OTG_GCCFG_PWRDWN; - dwc2_writel(hsotg, ggpio, GGPIO); - } - } - } - - /* - * Program DCFG.DevSpd or HCFG.FSLSPclkSel to 48Mhz in FS. Also - * do this on HNP Dev/Host mode switches (done in dev_init and - * host_init). - */ - if (dwc2_is_host_mode(hsotg)) - dwc2_init_fs_ls_pclk_sel(hsotg); - - if (hsotg->params.i2c_enable) { - dev_dbg(hsotg->dev, "FS PHY enabling I2C\n"); - - /* Program GUSBCFG.OtgUtmiFsSel to I2C */ - usbcfg = dwc2_readl(hsotg, GUSBCFG); - usbcfg |= GUSBCFG_OTG_UTMI_FS_SEL; - dwc2_writel(hsotg, usbcfg, GUSBCFG); - - /* Program GI2CCTL.I2CEn */ - i2cctl = dwc2_readl(hsotg, GI2CCTL); - i2cctl &= ~GI2CCTL_I2CDEVADDR_MASK; - i2cctl |= 1 << GI2CCTL_I2CDEVADDR_SHIFT; - i2cctl &= ~GI2CCTL_I2CEN; - dwc2_writel(hsotg, i2cctl, GI2CCTL); - i2cctl |= GI2CCTL_I2CEN; - dwc2_writel(hsotg, i2cctl, GI2CCTL); - } - - return retval; -} - -static int dwc2_hs_phy_init(struct dwc2_hsotg *hsotg, bool select_phy) -{ - u32 usbcfg, usbcfg_old; - int retval = 0; - - if (!select_phy) - return 0; - - usbcfg = dwc2_readl(hsotg, GUSBCFG); - usbcfg_old = usbcfg; - - /* - * HS PHY parameters. These parameters are preserved during soft reset - * so only program the first time. Do a soft reset immediately after - * setting phyif. - */ - switch (hsotg->params.phy_type) { - case DWC2_PHY_TYPE_PARAM_ULPI: - /* ULPI interface */ - dev_dbg(hsotg->dev, "HS ULPI PHY selected\n"); - usbcfg |= GUSBCFG_ULPI_UTMI_SEL; - usbcfg &= ~(GUSBCFG_PHYIF16 | GUSBCFG_DDRSEL); - if (hsotg->params.phy_ulpi_ddr) - usbcfg |= GUSBCFG_DDRSEL; - - /* Set external VBUS indicator as needed. */ - if (hsotg->params.oc_disable) - usbcfg |= (GUSBCFG_ULPI_INT_VBUS_IND | - GUSBCFG_INDICATORPASSTHROUGH); - break; - case DWC2_PHY_TYPE_PARAM_UTMI: - /* UTMI+ interface */ - dev_dbg(hsotg->dev, "HS UTMI+ PHY selected\n"); - usbcfg &= ~(GUSBCFG_ULPI_UTMI_SEL | GUSBCFG_PHYIF16); - if (hsotg->params.phy_utmi_width == 16) - usbcfg |= GUSBCFG_PHYIF16; - break; - default: - dev_err(hsotg->dev, "FS PHY selected at HS!\n"); - break; - } - - if (usbcfg != usbcfg_old) { - dwc2_writel(hsotg, usbcfg, GUSBCFG); - - /* Reset after setting the PHY parameters */ - retval = dwc2_core_reset(hsotg, false); - if (retval) { - dev_err(hsotg->dev, - "%s: Reset failed, aborting", __func__); - return retval; - } - } - - return retval; -} - -static int dwc2_phy_init(struct dwc2_hsotg *hsotg, bool select_phy) -{ - u32 usbcfg; - int retval = 0; - - if ((hsotg->params.speed == DWC2_SPEED_PARAM_FULL || - hsotg->params.speed == DWC2_SPEED_PARAM_LOW) && - hsotg->params.phy_type == DWC2_PHY_TYPE_PARAM_FS) { - /* If FS/LS mode with FS/LS PHY */ - retval = dwc2_fs_phy_init(hsotg, select_phy); - if (retval) - return retval; - } else { - /* High speed PHY */ - retval = dwc2_hs_phy_init(hsotg, select_phy); - if (retval) - return retval; - } - - if (hsotg->hw_params.hs_phy_type == GHWCFG2_HS_PHY_TYPE_ULPI && - hsotg->hw_params.fs_phy_type == GHWCFG2_FS_PHY_TYPE_DEDICATED && - hsotg->params.ulpi_fs_ls) { - dev_dbg(hsotg->dev, "Setting ULPI FSLS\n"); - usbcfg = dwc2_readl(hsotg, GUSBCFG); - usbcfg |= GUSBCFG_ULPI_FS_LS; - usbcfg |= GUSBCFG_ULPI_CLK_SUSP_M; - dwc2_writel(hsotg, usbcfg, GUSBCFG); - } else { - usbcfg = dwc2_readl(hsotg, GUSBCFG); - usbcfg &= ~GUSBCFG_ULPI_FS_LS; - usbcfg &= ~GUSBCFG_ULPI_CLK_SUSP_M; - dwc2_writel(hsotg, usbcfg, GUSBCFG); - } - - return retval; -} - static int dwc2_gahbcfg_init(struct dwc2_hsotg *hsotg) { u32 ahbcfg = dwc2_readl(hsotg, GAHBCFG); @@ -2437,25 +2247,31 @@ static void dwc2_core_host_init(struct dwc2_hsotg *hsotg) num_channels = hsotg->params.host_channels; for (i = 0; i < num_channels; i++) { hcchar = dwc2_readl(hsotg, HCCHAR(i)); - hcchar &= ~HCCHAR_CHENA; - hcchar |= HCCHAR_CHDIS; - hcchar &= ~HCCHAR_EPDIR; - dwc2_writel(hsotg, hcchar, HCCHAR(i)); + if (hcchar & HCCHAR_CHENA) { + hcchar &= ~HCCHAR_CHENA; + hcchar |= HCCHAR_CHDIS; + hcchar &= ~HCCHAR_EPDIR; + dwc2_writel(hsotg, hcchar, HCCHAR(i)); + } } /* Halt all channels to put them into a known state */ for (i = 0; i < num_channels; i++) { hcchar = dwc2_readl(hsotg, HCCHAR(i)); - hcchar |= HCCHAR_CHENA | HCCHAR_CHDIS; - hcchar &= ~HCCHAR_EPDIR; - dwc2_writel(hsotg, hcchar, HCCHAR(i)); - dev_dbg(hsotg->dev, "%s: Halt channel %d\n", - __func__, i); - - if (dwc2_hsotg_wait_bit_clear(hsotg, HCCHAR(i), - HCCHAR_CHENA, 1000)) { - dev_warn(hsotg->dev, "Unable to clear enable on channel %d\n", - i); + if (hcchar & HCCHAR_CHENA) { + hcchar |= HCCHAR_CHENA | HCCHAR_CHDIS; + hcchar &= ~HCCHAR_EPDIR; + dwc2_writel(hsotg, hcchar, HCCHAR(i)); + dev_dbg(hsotg->dev, "%s: Halt channel %d\n", + __func__, i); + + if (dwc2_hsotg_wait_bit_clear(hsotg, HCCHAR(i), + HCCHAR_CHENA, + 1000)) { + dev_warn(hsotg->dev, + "Unable to clear enable on channel %d\n", + i); + } } } } @@ -4376,6 +4192,17 @@ static void dwc2_hcd_reset_func(struct work_struct *work) spin_unlock_irqrestore(&hsotg->lock, flags); } +static void dwc2_hcd_phy_reset_func(struct work_struct *work) +{ + struct dwc2_hsotg *hsotg = container_of(work, struct dwc2_hsotg, + phy_reset_work); + int ret; + + ret = phy_reset(hsotg->phy); + if (ret) + dev_warn(hsotg->dev, "PHY reset failed\n"); +} + /* * ========================================================================= * Linux HC Driver Functions @@ -4471,6 +4298,7 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) unsigned long flags; int ret = 0; u32 hprt0; + u32 pcgctl; spin_lock_irqsave(&hsotg->lock, flags); @@ -4486,7 +4314,7 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) if (hsotg->op_state == OTG_STATE_B_PERIPHERAL) goto unlock; - if (hsotg->params.power_down != DWC2_POWER_DOWN_PARAM_PARTIAL) + if (hsotg->params.power_down > DWC2_POWER_DOWN_PARAM_PARTIAL) goto skip_power_saving; /* @@ -4495,21 +4323,35 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) */ if (!hsotg->bus_suspended) { hprt0 = dwc2_read_hprt0(hsotg); - hprt0 |= HPRT0_SUSP; - hprt0 &= ~HPRT0_PWR; - dwc2_writel(hsotg, hprt0, HPRT0); - spin_unlock_irqrestore(&hsotg->lock, flags); - dwc2_vbus_supply_exit(hsotg); - spin_lock_irqsave(&hsotg->lock, flags); + if (hprt0 & HPRT0_CONNSTS) { + hprt0 |= HPRT0_SUSP; + if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_PARTIAL) + hprt0 &= ~HPRT0_PWR; + dwc2_writel(hsotg, hprt0, HPRT0); + } + if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_PARTIAL) { + spin_unlock_irqrestore(&hsotg->lock, flags); + dwc2_vbus_supply_exit(hsotg); + spin_lock_irqsave(&hsotg->lock, flags); + } else { + pcgctl = readl(hsotg->regs + PCGCTL); + pcgctl |= PCGCTL_STOPPCLK; + writel(pcgctl, hsotg->regs + PCGCTL); + } } - /* Enter partial_power_down */ - ret = dwc2_enter_partial_power_down(hsotg); - if (ret) { - if (ret != -ENOTSUPP) - dev_err(hsotg->dev, - "enter partial_power_down failed\n"); - goto skip_power_saving; + if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_PARTIAL) { + /* Enter partial_power_down */ + ret = dwc2_enter_partial_power_down(hsotg); + if (ret) { + if (ret != -ENOTSUPP) + dev_err(hsotg->dev, + "enter partial_power_down failed\n"); + goto skip_power_saving; + } + + /* After entering partial_power_down, hardware is no more accessible */ + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); } /* Ask phy to be suspended */ @@ -4519,9 +4361,6 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) spin_lock_irqsave(&hsotg->lock, flags); } - /* After entering partial_power_down, hardware is no more accessible */ - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - skip_power_saving: hsotg->lx_state = DWC2_L2; unlock: @@ -4534,6 +4373,7 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd) { struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd); unsigned long flags; + u32 pcgctl; int ret = 0; spin_lock_irqsave(&hsotg->lock, flags); @@ -4544,18 +4384,12 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd) if (hsotg->lx_state != DWC2_L2) goto unlock; - if (hsotg->params.power_down != DWC2_POWER_DOWN_PARAM_PARTIAL) { + if (hsotg->params.power_down > DWC2_POWER_DOWN_PARAM_PARTIAL) { hsotg->lx_state = DWC2_L0; goto unlock; } /* - * Set HW accessible bit before powering on the controller - * since an interrupt may rise. - */ - set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - - /* * Enable power if not already done. * This must not be spinlocked since duration * of this call is unknown. @@ -4566,10 +4400,23 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd) spin_lock_irqsave(&hsotg->lock, flags); } - /* Exit partial_power_down */ - ret = dwc2_exit_partial_power_down(hsotg, true); - if (ret && (ret != -ENOTSUPP)) - dev_err(hsotg->dev, "exit partial_power_down failed\n"); + if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_PARTIAL) { + /* + * Set HW accessible bit before powering on the controller + * since an interrupt may rise. + */ + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + + + /* Exit partial_power_down */ + ret = dwc2_exit_partial_power_down(hsotg, true); + if (ret && (ret != -ENOTSUPP)) + dev_err(hsotg->dev, "exit partial_power_down failed\n"); + } else { + pcgctl = readl(hsotg->regs + PCGCTL); + pcgctl &= ~PCGCTL_STOPPCLK; + writel(pcgctl, hsotg->regs + PCGCTL); + } hsotg->lx_state = DWC2_L0; @@ -4581,10 +4428,12 @@ static int _dwc2_hcd_resume(struct usb_hcd *hcd) spin_unlock_irqrestore(&hsotg->lock, flags); dwc2_port_resume(hsotg); } else { - dwc2_vbus_supply_init(hsotg); + if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_PARTIAL) { + dwc2_vbus_supply_init(hsotg); - /* Wait for controller to correctly update D+/D- level */ - usleep_range(3000, 5000); + /* Wait for controller to correctly update D+/D- level */ + usleep_range(3000, 5000); + } /* * Clear Port Enable and Port Status changes. @@ -5130,6 +4979,8 @@ static void dwc2_hcd_free(struct dwc2_hsotg *hsotg) destroy_workqueue(hsotg->wq_otg); } + cancel_work_sync(&hsotg->phy_reset_work); + del_timer(&hsotg->wkp_timer); } @@ -5271,11 +5122,10 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg) hsotg->hc_ptr_array[i] = channel; } - /* Initialize hsotg start work */ + /* Initialize work */ INIT_DELAYED_WORK(&hsotg->start_work, dwc2_hcd_start_func); - - /* Initialize port reset work */ INIT_DELAYED_WORK(&hsotg->reset_work, dwc2_hcd_reset_func); + INIT_WORK(&hsotg->phy_reset_work, dwc2_hcd_phy_reset_func); /* * Allocate space for storing data on status transactions. Normally no diff --git a/drivers/usb/dwc2/hw.h b/drivers/usb/dwc2/hw.h index 98af924a9a5c..510e87ec0be8 100644 --- a/drivers/usb/dwc2/hw.h +++ b/drivers/usb/dwc2/hw.h @@ -310,12 +310,12 @@ #define GHWCFG4_NUM_DEV_MODE_CTRL_EP_SHIFT 16 #define GHWCFG4_UTMI_PHY_DATA_WIDTH_MASK (0x3 << 14) #define GHWCFG4_UTMI_PHY_DATA_WIDTH_SHIFT 14 -#define GHWCFG4_ACG_SUPPORTED BIT(12) -#define GHWCFG4_IPG_ISOC_SUPPORTED BIT(11) -#define GHWCFG4_SERVICE_INTERVAL_SUPPORTED BIT(10) #define GHWCFG4_UTMI_PHY_DATA_WIDTH_8 0 #define GHWCFG4_UTMI_PHY_DATA_WIDTH_16 1 #define GHWCFG4_UTMI_PHY_DATA_WIDTH_8_OR_16 2 +#define GHWCFG4_ACG_SUPPORTED BIT(12) +#define GHWCFG4_IPG_ISOC_SUPPORTED BIT(11) +#define GHWCFG4_SERVICE_INTERVAL_SUPPORTED BIT(10) #define GHWCFG4_XHIBER BIT(7) #define GHWCFG4_HIBER BIT(6) #define GHWCFG4_MIN_AHB_FREQ BIT(5) @@ -333,7 +333,7 @@ #define GLPMCFG_SNDLPM BIT(24) #define GLPMCFG_RETRY_CNT_MASK (0x7 << 21) #define GLPMCFG_RETRY_CNT_SHIFT 21 -#define GLPMCFG_LPM_ACCEPT_CTRL_CONTROL BIT(21) +#define GLPMCFG_LPM_REJECT_CTRL_CONTROL BIT(21) #define GLPMCFG_LPM_ACCEPT_CTRL_ISOC BIT(22) #define GLPMCFG_LPM_CHNL_INDX_MASK (0xf << 17) #define GLPMCFG_LPM_CHNL_INDX_SHIFT 17 diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 24ff5f21cb25..6900eea57526 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -121,6 +121,16 @@ static void dwc2_set_amlogic_params(struct dwc2_hsotg *hsotg) p->power_down = DWC2_POWER_DOWN_PARAM_NONE; } +static void dwc2_set_amlogic_g12a_params(struct dwc2_hsotg *hsotg) +{ + struct dwc2_core_params *p = &hsotg->params; + + p->lpm = false; + p->lpm_clock_gating = false; + p->besl = false; + p->hird_threshold_en = false; +} + static void dwc2_set_amcc_params(struct dwc2_hsotg *hsotg) { struct dwc2_core_params *p = &hsotg->params; @@ -167,6 +177,8 @@ const struct of_device_id dwc2_of_match_table[] = { .data = dwc2_set_amlogic_params }, { .compatible = "amlogic,meson-gxbb-usb", .data = dwc2_set_amlogic_params }, + { .compatible = "amlogic,meson-g12a-usb", + .data = dwc2_set_amlogic_g12a_params }, { .compatible = "amcc,dwc-otg", .data = dwc2_set_amcc_params }, { .compatible = "st,stm32f4x9-fsotg", .data = dwc2_set_stm32f4x9_fsotg_params }, @@ -273,6 +285,23 @@ static void dwc2_set_param_power_down(struct dwc2_hsotg *hsotg) hsotg->params.power_down = val; } +static void dwc2_set_param_lpm(struct dwc2_hsotg *hsotg) +{ + struct dwc2_core_params *p = &hsotg->params; + + p->lpm = hsotg->hw_params.lpm_mode; + if (p->lpm) { + p->lpm_clock_gating = true; + p->besl = true; + p->hird_threshold_en = true; + p->hird_threshold = 4; + } else { + p->lpm_clock_gating = false; + p->besl = false; + p->hird_threshold_en = false; + } +} + /** * dwc2_set_default_params() - Set all core parameters to their * auto-detected default values. @@ -291,6 +320,7 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) dwc2_set_param_speed(hsotg); dwc2_set_param_phy_utmi_width(hsotg); dwc2_set_param_power_down(hsotg); + dwc2_set_param_lpm(hsotg); p->phy_ulpi_ddr = false; p->phy_ulpi_ext_vbus = false; @@ -303,11 +333,6 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) p->reload_ctl = (hw->snpsid >= DWC2_CORE_REV_2_92a); p->uframe_sched = true; p->external_id_pin_ctl = false; - p->lpm = true; - p->lpm_clock_gating = true; - p->besl = true; - p->hird_threshold_en = true; - p->hird_threshold = 4; p->ipg_isoc_en = false; p->service_interval = false; p->max_packet_count = hw->max_packet_count; diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 9aa9682a5cd2..d10a7f8daec3 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -230,9 +230,6 @@ static int dwc2_lowlevel_hw_init(struct dwc2_hsotg *hsotg) reset_control_deassert(hsotg->reset_ecc); - /* Set default UTMI width */ - hsotg->phyif = GUSBCFG_PHYIF16; - /* * Attempt to find a generic PHY, then look for an old style * USB PHY and then fall back to pdata @@ -280,7 +277,7 @@ static int dwc2_lowlevel_hw_init(struct dwc2_hsotg *hsotg) * width is 8-bit and set the phyif appropriately. */ if (phy_get_bus_width(hsotg->phy) == 8) - hsotg->phyif = GUSBCFG_PHYIF8; + hsotg->params.phy_utmi_width = 8; } /* Clock */ @@ -481,6 +478,15 @@ static int dwc2_driver_probe(struct platform_device *dev) hsotg->gadget_enabled = 1; } + hsotg->reset_phy_on_wake = + of_property_read_bool(dev->dev.of_node, + "snps,reset-phy-on-wake"); + if (hsotg->reset_phy_on_wake && !hsotg->phy) { + dev_warn(hsotg->dev, + "Quirk reset-phy-on-wake only supports generic PHYs\n"); + hsotg->reset_phy_on_wake = false; + } + if (hsotg->dr_mode != USB_DR_MODE_PERIPHERAL) { retval = dwc2_hcd_init(hsotg); if (retval) { diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index 784309435916..4a62045cc812 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -96,6 +96,16 @@ config USB_DWC3_KEYSTONE Support of USB2/3 functionality in TI Keystone2 and AM654 platforms. Say 'Y' or 'M' here if you have one such device +config USB_DWC3_MESON_G12A + tristate "Amlogic Meson G12A Platforms" + depends on OF && COMMON_CLK + depends on ARCH_MESON || COMPILE_TEST + default USB_DWC3 + select USB_ROLE_SWITCH + help + Support USB2/3 functionality in Amlogic G12A platforms. + Say 'Y' or 'M' if you have one such device. + config USB_DWC3_OF_SIMPLE tristate "Generic OF Simple Glue Layer" depends on OF && COMMON_CLK diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 6e3ef6144e5d..ae86da0dc5bd 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -47,6 +47,7 @@ obj-$(CONFIG_USB_DWC3_EXYNOS) += dwc3-exynos.o obj-$(CONFIG_USB_DWC3_PCI) += dwc3-pci.o obj-$(CONFIG_USB_DWC3_HAPS) += dwc3-haps.o obj-$(CONFIG_USB_DWC3_KEYSTONE) += dwc3-keystone.o +obj-$(CONFIG_USB_DWC3_MESON_G12A) += dwc3-meson-g12a.o obj-$(CONFIG_USB_DWC3_OF_SIMPLE) += dwc3-of-simple.o obj-$(CONFIG_USB_DWC3_ST) += dwc3-st.o obj-$(CONFIG_USB_DWC3_QCOM) += dwc3-qcom.o diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index a1b126f90261..4aff1d8dbc4f 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -828,6 +828,7 @@ static void dwc3_set_incr_burst_type(struct dwc3 *dwc) ret = device_property_read_u32_array(dev, "snps,incr-burst-type-adjustment", vals, ntype); if (ret) { + kfree(vals); dev_err(dev, "Error to get property\n"); return; } @@ -846,6 +847,8 @@ static void dwc3_set_incr_burst_type(struct dwc3 *dwc) incrx_mode = INCRX_BURST_MODE; } + kfree(vals); + /* Enable Undefined Length INCR Burst and Enable INCRx Burst */ cfg &= ~DWC3_GSBUSCFG0_INCRBRST_MASK; if (incrx_mode) @@ -893,12 +896,6 @@ static int dwc3_core_init(struct dwc3 *dwc) u32 reg; int ret; - if (!dwc3_core_is_valid(dwc)) { - dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n"); - ret = -ENODEV; - goto err0; - } - /* * Write Linux Version Code to our GUID register so it's easy to figure * out which kernel version a bug was found. @@ -1218,7 +1215,7 @@ static void dwc3_get_properties(struct dwc3 *dwc) u8 tx_max_burst_prd; /* default to highest possible threshold */ - lpm_nyet_threshold = 0xff; + lpm_nyet_threshold = 0xf; /* default to -3.5dB de-emphasis */ tx_de_emphasis = 1; @@ -1426,6 +1423,11 @@ static int dwc3_probe(struct platform_device *pdev) dwc->regs = regs; dwc->regs_size = resource_size(&dwc_res); + if (!dwc3_core_is_valid(dwc)) { + dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n"); + return -ENODEV; + } + dwc3_get_properties(dwc); dwc->reset = devm_reset_control_get_optional_shared(dev, NULL); @@ -1600,6 +1602,7 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg) spin_lock_irqsave(&dwc->lock, flags); dwc3_gadget_suspend(dwc); spin_unlock_irqrestore(&dwc->lock, flags); + synchronize_irq(dwc->irq_gadget); dwc3_core_exit(dwc); break; case DWC3_GCTL_PRTCAP_HOST: @@ -1632,6 +1635,7 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg) spin_lock_irqsave(&dwc->lock, flags); dwc3_gadget_suspend(dwc); spin_unlock_irqrestore(&dwc->lock, flags); + synchronize_irq(dwc->irq_gadget); } dwc3_otg_exit(dwc); diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 1528d395b156..f19cbeb01087 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -406,8 +406,7 @@ #define DWC3_DCTL_TRGTULST_SS_INACT (DWC3_DCTL_TRGTULST(6)) /* These apply for core versions 1.94a and later */ -#define DWC3_DCTL_LPM_ERRATA_MASK DWC3_DCTL_LPM_ERRATA(0xf) -#define DWC3_DCTL_LPM_ERRATA(n) ((n) << 20) +#define DWC3_DCTL_NYET_THRES(n) (((n) & 0xf) << 20) #define DWC3_DCTL_KEEP_CONNECT BIT(19) #define DWC3_DCTL_L1_HIBER_EN BIT(18) diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index 6759a7efd8d5..068259fdfb0c 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -250,6 +250,9 @@ static inline void dwc3_decode_get_status(__u8 t, __u16 i, __u16 l, char *str, size_t size) { switch (t & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + snprintf(str, size, "Get Device Status(Length = %d)", l); + break; case USB_RECIP_INTERFACE: snprintf(str, size, "Get Interface Status(Intf = %d, Length = %d)", i, l); diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c new file mode 100644 index 000000000000..2aec31a2eacb --- /dev/null +++ b/drivers/usb/dwc3/dwc3-meson-g12a.c @@ -0,0 +1,604 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * USB Glue for Amlogic G12A SoCs + * + * Copyright (c) 2019 BayLibre, SAS + * Author: Neil Armstrong <narmstrong@baylibre.com> + */ + +/* + * The USB is organized with a glue around the DWC3 Controller IP as : + * - Control registers for each USB2 Ports + * - Control registers for the USB PHY layer + * - SuperSpeed PHY can be enabled only if port is used + * + * TOFIX: + * - Add dynamic OTG switching with ID change interrupt + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/bitfield.h> +#include <linux/bitops.h> +#include <linux/reset.h> +#include <linux/phy/phy.h> +#include <linux/usb/otg.h> +#include <linux/usb/role.h> +#include <linux/regulator/consumer.h> + +/* USB2 Ports Control Registers */ + +#define U2P_REG_SIZE 0x20 + +#define U2P_R0 0x0 + #define U2P_R0_HOST_DEVICE BIT(0) + #define U2P_R0_POWER_OK BIT(1) + #define U2P_R0_HAST_MODE BIT(2) + #define U2P_R0_POWER_ON_RESET BIT(3) + #define U2P_R0_ID_PULLUP BIT(4) + #define U2P_R0_DRV_VBUS BIT(5) + +#define U2P_R1 0x4 + #define U2P_R1_PHY_READY BIT(0) + #define U2P_R1_ID_DIG BIT(1) + #define U2P_R1_OTG_SESSION_VALID BIT(2) + #define U2P_R1_VBUS_VALID BIT(3) + +/* USB Glue Control Registers */ + +#define USB_R0 0x80 + #define USB_R0_P30_LANE0_TX2RX_LOOPBACK BIT(17) + #define USB_R0_P30_LANE0_EXT_PCLK_REQ BIT(18) + #define USB_R0_P30_PCS_RX_LOS_MASK_VAL_MASK GENMASK(28, 19) + #define USB_R0_U2D_SS_SCALEDOWN_MODE_MASK GENMASK(30, 29) + #define USB_R0_U2D_ACT BIT(31) + +#define USB_R1 0x84 + #define USB_R1_U3H_BIGENDIAN_GS BIT(0) + #define USB_R1_U3H_PME_ENABLE BIT(1) + #define USB_R1_U3H_HUB_PORT_OVERCURRENT_MASK GENMASK(4, 2) + #define USB_R1_U3H_HUB_PORT_PERM_ATTACH_MASK GENMASK(9, 7) + #define USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK GENMASK(13, 12) + #define USB_R1_U3H_HOST_U3_PORT_DISABLE BIT(16) + #define USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT BIT(17) + #define USB_R1_U3H_HOST_MSI_ENABLE BIT(18) + #define USB_R1_U3H_FLADJ_30MHZ_REG_MASK GENMASK(24, 19) + #define USB_R1_P30_PCS_TX_SWING_FULL_MASK GENMASK(31, 25) + +#define USB_R2 0x88 + #define USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK GENMASK(25, 20) + #define USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK GENMASK(31, 26) + +#define USB_R3 0x8c + #define USB_R3_P30_SSC_ENABLE BIT(0) + #define USB_R3_P30_SSC_RANGE_MASK GENMASK(3, 1) + #define USB_R3_P30_SSC_REF_CLK_SEL_MASK GENMASK(12, 4) + #define USB_R3_P30_REF_SSP_EN BIT(13) + +#define USB_R4 0x90 + #define USB_R4_P21_PORT_RESET_0 BIT(0) + #define USB_R4_P21_SLEEP_M0 BIT(1) + #define USB_R4_MEM_PD_MASK GENMASK(3, 2) + #define USB_R4_P21_ONLY BIT(4) + +#define USB_R5 0x94 + #define USB_R5_ID_DIG_SYNC BIT(0) + #define USB_R5_ID_DIG_REG BIT(1) + #define USB_R5_ID_DIG_CFG_MASK GENMASK(3, 2) + #define USB_R5_ID_DIG_EN_0 BIT(4) + #define USB_R5_ID_DIG_EN_1 BIT(5) + #define USB_R5_ID_DIG_CURR BIT(6) + #define USB_R5_ID_DIG_IRQ BIT(7) + #define USB_R5_ID_DIG_TH_MASK GENMASK(15, 8) + #define USB_R5_ID_DIG_CNT_MASK GENMASK(23, 16) + +enum { + USB2_HOST_PHY = 0, + USB2_OTG_PHY, + USB3_HOST_PHY, + PHY_COUNT, +}; + +static const char *phy_names[PHY_COUNT] = { + "usb2-phy0", "usb2-phy1", "usb3-phy0", +}; + +struct dwc3_meson_g12a { + struct device *dev; + struct regmap *regmap; + struct clk *clk; + struct reset_control *reset; + struct phy *phys[PHY_COUNT]; + enum usb_dr_mode otg_mode; + enum phy_mode otg_phy_mode; + unsigned int usb2_ports; + unsigned int usb3_ports; + struct regulator *vbus; + struct usb_role_switch_desc switch_desc; + struct usb_role_switch *role_switch; +}; + +static void dwc3_meson_g12a_usb2_set_mode(struct dwc3_meson_g12a *priv, + int i, enum phy_mode mode) +{ + if (mode == PHY_MODE_USB_HOST) + regmap_update_bits(priv->regmap, U2P_R0 + (U2P_REG_SIZE * i), + U2P_R0_HOST_DEVICE, + U2P_R0_HOST_DEVICE); + else + regmap_update_bits(priv->regmap, U2P_R0 + (U2P_REG_SIZE * i), + U2P_R0_HOST_DEVICE, 0); +} + +static int dwc3_meson_g12a_usb2_init(struct dwc3_meson_g12a *priv) +{ + int i; + + if (priv->otg_mode == USB_DR_MODE_PERIPHERAL) + priv->otg_phy_mode = PHY_MODE_USB_DEVICE; + else + priv->otg_phy_mode = PHY_MODE_USB_HOST; + + for (i = 0 ; i < USB3_HOST_PHY ; ++i) { + if (!priv->phys[i]) + continue; + + regmap_update_bits(priv->regmap, U2P_R0 + (U2P_REG_SIZE * i), + U2P_R0_POWER_ON_RESET, + U2P_R0_POWER_ON_RESET); + + if (i == USB2_OTG_PHY) { + regmap_update_bits(priv->regmap, + U2P_R0 + (U2P_REG_SIZE * i), + U2P_R0_ID_PULLUP | U2P_R0_DRV_VBUS, + U2P_R0_ID_PULLUP | U2P_R0_DRV_VBUS); + + dwc3_meson_g12a_usb2_set_mode(priv, i, + priv->otg_phy_mode); + } else + dwc3_meson_g12a_usb2_set_mode(priv, i, + PHY_MODE_USB_HOST); + + regmap_update_bits(priv->regmap, U2P_R0 + (U2P_REG_SIZE * i), + U2P_R0_POWER_ON_RESET, 0); + } + + return 0; +} + +static void dwc3_meson_g12a_usb3_init(struct dwc3_meson_g12a *priv) +{ + regmap_update_bits(priv->regmap, USB_R3, + USB_R3_P30_SSC_RANGE_MASK | + USB_R3_P30_REF_SSP_EN, + USB_R3_P30_SSC_ENABLE | + FIELD_PREP(USB_R3_P30_SSC_RANGE_MASK, 2) | + USB_R3_P30_REF_SSP_EN); + udelay(2); + + regmap_update_bits(priv->regmap, USB_R2, + USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK, + FIELD_PREP(USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK, 0x15)); + + regmap_update_bits(priv->regmap, USB_R2, + USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK, + FIELD_PREP(USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK, 0x20)); + + udelay(2); + + regmap_update_bits(priv->regmap, USB_R1, + USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT, + USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT); + + regmap_update_bits(priv->regmap, USB_R1, + USB_R1_P30_PCS_TX_SWING_FULL_MASK, + FIELD_PREP(USB_R1_P30_PCS_TX_SWING_FULL_MASK, 127)); +} + +static void dwc3_meson_g12a_usb_otg_apply_mode(struct dwc3_meson_g12a *priv) +{ + if (priv->otg_phy_mode == PHY_MODE_USB_DEVICE) { + regmap_update_bits(priv->regmap, USB_R0, + USB_R0_U2D_ACT, USB_R0_U2D_ACT); + regmap_update_bits(priv->regmap, USB_R0, + USB_R0_U2D_SS_SCALEDOWN_MODE_MASK, 0); + regmap_update_bits(priv->regmap, USB_R4, + USB_R4_P21_SLEEP_M0, USB_R4_P21_SLEEP_M0); + } else { + regmap_update_bits(priv->regmap, USB_R0, + USB_R0_U2D_ACT, 0); + regmap_update_bits(priv->regmap, USB_R4, + USB_R4_P21_SLEEP_M0, 0); + } +} + +static int dwc3_meson_g12a_usb_init(struct dwc3_meson_g12a *priv) +{ + int ret; + + ret = dwc3_meson_g12a_usb2_init(priv); + if (ret) + return ret; + + regmap_update_bits(priv->regmap, USB_R1, + USB_R1_U3H_FLADJ_30MHZ_REG_MASK, + FIELD_PREP(USB_R1_U3H_FLADJ_30MHZ_REG_MASK, 0x20)); + + regmap_update_bits(priv->regmap, USB_R5, + USB_R5_ID_DIG_EN_0, + USB_R5_ID_DIG_EN_0); + regmap_update_bits(priv->regmap, USB_R5, + USB_R5_ID_DIG_EN_1, + USB_R5_ID_DIG_EN_1); + regmap_update_bits(priv->regmap, USB_R5, + USB_R5_ID_DIG_TH_MASK, + FIELD_PREP(USB_R5_ID_DIG_TH_MASK, 0xff)); + + /* If we have an actual SuperSpeed port, initialize it */ + if (priv->usb3_ports) + dwc3_meson_g12a_usb3_init(priv); + + dwc3_meson_g12a_usb_otg_apply_mode(priv); + + return 0; +} + +static const struct regmap_config phy_meson_g12a_usb3_regmap_conf = { + .reg_bits = 8, + .val_bits = 32, + .reg_stride = 4, + .max_register = USB_R5, +}; + +static int dwc3_meson_g12a_get_phys(struct dwc3_meson_g12a *priv) +{ + int i; + + for (i = 0 ; i < PHY_COUNT ; ++i) { + priv->phys[i] = devm_phy_optional_get(priv->dev, phy_names[i]); + if (!priv->phys[i]) + continue; + + if (IS_ERR(priv->phys[i])) + return PTR_ERR(priv->phys[i]); + + if (i == USB3_HOST_PHY) + priv->usb3_ports++; + else + priv->usb2_ports++; + } + + dev_info(priv->dev, "USB2 ports: %d\n", priv->usb2_ports); + dev_info(priv->dev, "USB3 ports: %d\n", priv->usb3_ports); + + return 0; +} + +static enum phy_mode dwc3_meson_g12a_get_id(struct dwc3_meson_g12a *priv) +{ + u32 reg; + + regmap_read(priv->regmap, USB_R5, ®); + + if (reg & (USB_R5_ID_DIG_SYNC | USB_R5_ID_DIG_REG)) + return PHY_MODE_USB_DEVICE; + + return PHY_MODE_USB_HOST; +} + +static int dwc3_meson_g12a_otg_mode_set(struct dwc3_meson_g12a *priv, + enum phy_mode mode) +{ + int ret; + + if (!priv->phys[USB2_OTG_PHY]) + return -EINVAL; + + if (mode == PHY_MODE_USB_HOST) + dev_info(priv->dev, "switching to Host Mode\n"); + else + dev_info(priv->dev, "switching to Device Mode\n"); + + if (priv->vbus) { + if (mode == PHY_MODE_USB_DEVICE) + ret = regulator_disable(priv->vbus); + else + ret = regulator_enable(priv->vbus); + if (ret) + return ret; + } + + priv->otg_phy_mode = mode; + + dwc3_meson_g12a_usb2_set_mode(priv, USB2_OTG_PHY, mode); + + dwc3_meson_g12a_usb_otg_apply_mode(priv); + + return 0; +} + +static int dwc3_meson_g12a_role_set(struct device *dev, enum usb_role role) +{ + struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); + enum phy_mode mode; + + if (role == USB_ROLE_NONE) + return 0; + + mode = (role == USB_ROLE_HOST) ? PHY_MODE_USB_HOST + : PHY_MODE_USB_DEVICE; + + if (mode == priv->otg_phy_mode) + return 0; + + return dwc3_meson_g12a_otg_mode_set(priv, mode); +} + +static enum usb_role dwc3_meson_g12a_role_get(struct device *dev) +{ + struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); + + return priv->otg_phy_mode == PHY_MODE_USB_HOST ? + USB_ROLE_HOST : USB_ROLE_DEVICE; +} + +static struct device *dwc3_meson_g12_find_child(struct device *dev, + const char *compatible) +{ + struct platform_device *pdev; + struct device_node *np; + + np = of_get_compatible_child(dev->of_node, compatible); + if (!np) + return NULL; + + pdev = of_find_device_by_node(np); + of_node_put(np); + if (!pdev) + return NULL; + + return &pdev->dev; +} + +static int dwc3_meson_g12a_probe(struct platform_device *pdev) +{ + struct dwc3_meson_g12a *priv; + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + void __iomem *base; + struct resource *res; + enum phy_mode otg_id; + int ret, i; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + priv->regmap = devm_regmap_init_mmio(dev, base, + &phy_meson_g12a_usb3_regmap_conf); + if (IS_ERR(priv->regmap)) + return PTR_ERR(priv->regmap); + + priv->vbus = devm_regulator_get_optional(dev, "vbus"); + if (IS_ERR(priv->vbus)) { + if (PTR_ERR(priv->vbus) == -EPROBE_DEFER) + return PTR_ERR(priv->vbus); + priv->vbus = NULL; + } + + priv->clk = devm_clk_get(dev, NULL); + if (IS_ERR(priv->clk)) + return PTR_ERR(priv->clk); + + ret = clk_prepare_enable(priv->clk); + if (ret) + return ret; + + devm_add_action_or_reset(dev, + (void(*)(void *))clk_disable_unprepare, + priv->clk); + + platform_set_drvdata(pdev, priv); + priv->dev = dev; + + priv->reset = devm_reset_control_get(dev, NULL); + if (IS_ERR(priv->reset)) { + ret = PTR_ERR(priv->reset); + dev_err(dev, "failed to get device reset, err=%d\n", ret); + return ret; + } + + ret = reset_control_reset(priv->reset); + if (ret) + return ret; + + ret = dwc3_meson_g12a_get_phys(priv); + if (ret) + return ret; + + if (priv->vbus) { + ret = regulator_enable(priv->vbus); + if (ret) + return ret; + } + + /* Get dr_mode */ + priv->otg_mode = usb_get_dr_mode(dev); + + dwc3_meson_g12a_usb_init(priv); + + /* Init PHYs */ + for (i = 0 ; i < PHY_COUNT ; ++i) { + ret = phy_init(priv->phys[i]); + if (ret) + return ret; + } + + /* Set PHY Power */ + for (i = 0 ; i < PHY_COUNT ; ++i) { + ret = phy_power_on(priv->phys[i]); + if (ret) + goto err_phys_exit; + } + + ret = of_platform_populate(np, NULL, NULL, dev); + if (ret) { + clk_disable_unprepare(priv->clk); + goto err_phys_power; + } + + /* Setup OTG mode corresponding to the ID pin */ + if (priv->otg_mode == USB_DR_MODE_OTG) { + /* TOFIX Handle ID mode toggling via IRQ */ + otg_id = dwc3_meson_g12a_get_id(priv); + if (otg_id != priv->otg_phy_mode) { + if (dwc3_meson_g12a_otg_mode_set(priv, otg_id)) + dev_warn(dev, "Failed to switch OTG mode\n"); + } + } + + /* Setup role switcher */ + priv->switch_desc.usb2_port = dwc3_meson_g12_find_child(dev, + "snps,dwc3"); + priv->switch_desc.udc = dwc3_meson_g12_find_child(dev, "snps,dwc2"); + priv->switch_desc.allow_userspace_control = true; + priv->switch_desc.set = dwc3_meson_g12a_role_set; + priv->switch_desc.get = dwc3_meson_g12a_role_get; + + priv->role_switch = usb_role_switch_register(dev, &priv->switch_desc); + if (IS_ERR(priv->role_switch)) + dev_warn(dev, "Unable to register Role Switch\n"); + + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + pm_runtime_get_sync(dev); + + return 0; + +err_phys_power: + for (i = 0 ; i < PHY_COUNT ; ++i) + phy_power_off(priv->phys[i]); + +err_phys_exit: + for (i = 0 ; i < PHY_COUNT ; ++i) + phy_exit(priv->phys[i]); + + return ret; +} + +static int dwc3_meson_g12a_remove(struct platform_device *pdev) +{ + struct dwc3_meson_g12a *priv = platform_get_drvdata(pdev); + struct device *dev = &pdev->dev; + int i; + + usb_role_switch_unregister(priv->role_switch); + + of_platform_depopulate(dev); + + for (i = 0 ; i < PHY_COUNT ; ++i) { + phy_power_off(priv->phys[i]); + phy_exit(priv->phys[i]); + } + + pm_runtime_disable(dev); + pm_runtime_put_noidle(dev); + pm_runtime_set_suspended(dev); + + return 0; +} + +static int __maybe_unused dwc3_meson_g12a_runtime_suspend(struct device *dev) +{ + struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); + + clk_disable(priv->clk); + + return 0; +} + +static int __maybe_unused dwc3_meson_g12a_runtime_resume(struct device *dev) +{ + struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); + + return clk_enable(priv->clk); +} + +static int __maybe_unused dwc3_meson_g12a_suspend(struct device *dev) +{ + struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); + int i; + + for (i = 0 ; i < PHY_COUNT ; ++i) { + phy_power_off(priv->phys[i]); + phy_exit(priv->phys[i]); + } + + reset_control_assert(priv->reset); + + return 0; +} + +static int __maybe_unused dwc3_meson_g12a_resume(struct device *dev) +{ + struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); + int i, ret; + + reset_control_deassert(priv->reset); + + dwc3_meson_g12a_usb_init(priv); + + /* Init PHYs */ + for (i = 0 ; i < PHY_COUNT ; ++i) { + ret = phy_init(priv->phys[i]); + if (ret) + return ret; + } + + /* Set PHY Power */ + for (i = 0 ; i < PHY_COUNT ; ++i) { + ret = phy_power_on(priv->phys[i]); + if (ret) + return ret; + } + + return 0; +} + +static const struct dev_pm_ops dwc3_meson_g12a_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(dwc3_meson_g12a_suspend, dwc3_meson_g12a_resume) + SET_RUNTIME_PM_OPS(dwc3_meson_g12a_runtime_suspend, + dwc3_meson_g12a_runtime_resume, NULL) +}; + +static const struct of_device_id dwc3_meson_g12a_match[] = { + { .compatible = "amlogic,meson-g12a-usb-ctrl" }, + { /* Sentinel */ } +}; +MODULE_DEVICE_TABLE(of, dwc3_meson_g12a_match); + +static struct platform_driver dwc3_meson_g12a_driver = { + .probe = dwc3_meson_g12a_probe, + .remove = dwc3_meson_g12a_remove, + .driver = { + .name = "dwc3-meson-g12a", + .of_match_table = dwc3_meson_g12a_match, + .pm = &dwc3_meson_g12a_dev_pm_ops, + }, +}; + +module_platform_driver(dwc3_meson_g12a_driver); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Amlogic Meson G12A USB Glue Layer"); +MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c index 4c2771c5e727..c4da82dd15c7 100644 --- a/drivers/usb/dwc3/dwc3-of-simple.c +++ b/drivers/usb/dwc3/dwc3-of-simple.c @@ -24,59 +24,13 @@ struct dwc3_of_simple { struct device *dev; - struct clk **clks; + struct clk_bulk_data *clks; int num_clocks; struct reset_control *resets; bool pulse_resets; bool need_reset; }; -static int dwc3_of_simple_clk_init(struct dwc3_of_simple *simple, int count) -{ - struct device *dev = simple->dev; - struct device_node *np = dev->of_node; - int i; - - simple->num_clocks = count; - - if (!count) - return 0; - - simple->clks = devm_kcalloc(dev, simple->num_clocks, - sizeof(struct clk *), GFP_KERNEL); - if (!simple->clks) - return -ENOMEM; - - for (i = 0; i < simple->num_clocks; i++) { - struct clk *clk; - int ret; - - clk = of_clk_get(np, i); - if (IS_ERR(clk)) { - while (--i >= 0) { - clk_disable_unprepare(simple->clks[i]); - clk_put(simple->clks[i]); - } - return PTR_ERR(clk); - } - - ret = clk_prepare_enable(clk); - if (ret < 0) { - while (--i >= 0) { - clk_disable_unprepare(simple->clks[i]); - clk_put(simple->clks[i]); - } - clk_put(clk); - - return ret; - } - - simple->clks[i] = clk; - } - - return 0; -} - static int dwc3_of_simple_probe(struct platform_device *pdev) { struct dwc3_of_simple *simple; @@ -84,7 +38,6 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) struct device_node *np = dev->of_node; int ret; - int i; bool shared_resets = false; simple = devm_kzalloc(dev, sizeof(*simple), GFP_KERNEL); @@ -124,20 +77,18 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) goto err_resetc_put; } - ret = dwc3_of_simple_clk_init(simple, of_count_phandle_with_args(np, - "clocks", "#clock-cells")); + ret = clk_bulk_get_all(simple->dev, &simple->clks); + if (ret < 0) + goto err_resetc_assert; + + simple->num_clocks = ret; + ret = clk_bulk_prepare_enable(simple->num_clocks, simple->clks); if (ret) goto err_resetc_assert; ret = of_platform_populate(np, NULL, NULL, dev); - if (ret) { - for (i = 0; i < simple->num_clocks; i++) { - clk_disable_unprepare(simple->clks[i]); - clk_put(simple->clks[i]); - } - - goto err_resetc_assert; - } + if (ret) + goto err_clk_put; pm_runtime_set_active(dev); pm_runtime_enable(dev); @@ -145,6 +96,10 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) return 0; +err_clk_put: + clk_bulk_disable_unprepare(simple->num_clocks, simple->clks); + clk_bulk_put_all(simple->num_clocks, simple->clks); + err_resetc_assert: if (!simple->pulse_resets) reset_control_assert(simple->resets); @@ -158,14 +113,11 @@ static int dwc3_of_simple_remove(struct platform_device *pdev) { struct dwc3_of_simple *simple = platform_get_drvdata(pdev); struct device *dev = &pdev->dev; - int i; of_platform_depopulate(dev); - for (i = 0; i < simple->num_clocks; i++) { - clk_disable_unprepare(simple->clks[i]); - clk_put(simple->clks[i]); - } + clk_bulk_disable_unprepare(simple->num_clocks, simple->clks); + clk_bulk_put_all(simple->num_clocks, simple->clks); simple->num_clocks = 0; if (!simple->pulse_resets) @@ -183,10 +135,8 @@ static int dwc3_of_simple_remove(struct platform_device *pdev) static int __maybe_unused dwc3_of_simple_runtime_suspend(struct device *dev) { struct dwc3_of_simple *simple = dev_get_drvdata(dev); - int i; - for (i = 0; i < simple->num_clocks; i++) - clk_disable(simple->clks[i]); + clk_bulk_disable(simple->num_clocks, simple->clks); return 0; } @@ -194,19 +144,8 @@ static int __maybe_unused dwc3_of_simple_runtime_suspend(struct device *dev) static int __maybe_unused dwc3_of_simple_runtime_resume(struct device *dev) { struct dwc3_of_simple *simple = dev_get_drvdata(dev); - int ret; - int i; - - for (i = 0; i < simple->num_clocks; i++) { - ret = clk_enable(simple->clks[i]); - if (ret < 0) { - while (--i >= 0) - clk_disable(simple->clks[i]); - return ret; - } - } - return 0; + return clk_bulk_enable(simple->num_clocks, simple->clks); } static int __maybe_unused dwc3_of_simple_suspend(struct device *dev) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index e293400cc6e9..d67655384eb2 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2863,7 +2863,7 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) "LPM Erratum not available on dwc3 revisions < 2.40a\n"); if (dwc->has_lpm_erratum && dwc->revision >= DWC3_REVISION_240A) - reg |= DWC3_DCTL_LPM_ERRATA(dwc->lpm_nyet_threshold); + reg |= DWC3_DCTL_NYET_THRES(dwc->lpm_nyet_threshold); dwc3_writel(dwc->regs, DWC3_DCTL, reg); } else { @@ -3301,6 +3301,7 @@ int dwc3_gadget_init(struct dwc3 *dwc) dwc->gadget.sg_supported = true; dwc->gadget.name = "dwc3-gadget"; dwc->gadget.is_otg = dwc->dr_mode == USB_DR_MODE_OTG; + dwc->gadget.lpm_capable = true; /* * FIXME We might be setting max_speed to <SUPER, however versions @@ -3384,8 +3385,6 @@ int dwc3_gadget_suspend(struct dwc3 *dwc) dwc3_disconnect_gadget(dwc); __dwc3_gadget_stop(dwc); - synchronize_irq(dwc->irq_gadget); - return 0; } diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 20413c276c61..47be961f1bf3 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -1133,7 +1133,8 @@ error_lock: error_mutex: mutex_unlock(&epfile->mutex); error: - ffs_free_buffer(io_data); + if (ret != -EIOCBQUEUED) /* don't free if there is iocb queued */ + ffs_free_buffer(io_data); return ret; } diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index 5780fba620ab..2d6e76e4cffa 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -23,6 +23,7 @@ #include "u_ether.h" #include "u_ether_configfs.h" #include "u_ncm.h" +#include "configfs.h" /* * This function is a "CDC Network Control Model" (CDC NCM) Ethernet link. @@ -35,9 +36,7 @@ /* to trigger crc/non-crc ndp signature */ -#define NCM_NDP_HDR_CRC_MASK 0x01000000 #define NCM_NDP_HDR_CRC 0x01000000 -#define NCM_NDP_HDR_NOCRC 0x00000000 enum ncm_notify_state { NCM_NOTIFY_NONE, /* don't notify */ @@ -526,6 +525,7 @@ static inline void ncm_reset_values(struct f_ncm *ncm) { ncm->parser_opts = &ndp16_opts; ncm->is_crc = false; + ncm->ndp_sign = ncm->parser_opts->ndp_sign; ncm->port.cdc_filter = DEFAULT_FILTER; /* doesn't make sense for ncm, fixed size used */ @@ -805,25 +805,20 @@ static int ncm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) | USB_CDC_SET_CRC_MODE: { - int ndp_hdr_crc = 0; - if (w_length != 0 || w_index != ncm->ctrl_id) goto invalid; switch (w_value) { case 0x0000: ncm->is_crc = false; - ndp_hdr_crc = NCM_NDP_HDR_NOCRC; DBG(cdev, "non-CRC mode selected\n"); break; case 0x0001: ncm->is_crc = true; - ndp_hdr_crc = NCM_NDP_HDR_CRC; DBG(cdev, "CRC mode selected\n"); break; default: goto invalid; } - ncm->ndp_sign = ncm->parser_opts->ndp_sign | ndp_hdr_crc; value = 0; break; } @@ -840,6 +835,8 @@ invalid: ctrl->bRequestType, ctrl->bRequest, w_value, w_index, w_length); } + ncm->ndp_sign = ncm->parser_opts->ndp_sign | + (ncm->is_crc ? NCM_NDP_HDR_CRC : 0); /* respond with data transfer or status phase? */ if (value >= 0) { @@ -1395,6 +1392,16 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) return -EINVAL; ncm_opts = container_of(f->fi, struct f_ncm_opts, func_inst); + + if (cdev->use_os_string) { + f->os_desc_table = kzalloc(sizeof(*f->os_desc_table), + GFP_KERNEL); + if (!f->os_desc_table) + return -ENOMEM; + f->os_desc_n = 1; + f->os_desc_table[0].os_desc = &ncm_opts->ncm_os_desc; + } + /* * in drivers/usb/gadget/configfs.c:configfs_composite_bind() * configurations are bound in sequence with list_for_each_entry, @@ -1408,13 +1415,15 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) status = gether_register_netdev(ncm_opts->net); mutex_unlock(&ncm_opts->lock); if (status) - return status; + goto fail; ncm_opts->bound = true; } us = usb_gstrings_attach(cdev, ncm_strings, ARRAY_SIZE(ncm_string_defs)); - if (IS_ERR(us)) - return PTR_ERR(us); + if (IS_ERR(us)) { + status = PTR_ERR(us); + goto fail; + } ncm_control_intf.iInterface = us[STRING_CTRL_IDX].id; ncm_data_nop_intf.iInterface = us[STRING_DATA_IDX].id; ncm_data_intf.iInterface = us[STRING_DATA_IDX].id; @@ -1431,6 +1440,10 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) ncm_control_intf.bInterfaceNumber = status; ncm_union_desc.bMasterInterface0 = status; + if (cdev->use_os_string) + f->os_desc_table[0].if_id = + ncm_iad_desc.bFirstInterface; + status = usb_interface_id(c, f); if (status < 0) goto fail; @@ -1510,6 +1523,9 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) return 0; fail: + kfree(f->os_desc_table); + f->os_desc_n = 0; + if (ncm->notify_req) { kfree(ncm->notify_req->buf); usb_ep_free_request(ncm->notify, ncm->notify_req); @@ -1564,16 +1580,22 @@ static void ncm_free_inst(struct usb_function_instance *f) gether_cleanup(netdev_priv(opts->net)); else free_netdev(opts->net); + kfree(opts->ncm_interf_group); kfree(opts); } static struct usb_function_instance *ncm_alloc_inst(void) { struct f_ncm_opts *opts; + struct usb_os_desc *descs[1]; + char *names[1]; + struct config_group *ncm_interf_group; opts = kzalloc(sizeof(*opts), GFP_KERNEL); if (!opts) return ERR_PTR(-ENOMEM); + opts->ncm_os_desc.ext_compat_id = opts->ncm_ext_compat_id; + mutex_init(&opts->lock); opts->func_inst.free_func_inst = ncm_free_inst; opts->net = gether_setup_default(); @@ -1582,8 +1604,20 @@ static struct usb_function_instance *ncm_alloc_inst(void) kfree(opts); return ERR_CAST(net); } + INIT_LIST_HEAD(&opts->ncm_os_desc.ext_prop); + + descs[0] = &opts->ncm_os_desc; + names[0] = "ncm"; config_group_init_type_name(&opts->func_inst.group, "", &ncm_func_type); + ncm_interf_group = + usb_os_desc_prepare_interf_dir(&opts->func_inst.group, 1, descs, + names, THIS_MODULE); + if (IS_ERR(ncm_interf_group)) { + ncm_free_inst(&opts->func_inst); + return ERR_CAST(ncm_interf_group); + } + opts->ncm_interf_group = ncm_interf_group; return &opts->func_inst; } @@ -1609,6 +1643,9 @@ static void ncm_unbind(struct usb_configuration *c, struct usb_function *f) hrtimer_cancel(&ncm->task_timer); + kfree(f->os_desc_table); + f->os_desc_n = 0; + ncm_string_defs[0].id = 0; usb_free_all_descriptors(f); diff --git a/drivers/usb/gadget/function/f_uac1_legacy.c b/drivers/usb/gadget/function/f_uac1_legacy.c index 24c086bcdeaa..6677ae932de0 100644 --- a/drivers/usb/gadget/function/f_uac1_legacy.c +++ b/drivers/usb/gadget/function/f_uac1_legacy.c @@ -54,8 +54,8 @@ static struct uac1_ac_header_descriptor_1 ac_header_desc = { .bLength = UAC_DT_AC_HEADER_LENGTH, .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubtype = UAC_HEADER, - .bcdADC = __constant_cpu_to_le16(0x0100), - .wTotalLength = __constant_cpu_to_le16(UAC_DT_TOTAL_LENGTH), + .bcdADC = cpu_to_le16(0x0100), + .wTotalLength = cpu_to_le16(UAC_DT_TOTAL_LENGTH), .bInCollection = F_AUDIO_NUM_INTERFACES, .baInterfaceNr = { /* Interface number of the first AudioStream interface */ @@ -183,7 +183,7 @@ static struct uac_iso_endpoint_descriptor as_iso_out_desc = { .bDescriptorSubtype = UAC_EP_GENERAL, .bmAttributes = 1, .bLockDelayUnits = 1, - .wLockDelay = __constant_cpu_to_le16(1), + .wLockDelay = cpu_to_le16(1), }; static struct usb_descriptor_header *f_audio_desc[] = { diff --git a/drivers/usb/gadget/function/u_ncm.h b/drivers/usb/gadget/function/u_ncm.h index d483e45c0f77..70da3201a1d0 100644 --- a/drivers/usb/gadget/function/u_ncm.h +++ b/drivers/usb/gadget/function/u_ncm.h @@ -20,6 +20,9 @@ struct f_ncm_opts { struct net_device *net; bool bound; + struct config_group *ncm_interf_group; + struct usb_os_desc ncm_os_desc; + char ncm_ext_compat_id[16]; /* * Read/write access to configfs attributes is handled by configfs. * diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 660712e0bf98..503d275bc4c4 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -358,8 +358,20 @@ static inline u32 usba_int_enb_get(struct usba_udc *udc) return udc->int_enb_cache; } -static inline void usba_int_enb_set(struct usba_udc *udc, u32 val) +static inline void usba_int_enb_set(struct usba_udc *udc, u32 mask) { + u32 val; + + val = udc->int_enb_cache | mask; + usba_writel(udc, INT_ENB, val); + udc->int_enb_cache = val; +} + +static inline void usba_int_enb_clear(struct usba_udc *udc, u32 mask) +{ + u32 val; + + val = udc->int_enb_cache & ~mask; usba_writel(udc, INT_ENB, val); udc->int_enb_cache = val; } @@ -629,14 +641,12 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) if (ep->can_dma) { u32 ctrl; - usba_int_enb_set(udc, usba_int_enb_get(udc) | - USBA_BF(EPT_INT, 1 << ep->index) | + usba_int_enb_set(udc, USBA_BF(EPT_INT, 1 << ep->index) | USBA_BF(DMA_INT, 1 << ep->index)); ctrl = USBA_AUTO_VALID | USBA_INTDIS_DMA; usba_ep_writel(ep, CTL_ENB, ctrl); } else { - usba_int_enb_set(udc, usba_int_enb_get(udc) | - USBA_BF(EPT_INT, 1 << ep->index)); + usba_int_enb_set(udc, USBA_BF(EPT_INT, 1 << ep->index)); } spin_unlock_irqrestore(&udc->lock, flags); @@ -680,8 +690,7 @@ static int usba_ep_disable(struct usb_ep *_ep) usba_dma_readl(ep, STATUS); } usba_ep_writel(ep, CTL_DIS, USBA_EPT_ENABLE); - usba_int_enb_set(udc, usba_int_enb_get(udc) & - ~USBA_BF(EPT_INT, 1 << ep->index)); + usba_int_enb_clear(udc, USBA_BF(EPT_INT, 1 << ep->index)); request_complete_list(ep, &req_list, -ESHUTDOWN); @@ -1694,6 +1703,9 @@ static void usba_dma_irq(struct usba_udc *udc, struct usba_ep *ep) } } +static int start_clock(struct usba_udc *udc); +static void stop_clock(struct usba_udc *udc); + static irqreturn_t usba_udc_irq(int irq, void *devid) { struct usba_udc *udc = devid; @@ -1708,10 +1720,13 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) DBG(DBG_INT, "irq, status=%#08x\n", status); if (status & USBA_DET_SUSPEND) { + usba_writel(udc, INT_CLR, USBA_DET_SUSPEND|USBA_WAKE_UP); + usba_int_enb_set(udc, USBA_WAKE_UP); + usba_int_enb_clear(udc, USBA_DET_SUSPEND); + udc->suspended = true; toggle_bias(udc, 0); - usba_writel(udc, INT_CLR, USBA_DET_SUSPEND); - usba_int_enb_set(udc, int_enb | USBA_WAKE_UP); udc->bias_pulse_needed = true; + stop_clock(udc); DBG(DBG_BUS, "Suspend detected\n"); if (udc->gadget.speed != USB_SPEED_UNKNOWN && udc->driver && udc->driver->suspend) { @@ -1722,14 +1737,17 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) } if (status & USBA_WAKE_UP) { + start_clock(udc); toggle_bias(udc, 1); usba_writel(udc, INT_CLR, USBA_WAKE_UP); - usba_int_enb_set(udc, int_enb & ~USBA_WAKE_UP); DBG(DBG_BUS, "Wake Up CPU detected\n"); } if (status & USBA_END_OF_RESUME) { + udc->suspended = false; usba_writel(udc, INT_CLR, USBA_END_OF_RESUME); + usba_int_enb_clear(udc, USBA_WAKE_UP); + usba_int_enb_set(udc, USBA_DET_SUSPEND); generate_bias_pulse(udc); DBG(DBG_BUS, "Resume detected\n"); if (udc->gadget.speed != USB_SPEED_UNKNOWN @@ -1744,6 +1762,8 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) if (dma_status) { int i; + usba_int_enb_set(udc, USBA_DET_SUSPEND); + for (i = 1; i <= USBA_NR_DMAS; i++) if (dma_status & (1 << i)) usba_dma_irq(udc, &udc->usba_ep[i]); @@ -1753,6 +1773,8 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) if (ep_status) { int i; + usba_int_enb_set(udc, USBA_DET_SUSPEND); + for (i = 0; i < udc->num_ep; i++) if (ep_status & (1 << i)) { if (ep_is_control(&udc->usba_ep[i])) @@ -1766,7 +1788,9 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) struct usba_ep *ep0, *ep; int i, n; - usba_writel(udc, INT_CLR, USBA_END_OF_RESET); + usba_writel(udc, INT_CLR, + USBA_END_OF_RESET|USBA_END_OF_RESUME + |USBA_DET_SUSPEND|USBA_WAKE_UP); generate_bias_pulse(udc); reset_all_endpoints(udc); @@ -1793,7 +1817,12 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) | USBA_BF(BK_NUMBER, USBA_BK_NUMBER_ONE))); usba_ep_writel(ep0, CTL_ENB, USBA_EPT_ENABLE | USBA_RX_SETUP); - usba_int_enb_set(udc, int_enb | USBA_BF(EPT_INT, 1) | + + /* If we get reset while suspended... */ + udc->suspended = false; + usba_int_enb_clear(udc, USBA_WAKE_UP); + + usba_int_enb_set(udc, USBA_BF(EPT_INT, 1) | USBA_DET_SUSPEND | USBA_END_OF_RESUME); /* @@ -1827,6 +1856,8 @@ static int start_clock(struct usba_udc *udc) if (udc->clocked) return 0; + pm_stay_awake(&udc->pdev->dev); + ret = clk_prepare_enable(udc->pclk); if (ret) return ret; @@ -1849,6 +1880,8 @@ static void stop_clock(struct usba_udc *udc) clk_disable_unprepare(udc->pclk); udc->clocked = false; + + pm_relax(&udc->pdev->dev); } static int usba_start(struct usba_udc *udc) @@ -1860,9 +1893,19 @@ static int usba_start(struct usba_udc *udc) if (ret) return ret; + if (udc->suspended) + return 0; + spin_lock_irqsave(&udc->lock, flags); toggle_bias(udc, 1); usba_writel(udc, CTRL, USBA_ENABLE_MASK); + /* Clear all requested and pending interrupts... */ + usba_writel(udc, INT_ENB, 0); + udc->int_enb_cache = 0; + usba_writel(udc, INT_CLR, + USBA_END_OF_RESET|USBA_END_OF_RESUME + |USBA_DET_SUSPEND|USBA_WAKE_UP); + /* ...and enable just 'reset' IRQ to get us started */ usba_int_enb_set(udc, USBA_END_OF_RESET); spin_unlock_irqrestore(&udc->lock, flags); @@ -1873,6 +1916,9 @@ static void usba_stop(struct usba_udc *udc) { unsigned long flags; + if (udc->suspended) + return; + spin_lock_irqsave(&udc->lock, flags); udc->gadget.speed = USB_SPEED_UNKNOWN; reset_all_endpoints(udc); @@ -1900,6 +1946,7 @@ static irqreturn_t usba_vbus_irq_thread(int irq, void *devid) if (vbus) { usba_start(udc); } else { + udc->suspended = false; usba_stop(udc); if (udc->driver->disconnect) @@ -1963,6 +2010,7 @@ static int atmel_usba_stop(struct usb_gadget *gadget) if (fifo_mode == 0) udc->configured_ep = 1; + udc->suspended = false; usba_stop(udc); udc->driver = NULL; @@ -2276,6 +2324,7 @@ static int usba_udc_suspend(struct device *dev) mutex_lock(&udc->vbus_mutex); if (!device_may_wakeup(dev)) { + udc->suspended = false; usba_stop(udc); goto out; } @@ -2285,10 +2334,13 @@ static int usba_udc_suspend(struct device *dev) * to request vbus irq, assuming always on. */ if (udc->vbus_pin) { + /* FIXME: right to stop here...??? */ usba_stop(udc); enable_irq_wake(gpiod_to_irq(udc->vbus_pin)); } + enable_irq_wake(udc->irq); + out: mutex_unlock(&udc->vbus_mutex); return 0; @@ -2302,8 +2354,12 @@ static int usba_udc_resume(struct device *dev) if (!udc->driver) return 0; - if (device_may_wakeup(dev) && udc->vbus_pin) - disable_irq_wake(gpiod_to_irq(udc->vbus_pin)); + if (device_may_wakeup(dev)) { + if (udc->vbus_pin) + disable_irq_wake(gpiod_to_irq(udc->vbus_pin)); + + disable_irq_wake(udc->irq); + } /* If Vbus is present, enable the controller and wait for reset */ mutex_lock(&udc->vbus_mutex); diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.h b/drivers/usb/gadget/udc/atmel_usba_udc.h index 030bf797cd25..a0225e4543d4 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.h +++ b/drivers/usb/gadget/udc/atmel_usba_udc.h @@ -331,6 +331,7 @@ struct usba_udc { struct usba_ep *usba_ep; bool bias_pulse_needed; bool clocked; + bool suspended; u16 devstatus; diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index 40c6a484e232..8414fac74493 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -965,8 +965,18 @@ static int dummy_udc_start(struct usb_gadget *g, struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); struct dummy *dum = dum_hcd->dum; - if (driver->max_speed == USB_SPEED_UNKNOWN) + switch (g->speed) { + /* All the speeds we support */ + case USB_SPEED_LOW: + case USB_SPEED_FULL: + case USB_SPEED_HIGH: + case USB_SPEED_SUPER: + break; + default: + dev_err(dummy_dev(dum_hcd), "Unsupported driver max speed %d\n", + driver->max_speed); return -EINVAL; + } /* * SLAVE side init ... the layer above hardware, which @@ -1770,9 +1780,10 @@ static void dummy_timer(struct timer_list *t) /* Bus speed is 500000 bytes/ms, so use a little less */ total = 490000; break; - default: + default: /* Can't happen */ dev_err(dummy_dev(dum_hcd), "bogus device speed\n"); - return; + total = 0; + break; } /* FIXME if HZ != 1000 this will probably misbehave ... */ @@ -1814,7 +1825,7 @@ restart: /* Used up this frame's bandwidth? */ if (total <= 0) - break; + continue; /* find the gadget's ep for this request (if configured) */ address = usb_pipeendpoint (urb->pipe); diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c index b0781771704e..d8f1c60793ed 100644 --- a/drivers/usb/gadget/udc/lpc32xx_udc.c +++ b/drivers/usb/gadget/udc/lpc32xx_udc.c @@ -115,6 +115,11 @@ struct lpc32xx_ep { bool wedge; }; +enum atx_type { + ISP1301, + STOTG04, +}; + /* * Common UDC structure */ @@ -129,8 +134,6 @@ struct lpc32xx_udc { /* Board and device specific */ struct lpc32xx_usbd_cfg *board; - u32 io_p_start; - u32 io_p_size; void __iomem *udp_baseaddr; int udp_irq[4]; struct clk *usb_slv_clk; @@ -151,10 +154,10 @@ struct lpc32xx_udc { u8 last_vbus; int pullup; int poweron; + enum atx_type atx; /* Work queues related to I2C support */ struct work_struct pullup_job; - struct work_struct vbus_job; struct work_struct power_job; /* USB device peripheral - various */ @@ -553,6 +556,15 @@ static inline void remove_debug_file(struct lpc32xx_udc *udc) {} /* Primary initialization sequence for the ISP1301 transceiver */ static void isp1301_udc_configure(struct lpc32xx_udc *udc) { + u8 value; + s32 vendor, product; + + vendor = i2c_smbus_read_word_data(udc->isp1301_i2c_client, 0x00); + product = i2c_smbus_read_word_data(udc->isp1301_i2c_client, 0x02); + + if (vendor == 0x0483 && product == 0xa0c4) + udc->atx = STOTG04; + /* LPC32XX only supports DAT_SE0 USB mode */ /* This sequence is important */ @@ -572,8 +584,12 @@ static void isp1301_udc_configure(struct lpc32xx_udc *udc) */ i2c_smbus_write_byte_data(udc->isp1301_i2c_client, (ISP1301_I2C_MODE_CONTROL_2 | ISP1301_I2C_REG_CLEAR_ADDR), ~0); + + value = MC2_BI_DI; + if (udc->atx != STOTG04) + value |= MC2_SPD_SUSP_CTRL; i2c_smbus_write_byte_data(udc->isp1301_i2c_client, - ISP1301_I2C_MODE_CONTROL_2, (MC2_BI_DI | MC2_SPD_SUSP_CTRL)); + ISP1301_I2C_MODE_CONTROL_2, value); /* Driver VBUS_DRV high or low depending on board setup */ if (udc->board->vbus_drv_pol != 0) @@ -601,24 +617,19 @@ static void isp1301_udc_configure(struct lpc32xx_udc *udc) (ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR), OTG1_VBUS_DISCHRG); - /* Clear and enable VBUS high edge interrupt */ i2c_smbus_write_byte_data(udc->isp1301_i2c_client, ISP1301_I2C_INTERRUPT_LATCH | ISP1301_I2C_REG_CLEAR_ADDR, ~0); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, ISP1301_I2C_INTERRUPT_FALLING | ISP1301_I2C_REG_CLEAR_ADDR, ~0); i2c_smbus_write_byte_data(udc->isp1301_i2c_client, - ISP1301_I2C_INTERRUPT_FALLING, INT_VBUS_VLD); - i2c_smbus_write_byte_data(udc->isp1301_i2c_client, ISP1301_I2C_INTERRUPT_RISING | ISP1301_I2C_REG_CLEAR_ADDR, ~0); - i2c_smbus_write_byte_data(udc->isp1301_i2c_client, - ISP1301_I2C_INTERRUPT_RISING, INT_VBUS_VLD); - dev_info(udc->dev, "ISP1301 Vendor ID : 0x%04x\n", - i2c_smbus_read_word_data(udc->isp1301_i2c_client, 0x00)); - dev_info(udc->dev, "ISP1301 Product ID : 0x%04x\n", - i2c_smbus_read_word_data(udc->isp1301_i2c_client, 0x02)); + dev_info(udc->dev, "ISP1301 Vendor ID : 0x%04x\n", vendor); + dev_info(udc->dev, "ISP1301 Product ID : 0x%04x\n", product); dev_info(udc->dev, "ISP1301 Version ID : 0x%04x\n", i2c_smbus_read_word_data(udc->isp1301_i2c_client, 0x14)); + } /* Enables or disables the USB device pullup via the ISP1301 transceiver */ @@ -661,6 +672,10 @@ static void isp1301_pullup_enable(struct lpc32xx_udc *udc, int en_pullup, /* Powers up or down the ISP1301 transceiver */ static void isp1301_set_powerstate(struct lpc32xx_udc *udc, int enable) { + /* There is no "global power down" register for stotg04 */ + if (udc->atx == STOTG04) + return; + if (enable != 0) /* Power up ISP1301 - this ISP1301 will automatically wakeup when VBUS is detected */ @@ -2830,11 +2845,9 @@ static irqreturn_t lpc32xx_usb_devdma_irq(int irq, void *_udc) * VBUS detection, pullup handler, and Gadget cable state notification * */ -static void vbus_work(struct work_struct *work) +static void vbus_work(struct lpc32xx_udc *udc) { u8 value; - struct lpc32xx_udc *udc = container_of(work, struct lpc32xx_udc, - vbus_job); if (udc->enabled != 0) { /* Discharge VBUS real quick */ @@ -2870,18 +2883,13 @@ static void vbus_work(struct work_struct *work) lpc32xx_vbus_session(&udc->gadget, udc->vbus); } } - - /* Re-enable after completion */ - enable_irq(udc->udp_irq[IRQ_USB_ATX]); } static irqreturn_t lpc32xx_usb_vbus_irq(int irq, void *_udc) { struct lpc32xx_udc *udc = _udc; - /* Defer handling of VBUS IRQ to work queue */ - disable_irq_nosync(udc->udp_irq[IRQ_USB_ATX]); - schedule_work(&udc->vbus_job); + vbus_work(udc); return IRQ_HANDLED; } @@ -2890,7 +2898,6 @@ static int lpc32xx_start(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { struct lpc32xx_udc *udc = to_udc(gadget); - int i; if (!driver || driver->max_speed < USB_SPEED_FULL || !driver->setup) { dev_err(udc->dev, "bad parameter.\n"); @@ -2910,22 +2917,25 @@ static int lpc32xx_start(struct usb_gadget *gadget, /* Force VBUS process once to check for cable insertion */ udc->last_vbus = udc->vbus = 0; - schedule_work(&udc->vbus_job); + vbus_work(udc); - /* Do not re-enable ATX IRQ (3) */ - for (i = IRQ_USB_LP; i < IRQ_USB_ATX; i++) - enable_irq(udc->udp_irq[i]); + /* enable interrupts */ + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_INTERRUPT_FALLING, INT_SESS_VLD | INT_VBUS_VLD); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_INTERRUPT_RISING, INT_SESS_VLD | INT_VBUS_VLD); return 0; } static int lpc32xx_stop(struct usb_gadget *gadget) { - int i; struct lpc32xx_udc *udc = to_udc(gadget); - for (i = IRQ_USB_LP; i <= IRQ_USB_ATX; i++) - disable_irq(udc->udp_irq[i]); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_INTERRUPT_FALLING | ISP1301_I2C_REG_CLEAR_ADDR, ~0); + i2c_smbus_write_byte_data(udc->isp1301_i2c_client, + ISP1301_I2C_INTERRUPT_RISING | ISP1301_I2C_REG_CLEAR_ADDR, ~0); if (udc->clocked) { spin_lock(&udc->lock); @@ -2999,7 +3009,7 @@ static int lpc32xx_udc_probe(struct platform_device *pdev) dma_addr_t dma_handle; struct device_node *isp1301_node; - udc = kmemdup(&controller_template, sizeof(*udc), GFP_KERNEL); + udc = devm_kmemdup(dev, &controller_template, sizeof(*udc), GFP_KERNEL); if (!udc) return -ENOMEM; @@ -3022,8 +3032,7 @@ static int lpc32xx_udc_probe(struct platform_device *pdev) udc->isp1301_i2c_client = isp1301_get_client(isp1301_node); if (!udc->isp1301_i2c_client) { - retval = -EPROBE_DEFER; - goto phy_fail; + return -EPROBE_DEFER; } dev_info(udc->dev, "ISP1301 I2C device at address 0x%x\n", @@ -3032,7 +3041,7 @@ static int lpc32xx_udc_probe(struct platform_device *pdev) pdev->dev.dma_mask = &lpc32xx_usbd_dmamask; retval = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); if (retval) - goto resource_fail; + return retval; udc->board = &lpc32xx_usbddata; @@ -3045,10 +3054,8 @@ static int lpc32xx_udc_probe(struct platform_device *pdev) * IORESOURCE_IRQ, USB transceiver interrupt number */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - retval = -ENXIO; - goto resource_fail; - } + if (!res) + return -ENXIO; spin_lock_init(&udc->lock); @@ -3058,45 +3065,33 @@ static int lpc32xx_udc_probe(struct platform_device *pdev) if (udc->udp_irq[i] < 0) { dev_err(udc->dev, "irq resource %d not available!\n", i); - retval = udc->udp_irq[i]; - goto irq_fail; + return udc->udp_irq[i]; } } - udc->io_p_start = res->start; - udc->io_p_size = resource_size(res); - if (!request_mem_region(udc->io_p_start, udc->io_p_size, driver_name)) { - dev_err(udc->dev, "someone's using UDC memory\n"); - retval = -EBUSY; - goto request_mem_region_fail; - } - - udc->udp_baseaddr = ioremap(udc->io_p_start, udc->io_p_size); + udc->udp_baseaddr = devm_ioremap_resource(dev, res); if (!udc->udp_baseaddr) { - retval = -ENOMEM; dev_err(udc->dev, "IO map failure\n"); - goto io_map_fail; + return -ENOMEM; } /* Get USB device clock */ - udc->usb_slv_clk = clk_get(&pdev->dev, NULL); + udc->usb_slv_clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(udc->usb_slv_clk)) { dev_err(udc->dev, "failed to acquire USB device clock\n"); - retval = PTR_ERR(udc->usb_slv_clk); - goto usb_clk_get_fail; + return PTR_ERR(udc->usb_slv_clk); } /* Enable USB device clock */ retval = clk_prepare_enable(udc->usb_slv_clk); if (retval < 0) { dev_err(udc->dev, "failed to start USB device clock\n"); - goto usb_clk_enable_fail; + return retval; } /* Setup deferred workqueue data */ udc->poweron = udc->pullup = 0; INIT_WORK(&udc->pullup_job, pullup_work); - INIT_WORK(&udc->vbus_job, vbus_work); #ifdef CONFIG_PM INIT_WORK(&udc->power_job, power_work); #endif @@ -3134,47 +3129,44 @@ static int lpc32xx_udc_probe(struct platform_device *pdev) /* Request IRQs - low and high priority USB device IRQs are routed to * the same handler, while the DMA interrupt is routed elsewhere */ - retval = request_irq(udc->udp_irq[IRQ_USB_LP], lpc32xx_usb_lp_irq, - 0, "udc_lp", udc); + retval = devm_request_irq(dev, udc->udp_irq[IRQ_USB_LP], + lpc32xx_usb_lp_irq, 0, "udc_lp", udc); if (retval < 0) { dev_err(udc->dev, "LP request irq %d failed\n", udc->udp_irq[IRQ_USB_LP]); - goto irq_lp_fail; + goto irq_req_fail; } - retval = request_irq(udc->udp_irq[IRQ_USB_HP], lpc32xx_usb_hp_irq, - 0, "udc_hp", udc); + retval = devm_request_irq(dev, udc->udp_irq[IRQ_USB_HP], + lpc32xx_usb_hp_irq, 0, "udc_hp", udc); if (retval < 0) { dev_err(udc->dev, "HP request irq %d failed\n", udc->udp_irq[IRQ_USB_HP]); - goto irq_hp_fail; + goto irq_req_fail; } - retval = request_irq(udc->udp_irq[IRQ_USB_DEVDMA], - lpc32xx_usb_devdma_irq, 0, "udc_dma", udc); + retval = devm_request_irq(dev, udc->udp_irq[IRQ_USB_DEVDMA], + lpc32xx_usb_devdma_irq, 0, "udc_dma", udc); if (retval < 0) { dev_err(udc->dev, "DEV request irq %d failed\n", udc->udp_irq[IRQ_USB_DEVDMA]); - goto irq_dev_fail; + goto irq_req_fail; } /* The transceiver interrupt is used for VBUS detection and will kick off the VBUS handler function */ - retval = request_irq(udc->udp_irq[IRQ_USB_ATX], lpc32xx_usb_vbus_irq, - 0, "udc_otg", udc); + retval = devm_request_threaded_irq(dev, udc->udp_irq[IRQ_USB_ATX], NULL, + lpc32xx_usb_vbus_irq, IRQF_ONESHOT, + "udc_otg", udc); if (retval < 0) { dev_err(udc->dev, "VBUS request irq %d failed\n", udc->udp_irq[IRQ_USB_ATX]); - goto irq_xcvr_fail; + goto irq_req_fail; } /* Initialize wait queue */ init_waitqueue_head(&udc->ep_disable_wait_queue); atomic_set(&udc->enabled_ep_cnt, 0); - /* Keep all IRQs disabled until GadgetFS starts up */ - for (i = IRQ_USB_LP; i <= IRQ_USB_ATX; i++) - disable_irq(udc->udp_irq[i]); - retval = usb_add_gadget_udc(dev, &udc->gadget); if (retval < 0) goto add_gadget_fail; @@ -3190,32 +3182,15 @@ static int lpc32xx_udc_probe(struct platform_device *pdev) return 0; add_gadget_fail: - free_irq(udc->udp_irq[IRQ_USB_ATX], udc); -irq_xcvr_fail: - free_irq(udc->udp_irq[IRQ_USB_DEVDMA], udc); -irq_dev_fail: - free_irq(udc->udp_irq[IRQ_USB_HP], udc); -irq_hp_fail: - free_irq(udc->udp_irq[IRQ_USB_LP], udc); -irq_lp_fail: +irq_req_fail: dma_pool_destroy(udc->dd_cache); dma_alloc_fail: dma_free_coherent(&pdev->dev, UDCA_BUFF_SIZE, udc->udca_v_base, udc->udca_p_base); i2c_fail: clk_disable_unprepare(udc->usb_slv_clk); -usb_clk_enable_fail: - clk_put(udc->usb_slv_clk); -usb_clk_get_fail: - iounmap(udc->udp_baseaddr); -io_map_fail: - release_mem_region(udc->io_p_start, udc->io_p_size); dev_err(udc->dev, "%s probe failed, %d\n", driver_name, retval); -request_mem_region_fail: -irq_fail: -resource_fail: -phy_fail: - kfree(udc); + return retval; } @@ -3231,24 +3206,14 @@ static int lpc32xx_udc_remove(struct platform_device *pdev) udc_disable(udc); pullup(udc, 0); - free_irq(udc->udp_irq[IRQ_USB_ATX], udc); - device_init_wakeup(&pdev->dev, 0); remove_debug_file(udc); dma_pool_destroy(udc->dd_cache); dma_free_coherent(&pdev->dev, UDCA_BUFF_SIZE, udc->udca_v_base, udc->udca_p_base); - free_irq(udc->udp_irq[IRQ_USB_DEVDMA], udc); - free_irq(udc->udp_irq[IRQ_USB_HP], udc); - free_irq(udc->udp_irq[IRQ_USB_LP], udc); clk_disable_unprepare(udc->usb_slv_clk); - clk_put(udc->usb_slv_clk); - - iounmap(udc->udp_baseaddr); - release_mem_region(udc->io_p_start, udc->io_p_size); - kfree(udc); return 0; } diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c index c2011cd7df8c..564aeee1a1fe 100644 --- a/drivers/usb/gadget/udc/net2272.c +++ b/drivers/usb/gadget/udc/net2272.c @@ -573,8 +573,7 @@ net2272_read_fifo(struct net2272_ep *ep, struct net2272_request *req) /* completion */ if (unlikely(cleanup || is_short || - ((req->req.actual == req->req.length) - && !req->req.zero))) { + req->req.actual == req->req.length)) { if (cleanup) { net2272_out_flush(ep); diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index 898339e5df10..b6bbe2e448ba 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -789,8 +789,7 @@ static int read_fifo(struct net2280_ep *ep, struct net2280_request *req) (void) readl(&ep->regs->ep_rsp); } - return is_short || ((req->req.actual == req->req.length) && - !req->req.zero); + return is_short || req->req.actual == req->req.length; } /* fill out dma descriptor to match a given request */ @@ -1058,7 +1057,7 @@ net2280_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) /* PIO ... stuff the fifo, or unblock it. */ if (ep->is_in) write_fifo(ep, _req); - else if (list_empty(&ep->queue)) { + else { u32 s; /* OUT FIFO might have packet(s) buffered */ diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 8c509b060c09..24b4f091acb8 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -21,7 +21,7 @@ config AB8500_USB in host mode, low speed. config FSL_USB2_OTG - bool "Freescale USB OTG Transceiver Driver" + tristate "Freescale USB OTG Transceiver Driver" depends on USB_EHCI_FSL && USB_FSL_USB2 && USB_OTG_FSM=y && PM depends on USB_GADGET || !USB_GADGET # if USB_GADGET=m, this can't be 'y' select USB_PHY diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 66a24b13e2ab..bb57b5af4700 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -653,11 +653,16 @@ extern wait_queue_head_t usb_kill_urb_queue; #define usb_endpoint_out(ep_dir) (!((ep_dir) & USB_DIR_IN)) #ifdef CONFIG_PM +extern unsigned usb_wakeup_enabled_descendants(struct usb_device *udev); extern void usb_root_hub_lost_power(struct usb_device *rhdev); extern int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg); extern int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg); extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd); #else +static inline unsigned usb_wakeup_enabled_descendants(struct usb_device *udev) +{ + return 0; +} static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd) { return; |