diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-03 12:15:10 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-03 12:15:10 -0800 |
| commit | 73ad0adcb69d6a895ff73855ab366a7ae0b2fb0b (patch) | |
| tree | a66967eb3fe9b6162820c93b5c56221d90c291c8 | |
| parent | 99f14bd4d1b2a1b1b6cd508e08efdbc5e3919198 (diff) | |
| parent | 836a2164491b19dcd4f29d574e548bcadd421a6a (diff) | |
Merge tag 'usb-for-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes:
usb: changes for v3.14 merge window
This pull request is quite extensive, containing
105 non-merge commits. Because of that, we describe
the changes in sections below:
New drivers:
- Keystone PHY driver and DWC3 Glue Layer
- Aeroflex Gaisler GRUSBDC
- Tahvo PHY driver for N770
- JZ4740 MUSB gluer Layer
- Broadcom PHY Driver
Important new features:
- MUSB DSPS learned about suspend/resume
- New quirk_ep_out_aligned_size flag added to struct usb_gadget
- DWC3 initializes the new quirk flag so gadget drivers can use it.
- AM335x PHY Driver learns about remote wakeup
- Renesas USBHS now requests DMA Engine only once
- s3c-hsotg is now re-used on Broadcom devices
- USB PHY layer now makes sure to initialize the notifier for all
drivers
- omap-control learned about TI's new AM437x devices
- few other usb gadget/function drivers learned about the new
configfs-based binding.
Misc Fixes and Clean Ups:
- Several sparse fixes all over the place
- Removal of redundant of_match_ptr()
- r-car gen2 phy now uses usb_add_phy_dev()
- removal of DEFINE_PCI_DEVICE_TABLE() from a few drivers
- conversion to clk_prepare/clk_unprepare on r8a66597-udc
- some randconfig errors and build warnings were fixed
- removal of unnecessary lock on dwc3-omap.c
Signed-of-by: Felipe Balbi <balbi@ti.com>
116 files changed, 6435 insertions, 1272 deletions
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-ffs b/Documentation/ABI/testing/configfs-usb-gadget-ffs new file mode 100644 index 00000000000..14343e237e8 --- /dev/null +++ b/Documentation/ABI/testing/configfs-usb-gadget-ffs @@ -0,0 +1,9 @@ +What: /config/usb-gadget/gadget/functions/ffs.name +Date: Nov 2013 +KenelVersion: 3.13 +Description: The purpose of this directory is to create and remove it. + + A corresponding USB function instance is created/removed. + There are no attributes here. + + All parameters are set through FunctionFS. diff --git a/Documentation/ABI/testing/configfs-usb-gadget-loopback b/Documentation/ABI/testing/configfs-usb-gadget-loopback new file mode 100644 index 00000000000..852b2365a5b --- /dev/null +++ b/Documentation/ABI/testing/configfs-usb-gadget-loopback @@ -0,0 +1,8 @@ +What: /config/usb-gadget/gadget/functions/Loopback.name +Date: Nov 2013 +KenelVersion: 3.13 +Description: + The attributes: + + qlen - depth of loopback queue + bulk_buflen - buffer length diff --git a/Documentation/ABI/testing/configfs-usb-gadget-sourcesink b/Documentation/ABI/testing/configfs-usb-gadget-sourcesink new file mode 100644 index 00000000000..a30f3093ef6 --- /dev/null +++ b/Documentation/ABI/testing/configfs-usb-gadget-sourcesink @@ -0,0 +1,12 @@ +What: /config/usb-gadget/gadget/functions/SourceSink.name +Date: Nov 2013 +KenelVersion: 3.13 +Description: + The attributes: + + pattern - 0 (all zeros), 1 (mod63), 2 (none) + isoc_interval - 1..16 + isoc_maxpacket - 0 - 1023 (fs), 0 - 1024 (hs/ss) + isoc_mult - 0..2 (hs/ss only) + isoc_maxburst - 0..15 (ss only) + qlen - buffer length diff --git a/Documentation/ABI/testing/sysfs-platform-tahvo-usb b/Documentation/ABI/testing/sysfs-platform-tahvo-usb new file mode 100644 index 00000000000..f6e20ce4b53 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-platform-tahvo-usb @@ -0,0 +1,16 @@ +What: /sys/bus/platform/devices/tahvo-usb/otg_mode +Date: December 2013 +Contact: Aaro Koskinen <aaro.koskinen@iki.fi> +Description: + Set or read the current OTG mode. Valid values are "host" and + "peripheral". + + Reading: returns the current mode. + +What: /sys/bus/platform/devices/tahvo-usb/vbus +Date: December 2013 +Contact: Aaro Koskinen <aaro.koskinen@iki.fi> +Description: + Read the current VBUS state. + + Reading: returns "on" or "off". diff --git a/Documentation/devicetree/bindings/phy/bcm-phy.txt b/Documentation/devicetree/bindings/phy/bcm-phy.txt new file mode 100644 index 00000000000..3dc8b3d2ffb --- /dev/null +++ b/Documentation/devicetree/bindings/phy/bcm-phy.txt @@ -0,0 +1,15 @@ +BROADCOM KONA USB2 PHY + +Required properties: + - compatible: brcm,kona-usb2-phy + - reg: offset and length of the PHY registers + - #phy-cells: must be 0 +Refer to phy/phy-bindings.txt for the generic PHY binding properties + +Example: + + usbphy: usb-phy@3f130000 { + compatible = "brcm,kona-usb2-phy"; + reg = <0x3f130000 0x28>; + #phy-cells = <0>; + }; diff --git a/Documentation/devicetree/bindings/staging/dwc2.txt b/Documentation/devicetree/bindings/staging/dwc2.txt index 1a1b7cfa484..a1753ed0dd8 100644 --- a/Documentation/devicetree/bindings/staging/dwc2.txt +++ b/Documentation/devicetree/bindings/staging/dwc2.txt @@ -5,6 +5,14 @@ Required properties: - compatible : "snps,dwc2" - reg : Should contain 1 register range (address and length) - interrupts : Should contain 1 interrupt +- clocks: clock provider specifier +- clock-names: shall be "otg" +Refer to clk/clock-bindings.txt for generic clock consumer properties + +Optional properties: +- phys: phy provider specifier +- phy-names: shall be "device" +Refer to phy/phy-bindings.txt for generic phy consumer properties Example: @@ -12,4 +20,8 @@ Example: compatible = "ralink,rt3050-usb, snps,dwc2"; reg = <0x101c0000 40000>; interrupts = <18>; + clocks = <&usb_otg_ahb_clk>; + clock-names = "otg"; + phys = <&usbphy>; + phy-names = "usb2-phy"; }; diff --git a/Documentation/devicetree/bindings/usb/gr-udc.txt b/Documentation/devicetree/bindings/usb/gr-udc.txt new file mode 100644 index 00000000000..0c5118f7a91 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/gr-udc.txt @@ -0,0 +1,28 @@ +USB Peripheral Controller driver for Aeroflex Gaisler GRUSBDC. + +The GRUSBDC USB Device Controller core is available in the GRLIB VHDL +IP core library. + +Note: In the ordinary environment for the core, a Leon SPARC system, +these properties are built from information in the AMBA plug&play. + +Required properties: + +- name : Should be "GAISLER_USBDC" or "01_021" + +- reg : Address and length of the register set for the device + +- interrupts : Interrupt numbers for this device + +Optional properties: + +- epobufsizes : An array of buffer sizes for OUT endpoints. If the property is + not present, or for endpoints outside of the array, 1024 is assumed by + the driver. + +- epibufsizes : An array of buffer sizes for IN endpoints. If the property is + not present, or for endpoints outside of the array, 1024 is assumed by + the driver. + +For further information look in the documentation for the GLIB IP core library: +http://www.gaisler.com/products/grlib/grip.pdf diff --git a/Documentation/devicetree/bindings/usb/omap-usb.txt b/Documentation/devicetree/bindings/usb/omap-usb.txt index 090e5e22bd2..c495135115c 100644 --- a/Documentation/devicetree/bindings/usb/omap-usb.txt +++ b/Documentation/devicetree/bindings/usb/omap-usb.txt @@ -87,6 +87,8 @@ Required properties: e.g. USB3 PHY and SATA PHY on OMAP5. "ti,control-phy-dra7usb2" - if it has power down register like USB2 PHY on DRA7 platform. + "ti,control-phy-am437usb2" - if it has power down register like USB2 PHY on + AM437 platform. - reg : Address and length of the register set for the device. It contains the address of "otghs_control" for control-phy-otghs or "power" register for other types. diff --git a/arch/arm/mach-omap1/include/mach/usb.h b/arch/arm/mach-omap1/include/mach/usb.h index 45e5ac707cb..2c263051dc5 100644 --- a/arch/arm/mach-omap1/include/mach/usb.h +++ b/arch/arm/mach-omap1/include/mach/usb.h @@ -8,43 +8,7 @@ #define is_usb0_device(config) 0 #endif -struct omap_usb_config { - /* Configure drivers according to the connectors on your board: - * - "A" connector (rectagular) - * ... for host/OHCI use, set "register_host". - * - "B" connector (squarish) or "Mini-B" - * ... for device/gadget use, set "register_dev". - * - "Mini-AB" connector (very similar to Mini-B) - * ... for OTG use as device OR host, initialize "otg" - */ - unsigned register_host:1; - unsigned register_dev:1; - u8 otg; /* port number, 1-based: usb1 == 2 */ - - u8 hmc_mode; - - /* implicitly true if otg: host supports remote wakeup? */ - u8 rwc; - - /* signaling pins used to talk to transceiver on usbN: - * 0 == usbN unused - * 2 == usb0-only, using internal transceiver - * 3 == 3 wire bidirectional - * 4 == 4 wire bidirectional - * 6 == 6 wire unidirectional (or TLL) - */ - u8 pins[3]; - - struct platform_device *udc_device; - struct platform_device *ohci_device; - struct platform_device *otg_device; - - u32 (*usb0_init)(unsigned nwires, unsigned is_device); - u32 (*usb1_init)(unsigned nwires); - u32 (*usb2_init)(unsigned nwires, unsigned alt_pingroup); - - int (*ocpi_enable)(void); -}; +#include <linux/platform_data/usb-omap1.h> void omap_otg_init(struct omap_usb_config *config); diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 330ef2d0656..a49e85349d8 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -51,4 +51,10 @@ config PHY_EXYNOS_DP_VIDEO help Support for Display Port PHY found on Samsung EXYNOS SoCs. +config BCM_KONA_USB2_PHY + tristate "Broadcom Kona USB2 PHY Driver" + depends on GENERIC_PHY + help + Enable this to support the Broadcom Kona USB 2.0 PHY. + endmenu diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index d0caae9cfb8..c447f1a98ac 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -3,6 +3,7 @@ # obj-$(CONFIG_GENERIC_PHY) += phy-core.o +obj-$(CONFIG_BCM_KONA_USB2_PHY) += phy-bcm-kona-usb2.o obj-$(CONFIG_PHY_EXYNOS_DP_VIDEO) += phy-exynos-dp-video.o obj-$(CONFIG_PHY_EXYNOS_MIPI_VIDEO) += phy-exynos-mipi-video.o obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o diff --git a/drivers/phy/phy-bcm-kona-usb2.c b/drivers/phy/phy-bcm-kona-usb2.c new file mode 100644 index 00000000000..efc5c1a13a5 --- /dev/null +++ b/drivers/phy/phy-bcm-kona-usb2.c @@ -0,0 +1,158 @@ +/* + * phy-bcm-kona-usb2.c - Broadcom Kona USB2 Phy Driver + * + * Copyright (C) 2013 Linaro Limited + * Matt Porter <mporter@linaro.org> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/phy/phy.h> +#include <linux/platform_device.h> + +#define OTGCTL (0) +#define OTGCTL_OTGSTAT2 BIT(31) +#define OTGCTL_OTGSTAT1 BIT(30) +#define OTGCTL_PRST_N_SW BIT(11) +#define OTGCTL_HRESET_N BIT(10) +#define OTGCTL_UTMI_LINE_STATE1 BIT(9) +#define OTGCTL_UTMI_LINE_STATE0 BIT(8) + +#define P1CTL (8) +#define P1CTL_SOFT_RESET BIT(1) +#define P1CTL_NON_DRIVING BIT(0) + +struct bcm_kona_usb { + void __iomem *regs; +}; + +static void bcm_kona_usb_phy_power(struct bcm_kona_usb *phy, int on) +{ + u32 val; + + val = readl(phy->regs + OTGCTL); + if (on) { + /* Configure and power PHY */ + val &= ~(OTGCTL_OTGSTAT2 | OTGCTL_OTGSTAT1 | + OTGCTL_UTMI_LINE_STATE1 | OTGCTL_UTMI_LINE_STATE0); + val |= OTGCTL_PRST_N_SW | OTGCTL_HRESET_N; + } else { + val &= ~(OTGCTL_PRST_N_SW | OTGCTL_HRESET_N); + } + writel(val, phy->regs + OTGCTL); +} + +static int bcm_kona_usb_phy_init(struct phy *gphy) +{ + struct bcm_kona_usb *phy = phy_get_drvdata(gphy); + u32 val; + + /* Soft reset PHY */ + val = readl(phy->regs + P1CTL); + val &= ~P1CTL_NON_DRIVING; + val |= P1CTL_SOFT_RESET; + writel(val, phy->regs + P1CTL); + writel(val & ~P1CTL_SOFT_RESET, phy->regs + P1CTL); + /* Reset needs to be asserted for 2ms */ + mdelay(2); + writel(val | P1CTL_SOFT_RESET, phy->regs + P1CTL); + + return 0; +} + +static int bcm_kona_usb_phy_power_on(struct phy *gphy) +{ + struct bcm_kona_usb *phy = phy_get_drvdata(gphy); + + bcm_kona_usb_phy_power(phy, 1); + + return 0; +} + +static int bcm_kona_usb_phy_power_off(struct phy *gphy) +{ + struct bcm_kona_usb *phy = phy_get_drvdata(gphy); + + bcm_kona_usb_phy_power(phy, 0); + + return 0; +} + +static struct phy_ops ops = { + .init = bcm_kona_usb_phy_init, + .power_on = bcm_kona_usb_phy_power_on, + .power_off = bcm_kona_usb_phy_power_off, + .owner = THIS_MODULE, +}; + +static int bcm_kona_usb2_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct bcm_kona_usb *phy; + struct resource *res; + struct phy *gphy; + struct phy_provider *phy_provider; + + phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); + if (!phy) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + phy->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(phy->regs)) + return PTR_ERR(phy->regs); + + platform_set_drvdata(pdev, phy); + + gphy = devm_phy_create(dev, &ops, NULL); + if (IS_ERR(gphy)) + return PTR_ERR(gphy); + + /* The Kona PHY supports an 8-bit wide UTMI interface */ + phy_set_bus_width(gphy, 8); + + phy_set_drvdata(gphy, phy); + + phy_provider = devm_of_phy_provider_register(dev, + of_phy_simple_xlate); + if (IS_ERR(phy_provider)) + return PTR_ERR(phy_provider); + + return 0; +} + +static const struct of_device_id bcm_kona_usb2_dt_ids[] = { + { .compatible = "brcm,kona-usb2-phy" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, bcm_kona_usb2_dt_ids); + +static struct platform_driver bcm_kona_usb2_driver = { + .probe = bcm_kona_usb2_probe, + .driver = { + .name = "bcm-kona-usb2", + .owner = THIS_MODULE, + .of_match_table = bcm_kona_usb2_dt_ids, + }, +}; + +module_platform_driver(bcm_kona_usb2_driver); + +MODULE_ALIAS("platform:bcm-kona-usb2"); +MODULE_AUTHOR("Matt Porter <mporter@linaro.org>"); +MODULE_DESCRIPTION("BCM Kona USB 2.0 PHY driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 2642b8a11e0..a34fb984641 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -94,8 +94,6 @@ source "drivers/usb/wusbcore/Kconfig" source "drivers/usb/host/Kconfig" -source "drivers/usb/musb/Kconfig" - source "drivers/usb/renesas_usbhs/Kconfig" source "drivers/usb/class/Kconfig" @@ -106,6 +104,8 @@ source "drivers/usb/image/Kconfig" endif +source "drivers/usb/musb/Kconfig" + source "drivers/usb/dwc3/Kconfig" source "drivers/usb/chipidea/Kconfig" diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 69d20fbb38a..73a39ef93ec 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1566,7 +1566,7 @@ static int init_eps(struct ci_hdrc *ci) * eps, maxP is set by epautoconfig() called * by gadget layer */ - hwep->ep.maxpacket = (unsigned short)~0; + usb_ep_set_maxpacket_limit(&hwep->ep, (unsigned short)~0); INIT_LIST_HEAD(&hwep->qh.queue); hwep->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL, @@ -1586,7 +1586,7 @@ static int init_eps(struct ci_hdrc *ci) else ci->ep0in = hwep; - hwep->ep.maxpacket = CTRL_PAYLOAD_MAX; + usb_ep_set_maxpacket_limit(&hwep->ep, CTRL_PAYLOAD_MAX); continue; } diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index 70fc43027a5..e2c730fc9a9 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -70,6 +70,13 @@ config USB_DWC3_PCI One such PCIe-based platform is Synopsys' PCIe HAPS model of this IP. +config USB_DWC3_KEYSTONE + tristate "Texas Instruments Keystone2 Platforms" + default USB_DWC3 + help + Support of USB2/3 functionality in TI Keystone2 platforms. + Say 'Y' or 'M' here if you have one such device + comment "Debugging features" config USB_DWC3_DEBUG diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index dd1760145c4..10ac3e72482 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -32,3 +32,4 @@ endif obj-$(CONFIG_USB_DWC3_OMAP) += dwc3-omap.o obj-$(CONFIG_USB_DWC3_EXYNOS) += dwc3-exynos.o obj-$(CONFIG_USB_DWC3_PCI) += dwc3-pci.o +obj-$(CONFIG_USB_DWC3_KEYSTONE) += dwc3-keystone.o diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index 8b20c70d91e..28c8ad79f5e 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -50,6 +50,7 @@ static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos) exynos->usb2_phy = pdev; pdata.type = USB_PHY_TYPE_USB2; + pdata.gpio_reset = -1; ret = platform_device_add_data(exynos->usb2_phy, &pdata, sizeof(pdata)); if (ret) diff --git a/drivers/usb/dwc3/dwc3-keystone.c b/drivers/usb/dwc3/dwc3-keystone.c new file mode 100644 index 00000000000..1fad1618df6 --- /dev/null +++ b/drivers/usb/dwc3/dwc3-keystone.c @@ -0,0 +1,202 @@ +/** + * dwc3-keystone.c - Keystone Specific Glue layer + * + * Copyright (C) 2010-2013 Texas Instruments Incorporated - http://www.ti.com + * + * Author: WingMan Kwok <w-kwok2@ti.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> +#include <linux/io.h> +#include <linux/of_platform.h> + +/* USBSS register offsets */ +#define USBSS_REVISION 0x0000 +#define USBSS_SYSCONFIG 0x0010 +#define USBSS_IRQ_EOI 0x0018 +#define USBSS_IRQSTATUS_RAW_0 0x0020 +#define USBSS_IRQSTATUS_0 0x0024 +#define USBSS_IRQENABLE_SET_0 0x0028 +#define USBSS_IRQENABLE_CLR_0 0x002c + +/* IRQ register bits */ +#define USBSS_IRQ_EOI_LINE(n) BIT(n) +#define USBSS_IRQ_EVENT_ST BIT(0) +#define USBSS_IRQ_COREIRQ_EN BIT(0) +#define USBSS_IRQ_COREIRQ_CLR BIT(0) + +static u64 kdwc3_dma_mask; + +struct dwc3_keystone { + struct device *dev; + struct clk *clk; + void __iomem *usbss; +}; + +static inline u32 kdwc3_readl(void __iomem *base, u32 offset) +{ + return readl(base + offset); +} + +static inline void kdwc3_writel(void __iomem *base, u32 offset, u32 value) +{ + writel(value, base + offset); +} + +static void kdwc3_enable_irqs(struct dwc3_keystone *kdwc) +{ + u32 val; + + val = kdwc3_readl(kdwc->usbss, USBSS_IRQENABLE_SET_0); + val |= USBSS_IRQ_COREIRQ_EN; + kdwc3_writel(kdwc->usbss, USBSS_IRQENABLE_SET_0, val); +} + +static void kdwc3_disable_irqs(struct dwc3_keystone *kdwc) +{ + u32 val; + + val = kdwc3_readl(kdwc->usbss, USBSS_IRQENABLE_SET_0); + val &= ~USBSS_IRQ_COREIRQ_EN; + kdwc3_writel(kdwc->usbss, USBSS_IRQENABLE_SET_0, val); +} + +static irqreturn_t dwc3_keystone_interrupt(int irq, void *_kdwc) +{ + struct dwc3_keystone *kdwc = _kdwc; + + kdwc3_writel(kdwc->usbss, USBSS_IRQENABLE_CLR_0, USBSS_IRQ_COREIRQ_CLR); + kdwc3_writel(kdwc->usbss, USBSS_IRQSTATUS_0, USBSS_IRQ_EVENT_ST); + kdwc3_writel(kdwc->usbss, USBSS_IRQENABLE_SET_0, USBSS_IRQ_COREIRQ_EN); + kdwc3_writel(kdwc->usbss, USBSS_IRQ_EOI, USBSS_IRQ_EOI_LINE(0)); + + return IRQ_HANDLED; +} + +static int kdwc3_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *node = pdev->dev.of_node; + struct dwc3_keystone *kdwc; + struct resource *res; + int error, irq; + + kdwc = devm_kzalloc(dev, sizeof(*kdwc), GFP_KERNEL); + if (!kdwc) + return -ENOMEM; + + platform_set_drvdata(pdev, kdwc); + + kdwc->dev = dev; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "missing usbss resource\n"); + return -EINVAL; + } + + kdwc->usbss = devm_ioremap_resource(dev, res); + if (IS_ERR(kdwc->usbss)) + return PTR_ERR(kdwc->usbss); + + kdwc3_dma_mask = dma_get_mask(dev); + dev->dma_mask = &kdwc3_dma_mask; + + kdwc->clk = devm_clk_get(kdwc->dev, "usb"); + + error = clk_prepare_enable(kdwc->clk); + if (error < 0) { + dev_dbg(kdwc->dev, "unable to enable usb clock, err %d\n", + error); + return error; + } + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "missing irq\n"); + goto err_irq; + } + + error = devm_request_irq(dev, irq, dwc3_keystone_interrupt, IRQF_SHARED, + dev_name(dev), kdwc); + if (error) { + dev_err(dev, "failed to request IRQ #%d --> %d\n", + irq, error); + goto err_irq; + } + + kdwc3_enable_irqs(kdwc); + + error = of_platform_populate(node, NULL, NULL, dev); + if (error) { + dev_err(&pdev->dev, "failed to create dwc3 core\n"); + goto err_core; + } + + return 0; + +err_core: + kdwc3_disable_irqs(kdwc); +err_irq: + clk_disable_unprepare(kdwc->clk); + + return error; +} + +static int kdwc3_remove_core(struct device *dev, void *c) +{ + struct platform_device *pdev = to_platform_device(dev); + + platform_device_unregister(pdev); + + return 0; +} + +static int kdwc3_remove(struct platform_device *pdev) +{ + struct dwc3_keystone *kdwc = platform_get_drvdata(pdev); + + kdwc3_disable_irqs(kdwc); + device_for_each_child(&pdev->dev, NULL, kdwc3_remove_core); + clk_disable_unprepare(kdwc->clk); + platform_set_drvdata(pdev, NULL); + + return 0; +} + +static const struct of_device_id kdwc3_of_match[] = { + { .compatible = "ti,keystone-dwc3", }, + {}, +}; +MODULE_DEVICE_TABLE(of, kdwc3_of_match); + +static struct platform_driver kdwc3_driver = { + .probe = kdwc3_probe, + .remove = kdwc3_remove, + .driver = { + .name = "keystone-dwc3", + .owner = THIS_MODULE, + .of_match_table = kdwc3_of_match, + }, +}; + +module_platform_driver(kdwc3_driver); + +MODULE_ALIAS("platform:keystone-dwc3"); +MODULE_AUTHOR("WingMan Kwok <w-kwok2@ti.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("DesignWare USB3 KEYSTONE Glue Layer"); diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 7f7ea62e961..b269dbd47fc 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -20,7 +20,6 @@ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/interrupt.h> -#include <linux/spinlock.h> #include <linux/platform_device.h> #include <linux/platform_data/dwc3-omap.h> #include <linux/pm_runtime.h> @@ -120,9 +119,6 @@ #define USBOTGSS_UTMI_OTG_STATUS_VBUSVALID (1 << 1) struct dwc3_omap { - /* device lock */ - spinlock_t lock; - struct device *dev; int irq; @@ -280,8 +276,6 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) struct dwc3_omap *omap = _omap; u32 reg; - spin_lock(&omap->lock); - reg = dwc3_omap_read_irqmisc_status(omap); if (reg & USBOTGSS_IRQMISC_DMADISABLECLR) { @@ -322,8 +316,6 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) dwc3_omap_write_irq0_status(omap, reg); - spin_unlock(&omap->lock); - return IRQ_HANDLED; } @@ -449,8 +441,6 @@ static int dwc3_omap_probe(struct platform_device *pdev) } } - spin_lock_init(&omap->lock); - omap->dev = dev; omap->irq = irq; omap->base = base; @@ -535,7 +525,7 @@ static int dwc3_omap_probe(struct platform_device *pdev) edev = of_extcon_get_extcon_dev(dev, 0); if (IS_ERR(edev)) { dev_vdbg(dev, "couldn't get extcon device\n"); - ret = PTR_ERR(edev); + ret = -EPROBE_DEFER; goto err2; } diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 665686e7c8c..f393c183cc6 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -52,6 +52,7 @@ static int dwc3_pci_register_phys(struct dwc3_pci *glue) glue->usb2_phy = pdev; pdata.type = USB_PHY_TYPE_USB2; + pdata.gpio_reset = -1; ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata)); if (ret) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 02e44fcaf20..2da0a5a2803 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1650,7 +1650,7 @@ static int dwc3_gadget_init_hw_endpoints(struct dwc3 *dwc, dev_vdbg(dwc->dev, "initializing %s\n", dep->name); if (epnum == 0 || epnum == 1) { - dep->endpoint.maxpacket = 512; + usb_ep_set_maxpacket_limit(&dep->endpoint, 512); dep->endpoint.maxburst = 1; dep->endpoint.ops = &dwc3_gadget_ep0_ops; if (!epnum) @@ -1658,7 +1658,7 @@ static int dwc3_gadget_init_hw_endpoints(struct dwc3 *dwc, } else { int ret; - dep->endpoint.maxpacket = 1024; + usb_ep_set_maxpacket_limit(&dep->endpoint, 1024); dep->endpoint.max_streams = 15; dep->endpoint.ops = &dwc3_gadget_ep_ops; list_add_tail(&dep->endpoint.ep_list, @@ -2597,6 +2597,12 @@ int dwc3_gadget_init(struct dwc3 *dwc) dwc->gadget.name = "dwc3-gadget"; /* + * Per databook, DWC3 needs buffer size to be aligned to MaxPacketSize + * on ep out. + */ + dwc->gadget.quirk_ep_out_aligned_size = true; + + /* * REVISIT: Here we should clear all pending IRQs to be * sure we're starting from a well known location. */ diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index f66d96ad1f5..8154165aa60 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -216,6 +216,13 @@ config USB_FOTG210_UDC Say "y" to link the driver statically, or "m" to build a dynamically linked module called "fotg210_udc". +config USB_GR_UDC + tristate "Aeroflex Gaisler GRUSBDC USB Peripheral Controller Driver" + depends on HAS_DMA + help + Select this to support Aeroflex Gaisler GRUSBDC cores from the GRLIB + VHDL IP core library. + config USB_OMAP tristate "OMAP USB Device Controller" depends on ARCH_OMAP1 @@ -294,11 +301,11 @@ config USB_PXA27X gadget drivers to also be dynamically linked. config USB_S3C_HSOTG - tristate "S3C HS/OtG USB Device controller" - depends on S3C_DEV_USB_HSOTG + depends on ARM + tristate "Designware/S3C HS/OtG USB Device controller" help - The Samsung S3C64XX USB2.0 high-speed gadget controller - integrated into the S3C64XX series SoC. + The Designware USB2.0 high-speed gadget controller + integrated into many SoCs. config USB_S3C2410 tristate "S3C2410 USB Device Controller" @@ -512,9 +519,6 @@ config USB_U_SERIAL config USB_U_ETHER tristate -config USB_U_RNDIS - tristate - config USB_F_SERIAL tristate @@ -542,6 +546,9 @@ config USB_F_RNDIS config USB_F_MASS_STORAGE tristate +config USB_F_FS + tristate + choice tristate "USB Gadget Drivers" default USB_ETH @@ -642,7 +649,6 @@ config USB_CONFIGFS_RNDIS depends on USB_CONFIGFS depends on NET select USB_U_ETHER - select USB_U_RNDIS select USB_F_RNDIS help Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol, @@ -690,6 +696,31 @@ config USB_CONFIGFS_MASS_STORAGE device (in much the same way as the "loop" device driver), specified as a module parameter or sysfs option. +config USB_CONFIGFS_F_LB_SS + boolean "Loopback and sourcesink function (for testing)" + depends on USB_CONFIGFS + select USB_F_SS_LB + help + Loopback function loops back a configurable number of transfers. + Sourcesink function either sinks and sources bulk data. + It also implements control requests, for "chapter 9" conformance. + Make this be the first driver you try using on top of any new + USB peripheral controller driver. Then you can use host-side + test software, like the "usbtest" driver, to put your hardware + and its driver through a basic set of functional tests. + +config USB_CONFIGFS_F_FS + boolean "Function filesystem (FunctionFS)" + depends on USB_CONFIGFS + select USB_F_FS + help + The Function Filesystem (FunctionFS) lets one create USB + composite functions in user space in the same way GadgetFS + lets one create USB gadgets in user space. This allows creation + of composite gadgets such that some of the functions are + implemented in kernel space (for instance Ethernet, serial or + mass storage) and other are implemented in user space. + config USB_ZERO tristate "Gadget Zero (DEVELOPMENT)" select USB_LIBCOMPOSITE @@ -760,7 +791,6 @@ config USB_ETH depends on NET select USB_LIBCOMPOSITE select USB_U_ETHER - select USB_U_RNDIS select USB_F_ECM select USB_F_SUBSET select CRC32 @@ -864,6 +894,7 @@ config USB_GADGETFS config USB_FUNCTIONFS tristate "Function Filesystem" select USB_LIBCOMPOSITE + select USB_F_FS select USB_FUNCTIONFS_GENERIC if !(USB_FUNCTIONFS_ETH || USB_FUNCTIONFS_RNDIS) help The Function Filesystem (FunctionFS) lets one create USB @@ -883,6 +914,8 @@ config USB_FUNCTIONFS_ETH bool "Include configuration with CDC ECM (Ethernet)" depends on USB_FUNCTIONFS && NET select USB_U_ETHER + select USB_F_ECM + select USB_F_SUBSET help Include a configuration with CDC ECM function (Ethernet) and the Function Filesystem. @@ -891,7 +924,7 @@ config USB_FUNCTIONFS_RNDIS bool "Include configuration with RNDIS (Ethernet)" depends on USB_FUNCTIONFS && NET select USB_U_ETHER - select USB_U_RNDIS + select USB_F_RNDIS help Include a configuration with RNDIS function (Ethernet) and the Filesystem. @@ -1065,7 +1098,6 @@ config USB_G_MULTI config USB_G_MULTI_RNDIS bool "RNDIS + CDC Serial + Storage configuration" depends on USB_G_MULTI - select USB_U_RNDIS select USB_F_RNDIS default y help diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index f1af39603d4..5f150bc1b4b 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -7,7 +7,7 @@ ccflags-$(CONFIG_USB_GADGET_VERBOSE) += -DVERBOSE_DEBUG obj-$(CONFIG_USB_GADGET) += udc-core.o obj-$(CONFIG_USB_LIBCOMPOSITE) += libcomposite.o libcomposite-y := usbstring.o config.o epautoconf.o -libcomposite-y += composite.o functions.o configfs.o +libcomposite-y += composite.o functions.o configfs.o u_f.o obj-$(CONFIG_USB_DUMMY_HCD) += dummy_hcd.o obj-$(CONFIG_USB_NET2272) += net2272.o obj-$(CONFIG_USB_NET2280) += net2280.o @@ -35,6 +35,7 @@ mv_udc-y := mv_udc_core.o obj-$(CONFIG_USB_FUSB300) += fusb300_udc.o obj-$(CONFIG_USB_FOTG210_UDC) += fotg210-udc.o obj-$(CONFIG_USB_MV_U3D) += mv_u3d_core.o +obj-$(CONFIG_USB_GR_UDC) += gr_udc.o # USB Functions usb_f_acm-y := f_acm.o @@ -47,8 +48,6 @@ obj-$(CONFIG_USB_F_SERIAL) += usb_f_serial.o usb_f_obex-y := f_obex.o obj-$(CONFIG_USB_F_OBEX) += usb_f_obex.o obj-$(CONFIG_USB_U_ETHER) += u_ether.o -u_rndis-y := rndis.o -obj-$(CONFIG_USB_U_RNDIS) += u_rndis.o usb_f_ncm-y := f_ncm.o obj-$(CONFIG_USB_F_NCM) += usb_f_ncm.o usb_f_ecm-y := f_ecm.o @@ -59,10 +58,12 @@ usb_f_eem-y := f_eem.o obj-$(CONFIG_USB_F_EEM) += usb_f_eem.o usb_f_ecm_subset-y := f_subset.o obj-$(CONFIG_USB_F_SUBSET) += usb_f_ecm_subset.o -usb_f_rndis-y := f_rndis.o +usb_f_rndis-y := f_rndis.o rndis.o obj-$(CONFIG_USB_F_RNDIS) += usb_f_rndis.o usb_f_mass_storage-y := f_mass_storage.o storage_common.o obj-$(CONFIG_USB_F_MASS_STORAGE)+= usb_f_mass_storage.o +usb_f_fs-y := f_fs.o +obj-$(CONFIG_USB_F_FS) += usb_f_fs.o # # USB gadget drivers diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c index f0ff4a675e9..a04aa8b6447 100644 --- a/drivers/usb/gadget/amd5536udc.c +++ b/drivers/usb/gadget/amd5536udc.c @@ -446,7 +446,7 @@ static void ep_init(struct udc_regs __iomem *regs, struct udc_ep *ep) ep->ep.ops = &udc_ep_ops; INIT_LIST_HEAD(&ep->queue); - ep->ep.maxpacket = (u16) ~0; + usb_ep_set_maxpacket_limit(&ep->ep,(u16) ~0); /* set NAK */ tmp = readl(&ep->regs->ctl); tmp |= AMD_BIT(UDC_EPCTL_SNAK); @@ -1564,12 +1564,15 @@ static void udc_setup_endpoints(struct udc *dev) } /* EP0 max packet */ if (dev->gadget.speed == USB_SPEED_FULL) { - dev->ep[UDC_EP0IN_IX].ep.maxpacket = UDC_FS_EP0IN_MAX_PKT_SIZE; - dev->ep[UDC_EP0OUT_IX].ep.maxpacket = - UDC_FS_EP0OUT_MAX_PKT_SIZE; + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0IN_IX].ep, + UDC_FS_EP0IN_MAX_PKT_SIZE); + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0OUT_IX].ep, + UDC_FS_EP0OUT_MAX_PKT_SIZE); } else if (dev->gadget.speed == USB_SPEED_HIGH) { - dev->ep[UDC_EP0IN_IX].ep.maxpacket = UDC_EP0IN_MAX_PKT_SIZE; - dev->ep[UDC_EP0OUT_IX].ep.maxpacket = UDC_EP0OUT_MAX_PKT_SIZE; + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0IN_IX].ep, + UDC_EP0IN_MAX_PKT_SIZE); + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0OUT_IX].ep, + UDC_EP0OUT_MAX_PKT_SIZE); } /* diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 4cc4fd6d147..c3f49fd8325 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -834,7 +834,7 @@ static void udc_reinit(struct at91_udc *udc) ep->ep.desc = NULL; ep->stopped = 0; ep->fifo_bank = 0; - ep->ep.maxpacket = ep->maxpacket; + usb_ep_set_maxpacket_limit(&ep->ep, ep->maxpacket); ep->creg = (void __iomem *) udc->udp_baseaddr + AT91_UDP_CSR(i); /* initialize one queue per endpoint */ INIT_LIST_HEAD(&ep->queue); @@ -1759,15 +1759,15 @@ static int at91udc_probe(struct platform_device *pdev) /* newer chips have more FIFO memory than rm9200 */ if (cpu_is_at91sam9260() || cpu_is_at91sam9g20()) { - udc->ep[0].maxpacket = 64; - udc->ep[3].maxpacket = 64; - udc->ep[4].maxpacket = 512; - udc->ep[5].maxpacket = 512; + usb_ep_set_maxpacket_limit(&udc->ep[0].ep, 64); + usb_ep_set_maxpacket_limit(&udc->ep[3].ep, 64); + usb_ep_set_maxpacket_limit(&udc->ep[4].ep, 512); + usb_ep_set_maxpacket_limit(&udc->ep[5].ep, 512); } else if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) { - udc->ep[3].maxpacket = 64; + usb_ep_set_maxpacket_limit(&udc->ep[3].ep, 64); } else if (cpu_is_at91sam9263()) { - udc->ep[0].maxpacket = 64; - udc->ep[3].maxpacket = 64; + usb_ep_set_maxpacket_limit(&udc->ep[0].ep, 64); + usb_ep_set_maxpacket_limit(&udc->ep[3].ep, 64); } udc->udp_baseaddr = ioremap(res->start, resource_size(res)); diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c index 2cb52e0438d..38bf67b1a97 100644 --- a/drivers/usb/gadget/atmel_usba_udc.c +++ b/drivers/usb/gadget/atmel_usba_udc.c @@ -1012,7 +1012,7 @@ static void nop_release(struct device *dev) } -struct usb_gadget usba_gadget_template = { +static struct usb_gadget usba_gadget_template = { .ops = &usba_udc_ops, .max_speed = USB_SPEED_HIGH, .name = "atmel_usba_udc", @@ -1904,7 +1904,7 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, ep->dma_regs = udc->regs + USBA_DMA_BASE(i); ep->fifo = udc->fifo + USBA_FIFO_BASE(i); ep->ep.ops = &usba_ep_ops; - ep->ep.maxpacket = ep->fifo_size; + usb_ep_set_maxpacket_limit(&ep->ep, ep->fifo_size); ep->udc = udc; INIT_LIST_HEAD(&ep->queue); @@ -1957,7 +1957,8 @@ static struct usba_ep * usba_udc_pdata(struct platform_device *pdev, ep->fifo = udc->fifo + USBA_FIFO_BASE(i); ep->ep.ops = &usba_ep_ops; ep->ep.name = pdata->ep[i].name; - ep->fifo_size = ep->ep.maxpacket = pdata->ep[i].fifo_size; + ep->fifo_size = pdata->ep[i].fifo_size; + usb_ep_set_maxpacket_limit(&ep->ep, ep->fifo_size); ep->udc = udc; INIT_LIST_HEAD(&ep->queue); ep->nr_banks = pdata->ep[i].nr_banks; @@ -1995,14 +1996,12 @@ static int __init usba_udc_probe(struct platform_device *pdev) if (irq < 0) return irq; - pclk = clk_get(&pdev->dev, "pclk"); + pclk = devm_clk_get(&pdev->dev, "pclk"); if (IS_ERR(pclk)) return PTR_ERR(pclk); - hclk = clk_get(&pdev->dev, "hclk"); - if (IS_ERR(hclk)) { - ret = PTR_ERR(hclk); - goto err_get_hclk; - } + hclk = devm_clk_get(&pdev->dev, "hclk"); + if (IS_ERR(hclk)) + return PTR_ERR(hclk); spin_lock_init(&udc->lock); udc->pdev = pdev; @@ -2011,17 +2010,17 @@ static int __init usba_udc_probe(struct platform_device *pdev) udc->vbus_pin = -ENODEV; ret = -ENOMEM; - udc->regs = ioremap(regs->start, resource_size(regs)); + udc->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs)); if (!udc->regs) { dev_err(&pdev->dev, "Unable to map I/O memory, aborting.\n"); - goto err_map_regs; + return ret; } dev_info(&pdev->dev, "MMIO registers at 0x%08lx mapped at %p\n", (unsigned long)regs->start, udc->regs); - udc->fifo = ioremap(fifo->start, resource_size(fifo)); + udc->fifo = devm_ioremap(&pdev->dev, fifo->start, resource_size(fifo)); if (!udc->fifo) { dev_err(&pdev->dev, "Unable to map FIFO, aborting.\n"); - goto err_map_fifo; + return ret; } dev_info(&pdev->dev, "FIFO at 0x%08lx mapped at %p\n", (unsigned long)fifo->start, udc->fifo); @@ -2032,7 +2031,7 @@ static int __init usba_udc_probe(struct platform_device *pdev) ret = clk_prepare_enable(pclk); if (ret) { dev_err(&pdev->dev, "Unable to enable pclk, aborting.\n"); - goto err_clk_enable; + return ret; } toggle_bias(0); usba_writel(udc, CTRL, USBA_DISABLE_MASK); @@ -2043,22 +2042,22 @@ static int __init usba_udc_probe(struct platform_device *pdev) else udc->usba_ep = usba_udc_pdata(pdev, udc); - if (IS_ERR(udc->usba_ep)) { - ret = PTR_ERR(udc->usba_ep); - goto err_alloc_ep; - } + if (IS_ERR(udc->usba_ep)) + return PTR_ERR(udc->usba_ep); - ret = request_irq(irq, usba_udc_irq, 0, "atmel_usba_udc", udc); + ret = devm_request_irq(&pdev->dev, irq, usba_udc_irq, 0, + "atmel_usba_udc", udc); if (ret) { dev_err(&pdev->dev, "Cannot request irq %d (error %d)\n", irq, ret); - goto err_request_irq; + return ret; } udc->irq = irq; if (gpio_is_valid(udc->vbus_pin)) { if (!devm_gpio_request(&pdev->dev, udc->vbus_pin, "atmel_usba_udc")) { - ret = request_irq(gpio_to_irq(udc->vbus_pin), + ret = devm_request_irq(&pdev->dev, + gpio_to_irq(udc->vbus_pin), usba_vbus_irq, 0, "atmel_usba_udc", udc); if (ret) { @@ -2077,31 +2076,13 @@ static int __init usba_udc_probe(struct platform_device *pdev) ret = usb_add_gadget_udc(&pdev->dev, &udc->gadget); if (ret) - goto err_add_udc; + return ret; usba_init_debugfs(udc); for (i = 1; i < udc->num_ep; i++) usba_ep_init_debugfs(udc, &udc->usba_ep[i]); return 0; - -err_add_udc: - if (gpio_is_valid(udc->vbus_pin)) - free_irq(gpio_to_irq(udc->vbus_pin), udc); - - free_irq(irq, udc); -err_request_irq: -err_alloc_ep: -err_clk_enable: - iounmap(udc->fifo); -err_map_fifo: - iounmap(udc->regs); -err_map_regs: - clk_put(hclk); -err_get_hclk: - clk_put(pclk); - - return ret; } static int __exit usba_udc_remove(struct platform_device *pdev) @@ -2117,16 +2098,6 @@ static int __exit usba_udc_remove(struct platform_device *pdev) usba_ep_cleanup_debugfs(&udc->usba_ep[i]); usba_cleanup_debugfs(udc); - if (gpio_is_valid(udc->vbus_pin)) { - free_irq(gpio_to_irq(udc->vbus_pin), udc); - } - - free_irq(udc->irq, udc); - iounmap(udc->fifo); - iounmap(udc->regs); - clk_put(udc->hclk); - clk_put(udc->pclk); - return 0; } diff --git a/drivers/usb/gadget/bcm63xx_udc.c b/drivers/usb/gadget/bcm63xx_udc.c index c58fcf1ebe4..2ac7a8f4bff 100644 --- a/drivers/usb/gadget/bcm63xx_udc.c +++ b/drivers/usb/gadget/bcm63xx_udc.c @@ -549,7 +549,7 @@ static void bcm63xx_ep_setup(struct bcm63xx_udc *udc) if (idx < 0) continue; - udc->bep[idx].ep.maxpacket = max_pkt; + usb_ep_set_maxpacket_limit(&udc->bep[idx].ep, max_pkt); val = (idx << USBD_CSR_EP_LOG_SHIFT) | (cfg->dir << USBD_CSR_EP_DIR_SHIFT) | @@ -943,7 +943,7 @@ static int bcm63xx_init_udc_hw(struct bcm63xx_udc *udc) bep->ep.ops = &bcm63xx_udc_ep_ops; list_add_tail(&bep->ep.ep_list, &udc->gadget.ep_list); bep->halted = 0; - bep->ep.maxpacket = BCM63XX_MAX_CTRL_PKT; + usb_ep_set_maxpacket_limit(&bep->ep, BCM63XX_MAX_CTRL_PKT); bep->udc = udc; bep->ep.desc = NULL; INIT_LIST_HEAD(&bep->queue); diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 2018ba1a217..d742bed7a5f 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1452,8 +1452,22 @@ unknown: struct usb_configuration *c; c = cdev->config; - if (c && c->setup) + if (!c) + goto done; + + /* try current config's setup */ + if (c->setup) { value = c->setup(c, ctrl); + goto done; + } + + /* try the only function in the current config */ + if (!list_is_singular(&c->functions)) + goto done; + f = list_first_entry(&c->functions, struct usb_function, + list); + if (f->setup) + value = f->setup(f, ctrl); } goto done; @@ -1714,7 +1728,7 @@ composite_resume(struct usb_gadget *gadget) { struct usb_composite_dev *cdev = get_gadget_data(gadget); struct usb_function *f; - u8 maxpower; + u16 maxpower; /* REVISIT: should we have config level * suspend/resume callbacks? diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index 25885112fa3..7d1cc01796b 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -4,6 +4,7 @@ #include <linux/device.h> #include <linux/usb/composite.h> #include <linux/usb/gadget_configfs.h> +#include "configfs.h" int check_user_usb_string(const char *name, struct usb_gadget_strings *stringtab_dev) @@ -564,6 +565,13 @@ static struct config_group *function_make( usb_put_function_instance(fi); return ERR_PTR(ret); } + if (fi->set_inst_name) { + ret = fi->set_inst_name(fi, instance_name); + if (ret) { + usb_put_function_instance(fi); + return ERR_PTR(ret); + } + } gi = container_of(group, struct gadget_info, functions_group); diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index 8f4dae31092..8c06430dcc4 100644 --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -951,7 +951,7 @@ static void init_dummy_udc_hw(struct dummy *dum) list_add_tail(&ep->ep.ep_list, &dum->gadget.ep_list); ep->halted = ep->wedged = ep->already_seen = ep->setup_stage = 0; - ep->ep.maxpacket = ~0; + usb_ep_set_maxpacket_limit(&ep->ep, ~0); ep->ep.max_streams = 16; ep->last_io = jiffies; ep->gadget = &dum->gadget; diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c index a777f7bd11b..358de320afb 100644 --- a/drivers/usb/gadget/epautoconf.c +++ b/drivers/usb/gadget/epautoconf.c @@ -58,7 +58,7 @@ ep_matches ( return 0; /* only support ep0 for portable CONTROL traffic */ - type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + type = usb_endpoint_type(desc); if (USB_ENDPOINT_XFER_CONTROL == type) return 0; @@ -129,7 +129,7 @@ ep_matches ( * and wants to know the maximum possible, provide the info. */ if (desc->wMaxPacketSize == 0) - desc->wMaxPacketSize = cpu_to_le16(ep->maxpacket); + desc->wMaxPacketSize = cpu_to_le16(ep->maxpacket_limit); /* endpoint maxpacket size is an input parameter, except for bulk * where it's an output parameter representing the full speed limit. @@ -145,7 +145,7 @@ ep_matches ( case USB_ENDPOINT_XFER_ISOC: /* ISO: limit 1023 bytes full speed, 1024 high/super speed */ - if (ep->maxpacket < max) + if (ep->maxpacket_limit < max) return 0; if (!gadget_is_dualspeed(gadget) && max > 1023) return 0; @@ -178,7 +178,7 @@ ep_matches ( /* report (variable) full speed bulk maxpacket */ if ((USB_ENDPOINT_XFER_BULK == type) && !ep_comp) { - int size = ep->maxpacket; + int size = ep->maxpacket_limit; /* min() doesn't work on bitfields with gcc-3.5 */ if (size > 64) diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c index 8d9e6f7e8f1..798760fa7e7 100644 --- a/drivers/usb/gadget/f_ecm.c +++ b/drivers/usb/gadget/f_ecm.c @@ -691,7 +691,6 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) int status; struct usb_ep *ep; -#ifndef USBF_ECM_INCLUDED struct f_ecm_opts *ecm_opts; if (!can_support_ecm(cdev->gadget)) @@ -715,7 +714,7 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) return status; ecm_opts->bound = true; } -#endif + us = usb_gstrings_attach(cdev, ecm_strings, ARRAY_SIZE(ecm_string_defs)); if (IS_ERR(us)) @@ -834,74 +833,6 @@ fail: return status; } -#ifdef USBF_ECM_INCLUDED - -static void -ecm_old_unbind(struct usb_configuration *c, struct usb_function *f) -{ - struct f_ecm *ecm = func_to_ecm(f); - - DBG(c->cdev, "ecm unbind\n"); - - usb_free_all_descriptors(f); - - kfree(ecm->notify_req->buf); - usb_ep_free_request(ecm->notify, ecm->notify_req); - kfree(ecm); -} - -/** - * ecm_bind_config - add CDC Ethernet network link to a configuration - * @c: the configuration to support the network link - * @ethaddr: a buffer in which the ethernet address of the host side - * side of the link was recorded - * @dev: eth_dev structure - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gether_setup(). Caller is also responsible - * for calling @gether_cleanup() before module unload. - */ -int -ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], - struct eth_dev *dev) -{ - struct f_ecm *ecm; - int status; - - if (!can_support_ecm(c->cdev->gadget) || !ethaddr) - return -EINVAL; - - /* allocate and initialize one new instance */ - ecm = kzalloc(sizeof *ecm, GFP_KERNEL); - if (!ecm) - return -ENOMEM; - - /* export host's Ethernet address in CDC format */ - snprintf(ecm->ethaddr, sizeof ecm->ethaddr, "%pm", ethaddr); - ecm_string_defs[1].s = ecm->ethaddr; - - ecm->port.ioport = dev; - ecm->port.cdc_filter = DEFAULT_FILTER; - - ecm->port.func.name = "cdc_ethernet"; - /* descriptors are per-instance copies */ - ecm->port.func.bind = ecm_bind; - ecm->port.func.unbind = ecm_old_unbind; - ecm->port.func.set_alt = ecm_set_alt; - ecm->port.func.get_alt = ecm_get_alt; - ecm->port.func.setup = ecm_setup; - ecm->port.func.disable = ecm_disable; - - status = usb_add_function(c, &ecm->port.func); - if (status) - kfree(ecm); - return status; -} - -#else - static inline struct f_ecm_opts *to_f_ecm_opts(struct config_item *item) { return container_of(to_config_group(item), struct f_ecm_opts, @@ -1040,5 +971,3 @@ static struct usb_function *ecm_alloc(struct usb_function_instance *fi) DECLARE_USB_FUNCTION_INIT(ecm, ecm_alloc_inst, ecm_alloc); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Brownell"); - -#endif diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 241fc873ffa..306a2b52125 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -22,218 +22,42 @@ #include <linux/pagemap.h> #include <linux/export.h> #include <linux/hid.h> +#include <linux/module.h> #include <asm/unaligned.h> #include <linux/usb/composite.h> #include <linux/usb/functionfs.h> +#include "u_fs.h" +#include "configfs.h" #define FUNCTIONFS_MAGIC 0xa647361 /* Chosen by a honest dice roll ;) */ - -/* Debugging ****************************************************************/ - -#ifdef VERBOSE_DEBUG -#ifndef pr_vdebug -# define pr_vdebug pr_debug -#endif /* pr_vdebug */ -# define ffs_dump_mem(prefix, ptr, len) \ - print_hex_dump_bytes(pr_fmt(prefix ": "), DUMP_PREFIX_NONE, ptr, len) -#else -#ifndef pr_vdebug -# define pr_vdebug(...) do { } while (0) -#endif /* pr_vdebug */ -# define ffs_dump_mem(prefix, ptr, len) do { } while (0) -#endif /* VERBOSE_DEBUG */ - -#define ENTER() pr_vdebug("%s()\n", __func__) - - -/* The data structure and setup file ****************************************/ - -enum ffs_state { - /* - * Waiting for descriptors and strings. - * - * In this state no open(2), read(2) or write(2) on epfiles - * may succeed (which should not be the problem as there - * should be no such files opened in the first place). - */ - FFS_READ_DESCRIPTORS, - FFS_READ_STRINGS, - - /* - * We've got descriptors and strings. We are or have called - * functionfs_ready_callback(). functionfs_bind() may have - * been called but we don't know. - * - * This is the only state in which operations on epfiles may - * succeed. - */ - FFS_ACTIVE, - - /* - * All endpoints have been closed. This state is also set if - * we encounter an unrecoverable error. The only - * unrecoverable error is situation when after reading strings - * from user space we fail to initialise epfiles or - * functionfs_ready_callback() returns with error (<0). - * - * In this state no open(2), read(2) or write(2) (both on ep0 - * as well as epfile) may succeed (at this point epfiles are - * unlinked and all closed so this is not a problem; ep0 is - * also closed but ep0 file exists and so open(2) on ep0 must - * fail). - */ - FFS_CLOSING -}; - - -enum ffs_setup_state { - /* There is no setup request pending. */ - FFS_NO_SETUP, - /* - * User has read events and there was a setup request event - * there. The next read/write on ep0 will handle the - * request. - */ - FFS_SETUP_PENDING, - /* - * There was event pending but before user space handled it - * some other event was introduced which canceled existing - * setup. If this state is set read/write on ep0 return - * -EIDRM. This state is only set when adding event. - */ - FFS_SETUP_CANCELED -}; - - - -struct ffs_epfile; -struct ffs_function; - -struct ffs_data { - struct usb_gadget *gadget; - - /* - * Protect access read/write operations, only one read/write - * at a time. As a consequence protects ep0req and company. - * While setup request is being processed (queued) this is - * held. - */ - struct mutex mutex; - - /* - * Protect access to endpoint related structures (basically - * usb_ep_queue(), usb_ep_dequeue(), etc. calls) except for - * endpoint zero. - */ - spinlock_t eps_lock; - - /* - * XXX REVISIT do we need our own request? Since we are not - * handling setup requests immediately user space may be so - * slow that another setup will be sent to the gadget but this - * time not to us but another function and then there could be - * a race. Is that the case? Or maybe we can use cdev->req - * after all, maybe we just need some spinlock for that? - */ - struct usb_request *ep0req; /* P: mutex */ - struct completion ep0req_completion; /* P: mutex */ - int ep0req_status; /* P: mutex */ - - /* reference counter */ - atomic_t ref; - /* how many files are opened (EP0 and others) */ - atomic_t opened; - - /* EP0 state */ - enum ffs_state state; - - /* - * Possible transitions: - * + FFS_NO_SETUP -> FFS_SETUP_PENDING -- P: ev.waitq.lock - * happens only in ep0 read which is P: mutex - * + FFS_SETUP_PENDING -> FFS_NO_SETUP -- P: ev.waitq.lock - * happens only in ep0 i/o which is P: mutex - * + FFS_SETUP_PENDING -> FFS_SETUP_CANCELED -- P: ev.waitq.lock - * + FFS_SETUP_CANCELED -> FFS_NO_SETUP -- cmpxchg - */ - enum ffs_setup_state setup_state; - -#define FFS_SETUP_STATE(ffs) \ - ((enum ffs_setup_state)cmpxchg(&(ffs)->setup_state, \ - FFS_SETUP_CANCELED, FFS_NO_SETUP)) - - /* Events & such. */ - struct { - u8 types[4]; - unsigned short count; - /* XXX REVISIT need to update it in some places, or do we? */ - unsigned short can_stall; - struct usb_ctrlrequest setup; - - wait_queue_head_t waitq; - } ev; /* the whole structure, P: ev.waitq.lock */ - - /* Flags */ - unsigned long flags; -#define FFS_FL_CALL_CLOSED_CALLBACK 0 -#define FFS_FL_BOUND 1 - - /* Active function */ - struct ffs_function *func; - - /* - * Device name, write once when file system is mounted. - * Intended for user to read if she wants. - */ - const char *dev_name; - /* Private data for our user (ie. gadget). Managed by user. */ - void *private_data; - - /* filled by __ffs_data_got_descs() */ - /* - * Real descriptors are 16 bytes after raw_descs (so you need - * to skip 16 bytes (ie. ffs->raw_descs + 16) to get to the - * first full speed descriptor). raw_descs_length and - * raw_fs_descs_length do not have those 16 bytes added. - */ - const void *raw_descs; - unsigned raw_descs_length; - unsigned raw_fs_descs_length; - unsigned fs_descs_count; - unsigned hs_descs_count; - - unsigned short strings_count; - unsigned short interfaces_count; - unsigned short eps_count; - unsigned short _pad1; - - /* filled by __ffs_data_got_strings() */ - /* ids in stringtabs are set in functionfs_bind() */ - const void *raw_strings; - struct usb_gadget_strings **stringtabs; - - /* - * File system's super block, write once when file system is - * mounted. - */ - struct super_block *sb; - - /* File permissions, written once when fs is mounted */ - struct ffs_file_perms { - umode_t mode; - kuid_t uid; - kgid_t gid; - } file_perms; - - /* - * The endpoint files, filled by ffs_epfiles_create(), - * destroyed by ffs_epfiles_destroy(). - */ - struct ffs_epfile *epfiles; -}; +/* Variable Length Array Macros **********************************************/ +#define vla_group(groupname) size_t groupname##__next = 0 +#define vla_group_size(groupname) groupname##__next + +#define vla_item(groupname, type, name, n) \ + size_t groupname##_##name##__offset = ({ \ + size_t align_mask = __alignof__(type) - 1; \ + size_t offset = (groupname##__next + align_mask) & ~align_mask;\ + size_t size = (n) * sizeof(type); \ + groupname##__next = offset + size; \ + offset; \ + }) + +#define vla_item_with_sz(groupname, type, name, n) \ + size_t groupname##_##name##__sz = (n) * sizeof(type); \ + size_t groupname##_##name##__offset = ({ \ + size_t align_mask = __alignof__(type) - 1; \ + size_t offset = (groupname##__next + align_mask) & ~align_mask;\ + size_t size = groupname##_##name##__sz; \ + groupname##__next = offset + size; \ + offset; \ + }) + +#define vla_ptr(ptr, groupname, name) \ + ((void *) ((char *)ptr + groupname##_##name##__offset)) /* Reference counter handling */ static void ffs_data_get(struct ffs_data *ffs); @@ -274,15 +98,12 @@ static struct ffs_function *ffs_func_from_usb(struct usb_function *f) return container_of(f, struct ffs_function, function); } -static void ffs_func_free(struct ffs_function *func); static void ffs_func_eps_disable(struct ffs_function *func); static int __must_check ffs_func_eps_enable(struct ffs_function *func); static int ffs_func_bind(struct usb_configuration *, struct usb_function *); -static void ffs_func_unbind(struct usb_configuration *, - struct usb_function *); static int ffs_func_set_alt(struct usb_function *, unsigned, unsigned); static void ffs_func_disable(struct usb_function *); static int ffs_func_setup(struct usb_function *, @@ -335,6 +156,17 @@ ffs_sb_create_file(struct super_block *sb, const char *name, void *data, const struct file_operations *fops, struct dentry **dentry_p); +/* Devices management *******************************************************/ + +DEFINE_MUTEX(ffs_lock); +EXPORT_SYMBOL(ffs_lock); + +static struct ffs_dev *ffs_find_dev(const char *name); +static int _ffs_name_dev(struct ffs_dev *dev, const char *name); +static void *ffs_acquire_dev(const char *dev_name); +static void ffs_release_dev(struct ffs_data *ffs_data); +static int ffs_ready(struct ffs_data *ffs); +static void ffs_closed(struct ffs_data *ffs); /* Misc helper functions ****************************************************/ @@ -460,7 +292,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, ffs->state = FFS_ACTIVE; mutex_unlock(&ffs->mutex); - ret = functionfs_ready_callback(ffs); + ret = ffs_ready(ffs); if (unlikely(ret < 0)) { ffs->state = FFS_CLOSING; return ret; @@ -753,78 +585,71 @@ static ssize_t ffs_epfile_io(struct file *file, char __user *buf, size_t len, int read) { struct ffs_epfile *epfile = file->private_data; + struct usb_gadget *gadget = epfile->ffs->gadget; struct ffs_ep *ep; char *data = NULL; - ssize_t ret; + ssize_t ret, data_len; int halt; - goto first_try; - do { - spin_unlock_irq(&epfile->ffs->eps_lock); - mutex_unlock(&epfile->mutex); + /* Are we still active? */ + if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) { + ret = -ENODEV; + goto error; + } -first_try: - /* Are we still active? */ - if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) { - ret = -ENODEV; + /* Wait for endpoint to be enabled */ + ep = epfile->ep; + if (!ep) { + if (file->f_flags & O_NONBLOCK) { + ret = -EAGAIN; goto error; } - /* Wait for endpoint to be enabled */ - ep = epfile->ep; - if (!ep) { - if (file->f_flags & O_NONBLOCK) { - ret = -EAGAIN; - goto error; - } - - if (wait_event_interruptible(epfile->wait, - (ep = epfile->ep))) { - ret = -EINTR; - goto error; - } - } - - /* Do we halt? */ - halt = !read == !epfile->in; - if (halt && epfile->isoc) { - ret = -EINVAL; + ret = wait_event_interruptible(epfile->wait, (ep = epfile->ep)); + if (ret) { + ret = -EINTR; goto error; } + } - /* Allocate & copy */ - if (!halt && !data) { - data = kzalloc(len, GFP_KERNEL); - if (unlikely(!data)) - return -ENOMEM; + /* Do we halt? */ + halt = !read == !epfile->in; + if (halt && epfile->isoc) { + ret = -EINVAL; + goto error; + } - if (!read && - unlikely(__copy_from_user(data, buf, len))) { - ret = -EFAULT; - goto error; - } - } + /* Allocate & copy */ + if (!halt) { + /* + * Controller may require buffer size to be aligned to + * maxpacketsize of an out endpoint. + */ + data_len = read ? usb_ep_align_maybe(gadget, ep->ep, len) : len; + + data = kmalloc(data_len, GFP_KERNEL); + if (unlikely(!data)) + return -ENOMEM; - /* We will be using request */ - ret = ffs_mutex_lock(&epfile->mutex, - file->f_flags & O_NONBLOCK); - if (unlikely(ret)) + if (!read && unlikely(copy_from_user(data, buf, len))) { + ret = -EFAULT; goto error; + } + } - /* - * We're called from user space, we can use _irq rather then - * _irqsave - */ - spin_lock_irq(&epfile->ffs->eps_lock); + /* We will be using request */ + ret = ffs_mutex_lock(&epfile->mutex, file->f_flags & O_NONBLOCK); + if (unlikely(ret)) + goto error; - /* - * While we were acquiring mutex endpoint got disabled - * or changed? - */ - } while (unlikely(epfile->ep != ep)); + spin_lock_irq(&epfile->ffs->eps_lock); - /* Halt */ - if (unlikely(halt)) { + if (epfile->ep != ep) { + /* In the meantime, endpoint got disabled or changed. */ + ret = -ESHUTDOWN; + spin_unlock_irq(&epfile->ffs->eps_lock); + } else if (halt) { + /* Halt */ if (likely(epfile->ep == ep) && !WARN_ON(!ep->ep)) usb_ep_set_halt(ep->ep); spin_unlock_irq(&epfile->ffs->eps_lock); @@ -837,7 +662,7 @@ first_try: req->context = &done; req->complete = ffs_epfile_io_complete; req->buf = data; - req->length = len; + req->length = data_len; ret = usb_ep_queue(ep->ep, req, GFP_ATOMIC); @@ -849,9 +674,17 @@ first_try: ret = -EINTR; usb_ep_dequeue(ep->ep, req); } else { + /* + * XXX We may end up silently droping data here. + * Since data_len (i.e. req->length) may be bigger + * than len (after being rounded up to maxpacketsize), + * we may end up with more data then user space has + * space for. + */ ret = ep->status; if (read && ret > 0 && - unlikely(copy_to_user(buf, data, ret))) + unlikely(copy_to_user(buf, data, + min_t(size_t, ret, len)))) ret = -EFAULT; } } @@ -1191,7 +1024,7 @@ ffs_fs_mount(struct file_system_type *t, int flags, return ERR_PTR(-ENOMEM); } - ffs_dev = functionfs_acquire_dev_callback(dev_name); + ffs_dev = ffs_acquire_dev(dev_name); if (IS_ERR(ffs_dev)) { ffs_data_put(ffs); return ERR_CAST(ffs_dev); @@ -1201,7 +1034,7 @@ ffs_fs_mount(struct file_system_type *t, int flags, rv = mount_nodev(t, flags, &data, ffs_sb_fill); if (IS_ERR(rv) && data.ffs_data) { - functionfs_release_dev_callback(data.ffs_data); + ffs_release_dev(data.ffs_data); ffs_data_put(data.ffs_data); } return rv; @@ -1214,7 +1047,7 @@ ffs_fs_kill_sb(struct super_block *sb) kill_litter_super(sb); if (sb->s_fs_info) { - functionfs_release_dev_callback(sb->s_fs_info); + ffs_release_dev(sb->s_fs_info); ffs_data_put(sb->s_fs_info); } } @@ -1327,7 +1160,7 @@ static void ffs_data_clear(struct ffs_data *ffs) ENTER(); if (test_and_clear_bit(FFS_FL_CALL_CLOSED_CALLBACK, &ffs->flags)) - functionfs_closed_callback(ffs); + ffs_closed(ffs); BUG_ON(ffs->gadget); @@ -1463,71 +1296,6 @@ static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count) kfree(epfiles); } -static int functionfs_bind_config(struct usb_composite_dev *cdev, - struct usb_configuration *c, - struct ffs_data *ffs) -{ - struct ffs_function *func; - int ret; - - ENTER(); - - func = kzalloc(sizeof *func, GFP_KERNEL); - if (unlikely(!func)) - return -ENOMEM; - - func->function.name = "Function FS Gadget"; - func->function.strings = ffs->stringtabs; - - func->function.bind = ffs_func_bind; - func->function.unbind = ffs_func_unbind; - func->function.set_alt = ffs_func_set_alt; - func->function.disable = ffs_func_disable; - func->function.setup = ffs_func_setup; - func->function.suspend = ffs_func_suspend; - func->function.resume = ffs_func_resume; - - func->conf = c; - func->gadget = cdev->gadget; - func->ffs = ffs; - ffs_data_get(ffs); - - ret = usb_add_function(c, &func->function); - if (unlikely(ret)) - ffs_func_free(func); - - return ret; -} - -static void ffs_func_free(struct ffs_function *func) -{ - struct ffs_ep *ep = func->eps; - unsigned count = func->ffs->eps_count; - unsigned long flags; - - ENTER(); - - /* cleanup after autoconfig */ - spin_lock_irqsave(&func->ffs->eps_lock, flags); - do { - if (ep->ep && ep->req) - usb_ep_free_request(ep->ep, ep->req); - ep->req = NULL; - ++ep; - } while (--count); - spin_unlock_irqrestore(&func->ffs->eps_lock, flags); - - ffs_data_put(func->ffs); - - kfree(func->eps); - /* - * eps and interfaces_nums are allocated in the same chunk so - * only one free is required. Descriptors are also allocated - * in the same chunk. - */ - - kfree(func); -} static void ffs_func_eps_disable(struct ffs_function *func) { @@ -1901,30 +1669,34 @@ static int __ffs_data_got_strings(struct ffs_data *ffs, /* Allocate everything in one chunk so there's less maintenance. */ { - struct { - struct usb_gadget_strings *stringtabs[lang_count + 1]; - struct usb_gadget_strings stringtab[lang_count]; - struct usb_string strings[lang_count*(needed_count+1)]; - } *d; unsigned i = 0; + vla_group(d); + vla_item(d, struct usb_gadget_strings *, stringtabs, + lang_count + 1); + vla_item(d, struct usb_gadget_strings, stringtab, lang_count); + vla_item(d, struct usb_string, strings, + lang_count*(needed_count+1)); + + char *vlabuf = kmalloc(vla_group_size(d), GFP_KERNEL); - d = kmalloc(sizeof *d, GFP_KERNEL); - if (unlikely(!d)) { + if (unlikely(!vlabuf)) { kfree(_data); return -ENOMEM; } - stringtabs = d->stringtabs; - t = d->stringtab; + /* Initialize the VLA pointers */ + stringtabs = vla_ptr(vlabuf, d, stringtabs); + t = vla_ptr(vlabuf, d, stringtab); i = lang_count; do { *stringtabs++ = t++; } while (--i); *stringtabs = NULL; - stringtabs = d->stringtabs; - t = d->stringtab; - s = d->strings; + /* stringtabs = vlabuf = d_stringtabs for later kfree */ + stringtabs = vla_ptr(vlabuf, d, stringtabs); + t = vla_ptr(vlabuf, d, stringtab); + s = vla_ptr(vlabuf, d, strings); strings = s; } @@ -2187,8 +1959,57 @@ static int __ffs_func_bind_do_nums(enum ffs_entity_type type, u8 *valuep, return 0; } -static int ffs_func_bind(struct usb_configuration *c, - struct usb_function *f) +static inline struct f_fs_opts *ffs_do_functionfs_bind(struct usb_function *f, + struct usb_configuration *c) +{ + struct ffs_function *func = ffs_func_from_usb(f); + struct f_fs_opts *ffs_opts = + container_of(f->fi, struct f_fs_opts, func_inst); + int ret; + + ENTER(); + + /* + * Legacy gadget triggers binding in functionfs_ready_callback, + * which already uses locking; taking the same lock here would + * cause a deadlock. + * + * Configfs-enabled gadgets however do need ffs_dev_lock. + */ + if (!ffs_opts->no_configfs) + ffs_dev_lock(); + ret = ffs_opts->dev->desc_ready ? 0 : -ENODEV; + func->ffs = ffs_opts->dev->ffs_data; + if (!ffs_opts->no_configfs) + ffs_dev_unlock(); + if (ret) + return ERR_PTR(ret); + + func->conf = c; + func->gadget = c->cdev->gadget; + + ffs_data_get(func->ffs); + + /* + * in drivers/usb/gadget/configfs.c:configfs_composite_bind() + * configurations are bound in sequence with list_for_each_entry, + * in each configuration its functions are bound in sequence + * with list_for_each_entry, so we assume no race condition + * with regard to ffs_opts->bound access + */ + if (!ffs_opts->refcnt) { + ret = functionfs_bind(func->ffs, c->cdev); + if (ret) + return ERR_PTR(ret); + } + ffs_opts->refcnt++; + func->function.strings = func->ffs->stringtabs; + + return ffs_opts; +} + +static int _ffs_func_bind(struct usb_configuration *c, + struct usb_function *f) { struct ffs_function *func = ffs_func_from_usb(f); struct ffs_data *ffs = func->ffs; @@ -2200,16 +2021,16 @@ static int ffs_func_bind(struct usb_configuration *c, int ret; /* Make it a single chunk, less management later on */ - struct { - struct ffs_ep eps[ffs->eps_count]; - struct usb_descriptor_header - *fs_descs[full ? ffs->fs_descs_count + 1 : 0]; - struct usb_descriptor_header - *hs_descs[high ? ffs->hs_descs_count + 1 : 0]; - short inums[ffs->interfaces_count]; - char raw_descs[high ? ffs->raw_descs_length - : ffs->raw_fs_descs_length]; - } *data; + vla_group(d); + vla_item_with_sz(d, struct ffs_ep, eps, ffs->eps_count); + vla_item_with_sz(d, struct usb_descriptor_header *, fs_descs, + full ? ffs->fs_descs_count + 1 : 0); + vla_item_with_sz(d, struct usb_descriptor_header *, hs_descs, + high ? ffs->hs_descs_count + 1 : 0); + vla_item_with_sz(d, short, inums, ffs->interfaces_count); + vla_item_with_sz(d, char, raw_descs, + high ? ffs->raw_descs_length : ffs->raw_fs_descs_length); + char *vlabuf; ENTER(); @@ -2217,21 +2038,28 @@ static int ffs_func_bind(struct usb_configuration *c, if (unlikely(!(full | high))) return -ENOTSUPP; - /* Allocate */ - data = kmalloc(sizeof *data, GFP_KERNEL); - if (unlikely(!data)) + /* Allocate a single chunk, less management later on */ + vlabuf = kmalloc(vla_group_size(d), GFP_KERNEL); + if (unlikely(!vlabuf)) return -ENOMEM; /* Zero */ - memset(data->eps, 0, sizeof data->eps); - memcpy(data->raw_descs, ffs->raw_descs + 16, sizeof data->raw_descs); - memset(data->inums, 0xff, sizeof data->inums); - for (ret = ffs->eps_count; ret; --ret) - data->eps[ret].num = -1; + memset(vla_ptr(vlabuf, d, eps), 0, d_eps__sz); + memcpy(vla_ptr(vlabuf, d, raw_descs), ffs->raw_descs + 16, + d_raw_descs__sz); + memset(vla_ptr(vlabuf, d, inums), 0xff, d_inums__sz); + for (ret = ffs->eps_count; ret; --ret) { + struct ffs_ep *ptr; + + ptr = vla_ptr(vlabuf, d, eps); + ptr[ret].num = -1; + } - /* Save pointers */ - func->eps = data->eps; - func->interfaces_nums = data->inums; + /* Save pointers + * d_eps == vlabuf, func->eps used to kfree vlabuf later + */ + func->eps = vla_ptr(vlabuf, d, eps); + func->interfaces_nums = vla_ptr(vlabuf, d, inums); /* * Go through all the endpoint descriptors and allocate @@ -2239,10 +2067,10 @@ static int ffs_func_bind(struct usb_configuration *c, * numbers without worrying that it may be described later on. */ if (likely(full)) { - func->function.fs_descriptors = data->fs_descs; + func->function.fs_descriptors = vla_ptr(vlabuf, d, fs_descs); ret = ffs_do_descs(ffs->fs_descs_count, - data->raw_descs, - sizeof data->raw_descs, + vla_ptr(vlabuf, d, raw_descs), + d_raw_descs__sz, __ffs_func_bind_do_descs, func); if (unlikely(ret < 0)) goto error; @@ -2251,10 +2079,10 @@ static int ffs_func_bind(struct usb_configuration *c, } if (likely(high)) { - func->function.hs_descriptors = data->hs_descs; + func->function.hs_descriptors = vla_ptr(vlabuf, d, hs_descs); ret = ffs_do_descs(ffs->hs_descs_count, - data->raw_descs + ret, - (sizeof data->raw_descs) - ret, + vla_ptr(vlabuf, d, raw_descs) + ret, + d_raw_descs__sz - ret, __ffs_func_bind_do_descs, func); if (unlikely(ret < 0)) goto error; @@ -2267,7 +2095,7 @@ static int ffs_func_bind(struct usb_configuration *c, */ ret = ffs_do_descs(ffs->fs_descs_count + (high ? ffs->hs_descs_count : 0), - data->raw_descs, sizeof data->raw_descs, + vla_ptr(vlabuf, d, raw_descs), d_raw_descs__sz, __ffs_func_bind_do_nums, func); if (unlikely(ret < 0)) goto error; @@ -2281,26 +2109,19 @@ error: return ret; } - -/* Other USB function hooks *************************************************/ - -static void ffs_func_unbind(struct usb_configuration *c, - struct usb_function *f) +static int ffs_func_bind(struct usb_configuration *c, + struct usb_function *f) { - struct ffs_function *func = ffs_func_from_usb(f); - struct ffs_data *ffs = func->ffs; + struct f_fs_opts *ffs_opts = ffs_do_functionfs_bind(f, c); - ENTER(); + if (IS_ERR(ffs_opts)) + return PTR_ERR(ffs_opts); - if (ffs->func == func) { - ffs_func_eps_disable(func); - ffs->func = NULL; - } + return _ffs_func_bind(c, f); +} - ffs_event_add(ffs, FUNCTIONFS_UNBIND); - ffs_func_free(func); -} +/* Other USB function hooks *************************************************/ static int ffs_func_set_alt(struct usb_function *f, unsigned interface, unsigned alt) @@ -2428,6 +2249,411 @@ static int ffs_func_revmap_intf(struct ffs_function *func, u8 intf) } +/* Devices management *******************************************************/ + +static LIST_HEAD(ffs_devices); + +static struct ffs_dev *_ffs_find_dev(const char *name) +{ + struct ffs_dev *dev; + + list_for_each_entry(dev, &ffs_devices, entry) { + if (!dev->name || !name) + continue; + if (strcmp(dev->name, name) == 0) + return dev; + } + + return NULL; +} + +/* + * ffs_lock must be taken by the caller of this function + */ +static struct ffs_dev *ffs_get_single_dev(void) +{ + struct ffs_dev *dev; + + if (list_is_singular(&ffs_devices)) { + dev = list_first_entry(&ffs_devices, struct ffs_dev, entry); + if (dev->single) + return dev; + } + + return NULL; +} + +/* + * ffs_lock must be taken by the caller of this function + */ +static struct ffs_dev *ffs_find_dev(const char *name) +{ + struct ffs_dev *dev; + + dev = ffs_get_single_dev(); + if (dev) + return dev; + + return _ffs_find_dev(name); +} + +/* Configfs support *********************************************************/ + +static inline struct f_fs_opts *to_ffs_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_fs_opts, + func_inst.group); +} + +static void ffs_attr_release(struct config_item *item) +{ + struct f_fs_opts *opts = to_ffs_opts(item); + + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations ffs_item_ops = { + .release = ffs_attr_release, +}; + +static struct config_item_type ffs_func_type = { + .ct_item_ops = &ffs_item_ops, + .ct_owner = THIS_MODULE, +}; + + +/* Function registration interface ******************************************/ + +static void ffs_free_inst(struct usb_function_instance *f) +{ + struct f_fs_opts *opts; + + opts = to_f_fs_opts(f); + ffs_dev_lock(); + ffs_free_dev(opts->dev); + ffs_dev_unlock(); + kfree(opts); +} + +#define MAX_INST_NAME_LEN 40 + +static int ffs_set_inst_name(struct usb_function_instance *fi, const char *name) +{ + struct f_fs_opts *opts; + char *ptr; + const char *tmp; + int name_len, ret; + + name_len = strlen(name) + 1; + if (name_len > MAX_INST_NAME_LEN) + return -ENAMETOOLONG; + + ptr = kstrndup(name, name_len, GFP_KERNEL); + if (!ptr) + return -ENOMEM; + + opts = to_f_fs_opts(fi); + tmp = NULL; + + ffs_dev_lock(); + + tmp = opts->dev->name_allocated ? opts->dev->name : NULL; + ret = _ffs_name_dev(opts->dev, ptr); + if (ret) { + kfree(ptr); + ffs_dev_unlock(); + return ret; + } + opts->dev->name_allocated = true; + + ffs_dev_unlock(); + + kfree(tmp); + + return 0; +} + +static struct usb_function_instance *ffs_alloc_inst(void) +{ + struct f_fs_opts *opts; + struct ffs_dev *dev; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + + opts->func_inst.set_inst_name = ffs_set_inst_name; + opts->func_inst.free_func_inst = ffs_free_inst; + ffs_dev_lock(); + dev = ffs_alloc_dev(); + ffs_dev_unlock(); + if (IS_ERR(dev)) { + kfree(opts); + return ERR_CAST(dev); + } + opts->dev = dev; + dev->opts = opts; + + config_group_init_type_name(&opts->func_inst.group, "", + &ffs_func_type); + return &opts->func_inst; +} + +static void ffs_free(struct usb_function *f) +{ + kfree(ffs_func_from_usb(f)); +} + +static void ffs_func_unbind(struct usb_configuration *c, + struct usb_function *f) +{ + struct ffs_function *func = ffs_func_from_usb(f); + struct ffs_data *ffs = func->ffs; + struct f_fs_opts *opts = + container_of(f->fi, struct f_fs_opts, func_inst); + struct ffs_ep *ep = func->eps; + unsigned count = ffs->eps_count; + unsigned long flags; + + ENTER(); + if (ffs->func == func) { + ffs_func_eps_disable(func); + ffs->func = NULL; + } + + if (!--opts->refcnt) + functionfs_unbind(ffs); + + /* cleanup after autoconfig */ + spin_lock_irqsave(&func->ffs->eps_lock, flags); + do { + if (ep->ep && ep->req) + usb_ep_free_request(ep->ep, ep->req); + ep->req = NULL; + ++ep; + } while (--count); + spin_unlock_irqrestore(&func->ffs->eps_lock, flags); + kfree(func->eps); + func->eps = NULL; + /* + * eps, descriptors and interfaces_nums are allocated in the + * same chunk so only one free is required. + */ + func->function.fs_descriptors = NULL; + func->function.hs_descriptors = NULL; + func->interfaces_nums = NULL; + + ffs_event_add(ffs, FUNCTIONFS_UNBIND); +} + +static struct usb_function *ffs_alloc(struct usb_function_instance *fi) +{ + struct ffs_function *func; + + ENTER(); + + func = kzalloc(sizeof(*func), GFP_KERNEL); + if (unlikely(!func)) + return ERR_PTR(-ENOMEM); + + func->function.name = "Function FS Gadget"; + + func->function.bind = ffs_func_bind; + func->function.unbind = ffs_func_unbind; + func->function.set_alt = ffs_func_set_alt; + func->function.disable = ffs_func_disable; + func->function.setup = ffs_func_setup; + func->function.suspend = ffs_func_suspend; + func->function.resume = ffs_func_resume; + func->function.free_func = ffs_free; + + return &func->function; +} + +/* + * ffs_lock must be taken by the caller of this function + */ +struct ffs_dev *ffs_alloc_dev(void) +{ + struct ffs_dev *dev; + int ret; + + if (ffs_get_single_dev()) + return ERR_PTR(-EBUSY); + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return ERR_PTR(-ENOMEM); + + if (list_empty(&ffs_devices)) { + ret = functionfs_init(); + if (ret) { + kfree(dev); + return ERR_PTR(ret); + } + } + + list_add(&dev->entry, &ffs_devices); + + return dev; +} + +/* + * ffs_lock must be taken by the caller of this function + * The caller is responsible for "name" being available whenever f_fs needs it + */ +static int _ffs_name_dev(struct ffs_dev *dev, const char *name) +{ + struct ffs_dev *existing; + + existing = _ffs_find_dev(name); + if (existing) + return -EBUSY; + + dev->name = name; + + return 0; +} + +/* + * The caller is responsible for "name" being available whenever f_fs needs it + */ +int ffs_name_dev(struct ffs_dev *dev, const char *name) +{ + int ret; + + ffs_dev_lock(); + ret = _ffs_name_dev(dev, name); + ffs_dev_unlock(); + + return ret; +} +EXPORT_SYMBOL(ffs_name_dev); + +int ffs_single_dev(struct ffs_dev *dev) +{ + int ret; + + ret = 0; + ffs_dev_lock(); + + if (!list_is_singular(&ffs_devices)) + ret = -EBUSY; + else + dev->single = true; + + ffs_dev_unlock(); + return ret; +} +EXPORT_SYMBOL(ffs_single_dev); + +/* + * ffs_lock must be taken by the caller of this function + */ +void ffs_free_dev(struct ffs_dev *dev) +{ + list_del(&dev->entry); + if (dev->name_allocated) + kfree(dev->name); + kfree(dev); + if (list_empty(&ffs_devices)) + functionfs_cleanup(); +} + +static void *ffs_acquire_dev(const char *dev_name) +{ + struct ffs_dev *ffs_dev; + + ENTER(); + ffs_dev_lock(); + + ffs_dev = ffs_find_dev(dev_name); + if (!ffs_dev) + ffs_dev = ERR_PTR(-ENODEV); + else if (ffs_dev->mounted) + ffs_dev = ERR_PTR(-EBUSY); + else if (ffs_dev->ffs_acquire_dev_callback && + ffs_dev->ffs_acquire_dev_callback(ffs_dev)) + ffs_dev = ERR_PTR(-ENODEV); + else + ffs_dev->mounted = true; + + ffs_dev_unlock(); + return ffs_dev; +} + +static void ffs_release_dev(struct ffs_data *ffs_data) +{ + struct ffs_dev *ffs_dev; + + ENTER(); + ffs_dev_lock(); + + ffs_dev = ffs_data->private_data; + if (ffs_dev) + ffs_dev->mounted = false; + + if (ffs_dev->ffs_release_dev_callback) + ffs_dev->ffs_release_dev_callback(ffs_dev); + + ffs_dev_unlock(); +} + +static int ffs_ready(struct ffs_data *ffs) +{ + struct ffs_dev *ffs_obj; + int ret = 0; + + ENTER(); + ffs_dev_lock(); + + ffs_obj = ffs->private_data; + if (!ffs_obj) { + ret = -EINVAL; + goto done; + } + if (WARN_ON(ffs_obj->desc_ready)) { + ret = -EBUSY; + goto done; + } + + ffs_obj->desc_ready = true; + ffs_obj->ffs_data = ffs; + + if (ffs_obj->ffs_ready_callback) + ret = ffs_obj->ffs_ready_callback(ffs); + +done: + ffs_dev_unlock(); + return ret; +} + +static void ffs_closed(struct ffs_data *ffs) +{ + struct ffs_dev *ffs_obj; + + ENTER(); + ffs_dev_lock(); + + ffs_obj = ffs->private_data; + if (!ffs_obj) + goto done; + + ffs_obj->desc_ready = false; + + if (ffs_obj->ffs_closed_callback) + ffs_obj->ffs_closed_callback(ffs); + + if (!ffs_obj->opts || ffs_obj->opts->no_configfs + || !ffs_obj->opts->func_inst.group.cg_item.ci_parent) + goto done; + + unregister_gadget_item(ffs_obj->opts-> + func_inst.group.cg_item.ci_parent->ci_parent); +done: + ffs_dev_unlock(); +} + /* Misc helper functions ****************************************************/ static int ffs_mutex_lock(struct mutex *mutex, unsigned nonblock) @@ -2458,3 +2684,7 @@ static char *ffs_prepare_buffer(const char __user *buf, size_t len) return data; } + +DECLARE_USB_FUNCTION_INIT(ffs, ffs_alloc_inst, ffs_alloc); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Michal Nazarewicz"); diff --git a/drivers/usb/gadget/f_hid.c b/drivers/usb/gadget/f_hid.c index 6e69a8e8d22..a95290a1289 100644 --- a/drivers/usb/gadget/f_hid.c +++ b/drivers/usb/gadget/f_hid.c @@ -20,6 +20,8 @@ #include <linux/sched.h> #include <linux/usb/g_hid.h> +#include "u_f.h" + static int major, minors; static struct class *hidg_class; @@ -334,20 +336,10 @@ static int f_hidg_open(struct inode *inode, struct file *fd) /*-------------------------------------------------------------------------*/ /* usb_function */ -static struct usb_request *hidg_alloc_ep_req(struct usb_ep *ep, unsigned length) +static inline struct usb_request *hidg_alloc_ep_req(struct usb_ep *ep, + unsigned length) { - struct usb_request *req; - - req = usb_ep_alloc_request(ep, GFP_ATOMIC); - if (req) { - req->length = length; - req->buf = kmalloc(length, GFP_ATOMIC); - if (!req->buf) { - usb_ep_free_request(ep, req); - req = NULL; - } - } - return req; + return alloc_ep_req(ep, length, length); } static void hidg_set_report_complete(struct usb_ep *ep, struct usb_request *req) diff --git a/drivers/usb/gadget/f_loopback.c b/drivers/usb/gadget/f_loopback.c index 4a3873a0f2d..4557cd03f0b 100644 --- a/drivers/usb/gadget/f_loopback.c +++ b/drivers/usb/gadget/f_loopback.c @@ -20,6 +20,7 @@ #include <linux/usb/composite.h> #include "g_zero.h" +#include "u_f.h" /* * LOOPBACK FUNCTION ... a testing vehicle for USB peripherals, @@ -119,7 +120,7 @@ static struct usb_endpoint_descriptor ss_loop_source_desc = { .wMaxPacketSize = cpu_to_le16(1024), }; -struct usb_ss_ep_comp_descriptor ss_loop_source_comp_desc = { +static struct usb_ss_ep_comp_descriptor ss_loop_source_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, .bMaxBurst = 0, @@ -135,7 +136,7 @@ static struct usb_endpoint_descriptor ss_loop_sink_desc = { .wMaxPacketSize = cpu_to_le16(1024), }; -struct usb_ss_ep_comp_descriptor ss_loop_sink_comp_desc = { +static struct usb_ss_ep_comp_descriptor ss_loop_sink_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, .bMaxBurst = 0, @@ -230,6 +231,14 @@ autoconf_fail: static void lb_free_func(struct usb_function *f) { + struct f_lb_opts *opts; + + opts = container_of(f->fi, struct f_lb_opts, func_inst); + + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); + usb_free_all_descriptors(f); kfree(func_to_loop(f)); } @@ -293,6 +302,11 @@ static void disable_loopback(struct f_loopback *loop) VDBG(cdev, "%s disabled\n", loop->function.name); } +static inline struct usb_request *lb_alloc_ep_req(struct usb_ep *ep, int len) +{ + return alloc_ep_req(ep, len, buflen); +} + static int enable_loopback(struct usb_composite_dev *cdev, struct f_loopback *loop) { @@ -332,7 +346,7 @@ fail0: * than 'buflen' bytes each. */ for (i = 0; i < qlen && result == 0; i++) { - req = alloc_ep_req(ep, 0); + req = lb_alloc_ep_req(ep, 0); if (req) { req->complete = loopback_complete; result = usb_ep_queue(ep, req, GFP_ATOMIC); @@ -380,6 +394,11 @@ static struct usb_function *loopback_alloc(struct usb_function_instance *fi) return ERR_PTR(-ENOMEM); lb_opts = container_of(fi, struct f_lb_opts, func_inst); + + mutex_lock(&lb_opts->lock); + lb_opts->refcnt++; + mutex_unlock(&lb_opts->lock); + buflen = lb_opts->bulk_buflen; qlen = lb_opts->qlen; if (!qlen) @@ -396,6 +415,118 @@ static struct usb_function *loopback_alloc(struct usb_function_instance *fi) return &loop->function; } +static inline struct f_lb_opts *to_f_lb_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_lb_opts, + func_inst.group); +} + +CONFIGFS_ATTR_STRUCT(f_lb_opts); +CONFIGFS_ATTR_OPS(f_lb_opts); + +static void lb_attr_release(struct config_item *item) +{ + struct f_lb_opts *lb_opts = to_f_lb_opts(item); + + usb_put_function_instance(&lb_opts->func_inst); +} + +static struct configfs_item_operations lb_item_ops = { + .release = lb_attr_release, + .show_attribute = f_lb_opts_attr_show, + .store_attribute = f_lb_opts_attr_store, +}; + +static ssize_t f_lb_opts_qlen_show(struct f_lb_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->qlen); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_lb_opts_qlen_store(struct f_lb_opts *opts, + const char *page, size_t len) +{ + int ret; + u32 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou32(page, 0, &num); + if (ret) + goto end; + + opts->qlen = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_lb_opts_attribute f_lb_opts_qlen = + __CONFIGFS_ATTR(qlen, S_IRUGO | S_IWUSR, + f_lb_opts_qlen_show, + f_lb_opts_qlen_store); + +static ssize_t f_lb_opts_bulk_buflen_show(struct f_lb_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->bulk_buflen); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_lb_opts_bulk_buflen_store(struct f_lb_opts *opts, + const char *page, size_t len) +{ + int ret; + u32 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou32(page, 0, &num); + if (ret) + goto end; + + opts->bulk_buflen = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_lb_opts_attribute f_lb_opts_bulk_buflen = + __CONFIGFS_ATTR(buflen, S_IRUGO | S_IWUSR, + f_lb_opts_bulk_buflen_show, + f_lb_opts_bulk_buflen_store); + +static struct configfs_attribute *lb_attrs[] = { + &f_lb_opts_qlen.attr, + &f_lb_opts_bulk_buflen.attr, + NULL, +}; + +static struct config_item_type lb_func_type = { + .ct_item_ops = &lb_item_ops, + .ct_attrs = lb_attrs, + .ct_owner = THIS_MODULE, +}; + static void lb_free_instance(struct usb_function_instance *fi) { struct f_lb_opts *lb_opts; @@ -411,7 +542,14 @@ static struct usb_function_instance *loopback_alloc_instance(void) lb_opts = kzalloc(sizeof(*lb_opts), GFP_KERNEL); if (!lb_opts) return ERR_PTR(-ENOMEM); + mutex_init(&lb_opts->lock); lb_opts->func_inst.free_func_inst = lb_free_instance; + lb_opts->bulk_buflen = GZERO_BULK_BUFLEN; + lb_opts->qlen = GZERO_QLEN; + + config_group_init_type_name(&lb_opts->func_inst.group, "", + &lb_func_type); + return &lb_opts->func_inst; } DECLARE_USB_FUNCTION(Loopback, loopback_alloc_instance, loopback_alloc); diff --git a/drivers/usb/gadget/f_midi.c b/drivers/usb/gadget/f_midi.c index 263e721c269..36d4bb23087 100644 --- a/drivers/usb/gadget/f_midi.c +++ b/drivers/usb/gadget/f_midi.c @@ -32,6 +32,8 @@ #include <linux/usb/audio.h> #include <linux/usb/midi.h> +#include "u_f.h" + MODULE_AUTHOR("Ben Williamson"); MODULE_LICENSE("GPL v2"); @@ -191,20 +193,10 @@ static struct usb_gadget_strings *midi_strings[] = { NULL, }; -static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length) +static inline struct usb_request *midi_alloc_ep_req(struct usb_ep *ep, + unsigned length) { - struct usb_request *req; - - req = usb_ep_alloc_request(ep, GFP_ATOMIC); - if (req) { - req->length = length; - req->buf = kmalloc(length, GFP_ATOMIC); - if (!req->buf) { - usb_ep_free_request(ep, req); - req = NULL; - } - } - return req; + return alloc_ep_req(ep, length, length); } static void free_ep_req(struct usb_ep *ep, struct usb_request *req) @@ -365,7 +357,7 @@ static int f_midi_set_alt(struct usb_function *f, unsigned intf, unsigned alt) /* allocate a bunch of read buffers and queue them all at once. */ for (i = 0; i < midi->qlen && err == 0; i++) { struct usb_request *req = - alloc_ep_req(midi->out_ep, midi->buflen); + midi_alloc_ep_req(midi->out_ep, midi->buflen); if (req == NULL) return -ENOMEM; @@ -546,7 +538,7 @@ static void f_midi_transmit(struct f_midi *midi, struct usb_request *req) return; if (!req) - req = alloc_ep_req(ep, midi->buflen); + req = midi_alloc_ep_req(ep, midi->buflen); if (!req) { ERROR(midi, "gmidi_transmit: alloc_ep_request failed\n"); diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c index 1c28fe13328..a9499fd3079 100644 --- a/drivers/usb/gadget/f_ncm.c +++ b/drivers/usb/gadget/f_ncm.c @@ -1386,7 +1386,7 @@ static void ncm_unbind(struct usb_configuration *c, struct usb_function *f) usb_ep_free_request(ncm->notify, ncm->notify_req); } -struct usb_function *ncm_alloc(struct usb_function_instance *fi) +static struct usb_function *ncm_alloc(struct usb_function_instance *fi) { struct f_ncm *ncm; struct f_ncm_opts *opts; diff --git a/drivers/usb/gadget/f_obex.c b/drivers/usb/gadget/f_obex.c index ad39f1dacba..aebae1853bc 100644 --- a/drivers/usb/gadget/f_obex.c +++ b/drivers/usb/gadget/f_obex.c @@ -499,7 +499,7 @@ static void obex_unbind(struct usb_configuration *c, struct usb_function *f) usb_free_all_descriptors(f); } -struct usb_function *obex_alloc(struct usb_function_instance *fi) +static struct usb_function *obex_alloc(struct usb_function_instance *fi) { struct f_obex *obex; struct f_serial_opts *opts; diff --git a/drivers/usb/gadget/f_phonet.c b/drivers/usb/gadget/f_phonet.c index eb3aa817a66..f2b781773ee 100644 --- a/drivers/usb/gadget/f_phonet.c +++ b/drivers/usb/gadget/f_phonet.c @@ -689,7 +689,7 @@ static void pn_unbind(struct usb_configuration *c, struct usb_function *f) usb_free_all_descriptors(f); } -struct usb_function *phonet_alloc(struct usb_function_instance *fi) +static struct usb_function *phonet_alloc(struct usb_function_instance *fi) { struct f_phonet *fp; struct f_phonet_opts *opts; diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 717ed7f9563..c11761ce511 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -675,7 +675,6 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) int status; struct usb_ep *ep; -#ifndef USB_FRNDIS_INCLUDED struct f_rndis_opts *rndis_opts; if (!can_support_rndis(c)) @@ -697,7 +696,7 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) return status; rndis_opts->bound = true; } -#endif + us = usb_gstrings_attach(cdev, rndis_strings, ARRAY_SIZE(rndis_string_defs)); if (IS_ERR(us)) @@ -782,13 +781,6 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) rndis->port.open = rndis_open; rndis->port.close = rndis_close; -#ifdef USB_FRNDIS_INCLUDED - status = rndis_register(rndis_response_available, rndis); - if (status < 0) - goto fail; - rndis->config = status; -#endif - rndis_set_param_medium(rndis->config, RNDIS_MEDIUM_802_3, 0); rndis_set_host_mac(rndis->config, rndis->ethaddr); @@ -830,66 +822,6 @@ fail: return status; } -#ifdef USB_FRNDIS_INCLUDED - -static void -rndis_old_unbind(struct usb_configuration *c, struct usb_function *f) -{ - struct f_rndis *rndis = func_to_rndis(f); - - rndis_deregister(rndis->config); - - usb_free_all_descriptors(f); - - kfree(rndis->notify_req->buf); - usb_ep_free_request(rndis->notify, rndis->notify_req); - - kfree(rndis); -} - -int -rndis_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], - u32 vendorID, const char *manufacturer, struct eth_dev *dev) -{ - struct f_rndis *rndis; - int status; - - /* allocate and initialize one new instance */ - status = -ENOMEM; - rndis = kzalloc(sizeof *rndis, GFP_KERNEL); - if (!rndis) - goto fail; - - memcpy(rndis->ethaddr, ethaddr, ETH_ALEN); - rndis->vendorID = vendorID; - rndis->manufacturer = manufacturer; - - rndis->port.ioport = dev; - /* RNDIS activates when the host changes this filter */ - rndis->port.cdc_filter = 0; - - /* RNDIS has special (and complex) framing */ - rndis->port.header_len = sizeof(struct rndis_packet_msg_type); - rndis->port.wrap = rndis_add_header; - rndis->port.unwrap = rndis_rm_hdr; - - rndis->port.func.name = "rndis"; - /* descriptors are per-instance copies */ - rndis->port.func.bind = rndis_bind; - rndis->port.func.unbind = rndis_old_unbind; - rndis->port.func.set_alt = rndis_set_alt; - rndis->port.func.setup = rndis_setup; - rndis->port.func.disable = rndis_disable; - - status = usb_add_function(c, &rndis->port.func); - if (status) - kfree(rndis); -fail: - return status; -} - -#else - void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net) { struct f_rndis_opts *opts; @@ -1047,8 +979,26 @@ static struct usb_function *rndis_alloc(struct usb_function_instance *fi) return &rndis->port.func; } -DECLARE_USB_FUNCTION_INIT(rndis, rndis_alloc_inst, rndis_alloc); +DECLARE_USB_FUNCTION(rndis, rndis_alloc_inst, rndis_alloc); + +static int __init rndis_mod_init(void) +{ + int ret; + + ret = rndis_init(); + if (ret) + return ret; + + return usb_function_register(&rndisusb_func); +} +module_init(rndis_mod_init); + +static void __exit rndis_mod_exit(void) +{ + usb_function_unregister(&rndisusb_func); + rndis_exit(); +} +module_exit(rndis_mod_exit); + MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Brownell"); - -#endif diff --git a/drivers/usb/gadget/f_serial.c b/drivers/usb/gadget/f_serial.c index 981113c9924..9ecbcbf36a4 100644 --- a/drivers/usb/gadget/f_serial.c +++ b/drivers/usb/gadget/f_serial.c @@ -354,7 +354,7 @@ static void gser_unbind(struct usb_configuration *c, struct usb_function *f) usb_free_all_descriptors(f); } -struct usb_function *gser_alloc(struct usb_function_instance *fi) +static struct usb_function *gser_alloc(struct usb_function_instance *fi) { struct f_gser *gser; struct f_serial_opts *opts; diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c index a8895859a22..d3cd52db78f 100644 --- a/drivers/usb/gadget/f_sourcesink.c +++ b/drivers/usb/gadget/f_sourcesink.c @@ -21,6 +21,7 @@ #include "g_zero.h" #include "gadget_chips.h" +#include "u_f.h" /* * SOURCE/SINK FUNCTION ... a primary testing vehicle for USB peripheral @@ -201,7 +202,7 @@ static struct usb_endpoint_descriptor ss_source_desc = { .wMaxPacketSize = cpu_to_le16(1024), }; -struct usb_ss_ep_comp_descriptor ss_source_comp_desc = { +static struct usb_ss_ep_comp_descriptor ss_source_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, @@ -218,7 +219,7 @@ static struct usb_endpoint_descriptor ss_sink_desc = { .wMaxPacketSize = cpu_to_le16(1024), }; -struct usb_ss_ep_comp_descriptor ss_sink_comp_desc = { +static struct usb_ss_ep_comp_descriptor ss_sink_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, @@ -236,7 +237,7 @@ static struct usb_endpoint_descriptor ss_iso_source_desc = { .bInterval = 4, }; -struct usb_ss_ep_comp_descriptor ss_iso_source_comp_desc = { +static struct usb_ss_ep_comp_descriptor ss_iso_source_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, @@ -254,7 +255,7 @@ static struct usb_endpoint_descriptor ss_iso_sink_desc = { .bInterval = 4, }; -struct usb_ss_ep_comp_descriptor ss_iso_sink_comp_desc = { +static struct usb_ss_ep_comp_descriptor ss_iso_sink_comp_desc = { .bLength = USB_DT_SS_EP_COMP_SIZE, .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, @@ -301,23 +302,9 @@ static struct usb_gadget_strings *sourcesink_strings[] = { /*-------------------------------------------------------------------------*/ -struct usb_request *alloc_ep_req(struct usb_ep *ep, int len) +static inline struct usb_request *ss_alloc_ep_req(struct usb_ep *ep, int len) { - struct usb_request *req; - - req = usb_ep_alloc_request(ep, GFP_ATOMIC); - if (req) { - if (len) - req->length = len; - else - req->length = buflen; - req->buf = kmalloc(req->length, GFP_ATOMIC); - if (!req->buf) { - usb_ep_free_request(ep, req); - req = NULL; - } - } - return req; + return alloc_ep_req(ep, len, buflen); } void free_ep_req(struct usb_ep *ep, struct usb_request *req) @@ -490,6 +477,14 @@ no_iso: static void sourcesink_free_func(struct usb_function *f) { + struct f_ss_opts *opts; + + opts = container_of(f->fi, struct f_ss_opts, func_inst); + + mutex_lock(&opts->lock); + opts->refcnt--; + mutex_unlock(&opts->lock); + usb_free_all_descriptors(f); kfree(func_to_ss(f)); } @@ -628,10 +623,10 @@ static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in, break; } ep = is_in ? ss->iso_in_ep : ss->iso_out_ep; - req = alloc_ep_req(ep, size); + req = ss_alloc_ep_req(ep, size); } else { ep = is_in ? ss->in_ep : ss->out_ep; - req = alloc_ep_req(ep, 0); + req = ss_alloc_ep_req(ep, 0); } if (!req) @@ -878,6 +873,11 @@ static struct usb_function *source_sink_alloc_func( return NULL; ss_opts = container_of(fi, struct f_ss_opts, func_inst); + + mutex_lock(&ss_opts->lock); + ss_opts->refcnt++; + mutex_unlock(&ss_opts->lock); + pattern = ss_opts->pattern; isoc_interval = ss_opts->isoc_interval; isoc_maxpacket = ss_opts->isoc_maxpacket; @@ -898,6 +898,303 @@ static struct usb_function *source_sink_alloc_func( return &ss->function; } +static inline struct f_ss_opts *to_f_ss_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_ss_opts, + func_inst.group); +} + +CONFIGFS_ATTR_STRUCT(f_ss_opts); +CONFIGFS_ATTR_OPS(f_ss_opts); + +static void ss_attr_release(struct config_item *item) +{ + struct f_ss_opts *ss_opts = to_f_ss_opts(item); + + usb_put_function_instance(&ss_opts->func_inst); +} + +static struct configfs_item_operations ss_item_ops = { + .release = ss_attr_release, + .show_attribute = f_ss_opts_attr_show, + .store_attribute = f_ss_opts_attr_store, +}; + +static ssize_t f_ss_opts_pattern_show(struct f_ss_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->pattern); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_pattern_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u8 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou8(page, 0, &num); + if (ret) + goto end; + + if (num != 0 && num != 1 && num != 2) { + ret = -EINVAL; + goto end; + } + + opts->pattern = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_ss_opts_attribute f_ss_opts_pattern = + __CONFIGFS_ATTR(pattern, S_IRUGO | S_IWUSR, + f_ss_opts_pattern_show, + f_ss_opts_pattern_store); + +static ssize_t f_ss_opts_isoc_interval_show(struct f_ss_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->isoc_interval); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_isoc_interval_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u8 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou8(page, 0, &num); + if (ret) + goto end; + + if (num > 16) { + ret = -EINVAL; + goto end; + } + + opts->isoc_interval = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_ss_opts_attribute f_ss_opts_isoc_interval = + __CONFIGFS_ATTR(isoc_interval, S_IRUGO | S_IWUSR, + f_ss_opts_isoc_interval_show, + f_ss_opts_isoc_interval_store); + +static ssize_t f_ss_opts_isoc_maxpacket_show(struct f_ss_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->isoc_maxpacket); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_isoc_maxpacket_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u16 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou16(page, 0, &num); + if (ret) + goto end; + + if (num > 1024) { + ret = -EINVAL; + goto end; + } + + opts->isoc_maxpacket = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_ss_opts_attribute f_ss_opts_isoc_maxpacket = + __CONFIGFS_ATTR(isoc_maxpacket, S_IRUGO | S_IWUSR, + f_ss_opts_isoc_maxpacket_show, + f_ss_opts_isoc_maxpacket_store); + +static ssize_t f_ss_opts_isoc_mult_show(struct f_ss_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->isoc_mult); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_isoc_mult_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u8 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou8(page, 0, &num); + if (ret) + goto end; + + if (num > 2) { + ret = -EINVAL; + goto end; + } + + opts->isoc_mult = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_ss_opts_attribute f_ss_opts_isoc_mult = + __CONFIGFS_ATTR(isoc_mult, S_IRUGO | S_IWUSR, + f_ss_opts_isoc_mult_show, + f_ss_opts_isoc_mult_store); + +static ssize_t f_ss_opts_isoc_maxburst_show(struct f_ss_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->isoc_maxburst); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_isoc_maxburst_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u8 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou8(page, 0, &num); + if (ret) + goto end; + + if (num > 15) { + ret = -EINVAL; + goto end; + } + + opts->isoc_maxburst = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_ss_opts_attribute f_ss_opts_isoc_maxburst = + __CONFIGFS_ATTR(isoc_maxburst, S_IRUGO | S_IWUSR, + f_ss_opts_isoc_maxburst_show, + f_ss_opts_isoc_maxburst_store); + +static ssize_t f_ss_opts_bulk_buflen_show(struct f_ss_opts *opts, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d", opts->bulk_buflen); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_ss_opts_bulk_buflen_store(struct f_ss_opts *opts, + const char *page, size_t len) +{ + int ret; + u32 num; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou32(page, 0, &num); + if (ret) + goto end; + + opts->bulk_buflen = num; + ret = len; +end: + mutex_unlock(&opts->lock); + return ret; +} + +static struct f_ss_opts_attribute f_ss_opts_bulk_buflen = + __CONFIGFS_ATTR(buflen, S_IRUGO | S_IWUSR, + f_ss_opts_bulk_buflen_show, + f_ss_opts_bulk_buflen_store); + +static struct configfs_attribute *ss_attrs[] = { + &f_ss_opts_pattern.attr, + &f_ss_opts_isoc_interval.attr, + &f_ss_opts_isoc_maxpacket.attr, + &f_ss_opts_isoc_mult.attr, + &f_ss_opts_isoc_maxburst.attr, + &f_ss_opts_bulk_buflen.attr, + NULL, +}; + +static struct config_item_type ss_func_type = { + .ct_item_ops = &ss_item_ops, + .ct_attrs = ss_attrs, + .ct_owner = THIS_MODULE, +}; + static void source_sink_free_instance(struct usb_function_instance *fi) { struct f_ss_opts *ss_opts; @@ -913,7 +1210,15 @@ static struct usb_function_instance *source_sink_alloc_inst(void) ss_opts = kzalloc(sizeof(*ss_opts), GFP_KERNEL); if (!ss_opts) return ERR_PTR(-ENOMEM); + mutex_init(&ss_opts->lock); ss_opts->func_inst.free_func_inst = source_sink_free_instance; + ss_opts->isoc_interval = GZERO_ISOC_INTERVAL; + ss_opts->isoc_maxpacket = GZERO_ISOC_MAXPACKET; + ss_opts->bulk_buflen = GZERO_BULK_BUFLEN; + + config_group_init_type_name(&ss_opts->func_inst.group, "", + &ss_func_type); + return &ss_opts->func_inst; } DECLARE_USB_FUNCTION(SourceSink, source_sink_alloc_inst, diff --git a/drivers/usb/gadget/f_subset.c b/drivers/usb/gadget/f_subset.c index 7c8674fa7e8..f1a59190ac9 100644 --- a/drivers/usb/gadget/f_subset.c +++ b/drivers/usb/gadget/f_subset.c @@ -301,7 +301,6 @@ geth_bind(struct usb_configuration *c, struct usb_function *f) int status; struct usb_ep *ep; -#ifndef USB_FSUBSET_INCLUDED struct f_gether_opts *gether_opts; gether_opts = container_of(f->fi, struct f_gether_opts, func_inst); @@ -322,7 +321,7 @@ geth_bind(struct usb_configuration *c, struct usb_function *f) return status; gether_opts->bound = true; } -#endif + us = usb_gstrings_attach(cdev, geth_strings, ARRAY_SIZE(geth_string_defs)); if (IS_ERR(us)) @@ -393,61 +392,6 @@ fail: return status; } -#ifdef USB_FSUBSET_INCLUDED - -static void -geth_old_unbind(struct usb_configuration *c, struct usb_function *f) -{ - geth_string_defs[0].id = 0; - usb_free_all_descriptors(f); - kfree(func_to_geth(f)); -} - -/** - * geth_bind_config - add CDC Subset network link to a configuration - * @c: the configuration to support the network link - * @ethaddr: a buffer in which the ethernet address of the host side - * side of the link was recorded - * @dev: eth_dev structure - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gether_setup(). Caller is also responsible - * for calling @gether_cleanup() before module unload. - */ -int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], - struct eth_dev *dev) -{ - struct f_gether *geth; - int status; - - /* allocate and initialize one new instance */ - geth = kzalloc(sizeof *geth, GFP_KERNEL); - if (!geth) - return -ENOMEM; - - /* export host's Ethernet address in CDC format */ - snprintf(geth->ethaddr, sizeof geth->ethaddr, "%pm", ethaddr); - geth_string_defs[1].s = geth->ethaddr; - - geth->port.ioport = dev; - geth->port.cdc_filter = DEFAULT_FILTER; - - geth->port.func.name = "cdc_subset"; - geth->port.func.bind = geth_bind; - geth->port.func.unbind = geth_old_unbind; - geth->port.func.set_alt = geth_set_alt; - geth->port.func.disable = geth_disable; - - status = usb_add_function(c, &geth->port.func); - if (status) - kfree(geth); - return status; -} - -#else - static inline struct f_gether_opts *to_f_gether_opts(struct config_item *item) { return container_of(to_config_group(item), struct f_gether_opts, @@ -573,5 +517,3 @@ static struct usb_function *geth_alloc(struct usb_function_instance *fi) DECLARE_USB_FUNCTION_INIT(geth, geth_alloc_inst, geth_alloc); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Brownell"); - -#endif diff --git a/drivers/usb/gadget/fotg210-udc.c b/drivers/usb/gadget/fotg210-udc.c index bbbfd194877..2d0305280e8 100644 --- a/drivers/usb/gadget/fotg210-udc.c +++ b/drivers/usb/gadget/fotg210-udc.c @@ -1157,8 +1157,9 @@ static int fotg210_udc_probe(struct platform_device *pdev) INIT_LIST_HEAD(&ep->queue); ep->ep.name = fotg210_ep_name[i]; ep->ep.ops = &fotg210_ep_ops; + usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); } - fotg210->ep[0]->ep.maxpacket = 0x40; + usb_ep_set_maxpacket_limit(&fotg210->ep[0]->ep, 0x40); fotg210->gadget.ep0 = &fotg210->ep[0]->ep; INIT_LIST_HEAD(&fotg210->gadget.ep0->ep_list); diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c index 6315ee698d4..f60d4da8f2c 100644 --- a/drivers/usb/gadget/fsl_qe_udc.c +++ b/drivers/usb/gadget/fsl_qe_udc.c @@ -2429,7 +2429,7 @@ static int qe_ep_config(struct qe_udc *udc, unsigned char pipe_num) ep->ep.ops = &qe_ep_ops; ep->stopped = 1; - ep->ep.maxpacket = (unsigned short) ~0; + usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); ep->ep.desc = NULL; ep->dir = 0xff; ep->epnum = (u8)pipe_num; diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index b7dea4eec32..15960af0f67 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -2311,7 +2311,7 @@ static int __init struct_ep_setup(struct fsl_udc *udc, unsigned char index, /* for ep0: maxP defined in desc * for other eps, maxP is set by epautoconfig() called by gadget layer */ - ep->ep.maxpacket = (unsigned short) ~0; + usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); /* the queue lists any req for this ep */ INIT_LIST_HEAD(&ep->queue); @@ -2469,7 +2469,8 @@ static int __init fsl_udc_probe(struct platform_device *pdev) * for other eps, gadget layer called ep_enable with defined desc */ udc_controller->eps[0].ep.desc = &fsl_ep0_desc; - udc_controller->eps[0].ep.maxpacket = USB_MAX_CTRL_PAYLOAD; + usb_ep_set_maxpacket_limit(&udc_controller->eps[0].ep, + USB_MAX_CTRL_PAYLOAD); /* setup the udc->eps[] for non-control endpoints and link * to gadget.ep_list */ diff --git a/drivers/usb/gadget/fusb300_udc.c b/drivers/usb/gadget/fusb300_udc.c index b278abe5245..6423f1840ed 100644 --- a/drivers/usb/gadget/fusb300_udc.c +++ b/drivers/usb/gadget/fusb300_udc.c @@ -1452,9 +1452,9 @@ static int __init fusb300_probe(struct platform_device *pdev) INIT_LIST_HEAD(&ep->queue); ep->ep.name = fusb300_ep_name[i]; ep->ep.ops = &fusb300_ep_ops; - ep->ep.maxpacket = HS_BULK_MAX_PACKET_SIZE; + usb_ep_set_maxpacket_limit(&ep->ep, HS_BULK_MAX_PACKET_SIZE); } - fusb300->ep[0]->ep.maxpacket = HS_CTL_MAX_PACKET_SIZE; + usb_ep_set_maxpacket_limit(&fusb300->ep[0]->ep, HS_CTL_MAX_PACKET_SIZE); fusb300->ep[0]->epnum = 0; fusb300->gadget.ep0 = &fusb300->ep[0]->ep; INIT_LIST_HEAD(&fusb300->gadget.ep0->ep_list); diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c index 2344efe4f4c..fe12e6a2744 100644 --- a/drivers/usb/gadget/g_ffs.c +++ b/drivers/usb/gadget/g_ffs.c @@ -13,14 +13,10 @@ #define pr_fmt(fmt) "g_ffs: " fmt #include <linux/module.h> -/* - * kbuild is not very cooperative with respect to linking separately - * compiled library objects into one module. So for now we won't use - * separate compilation ... ensuring init/exit sections work to shrink - * the runtime footprint, and giving us at least some parts of what - * a "gcc --combine ... part1.c part2.c part3.c ... " build would. - */ + #if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS +#include <linux/netdevice.h> + # if defined USB_ETH_RNDIS # undef USB_ETH_RNDIS # endif @@ -28,31 +24,31 @@ # define USB_ETH_RNDIS y # endif -#define USBF_ECM_INCLUDED -# include "f_ecm.c" -#define USB_FSUBSET_INCLUDED -# include "f_subset.c" +# include "u_ecm.h" +# include "u_gether.h" # ifdef USB_ETH_RNDIS -# define USB_FRNDIS_INCLUDED -# include "f_rndis.c" +# include "u_rndis.h" # include "rndis.h" # endif # include "u_ether.h" -static u8 gfs_host_mac[ETH_ALEN]; -static struct eth_dev *the_dev; +USB_ETHERNET_MODULE_PARAMETERS(); + # ifdef CONFIG_USB_FUNCTIONFS_ETH -static int eth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], - struct eth_dev *dev); +static int eth_bind_config(struct usb_configuration *c); +static struct usb_function_instance *fi_ecm; +static struct usb_function *f_ecm; +static struct usb_function_instance *fi_geth; +static struct usb_function *f_geth; +# endif +# ifdef CONFIG_USB_FUNCTIONFS_RNDIS +static int bind_rndis_config(struct usb_configuration *c); +static struct usb_function_instance *fi_rndis; +static struct usb_function *f_rndis; # endif -#else -# define the_dev NULL -# define gether_cleanup(dev) do { } while (0) -# define gfs_host_mac NULL -struct eth_dev; #endif -#include "f_fs.c" +#include "u_fs.h" #define DRIVER_NAME "g_ffs" #define DRIVER_DESC "USB Function Filesystem" @@ -67,19 +63,8 @@ MODULE_LICENSE("GPL"); #define GFS_MAX_DEVS 10 -struct gfs_ffs_obj { - const char *name; - bool mounted; - bool desc_ready; - struct ffs_data *ffs_data; -}; - USB_GADGET_COMPOSITE_OPTIONS(); -#if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS -USB_ETHERNET_MODULE_PARAMETERS(); -#endif - static struct usb_device_descriptor gfs_dev_desc = { .bLength = sizeof gfs_dev_desc, .bDescriptorType = USB_DT_DEVICE, @@ -146,12 +131,12 @@ static struct usb_gadget_strings *gfs_dev_strings[] = { struct gfs_configuration { struct usb_configuration c; - int (*eth)(struct usb_configuration *c, u8 *ethaddr, - struct eth_dev *dev); + int (*eth)(struct usb_configuration *c); + int num; } gfs_configurations[] = { #ifdef CONFIG_USB_FUNCTIONFS_RNDIS { - .eth = rndis_bind_config, + .eth = bind_rndis_config, }, #endif @@ -167,10 +152,15 @@ struct gfs_configuration { #endif }; +static void *functionfs_acquire_dev(struct ffs_dev *dev); +static void functionfs_release_dev(struct ffs_dev *dev); +static int functionfs_ready_callback(struct ffs_data *ffs); +static void functionfs_closed_callback(struct ffs_data *ffs); static int gfs_bind(struct usb_composite_dev *cdev); static int gfs_unbind(struct usb_composite_dev *cdev); static int gfs_do_config(struct usb_configuration *c); + static __refdata struct usb_composite_driver gfs_driver = { .name = DRIVER_NAME, .dev = &gfs_dev_desc, @@ -180,206 +170,244 @@ static __refdata struct usb_composite_driver gfs_driver = { .unbind = gfs_unbind, }; -static DEFINE_MUTEX(gfs_lock); static unsigned int missing_funcs; -static bool gfs_ether_setup; static bool gfs_registered; static bool gfs_single_func; -static struct gfs_ffs_obj *ffs_tab; +static struct usb_function_instance **fi_ffs; +static struct usb_function **f_ffs[] = { +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + NULL, +#endif + +#ifdef CONFIG_USB_FUNCTIONFS_ETH + NULL, +#endif + +#ifdef CONFIG_USB_FUNCTIONFS_GENERIC + NULL, +#endif +}; + +#define N_CONF ARRAY_SIZE(f_ffs) static int __init gfs_init(void) { + struct f_fs_opts *opts; int i; + int ret = 0; ENTER(); - if (!func_num) { + if (func_num < 2) { gfs_single_func = true; func_num = 1; } - ffs_tab = kcalloc(func_num, sizeof *ffs_tab, GFP_KERNEL); - if (!ffs_tab) - return -ENOMEM; + /* + * Allocate in one chunk for easier maintenance + */ + f_ffs[0] = kcalloc(func_num * N_CONF, sizeof(*f_ffs), GFP_KERNEL); + if (!f_ffs[0]) { + ret = -ENOMEM; + goto no_func; + } + for (i = 1; i < N_CONF; ++i) + f_ffs[i] = f_ffs[0] + i * func_num; - if (!gfs_single_func) - for (i = 0; i < func_num; i++) - ffs_tab[i].name = func_names[i]; + fi_ffs = kcalloc(func_num, sizeof(*fi_ffs), GFP_KERNEL); + if (!fi_ffs) { + ret = -ENOMEM; + goto no_func; + } + + for (i = 0; i < func_num; i++) { + fi_ffs[i] = usb_get_function_instance("ffs"); + if (IS_ERR(fi_ffs[i])) { + ret = PTR_ERR(fi_ffs[i]); + --i; + goto no_dev; + } + opts = to_f_fs_opts(fi_ffs[i]); + if (gfs_single_func) + ret = ffs_single_dev(opts->dev); + else + ret = ffs_name_dev(opts->dev, func_names[i]); + if (ret) + goto no_dev; + opts->dev->ffs_ready_callback = functionfs_ready_callback; + opts->dev->ffs_closed_callback = functionfs_closed_callback; + opts->dev->ffs_acquire_dev_callback = functionfs_acquire_dev; + opts->dev->ffs_release_dev_callback = functionfs_release_dev; + opts->no_configfs = true; + } missing_funcs = func_num; - return functionfs_init(); + return 0; +no_dev: + while (i >= 0) + usb_put_function_instance(fi_ffs[i--]); + kfree(fi_ffs); +no_func: + kfree(f_ffs[0]); + return ret; } module_init(gfs_init); static void __exit gfs_exit(void) { + int i; + ENTER(); - mutex_lock(&gfs_lock); if (gfs_registered) usb_composite_unregister(&gfs_driver); gfs_registered = false; - functionfs_cleanup(); + kfree(f_ffs[0]); + + for (i = 0; i < func_num; i++) + usb_put_function_instance(fi_ffs[i]); - mutex_unlock(&gfs_lock); - kfree(ffs_tab); + kfree(fi_ffs); } module_exit(gfs_exit); -static struct gfs_ffs_obj *gfs_find_dev(const char *dev_name) +static void *functionfs_acquire_dev(struct ffs_dev *dev) { - int i; - - ENTER(); - - if (gfs_single_func) - return &ffs_tab[0]; - - for (i = 0; i < func_num; i++) - if (strcmp(ffs_tab[i].name, dev_name) == 0) - return &ffs_tab[i]; + if (!try_module_get(THIS_MODULE)) + return ERR_PTR(-ENODEV); + + return 0; +} - return NULL; +static void functionfs_release_dev(struct ffs_dev *dev) +{ + module_put(THIS_MODULE); } +/* + * The caller of this function takes ffs_lock + */ static int functionfs_ready_callback(struct ffs_data *ffs) { - struct gfs_ffs_obj *ffs_obj; - int ret; - - ENTER(); - mutex_lock(&gfs_lock); + int ret = 0; - ffs_obj = ffs->private_data; - if (!ffs_obj) { - ret = -EINVAL; - goto done; - } + if (--missing_funcs) + return 0; - if (WARN_ON(ffs_obj->desc_ready)) { - ret = -EBUSY; - goto done; - } - ffs_obj->desc_ready = true; - ffs_obj->ffs_data = ffs; - - if (--missing_funcs) { - ret = 0; - goto done; - } + if (gfs_registered) + return -EBUSY; - if (gfs_registered) { - ret = -EBUSY; - goto done; - } gfs_registered = true; ret = usb_composite_probe(&gfs_driver); if (unlikely(ret < 0)) gfs_registered = false; - -done: - mutex_unlock(&gfs_lock); + return ret; } +/* + * The caller of this function takes ffs_lock + */ static void functionfs_closed_callback(struct ffs_data *ffs) { - struct gfs_ffs_obj *ffs_obj; - - ENTER(); - mutex_lock(&gfs_lock); - - ffs_obj = ffs->private_data; - if (!ffs_obj) - goto done; - - ffs_obj->desc_ready = false; missing_funcs++; if (gfs_registered) usb_composite_unregister(&gfs_driver); gfs_registered = false; - -done: - mutex_unlock(&gfs_lock); } -static void *functionfs_acquire_dev_callback(const char *dev_name) +/* + * It is assumed that gfs_bind is called from a context where ffs_lock is held + */ +static int gfs_bind(struct usb_composite_dev *cdev) { - struct gfs_ffs_obj *ffs_dev; +#if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS + struct net_device *net; +#endif + int ret, i; ENTER(); - mutex_lock(&gfs_lock); - - ffs_dev = gfs_find_dev(dev_name); - if (!ffs_dev) { - ffs_dev = ERR_PTR(-ENODEV); - goto done; - } - if (ffs_dev->mounted) { - ffs_dev = ERR_PTR(-EBUSY); - goto done; + if (missing_funcs) + return -ENODEV; +#if defined CONFIG_USB_FUNCTIONFS_ETH + if (can_support_ecm(cdev->gadget)) { + struct f_ecm_opts *ecm_opts; + + fi_ecm = usb_get_function_instance("ecm"); + if (IS_ERR(fi_ecm)) + return PTR_ERR(fi_ecm); + ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst); + net = ecm_opts->net; + } else { + struct f_gether_opts *geth_opts; + + fi_geth = usb_get_function_instance("geth"); + if (IS_ERR(fi_geth)) + return PTR_ERR(fi_geth); + geth_opts = container_of(fi_geth, struct f_gether_opts, + func_inst); + net = geth_opts->net; } - ffs_dev->mounted = true; +#endif -done: - mutex_unlock(&gfs_lock); - return ffs_dev; -} +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + { + struct f_rndis_opts *rndis_opts; -static void functionfs_release_dev_callback(struct ffs_data *ffs_data) -{ - struct gfs_ffs_obj *ffs_dev; + fi_rndis = usb_get_function_instance("rndis"); + if (IS_ERR(fi_rndis)) { + ret = PTR_ERR(fi_rndis); + goto error; + } + rndis_opts = container_of(fi_rndis, struct f_rndis_opts, + func_inst); +#ifndef CONFIG_USB_FUNCTIONFS_ETH + net = rndis_opts->net; +#endif + } +#endif - ENTER(); - mutex_lock(&gfs_lock); +#if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS + gether_set_qmult(net, qmult); + if (!gether_set_host_addr(net, host_addr)) + pr_info("using host ethernet address: %s", host_addr); + if (!gether_set_dev_addr(net, dev_addr)) + pr_info("using self ethernet address: %s", dev_addr); +#endif - ffs_dev = ffs_data->private_data; - if (ffs_dev) - ffs_dev->mounted = false; +#if defined CONFIG_USB_FUNCTIONFS_RNDIS && defined CONFIG_USB_FUNCTIONFS_ETH + gether_set_gadget(net, cdev->gadget); + ret = gether_register_netdev(net); + if (ret) + goto error_rndis; - mutex_unlock(&gfs_lock); -} + if (can_support_ecm(cdev->gadget)) { + struct f_ecm_opts *ecm_opts; -/* - * It is assumed that gfs_bind is called from a context where gfs_lock is held - */ -static int gfs_bind(struct usb_composite_dev *cdev) -{ - int ret, i; + ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst); + ecm_opts->bound = true; + } else { + struct f_gether_opts *geth_opts; - ENTER(); + geth_opts = container_of(fi_geth, struct f_gether_opts, + func_inst); + geth_opts->bound = true; + } - if (missing_funcs) - return -ENODEV; -#if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS - the_dev = gether_setup(cdev->gadget, dev_addr, host_addr, gfs_host_mac, - qmult); + rndis_borrow_net(fi_rndis, net); #endif - if (IS_ERR(the_dev)) { - ret = PTR_ERR(the_dev); - goto error_quick; - } - gfs_ether_setup = true; + /* TODO: gstrings_attach? */ ret = usb_string_ids_tab(cdev, gfs_strings); if (unlikely(ret < 0)) - goto error; + goto error_rndis; gfs_dev_desc.iProduct = gfs_strings[USB_GADGET_PRODUCT_IDX].id; - for (i = func_num; i--; ) { - ret = functionfs_bind(ffs_tab[i].ffs_data, cdev); - if (unlikely(ret < 0)) { - while (++i < func_num) - functionfs_unbind(ffs_tab[i].ffs_data); - goto error; - } - } - for (i = 0; i < ARRAY_SIZE(gfs_configurations); ++i) { struct gfs_configuration *c = gfs_configurations + i; int sid = USB_GADGET_FIRST_AVAIL_IDX + i; @@ -389,6 +417,8 @@ static int gfs_bind(struct usb_composite_dev *cdev) c->c.bConfigurationValue = 1 + i; c->c.bmAttributes = USB_CONFIG_ATT_SELFPOWER; + c->num = i; + ret = usb_add_config(cdev, &c->c, gfs_do_config); if (unlikely(ret < 0)) goto error_unbind; @@ -396,18 +426,24 @@ static int gfs_bind(struct usb_composite_dev *cdev) usb_composite_overwrite_options(cdev, &coverwrite); return 0; +/* TODO */ error_unbind: - for (i = 0; i < func_num; i++) - functionfs_unbind(ffs_tab[i].ffs_data); +error_rndis: +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + usb_put_function_instance(fi_rndis); error: - gether_cleanup(the_dev); -error_quick: - gfs_ether_setup = false; +#endif +#if defined CONFIG_USB_FUNCTIONFS_ETH + if (can_support_ecm(cdev->gadget)) + usb_put_function_instance(fi_ecm); + else + usb_put_function_instance(fi_geth); +#endif return ret; } /* - * It is assumed that gfs_unbind is called from a context where gfs_lock is held + * It is assumed that gfs_unbind is called from a context where ffs_lock is held */ static int gfs_unbind(struct usb_composite_dev *cdev) { @@ -415,28 +451,30 @@ static int gfs_unbind(struct usb_composite_dev *cdev) ENTER(); - /* - * We may have been called in an error recovery from - * composite_bind() after gfs_unbind() failure so we need to - * check if gfs_ffs_data is not NULL since gfs_bind() handles - * all error recovery itself. I'd rather we werent called - * from composite on orror recovery, but what you're gonna - * do...? - */ - if (gfs_ether_setup) - gether_cleanup(the_dev); - gfs_ether_setup = false; - for (i = func_num; i--; ) - if (ffs_tab[i].ffs_data) - functionfs_unbind(ffs_tab[i].ffs_data); +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + usb_put_function(f_rndis); + usb_put_function_instance(fi_rndis); +#endif + +#if defined CONFIG_USB_FUNCTIONFS_ETH + if (can_support_ecm(cdev->gadget)) { + usb_put_function(f_ecm); + usb_put_function_instance(fi_ecm); + } else { + usb_put_function(f_geth); + usb_put_function_instance(fi_geth); + } +#endif + for (i = 0; i < N_CONF * func_num; ++i) + usb_put_function(*(f_ffs[0] + i)); return 0; } /* * It is assumed that gfs_do_config is called from a context where - * gfs_lock is held + * ffs_lock is held */ static int gfs_do_config(struct usb_configuration *c) { @@ -454,15 +492,22 @@ static int gfs_do_config(struct usb_configuration *c) } if (gc->eth) { - ret = gc->eth(c, gfs_host_mac, the_dev); + ret = gc->eth(c); if (unlikely(ret < 0)) return ret; } for (i = 0; i < func_num; i++) { - ret = functionfs_bind_config(c->cdev, c, ffs_tab[i].ffs_data); - if (unlikely(ret < 0)) - return ret; + f_ffs[gc->num][i] = usb_get_function(fi_ffs[i]); + if (IS_ERR(f_ffs[gc->num][i])) { + ret = PTR_ERR(f_ffs[gc->num][i]); + goto error; + } + ret = usb_add_function(c, f_ffs[gc->num][i]); + if (ret < 0) { + usb_put_function(f_ffs[gc->num][i]); + goto error; + } } /* @@ -479,16 +524,59 @@ static int gfs_do_config(struct usb_configuration *c) c->interface[c->next_interface_id] = NULL; return 0; +error: + while (--i >= 0) { + if (!IS_ERR(f_ffs[gc->num][i])) + usb_remove_function(c, f_ffs[gc->num][i]); + usb_put_function(f_ffs[gc->num][i]); + } + return ret; } #ifdef CONFIG_USB_FUNCTIONFS_ETH -static int eth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], - struct eth_dev *dev) +static int eth_bind_config(struct usb_configuration *c) +{ + int status = 0; + + if (can_support_ecm(c->cdev->gadget)) { + f_ecm = usb_get_function(fi_ecm); + if (IS_ERR(f_ecm)) + return PTR_ERR(f_ecm); + + status = usb_add_function(c, f_ecm); + if (status < 0) + usb_put_function(f_ecm); + + } else { + f_geth = usb_get_function(fi_geth); + if (IS_ERR(f_geth)) + return PTR_ERR(f_geth); + + status = usb_add_function(c, f_geth); + if (status < 0) + usb_put_function(f_geth); + } + return status; +} + +#endif + +#ifdef CONFIG_USB_FUNCTIONFS_RNDIS + +static int bind_rndis_config(struct usb_configuration *c) { - return can_support_ecm(c->cdev->gadget) - ? ecm_bind_config(c, ethaddr, dev) - : geth_bind_config(c, ethaddr, dev); + int status = 0; + + f_rndis = usb_get_function(fi_rndis); + if (IS_ERR(f_rndis)) + return PTR_ERR(f_rndis); + + status = usb_add_function(c, f_rndis); + if (status < 0) + usb_put_function(f_rndis); + + return status; } #endif diff --git a/drivers/usb/gadget/g_zero.h b/drivers/usb/gadget/g_zero.h index ef3e8515272..15f180904f8 100644 --- a/drivers/usb/gadget/g_zero.h +++ b/drivers/usb/gadget/g_zero.h @@ -6,6 +6,11 @@ #ifndef __G_ZERO_H #define __G_ZERO_H +#define GZERO_BULK_BUFLEN 4096 +#define GZERO_QLEN 32 +#define GZERO_ISOC_INTERVAL 4 +#define GZERO_ISOC_MAXPACKET 1024 + struct usb_zero_options { unsigned pattern; unsigned isoc_interval; @@ -24,19 +29,36 @@ struct f_ss_opts { unsigned isoc_mult; unsigned isoc_maxburst; unsigned bulk_buflen; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; }; struct f_lb_opts { struct usb_function_instance func_inst; unsigned bulk_buflen; unsigned qlen; + + /* + * Read/write access to configfs attributes is handled by configfs. + * + * This is to protect the data from concurrent access by read/write + * and create symlink/remove symlink. + */ + struct mutex lock; + int refcnt; }; void lb_modexit(void); int lb_modinit(void); /* common utilities */ -struct usb_request *alloc_ep_req(struct usb_ep *ep, int len); void free_ep_req(struct usb_ep *ep, struct usb_request *req); void disable_endpoints(struct usb_composite_dev *cdev, struct usb_ep *in, struct usb_ep *out, diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c index f8276801571..f66f3a7a35e 100644 --- a/drivers/usb/gadget/goku_udc.c +++ b/drivers/usb/gadget/goku_udc.c @@ -231,7 +231,7 @@ static void ep_reset(struct goku_udc_regs __iomem *regs, struct goku_ep *ep) } } - ep->ep.maxpacket = MAX_FIFO_SIZE; + usb_ep_set_maxpacket_limit(&ep->ep, MAX_FIFO_SIZE); ep->ep.desc = NULL; ep->stopped = 1; ep->irqs = 0; @@ -1251,7 +1251,7 @@ static void udc_reinit (struct goku_udc *dev) } dev->ep[0].reg_mode = NULL; - dev->ep[0].ep.maxpacket = MAX_EP0_SIZE; + usb_ep_set_maxpacket_limit(&dev->ep[0].ep, MAX_EP0_SIZE); list_del_init (&dev->ep[0].ep.ep_list); } @@ -1350,16 +1350,12 @@ static int goku_udc_start(struct usb_gadget *g, return 0; } -static void -stop_activity(struct goku_udc *dev, struct usb_gadget_driver *driver) +static void stop_activity(struct goku_udc *dev) { unsigned i; DBG (dev, "%s\n", __func__); - if (dev->gadget.speed == USB_SPEED_UNKNOWN) - driver = NULL; - /* disconnect gadget driver after quiesceing hw and the driver */ udc_reset (dev); for (i = 0; i < 4; i++) @@ -1377,7 +1373,7 @@ static int goku_udc_stop(struct usb_gadget *g, spin_lock_irqsave(&dev->lock, flags); dev->driver = NULL; - stop_activity(dev, driver); + stop_activity(dev); spin_unlock_irqrestore(&dev->lock, flags); return 0; @@ -1521,7 +1517,7 @@ rescan: if (unlikely(stat & INT_DEVWIDE)) { if (stat & INT_SYSERROR) { ERROR(dev, "system error\n"); - stop_activity(dev, dev->driver); + stop_activity(dev); stat = 0; handled = 1; // FIXME have a neater way to prevent re-enumeration @@ -1536,7 +1532,7 @@ rescan: } else { DBG(dev, "disconnect\n"); if (dev->gadget.speed == USB_SPEED_FULL) - stop_activity(dev, dev->driver); + stop_activity(dev); dev->ep0state = EP0_DISCONNECT; dev->int_enable = INT_DEVWIDE; writel(dev->int_enable, &dev->regs->int_enable); diff --git a/drivers/usb/gadget/gr_udc.c b/drivers/usb/gadget/gr_udc.c new file mode 100644 index 00000000000..5f9c65959dd --- /dev/null +++ b/drivers/usb/gadget/gr_udc.c @@ -0,0 +1,2242 @@ +/* + * USB Peripheral Controller driver for Aeroflex Gaisler GRUSBDC. + * + * 2013 (c) Aeroflex Gaisler AB + * + * This driver supports GRUSBDC USB Device Controller cores available in the + * GRLIB VHDL IP core library. + * + * Full documentation of the GRUSBDC core can be found here: + * http://www.gaisler.com/products/grlib/grip.pdf + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * Contributors: + * - Andreas Larsson <andreas@gaisler.com> + * - Marko Isomaki + */ + +/* + * A GRUSBDC core can have up to 16 IN endpoints and 16 OUT endpoints each + * individually configurable to any of the four USB transfer types. This driver + * only supports cores in DMA mode. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/list.h> +#include <linux/interrupt.h> +#include <linux/device.h> +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> +#include <linux/dma-mapping.h> +#include <linux/dmapool.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/of_platform.h> +#include <linux/of_irq.h> +#include <linux/of_address.h> + +#include <asm/byteorder.h> + +#include "gr_udc.h" + +#define DRIVER_NAME "gr_udc" +#define DRIVER_DESC "Aeroflex Gaisler GRUSBDC USB Peripheral Controller" + +static const char driver_name[] = DRIVER_NAME; +static const char driver_desc[] = DRIVER_DESC; + +#define gr_read32(x) (ioread32be((x))) +#define gr_write32(x, v) (iowrite32be((v), (x))) + +/* USB speed and corresponding string calculated from status register value */ +#define GR_SPEED(status) \ + ((status & GR_STATUS_SP) ? USB_SPEED_FULL : USB_SPEED_HIGH) +#define GR_SPEED_STR(status) usb_speed_string(GR_SPEED(status)) + +/* Size of hardware buffer calculated from epctrl register value */ +#define GR_BUFFER_SIZE(epctrl) \ + ((((epctrl) & GR_EPCTRL_BUFSZ_MASK) >> GR_EPCTRL_BUFSZ_POS) * \ + GR_EPCTRL_BUFSZ_SCALER) + +/* ---------------------------------------------------------------------- */ +/* Debug printout functionality */ + +static const char * const gr_modestring[] = {"control", "iso", "bulk", "int"}; + +static const char *gr_ep0state_string(enum gr_ep0state state) +{ + static const char *const names[] = { + [GR_EP0_DISCONNECT] = "disconnect", + [GR_EP0_SETUP] = "setup", + [GR_EP0_IDATA] = "idata", + [GR_EP0_ODATA] = "odata", + [GR_EP0_ISTATUS] = "istatus", + [GR_EP0_OSTATUS] = "ostatus", + [GR_EP0_STALL] = "stall", + [GR_EP0_SUSPEND] = "suspend", + }; + + if (state < 0 || state >= ARRAY_SIZE(names)) + return "UNKNOWN"; + + return names[state]; +} + +#ifdef VERBOSE_DEBUG + +static void gr_dbgprint_request(const char *str, struct gr_ep *ep, + struct gr_request *req) +{ + int buflen = ep->is_in ? req->req.length : req->req.actual; + int rowlen = 32; + int plen = min(rowlen, buflen); + + dev_dbg(ep->dev->dev, "%s: 0x%p, %d bytes data%s:\n", str, req, buflen, + (buflen > plen ? " (truncated)" : "")); + print_hex_dump_debug(" ", DUMP_PREFIX_NONE, + rowlen, 4, req->req.buf, plen, false); +} + +static void gr_dbgprint_devreq(struct gr_udc *dev, u8 type, u8 request, + u16 value, u16 index, u16 length) +{ + dev_vdbg(dev->dev, "REQ: %02x.%02x v%04x i%04x l%04x\n", + type, request, value, index, length); +} +#else /* !VERBOSE_DEBUG */ + +static void gr_dbgprint_request(const char *str, struct gr_ep *ep, + struct gr_request *req) {} + +static void gr_dbgprint_devreq(struct gr_udc *dev, u8 type, u8 request, + u16 value, u16 index, u16 length) {} + +#endif /* VERBOSE_DEBUG */ + +/* ---------------------------------------------------------------------- */ +/* Debugfs functionality */ + +#ifdef CONFIG_USB_GADGET_DEBUG_FS + +static void gr_seq_ep_show(struct seq_file *seq, struct gr_ep *ep) +{ + u32 epctrl = gr_read32(&ep->regs->epctrl); + u32 epstat = gr_read32(&ep->regs->epstat); + int mode = (epctrl & GR_EPCTRL_TT_MASK) >> GR_EPCTRL_TT_POS; + struct gr_request *req; + + seq_printf(seq, "%s:\n", ep->ep.name); + seq_printf(seq, " mode = %s\n", gr_modestring[mode]); + seq_printf(seq, " halted: %d\n", !!(epctrl & GR_EPCTRL_EH)); + seq_printf(seq, " disabled: %d\n", !!(epctrl & GR_EPCTRL_ED)); + seq_printf(seq, " valid: %d\n", !!(epctrl & GR_EPCTRL_EV)); + seq_printf(seq, " dma_start = %d\n", ep->dma_start); + seq_printf(seq, " stopped = %d\n", ep->stopped); + seq_printf(seq, " wedged = %d\n", ep->wedged); + seq_printf(seq, " callback = %d\n", ep->callback); + seq_printf(seq, " maxpacket = %d\n", ep->ep.maxpacket); + seq_printf(seq, " bytes_per_buffer = %d\n", ep->bytes_per_buffer); + if (mode == 1 || mode == 3) + seq_printf(seq, " nt = %d\n", + (epctrl & GR_EPCTRL_NT_MASK) >> GR_EPCTRL_NT_POS); + + seq_printf(seq, " Buffer 0: %s %s%d\n", + epstat & GR_EPSTAT_B0 ? "valid" : "invalid", + epstat & GR_EPSTAT_BS ? " " : "selected ", + (epstat & GR_EPSTAT_B0CNT_MASK) >> GR_EPSTAT_B0CNT_POS); + seq_printf(seq, " Buffer 1: %s %s%d\n", + epstat & GR_EPSTAT_B1 ? "valid" : "invalid", + epstat & GR_EPSTAT_BS ? "selected " : " ", + (epstat & GR_EPSTAT_B1CNT_MASK) >> GR_EPSTAT_B1CNT_POS); + + if (list_empty(&ep->queue)) { + seq_puts(seq, " Queue: empty\n\n"); + return; + } + + seq_puts(seq, " Queue:\n"); + list_for_each_entry(req, &ep->queue, queue) { + struct gr_dma_desc *desc; + struct gr_dma_desc *next; + + seq_printf(seq, " 0x%p: 0x%p %d %d\n", req, + &req->req.buf, req->req.actual, req->req.length); + + next = req->first_desc; + do { + desc = next; + next = desc->next_desc; + seq_printf(seq, " %c 0x%p (0x%08x): 0x%05x 0x%08x\n", + desc == req->curr_desc ? 'c' : ' ', + desc, desc->paddr, desc->ctrl, desc->data); + } while (desc != req->last_desc); + } + seq_puts(seq, "\n"); +} + + +static int gr_seq_show(struct seq_file *seq, void *v) +{ + struct gr_udc *dev = seq->private; + u32 control = gr_read32(&dev->regs->control); + u32 status = gr_read32(&dev->regs->status); + struct gr_ep *ep; + + seq_printf(seq, "usb state = %s\n", + usb_state_string(dev->gadget.state)); + seq_printf(seq, "address = %d\n", + (control & GR_CONTROL_UA_MASK) >> GR_CONTROL_UA_POS); + seq_printf(seq, "speed = %s\n", GR_SPEED_STR(status)); + seq_printf(seq, "ep0state = %s\n", gr_ep0state_string(dev->ep0state)); + seq_printf(seq, "irq_enabled = %d\n", dev->irq_enabled); + seq_printf(seq, "remote_wakeup = %d\n", dev->remote_wakeup); + seq_printf(seq, "test_mode = %d\n", dev->test_mode); + seq_puts(seq, "\n"); + + list_for_each_entry(ep, &dev->ep_list, ep_list) + gr_seq_ep_show(seq, ep); + + return 0; +} + +static int gr_dfs_open(struct inode *inode, struct file *file) +{ + return single_open(file, gr_seq_show, inode->i_private); +} + +static const struct file_operations gr_dfs_fops = { + .owner = THIS_MODULE, + .open = gr_dfs_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static void gr_dfs_create(struct gr_udc *dev) +{ + const char *name = "gr_udc_state"; + + dev->dfs_root = debugfs_create_dir(dev_name(dev->dev), NULL); + if (IS_ERR(dev->dfs_root)) { + dev_err(dev->dev, "Failed to create debugfs directory\n"); + return; + } + dev->dfs_state = debugfs_create_file(name, 0444, dev->dfs_root, + dev, &gr_dfs_fops); + if (IS_ERR(dev->dfs_state)) + dev_err(dev->dev, "Failed to create debugfs file %s\n", name); +} + +static void gr_dfs_delete(struct gr_udc *dev) +{ + /* Handles NULL and ERR pointers internally */ + debugfs_remove(dev->dfs_state); + debugfs_remove(dev->dfs_root); +} + +#else /* !CONFIG_USB_GADGET_DEBUG_FS */ + +static void gr_dfs_create(struct gr_udc *dev) {} +static void gr_dfs_delete(struct gr_udc *dev) {} + +#endif /* CONFIG_USB_GADGET_DEBUG_FS */ + +/* ---------------------------------------------------------------------- */ +/* DMA and request handling */ + +/* Allocates a new struct gr_dma_desc, sets paddr and zeroes the rest */ +static struct gr_dma_desc *gr_alloc_dma_desc(struct gr_ep *ep, gfp_t gfp_flags) +{ + dma_addr_t paddr; + struct gr_dma_desc *dma_desc; + + dma_desc = dma_pool_alloc(ep->dev->desc_pool, gfp_flags, &paddr); + if (!dma_desc) { + dev_err(ep->dev->dev, "Could not allocate from DMA pool\n"); + return NULL; + } + + memset(dma_desc, 0, sizeof(*dma_desc)); + dma_desc->paddr = paddr; + + return dma_desc; +} + +static inline void gr_free_dma_desc(struct gr_udc *dev, + struct gr_dma_desc *desc) +{ + dma_pool_free(dev->desc_pool, desc, (dma_addr_t)desc->paddr); +} + +/* Frees the chain of struct gr_dma_desc for the given request */ +static void gr_free_dma_desc_chain(struct gr_udc *dev, struct gr_request *req) +{ + struct gr_dma_desc *desc; + struct gr_dma_desc *next; + + next = req->first_desc; + if (!next) + return; + + do { + desc = next; + next = desc->next_desc; + gr_free_dma_desc(dev, desc); + } while (desc != req->last_desc); + + req->first_desc = NULL; + req->curr_desc = NULL; + req->last_desc = NULL; +} + +static void gr_ep0_setup(struct gr_udc *dev, struct gr_request *req); + +/* + * Frees allocated resources and calls the appropriate completion function/setup + * package handler for a finished request. + * + * Must be called with dev->lock held and irqs disabled. + */ +static void gr_finish_request(struct gr_ep *ep, struct gr_request *req, + int status) + __releases(&dev->lock) + __acquires(&dev->lock) +{ + struct gr_udc *dev; + + list_del_init(&req->queue); + + if (likely(req->req.status == -EINPROGRESS)) + req->req.status = status; + else + status = req->req.status; + + dev = ep->dev; + usb_gadget_unmap_request(&dev->gadget, &req->req, ep->is_in); + gr_free_dma_desc_chain(dev, req); + + if (ep->is_in) /* For OUT, actual gets updated bit by bit */ + req->req.actual = req->req.length; + + if (!status) { + if (ep->is_in) + gr_dbgprint_request("SENT", ep, req); + else + gr_dbgprint_request("RECV", ep, req); + } + + /* Prevent changes to ep->queue during callback */ + ep->callback = 1; + if (req == dev->ep0reqo && !status) { + if (req->setup) + gr_ep0_setup(dev, req); + else + dev_err(dev->dev, + "Unexpected non setup packet on ep0in\n"); + } else if (req->req.complete) { + spin_unlock(&dev->lock); + + req->req.complete(&ep->ep, &req->req); + + spin_lock(&dev->lock); + } + ep->callback = 0; +} + +static struct usb_request *gr_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) +{ + struct gr_request *req; + + req = kzalloc(sizeof(*req), gfp_flags); + if (!req) + return NULL; + + INIT_LIST_HEAD(&req->queue); + + return &req->req; +} + +/* + * Starts DMA for endpoint ep if there are requests in the queue. + * + * Must be called with dev->lock held and with !ep->stopped. + */ +static void gr_start_dma(struct gr_ep *ep) +{ + struct gr_request *req; + u32 dmactrl; + + if (list_empty(&ep->queue)) { + ep->dma_start = 0; + return; + } + + req = list_first_entry(&ep->queue, struct gr_request, queue); + + /* A descriptor should already have been allocated */ + BUG_ON(!req->curr_desc); + + wmb(); /* Make sure all is settled before handing it over to DMA */ + + /* Set the descriptor pointer in the hardware */ + gr_write32(&ep->regs->dmaaddr, req->curr_desc->paddr); + + /* Announce available descriptors */ + dmactrl = gr_read32(&ep->regs->dmactrl); + gr_write32(&ep->regs->dmactrl, dmactrl | GR_DMACTRL_DA); + + ep->dma_start = 1; +} + +/* + * Finishes the first request in the ep's queue and, if available, starts the + * next request in queue. + * + * Must be called with dev->lock held, irqs disabled and with !ep->stopped. + */ +static void gr_dma_advance(struct gr_ep *ep, int status) +{ + struct gr_request *req; + + req = list_first_entry(&ep->queue, struct gr_request, queue); + gr_finish_request(ep, req, status); + gr_start_dma(ep); /* Regardless of ep->dma_start */ +} + +/* + * Abort DMA for an endpoint. Sets the abort DMA bit which causes an ongoing DMA + * transfer to be canceled and clears GR_DMACTRL_DA. + * + * Must be called with dev->lock held. + */ +static void gr_abort_dma(struct gr_ep *ep) +{ + u32 dmactrl; + + dmactrl = gr_read32(&ep->regs->dmactrl); + gr_write32(&ep->regs->dmactrl, dmactrl | GR_DMACTRL_AD); +} + +/* + * Allocates and sets up a struct gr_dma_desc and putting it on the descriptor + * chain. + * + * Size is not used for OUT endpoints. Hardware can not be instructed to handle + * smaller buffer than MAXPL in the OUT direction. + */ +static int gr_add_dma_desc(struct gr_ep *ep, struct gr_request *req, + dma_addr_t data, unsigned size, gfp_t gfp_flags) +{ + struct gr_dma_desc *desc; + + desc = gr_alloc_dma_desc(ep, gfp_flags); + if (!desc) + return -ENOMEM; + + desc->data = data; + if (ep->is_in) + desc->ctrl = + (GR_DESC_IN_CTRL_LEN_MASK & size) | GR_DESC_IN_CTRL_EN; + else + desc->ctrl = GR_DESC_OUT_CTRL_IE; + + if (!req->first_desc) { + req->first_desc = desc; + req->curr_desc = desc; + } else { + req->last_desc->next_desc = desc; + req->last_desc->next = desc->paddr; + req->last_desc->ctrl |= GR_DESC_OUT_CTRL_NX; + } + req->last_desc = desc; + + return 0; +} + +/* + * Sets up a chain of struct gr_dma_descriptors pointing to buffers that + * together covers req->req.length bytes of the buffer at DMA address + * req->req.dma for the OUT direction. + * + * The first descriptor in the chain is enabled, the rest disabled. The + * interrupt handler will later enable them one by one when needed so we can + * find out when the transfer is finished. For OUT endpoints, all descriptors + * therefore generate interrutps. + */ +static int gr_setup_out_desc_list(struct gr_ep *ep, struct gr_request *req, + gfp_t gfp_flags) +{ + u16 bytes_left; /* Bytes left to provide descriptors for */ + u16 bytes_used; /* Bytes accommodated for */ + int ret = 0; + + req->first_desc = NULL; /* Signals that no allocation is done yet */ + bytes_left = req->req.length; + bytes_used = 0; + while (bytes_left > 0) { + dma_addr_t start = req->req.dma + bytes_used; + u16 size = min(bytes_left, ep->bytes_per_buffer); + + /* Should not happen however - gr_queue stops such lengths */ + if (size < ep->bytes_per_buffer) + dev_warn(ep->dev->dev, + "Buffer overrun risk: %u < %u bytes/buffer\n", + size, ep->bytes_per_buffer); + + ret = gr_add_dma_desc(ep, req, start, size, gfp_flags); + if (ret) + goto alloc_err; + + bytes_left -= size; + bytes_used += size; + } + + req->first_desc->ctrl |= GR_DESC_OUT_CTRL_EN; + + return 0; + +alloc_err: + gr_free_dma_desc_chain(ep->dev, req); + + return ret; +} + +/* + * Sets up a chain of struct gr_dma_descriptors pointing to buffers that + * together covers req->req.length bytes of the buffer at DMA address + * req->req.dma for the IN direction. + * + * When more data is provided than the maximum payload size, the hardware splits + * this up into several payloads automatically. Moreover, ep->bytes_per_buffer + * is always set to a multiple of the maximum payload (restricted to the valid + * number of maximum payloads during high bandwidth isochronous or interrupt + * transfers) + * + * All descriptors are enabled from the beginning and we only generate an + * interrupt for the last one indicating that the entire request has been pushed + * to hardware. + */ +static int gr_setup_in_desc_list(struct gr_ep *ep, struct gr_request *req, + gfp_t gfp_flags) +{ + u16 bytes_left; /* Bytes left in req to provide descriptors for */ + u16 bytes_used; /* Bytes in req accommodated for */ + int ret = 0; + + req->first_desc = NULL; /* Signals that no allocation is done yet */ + bytes_left = req->req.length; + bytes_used = 0; + do { /* Allow for zero length packets */ + dma_addr_t start = req->req.dma + bytes_used; + u16 size = min(bytes_left, ep->bytes_per_buffer); + + ret = gr_add_dma_desc(ep, req, start, size, gfp_flags); + if (ret) + goto alloc_err; + + bytes_left -= size; + bytes_used += size; + } while (bytes_left > 0); + + /* + * Send an extra zero length packet to indicate that no more data is + * available when req->req.zero is set and the data length is even + * multiples of ep->ep.maxpacket. + */ + if (req->req.zero && (req->req.length % ep->ep.maxpacket == 0)) { + ret = gr_add_dma_desc(ep, req, 0, 0, gfp_flags); + if (ret) + goto alloc_err; + } + + /* + * For IN packets we only want to know when the last packet has been + * transmitted (not just put into internal buffers). + */ + req->last_desc->ctrl |= GR_DESC_IN_CTRL_PI; + + return 0; + +alloc_err: + gr_free_dma_desc_chain(ep->dev, req); + + return ret; +} + +/* Must be called with dev->lock held */ +static int gr_queue(struct gr_ep *ep, struct gr_request *req, gfp_t gfp_flags) +{ + struct gr_udc *dev = ep->dev; + int ret; + + if (unlikely(!ep->ep.desc && ep->num != 0)) { + dev_err(dev->dev, "No ep descriptor for %s\n", ep->ep.name); + return -EINVAL; + } + + if (unlikely(!req->req.buf || !list_empty(&req->queue))) { + dev_err(dev->dev, + "Invalid request for %s: buf=%p list_empty=%d\n", + ep->ep.name, req->req.buf, list_empty(&req->queue)); + return -EINVAL; + } + + /* + * The DMA controller can not handle smaller OUT buffers than + * maxpacket. It could lead to buffer overruns if unexpectedly long + * packet are received. + */ + if (!ep->is_in && (req->req.length % ep->ep.maxpacket) != 0) { + dev_err(dev->dev, + "OUT request length %d is not multiple of maxpacket\n", + req->req.length); + return -EMSGSIZE; + } + + if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) { + dev_err(dev->dev, "-ESHUTDOWN"); + return -ESHUTDOWN; + } + + /* Can't touch registers when suspended */ + if (dev->ep0state == GR_EP0_SUSPEND) { + dev_err(dev->dev, "-EBUSY"); + return -EBUSY; + } + + /* Set up DMA mapping in case the caller didn't */ + ret = usb_gadget_map_request(&dev->gadget, &req->req, ep->is_in); + if (ret) { + dev_err(dev->dev, "usb_gadget_map_request"); + return ret; + } + + if (ep->is_in) + ret = gr_setup_in_desc_list(ep, req, gfp_flags); + else + ret = gr_setup_out_desc_list(ep, req, gfp_flags); + if (ret) + return ret; + + req->req.status = -EINPROGRESS; + req->req.actual = 0; + list_add_tail(&req->queue, &ep->queue); + + /* Start DMA if not started, otherwise interrupt handler handles it */ + if (!ep->dma_start && likely(!ep->stopped)) + gr_start_dma(ep); + + return 0; +} + +/* + * Queue a request from within the driver. + * + * Must be called with dev->lock held. + */ +static inline int gr_queue_int(struct gr_ep *ep, struct gr_request *req, + gfp_t gfp_flags) +{ + if (ep->is_in) + gr_dbgprint_request("RESP", ep, req); + + return gr_queue(ep, req, gfp_flags); +} + +/* ---------------------------------------------------------------------- */ +/* General helper functions */ + +/* + * Dequeue ALL requests. + * + * Must be called with dev->lock held and irqs disabled. + */ +static void gr_ep_nuke(struct gr_ep *ep) +{ + struct gr_request *req; + struct gr_udc *dev; + + dev = ep->dev; + + ep->stopped = 1; + ep->dma_start = 0; + gr_abort_dma(ep); + + while (!list_empty(&ep->queue)) { + req = list_first_entry(&ep->queue, struct gr_request, queue); + gr_finish_request(ep, req, -ESHUTDOWN); + } +} + +/* + * Reset the hardware state of this endpoint. + * + * Must be called with dev->lock held. + */ +static void gr_ep_reset(struct gr_ep *ep) +{ + gr_write32(&ep->regs->epctrl, 0); + gr_write32(&ep->regs->dmactrl, 0); + + ep->ep.maxpacket = MAX_CTRL_PL_SIZE; + ep->ep.desc = NULL; + ep->stopped = 1; + ep->dma_start = 0; +} + +/* + * Generate STALL on ep0in/out. + * + * Must be called with dev->lock held. + */ +static void gr_control_stall(struct gr_udc *dev) +{ + u32 epctrl; + + epctrl = gr_read32(&dev->epo[0].regs->epctrl); + gr_write32(&dev->epo[0].regs->epctrl, epctrl | GR_EPCTRL_CS); + epctrl = gr_read32(&dev->epi[0].regs->epctrl); + gr_write32(&dev->epi[0].regs->epctrl, epctrl | GR_EPCTRL_CS); + + dev->ep0state = GR_EP0_STALL; +} + +/* + * Halts, halts and wedges, or clears halt for an endpoint. + * + * Must be called with dev->lock held. + */ +static int gr_ep_halt_wedge(struct gr_ep *ep, int halt, int wedge, int fromhost) +{ + u32 epctrl; + int retval = 0; + + if (ep->num && !ep->ep.desc) + return -EINVAL; + + if (ep->num && ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) + return -EOPNOTSUPP; + + /* Never actually halt ep0, and therefore never clear halt for ep0 */ + if (!ep->num) { + if (halt && !fromhost) { + /* ep0 halt from gadget - generate protocol stall */ + gr_control_stall(ep->dev); + dev_dbg(ep->dev->dev, "EP: stall ep0\n"); + return 0; + } + return -EINVAL; + } + + dev_dbg(ep->dev->dev, "EP: %s halt %s\n", + (halt ? (wedge ? "wedge" : "set") : "clear"), ep->ep.name); + + epctrl = gr_read32(&ep->regs->epctrl); + if (halt) { + /* Set HALT */ + gr_write32(&ep->regs->epctrl, epctrl | GR_EPCTRL_EH); + ep->stopped = 1; + if (wedge) + ep->wedged = 1; + } else { + gr_write32(&ep->regs->epctrl, epctrl & ~GR_EPCTRL_EH); + ep->stopped = 0; + ep->wedged = 0; + + /* Things might have been queued up in the meantime */ + if (!ep->dma_start) + gr_start_dma(ep); + } + + return retval; +} + +/* Must be called with dev->lock held */ +static inline void gr_set_ep0state(struct gr_udc *dev, enum gr_ep0state value) +{ + if (dev->ep0state != value) + dev_vdbg(dev->dev, "STATE: ep0state=%s\n", + gr_ep0state_string(value)); + dev->ep0state = value; +} + +/* + * Should only be called when endpoints can not generate interrupts. + * + * Must be called with dev->lock held. + */ +static void gr_disable_interrupts_and_pullup(struct gr_udc *dev) +{ + gr_write32(&dev->regs->control, 0); + wmb(); /* Make sure that we do not deny one of our interrupts */ + dev->irq_enabled = 0; +} + +/* + * Stop all device activity and disable data line pullup. + * + * Must be called with dev->lock held and irqs disabled. + */ +static void gr_stop_activity(struct gr_udc *dev) +{ + struct gr_ep *ep; + + list_for_each_entry(ep, &dev->ep_list, ep_list) + gr_ep_nuke(ep); + + gr_disable_interrupts_and_pullup(dev); + + gr_set_ep0state(dev, GR_EP0_DISCONNECT); + usb_gadget_set_state(&dev->gadget, USB_STATE_NOTATTACHED); +} + +/* ---------------------------------------------------------------------- */ +/* ep0 setup packet handling */ + +static void gr_ep0_testmode_complete(struct usb_ep *_ep, + struct usb_request *_req) +{ + struct gr_ep *ep; + struct gr_udc *dev; + u32 control; + + ep = container_of(_ep, struct gr_ep, ep); + dev = ep->dev; + + spin_lock(&dev->lock); + + control = gr_read32(&dev->regs->control); + control |= GR_CONTROL_TM | (dev->test_mode << GR_CONTROL_TS_POS); + gr_write32(&dev->regs->control, control); + + spin_unlock(&dev->lock); +} + +static void gr_ep0_dummy_complete(struct usb_ep *_ep, struct usb_request *_req) +{ + /* Nothing needs to be done here */ +} + +/* + * Queue a response on ep0in. + * + * Must be called with dev->lock held. + */ +static int gr_ep0_respond(struct gr_udc *dev, u8 *buf, int length, + void (*complete)(struct usb_ep *ep, + struct usb_request *req)) +{ + u8 *reqbuf = dev->ep0reqi->req.buf; + int status; + int i; + + for (i = 0; i < length; i++) + reqbuf[i] = buf[i]; + dev->ep0reqi->req.length = length; + dev->ep0reqi->req.complete = complete; + + status = gr_queue_int(&dev->epi[0], dev->ep0reqi, GFP_ATOMIC); + if (status < 0) + dev_err(dev->dev, + "Could not queue ep0in setup response: %d\n", status); + + return status; +} + +/* + * Queue a 2 byte response on ep0in. + * + * Must be called with dev->lock held. + */ +static inline int gr_ep0_respond_u16(struct gr_udc *dev, u16 response) +{ + __le16 le_response = cpu_to_le16(response); + + return gr_ep0_respond(dev, (u8 *)&le_response, 2, + gr_ep0_dummy_complete); +} + +/* + * Queue a ZLP response on ep0in. + * + * Must be called with dev->lock held. + */ +static inline int gr_ep0_respond_empty(struct gr_udc *dev) +{ + return gr_ep0_respond(dev, NULL, 0, gr_ep0_dummy_complete); +} + +/* + * This is run when a SET_ADDRESS request is received. First writes + * the new address to the control register which is updated internally + * when the next IN packet is ACKED. + * + * Must be called with dev->lock held. + */ +static void gr_set_address(struct gr_udc *dev, u8 address) +{ + u32 control; + + control = gr_read32(&dev->regs->control) & ~GR_CONTROL_UA_MASK; + control |= (address << GR_CONTROL_UA_POS) & GR_CONTROL_UA_MASK; + control |= GR_CONTROL_SU; + gr_write32(&dev->regs->control, control); +} + +/* + * Returns negative for STALL, 0 for successful handling and positive for + * delegation. + * + * Must be called with dev->lock held. + */ +static int gr_device_request(struct gr_udc *dev, u8 type, u8 request, + u16 value, u16 index) +{ + u16 response; + u8 test; + + switch (request) { + case USB_REQ_SET_ADDRESS: + dev_dbg(dev->dev, "STATUS: address %d\n", value & 0xff); + gr_set_address(dev, value & 0xff); + if (value) + usb_gadget_set_state(&dev->gadget, USB_STATE_ADDRESS); + else + usb_gadget_set_state(&dev->gadget, USB_STATE_DEFAULT); + return gr_ep0_respond_empty(dev); + + case USB_REQ_GET_STATUS: + /* Self powered | remote wakeup */ + response = 0x0001 | (dev->remote_wakeup ? 0x0002 : 0); + return gr_ep0_respond_u16(dev, response); + + case USB_REQ_SET_FEATURE: + switch (value) { + case USB_DEVICE_REMOTE_WAKEUP: + /* Allow remote wakeup */ + dev->remote_wakeup = 1; + return gr_ep0_respond_empty(dev); + + case USB_DEVICE_TEST_MODE: + /* The hardware does not support TEST_FORCE_EN */ + test = index >> 8; + if (test >= TEST_J && test <= TEST_PACKET) { + dev->test_mode = test; + return gr_ep0_respond(dev, NULL, 0, + gr_ep0_testmode_complete); + } + } + break; + + case USB_REQ_CLEAR_FEATURE: + switch (value) { + case USB_DEVICE_REMOTE_WAKEUP: + /* Disallow remote wakeup */ + dev->remote_wakeup = 0; + return gr_ep0_respond_empty(dev); + } + break; + } + + return 1; /* Delegate the rest */ +} + +/* + * Returns negative for STALL, 0 for successful handling and positive for + * delegation. + * + * Must be called with dev->lock held. + */ +static int gr_interface_request(struct gr_udc *dev, u8 type, u8 request, + u16 value, u16 index) +{ + if (dev->gadget.state != USB_STATE_CONFIGURED) + return -1; + + /* + * Should return STALL for invalid interfaces, but udc driver does not + * know anything about that. However, many gadget drivers do not handle + * GET_STATUS so we need to take care of that. + */ + + switch (request) { + case USB_REQ_GET_STATUS: + return gr_ep0_respond_u16(dev, 0x0000); + + case USB_REQ_SET_FEATURE: + case USB_REQ_CLEAR_FEATURE: + /* + * No possible valid standard requests. Still let gadget drivers + * have a go at it. + */ + break; + } + + return 1; /* Delegate the rest */ +} + +/* + * Returns negative for STALL, 0 for successful handling and positive for + * delegation. + * + * Must be called with dev->lock held. + */ +static int gr_endpoint_request(struct gr_udc *dev, u8 type, u8 request, + u16 value, u16 index) +{ + struct gr_ep *ep; + int status; + int halted; + u8 epnum = index & USB_ENDPOINT_NUMBER_MASK; + u8 is_in = index & USB_ENDPOINT_DIR_MASK; + + if ((is_in && epnum >= dev->nepi) || (!is_in && epnum >= dev->nepo)) + return -1; + + if (dev->gadget.state != USB_STATE_CONFIGURED && epnum != 0) + return -1; + + ep = (is_in ? &dev->epi[epnum] : &dev->epo[epnum]); + + switch (request) { + case USB_REQ_GET_STATUS: + halted = gr_read32(&ep->regs->epctrl) & GR_EPCTRL_EH; + return gr_ep0_respond_u16(dev, halted ? 0x0001 : 0); + + case USB_REQ_SET_FEATURE: + switch (value) { + case USB_ENDPOINT_HALT: + status = gr_ep_halt_wedge(ep, 1, 0, 1); + if (status >= 0) + status = gr_ep0_respond_empty(dev); + return status; + } + break; + + case USB_REQ_CLEAR_FEATURE: + switch (value) { + case USB_ENDPOINT_HALT: + if (ep->wedged) + return -1; + status = gr_ep_halt_wedge(ep, 0, 0, 1); + if (status >= 0) + status = gr_ep0_respond_empty(dev); + return status; + } + break; + } + + return 1; /* Delegate the rest */ +} + +/* Must be called with dev->lock held */ +static void gr_ep0out_requeue(struct gr_udc *dev) +{ + int ret = gr_queue_int(&dev->epo[0], dev->ep0reqo, GFP_ATOMIC); + + if (ret) + dev_err(dev->dev, "Could not queue ep0out setup request: %d\n", + ret); +} + +/* + * The main function dealing with setup requests on ep0. + * + * Must be called with dev->lock held and irqs disabled + */ +static void gr_ep0_setup(struct gr_udc *dev, struct gr_request *req) + __releases(&dev->lock) + __acquires(&dev->lock) +{ + union { + struct usb_ctrlrequest ctrl; + u8 raw[8]; + u32 word[2]; + } u; + u8 type; + u8 request; + u16 value; + u16 index; + u16 length; + int i; + int status; + + /* Restore from ep0 halt */ + if (dev->ep0state == GR_EP0_STALL) { + gr_set_ep0state(dev, GR_EP0_SETUP); + if (!req->req.actual) + goto out; + } + + if (dev->ep0state == GR_EP0_ISTATUS) { + gr_set_ep0state(dev, GR_EP0_SETUP); + if (req->req.actual > 0) + dev_dbg(dev->dev, + "Unexpected setup packet at state %s\n", + gr_ep0state_string(GR_EP0_ISTATUS)); + else + goto out; /* Got expected ZLP */ + } else if (dev->ep0state != GR_EP0_SETUP) { + dev_info(dev->dev, + "Unexpected ep0out request at state %s - stalling\n", + gr_ep0state_string(dev->ep0state)); + gr_control_stall(dev); + gr_set_ep0state(dev, GR_EP0_SETUP); + goto out; + } else if (!req->req.actual) { + dev_dbg(dev->dev, "Unexpected ZLP at state %s\n", + gr_ep0state_string(dev->ep0state)); + goto out; + } + + /* Handle SETUP packet */ + for (i = 0; i < req->req.actual; i++) + u.raw[i] = ((u8 *)req->req.buf)[i]; + + type = u.ctrl.bRequestType; + request = u.ctrl.bRequest; + value = le16_to_cpu(u.ctrl.wValue); + index = le16_to_cpu(u.ctrl.wIndex); + length = le16_to_cpu(u.ctrl.wLength); + + gr_dbgprint_devreq(dev, type, request, value, index, length); + + /* Check for data stage */ + if (length) { + if (type & USB_DIR_IN) + gr_set_ep0state(dev, GR_EP0_IDATA); + else + gr_set_ep0state(dev, GR_EP0_ODATA); + } + + status = 1; /* Positive status flags delegation */ + if ((type & USB_TYPE_MASK) == USB_TYPE_STANDARD) { + switch (type & USB_RECIP_MASK) { + case USB_RECIP_DEVICE: + status = gr_device_request(dev, type, request, + value, index); + break; + case USB_RECIP_ENDPOINT: + status = gr_endpoint_request(dev, type, request, + value, index); + break; + case USB_RECIP_INTERFACE: + status = gr_interface_request(dev, type, request, + value, index); + break; + } + } + + if (status > 0) { + spin_unlock(&dev->lock); + + dev_vdbg(dev->dev, "DELEGATE\n"); + status = dev->driver->setup(&dev->gadget, &u.ctrl); + + spin_lock(&dev->lock); + } + + /* Generate STALL on both ep0out and ep0in if requested */ + if (unlikely(status < 0)) { + dev_vdbg(dev->dev, "STALL\n"); + gr_control_stall(dev); + } + + if ((type & USB_TYPE_MASK) == USB_TYPE_STANDARD && + request == USB_REQ_SET_CONFIGURATION) { + if (!value) { + dev_dbg(dev->dev, "STATUS: deconfigured\n"); + usb_gadget_set_state(&dev->gadget, USB_STATE_ADDRESS); + } else if (status >= 0) { + /* Not configured unless gadget OK:s it */ + dev_dbg(dev->dev, "STATUS: configured: %d\n", value); + usb_gadget_set_state(&dev->gadget, + USB_STATE_CONFIGURED); + } + } + + /* Get ready for next stage */ + if (dev->ep0state == GR_EP0_ODATA) + gr_set_ep0state(dev, GR_EP0_OSTATUS); + else if (dev->ep0state == GR_EP0_IDATA) + gr_set_ep0state(dev, GR_EP0_ISTATUS); + else + gr_set_ep0state(dev, GR_EP0_SETUP); + +out: + gr_ep0out_requeue(dev); +} + +/* ---------------------------------------------------------------------- */ +/* VBUS and USB reset handling */ + +/* Must be called with dev->lock held and irqs disabled */ +static void gr_vbus_connected(struct gr_udc *dev, u32 status) +{ + u32 control; + + dev->gadget.speed = GR_SPEED(status); + usb_gadget_set_state(&dev->gadget, USB_STATE_POWERED); + + /* Turn on full interrupts and pullup */ + control = (GR_CONTROL_SI | GR_CONTROL_UI | GR_CONTROL_VI | + GR_CONTROL_SP | GR_CONTROL_EP); + gr_write32(&dev->regs->control, control); +} + +/* Must be called with dev->lock held */ +static void gr_enable_vbus_detect(struct gr_udc *dev) +{ + u32 status; + + dev->irq_enabled = 1; + wmb(); /* Make sure we do not ignore an interrupt */ + gr_write32(&dev->regs->control, GR_CONTROL_VI); + + /* Take care of the case we are already plugged in at this point */ + status = gr_read32(&dev->regs->status); + if (status & GR_STATUS_VB) + gr_vbus_connected(dev, status); +} + +/* Must be called with dev->lock held and irqs disabled */ +static void gr_vbus_disconnected(struct gr_udc *dev) +{ + gr_stop_activity(dev); + + /* Report disconnect */ + if (dev->driver && dev->driver->disconnect) { + spin_unlock(&dev->lock); + + dev->driver->disconnect(&dev->gadget); + + spin_lock(&dev->lock); + } + + gr_enable_vbus_detect(dev); +} + +/* Must be called with dev->lock held and irqs disabled */ +static void gr_udc_usbreset(struct gr_udc *dev, u32 status) +{ + gr_set_address(dev, 0); + gr_set_ep0state(dev, GR_EP0_SETUP); + usb_gadget_set_state(&dev->gadget, USB_STATE_DEFAULT); + dev->gadget.speed = GR_SPEED(status); + + gr_ep_nuke(&dev->epo[0]); + gr_ep_nuke(&dev->epi[0]); + dev->epo[0].stopped = 0; + dev->epi[0].stopped = 0; + gr_ep0out_requeue(dev); +} + +/* ---------------------------------------------------------------------- */ +/* Irq handling */ + +/* + * Handles interrupts from in endpoints. Returns whether something was handled. + * + * Must be called with dev->lock held, irqs disabled and with !ep->stopped. + */ +static int gr_handle_in_ep(struct gr_ep *ep) +{ + struct gr_request *req; + + req = list_first_entry(&ep->queue, struct gr_request, queue); + if (!req->last_desc) + return 0; + + if (ACCESS_ONCE(req->last_desc->ctrl) & GR_DESC_IN_CTRL_EN) + return 0; /* Not put in hardware buffers yet */ + + if (gr_read32(&ep->regs->epstat) & (GR_EPSTAT_B1 | GR_EPSTAT_B0)) + return 0; /* Not transmitted yet, still in hardware buffers */ + + /* Write complete */ + gr_dma_advance(ep, 0); + + return 1; +} + +/* + * Handles interrupts from out endpoints. Returns whether something was handled. + * + * Must be called with dev->lock held, irqs disabled and with !ep->stopped. + */ +static int gr_handle_out_ep(struct gr_ep *ep) +{ + u32 ep_dmactrl; + u32 ctrl; + u16 len; + struct gr_request *req; + struct gr_udc *dev = ep->dev; + + req = list_first_entry(&ep->queue, struct gr_request, queue); + if (!req->curr_desc) + return 0; + + ctrl = ACCESS_ONCE(req->curr_desc->ctrl); + if (ctrl & GR_DESC_OUT_CTRL_EN) + return 0; /* Not received yet */ + + /* Read complete */ + len = ctrl & GR_DESC_OUT_CTRL_LEN_MASK; + req->req.actual += len; + if (ctrl & GR_DESC_OUT_CTRL_SE) + req->setup = 1; + + if (len < ep->ep.maxpacket || req->req.actual == req->req.length) { + /* Short packet or the expected size - we are done */ + + if ((ep == &dev->epo[0]) && (dev->ep0state == GR_EP0_OSTATUS)) { + /* + * Send a status stage ZLP to ack the DATA stage in the + * OUT direction. This needs to be done before + * gr_dma_advance as that can lead to a call to + * ep0_setup that can change dev->ep0state. + */ + gr_ep0_respond_empty(dev); + gr_set_ep0state(dev, GR_EP0_SETUP); + } + + gr_dma_advance(ep, 0); + } else { + /* Not done yet. Enable the next descriptor to receive more. */ + req->curr_desc = req->curr_desc->next_desc; + req->curr_desc->ctrl |= GR_DESC_OUT_CTRL_EN; + + ep_dmactrl = gr_read32(&ep->regs->dmactrl); + gr_write32(&ep->regs->dmactrl, ep_dmactrl | GR_DMACTRL_DA); + } + + return 1; +} + +/* + * Handle state changes. Returns whether something was handled. + * + * Must be called with dev->lock held and irqs disabled. + */ +static int gr_handle_state_changes(struct gr_udc *dev) +{ + u32 status = gr_read32(&dev->regs->status); + int handled = 0; + int powstate = !(dev->gadget.state == USB_STATE_NOTATTACHED || + dev->gadget.state == USB_STATE_ATTACHED); + + /* VBUS valid detected */ + if (!powstate && (status & GR_STATUS_VB)) { + dev_dbg(dev->dev, "STATUS: vbus valid detected\n"); + gr_vbus_connected(dev, status); + handled = 1; + } + + /* Disconnect */ + if (powstate && !(status & GR_STATUS_VB)) { + dev_dbg(dev->dev, "STATUS: vbus invalid detected\n"); + gr_vbus_disconnected(dev); + handled = 1; + } + + /* USB reset detected */ + if (status & GR_STATUS_UR) { + dev_dbg(dev->dev, "STATUS: USB reset - speed is %s\n", + GR_SPEED_STR(status)); + gr_write32(&dev->regs->status, GR_STATUS_UR); + gr_udc_usbreset(dev, status); + handled = 1; + } + + /* Speed change */ + if (dev->gadget.speed != GR_SPEED(status)) { + dev_dbg(dev->dev, "STATUS: USB Speed change to %s\n", + GR_SPEED_STR(status)); + dev->gadget.speed = GR_SPEED(status); + handled = 1; + } + + /* Going into suspend */ + if ((dev->ep0state != GR_EP0_SUSPEND) && !(status & GR_STATUS_SU)) { + dev_dbg(dev->dev, "STATUS: USB suspend\n"); + gr_set_ep0state(dev, GR_EP0_SUSPEND); + dev->suspended_from = dev->gadget.state; + usb_gadget_set_state(&dev->gadget, USB_STATE_SUSPENDED); + + if ((dev->gadget.speed != USB_SPEED_UNKNOWN) && + dev->driver && dev->driver->suspend) { + spin_unlock(&dev->lock); + + dev->driver->suspend(&dev->gadget); + + spin_lock(&dev->lock); + } + handled = 1; + } + + /* Coming out of suspend */ + if ((dev->ep0state == GR_EP0_SUSPEND) && (status & GR_STATUS_SU)) { + dev_dbg(dev->dev, "STATUS: USB resume\n"); + if (dev->suspended_from == USB_STATE_POWERED) + gr_set_ep0state(dev, GR_EP0_DISCONNECT); + else + gr_set_ep0state(dev, GR_EP0_SETUP); + usb_gadget_set_state(&dev->gadget, dev->suspended_from); + + if ((dev->gadget.speed != USB_SPEED_UNKNOWN) && + dev->driver && dev->driver->resume) { + spin_unlock(&dev->lock); + + dev->driver->resume(&dev->gadget); + + spin_lock(&dev->lock); + } + handled = 1; + } + + return handled; +} + +/* Non-interrupt context irq handler */ +static irqreturn_t gr_irq_handler(int irq, void *_dev) +{ + struct gr_udc *dev = _dev; + struct gr_ep *ep; + int handled = 0; + int i; + unsigned long flags; + + spin_lock_irqsave(&dev->lock, flags); + + if (!dev->irq_enabled) + goto out; + + /* + * Check IN ep interrupts. We check these before the OUT eps because + * some gadgets reuse the request that might already be currently + * outstanding and needs to be completed (mainly setup requests). + */ + for (i = 0; i < dev->nepi; i++) { + ep = &dev->epi[i]; + if (!ep->stopped && !ep->callback && !list_empty(&ep->queue)) + handled = gr_handle_in_ep(ep) || handled; + } + + /* Check OUT ep interrupts */ + for (i = 0; i < dev->nepo; i++) { + ep = &dev->epo[i]; + if (!ep->stopped && !ep->callback && !list_empty(&ep->queue)) + handled = gr_handle_out_ep(ep) || handled; + } + + /* Check status interrupts */ + handled = gr_handle_state_changes(dev) || handled; + + /* + * Check AMBA DMA errors. Only check if we didn't find anything else to + * handle because this shouldn't happen if we did everything right. + */ + if (!handled) { + list_for_each_entry(ep, &dev->ep_list, ep_list) { + if (gr_read32(&ep->regs->dmactrl) & GR_DMACTRL_AE) { + dev_err(dev->dev, + "AMBA Error occurred for %s\n", + ep->ep.name); + handled = 1; + } + } + } + +out: + spin_unlock_irqrestore(&dev->lock, flags); + + return handled ? IRQ_HANDLED : IRQ_NONE; +} + +/* Interrupt context irq handler */ +static irqreturn_t gr_irq(int irq, void *_dev) +{ + struct gr_udc *dev = _dev; + + if (!dev->irq_enabled) + return IRQ_NONE; + + return IRQ_WAKE_THREAD; +} + +/* ---------------------------------------------------------------------- */ +/* USB ep ops */ + +/* Enable endpoint. Not for ep0in and ep0out that are handled separately. */ +static int gr_ep_enable(struct usb_ep *_ep, + const struct usb_endpoint_descriptor *desc) +{ + struct gr_udc *dev; + struct gr_ep *ep; + u8 mode; + u8 nt; + u16 max; + u16 buffer_size = 0; + u32 epctrl; + + ep = container_of(_ep, struct gr_ep, ep); + if (!_ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) + return -EINVAL; + + dev = ep->dev; + + /* 'ep0' IN and OUT are reserved */ + if (ep == &dev->epo[0] || ep == &dev->epi[0]) + return -EINVAL; + + if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) + return -ESHUTDOWN; + + /* Make sure we are clear for enabling */ + epctrl = gr_read32(&ep->regs->epctrl); + if (epctrl & GR_EPCTRL_EV) + return -EBUSY; + + /* Check that directions match */ + if (!ep->is_in != !usb_endpoint_dir_in(desc)) + return -EINVAL; + + /* Check ep num */ + if ((!ep->is_in && ep->num >= dev->nepo) || + (ep->is_in && ep->num >= dev->nepi)) + return -EINVAL; + + if (usb_endpoint_xfer_control(desc)) { + mode = 0; + } else if (usb_endpoint_xfer_isoc(desc)) { + mode = 1; + } else if (usb_endpoint_xfer_bulk(desc)) { + mode = 2; + } else if (usb_endpoint_xfer_int(desc)) { + mode = 3; + } else { + dev_err(dev->dev, "Unknown transfer type for %s\n", + ep->ep.name); + return -EINVAL; + } + + /* + * Bits 10-0 set the max payload. 12-11 set the number of + * additional transactions. + */ + max = 0x7ff & usb_endpoint_maxp(desc); + nt = 0x3 & (usb_endpoint_maxp(desc) >> 11); + buffer_size = GR_BUFFER_SIZE(epctrl); + if (nt && (mode == 0 || mode == 2)) { + dev_err(dev->dev, + "%s mode: multiple trans./microframe not valid\n", + (mode == 2 ? "Bulk" : "Control")); + return -EINVAL; + } else if (nt == 0x11) { + dev_err(dev->dev, "Invalid value for trans./microframe\n"); + return -EINVAL; + } else if ((nt + 1) * max > buffer_size) { + dev_err(dev->dev, "Hw buffer size %d < max payload %d * %d\n", + buffer_size, (nt + 1), max); + return -EINVAL; + } else if (max == 0) { + dev_err(dev->dev, "Max payload cannot be set to 0\n"); + return -EINVAL; + } + + spin_lock(&ep->dev->lock); + + if (!ep->stopped) { + spin_unlock(&ep->dev->lock); + return -EBUSY; + } + + ep->stopped = 0; + ep->wedged = 0; + ep->ep.desc = desc; + ep->ep.maxpacket = max; + ep->dma_start = 0; + + + if (nt) { + /* + * Maximum possible size of all payloads in one microframe + * regardless of direction when using high-bandwidth mode. + */ + ep->bytes_per_buffer = (nt + 1) * max; + } else if (ep->is_in) { + /* + * The biggest multiple of maximum packet size that fits into + * the buffer. The hardware will split up into many packets in + * the IN direction. + */ + ep->bytes_per_buffer = (buffer_size / max) * max; + } else { + /* + * Only single packets will be placed the buffers in the OUT + * direction. + */ + ep->bytes_per_buffer = max; + } + + epctrl = (max << GR_EPCTRL_MAXPL_POS) + | (nt << GR_EPCTRL_NT_POS) + | (mode << GR_EPCTRL_TT_POS) + | GR_EPCTRL_EV; + if (ep->is_in) + epctrl |= GR_EPCTRL_PI; + gr_write32(&ep->regs->epctrl, epctrl); + + gr_write32(&ep->regs->dmactrl, GR_DMACTRL_IE | GR_DMACTRL_AI); + + spin_unlock(&ep->dev->lock); + + dev_dbg(ep->dev->dev, "EP: %s enabled - %s with %d bytes/buffer\n", + ep->ep.name, gr_modestring[mode], ep->bytes_per_buffer); + return 0; +} + +/* Disable endpoint. Not for ep0in and ep0out that are handled separately. */ +static int gr_ep_disable(struct usb_ep *_ep) +{ + struct gr_ep *ep; + struct gr_udc *dev; + unsigned long flags; + + ep = container_of(_ep, struct gr_ep, ep); + if (!_ep || !ep->ep.desc) + return -ENODEV; + + dev = ep->dev; + + /* 'ep0' IN and OUT are reserved */ + if (ep == &dev->epo[0] || ep == &dev->epi[0]) + return -EINVAL; + + if (dev->ep0state == GR_EP0_SUSPEND) + return -EBUSY; + + dev_dbg(ep->dev->dev, "EP: disable %s\n", ep->ep.name); + + spin_lock_irqsave(&dev->lock, flags); + + gr_ep_nuke(ep); + gr_ep_reset(ep); + ep->ep.desc = NULL; + + spin_unlock_irqrestore(&dev->lock, flags); + + return 0; +} + +/* + * Frees a request, but not any DMA buffers associated with it + * (gr_finish_request should already have taken care of that). + */ +static void gr_free_request(struct usb_ep *_ep, struct usb_request *_req) +{ + struct gr_request *req; + + if (!_ep || !_req) + return; + req = container_of(_req, struct gr_request, req); + + /* Leads to memory leak */ + WARN(!list_empty(&req->queue), + "request not dequeued properly before freeing\n"); + + kfree(req); +} + +/* Queue a request from the gadget */ +static int gr_queue_ext(struct usb_ep *_ep, struct usb_request *_req, + gfp_t gfp_flags) +{ + struct gr_ep *ep; + struct gr_request *req; + struct gr_udc *dev; + int ret; + + if (unlikely(!_ep || !_req)) + return -EINVAL; + + ep = container_of(_ep, struct gr_ep, ep); + req = container_of(_req, struct gr_request, req); + dev = ep->dev; + + spin_lock(&ep->dev->lock); + + /* + * The ep0 pointer in the gadget struct is used both for ep0in and + * ep0out. In a data stage in the out direction ep0out needs to be used + * instead of the default ep0in. Completion functions might use + * driver_data, so that needs to be copied as well. + */ + if ((ep == &dev->epi[0]) && (dev->ep0state == GR_EP0_ODATA)) { + ep = &dev->epo[0]; + ep->ep.driver_data = dev->epi[0].ep.driver_data; + } + + if (ep->is_in) + gr_dbgprint_request("EXTERN", ep, req); + + ret = gr_queue(ep, req, gfp_flags); + + spin_unlock(&ep->dev->lock); + + return ret; +} + +/* Dequeue JUST ONE request */ +static int gr_dequeue(struct usb_ep *_ep, struct usb_request *_req) +{ + struct gr_request *req; + struct gr_ep *ep; + struct gr_udc *dev; + int ret = 0; + unsigned long flags; + + ep = container_of(_ep, struct gr_ep, ep); + if (!_ep || !_req || (!ep->ep.desc && ep->num != 0)) + return -EINVAL; + dev = ep->dev; + if (!dev->driver) + return -ESHUTDOWN; + + /* We can't touch (DMA) registers when suspended */ + if (dev->ep0state == GR_EP0_SUSPEND) + return -EBUSY; + + spin_lock_irqsave(&dev->lock, flags); + + /* Make sure it's actually queued on this endpoint */ + list_for_each_entry(req, &ep->queue, queue) { + if (&req->req == _req) + break; + } + if (&req->req != _req) { + ret = -EINVAL; + goto out; + } + + if (list_first_entry(&ep->queue, struct gr_request, queue) == req) { + /* This request is currently being processed */ + gr_abort_dma(ep); + if (ep->stopped) + gr_finish_request(ep, req, -ECONNRESET); + else + gr_dma_advance(ep, -ECONNRESET); + } else if (!list_empty(&req->queue)) { + /* Not being processed - gr_finish_request dequeues it */ + gr_finish_request(ep, req, -ECONNRESET); + } else { + ret = -EOPNOTSUPP; + } + +out: + spin_unlock_irqrestore(&dev->lock, flags); + + return ret; +} + +/* Helper for gr_set_halt and gr_set_wedge */ +static int gr_set_halt_wedge(struct usb_ep *_ep, int halt, int wedge) +{ + int ret; + struct gr_ep *ep; + + if (!_ep) + return -ENODEV; + ep = container_of(_ep, struct gr_ep, ep); + + spin_lock(&ep->dev->lock); + + /* Halting an IN endpoint should fail if queue is not empty */ + if (halt && ep->is_in && !list_empty(&ep->queue)) { + ret = -EAGAIN; + goto out; + } + + ret = gr_ep_halt_wedge(ep, halt, wedge, 0); + +out: + spin_unlock(&ep->dev->lock); + + return ret; +} + +/* Halt endpoint */ +static int gr_set_halt(struct usb_ep *_ep, int halt) +{ + return gr_set_halt_wedge(_ep, halt, 0); +} + +/* Halt and wedge endpoint */ +static int gr_set_wedge(struct usb_ep *_ep) +{ + return gr_set_halt_wedge(_ep, 1, 1); +} + +/* + * Return the total number of bytes currently stored in the internal buffers of + * the endpoint. + */ +static int gr_fifo_status(struct usb_ep *_ep) +{ + struct gr_ep *ep; + u32 epstat; + u32 bytes = 0; + + if (!_ep) + return -ENODEV; + ep = container_of(_ep, struct gr_ep, ep); + + epstat = gr_read32(&ep->regs->epstat); + + if (epstat & GR_EPSTAT_B0) + bytes += (epstat & GR_EPSTAT_B0CNT_MASK) >> GR_EPSTAT_B0CNT_POS; + if (epstat & GR_EPSTAT_B1) + bytes += (epstat & GR_EPSTAT_B1CNT_MASK) >> GR_EPSTAT_B1CNT_POS; + + return bytes; +} + + +/* Empty data from internal buffers of an endpoint. */ +static void gr_fifo_flush(struct usb_ep *_ep) +{ + struct gr_ep *ep; + u32 epctrl; + + if (!_ep) + return; + ep = container_of(_ep, struct gr_ep, ep); + dev_vdbg(ep->dev->dev, "EP: flush fifo %s\n", ep->ep.name); + + spin_lock(&ep->dev->lock); + + epctrl = gr_read32(&ep->regs->epctrl); + epctrl |= GR_EPCTRL_CB; + gr_write32(&ep->regs->epctrl, epctrl); + + spin_unlock(&ep->dev->lock); +} + +static struct usb_ep_ops gr_ep_ops = { + .enable = gr_ep_enable, + .disable = gr_ep_disable, + + .alloc_request = gr_alloc_request, + .free_request = gr_free_request, + + .queue = gr_queue_ext, + .dequeue = gr_dequeue, + + .set_halt = gr_set_halt, + .set_wedge = gr_set_wedge, + .fifo_status = gr_fifo_status, + .fifo_flush = gr_fifo_flush, +}; + +/* ---------------------------------------------------------------------- */ +/* USB Gadget ops */ + +static int gr_get_frame(struct usb_gadget *_gadget) +{ + struct gr_udc *dev; + + if (!_gadget) + return -ENODEV; + dev = container_of(_gadget, struct gr_udc, gadget); + return gr_read32(&dev->regs->status) & GR_STATUS_FN_MASK; +} + +static int gr_wakeup(struct usb_gadget *_gadget) +{ + struct gr_udc *dev; + + if (!_gadget) + return -ENODEV; + dev = container_of(_gadget, struct gr_udc, gadget); + + /* Remote wakeup feature not enabled by host*/ + if (!dev->remote_wakeup) + return -EINVAL; + + spin_lock(&dev->lock); + + gr_write32(&dev->regs->control, + gr_read32(&dev->regs->control) | GR_CONTROL_RW); + + spin_unlock(&dev->lock); + + return 0; +} + +static int gr_pullup(struct usb_gadget *_gadget, int is_on) +{ + struct gr_udc *dev; + u32 control; + + if (!_gadget) + return -ENODEV; + dev = container_of(_gadget, struct gr_udc, gadget); + + spin_lock(&dev->lock); + + control = gr_read32(&dev->regs->control); + if (is_on) + control |= GR_CONTROL_EP; + else + control &= ~GR_CONTROL_EP; + gr_write32(&dev->regs->control, control); + + spin_unlock(&dev->lock); + + return 0; +} + +static int gr_udc_start(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) +{ + struct gr_udc *dev = to_gr_udc(gadget); + + spin_lock(&dev->lock); + + /* Hook up the driver */ + driver->driver.bus = NULL; + dev->driver = driver; + + /* Get ready for host detection */ + gr_enable_vbus_detect(dev); + + spin_unlock(&dev->lock); + + dev_info(dev->dev, "Started with gadget driver '%s'\n", + driver->driver.name); + + return 0; +} + +static int gr_udc_stop(struct usb_gadget *gadget, + struct usb_gadget_driver *driver) +{ + struct gr_udc *dev = to_gr_udc(gadget); + unsigned long flags; + + spin_lock_irqsave(&dev->lock, flags); + + dev->driver = NULL; + gr_stop_activity(dev); + + spin_unlock_irqrestore(&dev->lock, flags); + + dev_info(dev->dev, "Stopped\n"); + + return 0; +} + +static const struct usb_gadget_ops gr_ops = { + .get_frame = gr_get_frame, + .wakeup = gr_wakeup, + .pullup = gr_pullup, + .udc_start = gr_udc_start, + .udc_stop = gr_udc_stop, + /* Other operations not supported */ +}; + +/* ---------------------------------------------------------------------- */ +/* Module probe, removal and of-matching */ + +static const char * const onames[] = { + "ep0out", "ep1out", "ep2out", "ep3out", "ep4out", "ep5out", + "ep6out", "ep7out", "ep8out", "ep9out", "ep10out", "ep11out", + "ep12out", "ep13out", "ep14out", "ep15out" +}; + +static const char * const inames[] = { + "ep0in", "ep1in", "ep2in", "ep3in", "ep4in", "ep5in", + "ep6in", "ep7in", "ep8in", "ep9in", "ep10in", "ep11in", + "ep12in", "ep13in", "ep14in", "ep15in" +}; + +/* Must be called with dev->lock held */ +static int gr_ep_init(struct gr_udc *dev, int num, int is_in, u32 maxplimit) +{ + struct gr_ep *ep; + struct gr_request *req; + struct usb_request *_req; + void *buf; + + if (is_in) { + ep = &dev->epi[num]; + ep->ep.name = inames[num]; + ep->regs = &dev->regs->epi[num]; + } else { + ep = &dev->epo[num]; + ep->ep.name = onames[num]; + ep->regs = &dev->regs->epo[num]; + } + + gr_ep_reset(ep); + ep->num = num; + ep->is_in = is_in; + ep->dev = dev; + ep->ep.ops = &gr_ep_ops; + INIT_LIST_HEAD(&ep->queue); + + if (num == 0) { + _req = gr_alloc_request(&ep->ep, GFP_KERNEL); + buf = devm_kzalloc(dev->dev, PAGE_SIZE, GFP_DMA | GFP_KERNEL); + if (!_req || !buf) { + /* possible _req freed by gr_probe via gr_remove */ + return -ENOMEM; + } + + req = container_of(_req, struct gr_request, req); + req->req.buf = buf; + req->req.length = MAX_CTRL_PL_SIZE; + + if (is_in) + dev->ep0reqi = req; /* Complete gets set as used */ + else + dev->ep0reqo = req; /* Completion treated separately */ + + usb_ep_set_maxpacket_limit(&ep->ep, MAX_CTRL_PL_SIZE); + ep->bytes_per_buffer = MAX_CTRL_PL_SIZE; + } else { + usb_ep_set_maxpacket_limit(&ep->ep, (u16)maxplimit); + list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list); + } + list_add_tail(&ep->ep_list, &dev->ep_list); + + return 0; +} + +/* Must be called with dev->lock held */ +static int gr_udc_init(struct gr_udc *dev) +{ + struct device_node *np = dev->dev->of_node; + u32 epctrl_val; + u32 dmactrl_val; + int i; + int ret = 0; + u32 *bufsizes; + u32 bufsize; + int len; + + gr_set_address(dev, 0); + + INIT_LIST_HEAD(&dev->gadget.ep_list); + dev->gadget.speed = USB_SPEED_UNKNOWN; + dev->gadget.ep0 = &dev->epi[0].ep; + + INIT_LIST_HEAD(&dev->ep_list); + gr_set_ep0state(dev, GR_EP0_DISCONNECT); + + bufsizes = (u32 *)of_get_property(np, "epobufsizes", &len); + len /= sizeof(u32); + for (i = 0; i < dev->nepo; i++) { + bufsize = (bufsizes && i < len) ? bufsizes[i] : 1024; + ret = gr_ep_init(dev, i, 0, bufsize); + if (ret) + return ret; + } + + bufsizes = (u32 *)of_get_property(np, "epibufsizes", &len); + len /= sizeof(u32); + for (i = 0; i < dev->nepi; i++) { + bufsize = (bufsizes && i < len) ? bufsizes[i] : 1024; + ret = gr_ep_init(dev, i, 1, bufsize); + if (ret) + return ret; + } + + /* Must be disabled by default */ + dev->remote_wakeup = 0; + + /* Enable ep0out and ep0in */ + epctrl_val = (MAX_CTRL_PL_SIZE << GR_EPCTRL_MAXPL_POS) | GR_EPCTRL_EV; + dmactrl_val = GR_DMACTRL_IE | GR_DMACTRL_AI; + gr_write32(&dev->epo[0].regs->epctrl, epctrl_val); + gr_write32(&dev->epi[0].regs->epctrl, epctrl_val | GR_EPCTRL_PI); + gr_write32(&dev->epo[0].regs->dmactrl, dmactrl_val); + gr_write32(&dev->epi[0].regs->dmactrl, dmactrl_val); + + return 0; +} + +static int gr_remove(struct platform_device *ofdev) +{ + struct gr_udc *dev = dev_get_drvdata(&ofdev->dev); + + if (dev->added) + usb_del_gadget_udc(&dev->gadget); /* Shuts everything down */ + if (dev->driver) + return -EBUSY; + + gr_dfs_delete(dev); + if (dev->desc_pool) + dma_pool_destroy(dev->desc_pool); + dev_set_drvdata(&ofdev->dev, NULL); + + gr_free_request(&dev->epi[0].ep, &dev->ep0reqi->req); + gr_free_request(&dev->epo[0].ep, &dev->ep0reqo->req); + + return 0; +} +static int gr_request_irq(struct gr_udc *dev, int irq) +{ + return devm_request_threaded_irq(dev->dev, irq, gr_irq, gr_irq_handler, + IRQF_SHARED, driver_name, dev); +} + +static int gr_probe(struct platform_device *ofdev) +{ + struct gr_udc *dev; + struct resource *res; + struct gr_regs __iomem *regs; + int retval; + u32 status; + + dev = devm_kzalloc(&ofdev->dev, sizeof(*dev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + dev->dev = &ofdev->dev; + + res = platform_get_resource(ofdev, IORESOURCE_MEM, 0); + regs = devm_ioremap_resource(dev->dev, res); + if (IS_ERR(regs)) + return PTR_ERR(regs); + + dev->irq = irq_of_parse_and_map(dev->dev->of_node, 0); + if (!dev->irq) { + dev_err(dev->dev, "No irq found\n"); + return -ENODEV; + } + + /* Some core configurations has separate irqs for IN and OUT events */ + dev->irqi = irq_of_parse_and_map(dev->dev->of_node, 1); + if (dev->irqi) { + dev->irqo = irq_of_parse_and_map(dev->dev->of_node, 2); + if (!dev->irqo) { + dev_err(dev->dev, "Found irqi but not irqo\n"); + return -ENODEV; + } + } + + dev->gadget.name = driver_name; + dev->gadget.max_speed = USB_SPEED_HIGH; + dev->gadget.ops = &gr_ops; + dev->gadget.quirk_ep_out_aligned_size = true; + + spin_lock_init(&dev->lock); + dev->regs = regs; + + dev_set_drvdata(&ofdev->dev, dev); + + /* Determine number of endpoints and data interface mode */ + status = gr_read32(&dev->regs->status); + dev->nepi = ((status & GR_STATUS_NEPI_MASK) >> GR_STATUS_NEPI_POS) + 1; + dev->nepo = ((status & GR_STATUS_NEPO_MASK) >> GR_STATUS_NEPO_POS) + 1; + + if (!(status & GR_STATUS_DM)) { + dev_err(dev->dev, "Slave mode cores are not supported\n"); + return -ENODEV; + } + + /* --- Effects of the following calls might need explicit cleanup --- */ + + /* Create DMA pool for descriptors */ + dev->desc_pool = dma_pool_create("desc_pool", dev->dev, + sizeof(struct gr_dma_desc), 4, 0); + if (!dev->desc_pool) { + dev_err(dev->dev, "Could not allocate DMA pool"); + return -ENOMEM; + } + + spin_lock(&dev->lock); + + /* Inside lock so that no gadget can use this udc until probe is done */ + retval = usb_add_gadget_udc(dev->dev, &dev->gadget); + if (retval) { + dev_err(dev->dev, "Could not add gadget udc"); + goto out; + } + dev->added = 1; + + retval = gr_udc_init(dev); + if (retval) + goto out; + + gr_dfs_create(dev); + + /* Clear all interrupt enables that might be left on since last boot */ + gr_disable_interrupts_and_pullup(dev); + + retval = gr_request_irq(dev, dev->irq); + if (retval) { + dev_err(dev->dev, "Failed to request irq %d\n", dev->irq); + goto out; + } + + if (dev->irqi) { + retval = gr_request_irq(dev, dev->irqi); + if (retval) { + dev_err(dev->dev, "Failed to request irqi %d\n", + dev->irqi); + goto out; + } + retval = gr_request_irq(dev, dev->irqo); + if (retval) { + dev_err(dev->dev, "Failed to request irqo %d\n", + dev->irqo); + goto out; + } + } + + if (dev->irqi) + dev_info(dev->dev, "regs: %p, irqs %d, %d, %d\n", dev->regs, + dev->irq, dev->irqi, dev->irqo); + else + dev_info(dev->dev, "regs: %p, irq %d\n", dev->regs, dev->irq); + +out: + spin_unlock(&dev->lock); + + if (retval) + gr_remove(ofdev); + + return retval; +} + +static struct of_device_id gr_match[] = { + {.name = "GAISLER_USBDC"}, + {.name = "01_021"}, + {}, +}; +MODULE_DEVICE_TABLE(of, gr_match); + +static struct platform_driver gr_driver = { + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + .of_match_table = gr_match, + }, + .probe = gr_probe, + .remove = gr_remove, +}; +module_platform_driver(gr_driver); + +MODULE_AUTHOR("Aeroflex Gaisler AB."); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/gr_udc.h b/drivers/usb/gadget/gr_udc.h new file mode 100644 index 00000000000..8388897d9ec --- /dev/null +++ b/drivers/usb/gadget/gr_udc.h @@ -0,0 +1,220 @@ +/* + * USB Peripheral Controller driver for Aeroflex Gaisler GRUSBDC. + * + * 2013 (c) Aeroflex Gaisler AB + * + * This driver supports GRUSBDC USB Device Controller cores available in the + * GRLIB VHDL IP core library. + * + * Full documentation of the GRUSBDC core can be found here: + * http://www.gaisler.com/products/grlib/grip.pdf + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * Contributors: + * - Andreas Larsson <andreas@gaisler.com> + * - Marko Isomaki + */ + +/* Control registers on the AMBA bus */ + +#define GR_MAXEP 16 /* Max # endpoints for *each* direction */ + +struct gr_epregs { + u32 epctrl; + union { + struct { /* Slave mode*/ + u32 slvctrl; + u32 slvdata; + }; + struct { /* DMA mode*/ + u32 dmactrl; + u32 dmaaddr; + }; + }; + u32 epstat; +}; + +struct gr_regs { + struct gr_epregs epo[GR_MAXEP]; /* 0x000 - 0x0fc */ + struct gr_epregs epi[GR_MAXEP]; /* 0x100 - 0x1fc */ + u32 control; /* 0x200 */ + u32 status; /* 0x204 */ +}; + +#define GR_EPCTRL_BUFSZ_SCALER 8 +#define GR_EPCTRL_BUFSZ_MASK 0xffe00000 +#define GR_EPCTRL_BUFSZ_POS 21 +#define GR_EPCTRL_PI BIT(20) +#define GR_EPCTRL_CB BIT(19) +#define GR_EPCTRL_CS BIT(18) +#define GR_EPCTRL_MAXPL_MASK 0x0003ff80 +#define GR_EPCTRL_MAXPL_POS 7 +#define GR_EPCTRL_NT_MASK 0x00000060 +#define GR_EPCTRL_NT_POS 5 +#define GR_EPCTRL_TT_MASK 0x00000018 +#define GR_EPCTRL_TT_POS 3 +#define GR_EPCTRL_EH BIT(2) +#define GR_EPCTRL_ED BIT(1) +#define GR_EPCTRL_EV BIT(0) + +#define GR_DMACTRL_AE BIT(10) +#define GR_DMACTRL_AD BIT(3) +#define GR_DMACTRL_AI BIT(2) +#define GR_DMACTRL_IE BIT(1) +#define GR_DMACTRL_DA BIT(0) + +#define GR_EPSTAT_PT BIT(29) +#define GR_EPSTAT_PR BIT(29) +#define GR_EPSTAT_B1CNT_MASK 0x1fff0000 +#define GR_EPSTAT_B1CNT_POS 16 +#define GR_EPSTAT_B0CNT_MASK 0x0000fff8 +#define GR_EPSTAT_B0CNT_POS 3 +#define GR_EPSTAT_B1 BIT(2) +#define GR_EPSTAT_B0 BIT(1) +#define GR_EPSTAT_BS BIT(0) + +#define GR_CONTROL_SI BIT(31) +#define GR_CONTROL_UI BIT(30) +#define GR_CONTROL_VI BIT(29) +#define GR_CONTROL_SP BIT(28) +#define GR_CONTROL_FI BIT(27) +#define GR_CONTROL_EP BIT(14) +#define GR_CONTROL_DH BIT(13) +#define GR_CONTROL_RW BIT(12) +#define GR_CONTROL_TS_MASK 0x00000e00 +#define GR_CONTROL_TS_POS 9 +#define GR_CONTROL_TM BIT(8) +#define GR_CONTROL_UA_MASK 0x000000fe +#define GR_CONTROL_UA_POS 1 +#define GR_CONTROL_SU BIT(0) + +#define GR_STATUS_NEPI_MASK 0xf0000000 +#define GR_STATUS_NEPI_POS 28 +#define GR_STATUS_NEPO_MASK 0x0f000000 +#define GR_STATUS_NEPO_POS 24 +#define GR_STATUS_DM BIT(23) +#define GR_STATUS_SU BIT(17) +#define GR_STATUS_UR BIT(16) +#define GR_STATUS_VB BIT(15) +#define GR_STATUS_SP BIT(14) +#define GR_STATUS_AF_MASK 0x00003800 +#define GR_STATUS_AF_POS 11 +#define GR_STATUS_FN_MASK 0x000007ff +#define GR_STATUS_FN_POS 0 + + +#define MAX_CTRL_PL_SIZE 64 /* As per USB standard for full and high speed */ + +/*-------------------------------------------------------------------------*/ + +/* Driver data structures and utilities */ + +struct gr_dma_desc { + u32 ctrl; + u32 data; + u32 next; + + /* These must be last because hw uses the previous three */ + u32 paddr; + struct gr_dma_desc *next_desc; +}; + +#define GR_DESC_OUT_CTRL_SE BIT(17) +#define GR_DESC_OUT_CTRL_IE BIT(15) +#define GR_DESC_OUT_CTRL_NX BIT(14) +#define GR_DESC_OUT_CTRL_EN BIT(13) +#define GR_DESC_OUT_CTRL_LEN_MASK 0x00001fff + +#define GR_DESC_IN_CTRL_MO BIT(18) +#define GR_DESC_IN_CTRL_PI BIT(17) +#define GR_DESC_IN_CTRL_ML BIT(16) +#define GR_DESC_IN_CTRL_IE BIT(15) +#define GR_DESC_IN_CTRL_NX BIT(14) +#define GR_DESC_IN_CTRL_EN BIT(13) +#define GR_DESC_IN_CTRL_LEN_MASK 0x00001fff + +#define GR_DESC_DMAADDR_MASK 0xfffffffc + +struct gr_ep { + struct usb_ep ep; + struct gr_udc *dev; + u16 bytes_per_buffer; + unsigned int dma_start; + struct gr_epregs __iomem *regs; + + unsigned num:8; + unsigned is_in:1; + unsigned stopped:1; + unsigned wedged:1; + unsigned callback:1; + + /* analogous to a host-side qh */ + struct list_head queue; + + struct list_head ep_list; +}; + +struct gr_request { + struct usb_request req; + struct list_head queue; + + /* Chain of dma descriptors */ + struct gr_dma_desc *first_desc; /* First in the chain */ + struct gr_dma_desc *curr_desc; /* Current descriptor */ + struct gr_dma_desc *last_desc; /* Last in the chain */ + + u8 setup; /* Setup packet */ +}; + +enum gr_ep0state { + GR_EP0_DISCONNECT = 0, /* No host */ + GR_EP0_SETUP, /* Between STATUS ack and SETUP report */ + GR_EP0_IDATA, /* IN data stage */ + GR_EP0_ODATA, /* OUT data stage */ + GR_EP0_ISTATUS, /* Status stage after IN data stage */ + GR_EP0_OSTATUS, /* Status stage after OUT data stage */ + GR_EP0_STALL, /* Data or status stages */ + GR_EP0_SUSPEND, /* USB suspend */ +}; + +struct gr_udc { + struct usb_gadget gadget; + struct gr_ep epi[GR_MAXEP]; + struct gr_ep epo[GR_MAXEP]; + struct usb_gadget_driver *driver; + struct dma_pool *desc_pool; + struct device *dev; + + enum gr_ep0state ep0state; + struct gr_request *ep0reqo; + struct gr_request *ep0reqi; + + struct gr_regs __iomem *regs; + int irq; + int irqi; + int irqo; + + unsigned added:1; + unsigned irq_enabled:1; + unsigned remote_wakeup:1; + + u8 test_mode; + + enum usb_device_state suspended_from; + + unsigned int nepi; + unsigned int nepo; + + struct list_head ep_list; + + spinlock_t lock; /* General lock, a.k.a. "dev->lock" in comments */ + + struct dentry *dfs_root; + struct dentry *dfs_state; +}; + +#define to_gr_udc(gadget) (container_of((gadget), struct gr_udc, gadget)) diff --git a/drivers/usb/gadget/lpc32xx_udc.c b/drivers/usb/gadget/lpc32xx_udc.c index 6a2a65aa005..049ebab0d36 100644 --- a/drivers/usb/gadget/lpc32xx_udc.c +++ b/drivers/usb/gadget/lpc32xx_udc.c @@ -1449,7 +1449,7 @@ static void udc_reinit(struct lpc32xx_udc *udc) if (i != 0) list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); - ep->ep.maxpacket = ep->maxpacket; + usb_ep_set_maxpacket_limit(&ep->ep, ep->maxpacket); INIT_LIST_HEAD(&ep->queue); ep->req_pending = 0; } diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c index d5f050d30ed..8cae01d8859 100644 --- a/drivers/usb/gadget/m66592-udc.c +++ b/drivers/usb/gadget/m66592-udc.c @@ -1647,9 +1647,9 @@ static int __init m66592_probe(struct platform_device *pdev) INIT_LIST_HEAD(&ep->queue); ep->ep.name = m66592_ep_name[i]; ep->ep.ops = &m66592_ep_ops; - ep->ep.maxpacket = 512; + usb_ep_set_maxpacket_limit(&ep->ep, 512); } - m66592->ep[0].ep.maxpacket = 64; + usb_ep_set_maxpacket_limit(&m66592->ep[0].ep, 64); m66592->ep[0].pipenum = 0; m66592->ep[0].fifoaddr = M66592_CFIFO; m66592->ep[0].fifosel = M66592_CFIFOSEL; diff --git a/drivers/usb/gadget/mv_u3d_core.c b/drivers/usb/gadget/mv_u3d_core.c index 234711eabea..9fe31d7dded 100644 --- a/drivers/usb/gadget/mv_u3d_core.c +++ b/drivers/usb/gadget/mv_u3d_core.c @@ -1336,7 +1336,7 @@ static int mv_u3d_eps_init(struct mv_u3d *u3d) ep->ep.name = ep->name; ep->ep.ops = &mv_u3d_ep_ops; ep->wedge = 0; - ep->ep.maxpacket = MV_U3D_EP0_MAX_PKT_SIZE; + usb_ep_set_maxpacket_limit(&ep->ep, MV_U3D_EP0_MAX_PKT_SIZE); ep->ep_num = 0; ep->ep.desc = &mv_u3d_ep0_desc; INIT_LIST_HEAD(&ep->queue); @@ -1361,7 +1361,7 @@ static int mv_u3d_eps_init(struct mv_u3d *u3d) ep->ep.name = ep->name; ep->ep.ops = &mv_u3d_ep_ops; - ep->ep.maxpacket = (unsigned short) ~0; + usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); ep->ep_num = i / 2; INIT_LIST_HEAD(&ep->queue); diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index 104cdbea635..d43ce95fc4b 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -1261,7 +1261,7 @@ static int eps_init(struct mv_udc *udc) ep->ep.ops = &mv_ep_ops; ep->wedge = 0; ep->stopped = 0; - ep->ep.maxpacket = EP0_MAX_PKT_SIZE; + usb_ep_set_maxpacket_limit(&ep->ep, EP0_MAX_PKT_SIZE); ep->ep_num = 0; ep->ep.desc = &mv_ep0_desc; INIT_LIST_HEAD(&ep->queue); @@ -1284,7 +1284,7 @@ static int eps_init(struct mv_udc *udc) ep->ep.ops = &mv_ep_ops; ep->stopped = 0; - ep->ep.maxpacket = (unsigned short) ~0; + usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); ep->ep_num = i / 2; INIT_LIST_HEAD(&ep->queue); diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c index bf2bb39f35a..ca15405583e 100644 --- a/drivers/usb/gadget/net2272.c +++ b/drivers/usb/gadget/net2272.c @@ -266,7 +266,7 @@ static void net2272_ep_reset(struct net2272_ep *ep) ep->desc = NULL; INIT_LIST_HEAD(&ep->queue); - ep->ep.maxpacket = ~0; + usb_ep_set_maxpacket_limit(&ep->ep, ~0); ep->ep.ops = &net2272_ep_ops; /* disable irqs, endpoint */ @@ -1409,7 +1409,7 @@ net2272_usb_reinit(struct net2272 *dev) ep->fifo_size = 64; net2272_ep_reset(ep); } - dev->ep[0].ep.maxpacket = 64; + usb_ep_set_maxpacket_limit(&dev->ep[0].ep, 64); dev->gadget.ep0 = &dev->ep[0].ep; dev->ep[0].stopped = 0; diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c index fc852177c08..43e5e2f9888 100644 --- a/drivers/usb/gadget/net2280.c +++ b/drivers/usb/gadget/net2280.c @@ -293,7 +293,7 @@ static void ep_reset (struct net2280_regs __iomem *regs, struct net2280_ep *ep) ep->desc = NULL; INIT_LIST_HEAD (&ep->queue); - ep->ep.maxpacket = ~0; + usb_ep_set_maxpacket_limit(&ep->ep, ~0); ep->ep.ops = &net2280_ep_ops; /* disable the dma, irqs, endpoint... */ @@ -1805,9 +1805,9 @@ static void usb_reinit (struct net2280 *dev) ep->regs = &dev->epregs [tmp]; ep_reset (dev->regs, ep); } - dev->ep [0].ep.maxpacket = 64; - dev->ep [5].ep.maxpacket = 64; - dev->ep [6].ep.maxpacket = 64; + usb_ep_set_maxpacket_limit(&dev->ep [0].ep, 64); + usb_ep_set_maxpacket_limit(&dev->ep [5].ep, 64); + usb_ep_set_maxpacket_limit(&dev->ep [6].ep, 64); dev->gadget.ep0 = &dev->ep [0].ep; dev->ep [0].stopped = 0; diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c index 0a8099a488c..3ab38616751 100644 --- a/drivers/usb/gadget/nokia.c +++ b/drivers/usb/gadget/nokia.c @@ -126,9 +126,9 @@ static int __init nokia_bind_config(struct usb_configuration *c) struct usb_function *f_ecm; struct usb_function *f_obex2 = NULL; int status = 0; - int obex1_stat = 0; - int obex2_stat = 0; - int phonet_stat = 0; + int obex1_stat = -1; + int obex2_stat = -1; + int phonet_stat = -1; if (!IS_ERR(fi_phonet)) { f_phonet = usb_get_function(fi_phonet); diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c index 83957cc225d..34bd713065c 100644 --- a/drivers/usb/gadget/omap_udc.c +++ b/drivers/usb/gadget/omap_udc.c @@ -2586,7 +2586,8 @@ omap_ep_setup(char *name, u8 addr, u8 type, ep->ep.name = ep->name; ep->ep.ops = &omap_ep_ops; - ep->ep.maxpacket = ep->maxpacket = maxp; + ep->maxpacket = maxp; + usb_ep_set_maxpacket_limit(&ep->ep, ep->maxpacket); list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); return buf; diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c index 78a3d928981..eb8c3bedb57 100644 --- a/drivers/usb/gadget/pch_udc.c +++ b/drivers/usb/gadget/pch_udc.c @@ -2896,12 +2896,12 @@ static void pch_udc_pcd_reinit(struct pch_udc_dev *dev) ep->offset_addr = (UDC_EPINT_OUT_SHIFT + ep->num) * UDC_EP_REG_SHIFT; /* need to set ep->ep.maxpacket and set Default Configuration?*/ - ep->ep.maxpacket = UDC_BULK_MAX_PKT_SIZE; + usb_ep_set_maxpacket_limit(&ep->ep, UDC_BULK_MAX_PKT_SIZE); list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list); INIT_LIST_HEAD(&ep->queue); } - dev->ep[UDC_EP0IN_IDX].ep.maxpacket = UDC_EP0IN_MAX_PKT_SIZE; - dev->ep[UDC_EP0OUT_IDX].ep.maxpacket = UDC_EP0OUT_MAX_PKT_SIZE; + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0IN_IDX].ep, UDC_EP0IN_MAX_PKT_SIZE); + usb_ep_set_maxpacket_limit(&dev->ep[UDC_EP0OUT_IDX].ep, UDC_EP0OUT_MAX_PKT_SIZE); /* remove ep0 in and out from the list. They have own pointer */ list_del_init(&dev->ep[UDC_EP0IN_IDX].ep.ep_list); diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index 409a3c45a36..33b09a7b626 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -1194,6 +1194,7 @@ static void udc_reinit(struct pxa25x_udc *dev) ep->stopped = 0; INIT_LIST_HEAD (&ep->queue); ep->pio_irqs = 0; + usb_ep_set_maxpacket_limit(&ep->ep, ep->ep.maxpacket); } /* the rest was statically initialized, and is read-only */ diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c index 3c97da7760d..cdf4d678be9 100644 --- a/drivers/usb/gadget/pxa27x_udc.c +++ b/drivers/usb/gadget/pxa27x_udc.c @@ -1737,9 +1737,12 @@ static void udc_init_data(struct pxa_udc *dev) } /* USB endpoints init */ - for (i = 1; i < NR_USB_ENDPOINTS; i++) + for (i = 1; i < NR_USB_ENDPOINTS; i++) { list_add_tail(&dev->udc_usb_ep[i].usb_ep.ep_list, &dev->gadget.ep_list); + usb_ep_set_maxpacket_limit(&dev->udc_usb_ep[i].usb_ep, + dev->udc_usb_ep[i].usb_ep.maxpacket); + } } /** diff --git a/drivers/usb/gadget/r8a66597-udc.c b/drivers/usb/gadget/r8a66597-udc.c index 68be48d3340..aff0a6718bc 100644 --- a/drivers/usb/gadget/r8a66597-udc.c +++ b/drivers/usb/gadget/r8a66597-udc.c @@ -1833,7 +1833,7 @@ static int __exit r8a66597_remove(struct platform_device *pdev) r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req); if (r8a66597->pdata->on_chip) { - clk_disable(r8a66597->clk); + clk_disable_unprepare(r8a66597->clk); clk_put(r8a66597->clk); } @@ -1931,7 +1931,7 @@ static int __init r8a66597_probe(struct platform_device *pdev) ret = PTR_ERR(r8a66597->clk); goto clean_up; } - clk_enable(r8a66597->clk); + clk_prepare_enable(r8a66597->clk); } if (r8a66597->pdata->sudmac) { @@ -1964,9 +1964,9 @@ static int __init r8a66597_probe(struct platform_device *pdev) INIT_LIST_HEAD(&ep->queue); ep->ep.name = r8a66597_ep_name[i]; ep->ep.ops = &r8a66597_ep_ops; - ep->ep.maxpacket = 512; + usb_ep_set_maxpacket_limit(&ep->ep, 512); } - r8a66597->ep[0].ep.maxpacket = 64; + usb_ep_set_maxpacket_limit(&r8a66597->ep[0].ep, 64); r8a66597->ep[0].pipenum = 0; r8a66597->ep[0].fifoaddr = CFIFO; r8a66597->ep[0].fifosel = CFIFOSEL; @@ -1996,7 +1996,7 @@ clean_up3: free_irq(irq, r8a66597); clean_up2: if (r8a66597->pdata->on_chip) { - clk_disable(r8a66597->clk); + clk_disable_unprepare(r8a66597->clk); clk_put(r8a66597->clk); } clean_up: diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c index a3ad732bc81..1ffbdb4659f 100644 --- a/drivers/usb/gadget/rndis.c +++ b/drivers/usb/gadget/rndis.c @@ -1142,7 +1142,7 @@ static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS]; #endif /* CONFIG_USB_GADGET_DEBUG_FILES */ -static int rndis_init(void) +int rndis_init(void) { u8 i; @@ -1174,9 +1174,8 @@ static int rndis_init(void) return 0; } -module_init(rndis_init); -static void rndis_exit(void) +void rndis_exit(void) { #ifdef CONFIG_USB_GADGET_DEBUG_FILES u8 i; @@ -1188,6 +1187,4 @@ static void rndis_exit(void) } #endif } -module_exit(rndis_exit); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index e20bc109fdd..c0ff1cb91f2 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -30,14 +30,14 @@ #include <linux/clk.h> #include <linux/regulator/consumer.h> #include <linux/of_platform.h> +#include <linux/phy/phy.h> +#include <linux/usb/phy.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb/phy.h> #include <linux/platform_data/s3c-hsotg.h> -#include <mach/map.h> - #include "s3c-hsotg.h" static const char * const s3c_hsotg_supply_names[] = { @@ -140,11 +140,13 @@ struct s3c_hsotg_ep { * @dev: The parent device supplied to the probe function * @driver: USB gadget driver * @phy: The otg phy transceiver structure for phy control. + * @uphy: The otg phy transceiver structure for old USB phy control. * @plat: The platform specific configuration data. This can be removed once * all SoCs support usb transceiver. * @regs: The memory area mapped for accessing registers. * @irq: The IRQ number we are using * @supplies: Definition of USB power supplies + * @phyif: PHY interface width * @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos. * @num_of_eps: Number of available EPs (excluding EP0) * @debug_root: root directrory for debugfs. @@ -161,7 +163,8 @@ struct s3c_hsotg_ep { struct s3c_hsotg { struct device *dev; struct usb_gadget_driver *driver; - struct usb_phy *phy; + struct phy *phy; + struct usb_phy *uphy; struct s3c_hsotg_plat *plat; spinlock_t lock; @@ -172,6 +175,7 @@ struct s3c_hsotg { struct regulator_bulk_data supplies[ARRAY_SIZE(s3c_hsotg_supply_names)]; + u32 phyif; unsigned int dedicated_fifos:1; unsigned char num_of_eps; @@ -2086,13 +2090,13 @@ static void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg) case DSTS_EnumSpd_FS48: hsotg->gadget.speed = USB_SPEED_FULL; ep0_mps = EP0_MPS_LIMIT; - ep_mps = 64; + ep_mps = 1023; break; case DSTS_EnumSpd_HS: hsotg->gadget.speed = USB_SPEED_HIGH; ep0_mps = EP0_MPS_LIMIT; - ep_mps = 512; + ep_mps = 1024; break; case DSTS_EnumSpd_LS: @@ -2156,6 +2160,9 @@ static void kill_all_requests(struct s3c_hsotg *hsotg, s3c_hsotg_complete_request(hsotg, ep, req, result); } + if(hsotg->dedicated_fifos) + if ((readl(hsotg->regs + DTXFSTS(ep->index)) & 0xffff) * 4 < 3072) + s3c_hsotg_txfifo_flush(hsotg, ep->index); } #define call_gadget(_hs, _entry) \ @@ -2283,7 +2290,7 @@ static void s3c_hsotg_core_init(struct s3c_hsotg *hsotg) */ /* set the PLL on, remove the HNP/SRP and set the PHY */ - writel(GUSBCFG_PHYIf16 | GUSBCFG_TOutCal(7) | + writel(hsotg->phyif | GUSBCFG_TOutCal(7) | (0x5 << 10), hsotg->regs + GUSBCFG); s3c_hsotg_init_fifo(hsotg); @@ -2908,8 +2915,11 @@ static void s3c_hsotg_phy_enable(struct s3c_hsotg *hsotg) dev_dbg(hsotg->dev, "pdev 0x%p\n", pdev); - if (hsotg->phy) - usb_phy_init(hsotg->phy); + if (hsotg->phy) { + phy_init(hsotg->phy); + phy_power_on(hsotg->phy); + } else if (hsotg->uphy) + usb_phy_init(hsotg->uphy); else if (hsotg->plat->phy_init) hsotg->plat->phy_init(pdev, hsotg->plat->phy_type); } @@ -2925,8 +2935,11 @@ static void s3c_hsotg_phy_disable(struct s3c_hsotg *hsotg) { struct platform_device *pdev = to_platform_device(hsotg->dev); - if (hsotg->phy) - usb_phy_shutdown(hsotg->phy); + if (hsotg->phy) { + phy_power_off(hsotg->phy); + phy_exit(hsotg->phy); + } else if (hsotg->uphy) + usb_phy_shutdown(hsotg->uphy); else if (hsotg->plat->phy_exit) hsotg->plat->phy_exit(pdev, hsotg->plat->phy_type); } @@ -3152,7 +3165,7 @@ static void s3c_hsotg_initep(struct s3c_hsotg *hsotg, hs_ep->parent = hsotg; hs_ep->ep.name = hs_ep->name; - hs_ep->ep.maxpacket = epnum ? 1024 : EP0_MPS_LIMIT; + usb_ep_set_maxpacket_limit(&hs_ep->ep, epnum ? 1024 : EP0_MPS_LIMIT); hs_ep->ep.ops = &s3c_hsotg_ep_ops; /* @@ -3533,7 +3546,8 @@ static void s3c_hsotg_delete_debug(struct s3c_hsotg *hsotg) static int s3c_hsotg_probe(struct platform_device *pdev) { struct s3c_hsotg_plat *plat = dev_get_platdata(&pdev->dev); - struct usb_phy *phy; + struct phy *phy; + struct usb_phy *uphy; struct device *dev = &pdev->dev; struct s3c_hsotg_ep *eps; struct s3c_hsotg *hsotg; @@ -3548,19 +3562,26 @@ static int s3c_hsotg_probe(struct platform_device *pdev) return -ENOMEM; } - phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + /* + * Attempt to find a generic PHY, then look for an old style + * USB PHY, finally fall back to pdata + */ + phy = devm_phy_get(&pdev->dev, "usb2-phy"); if (IS_ERR(phy)) { - /* Fallback for pdata */ - plat = dev_get_platdata(&pdev->dev); - if (!plat) { - dev_err(&pdev->dev, "no platform data or transceiver defined\n"); - return -EPROBE_DEFER; - } else { + uphy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); + if (IS_ERR(uphy)) { + /* Fallback for pdata */ + plat = dev_get_platdata(&pdev->dev); + if (!plat) { + dev_err(&pdev->dev, + "no platform data or transceiver defined\n"); + return -EPROBE_DEFER; + } hsotg->plat = plat; - } - } else { + } else + hsotg->uphy = uphy; + } else hsotg->phy = phy; - } hsotg->dev = dev; @@ -3627,6 +3648,19 @@ static int s3c_hsotg_probe(struct platform_device *pdev) goto err_supplies; } + /* Set default UTMI width */ + hsotg->phyif = GUSBCFG_PHYIf16; + + /* + * If using the generic PHY framework, check if the PHY bus + * width is 8-bit and set the phyif appropriately. + */ + if (hsotg->phy && (phy_get_bus_width(phy) == 8)) + hsotg->phyif = GUSBCFG_PHYIf8; + + if (hsotg->phy) + phy_init(hsotg->phy); + /* usb phy enable */ s3c_hsotg_phy_enable(hsotg); @@ -3720,6 +3754,8 @@ static int s3c_hsotg_remove(struct platform_device *pdev) } s3c_hsotg_phy_disable(hsotg); + if (hsotg->phy) + phy_exit(hsotg->phy); clk_disable_unprepare(hsotg->clk); return 0; @@ -3733,6 +3769,7 @@ static int s3c_hsotg_remove(struct platform_device *pdev) #ifdef CONFIG_OF static const struct of_device_id s3c_hsotg_of_ids[] = { { .compatible = "samsung,s3c6400-hsotg", }, + { .compatible = "snps,dwc2", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, s3c_hsotg_of_ids); diff --git a/drivers/usb/gadget/s3c-hsotg.h b/drivers/usb/gadget/s3c-hsotg.h index d650b129583..85f549ff8c1 100644 --- a/drivers/usb/gadget/s3c-hsotg.h +++ b/drivers/usb/gadget/s3c-hsotg.h @@ -55,6 +55,7 @@ #define GUSBCFG_HNPCap (1 << 9) #define GUSBCFG_SRPCap (1 << 8) #define GUSBCFG_PHYIf16 (1 << 3) +#define GUSBCFG_PHYIf8 (0 << 3) #define GUSBCFG_TOutCal_MASK (0x7 << 0) #define GUSBCFG_TOutCal_SHIFT (0) #define GUSBCFG_TOutCal_LIMIT (0x7) diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c index 1a1a41498db..ea4bbfe72ec 100644 --- a/drivers/usb/gadget/s3c-hsudc.c +++ b/drivers/usb/gadget/s3c-hsudc.c @@ -999,7 +999,7 @@ static void s3c_hsudc_initep(struct s3c_hsudc *hsudc, hsep->dev = hsudc; hsep->ep.name = hsep->name; - hsep->ep.maxpacket = epnum ? 512 : 64; + usb_ep_set_maxpacket_limit(&hsep->ep, epnum ? 512 : 64); hsep->ep.ops = &s3c_hsudc_ep_ops; hsep->fifo = hsudc->regs + S3C_BR(epnum); hsep->ep.desc = NULL; diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c index c72d810e6b3..f04b2c3154d 100644 --- a/drivers/usb/gadget/s3c2410_udc.c +++ b/drivers/usb/gadget/s3c2410_udc.c @@ -1629,6 +1629,7 @@ static void s3c2410_udc_reinit(struct s3c2410_udc *dev) ep->ep.desc = NULL; ep->halted = 0; INIT_LIST_HEAD(&ep->queue); + usb_ep_set_maxpacket_limit(&ep->ep, &ep->ep.maxpacket); } } diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c index 2aae0d61bb1..b7d4f82872b 100644 --- a/drivers/usb/gadget/u_ether.c +++ b/drivers/usb/gadget/u_ether.c @@ -753,7 +753,7 @@ static struct device_type gadget_type = { * gadget driver using this framework. The link layer addresses are * set up using module parameters. * - * Returns negative errno, or zero on success + * Returns an eth_dev pointer on success, or an ERR_PTR on failure. */ struct eth_dev *gether_setup_name(struct usb_gadget *g, const char *dev_addr, const char *host_addr, diff --git a/drivers/usb/gadget/u_ether.h b/drivers/usb/gadget/u_ether.h index fb23d1fde8e..0f0290acea7 100644 --- a/drivers/usb/gadget/u_ether.h +++ b/drivers/usb/gadget/u_ether.h @@ -106,7 +106,7 @@ struct eth_dev *gether_setup_name(struct usb_gadget *g, * gadget driver using this framework. The link layer addresses are * set up using module parameters. * - * Returns negative errno, or zero on success + * Returns a eth_dev pointer on success, or an ERR_PTR on failure */ static inline struct eth_dev *gether_setup(struct usb_gadget *g, const char *dev_addr, const char *host_addr, @@ -267,45 +267,4 @@ static inline bool can_support_ecm(struct usb_gadget *gadget) return true; } -/* each configuration may bind one instance of an ethernet link */ -int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], - struct eth_dev *dev); -int ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], - struct eth_dev *dev); - -#ifdef USB_ETH_RNDIS - -int rndis_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], - u32 vendorID, const char *manufacturer, struct eth_dev *dev); - -#else - -static inline int -rndis_bind_config_vendor(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], - u32 vendorID, const char *manufacturer, struct eth_dev *dev) -{ - return 0; -} - -#endif - -/** - * rndis_bind_config - add RNDIS network link to a configuration - * @c: the configuration to support the network link - * @ethaddr: a buffer in which the ethernet address of the host side - * side of the link was recorded - * Context: single threaded during gadget setup - * - * Returns zero on success, else negative errno. - * - * Caller must have called @gether_setup(). Caller is also responsible - * for calling @gether_cleanup() before module unload. - */ -static inline int rndis_bind_config(struct usb_configuration *c, - u8 ethaddr[ETH_ALEN], struct eth_dev *dev) -{ - return rndis_bind_config_vendor(c, ethaddr, 0, NULL, dev); -} - - #endif /* __U_ETHER_H */ diff --git a/drivers/usb/gadget/u_f.c b/drivers/usb/gadget/u_f.c new file mode 100644 index 00000000000..63b6642c162 --- /dev/null +++ b/drivers/usb/gadget/u_f.c @@ -0,0 +1,32 @@ +/* + * u_f.c -- USB function utilities for Gadget stack + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/usb/gadget.h> +#include "u_f.h" + +struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len) +{ + struct usb_request *req; + + req = usb_ep_alloc_request(ep, GFP_ATOMIC); + if (req) { + req->length = len ?: default_len; + req->buf = kmalloc(req->length, GFP_ATOMIC); + if (!req->buf) { + usb_ep_free_request(ep, req); + req = NULL; + } + } + return req; +} +EXPORT_SYMBOL(alloc_ep_req); diff --git a/drivers/usb/gadget/u_f.h b/drivers/usb/gadget/u_f.h new file mode 100644 index 00000000000..71034c061fc --- /dev/null +++ b/drivers/usb/gadget/u_f.h @@ -0,0 +1,26 @@ +/* + * u_f.h + * + * Utility definitions for USB functions + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __U_F_H__ +#define __U_F_H__ + +struct usb_ep; +struct usb_request; + +struct usb_request *alloc_ep_req(struct usb_ep *ep, int len, int default_len); + +#endif /* __U_F_H__ */ + + diff --git a/drivers/usb/gadget/u_fs.h b/drivers/usb/gadget/u_fs.h new file mode 100644 index 00000000000..bc2d3718219 --- /dev/null +++ b/drivers/usb/gadget/u_fs.h @@ -0,0 +1,267 @@ +/* + * u_fs.h + * + * Utility definitions for the FunctionFS + * + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef U_FFS_H +#define U_FFS_H + +#include <linux/usb/composite.h> +#include <linux/list.h> +#include <linux/mutex.h> + +#ifdef VERBOSE_DEBUG +#ifndef pr_vdebug +# define pr_vdebug pr_debug +#endif /* pr_vdebug */ +# define ffs_dump_mem(prefix, ptr, len) \ + print_hex_dump_bytes(pr_fmt(prefix ": "), DUMP_PREFIX_NONE, ptr, len) +#else +#ifndef pr_vdebug +# define pr_vdebug(...) do { } while (0) +#endif /* pr_vdebug */ +# define ffs_dump_mem(prefix, ptr, len) do { } while (0) +#endif /* VERBOSE_DEBUG */ + +#define ENTER() pr_vdebug("%s()\n", __func__) + +struct f_fs_opts; + +struct ffs_dev { + const char *name; + bool name_allocated; + bool mounted; + bool desc_ready; + bool single; + struct ffs_data *ffs_data; + struct f_fs_opts *opts; + struct list_head entry; + + int (*ffs_ready_callback)(struct ffs_data *ffs); + void (*ffs_closed_callback)(struct ffs_data *ffs); + void *(*ffs_acquire_dev_callback)(struct ffs_dev *dev); + void (*ffs_release_dev_callback)(struct ffs_dev *dev); +}; + +extern struct mutex ffs_lock; + +static inline void ffs_dev_lock(void) +{ + mutex_lock(&ffs_lock); +} + +static inline void ffs_dev_unlock(void) +{ + mutex_unlock(&ffs_lock); +} + +struct ffs_dev *ffs_alloc_dev(void); +int ffs_name_dev(struct ffs_dev *dev, const char *name); +int ffs_single_dev(struct ffs_dev *dev); +void ffs_free_dev(struct ffs_dev *dev); + +struct ffs_epfile; +struct ffs_function; + +enum ffs_state { + /* + * Waiting for descriptors and strings. + * + * In this state no open(2), read(2) or write(2) on epfiles + * may succeed (which should not be the problem as there + * should be no such files opened in the first place). + */ + FFS_READ_DESCRIPTORS, + FFS_READ_STRINGS, + + /* + * We've got descriptors and strings. We are or have called + * functionfs_ready_callback(). functionfs_bind() may have + * been called but we don't know. + * + * This is the only state in which operations on epfiles may + * succeed. + */ + FFS_ACTIVE, + + /* + * All endpoints have been closed. This state is also set if + * we encounter an unrecoverable error. The only + * unrecoverable error is situation when after reading strings + * from user space we fail to initialise epfiles or + * functionfs_ready_callback() returns with error (<0). + * + * In this state no open(2), read(2) or write(2) (both on ep0 + * as well as epfile) may succeed (at this point epfiles are + * unlinked and all closed so this is not a problem; ep0 is + * also closed but ep0 file exists and so open(2) on ep0 must + * fail). + */ + FFS_CLOSING +}; + +enum ffs_setup_state { + /* There is no setup request pending. */ + FFS_NO_SETUP, + /* + * User has read events and there was a setup request event + * there. The next read/write on ep0 will handle the + * request. + */ + FFS_SETUP_PENDING, + /* + * There was event pending but before user space handled it + * some other event was introduced which canceled existing + * setup. If this state is set read/write on ep0 return + * -EIDRM. This state is only set when adding event. + */ + FFS_SETUP_CANCELED +}; + +struct ffs_data { + struct usb_gadget *gadget; + + /* + * Protect access read/write operations, only one read/write + * at a time. As a consequence protects ep0req and company. + * While setup request is being processed (queued) this is + * held. + */ + struct mutex mutex; + + /* + * Protect access to endpoint related structures (basically + * usb_ep_queue(), usb_ep_dequeue(), etc. calls) except for + * endpoint zero. + */ + spinlock_t eps_lock; + + /* + * XXX REVISIT do we need our own request? Since we are not + * handling setup requests immediately user space may be so + * slow that another setup will be sent to the gadget but this + * time not to us but another function and then there could be + * a race. Is that the case? Or maybe we can use cdev->req + * after all, maybe we just need some spinlock for that? + */ + struct usb_request *ep0req; /* P: mutex */ + struct completion ep0req_completion; /* P: mutex */ + int ep0req_status; /* P: mutex */ + + /* reference counter */ + atomic_t ref; + /* how many files are opened (EP0 and others) */ + atomic_t opened; + + /* EP0 state */ + enum ffs_state state; + + /* + * Possible transitions: + * + FFS_NO_SETUP -> FFS_SETUP_PENDING -- P: ev.waitq.lock + * happens only in ep0 read which is P: mutex + * + FFS_SETUP_PENDING -> FFS_NO_SETUP -- P: ev.waitq.lock + * happens only in ep0 i/o which is P: mutex + * + FFS_SETUP_PENDING -> FFS_SETUP_CANCELED -- P: ev.waitq.lock + * + FFS_SETUP_CANCELED -> FFS_NO_SETUP -- cmpxchg + */ + enum ffs_setup_state setup_state; + +#define FFS_SETUP_STATE(ffs) \ + ((enum ffs_setup_state)cmpxchg(&(ffs)->setup_state, \ + FFS_SETUP_CANCELED, FFS_NO_SETUP)) + + /* Events & such. */ + struct { + u8 types[4]; + unsigned short count; + /* XXX REVISIT need to update it in some places, or do we? */ + unsigned short can_stall; + struct usb_ctrlrequest setup; + + wait_queue_head_t waitq; + } ev; /* the whole structure, P: ev.waitq.lock */ + + /* Flags */ + unsigned long flags; +#define FFS_FL_CALL_CLOSED_CALLBACK 0 +#define FFS_FL_BOUND 1 + + /* Active function */ + struct ffs_function *func; + + /* + * Device name, write once when file system is mounted. + * Intended for user to read if she wants. + */ + const char *dev_name; + /* Private data for our user (ie. gadget). Managed by user. */ + void *private_data; + + /* filled by __ffs_data_got_descs() */ + /* + * Real descriptors are 16 bytes after raw_descs (so you need + * to skip 16 bytes (ie. ffs->raw_descs + 16) to get to the + * first full speed descriptor). raw_descs_length and + * raw_fs_descs_length do not have those 16 bytes added. + */ + const void *raw_descs; + unsigned raw_descs_length; + unsigned raw_fs_descs_length; + unsigned fs_descs_count; + unsigned hs_descs_count; + + unsigned short strings_count; + unsigned short interfaces_count; + unsigned short eps_count; + unsigned short _pad1; + + /* filled by __ffs_data_got_strings() */ + /* ids in stringtabs are set in functionfs_bind() */ + const void *raw_strings; + struct usb_gadget_strings **stringtabs; + + /* + * File system's super block, write once when file system is + * mounted. + */ + struct super_block *sb; + + /* File permissions, written once when fs is mounted */ + struct ffs_file_perms { + umode_t mode; + kuid_t uid; + kgid_t gid; + } file_perms; + + /* + * The endpoint files, filled by ffs_epfiles_create(), + * destroyed by ffs_epfiles_destroy(). + */ + struct ffs_epfile *epfiles; +}; + + +struct f_fs_opts { + struct usb_function_instance func_inst; + struct ffs_dev *dev; + unsigned refcnt; + bool no_configfs; +}; + +static inline struct f_fs_opts *to_f_fs_opts(struct usb_function_instance *fi) +{ + return container_of(fi, struct f_fs_opts, func_inst); +} + +#endif /* U_FFS_H */ diff --git a/drivers/usb/gadget/u_rndis.h b/drivers/usb/gadget/u_rndis.h index c62ba82e960..7291b15c9dc 100644 --- a/drivers/usb/gadget/u_rndis.h +++ b/drivers/usb/gadget/u_rndis.h @@ -36,6 +36,8 @@ struct f_rndis_opts { int refcnt; }; +int rndis_init(void); +void rndis_exit(void); void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net); #endif /* U_RNDIS_H */ diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c index f49b0b61ecc..9f170c53e3d 100644 --- a/drivers/usb/gadget/zero.c +++ b/drivers/usb/gadget/zero.c @@ -64,10 +64,10 @@ static bool loopdefault = 0; module_param(loopdefault, bool, S_IRUGO|S_IWUSR); static struct usb_zero_options gzero_options = { - .isoc_interval = 4, - .isoc_maxpacket = 1024, - .bulk_buflen = 4096, - .qlen = 32, + .isoc_interval = GZERO_ISOC_INTERVAL, + .isoc_maxpacket = GZERO_ISOC_MAXPACKET, + .bulk_buflen = GZERO_BULK_BUFLEN, + .qlen = GZERO_QLEN, }; /*-------------------------------------------------------------------------*/ diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index 57dfc0cedb0..688dc8bb192 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -6,7 +6,7 @@ # (M)HDRC = (Multipoint) Highspeed Dual-Role Controller config USB_MUSB_HDRC tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, ...)' - depends on USB_GADGET + depends on (USB || USB_GADGET) help Say Y here if your system has a dual role high speed USB controller based on the Mentor Graphics silicon IP. Then @@ -35,21 +35,21 @@ choice config USB_MUSB_HOST bool "Host only mode" - depends on USB + depends on USB=y || USB=USB_MUSB_HDRC help Select this when you want to use MUSB in host mode only, thereby the gadget feature will be regressed. config USB_MUSB_GADGET bool "Gadget only mode" - depends on USB_GADGET + depends on USB_GADGET=y || USB_GADGET=USB_MUSB_HDRC help Select this when you want to use MUSB in gadget mode only, thereby the host feature will be regressed. config USB_MUSB_DUAL_ROLE bool "Dual Role mode" - depends on (USB && USB_GADGET) + depends on ((USB=y || USB=USB_MUSB_HDRC) && (USB_GADGET=y || USB_GADGET=USB_MUSB_HDRC)) help This is the default mode of working of MUSB controller where both host and gadget features are enabled. @@ -93,6 +93,12 @@ config USB_MUSB_BLACKFIN config USB_MUSB_UX500 tristate "Ux500 platforms" +config USB_MUSB_JZ4740 + tristate "JZ4740" + depends on MACH_JZ4740 || COMPILE_TEST + depends on USB_MUSB_GADGET + depends on USB_OTG_BLACKLIST_HUB + endchoice config USB_MUSB_AM335X_CHILD @@ -100,7 +106,7 @@ config USB_MUSB_AM335X_CHILD choice prompt 'MUSB DMA mode' - default MUSB_PIO_ONLY if ARCH_MULTIPLATFORM + default MUSB_PIO_ONLY if ARCH_MULTIPLATFORM || USB_MUSB_JZ4740 default USB_UX500_DMA if USB_MUSB_UX500 default USB_INVENTRA_DMA if USB_MUSB_OMAP2PLUS || USB_MUSB_BLACKFIN default USB_TI_CPPI_DMA if USB_MUSB_DAVINCI diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile index c5ea5c6dc16..ba495018b41 100644 --- a/drivers/usb/musb/Makefile +++ b/drivers/usb/musb/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_USB_MUSB_DAVINCI) += davinci.o obj-$(CONFIG_USB_MUSB_DA8XX) += da8xx.o obj-$(CONFIG_USB_MUSB_BLACKFIN) += blackfin.o obj-$(CONFIG_USB_MUSB_UX500) += ux500.o +obj-$(CONFIG_USB_MUSB_JZ4740) += jz4740.o obj-$(CONFIG_USB_MUSB_AM335X_CHILD) += musb_am335x.o diff --git a/drivers/usb/musb/jz4740.c b/drivers/usb/musb/jz4740.c new file mode 100644 index 00000000000..5f30537f192 --- /dev/null +++ b/drivers/usb/musb/jz4740.c @@ -0,0 +1,201 @@ +/* + * Ingenic JZ4740 "glue layer" + * + * Copyright (C) 2013, Apelete Seketeli <apelete@seketeli.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/clk.h> +#include <linux/dma-mapping.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +#include "musb_core.h" + +struct jz4740_glue { + struct device *dev; + struct platform_device *musb; + struct clk *clk; +}; + +static irqreturn_t jz4740_musb_interrupt(int irq, void *__hci) +{ + unsigned long flags; + irqreturn_t retval = IRQ_NONE; + struct musb *musb = __hci; + + spin_lock_irqsave(&musb->lock, flags); + + musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); + musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); + musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); + + /* + * The controller is gadget only, the state of the host mode IRQ bits is + * undefined. Mask them to make sure that the musb driver core will + * never see them set + */ + musb->int_usb &= MUSB_INTR_SUSPEND | MUSB_INTR_RESUME | + MUSB_INTR_RESET | MUSB_INTR_SOF; + + if (musb->int_usb || musb->int_tx || musb->int_rx) + retval = musb_interrupt(musb); + + spin_unlock_irqrestore(&musb->lock, flags); + + return retval; +} + +static struct musb_fifo_cfg jz4740_musb_fifo_cfg[] = { +{ .hw_ep_num = 1, .style = FIFO_TX, .maxpacket = 512, }, +{ .hw_ep_num = 1, .style = FIFO_RX, .maxpacket = 512, }, +{ .hw_ep_num = 2, .style = FIFO_TX, .maxpacket = 64, }, +}; + +static struct musb_hdrc_config jz4740_musb_config = { + /* Silicon does not implement USB OTG. */ + .multipoint = 0, + /* Max EPs scanned, driver will decide which EP can be used. */ + .num_eps = 4, + /* RAMbits needed to configure EPs from table */ + .ram_bits = 9, + .fifo_cfg = jz4740_musb_fifo_cfg, + .fifo_cfg_size = ARRAY_SIZE(jz4740_musb_fifo_cfg), +}; + +static struct musb_hdrc_platform_data jz4740_musb_platform_data = { + .mode = MUSB_PERIPHERAL, + .config = &jz4740_musb_config, +}; + +static int jz4740_musb_init(struct musb *musb) +{ + musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); + if (!musb->xceiv) { + pr_err("HS UDC: no transceiver configured\n"); + return -ENODEV; + } + + /* Silicon does not implement ConfigData register. + * Set dyn_fifo to avoid reading EP config from hardware. + */ + musb->dyn_fifo = true; + + musb->isr = jz4740_musb_interrupt; + + return 0; +} + +static int jz4740_musb_exit(struct musb *musb) +{ + usb_put_phy(musb->xceiv); + + return 0; +} + +static const struct musb_platform_ops jz4740_musb_ops = { + .init = jz4740_musb_init, + .exit = jz4740_musb_exit, +}; + +static int jz4740_probe(struct platform_device *pdev) +{ + struct musb_hdrc_platform_data *pdata = &jz4740_musb_platform_data; + struct platform_device *musb; + struct jz4740_glue *glue; + struct clk *clk; + int ret; + + glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); + if (!glue) + return -ENOMEM; + + musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); + if (!musb) { + dev_err(&pdev->dev, "failed to allocate musb device\n"); + return -ENOMEM; + } + + clk = devm_clk_get(&pdev->dev, "udc"); + if (IS_ERR(clk)) { + dev_err(&pdev->dev, "failed to get clock\n"); + ret = PTR_ERR(clk); + goto err_platform_device_put; + } + + ret = clk_prepare_enable(clk); + if (ret) { + dev_err(&pdev->dev, "failed to enable clock\n"); + goto err_platform_device_put; + } + + musb->dev.parent = &pdev->dev; + + glue->dev = &pdev->dev; + glue->musb = musb; + glue->clk = clk; + + pdata->platform_ops = &jz4740_musb_ops; + + platform_set_drvdata(pdev, glue); + + ret = platform_device_add_resources(musb, pdev->resource, + pdev->num_resources); + if (ret) { + dev_err(&pdev->dev, "failed to add resources\n"); + goto err_clk_disable; + } + + ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); + if (ret) { + dev_err(&pdev->dev, "failed to add platform_data\n"); + goto err_clk_disable; + } + + ret = platform_device_add(musb); + if (ret) { + dev_err(&pdev->dev, "failed to register musb device\n"); + goto err_clk_disable; + } + + return 0; + +err_clk_disable: + clk_disable_unprepare(clk); +err_platform_device_put: + platform_device_put(musb); + return ret; +} + +static int jz4740_remove(struct platform_device *pdev) +{ + struct jz4740_glue *glue = platform_get_drvdata(pdev); + + platform_device_unregister(glue->musb); + clk_disable_unprepare(glue->clk); + + return 0; +} + +static struct platform_driver jz4740_driver = { + .probe = jz4740_probe, + .remove = jz4740_remove, + .driver = { + .name = "musb-jz4740", + }, +}; + +MODULE_DESCRIPTION("JZ4740 MUSB Glue Layer"); +MODULE_AUTHOR("Apelete Seketeli <apelete@seketeli.net>"); +MODULE_LICENSE("GPL v2"); +module_platform_driver(jz4740_driver); diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 4d4499b8044..5942f002fa5 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -478,8 +478,8 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb, musb->port1_status |= (USB_PORT_STAT_C_SUSPEND << 16) | MUSB_PORT_STAT_RESUME; - musb->rh_timer = jiffies - + msecs_to_jiffies(20); + schedule_delayed_work( + &musb->finish_resume_work, 20); musb->xceiv->state = OTG_STATE_A_HOST; musb->is_active = 1; @@ -1813,6 +1813,21 @@ static void musb_free(struct musb *musb) musb_host_free(musb); } +static void musb_deassert_reset(struct work_struct *work) +{ + struct musb *musb; + unsigned long flags; + + musb = container_of(work, struct musb, deassert_reset_work.work); + + spin_lock_irqsave(&musb->lock, flags); + + if (musb->port1_status & USB_PORT_STAT_RESET) + musb_port_reset(musb, false); + + spin_unlock_irqrestore(&musb->lock, flags); +} + /* * Perform generic per-controller initialization. * @@ -1897,6 +1912,8 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) /* Init IRQ workqueue before request_irq */ INIT_WORK(&musb->irq_work, musb_irq_work); + INIT_DELAYED_WORK(&musb->deassert_reset_work, musb_deassert_reset); + INIT_DELAYED_WORK(&musb->finish_resume_work, musb_host_finish_resume); /* setup musb parts of the core (especially endpoints) */ status = musb_core_init(plat->config->multipoint @@ -1940,17 +1957,26 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) switch (musb->port_mode) { case MUSB_PORT_MODE_HOST: status = musb_host_setup(musb, plat->power); + if (status < 0) + goto fail3; + status = musb_platform_set_mode(musb, MUSB_HOST); break; case MUSB_PORT_MODE_GADGET: status = musb_gadget_setup(musb); + if (status < 0) + goto fail3; + status = musb_platform_set_mode(musb, MUSB_PERIPHERAL); break; case MUSB_PORT_MODE_DUAL_ROLE: status = musb_host_setup(musb, plat->power); if (status < 0) goto fail3; status = musb_gadget_setup(musb); - if (status) + if (status) { musb_host_cleanup(musb); + goto fail3; + } + status = musb_platform_set_mode(musb, MUSB_OTG); break; default: dev_err(dev, "unsupported port mode %d\n", musb->port_mode); @@ -1981,6 +2007,8 @@ fail4: fail3: cancel_work_sync(&musb->irq_work); + cancel_delayed_work_sync(&musb->finish_resume_work); + cancel_delayed_work_sync(&musb->deassert_reset_work); if (musb->dma_controller) dma_controller_destroy(musb->dma_controller); fail2_5: @@ -2044,6 +2072,8 @@ static int musb_remove(struct platform_device *pdev) dma_controller_destroy(musb->dma_controller); cancel_work_sync(&musb->irq_work); + cancel_delayed_work_sync(&musb->finish_resume_work); + cancel_delayed_work_sync(&musb->deassert_reset_work); musb_free(musb); device_init_wakeup(dev, 0); return 0; @@ -2216,16 +2246,28 @@ static int musb_suspend(struct device *dev) */ } + musb_save_context(musb); + spin_unlock_irqrestore(&musb->lock, flags); return 0; } static int musb_resume_noirq(struct device *dev) { - /* for static cmos like DaVinci, register values were preserved + struct musb *musb = dev_to_musb(dev); + + /* + * For static cmos like DaVinci, register values were preserved * unless for some reason the whole soc powered down or the USB * module got reset through the PSC (vs just being disabled). + * + * For the DSPS glue layer though, a full register restore has to + * be done. As it shouldn't harm other platforms, we do it + * unconditionally. */ + + musb_restore_context(musb); + return 0; } @@ -2283,19 +2325,4 @@ static struct platform_driver musb_driver = { .shutdown = musb_shutdown, }; -/*-------------------------------------------------------------------------*/ - -static int __init musb_init(void) -{ - if (usb_disabled()) - return 0; - - return platform_driver_register(&musb_driver); -} -module_init(musb_init); - -static void __exit musb_cleanup(void) -{ - platform_driver_unregister(&musb_driver); -} -module_exit(musb_cleanup); +module_platform_driver(musb_driver); diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 29f7cd7c796..7083e82776f 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -47,6 +47,7 @@ #include <linux/usb/otg.h> #include <linux/usb/musb.h> #include <linux/phy/phy.h> +#include <linux/workqueue.h> struct musb; struct musb_hw_ep; @@ -295,6 +296,8 @@ struct musb { irqreturn_t (*isr)(int, void *); struct work_struct irq_work; + struct delayed_work deassert_reset_work; + struct delayed_work finish_resume_work; u16 hwvers; u16 intrrxe; diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 1901f6fe580..593d3c96256 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -83,6 +83,8 @@ struct dsps_musb_wrapper { u16 coreintr_status; u16 phy_utmi; u16 mode; + u16 tx_mode; + u16 rx_mode; /* bit positions for control */ unsigned reset:5; @@ -106,10 +108,24 @@ struct dsps_musb_wrapper { /* bit positions for mode */ unsigned iddig:5; + unsigned iddig_mux:5; /* miscellaneous stuff */ u8 poll_seconds; }; +/* + * register shadow for suspend + */ +struct dsps_context { + u32 control; + u32 epintr; + u32 coreintr; + u32 phy_utmi; + u32 mode; + u32 tx_mode; + u32 rx_mode; +}; + /** * DSPS glue structure. */ @@ -119,6 +135,8 @@ struct dsps_glue { const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */ struct timer_list timer; /* otg_workaround timer */ unsigned long last_timer; /* last timer data for each instance */ + + struct dsps_context context; }; static void dsps_musb_try_idle(struct musb *musb, unsigned long timeout) @@ -341,8 +359,9 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) if (musb->int_tx || musb->int_rx || musb->int_usb) ret |= musb_interrupt(musb); - /* Poll for ID change */ - if (musb->xceiv->state == OTG_STATE_B_IDLE) + /* Poll for ID change in OTG port mode */ + if (musb->xceiv->state == OTG_STATE_B_IDLE && + musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) mod_timer(&glue->timer, jiffies + wrp->poll_seconds * HZ); out: spin_unlock_irqrestore(&musb->lock, flags); @@ -406,6 +425,54 @@ static int dsps_musb_exit(struct musb *musb) return 0; } +static int dsps_musb_set_mode(struct musb *musb, u8 mode) +{ + struct device *dev = musb->controller; + struct dsps_glue *glue = dev_get_drvdata(dev->parent); + const struct dsps_musb_wrapper *wrp = glue->wrp; + void __iomem *ctrl_base = musb->ctrl_base; + void __iomem *base = musb->mregs; + u32 reg; + + reg = dsps_readl(base, wrp->mode); + + switch (mode) { + case MUSB_HOST: + reg &= ~(1 << wrp->iddig); + + /* + * if we're setting mode to host-only or device-only, we're + * going to ignore whatever the PHY sends us and just force + * ID pin status by SW + */ + reg |= (1 << wrp->iddig_mux); + + dsps_writel(base, wrp->mode, reg); + dsps_writel(ctrl_base, wrp->phy_utmi, 0x02); + break; + case MUSB_PERIPHERAL: + reg |= (1 << wrp->iddig); + + /* + * if we're setting mode to host-only or device-only, we're + * going to ignore whatever the PHY sends us and just force + * ID pin status by SW + */ + reg |= (1 << wrp->iddig_mux); + + dsps_writel(base, wrp->mode, reg); + break; + case MUSB_OTG: + dsps_writel(base, wrp->phy_utmi, 0x02); + break; + default: + dev_err(glue->dev, "unsupported mode %d\n", mode); + return -EINVAL; + } + + return 0; +} + static struct musb_platform_ops dsps_ops = { .init = dsps_musb_init, .exit = dsps_musb_exit, @@ -414,6 +481,7 @@ static struct musb_platform_ops dsps_ops = { .disable = dsps_musb_disable, .try_idle = dsps_musb_try_idle, + .set_mode = dsps_musb_set_mode, }; static u64 musb_dmamask = DMA_BIT_MASK(32); @@ -507,6 +575,7 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue, config->num_eps = get_int_prop(dn, "mentor,num-eps"); config->ram_bits = get_int_prop(dn, "mentor,ram-bits"); + config->host_port_deassert_reset_at_resume = 1; pdata.mode = get_musb_port_mode(dev); /* DT keeps this entry in mA, musb expects it as per USB spec */ pdata.power = get_int_prop(dn, "mentor,power") / 2; @@ -605,9 +674,12 @@ static const struct dsps_musb_wrapper am33xx_driver_data = { .coreintr_status = 0x34, .phy_utmi = 0xe0, .mode = 0xe8, + .tx_mode = 0x70, + .rx_mode = 0x74, .reset = 0, .otg_disable = 21, .iddig = 8, + .iddig_mux = 7, .usb_shift = 0, .usb_mask = 0x1ff, .usb_bitmap = (0x1ff << 0), @@ -628,11 +700,52 @@ static const struct of_device_id musb_dsps_of_match[] = { }; MODULE_DEVICE_TABLE(of, musb_dsps_of_match); +#ifdef CONFIG_PM +static int dsps_suspend(struct device *dev) +{ + struct dsps_glue *glue = dev_get_drvdata(dev); + const struct dsps_musb_wrapper *wrp = glue->wrp; + struct musb *musb = platform_get_drvdata(glue->musb); + void __iomem *mbase = musb->ctrl_base; + + glue->context.control = dsps_readl(mbase, wrp->control); + glue->context.epintr = dsps_readl(mbase, wrp->epintr_set); + glue->context.coreintr = dsps_readl(mbase, wrp->coreintr_set); + glue->context.phy_utmi = dsps_readl(mbase, wrp->phy_utmi); + glue->context.mode = dsps_readl(mbase, wrp->mode); + glue->context.tx_mode = dsps_readl(mbase, wrp->tx_mode); + glue->context.rx_mode = dsps_readl(mbase, wrp->rx_mode); + + return 0; +} + +static int dsps_resume(struct device *dev) +{ + struct dsps_glue *glue = dev_get_drvdata(dev); + const struct dsps_musb_wrapper *wrp = glue->wrp; + struct musb *musb = platform_get_drvdata(glue->musb); + void __iomem *mbase = musb->ctrl_base; + + dsps_writel(mbase, wrp->control, glue->context.control); + dsps_writel(mbase, wrp->epintr_set, glue->context.epintr); + dsps_writel(mbase, wrp->coreintr_set, glue->context.coreintr); + dsps_writel(mbase, wrp->phy_utmi, glue->context.phy_utmi); + dsps_writel(mbase, wrp->mode, glue->context.mode); + dsps_writel(mbase, wrp->tx_mode, glue->context.tx_mode); + dsps_writel(mbase, wrp->rx_mode, glue->context.rx_mode); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(dsps_pm_ops, dsps_suspend, dsps_resume); + static struct platform_driver dsps_usbss_driver = { .probe = dsps_probe, .remove = dsps_remove, .driver = { .name = "musb-dsps", + .pm = &dsps_pm_ops, .of_match_table = musb_dsps_of_match, }, }; diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 32fb057c03f..d4aa779339f 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -1727,14 +1727,14 @@ init_peripheral_ep(struct musb *musb, struct musb_ep *ep, u8 epnum, int is_in) ep->end_point.name = ep->name; INIT_LIST_HEAD(&ep->end_point.ep_list); if (!epnum) { - ep->end_point.maxpacket = 64; + usb_ep_set_maxpacket_limit(&ep->end_point, 64); ep->end_point.ops = &musb_g_ep0_ops; musb->g.ep0 = &ep->end_point; } else { if (is_in) - ep->end_point.maxpacket = hw_ep->max_packet_sz_tx; + usb_ep_set_maxpacket_limit(&ep->end_point, hw_ep->max_packet_sz_tx); else - ep->end_point.maxpacket = hw_ep->max_packet_sz_rx; + usb_ep_set_maxpacket_limit(&ep->end_point, hw_ep->max_packet_sz_rx); ep->end_point.ops = &musb_ep_ops; list_add_tail(&ep->end_point.ep_list, &musb->g.ep_list); } @@ -2119,7 +2119,15 @@ __acquires(musb->lock) /* Normal reset, as B-Device; * or else after HNP, as A-Device */ - if (devctl & MUSB_DEVCTL_BDEVICE) { + if (!musb->g.is_otg) { + /* USB device controllers that are not OTG compatible + * may not have DEVCTL register in silicon. + * In that case, do not rely on devctl for setting + * peripheral mode. + */ + musb->xceiv->state = OTG_STATE_B_PERIPHERAL; + musb->g.is_a_peripheral = 0; + } else if (devctl & MUSB_DEVCTL_BDEVICE) { musb->xceiv->state = OTG_STATE_B_PERIPHERAL; musb->g.is_a_peripheral = 0; } else { diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index e2083757e87..01e7caf6f7b 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -2433,6 +2433,8 @@ static int musb_bus_suspend(struct usb_hcd *hcd) struct musb *musb = hcd_to_musb(hcd); u8 devctl; + musb_port_suspend(musb, true); + if (!is_host_active(musb)) return 0; @@ -2462,7 +2464,12 @@ static int musb_bus_suspend(struct usb_hcd *hcd) static int musb_bus_resume(struct usb_hcd *hcd) { - /* resuming child port does the work */ + struct musb *musb = hcd_to_musb(hcd); + + if (musb->config && + musb->config->host_port_deassert_reset_at_resume) + musb_port_reset(musb, false); + return 0; } diff --git a/drivers/usb/musb/musb_host.h b/drivers/usb/musb/musb_host.h index 960d73570b2..7bbf01bf4bb 100644 --- a/drivers/usb/musb/musb_host.h +++ b/drivers/usb/musb/musb_host.h @@ -92,6 +92,9 @@ extern void musb_host_rx(struct musb *, u8); extern void musb_root_disconnect(struct musb *musb); extern void musb_host_resume_root_hub(struct musb *musb); extern void musb_host_poke_root_hub(struct musb *musb); +extern void musb_port_suspend(struct musb *musb, bool do_suspend); +extern void musb_port_reset(struct musb *musb, bool do_reset); +extern void musb_host_finish_resume(struct work_struct *work); #else static inline struct musb *hcd_to_musb(struct usb_hcd *hcd) { @@ -121,6 +124,9 @@ static inline void musb_root_disconnect(struct musb *musb) {} static inline void musb_host_resume_root_hub(struct musb *musb) {} static inline void musb_host_poll_rh_status(struct musb *musb) {} static inline void musb_host_poke_root_hub(struct musb *musb) {} +static inline void musb_port_suspend(struct musb *musb, bool do_suspend) {} +static inline void musb_port_reset(struct musb *musb, bool do_reset) {} +static inline void musb_host_finish_resume(struct work_struct *work) {} #endif struct usb_hcd; diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index 9af6bba5eac..966cf95bb45 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -44,7 +44,38 @@ #include "musb_core.h" -static void musb_port_suspend(struct musb *musb, bool do_suspend) +void musb_host_finish_resume(struct work_struct *work) +{ + struct musb *musb; + unsigned long flags; + u8 power; + + musb = container_of(work, struct musb, finish_resume_work.work); + + spin_lock_irqsave(&musb->lock, flags); + + power = musb_readb(musb->mregs, MUSB_POWER); + power &= ~MUSB_POWER_RESUME; + dev_dbg(musb->controller, "root port resume stopped, power %02x\n", + power); + musb_writeb(musb->mregs, MUSB_POWER, power); + + /* + * ISSUE: DaVinci (RTL 1.300) disconnects after + * resume of high speed peripherals (but not full + * speed ones). + */ + musb->is_active = 1; + musb->port1_status &= ~(USB_PORT_STAT_SUSPEND | MUSB_PORT_STAT_RESUME); + musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; + usb_hcd_poll_rh_status(musb->hcd); + /* NOTE: it might really be A_WAIT_BCON ... */ + musb->xceiv->state = OTG_STATE_A_HOST; + + spin_unlock_irqrestore(&musb->lock, flags); +} + +void musb_port_suspend(struct musb *musb, bool do_suspend) { struct usb_otg *otg = musb->xceiv->otg; u8 power; @@ -105,11 +136,11 @@ static void musb_port_suspend(struct musb *musb, bool do_suspend) /* later, GetPortStatus will stop RESUME signaling */ musb->port1_status |= MUSB_PORT_STAT_RESUME; - musb->rh_timer = jiffies + msecs_to_jiffies(20); + schedule_delayed_work(&musb->finish_resume_work, 20); } } -static void musb_port_reset(struct musb *musb, bool do_reset) +void musb_port_reset(struct musb *musb, bool do_reset) { u8 power; void __iomem *mbase = musb->mregs; @@ -150,7 +181,7 @@ static void musb_port_reset(struct musb *musb, bool do_reset) musb->port1_status |= USB_PORT_STAT_RESET; musb->port1_status &= ~USB_PORT_STAT_ENABLE; - musb->rh_timer = jiffies + msecs_to_jiffies(50); + schedule_delayed_work(&musb->deassert_reset_work, 50); } else { dev_dbg(musb->controller, "root port reset stopped\n"); musb_writeb(mbase, MUSB_POWER, @@ -325,36 +356,6 @@ int musb_hub_control( if (wIndex != 1) goto error; - /* finish RESET signaling? */ - if ((musb->port1_status & USB_PORT_STAT_RESET) - && time_after_eq(jiffies, musb->rh_timer)) - musb_port_reset(musb, false); - - /* finish RESUME signaling? */ - if ((musb->port1_status & MUSB_PORT_STAT_RESUME) - && time_after_eq(jiffies, musb->rh_timer)) { - u8 power; - - power = musb_readb(musb->mregs, MUSB_POWER); - power &= ~MUSB_POWER_RESUME; - dev_dbg(musb->controller, "root port resume stopped, power %02x\n", - power); - musb_writeb(musb->mregs, MUSB_POWER, power); - - /* ISSUE: DaVinci (RTL 1.300) disconnects after - * resume of high speed peripherals (but not full - * speed ones). - */ - - musb->is_active = 1; - musb->port1_status &= ~(USB_PORT_STAT_SUSPEND - | MUSB_PORT_STAT_RESUME); - musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16; - usb_hcd_poll_rh_status(musb->hcd); - /* NOTE: it might really be A_WAIT_BCON ... */ - musb->xceiv->state = OTG_STATE_A_HOST; - } - put_unaligned(cpu_to_le32(musb->port1_status & ~MUSB_PORT_STAT_RESUME), (__le32 *) buf); diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c index 3700e971325..9aad00f11bd 100644 --- a/drivers/usb/musb/ux500_dma.c +++ b/drivers/usb/musb/ux500_dma.c @@ -336,7 +336,9 @@ static int ux500_dma_controller_start(struct ux500_dma_controller *controller) data ? data->dma_filter : NULL, - param_array[ch_num]); + param_array ? + param_array[ch_num] : + NULL); if (!ux500_channel->dma_chan) { ERR("Dma pipe allocation error dir=%d ch=%d\n", diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 2b41c636a52..7d1451d5bbe 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -6,6 +6,15 @@ menu "USB Physical Layer drivers" config USB_PHY def_bool n +config USB_OTG_FSM + tristate "USB 2.0 OTG FSM implementation" + depends on USB + select USB_OTG + select USB_PHY + help + Implements OTG Final State Machine as specified in On-The-Go + and Embedded Host Supplement to the USB Revision 2.0 Specification. + # # USB Transceiver Drivers # @@ -19,9 +28,8 @@ config AB8500_USB in host mode, low speed. config FSL_USB2_OTG - tristate "Freescale USB OTG Transceiver Driver" - depends on USB_EHCI_FSL && USB_FSL_USB2 && PM_RUNTIME - depends on USB + bool "Freescale USB OTG Transceiver Driver" + depends on USB_EHCI_FSL && USB_FSL_USB2 && USB_OTG_FSM && PM_RUNTIME select USB_OTG select USB_PHY help @@ -40,7 +48,16 @@ config ISP1301_OMAP Instruments OMAP processors. This driver can also be built as a module. If so, the module - will be called isp1301_omap. + will be called phy-isp1301-omap. + +config KEYSTONE_USB_PHY + tristate "Keystone USB PHY Driver" + depends on ARCH_KEYSTONE || COMPILE_TEST + select NOP_USB_XCEIV + help + Enable this to support Keystone USB phy. This driver provides + interface to interact with USB 2.0 and USB 3.0 PHY that is part + of the Keystone SOC. config MV_U3D_PHY bool "Marvell USB 3.0 PHY controller Driver" @@ -136,6 +153,31 @@ config USB_GPIO_VBUS optionally control of a D+ pullup GPIO as well as a VBUS current limit regulator. +config OMAP_OTG + tristate "OMAP USB OTG controller driver" + depends on ARCH_OMAP_OTG && EXTCON + help + Enable this to support some transceivers on OMAP1 platforms. OTG + controller is needed to switch between host and peripheral modes. + + This driver can also be built as a module. If so, the module + will be called phy-omap-otg. + +config TAHVO_USB + tristate "Tahvo USB transceiver driver" + depends on MFD_RETU && EXTCON + select USB_PHY + help + Enable this to support USB transceiver on Tahvo. This is used + at least on Nokia 770. + +config TAHVO_USB_HOST_BY_DEFAULT + depends on TAHVO_USB + boolean "Device in USB host mode by default" + help + Say Y here, if you want the device to enter USB host mode + by default on bootup. + config USB_ISP1301 tristate "NXP ISP1301 USB transceiver support" depends on USB || USB_GADGET @@ -147,7 +189,7 @@ config USB_ISP1301 and OTG drivers (to be selected separately). To compile this driver as a module, choose M here: the - module will be called isp1301. + module will be called phy-isp1301. config USB_MSM_OTG tristate "OTG support for Qualcomm on-chip USB controller" diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index 022c1da7fb7..be58adae349 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -3,18 +3,20 @@ # obj-$(CONFIG_USB_PHY) += phy.o obj-$(CONFIG_OF) += of.o +obj-$(CONFIG_USB_OTG_FSM) += phy-fsm-usb.o # transceiver drivers, keep the list sorted obj-$(CONFIG_AB8500_USB) += phy-ab8500-usb.o -phy-fsl-usb2-objs := phy-fsl-usb.o phy-fsm-usb.o -obj-$(CONFIG_FSL_USB2_OTG) += phy-fsl-usb2.o +obj-$(CONFIG_FSL_USB2_OTG) += phy-fsl-usb.o obj-$(CONFIG_ISP1301_OMAP) += phy-isp1301-omap.o obj-$(CONFIG_MV_U3D_PHY) += phy-mv-u3d-usb.o obj-$(CONFIG_NOP_USB_XCEIV) += phy-generic.o +obj-$(CONFIG_TAHVO_USB) += phy-tahvo.o obj-$(CONFIG_OMAP_CONTROL_USB) += phy-omap-control.o obj-$(CONFIG_AM335X_CONTROL_USB) += phy-am335x-control.o obj-$(CONFIG_AM335X_PHY_USB) += phy-am335x.o +obj-$(CONFIG_OMAP_OTG) += phy-omap-otg.o obj-$(CONFIG_OMAP_USB3) += phy-omap-usb3.o obj-$(CONFIG_SAMSUNG_USBPHY) += phy-samsung-usb.o obj-$(CONFIG_SAMSUNG_USB2PHY) += phy-samsung-usb2.o @@ -30,3 +32,4 @@ obj-$(CONFIG_USB_RCAR_PHY) += phy-rcar-usb.o obj-$(CONFIG_USB_RCAR_GEN2_PHY) += phy-rcar-gen2-usb.o obj-$(CONFIG_USB_ULPI) += phy-ulpi.o obj-$(CONFIG_USB_ULPI_VIEWPORT) += phy-ulpi-viewport.o +obj-$(CONFIG_KEYSTONE_USB_PHY) += phy-keystone.o diff --git a/drivers/usb/phy/phy-ab8500-usb.c b/drivers/usb/phy/phy-ab8500-usb.c index 087402350b6..11ab2c45e46 100644 --- a/drivers/usb/phy/phy-ab8500-usb.c +++ b/drivers/usb/phy/phy-ab8500-usb.c @@ -1415,8 +1415,6 @@ static int ab8500_usb_probe(struct platform_device *pdev) platform_set_drvdata(pdev, ab); - ATOMIC_INIT_NOTIFIER_HEAD(&ab->phy.notifier); - /* all: Disable phy when called from set_host and set_peripheral */ INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work); diff --git a/drivers/usb/phy/phy-am335x-control.c b/drivers/usb/phy/phy-am335x-control.c index 634f49acd20..d75196ad5f2 100644 --- a/drivers/usb/phy/phy-am335x-control.c +++ b/drivers/usb/phy/phy-am335x-control.c @@ -3,11 +3,7 @@ #include <linux/err.h> #include <linux/of.h> #include <linux/io.h> - -struct phy_control { - void (*phy_power)(struct phy_control *phy_ctrl, u32 id, bool on); - void (*phy_wkup)(struct phy_control *phy_ctrl, u32 id, bool on); -}; +#include "am35x-phy-control.h" struct am335x_control_usb { struct device *dev; diff --git a/drivers/usb/phy/phy-am335x.c b/drivers/usb/phy/phy-am335x.c index 0e3c60cb669..12fc3468a01 100644 --- a/drivers/usb/phy/phy-am335x.c +++ b/drivers/usb/phy/phy-am335x.c @@ -63,6 +63,19 @@ static int am335x_phy_probe(struct platform_device *pdev) am_phy->usb_phy_gen.phy.shutdown = am335x_shutdown; platform_set_drvdata(pdev, am_phy); + device_init_wakeup(dev, true); + + /* + * If we leave PHY wakeup enabled then AM33XX wakes up + * immediately from DS0. To avoid this we mark dev->power.can_wakeup + * to false. The same is checked in suspend routine to decide + * on whether to enable PHY wakeup or not. + * PHY wakeup works fine in standby mode, there by allowing us to + * handle remote wakeup, wakeup on disconnect and connect. + */ + + device_set_wakeup_enable(dev, false); + phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, false); return 0; } @@ -75,38 +88,48 @@ static int am335x_phy_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM_RUNTIME - -static int am335x_phy_runtime_suspend(struct device *dev) +#ifdef CONFIG_PM_SLEEP +static int am335x_phy_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct am335x_phy *am_phy = platform_get_drvdata(pdev); + /* + * Enable phy wakeup only if dev->power.can_wakeup is true. + * Make sure to enable wakeup to support remote wakeup in + * standby mode ( same is not supported in OFF(DS0) mode). + * Enable it by doing + * echo enabled > /sys/bus/platform/devices/<usb-phy-id>/power/wakeup + */ + if (device_may_wakeup(dev)) phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, true); + phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, false); + return 0; } -static int am335x_phy_runtime_resume(struct device *dev) +static int am335x_phy_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct am335x_phy *am_phy = platform_get_drvdata(pdev); phy_ctrl_power(am_phy->phy_ctrl, am_phy->id, true); + if (device_may_wakeup(dev)) phy_ctrl_wkup(am_phy->phy_ctrl, am_phy->id, false); + return 0; } static const struct dev_pm_ops am335x_pm_ops = { - SET_RUNTIME_PM_OPS(am335x_phy_runtime_suspend, - am335x_phy_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(am335x_phy_suspend, am335x_phy_resume) }; -#define DEV_PM_OPS (&am335x_pm_ops) +#define DEV_PM_OPS (&am335x_pm_ops) #else -#define DEV_PM_OPS NULL +#define DEV_PM_OPS NULL #endif static const struct of_device_id am335x_phy_ids[] = { diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c index 7f3c73b967c..62d5af22efa 100644 --- a/drivers/usb/phy/phy-fsl-usb.c +++ b/drivers/usb/phy/phy-fsl-usb.c @@ -848,7 +848,7 @@ static int fsl_otg_conf(struct platform_device *pdev) pr_info("Couldn't init OTG timers\n"); goto err; } - spin_lock_init(&fsl_otg_tc->fsm.lock); + mutex_init(&fsl_otg_tc->fsm.lock); /* Set OTG state machine operations */ fsl_otg_tc->fsm.ops = &fsl_otg_ops; @@ -1017,10 +1017,9 @@ static int show_fsl_usb2_otg_state(struct device *dev, struct otg_fsm *fsm = &fsl_otg_dev->fsm; char *next = buf; unsigned size = PAGE_SIZE; - unsigned long flags; int t; - spin_lock_irqsave(&fsm->lock, flags); + mutex_lock(&fsm->lock); /* basic driver infomation */ t = scnprintf(next, size, @@ -1088,7 +1087,7 @@ static int show_fsl_usb2_otg_state(struct device *dev, size -= t; next += t; - spin_unlock_irqrestore(&fsm->lock, flags); + mutex_unlock(&fsm->lock); return PAGE_SIZE - size; } diff --git a/drivers/usb/phy/phy-fsl-usb.h b/drivers/usb/phy/phy-fsl-usb.h index 7365170a2f2..5986c96354d 100644 --- a/drivers/usb/phy/phy-fsl-usb.h +++ b/drivers/usb/phy/phy-fsl-usb.h @@ -15,7 +15,7 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include "phy-fsm-usb.h" +#include <linux/usb/otg-fsm.h> #include <linux/usb/otg.h> #include <linux/ioctl.h> diff --git a/drivers/usb/phy/phy-fsm-usb.c b/drivers/usb/phy/phy-fsm-usb.c index 329c2d2f859..7aa314ef4a8 100644 --- a/drivers/usb/phy/phy-fsm-usb.c +++ b/drivers/usb/phy/phy-fsm-usb.c @@ -23,13 +23,12 @@ #include <linux/kernel.h> #include <linux/types.h> -#include <linux/spinlock.h> +#include <linux/mutex.h> #include <linux/delay.h> #include <linux/usb.h> #include <linux/usb/gadget.h> #include <linux/usb/otg.h> - -#include "phy-fsm-usb.h" +#include <linux/usb/otg-fsm.h> /* Change USB protocol when there is a protocol change */ static int otg_set_protocol(struct otg_fsm *fsm, int protocol) @@ -65,7 +64,7 @@ static int otg_set_protocol(struct otg_fsm *fsm, int protocol) static int state_changed; /* Called when leaving a state. Do state clean up jobs here */ -void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state) +static void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state) { switch (old_state) { case OTG_STATE_B_IDLE: @@ -122,7 +121,7 @@ void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state) } /* Called when entering a state */ -int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state) +static int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state) { state_changed = 1; if (fsm->otg->phy->state == new_state) @@ -245,9 +244,8 @@ int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state) int otg_statemachine(struct otg_fsm *fsm) { enum usb_otg_state state; - unsigned long flags; - spin_lock_irqsave(&fsm->lock, flags); + mutex_lock(&fsm->lock); state = fsm->otg->phy->state; state_changed = 0; @@ -359,7 +357,7 @@ int otg_statemachine(struct otg_fsm *fsm) default: break; } - spin_unlock_irqrestore(&fsm->lock, flags); + mutex_unlock(&fsm->lock); VDBG("quit statemachine, changed = %d\n", state_changed); return state_changed; diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c index aa6d37b3378..bb394980532 100644 --- a/drivers/usb/phy/phy-generic.c +++ b/drivers/usb/phy/phy-generic.c @@ -241,7 +241,6 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_gen_xceiv *nop, nop->phy.otg->set_host = nop_set_host; nop->phy.otg->set_peripheral = nop_set_peripheral; - ATOMIC_INIT_NOTIFIER_HEAD(&nop->phy.notifier); return 0; } EXPORT_SYMBOL_GPL(usb_phy_gen_create_phy); diff --git a/drivers/usb/phy/phy-gpio-vbus-usb.c b/drivers/usb/phy/phy-gpio-vbus-usb.c index 02799a5efcd..69462e09d01 100644 --- a/drivers/usb/phy/phy-gpio-vbus-usb.c +++ b/drivers/usb/phy/phy-gpio-vbus-usb.c @@ -314,8 +314,6 @@ static int gpio_vbus_probe(struct platform_device *pdev) goto err_irq; } - ATOMIC_INIT_NOTIFIER_HEAD(&gpio_vbus->phy.notifier); - INIT_DELAYED_WORK(&gpio_vbus->work, gpio_vbus_work); gpio_vbus->vbus_draw = regulator_get(&pdev->dev, "vbus_draw"); diff --git a/drivers/usb/phy/phy-isp1301-omap.c b/drivers/usb/phy/phy-isp1301-omap.c index d3a5160e4cc..6e146d723b3 100644 --- a/drivers/usb/phy/phy-isp1301-omap.c +++ b/drivers/usb/phy/phy-isp1301-omap.c @@ -1277,7 +1277,7 @@ isp1301_set_host(struct usb_otg *otg, struct usb_bus *host) { struct isp1301 *isp = container_of(otg->phy, struct isp1301, phy); - if (!otg || isp != the_transceiver) + if (isp != the_transceiver) return -ENODEV; if (!host) { @@ -1333,7 +1333,7 @@ isp1301_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget) { struct isp1301 *isp = container_of(otg->phy, struct isp1301, phy); - if (!otg || isp != the_transceiver) + if (isp != the_transceiver) return -ENODEV; if (!gadget) { @@ -1414,8 +1414,7 @@ isp1301_start_srp(struct usb_otg *otg) struct isp1301 *isp = container_of(otg->phy, struct isp1301, phy); u32 otg_ctrl; - if (!otg || isp != the_transceiver - || isp->phy.state != OTG_STATE_B_IDLE) + if (isp != the_transceiver || isp->phy.state != OTG_STATE_B_IDLE) return -ENODEV; otg_ctrl = omap_readl(OTG_CTRL); @@ -1442,7 +1441,7 @@ isp1301_start_hnp(struct usb_otg *otg) struct isp1301 *isp = container_of(otg->phy, struct isp1301, phy); u32 l; - if (!otg || isp != the_transceiver) + if (isp != the_transceiver) return -ENODEV; if (otg->default_a && (otg->host == NULL || !otg->host->b_hnp_enable)) return -ENOTCONN; diff --git a/drivers/usb/phy/phy-keystone.c b/drivers/usb/phy/phy-keystone.c new file mode 100644 index 00000000000..d762003896c --- /dev/null +++ b/drivers/usb/phy/phy-keystone.c @@ -0,0 +1,136 @@ +/* + * phy-keystone - USB PHY, talking to dwc3 controller in Keystone. + * + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Author: WingMan Kwok <w-kwok2@ti.com> + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/usb/usb_phy_gen_xceiv.h> +#include <linux/io.h> +#include <linux/of.h> + +#include "phy-generic.h" + +/* USB PHY control register offsets */ +#define USB_PHY_CTL_UTMI 0x0000 +#define USB_PHY_CTL_PIPE 0x0004 +#define USB_PHY_CTL_PARAM_1 0x0008 +#define USB_PHY_CTL_PARAM_2 0x000c +#define USB_PHY_CTL_CLOCK 0x0010 +#define USB_PHY_CTL_PLL 0x0014 + +#define PHY_REF_SSP_EN BIT(29) + +struct keystone_usbphy { + struct usb_phy_gen_xceiv usb_phy_gen; + void __iomem *phy_ctrl; +}; + +static inline u32 keystone_usbphy_readl(void __iomem *base, u32 offset) +{ + return readl(base + offset); +} + +static inline void keystone_usbphy_writel(void __iomem *base, + u32 offset, u32 value) +{ + writel(value, base + offset); +} + +static int keystone_usbphy_init(struct usb_phy *phy) +{ + struct keystone_usbphy *k_phy = dev_get_drvdata(phy->dev); + u32 val; + + val = keystone_usbphy_readl(k_phy->phy_ctrl, USB_PHY_CTL_CLOCK); + keystone_usbphy_writel(k_phy->phy_ctrl, USB_PHY_CTL_CLOCK, + val | PHY_REF_SSP_EN); + return 0; +} + +static void keystone_usbphy_shutdown(struct usb_phy *phy) +{ + struct keystone_usbphy *k_phy = dev_get_drvdata(phy->dev); + u32 val; + + val = keystone_usbphy_readl(k_phy->phy_ctrl, USB_PHY_CTL_CLOCK); + keystone_usbphy_writel(k_phy->phy_ctrl, USB_PHY_CTL_CLOCK, + val &= ~PHY_REF_SSP_EN); +} + +static int keystone_usbphy_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct keystone_usbphy *k_phy; + struct resource *res; + int ret; + + k_phy = devm_kzalloc(dev, sizeof(*k_phy), GFP_KERNEL); + if (!k_phy) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + k_phy->phy_ctrl = devm_ioremap_resource(dev, res); + if (IS_ERR(k_phy->phy_ctrl)) + return PTR_ERR(k_phy->phy_ctrl); + + ret = usb_phy_gen_create_phy(dev, &k_phy->usb_phy_gen, NULL); + if (ret) + return ret; + + k_phy->usb_phy_gen.phy.init = keystone_usbphy_init; + k_phy->usb_phy_gen.phy.shutdown = keystone_usbphy_shutdown; + + platform_set_drvdata(pdev, k_phy); + + ret = usb_add_phy_dev(&k_phy->usb_phy_gen.phy); + if (ret) + return ret; + + return 0; +} + +static int keystone_usbphy_remove(struct platform_device *pdev) +{ + struct keystone_usbphy *k_phy = platform_get_drvdata(pdev); + + usb_remove_phy(&k_phy->usb_phy_gen.phy); + + return 0; +} + +static const struct of_device_id keystone_usbphy_ids[] = { + { .compatible = "ti,keystone-usbphy" }, + { } +}; +MODULE_DEVICE_TABLE(of, keystone_usbphy_ids); + +static struct platform_driver keystone_usbphy_driver = { + .probe = keystone_usbphy_probe, + .remove = keystone_usbphy_remove, + .driver = { + .name = "keystone-usbphy", + .owner = THIS_MODULE, + .of_match_table = keystone_usbphy_ids, + }, +}; + +module_platform_driver(keystone_usbphy_driver); + +MODULE_ALIAS("platform:keystone-usbphy"); +MODULE_AUTHOR("Texas Instruments Inc."); +MODULE_DESCRIPTION("Keystone USB phy driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index 545844b7e79..b42897b6474 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -63,9 +63,13 @@ static int mxs_phy_hw_init(struct mxs_phy *mxs_phy) static int mxs_phy_init(struct usb_phy *phy) { + int ret; struct mxs_phy *mxs_phy = to_mxs_phy(phy); - clk_prepare_enable(mxs_phy->clk); + ret = clk_prepare_enable(mxs_phy->clk); + if (ret) + return ret; + return mxs_phy_hw_init(mxs_phy); } @@ -81,6 +85,7 @@ static void mxs_phy_shutdown(struct usb_phy *phy) static int mxs_phy_suspend(struct usb_phy *x, int suspend) { + int ret; struct mxs_phy *mxs_phy = to_mxs_phy(x); if (suspend) { @@ -89,7 +94,9 @@ static int mxs_phy_suspend(struct usb_phy *x, int suspend) x->io_priv + HW_USBPHY_CTRL_SET); clk_disable_unprepare(mxs_phy->clk); } else { - clk_prepare_enable(mxs_phy->clk); + ret = clk_prepare_enable(mxs_phy->clk); + if (ret) + return ret; writel(BM_USBPHY_CTRL_CLKGATE, x->io_priv + HW_USBPHY_CTRL_CLR); writel(0, x->io_priv + HW_USBPHY_PWD); @@ -160,8 +167,6 @@ static int mxs_phy_probe(struct platform_device *pdev) mxs_phy->phy.notify_disconnect = mxs_phy_on_disconnect; mxs_phy->phy.type = USB_PHY_TYPE_USB2; - ATOMIC_INIT_NOTIFIER_HEAD(&mxs_phy->phy.notifier); - mxs_phy->clk = clk; platform_set_drvdata(pdev, mxs_phy); diff --git a/drivers/usb/phy/phy-omap-control.c b/drivers/usb/phy/phy-omap-control.c index 09c5ace1edd..e7253182e47 100644 --- a/drivers/usb/phy/phy-omap-control.c +++ b/drivers/usb/phy/phy-omap-control.c @@ -84,6 +84,20 @@ void omap_control_usb_phy_power(struct device *dev, int on) else val |= OMAP_CTRL_USB2_PHY_PD; break; + + case OMAP_CTRL_TYPE_AM437USB2: + if (on) { + val &= ~(AM437X_CTRL_USB2_PHY_PD | + AM437X_CTRL_USB2_OTG_PD); + val |= (AM437X_CTRL_USB2_OTGVDET_EN | + AM437X_CTRL_USB2_OTGSESSEND_EN); + } else { + val &= ~(AM437X_CTRL_USB2_OTGVDET_EN | + AM437X_CTRL_USB2_OTGSESSEND_EN); + val |= (AM437X_CTRL_USB2_PHY_PD | + AM437X_CTRL_USB2_OTG_PD); + } + break; default: dev_err(dev, "%s: type %d not recognized\n", __func__, control_usb->type); @@ -197,6 +211,7 @@ static const enum omap_control_usb_type otghs_data = OMAP_CTRL_TYPE_OTGHS; static const enum omap_control_usb_type usb2_data = OMAP_CTRL_TYPE_USB2; static const enum omap_control_usb_type pipe3_data = OMAP_CTRL_TYPE_PIPE3; static const enum omap_control_usb_type dra7usb2_data = OMAP_CTRL_TYPE_DRA7USB2; +static const enum omap_control_usb_type am437usb2_data = OMAP_CTRL_TYPE_AM437USB2; static const struct of_device_id omap_control_usb_id_table[] = { { @@ -215,6 +230,10 @@ static const struct of_device_id omap_control_usb_id_table[] = { .compatible = "ti,control-phy-dra7usb2", .data = &dra7usb2_data, }, + { + .compatible = "ti,control-phy-am437usb2", + .data = &am437usb2_data, + }, {}, }; MODULE_DEVICE_TABLE(of, omap_control_usb_id_table); diff --git a/drivers/usb/phy/phy-omap-otg.c b/drivers/usb/phy/phy-omap-otg.c new file mode 100644 index 00000000000..11598cdb318 --- /dev/null +++ b/drivers/usb/phy/phy-omap-otg.c @@ -0,0 +1,169 @@ +/* + * OMAP OTG controller driver + * + * Based on code from tahvo-usb.c and isp1301_omap.c drivers. + * + * Copyright (C) 2005-2006 Nokia Corporation + * Copyright (C) 2004 Texas Instruments + * Copyright (C) 2004 David Brownell + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of this + * archive for more details. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/io.h> +#include <linux/err.h> +#include <linux/extcon.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/platform_data/usb-omap1.h> + +struct otg_device { + void __iomem *base; + bool id; + bool vbus; + struct extcon_specific_cable_nb vbus_dev; + struct extcon_specific_cable_nb id_dev; + struct notifier_block vbus_nb; + struct notifier_block id_nb; +}; + +#define OMAP_OTG_CTRL 0x0c +#define OMAP_OTG_ASESSVLD (1 << 20) +#define OMAP_OTG_BSESSEND (1 << 19) +#define OMAP_OTG_BSESSVLD (1 << 18) +#define OMAP_OTG_VBUSVLD (1 << 17) +#define OMAP_OTG_ID (1 << 16) +#define OMAP_OTG_XCEIV_OUTPUTS \ + (OMAP_OTG_ASESSVLD | OMAP_OTG_BSESSEND | OMAP_OTG_BSESSVLD | \ + OMAP_OTG_VBUSVLD | OMAP_OTG_ID) + +static void omap_otg_ctrl(struct otg_device *otg_dev, u32 outputs) +{ + u32 l; + + l = readl(otg_dev->base + OMAP_OTG_CTRL); + l &= ~OMAP_OTG_XCEIV_OUTPUTS; + l |= outputs; + writel(l, otg_dev->base + OMAP_OTG_CTRL); +} + +static void omap_otg_set_mode(struct otg_device *otg_dev) +{ + if (!otg_dev->id && otg_dev->vbus) + /* Set B-session valid. */ + omap_otg_ctrl(otg_dev, OMAP_OTG_ID | OMAP_OTG_BSESSVLD); + else if (otg_dev->vbus) + /* Set A-session valid. */ + omap_otg_ctrl(otg_dev, OMAP_OTG_ASESSVLD); + else if (!otg_dev->id) + /* Set B-session end to indicate no VBUS. */ + omap_otg_ctrl(otg_dev, OMAP_OTG_ID | OMAP_OTG_BSESSEND); +} + +static int omap_otg_id_notifier(struct notifier_block *nb, + unsigned long event, void *ptr) +{ + struct otg_device *otg_dev = container_of(nb, struct otg_device, id_nb); + + otg_dev->id = event; + omap_otg_set_mode(otg_dev); + + return NOTIFY_DONE; +} + +static int omap_otg_vbus_notifier(struct notifier_block *nb, + unsigned long event, void *ptr) +{ + struct otg_device *otg_dev = container_of(nb, struct otg_device, + vbus_nb); + + otg_dev->vbus = event; + omap_otg_set_mode(otg_dev); + + return NOTIFY_DONE; +} + +static int omap_otg_probe(struct platform_device *pdev) +{ + const struct omap_usb_config *config = pdev->dev.platform_data; + struct otg_device *otg_dev; + struct extcon_dev *extcon; + int ret; + u32 rev; + + if (!config || !config->extcon) + return -ENODEV; + + extcon = extcon_get_extcon_dev(config->extcon); + if (!extcon) + return -EPROBE_DEFER; + + otg_dev = devm_kzalloc(&pdev->dev, sizeof(*otg_dev), GFP_KERNEL); + if (!otg_dev) + return -ENOMEM; + + otg_dev->base = devm_ioremap_resource(&pdev->dev, &pdev->resource[0]); + if (IS_ERR(otg_dev->base)) + return PTR_ERR(otg_dev->base); + + otg_dev->id_nb.notifier_call = omap_otg_id_notifier; + otg_dev->vbus_nb.notifier_call = omap_otg_vbus_notifier; + + ret = extcon_register_interest(&otg_dev->id_dev, config->extcon, + "USB-HOST", &otg_dev->id_nb); + if (ret) + return ret; + + ret = extcon_register_interest(&otg_dev->vbus_dev, config->extcon, + "USB", &otg_dev->vbus_nb); + if (ret) { + extcon_unregister_interest(&otg_dev->id_dev); + return ret; + } + + otg_dev->id = extcon_get_cable_state(extcon, "USB-HOST"); + otg_dev->vbus = extcon_get_cable_state(extcon, "USB"); + omap_otg_set_mode(otg_dev); + + rev = readl(otg_dev->base); + + dev_info(&pdev->dev, + "OMAP USB OTG controller rev %d.%d (%s, id=%d, vbus=%d)\n", + (rev >> 4) & 0xf, rev & 0xf, config->extcon, otg_dev->id, + otg_dev->vbus); + + return 0; +} + +static int omap_otg_remove(struct platform_device *pdev) +{ + struct otg_device *otg_dev = platform_get_drvdata(pdev); + + extcon_unregister_interest(&otg_dev->id_dev); + extcon_unregister_interest(&otg_dev->vbus_dev); + + return 0; +} + +static struct platform_driver omap_otg_driver = { + .probe = omap_otg_probe, + .remove = omap_otg_remove, + .driver = { + .owner = THIS_MODULE, + .name = "omap_otg", + }, +}; +module_platform_driver(omap_otg_driver); + +MODULE_DESCRIPTION("OMAP USB OTG controller driver"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Aaro Koskinen <aaro.koskinen@iki.fi>"); diff --git a/drivers/usb/phy/phy-rcar-gen2-usb.c b/drivers/usb/phy/phy-rcar-gen2-usb.c index db3ab34cddb..551e0a6c0e2 100644 --- a/drivers/usb/phy/phy-rcar-gen2-usb.c +++ b/drivers/usb/phy/phy-rcar-gen2-usb.c @@ -213,7 +213,7 @@ static int rcar_gen2_usb_phy_probe(struct platform_device *pdev) priv->phy.shutdown = rcar_gen2_usb_phy_shutdown; priv->phy.set_suspend = rcar_gen2_usb_phy_set_suspend; - retval = usb_add_phy(&priv->phy, USB_PHY_TYPE_USB2); + retval = usb_add_phy_dev(&priv->phy); if (retval < 0) { dev_err(dev, "Failed to add USB phy\n"); return retval; diff --git a/drivers/usb/phy/phy-tahvo.c b/drivers/usb/phy/phy-tahvo.c new file mode 100644 index 00000000000..cc61ee44b91 --- /dev/null +++ b/drivers/usb/phy/phy-tahvo.c @@ -0,0 +1,457 @@ +/* + * Tahvo USB transceiver driver + * + * Copyright (C) 2005-2006 Nokia Corporation + * + * Parts copied from isp1301_omap.c. + * Copyright (C) 2004 Texas Instruments + * Copyright (C) 2004 David Brownell + * + * Original driver written by Juha Yrjölä, Tony Lindgren and Timo Teräs. + * Modified for Retu/Tahvo MFD by Aaro Koskinen. + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of this + * archive for more details. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/io.h> +#include <linux/clk.h> +#include <linux/usb.h> +#include <linux/extcon.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/usb/otg.h> +#include <linux/mfd/retu.h> +#include <linux/usb/gadget.h> +#include <linux/platform_device.h> + +#define DRIVER_NAME "tahvo-usb" + +#define TAHVO_REG_IDSR 0x02 +#define TAHVO_REG_USBR 0x06 + +#define USBR_SLAVE_CONTROL (1 << 8) +#define USBR_VPPVIO_SW (1 << 7) +#define USBR_SPEED (1 << 6) +#define USBR_REGOUT (1 << 5) +#define USBR_MASTER_SW2 (1 << 4) +#define USBR_MASTER_SW1 (1 << 3) +#define USBR_SLAVE_SW (1 << 2) +#define USBR_NSUSPEND (1 << 1) +#define USBR_SEMODE (1 << 0) + +#define TAHVO_MODE_HOST 0 +#define TAHVO_MODE_PERIPHERAL 1 + +struct tahvo_usb { + struct platform_device *pt_dev; + struct usb_phy phy; + int vbus_state; + struct mutex serialize; + struct clk *ick; + int irq; + int tahvo_mode; + struct extcon_dev extcon; +}; + +static const char *tahvo_cable[] = { + "USB-HOST", + "USB", + NULL, +}; + +static ssize_t vbus_state_show(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct tahvo_usb *tu = dev_get_drvdata(device); + return sprintf(buf, "%s\n", tu->vbus_state ? "on" : "off"); +} +static DEVICE_ATTR(vbus, 0444, vbus_state_show, NULL); + +static void check_vbus_state(struct tahvo_usb *tu) +{ + struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent); + int reg, prev_state; + + reg = retu_read(rdev, TAHVO_REG_IDSR); + if (reg & TAHVO_STAT_VBUS) { + switch (tu->phy.state) { + case OTG_STATE_B_IDLE: + /* Enable the gadget driver */ + if (tu->phy.otg->gadget) + usb_gadget_vbus_connect(tu->phy.otg->gadget); + tu->phy.state = OTG_STATE_B_PERIPHERAL; + break; + case OTG_STATE_A_IDLE: + /* + * Session is now valid assuming the USB hub is driving + * Vbus. + */ + tu->phy.state = OTG_STATE_A_HOST; + break; + default: + break; + } + dev_info(&tu->pt_dev->dev, "USB cable connected\n"); + } else { + switch (tu->phy.state) { + case OTG_STATE_B_PERIPHERAL: + if (tu->phy.otg->gadget) + usb_gadget_vbus_disconnect(tu->phy.otg->gadget); + tu->phy.state = OTG_STATE_B_IDLE; + break; + case OTG_STATE_A_HOST: + tu->phy.state = OTG_STATE_A_IDLE; + break; + default: + break; + } + dev_info(&tu->pt_dev->dev, "USB cable disconnected\n"); + } + + prev_state = tu->vbus_state; + tu->vbus_state = reg & TAHVO_STAT_VBUS; + if (prev_state != tu->vbus_state) { + extcon_set_cable_state(&tu->extcon, "USB", tu->vbus_state); + sysfs_notify(&tu->pt_dev->dev.kobj, NULL, "vbus_state"); + } +} + +static void tahvo_usb_become_host(struct tahvo_usb *tu) +{ + struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent); + + extcon_set_cable_state(&tu->extcon, "USB-HOST", true); + + /* Power up the transceiver in USB host mode */ + retu_write(rdev, TAHVO_REG_USBR, USBR_REGOUT | USBR_NSUSPEND | + USBR_MASTER_SW2 | USBR_MASTER_SW1); + tu->phy.state = OTG_STATE_A_IDLE; + + check_vbus_state(tu); +} + +static void tahvo_usb_stop_host(struct tahvo_usb *tu) +{ + tu->phy.state = OTG_STATE_A_IDLE; +} + +static void tahvo_usb_become_peripheral(struct tahvo_usb *tu) +{ + struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent); + + extcon_set_cable_state(&tu->extcon, "USB-HOST", false); + + /* Power up transceiver and set it in USB peripheral mode */ + retu_write(rdev, TAHVO_REG_USBR, USBR_SLAVE_CONTROL | USBR_REGOUT | + USBR_NSUSPEND | USBR_SLAVE_SW); + tu->phy.state = OTG_STATE_B_IDLE; + + check_vbus_state(tu); +} + +static void tahvo_usb_stop_peripheral(struct tahvo_usb *tu) +{ + if (tu->phy.otg->gadget) + usb_gadget_vbus_disconnect(tu->phy.otg->gadget); + tu->phy.state = OTG_STATE_B_IDLE; +} + +static void tahvo_usb_power_off(struct tahvo_usb *tu) +{ + struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent); + + /* Disable gadget controller if any */ + if (tu->phy.otg->gadget) + usb_gadget_vbus_disconnect(tu->phy.otg->gadget); + + /* Power off transceiver */ + retu_write(rdev, TAHVO_REG_USBR, 0); + tu->phy.state = OTG_STATE_UNDEFINED; +} + +static int tahvo_usb_set_suspend(struct usb_phy *dev, int suspend) +{ + struct tahvo_usb *tu = container_of(dev, struct tahvo_usb, phy); + struct retu_dev *rdev = dev_get_drvdata(tu->pt_dev->dev.parent); + u16 w; + + dev_dbg(&tu->pt_dev->dev, "%s\n", __func__); + + w = retu_read(rdev, TAHVO_REG_USBR); + if (suspend) + w &= ~USBR_NSUSPEND; + else + w |= USBR_NSUSPEND; + retu_write(rdev, TAHVO_REG_USBR, w); + + return 0; +} + +static int tahvo_usb_set_host(struct usb_otg *otg, struct usb_bus *host) +{ + struct tahvo_usb *tu = container_of(otg->phy, struct tahvo_usb, phy); + + dev_dbg(&tu->pt_dev->dev, "%s %p\n", __func__, host); + + mutex_lock(&tu->serialize); + + if (host == NULL) { + if (tu->tahvo_mode == TAHVO_MODE_HOST) + tahvo_usb_power_off(tu); + otg->host = NULL; + mutex_unlock(&tu->serialize); + return 0; + } + + if (tu->tahvo_mode == TAHVO_MODE_HOST) { + otg->host = NULL; + tahvo_usb_become_host(tu); + } + + otg->host = host; + + mutex_unlock(&tu->serialize); + + return 0; +} + +static int tahvo_usb_set_peripheral(struct usb_otg *otg, + struct usb_gadget *gadget) +{ + struct tahvo_usb *tu = container_of(otg->phy, struct tahvo_usb, phy); + + dev_dbg(&tu->pt_dev->dev, "%s %p\n", __func__, gadget); + + mutex_lock(&tu->serialize); + + if (!gadget) { + if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL) + tahvo_usb_power_off(tu); + tu->phy.otg->gadget = NULL; + mutex_unlock(&tu->serialize); + return 0; + } + + tu->phy.otg->gadget = gadget; + if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL) + tahvo_usb_become_peripheral(tu); + + mutex_unlock(&tu->serialize); + + return 0; +} + +static irqreturn_t tahvo_usb_vbus_interrupt(int irq, void *_tu) +{ + struct tahvo_usb *tu = _tu; + + mutex_lock(&tu->serialize); + check_vbus_state(tu); + mutex_unlock(&tu->serialize); + + return IRQ_HANDLED; +} + +static ssize_t otg_mode_show(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct tahvo_usb *tu = dev_get_drvdata(device); + + switch (tu->tahvo_mode) { + case TAHVO_MODE_HOST: + return sprintf(buf, "host\n"); + case TAHVO_MODE_PERIPHERAL: + return sprintf(buf, "peripheral\n"); + } + + return -EINVAL; +} + +static ssize_t otg_mode_store(struct device *device, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct tahvo_usb *tu = dev_get_drvdata(device); + int r; + + mutex_lock(&tu->serialize); + if (count >= 4 && strncmp(buf, "host", 4) == 0) { + if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL) + tahvo_usb_stop_peripheral(tu); + tu->tahvo_mode = TAHVO_MODE_HOST; + if (tu->phy.otg->host) { + dev_info(device, "HOST mode: host controller present\n"); + tahvo_usb_become_host(tu); + } else { + dev_info(device, "HOST mode: no host controller, powering off\n"); + tahvo_usb_power_off(tu); + } + r = strlen(buf); + } else if (count >= 10 && strncmp(buf, "peripheral", 10) == 0) { + if (tu->tahvo_mode == TAHVO_MODE_HOST) + tahvo_usb_stop_host(tu); + tu->tahvo_mode = TAHVO_MODE_PERIPHERAL; + if (tu->phy.otg->gadget) { + dev_info(device, "PERIPHERAL mode: gadget driver present\n"); + tahvo_usb_become_peripheral(tu); + } else { + dev_info(device, "PERIPHERAL mode: no gadget driver, powering off\n"); + tahvo_usb_power_off(tu); + } + r = strlen(buf); + } else { + r = -EINVAL; + } + mutex_unlock(&tu->serialize); + + return r; +} +static DEVICE_ATTR(otg_mode, 0644, otg_mode_show, otg_mode_store); + +static struct attribute *tahvo_attributes[] = { + &dev_attr_vbus.attr, + &dev_attr_otg_mode.attr, + NULL +}; + +static struct attribute_group tahvo_attr_group = { + .attrs = tahvo_attributes, +}; + +static int tahvo_usb_probe(struct platform_device *pdev) +{ + struct retu_dev *rdev = dev_get_drvdata(pdev->dev.parent); + struct tahvo_usb *tu; + int ret; + + tu = devm_kzalloc(&pdev->dev, sizeof(*tu), GFP_KERNEL); + if (!tu) + return -ENOMEM; + + tu->phy.otg = devm_kzalloc(&pdev->dev, sizeof(*tu->phy.otg), + GFP_KERNEL); + if (!tu->phy.otg) + return -ENOMEM; + + tu->pt_dev = pdev; + + /* Default mode */ +#ifdef CONFIG_TAHVO_USB_HOST_BY_DEFAULT + tu->tahvo_mode = TAHVO_MODE_HOST; +#else + tu->tahvo_mode = TAHVO_MODE_PERIPHERAL; +#endif + + mutex_init(&tu->serialize); + + tu->ick = devm_clk_get(&pdev->dev, "usb_l4_ick"); + if (!IS_ERR(tu->ick)) + clk_enable(tu->ick); + + /* + * Set initial state, so that we generate kevents only on state changes. + */ + tu->vbus_state = retu_read(rdev, TAHVO_REG_IDSR) & TAHVO_STAT_VBUS; + + tu->extcon.name = DRIVER_NAME; + tu->extcon.supported_cable = tahvo_cable; + tu->extcon.dev.parent = &pdev->dev; + + ret = extcon_dev_register(&tu->extcon); + if (ret) { + dev_err(&pdev->dev, "could not register extcon device: %d\n", + ret); + goto err_disable_clk; + } + + /* Set the initial cable state. */ + extcon_set_cable_state(&tu->extcon, "USB-HOST", + tu->tahvo_mode == TAHVO_MODE_HOST); + extcon_set_cable_state(&tu->extcon, "USB", tu->vbus_state); + + /* Create OTG interface */ + tahvo_usb_power_off(tu); + tu->phy.dev = &pdev->dev; + tu->phy.state = OTG_STATE_UNDEFINED; + tu->phy.label = DRIVER_NAME; + tu->phy.set_suspend = tahvo_usb_set_suspend; + + tu->phy.otg->phy = &tu->phy; + tu->phy.otg->set_host = tahvo_usb_set_host; + tu->phy.otg->set_peripheral = tahvo_usb_set_peripheral; + + ret = usb_add_phy(&tu->phy, USB_PHY_TYPE_USB2); + if (ret < 0) { + dev_err(&pdev->dev, "cannot register USB transceiver: %d\n", + ret); + goto err_extcon_unreg; + } + + dev_set_drvdata(&pdev->dev, tu); + + tu->irq = platform_get_irq(pdev, 0); + ret = request_threaded_irq(tu->irq, NULL, tahvo_usb_vbus_interrupt, 0, + "tahvo-vbus", tu); + if (ret) { + dev_err(&pdev->dev, "could not register tahvo-vbus irq: %d\n", + ret); + goto err_remove_phy; + } + + /* Attributes */ + ret = sysfs_create_group(&pdev->dev.kobj, &tahvo_attr_group); + if (ret) { + dev_err(&pdev->dev, "cannot create sysfs group: %d\n", ret); + goto err_free_irq; + } + + return 0; + +err_free_irq: + free_irq(tu->irq, tu); +err_remove_phy: + usb_remove_phy(&tu->phy); +err_extcon_unreg: + extcon_dev_unregister(&tu->extcon); +err_disable_clk: + if (!IS_ERR(tu->ick)) + clk_disable(tu->ick); + + return ret; +} + +static int tahvo_usb_remove(struct platform_device *pdev) +{ + struct tahvo_usb *tu = platform_get_drvdata(pdev); + + sysfs_remove_group(&pdev->dev.kobj, &tahvo_attr_group); + free_irq(tu->irq, tu); + usb_remove_phy(&tu->phy); + extcon_dev_unregister(&tu->extcon); + if (!IS_ERR(tu->ick)) + clk_disable(tu->ick); + + return 0; +} + +static struct platform_driver tahvo_usb_driver = { + .probe = tahvo_usb_probe, + .remove = tahvo_usb_remove, + .driver = { + .name = "tahvo-usb", + .owner = THIS_MODULE, + }, +}; +module_platform_driver(tahvo_usb_driver); + +MODULE_DESCRIPTION("Tahvo USB transceiver driver"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Juha Yrjölä, Tony Lindgren, and Timo Teräs"); +MODULE_AUTHOR("Aaro Koskinen <aaro.koskinen@iki.fi>"); diff --git a/drivers/usb/phy/phy-twl6030-usb.c b/drivers/usb/phy/phy-twl6030-usb.c index bad57ce77ba..214172b68d5 100644 --- a/drivers/usb/phy/phy-twl6030-usb.c +++ b/drivers/usb/phy/phy-twl6030-usb.c @@ -328,7 +328,7 @@ static int twl6030_usb_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct twl4030_usb_data *pdata = dev_get_platdata(dev); - twl = devm_kzalloc(dev, sizeof *twl, GFP_KERNEL); + twl = devm_kzalloc(dev, sizeof(*twl), GFP_KERNEL); if (!twl) return -ENOMEM; diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c index 1b74523e1fe..e6f61e4361d 100644 --- a/drivers/usb/phy/phy.c +++ b/drivers/usb/phy/phy.c @@ -329,6 +329,8 @@ int usb_add_phy(struct usb_phy *x, enum usb_phy_type type) return -EINVAL; } + ATOMIC_INIT_NOTIFIER_HEAD(&x->notifier); + spin_lock_irqsave(&phy_lock, flags); list_for_each_entry(phy, &phy_list, head) { @@ -367,6 +369,8 @@ int usb_add_phy_dev(struct usb_phy *x) return -EINVAL; } + ATOMIC_INIT_NOTIFIER_HEAD(&x->notifier); + spin_lock_irqsave(&phy_lock, flags); list_for_each_entry(phy_bind, &phy_bind_list, list) if (!(strcmp(phy_bind->phy_dev_name, dev_name(x->dev)))) diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index 45b94019aec..d49f9c32603 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -1124,19 +1124,8 @@ void usbhs_fifo_init(struct usbhs_priv *priv) mod->irq_brdysts = 0; cfifo->pipe = NULL; - cfifo->tx_chan = NULL; - cfifo->rx_chan = NULL; - d0fifo->pipe = NULL; - d0fifo->tx_chan = NULL; - d0fifo->rx_chan = NULL; - d1fifo->pipe = NULL; - d1fifo->tx_chan = NULL; - d1fifo->rx_chan = NULL; - - usbhsf_dma_init(priv, usbhsf_get_d0fifo(priv)); - usbhsf_dma_init(priv, usbhsf_get_d1fifo(priv)); } void usbhs_fifo_quit(struct usbhs_priv *priv) @@ -1147,9 +1136,6 @@ void usbhs_fifo_quit(struct usbhs_priv *priv) mod->irq_ready = NULL; mod->irq_bempsts = 0; mod->irq_brdysts = 0; - - usbhsf_dma_quit(priv, usbhsf_get_d0fifo(priv)); - usbhsf_dma_quit(priv, usbhsf_get_d1fifo(priv)); } int usbhs_fifo_probe(struct usbhs_priv *priv) @@ -1171,6 +1157,7 @@ int usbhs_fifo_probe(struct usbhs_priv *priv) fifo->ctr = D0FIFOCTR; fifo->tx_slave.shdma_slave.slave_id = usbhs_get_dparam(priv, d0_tx_id); fifo->rx_slave.shdma_slave.slave_id = usbhs_get_dparam(priv, d0_rx_id); + usbhsf_dma_init(priv, fifo); /* D1FIFO */ fifo = usbhsf_get_d1fifo(priv); @@ -1180,10 +1167,13 @@ int usbhs_fifo_probe(struct usbhs_priv *priv) fifo->ctr = D1FIFOCTR; fifo->tx_slave.shdma_slave.slave_id = usbhs_get_dparam(priv, d1_tx_id); fifo->rx_slave.shdma_slave.slave_id = usbhs_get_dparam(priv, d1_rx_id); + usbhsf_dma_init(priv, fifo); return 0; } void usbhs_fifo_remove(struct usbhs_priv *priv) { + usbhsf_dma_quit(priv, usbhsf_get_d0fifo(priv)); + usbhsf_dma_quit(priv, usbhsf_get_d1fifo(priv)); } diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index 3385aeb5a36..458f3766bef 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -987,11 +987,11 @@ int usbhs_mod_gadget_probe(struct usbhs_priv *priv) /* init DCP */ if (usbhsg_is_dcp(uep)) { gpriv->gadget.ep0 = &uep->ep; - uep->ep.maxpacket = 64; + usb_ep_set_maxpacket_limit(&uep->ep, 64); } /* init normal pipe */ else { - uep->ep.maxpacket = 512; + usb_ep_set_maxpacket_limit(&uep->ep, 512); list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list); } } diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index 6d722695e02..e273e5ac19c 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -38,6 +38,14 @@ struct phy_ops { }; /** + * struct phy_attrs - represents phy attributes + * @bus_width: Data path width implemented by PHY + */ +struct phy_attrs { + u32 bus_width; +}; + +/** * struct phy - represents the phy device * @dev: phy device * @id: id of the phy device @@ -46,6 +54,7 @@ struct phy_ops { * @mutex: mutex to protect phy_ops * @init_count: used to protect when the PHY is used by multiple consumers * @power_count: used to protect when the PHY is used by multiple consumers + * @phy_attrs: used to specify PHY specific attributes */ struct phy { struct device dev; @@ -55,6 +64,7 @@ struct phy { struct mutex mutex; int init_count; int power_count; + struct phy_attrs attrs; }; /** @@ -127,6 +137,14 @@ int phy_init(struct phy *phy); int phy_exit(struct phy *phy); int phy_power_on(struct phy *phy); int phy_power_off(struct phy *phy); +static inline int phy_get_bus_width(struct phy *phy) +{ + return phy->attrs.bus_width; +} +static inline void phy_set_bus_width(struct phy *phy, int bus_width) +{ + phy->attrs.bus_width = bus_width; +} struct phy *phy_get(struct device *dev, const char *string); struct phy *devm_phy_get(struct device *dev, const char *string); void phy_put(struct phy *phy); @@ -199,6 +217,16 @@ static inline int phy_power_off(struct phy *phy) return -ENOSYS; } +static inline int phy_get_bus_width(struct phy *phy) +{ + return -ENOSYS; +} + +static inline void phy_set_bus_width(struct phy *phy, int bus_width) +{ + return; +} + static inline struct phy *phy_get(struct device *dev, const char *string) { return ERR_PTR(-ENOSYS); diff --git a/include/linux/platform_data/usb-omap1.h b/include/linux/platform_data/usb-omap1.h new file mode 100644 index 00000000000..43b5ce139c3 --- /dev/null +++ b/include/linux/platform_data/usb-omap1.h @@ -0,0 +1,53 @@ +/* + * Platform data for OMAP1 USB + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive for + * more details. + */ +#ifndef __LINUX_USB_OMAP1_H +#define __LINUX_USB_OMAP1_H + +#include <linux/platform_device.h> + +struct omap_usb_config { + /* Configure drivers according to the connectors on your board: + * - "A" connector (rectagular) + * ... for host/OHCI use, set "register_host". + * - "B" connector (squarish) or "Mini-B" + * ... for device/gadget use, set "register_dev". + * - "Mini-AB" connector (very similar to Mini-B) + * ... for OTG use as device OR host, initialize "otg" + */ + unsigned register_host:1; + unsigned register_dev:1; + u8 otg; /* port number, 1-based: usb1 == 2 */ + + const char *extcon; /* extcon device for OTG */ + + u8 hmc_mode; + + /* implicitly true if otg: host supports remote wakeup? */ + u8 rwc; + + /* signaling pins used to talk to transceiver on usbN: + * 0 == usbN unused + * 2 == usb0-only, using internal transceiver + * 3 == 3 wire bidirectional + * 4 == 4 wire bidirectional + * 6 == 6 wire unidirectional (or TLL) + */ + u8 pins[3]; + + struct platform_device *udc_device; + struct platform_device *ohci_device; + struct platform_device *otg_device; + + u32 (*usb0_init)(unsigned nwires, unsigned is_device); + u32 (*usb1_init)(unsigned nwires); + u32 (*usb2_init)(unsigned nwires, unsigned alt_pingroup); + + int (*ocpi_enable)(void); +}; + +#endif /* __LINUX_USB_OMAP1_H */ diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 5e61589fc16..dba63f53906 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -468,6 +468,8 @@ struct usb_function_instance { struct config_group group; struct list_head cfs_list; struct usb_function_driver *fd; + int (*set_inst_name)(struct usb_function_instance *inst, + const char *name); void (*free_func_inst)(struct usb_function_instance *inst); }; diff --git a/include/linux/usb/functionfs.h b/include/linux/usb/functionfs.h index 65d0a88dbc6..71190663f1e 100644 --- a/include/linux/usb/functionfs.h +++ b/include/linux/usb/functionfs.h @@ -3,34 +3,4 @@ #include <uapi/linux/usb/functionfs.h> - -struct ffs_data; -struct usb_composite_dev; -struct usb_configuration; - - -static int functionfs_init(void) __attribute__((warn_unused_result)); -static void functionfs_cleanup(void); - -static int functionfs_bind(struct ffs_data *ffs, struct usb_composite_dev *cdev) - __attribute__((warn_unused_result, nonnull)); -static void functionfs_unbind(struct ffs_data *ffs) - __attribute__((nonnull)); - -static int functionfs_bind_config(struct usb_composite_dev *cdev, - struct usb_configuration *c, - struct ffs_data *ffs) - __attribute__((warn_unused_result, nonnull)); - - -static int functionfs_ready_callback(struct ffs_data *ffs) - __attribute__((warn_unused_result, nonnull)); -static void functionfs_closed_callback(struct ffs_data *ffs) - __attribute__((nonnull)); -static void *functionfs_acquire_dev_callback(const char *dev_name) - __attribute__((warn_unused_result, nonnull)); -static void functionfs_release_dev_callback(struct ffs_data *ffs_data) - __attribute__((nonnull)); - - #endif diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 942ef5e053b..c3a61853cd1 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -148,6 +148,9 @@ struct usb_ep_ops { * @maxpacket:The maximum packet size used on this endpoint. The initial * value can sometimes be reduced (hardware allowing), according to * the endpoint descriptor used to configure the endpoint. + * @maxpacket_limit:The maximum packet size value which can be handled by this + * endpoint. It's set once by UDC driver when endpoint is initialized, and + * should not be changed. Should not be confused with maxpacket. * @max_streams: The maximum number of streams supported * by this EP (0 - 16, actual number is 2^n) * @mult: multiplier, 'mult' value for SS Isoc EPs @@ -171,6 +174,7 @@ struct usb_ep { const struct usb_ep_ops *ops; struct list_head ep_list; unsigned maxpacket:16; + unsigned maxpacket_limit:16; unsigned max_streams:16; unsigned mult:2; unsigned maxburst:5; @@ -182,6 +186,21 @@ struct usb_ep { /*-------------------------------------------------------------------------*/ /** + * usb_ep_set_maxpacket_limit - set maximum packet size limit for endpoint + * @ep:the endpoint being configured + * @maxpacket_limit:value of maximum packet size limit + * + * This function shoud be used only in UDC drivers to initialize endpoint + * (usually in probe function). + */ +static inline void usb_ep_set_maxpacket_limit(struct usb_ep *ep, + unsigned maxpacket_limit) +{ + ep->maxpacket_limit = maxpacket_limit; + ep->maxpacket = maxpacket_limit; +} + +/** * usb_ep_enable - configure endpoint, making it usable * @ep:the endpoint being configured. may not be the endpoint named "ep0". * drivers discover endpoints through the ep_list of a usb_gadget. @@ -485,6 +504,11 @@ struct usb_gadget_ops { * @max_speed: Maximal speed the UDC can handle. UDC must support this * and all slower speeds. * @state: the state we are now (attached, suspended, configured, etc) + * @name: Identifies the controller hardware type. Used in diagnostics + * and sometimes configuration. + * @dev: Driver model state for this abstract device. + * @out_epnum: last used out ep number + * @in_epnum: last used in ep number * @sg_supported: true if we can handle scatter-gather * @is_otg: True if the USB device port uses a Mini-AB jack, so that the * gadget driver must provide a USB OTG descriptor. @@ -497,11 +521,8 @@ struct usb_gadget_ops { * only supports HNP on a different root port. * @b_hnp_enable: OTG device feature flag, indicating that the A-Host * enabled HNP support. - * @name: Identifies the controller hardware type. Used in diagnostics - * and sometimes configuration. - * @dev: Driver model state for this abstract device. - * @out_epnum: last used out ep number - * @in_epnum: last used in ep number + * @quirk_ep_out_aligned_size: epout requires buffer size to be aligned to + * MaxPacketSize. * * Gadgets have a mostly-portable "gadget driver" implementing device * functions, handling all usb configurations and interfaces. Gadget @@ -530,16 +551,18 @@ struct usb_gadget { enum usb_device_speed speed; enum usb_device_speed max_speed; enum usb_device_state state; + const char *name; + struct device dev; + unsigned out_epnum; + unsigned in_epnum; + unsigned sg_supported:1; unsigned is_otg:1; unsigned is_a_peripheral:1; unsigned b_hnp_enable:1; unsigned a_hnp_support:1; unsigned a_alt_hnp_support:1; - const char *name; - struct device dev; - unsigned out_epnum; - unsigned in_epnum; + unsigned quirk_ep_out_aligned_size:1; }; #define work_to_gadget(w) (container_of((w), struct usb_gadget, work)) @@ -558,6 +581,23 @@ static inline struct usb_gadget *dev_to_usb_gadget(struct device *dev) /** + * usb_ep_align_maybe - returns @len aligned to ep's maxpacketsize if gadget + * requires quirk_ep_out_aligned_size, otherwise reguens len. + * @g: controller to check for quirk + * @ep: the endpoint whose maxpacketsize is used to align @len + * @len: buffer size's length to align to @ep's maxpacketsize + * + * This helper is used in case it's required for any reason to check and maybe + * align buffer's size to an ep's maxpacketsize. + */ +static inline size_t +usb_ep_align_maybe(struct usb_gadget *g, struct usb_ep *ep, size_t len) +{ + return !g->quirk_ep_out_aligned_size ? len : + round_up(len, (size_t)ep->desc->wMaxPacketSize); +} + +/** * gadget_is_dualspeed - return true iff the hardware handles high speed * @g: controller that might support both high and full speeds */ diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h index eb505250940..a4ee1b58218 100644 --- a/include/linux/usb/musb.h +++ b/include/linux/usb/musb.h @@ -76,6 +76,9 @@ struct musb_hdrc_config { unsigned dma:1 __deprecated; /* supports DMA */ unsigned vendor_req:1 __deprecated; /* vendor registers required */ + /* need to explicitly de-assert the port reset after resume? */ + unsigned host_port_deassert_reset_at_resume:1; + u8 num_eps; /* number of endpoints _with_ ep0 */ u8 dma_channels __deprecated; /* number of dma channels */ u8 dyn_fifo_size; /* dynamic size in bytes */ diff --git a/include/linux/usb/omap_control_usb.h b/include/linux/usb/omap_control_usb.h index 596b0191881..69ae383ee3c 100644 --- a/include/linux/usb/omap_control_usb.h +++ b/include/linux/usb/omap_control_usb.h @@ -24,6 +24,7 @@ enum omap_control_usb_type { OMAP_CTRL_TYPE_USB2, /* USB2_PHY, power down in CONTROL_DEV_CONF */ OMAP_CTRL_TYPE_PIPE3, /* PIPE3 PHY, DPLL & seperate Rx/Tx power */ OMAP_CTRL_TYPE_DRA7USB2, /* USB2 PHY, power and power_aux e.g. DRA7 */ + OMAP_CTRL_TYPE_AM437USB2, /* USB2 PHY, power e.g. AM437x */ }; struct omap_control_usb { @@ -64,6 +65,11 @@ enum omap_control_usb_mode { #define OMAP_CTRL_USB2_PHY_PD BIT(28) +#define AM437X_CTRL_USB2_PHY_PD BIT(0) +#define AM437X_CTRL_USB2_OTG_PD BIT(1) +#define AM437X_CTRL_USB2_OTGVDET_EN BIT(19) +#define AM437X_CTRL_USB2_OTGSESSEND_EN BIT(20) + #if IS_ENABLED(CONFIG_OMAP_CONTROL_USB) extern void omap_control_usb_phy_power(struct device *dev, int on); extern void omap_control_usb_set_mode(struct device *dev, diff --git a/drivers/usb/phy/phy-fsm-usb.h b/include/linux/usb/otg-fsm.h index 7441b46a27f..b6ba1bfb86f 100644 --- a/drivers/usb/phy/phy-fsm-usb.h +++ b/include/linux/usb/otg-fsm.h @@ -15,6 +15,12 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ +#ifndef __LINUX_USB_OTG_FSM_H +#define __LINUX_USB_OTG_FSM_H + +#include <linux/mutex.h> +#include <linux/errno.h> + #undef VERBOSE #ifdef VERBOSE @@ -110,7 +116,7 @@ struct otg_fsm { /* Current usb protocol used: 0:undefine; 1:host; 2:client */ int protocol; - spinlock_t lock; + struct mutex lock; }; struct otg_fsm_ops { @@ -234,3 +240,5 @@ static inline int otg_start_gadget(struct otg_fsm *fsm, int on) } int otg_statemachine(struct otg_fsm *fsm); + +#endif /* __LINUX_USB_OTG_FSM_H */ |