Merge tag 'xceiv-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

usb: xceiv: patches for v3.7 merge window

nop xceiv got its own header to avoid polluting otg.h. It has also
learned to work as USB2 and USB3 phys so we can use it on USB3
controllers.

Together with those two changes to nop xceiv, we're adding basic
PHY support to dwc3 driver, this is to allow platforms which actually
have a SW-controllable PHY talk to them through dwc3 driver.

We're adding a new phy driver for the OMAP architecture. This driver
is for the PHY found in OMAP4 SoCs, and a new phy driver for the
marvell architecture. An extra phy driver - for Tegra SoCs - is now
moving from arch/arm/mach-tegra* to drivers/usb/phy.

Also here, there's the creation of <linux/usb/phy.h> which should be
used from now on for PHY drivers, even those which don't support
OTG.

Documentation/devicetree/bindings/usb/twlxxxx-usb.txt

···
+USB COMPARATOR OF TWL CHIPS
+
+TWL6030 USB COMPARATOR
+ - compatible : Should be "ti,twl6030-usb"
+ - interrupts : Two interrupt numbers to the cpu should be specified. First
+   interrupt number is the otg interrupt number that raises ID interrupts when
+   the controller has to act as host and the second interrupt number is the
+   usb interrupt number that raises VBUS interrupts when the controller has to
+   act as device
+ - usb-supply : phandle to the regulator device tree node. It should be vusb
+   if it is twl6030 or ldousb if it is twl6025 subclass.
+
+twl6030-usb {
+	compatible = "ti,twl6030-usb";
+	interrupts = < 4 10 >;
+};
+
+Board specific device node entry
+&twl6030-usb {
+	usb-supply = <&vusb>;
+};
+
+TWL4030 USB PHY AND COMPARATOR
+ - compatible : Should be "ti,twl4030-usb"
+ - interrupts : The interrupt numbers to the cpu should be specified. First
+   interrupt number is the otg interrupt number that raises ID interrupts
+   and VBUS interrupts. The second interrupt number is optional.
+ - <supply-name>-supply : phandle to the regulator device tree node.
+   <supply-name> should be vusb1v5, vusb1v8 and vusb3v1
+ - usb_mode : The mode used by the phy to connect to the controller. "1"
+   specifies "ULPI" mode and "2" specifies "CEA2011_3PIN" mode.
+
+twl4030-usb {
+	compatible = "ti,twl4030-usb";
+	interrupts = < 10 4 >;
+	usb1v5-supply = <&vusb1v5>;
+	usb1v8-supply = <&vusb1v8>;
+	usb3v1-supply = <&vusb3v1>;
+	usb_mode = <1>;
+};

Documentation/devicetree/bindings/usb/usb-phy.txt

···
+USB PHY
+
+OMAP USB2 PHY
+
+Required properties:
+ - compatible: Should be "ti,omap-usb2"
+ - reg : Address and length of the register set for the device. Also
+add the address of control module dev conf register until a driver for
+control module is added
+
+This is usually a subnode of ocp2scp to which it is connected.
+
+usb2phy@4a0ad080 {
+	compatible = "ti,omap-usb2";
+	reg = <0x4a0ad080 0x58>,
+	      <0x4a002300 0x4>;
+};

arch/arm/mach-omap2/board-omap3evm.c

···
 #include <linux/spi/ads7846.h>
 #include <linux/i2c/twl.h>
 #include <linux/usb/otg.h>
+#include <linux/usb/nop-usb-xceiv.h>
 #include <linux/smsc911x.h>
 
 #include <linux/wl12xx.h>

arch/arm/mach-omap2/omap_phy_internal.c

···
 #include <plat/usb.h>
 #include "control.h"
 
-/* OMAP control module register for UTMI PHY */
-#define CONTROL_DEV_CONF		0x300
-#define PHY_PD				0x1
-
-#define USBOTGHS_CONTROL		0x33c
-#define	AVALID				BIT(0)
-#define	BVALID				BIT(1)
-#define	VBUSVALID			BIT(2)
-#define	SESSEND				BIT(3)
-#define	IDDIG				BIT(4)
-
-static struct clk *phyclk, *clk48m, *clk32k;
-static void __iomem *ctrl_base;
-static int usbotghs_control;
-
-int omap4430_phy_init(struct device *dev)
-{
-	ctrl_base = ioremap(OMAP443X_SCM_BASE, SZ_1K);
-	if (!ctrl_base) {
-		pr_err("control module ioremap failed\n");
-		return -ENOMEM;
-	}
-	/* Power down the phy */
-	__raw_writel(PHY_PD, ctrl_base + CONTROL_DEV_CONF);
-
-	if (!dev) {
-		iounmap(ctrl_base);
-		return 0;
-	}
-
-	phyclk = clk_get(dev, "ocp2scp_usb_phy_ick");
-	if (IS_ERR(phyclk)) {
-		dev_err(dev, "cannot clk_get ocp2scp_usb_phy_ick\n");
-		iounmap(ctrl_base);
-		return PTR_ERR(phyclk);
-	}
-
-	clk48m = clk_get(dev, "ocp2scp_usb_phy_phy_48m");
-	if (IS_ERR(clk48m)) {
-		dev_err(dev, "cannot clk_get ocp2scp_usb_phy_phy_48m\n");
-		clk_put(phyclk);
-		iounmap(ctrl_base);
-		return PTR_ERR(clk48m);
-	}
-
-	clk32k = clk_get(dev, "usb_phy_cm_clk32k");
-	if (IS_ERR(clk32k)) {
-		dev_err(dev, "cannot clk_get usb_phy_cm_clk32k\n");
-		clk_put(phyclk);
-		clk_put(clk48m);
-		iounmap(ctrl_base);
-		return PTR_ERR(clk32k);
-	}
-	return 0;
-}
-
-int omap4430_phy_set_clk(struct device *dev, int on)
-{
-	static int state;
-
-	if (on && !state) {
-		/* Enable the phy clocks */
-		clk_enable(phyclk);
-		clk_enable(clk48m);
-		clk_enable(clk32k);
-		state = 1;
-	} else if (state) {
-		/* Disable the phy clocks */
-		clk_disable(phyclk);
-		clk_disable(clk48m);
-		clk_disable(clk32k);
-		state = 0;
-	}
-	return 0;
-}
-
-int omap4430_phy_power(struct device *dev, int ID, int on)
-{
-	if (on) {
-		if (ID)
-			/* enable VBUS valid, IDDIG groung */
-			__raw_writel(AVALID | VBUSVALID, ctrl_base +
-							USBOTGHS_CONTROL);
-		else
-			/*
-			 * Enable VBUS Valid, AValid and IDDIG
-			 * high impedance
-			 */
-			__raw_writel(IDDIG | AVALID | VBUSVALID,
-						ctrl_base + USBOTGHS_CONTROL);
-	} else {
-		/* Enable session END and IDIG to high impedance. */
-		__raw_writel(SESSEND | IDDIG, ctrl_base +
-					USBOTGHS_CONTROL);
-	}
-	return 0;
-}
-
-int omap4430_phy_suspend(struct device *dev, int suspend)
-{
-	if (suspend) {
-		/* Disable the clocks */
-		omap4430_phy_set_clk(dev, 0);
-		/* Power down the phy */
-		__raw_writel(PHY_PD, ctrl_base + CONTROL_DEV_CONF);
-
-		/* save the context */
-		usbotghs_control = __raw_readl(ctrl_base + USBOTGHS_CONTROL);
-	} else {
-		/* Enable the internel phy clcoks */
-		omap4430_phy_set_clk(dev, 1);
-		/* power on the phy */
-		if (__raw_readl(ctrl_base + CONTROL_DEV_CONF) & PHY_PD) {
-			__raw_writel(~PHY_PD, ctrl_base + CONTROL_DEV_CONF);
-			mdelay(200);
-		}
-
-		/* restore the context */
-		__raw_writel(usbotghs_control, ctrl_base + USBOTGHS_CONTROL);
-	}
-
-	return 0;
-}
-
-int omap4430_phy_exit(struct device *dev)
-{
-	if (ctrl_base)
-		iounmap(ctrl_base);
-	if (phyclk)
-		clk_put(phyclk);
-	if (clk48m)
-		clk_put(clk48m);
-	if (clk32k)
-		clk_put(clk32k);
-
-	return 0;
-}
-
 void am35x_musb_reset(void)
 {
 	u32	regval;

arch/arm/mach-omap2/twl-common.c

···
 
 #if defined(CONFIG_ARCH_OMAP4)
 static struct twl4030_usb_data omap4_usb_pdata = {
-	.phy_init	= omap4430_phy_init,
-	.phy_exit	= omap4430_phy_exit,
-	.phy_power	= omap4430_phy_power,
-	.phy_set_clock	= omap4430_phy_set_clk,
-	.phy_suspend	= omap4430_phy_suspend,
 };
 
 static struct regulator_init_data omap4_vdac_idata = {

arch/arm/mach-omap2/usb-musb.c

···
 	dev->dma_mask = &musb_dmamask;
 	dev->coherent_dma_mask = musb_dmamask;
 	put_device(dev);
-
-	if (cpu_is_omap44xx())
-		omap4430_phy_init(dev);
 }

arch/arm/mach-tegra/Makefile

···
 obj-$(CONFIG_TEGRA_SYSTEM_DMA)		+= dma.o
 obj-$(CONFIG_CPU_FREQ)                  += cpu-tegra.o
 obj-$(CONFIG_TEGRA_PCI)			+= pcie.o
-obj-$(CONFIG_USB_SUPPORT)		+= usb_phy.o
 
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= board-dt-tegra20.o
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= board-dt-tegra30.o

arch/arm/mach-tegra/devices.c

···
 #include <mach/irqs.h>
 #include <mach/iomap.h>
 #include <mach/dma.h>
-#include <mach/usb_phy.h>
+#include <linux/usb/tegra_usb_phy.h>
 
 #include "gpio-names.h"
 #include "devices.h"

arch/arm/mach-tegra/devices.h

···
 #include <linux/platform_device.h>
 #include <linux/platform_data/tegra_usb.h>
 
-#include <mach/usb_phy.h>
+#include <linux/usb/tegra_usb_phy.h>
 
 extern struct tegra_ulpi_config tegra_ehci2_ulpi_phy_config;
 

arch/arm/mach-tegra/include/mach/usb_phy.h include/linux/usb/tegra_usb_phy.h

···
 /*
- * arch/arm/mach-tegra/include/mach/usb_phy.h
- *
  * Copyright (C) 2010 Google, Inc.
  *
  * This software is licensed under the terms of the GNU General Public
···
  *
  */
 
-#ifndef __MACH_USB_PHY_H
-#define __MACH_USB_PHY_H
+#ifndef __TEGRA_USB_PHY_H
+#define __TEGRA_USB_PHY_H
 
 #include <linux/clk.h>
 #include <linux/usb/otg.h>
···
 	enum tegra_usb_phy_mode mode;
 	void *config;
 	struct usb_phy *ulpi;
+	struct usb_phy u_phy;
+	struct device *dev;
 };
 
 struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
 	void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode);
 
-int tegra_usb_phy_power_on(struct tegra_usb_phy *phy);
-
 void tegra_usb_phy_clk_disable(struct tegra_usb_phy *phy);
 
 void tegra_usb_phy_clk_enable(struct tegra_usb_phy *phy);
-
-void tegra_usb_phy_power_off(struct tegra_usb_phy *phy);
 
 void tegra_usb_phy_preresume(struct tegra_usb_phy *phy);
 
···
 
 void tegra_ehci_phy_restore_end(struct tegra_usb_phy *phy);
 
-void tegra_usb_phy_close(struct tegra_usb_phy *phy);
-
-#endif /* __MACH_USB_PHY_H */
+#endif /* __TEGRA_USB_PHY_H */

arch/arm/mach-tegra/usb_phy.c drivers/usb/phy/tegra_usb_phy.c

···
 /*
- * arch/arm/mach-tegra/usb_phy.c
- *
  * Copyright (C) 2010 Google, Inc.
  *
  * Author:
···
 #include <linux/usb/ulpi.h>
 #include <asm/mach-types.h>
 #include <mach/gpio-tegra.h>
-#include <mach/usb_phy.h>
+#include <linux/usb/tegra_usb_phy.h>
 #include <mach/iomap.h>
 
 #define ULPI_VIEWPORT		0x170
···
 	return 0;
 }
 
-static void utmi_phy_power_off(struct tegra_usb_phy *phy)
+static int utmi_phy_power_off(struct tegra_usb_phy *phy)
 {
 	unsigned long val;
 	void __iomem *base = phy->regs;
···
 	       UTMIP_FORCE_PDDR_POWERDOWN;
 	writel(val, base + UTMIP_XCVR_CFG1);
 
-	utmip_pad_power_off(phy);
+	return utmip_pad_power_off(phy);
 }
 
 static void utmi_phy_preresume(struct tegra_usb_phy *phy)
···
 	return 0;
 }
 
-static void ulpi_phy_power_off(struct tegra_usb_phy *phy)
+static int ulpi_phy_power_off(struct tegra_usb_phy *phy)
 {
 	unsigned long val;
 	void __iomem *base = phy->regs;
···
 	val &= ~(USB_PORTSC1_WKOC | USB_PORTSC1_WKDS | USB_PORTSC1_WKCN);
 	writel(val, base + USB_PORTSC1);
 
-	gpio_direction_output(config->reset_gpio, 0);
 	clk_disable(phy->clk);
+	return gpio_direction_output(config->reset_gpio, 0);
+}
+
+static int	tegra_phy_init(struct usb_phy *x)
+{
+	struct tegra_usb_phy *phy = container_of(x, struct tegra_usb_phy, u_phy);
+	struct tegra_ulpi_config *ulpi_config;
+	int err;
+
+	if (phy_is_ulpi(phy)) {
+		ulpi_config = phy->config;
+		phy->clk = clk_get_sys(NULL, ulpi_config->clk);
+		if (IS_ERR(phy->clk)) {
+			pr_err("%s: can't get ulpi clock\n", __func__);
+			err = -ENXIO;
+			goto err1;
+		}
+		if (!gpio_is_valid(ulpi_config->reset_gpio))
+			ulpi_config->reset_gpio =
+				of_get_named_gpio(phy->dev->of_node,
+						  "nvidia,phy-reset-gpio", 0);
+		if (!gpio_is_valid(ulpi_config->reset_gpio)) {
+			pr_err("%s: invalid reset gpio: %d\n", __func__,
+			       ulpi_config->reset_gpio);
+			err = -EINVAL;
+			goto err1;
+		}
+		gpio_request(ulpi_config->reset_gpio, "ulpi_phy_reset_b");
+		gpio_direction_output(ulpi_config->reset_gpio, 0);
+		phy->ulpi = otg_ulpi_create(&ulpi_viewport_access_ops, 0);
+		phy->ulpi->io_priv = phy->regs + ULPI_VIEWPORT;
+	} else {
+		err = utmip_pad_open(phy);
+		if (err < 0)
+			goto err1;
+	}
+	return 0;
+err1:
+	clk_disable_unprepare(phy->pll_u);
+	clk_put(phy->pll_u);
+	return err;
+}
+
+static void tegra_usb_phy_close(struct usb_phy *x)
+{
+	struct tegra_usb_phy *phy = container_of(x, struct tegra_usb_phy, u_phy);
+
+	if (phy_is_ulpi(phy))
+		clk_put(phy->clk);
+	else
+		utmip_pad_close(phy);
+	clk_disable_unprepare(phy->pll_u);
+	clk_put(phy->pll_u);
+	kfree(phy);
+}
+
+static int tegra_usb_phy_power_on(struct tegra_usb_phy *phy)
+{
+	if (phy_is_ulpi(phy))
+		return ulpi_phy_power_on(phy);
+	else
+		return utmi_phy_power_on(phy);
+}
+
+static int tegra_usb_phy_power_off(struct tegra_usb_phy *phy)
+{
+	if (phy_is_ulpi(phy))
+		return ulpi_phy_power_off(phy);
+	else
+		return utmi_phy_power_off(phy);
+}
+
+static int	tegra_usb_phy_suspend(struct usb_phy *x, int suspend)
+{
+	struct tegra_usb_phy *phy = container_of(x, struct tegra_usb_phy, u_phy);
+	if (suspend)
+		return tegra_usb_phy_power_off(phy);
+	else
+		return tegra_usb_phy_power_on(phy);
 }
 
 struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
 	void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode)
 {
 	struct tegra_usb_phy *phy;
-	struct tegra_ulpi_config *ulpi_config;
 	unsigned long parent_rate;
 	int i;
 	int err;
···
 	phy->regs = regs;
 	phy->config = config;
 	phy->mode = phy_mode;
+	phy->dev = dev;
 
 	if (!phy->config) {
 		if (phy_is_ulpi(phy)) {
···
 		goto err1;
 	}
 
-	if (phy_is_ulpi(phy)) {
-		ulpi_config = config;
-		phy->clk = clk_get_sys(NULL, ulpi_config->clk);
-		if (IS_ERR(phy->clk)) {
-			pr_err("%s: can't get ulpi clock\n", __func__);
-			err = -ENXIO;
-			goto err1;
-		}
-		if (!gpio_is_valid(ulpi_config->reset_gpio))
-			ulpi_config->reset_gpio =
-				of_get_named_gpio(dev->of_node,
-						  "nvidia,phy-reset-gpio", 0);
-		if (!gpio_is_valid(ulpi_config->reset_gpio)) {
-			pr_err("%s: invalid reset gpio: %d\n", __func__,
-			       ulpi_config->reset_gpio);
-			err = -EINVAL;
-			goto err1;
-		}
-		gpio_request(ulpi_config->reset_gpio, "ulpi_phy_reset_b");
-		gpio_direction_output(ulpi_config->reset_gpio, 0);
-		phy->ulpi = otg_ulpi_create(&ulpi_viewport_access_ops, 0);
-		phy->ulpi->io_priv = regs + ULPI_VIEWPORT;
-	} else {
-		err = utmip_pad_open(phy);
-		if (err < 0)
-			goto err1;
-	}
+	phy->u_phy.init = tegra_phy_init;
+	phy->u_phy.shutdown = tegra_usb_phy_close;
+	phy->u_phy.set_suspend = tegra_usb_phy_suspend;
 
 	return phy;
 
···
 	return ERR_PTR(err);
 }
 EXPORT_SYMBOL_GPL(tegra_usb_phy_open);
-
-int tegra_usb_phy_power_on(struct tegra_usb_phy *phy)
-{
-	if (phy_is_ulpi(phy))
-		return ulpi_phy_power_on(phy);
-	else
-		return utmi_phy_power_on(phy);
-}
-EXPORT_SYMBOL_GPL(tegra_usb_phy_power_on);
-
-void tegra_usb_phy_power_off(struct tegra_usb_phy *phy)
-{
-	if (phy_is_ulpi(phy))
-		ulpi_phy_power_off(phy);
-	else
-		utmi_phy_power_off(phy);
-}
-EXPORT_SYMBOL_GPL(tegra_usb_phy_power_off);
 
 void tegra_usb_phy_preresume(struct tegra_usb_phy *phy)
 {
···
 		utmi_phy_clk_enable(phy);
 }
 EXPORT_SYMBOL_GPL(tegra_usb_phy_clk_enable);
-
-void tegra_usb_phy_close(struct tegra_usb_phy *phy)
-{
-	if (phy_is_ulpi(phy))
-		clk_put(phy->clk);
-	else
-		utmip_pad_close(phy);
-	clk_disable_unprepare(phy->pll_u);
-	clk_put(phy->pll_u);
-	kfree(phy);
-}
-EXPORT_SYMBOL_GPL(tegra_usb_phy_close);

drivers/usb/dwc3/core.c

···
 #include <linux/dma-mapping.h>
 #include <linux/of.h>
 
+#include <linux/usb/otg.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
 
···
 	reg |= DWC3_GUSB2PHYCFG_PHYSOFTRST;
 	dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
 
+	usb_phy_init(dwc->usb2_phy);
+	usb_phy_init(dwc->usb3_phy);
 	mdelay(100);
 
 	/* Clear USB3 PHY reset */
···
 	if (!regs) {
 		dev_err(dev, "ioremap failed\n");
 		return -ENOMEM;
+	}
+
+	dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
+	if (IS_ERR_OR_NULL(dwc->usb2_phy)) {
+		dev_err(dev, "no usb2 phy configured\n");
+		return -EPROBE_DEFER;
+	}
+
+	dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
+	if (IS_ERR_OR_NULL(dwc->usb3_phy)) {
+		dev_err(dev, "no usb3 phy configured\n");
+		return -EPROBE_DEFER;
 	}
 
 	spin_lock_init(&dwc->lock);

drivers/usb/dwc3/core.h

···
  * @maximum_speed: maximum speed requested (mainly for testing purposes)
  * @revision: revision register contents
  * @mode: mode of operation
+ * @usb2_phy: pointer to USB2 PHY
+ * @usb3_phy: pointer to USB3 PHY
  * @is_selfpowered: true when we are selfpowered
  * @three_stage_setup: set if we perform a three phase setup
  * @ep0_bounced: true when we used bounce buffer
···
 
 	struct usb_gadget	gadget;
 	struct usb_gadget_driver *gadget_driver;
+
+	struct usb_phy		*usb2_phy;
+	struct usb_phy		*usb3_phy;
 
 	void __iomem		*regs;
 	size_t			regs_size;

drivers/usb/dwc3/dwc3-exynos.c

···
 #include <linux/platform_data/dwc3-exynos.h>
 #include <linux/dma-mapping.h>
 #include <linux/clk.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/nop-usb-xceiv.h>
 
 #include "core.h"
 
 struct dwc3_exynos {
 	struct platform_device	*dwc3;
+	struct platform_device	*usb2_phy;
+	struct platform_device	*usb3_phy;
 	struct device		*dev;
 
 	struct clk		*clk;
 };
+
+static int __devinit dwc3_exynos_register_phys(struct dwc3_exynos *exynos)
+{
+	struct nop_usb_xceiv_platform_data pdata;
+	struct platform_device	*pdev;
+	int			ret;
+
+	memset(&pdata, 0x00, sizeof(pdata));
+
+	pdev = platform_device_alloc("nop_usb_xceiv", 0);
+	if (!pdev)
+		return -ENOMEM;
+
+	exynos->usb2_phy = pdev;
+	pdata.type = USB_PHY_TYPE_USB2;
+
+	ret = platform_device_add_data(exynos->usb2_phy, &pdata, sizeof(pdata));
+	if (ret)
+		goto err1;
+
+	pdev = platform_device_alloc("nop_usb_xceiv", 1);
+	if (!pdev) {
+		ret = -ENOMEM;
+		goto err1;
+	}
+
+	exynos->usb3_phy = pdev;
+	pdata.type = USB_PHY_TYPE_USB3;
+
+	ret = platform_device_add_data(exynos->usb3_phy, &pdata, sizeof(pdata));
+	if (ret)
+		goto err2;
+
+	ret = platform_device_add(exynos->usb2_phy);
+	if (ret)
+		goto err2;
+
+	ret = platform_device_add(exynos->usb3_phy);
+	if (ret)
+		goto err3;
+
+	return 0;
+
+err3:
+	platform_device_del(exynos->usb2_phy);
+
+err2:
+	platform_device_put(exynos->usb3_phy);
+
+err1:
+	platform_device_put(exynos->usb2_phy);
+
+	return ret;
+}
 
 static int __devinit dwc3_exynos_probe(struct platform_device *pdev)
 {
···
 	devid = dwc3_get_device_id();
 	if (devid < 0)
 		goto err1;
+
+	ret = dwc3_exynos_register_phys(exynos);
+	if (ret) {
+		dev_err(&pdev->dev, "couldn't register PHYs\n");
+		goto err1;
+	}
 
 	dwc3 = platform_device_alloc("dwc3", devid);
 	if (!dwc3) {
···
 	struct dwc3_exynos_data *pdata = pdev->dev.platform_data;
 
 	platform_device_unregister(exynos->dwc3);
+	platform_device_unregister(exynos->usb2_phy);
+	platform_device_unregister(exynos->usb3_phy);
 
 	dwc3_put_device_id(exynos->dwc3->id);
 

drivers/usb/dwc3/dwc3-omap.c

···
 #include <linux/io.h>
 #include <linux/of.h>
 
+#include <linux/usb/otg.h>
+#include <linux/usb/nop-usb-xceiv.h>
+
 #include "core.h"
 
 /*
···
 	spinlock_t		lock;
 
 	struct platform_device	*dwc3;
+	struct platform_device	*usb2_phy;
+	struct platform_device	*usb3_phy;
 	struct device		*dev;
 
 	int			irq;
···
 	writel(value, base + offset);
 }
 
+static int __devinit dwc3_omap_register_phys(struct dwc3_omap *omap)
+{
+	struct nop_usb_xceiv_platform_data pdata;
+	struct platform_device	*pdev;
+	int			ret;
+
+	memset(&pdata, 0x00, sizeof(pdata));
+
+	pdev = platform_device_alloc("nop_usb_xceiv", 0);
+	if (!pdev)
+		return -ENOMEM;
+
+	omap->usb2_phy = pdev;
+	pdata.type = USB_PHY_TYPE_USB2;
+
+	ret = platform_device_add_data(omap->usb2_phy, &pdata, sizeof(pdata));
+	if (ret)
+		goto err1;
+
+	pdev = platform_device_alloc("nop_usb_xceiv", 1);
+	if (!pdev) {
+		ret = -ENOMEM;
+		goto err1;
+	}
+
+	omap->usb3_phy = pdev;
+	pdata.type = USB_PHY_TYPE_USB3;
+
+	ret = platform_device_add_data(omap->usb3_phy, &pdata, sizeof(pdata));
+	if (ret)
+		goto err2;
+
+	ret = platform_device_add(omap->usb2_phy);
+	if (ret)
+		goto err2;
+
+	ret = platform_device_add(omap->usb3_phy);
+	if (ret)
+		goto err3;
+
+	return 0;
+
+err3:
+	platform_device_del(omap->usb2_phy);
+
+err2:
+	platform_device_put(omap->usb3_phy);
+
+err1:
+	platform_device_put(omap->usb2_phy);
+
+	return ret;
+}
 
 static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
 {
···
 	if (!base) {
 		dev_err(dev, "ioremap failed\n");
 		return -ENOMEM;
+	}
+
+	ret = dwc3_omap_register_phys(omap);
+	if (ret) {
+		dev_err(dev, "couldn't register PHYs\n");
+		return ret;
 	}
 
 	devid = dwc3_get_device_id();
···
 	struct dwc3_omap	*omap = platform_get_drvdata(pdev);
 
 	platform_device_unregister(omap->dwc3);
+	platform_device_unregister(omap->usb2_phy);
+	platform_device_unregister(omap->usb3_phy);
 
 	dwc3_put_device_id(omap->dwc3->id);
 

drivers/usb/dwc3/dwc3-pci.c

···
 #include <linux/pci.h>
 #include <linux/platform_device.h>
 
+#include <linux/usb/otg.h>
+#include <linux/usb/nop-usb-xceiv.h>
+
 #include "core.h"
 
 /* FIXME define these in <linux/pci_ids.h> */
···
 struct dwc3_pci {
 	struct device		*dev;
 	struct platform_device	*dwc3;
+	struct platform_device	*usb2_phy;
+	struct platform_device	*usb3_phy;
 };
+
+static int __devinit dwc3_pci_register_phys(struct dwc3_pci *glue)
+{
+	struct nop_usb_xceiv_platform_data pdata;
+	struct platform_device	*pdev;
+	int			ret;
+
+	memset(&pdata, 0x00, sizeof(pdata));
+
+	pdev = platform_device_alloc("nop_usb_xceiv", 0);
+	if (!pdev)
+		return -ENOMEM;
+
+	glue->usb2_phy = pdev;
+	pdata.type = USB_PHY_TYPE_USB2;
+
+	ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
+	if (ret)
+		goto err1;
+
+	pdev = platform_device_alloc("nop_usb_xceiv", 1);
+	if (!pdev) {
+		ret = -ENOMEM;
+		goto err1;
+	}
+
+	glue->usb3_phy = pdev;
+	pdata.type = USB_PHY_TYPE_USB3;
+
+	ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata));
+	if (ret)
+		goto err2;
+
+	ret = platform_device_add(glue->usb2_phy);
+	if (ret)
+		goto err2;
+
+	ret = platform_device_add(glue->usb3_phy);
+	if (ret)
+		goto err3;
+
+	return 0;
+
+err3:
+	platform_device_del(glue->usb2_phy);
+
+err2:
+	platform_device_put(glue->usb3_phy);
+
+err1:
+	platform_device_put(glue->usb2_phy);
+
+	return ret;
+}
 
 static int __devinit dwc3_pci_probe(struct pci_dev *pci,
 		const struct pci_device_id *id)
···
 
 	pci_set_power_state(pci, PCI_D0);
 	pci_set_master(pci);
+
+	ret = dwc3_pci_register_phys(glue);
+	if (ret) {
+		dev_err(dev, "couldn't register PHYs\n");
+		return ret;
+	}
 
 	devid = dwc3_get_device_id();
 	if (devid < 0) {
···
 {
 	struct dwc3_pci	*glue = pci_get_drvdata(pci);
 
+	platform_device_unregister(glue->usb2_phy);
+	platform_device_unregister(glue->usb3_phy);
 	dwc3_put_device_id(glue->dwc3->id);
 	platform_device_unregister(glue->dwc3);
 	pci_set_drvdata(pci, NULL);

drivers/usb/host/ehci-tegra.c

···
 #include <linux/of_gpio.h>
 #include <linux/pm_runtime.h>
 
-#include <mach/usb_phy.h>
+#include <linux/usb/tegra_usb_phy.h>
 #include <mach/iomap.h>
 
 #define TEGRA_USB_DMA_ALIGN 32
···
 
 	clk_prepare_enable(tegra->emc_clk);
 	clk_prepare_enable(tegra->clk);
-	tegra_usb_phy_power_on(tegra->phy);
+	usb_phy_set_suspend(&tegra->phy->u_phy, 0);
 	tegra->host_resumed = 1;
 }
 
···
 	struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller);
 
 	tegra->host_resumed = 0;
-	tegra_usb_phy_power_off(tegra->phy);
+	usb_phy_set_suspend(&tegra->phy->u_phy, 1);
 	clk_disable_unprepare(tegra->clk);
 	clk_disable_unprepare(tegra->emc_clk);
 }
···
 		goto fail_io;
 	}
 
-	err = tegra_usb_phy_power_on(tegra->phy);
+	usb_phy_init(&tegra->phy->u_phy);
+
+	err = usb_phy_set_suspend(&tegra->phy->u_phy, 0);
 	if (err) {
 		dev_err(&pdev->dev, "Failed to power on the phy\n");
 		goto fail;
···
 	if (!IS_ERR_OR_NULL(tegra->transceiver))
 		otg_set_host(tegra->transceiver->otg, NULL);
 #endif
-	tegra_usb_phy_close(tegra->phy);
+	usb_phy_shutdown(&tegra->phy->u_phy);
 fail_io:
 	clk_disable_unprepare(tegra->emc_clk);
 fail_emc_clk:
···
 #endif
 
 	usb_remove_hcd(hcd);
-
-	tegra_usb_phy_close(tegra->phy);
-
 	usb_put_hcd(hcd);
+
+	usb_phy_shutdown(&tegra->phy->u_phy);
 
 	clk_disable_unprepare(tegra->clk);
 

drivers/usb/musb/am35x.c

···
 #include <linux/io.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
+#include <linux/usb/nop-usb-xceiv.h>
 
 #include <plat/usb.h>
 

drivers/usb/musb/blackfin.c

···
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <linux/prefetch.h>
+#include <linux/usb/nop-usb-xceiv.h>
 
 #include <asm/cacheflush.h>
 

drivers/usb/musb/da8xx.c

···
 #include <linux/io.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
+#include <linux/usb/nop-usb-xceiv.h>
 
 #include <mach/da8xx.h>
 #include <mach/usb.h>

drivers/usb/musb/davinci.c

···
 #include <linux/gpio.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
+#include <linux/usb/nop-usb-xceiv.h>
 
 #include <mach/cputype.h>
 #include <mach/hardware.h>

drivers/usb/musb/musb_dsps.c

···
 #include <linux/dma-mapping.h>
 #include <linux/pm_runtime.h>
 #include <linux/module.h>
+#include <linux/usb/nop-usb-xceiv.h>
 
 #include <linux/of.h>
 #include <linux/of_device.h>

drivers/usb/musb/tusb6010.c

···
 #include <linux/irq.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
+#include <linux/usb/nop-usb-xceiv.h>
 
 #include "musb_core.h"
 

drivers/usb/otg/Kconfig

···
 
 config TWL6030_USB
 	tristate "TWL6030 USB Transceiver Driver"
-	depends on TWL4030_CORE
+	depends on TWL4030_CORE && OMAP_USB2
 	select USB_OTG_UTILS
 	help
 	  Enable this to support the USB OTG transceiver on TWL6030

drivers/usb/otg/fsl_otg.c

···
  */
 static int fsl_otg_set_host(struct usb_otg *otg, struct usb_bus *host)
 {
-	struct fsl_otg *otg_dev = container_of(otg->phy, struct fsl_otg, phy);
+	struct fsl_otg *otg_dev;
 
-	if (!otg || otg_dev != fsl_otg_dev)
+	if (!otg)
+		return -ENODEV;
+
+	otg_dev = container_of(otg->phy, struct fsl_otg, phy);
+	if (otg_dev != fsl_otg_dev)
 		return -ENODEV;
 
 	otg->host = host;
···
 static int fsl_otg_set_peripheral(struct usb_otg *otg,
 					struct usb_gadget *gadget)
 {
-	struct fsl_otg *otg_dev = container_of(otg->phy, struct fsl_otg, phy);
+	struct fsl_otg *otg_dev;
 
+	if (!otg)
+		return -ENODEV;
+
+	otg_dev = container_of(otg->phy, struct fsl_otg, phy);
 	VDBG("otg_dev 0x%x\n", (int)otg_dev);
 	VDBG("fsl_otg_dev 0x%x\n", (int)fsl_otg_dev);
-
-	if (!otg || otg_dev != fsl_otg_dev)
+	if (otg_dev != fsl_otg_dev)
 		return -ENODEV;
 
 	if (!gadget) {
···
 /* B-device start SRP */
 static int fsl_otg_start_srp(struct usb_otg *otg)
 {
-	struct fsl_otg *otg_dev = container_of(otg->phy, struct fsl_otg, phy);
+	struct fsl_otg *otg_dev;
 
-	if (!otg || otg_dev != fsl_otg_dev
-	    || otg->phy->state != OTG_STATE_B_IDLE)
+	if (!otg || otg->phy->state != OTG_STATE_B_IDLE)
+		return -ENODEV;
+
+	otg_dev = container_of(otg->phy, struct fsl_otg, phy);
+	if (otg_dev != fsl_otg_dev)
 		return -ENODEV;
 
 	otg_dev->fsm.b_bus_req = 1;
···
 /* A_host suspend will call this function to start hnp */
 static int fsl_otg_start_hnp(struct usb_otg *otg)
 {
-	struct fsl_otg *otg_dev = container_of(otg->phy, struct fsl_otg, phy);
+	struct fsl_otg *otg_dev;
 
-	if (!otg || otg_dev != fsl_otg_dev)
+	if (!otg)
+		return -ENODEV;
+
+	otg_dev = container_of(otg->phy, struct fsl_otg, phy);
+	if (otg_dev != fsl_otg_dev)
 		return -ENODEV;
 
 	DBG("start_hnp...n");

drivers/usb/otg/mxs-phy.c

···
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/io.h>
+#include <linux/workqueue.h>
 
 #define DRIVER_NAME "mxs_phy"
 
···
 #define BM_USBPHY_CTRL_ENUTMILEVEL2		BIT(14)
 #define BM_USBPHY_CTRL_ENHOSTDISCONDETECT	BIT(1)
 
+/*
+ * Amount of delay in miliseconds to safely enable ENHOSTDISCONDETECT bit
+ * so that connection and reset processing can be completed for the root hub.
+ */
+#define MXY_PHY_ENHOSTDISCONDETECT_DELAY	250
+
 struct mxs_phy {
 	struct usb_phy phy;
 	struct clk *clk;
+	struct delayed_work enhostdiscondetect_work;
 };
 
 #define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
···
 
 	clk_prepare_enable(mxs_phy->clk);
 	mxs_phy_hw_init(mxs_phy);
+	INIT_DELAYED_WORK(&mxs_phy->enhostdiscondetect_work, NULL);
 
 	return 0;
 }
···
 	clk_disable_unprepare(mxs_phy->clk);
 }
 
+static void mxs_phy_enhostdiscondetect_delay(struct work_struct *ws)
+{
+	struct mxs_phy *mxs_phy = container_of(ws, struct mxs_phy,
+						enhostdiscondetect_work.work);
+
+	/* Enable HOSTDISCONDETECT after delay. */
+	dev_dbg(mxs_phy->phy.dev, "Setting ENHOSTDISCONDETECT\n");
+	writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+				mxs_phy->phy.io_priv + HW_USBPHY_CTRL_SET);
+}
+
 static int mxs_phy_on_connect(struct usb_phy *phy, int port)
 {
+	struct mxs_phy *mxs_phy = to_mxs_phy(phy);
+
 	dev_dbg(phy->dev, "Connect on port %d\n", port);
 
-	mxs_phy_hw_init(to_mxs_phy(phy));
-	writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
-			phy->io_priv + HW_USBPHY_CTRL_SET);
+	mxs_phy_hw_init(mxs_phy);
+
+	/*
+	 * Delay enabling ENHOSTDISCONDETECT so that connection and
+	 * reset processing can be completed for the root hub.
+	 */
+	dev_dbg(phy->dev, "Delaying setting ENHOSTDISCONDETECT\n");
+	PREPARE_DELAYED_WORK(&mxs_phy->enhostdiscondetect_work,
+			mxs_phy_enhostdiscondetect_delay);
+	schedule_delayed_work(&mxs_phy->enhostdiscondetect_work,
+			msecs_to_jiffies(MXY_PHY_ENHOSTDISCONDETECT_DELAY));
 
 	return 0;
 }
···
 {
 	dev_dbg(phy->dev, "Disconnect on port %d\n", port);
 
+	/* No need to delay before clearing ENHOSTDISCONDETECT. */
+	dev_dbg(phy->dev, "Clearing ENHOSTDISCONDETECT\n");
 	writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
 			phy->io_priv + HW_USBPHY_CTRL_CLR);
 

drivers/usb/otg/nop-usb-xceiv.c

···
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <linux/usb/otg.h>
+#include <linux/usb/nop-usb-xceiv.h>
 #include <linux/slab.h>
 
 struct nop_usb_xceiv {
···
 
 static int __devinit nop_usb_xceiv_probe(struct platform_device *pdev)
 {
+	struct nop_usb_xceiv_platform_data *pdata = pdev->dev.platform_data;
 	struct nop_usb_xceiv	*nop;
+	enum usb_phy_type	type = USB_PHY_TYPE_USB2;
 	int err;
 
 	nop = kzalloc(sizeof *nop, GFP_KERNEL);
···
 		return -ENOMEM;
 	}
 
+	if (pdata)
+		type = pdata->type;
+
 	nop->dev		= &pdev->dev;
 	nop->phy.dev		= nop->dev;
 	nop->phy.label		= "nop-xceiv";
···
 	nop->phy.otg->set_host		= nop_set_host;
 	nop->phy.otg->set_peripheral	= nop_set_peripheral;
 
-	err = usb_add_phy(&nop->phy, USB_PHY_TYPE_USB2);
+	err = usb_add_phy(&nop->phy, type);
 	if (err) {
 		dev_err(&pdev->dev, "can't register transceiver, err: %d\n",
 			err);

drivers/usb/otg/otg.c

···
 	unsigned long	flags;
 	struct usb_phy	*phy;
 
-	if (x && x->type != USB_PHY_TYPE_UNDEFINED) {
+	if (x->type != USB_PHY_TYPE_UNDEFINED) {
 		dev_err(x->dev, "not accepting initialized PHY %s\n", x->label);
 		return -EINVAL;
 	}

drivers/usb/otg/twl4030-usb.c

···
 	struct twl4030_usb	*twl;
 	int			status, err;
 	struct usb_otg		*otg;
-
-	if (!pdata) {
-		dev_dbg(&pdev->dev, "platform_data not available\n");
-		return -EINVAL;
-	}
+	struct device_node	*np = pdev->dev.of_node;
 
 	twl = devm_kzalloc(&pdev->dev, sizeof *twl, GFP_KERNEL);
 	if (!twl)
 		return -ENOMEM;
+
+	if (np)
+		of_property_read_u32(np, "usb_mode",
+				(enum twl4030_usb_mode *)&twl->usb_mode);
+	else if (pdata)
+		twl->usb_mode = pdata->usb_mode;
+	else {
+		dev_err(&pdev->dev, "twl4030 initialized without pdata\n");
+		return -EINVAL;
+	}
 
 	otg = devm_kzalloc(&pdev->dev, sizeof *otg, GFP_KERNEL);
 	if (!otg)
···
 
 	twl->dev		= &pdev->dev;
 	twl->irq		= platform_get_irq(pdev, 0);
-	twl->usb_mode		= pdata->usb_mode;
 	twl->vbus_supplied	= false;
 	twl->asleep		= 1;
 	twl->linkstat		= OMAP_MUSB_UNKNOWN;
···
 	return 0;
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id twl4030_usb_id_table[] = {
+	{ .compatible = "ti,twl4030-usb" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, twl4030_usb_id_table);
+#endif
+
 static struct platform_driver twl4030_usb_driver = {
 	.probe		= twl4030_usb_probe,
 	.remove		= __exit_p(twl4030_usb_remove),
 	.driver		= {
 		.name	= "twl4030_usb",
 		.owner	= THIS_MODULE,
+		.of_match_table = of_match_ptr(twl4030_usb_id_table),
 	},
 };
 

drivers/usb/otg/twl6030-usb.c

···
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
-#include <linux/usb/otg.h>
 #include <linux/usb/musb-omap.h>
+#include <linux/usb/phy_companion.h>
+#include <linux/usb/omap_usb.h>
 #include <linux/i2c/twl.h>
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
···
 #define	VBUS_DET			BIT(2)
 
 struct twl6030_usb {
-	struct usb_phy		phy;
+	struct phy_companion	comparator;
 	struct device		*dev;
 
 	/* for vbus reporting with irqs disabled */
···
 	u8			asleep;
 	bool			irq_enabled;
 	bool			vbus_enable;
-	unsigned long		features;
+	const char		*regulator;
 };
 
-#define phy_to_twl(x)		container_of((x), struct twl6030_usb, phy)
+#define	comparator_to_twl(x) container_of((x), struct twl6030_usb, comparator)
 
 /*-------------------------------------------------------------------------*/
 
···
 	return ret;
 }
 
-static int twl6030_phy_init(struct usb_phy *x)
+static int twl6030_start_srp(struct phy_companion *comparator)
 {
-	struct twl6030_usb *twl;
-	struct device *dev;
-	struct twl4030_usb_data *pdata;
-
-	twl = phy_to_twl(x);
-	dev  = twl->dev;
-	pdata = dev->platform_data;
-
-	if (twl->linkstat == OMAP_MUSB_ID_GROUND)
-		pdata->phy_power(twl->dev, 1, 1);
-	else
-		pdata->phy_power(twl->dev, 0, 1);
-
-	return 0;
-}
-
-static void twl6030_phy_shutdown(struct usb_phy *x)
-{
-	struct twl6030_usb *twl;
-	struct device *dev;
-	struct twl4030_usb_data *pdata;
-
-	twl = phy_to_twl(x);
-	dev  = twl->dev;
-	pdata = dev->platform_data;
-	pdata->phy_power(twl->dev, 0, 0);
-}
-
-static int twl6030_phy_suspend(struct usb_phy *x, int suspend)
-{
-	struct twl6030_usb *twl = phy_to_twl(x);
-	struct device *dev = twl->dev;
-	struct twl4030_usb_data *pdata = dev->platform_data;
-
-	pdata->phy_suspend(dev, suspend);
-
-	return 0;
-}
-
-static int twl6030_start_srp(struct usb_otg *otg)
-{
-	struct twl6030_usb *twl = phy_to_twl(otg->phy);
+	struct twl6030_usb *twl = comparator_to_twl(comparator);
 
 	twl6030_writeb(twl, TWL_MODULE_USB, 0x24, USB_VBUS_CTRL_SET);
 	twl6030_writeb(twl, TWL_MODULE_USB, 0x84, USB_VBUS_CTRL_SET);
···
 
 static int twl6030_usb_ldo_init(struct twl6030_usb *twl)
 {
-	char *regulator_name;
-
-	if (twl->features & TWL6025_SUBCLASS)
-		regulator_name = "ldousb";
-	else
-		regulator_name = "vusb";
-
 	/* Set to OTG_REV 1.3 and turn on the ID_WAKEUP_COMP */
 	twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x1, TWL6030_BACKUP_REG);
 
···
 	/* Program MISC2 register and set bit VUSB_IN_VBAT */
 	twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x10, TWL6030_MISC2);
 
-	twl->usb3v3 = regulator_get(twl->dev, regulator_name);
+	twl->usb3v3 = regulator_get(twl->dev, twl->regulator);
 	if (IS_ERR(twl->usb3v3))
 		return -ENODEV;
 
···
 	return IRQ_HANDLED;
 }
 
-static int twl6030_set_peripheral(struct usb_otg *otg,
-		struct usb_gadget *gadget)
+static int twl6030_enable_irq(struct twl6030_usb *twl)
 {
-	if (!otg)
-		return -ENODEV;
-
-	otg->gadget = gadget;
-	if (!gadget)
-		otg->phy->state = OTG_STATE_UNDEFINED;
-
-	return 0;
-}
-
-static int twl6030_enable_irq(struct usb_phy *x)
-{
-	struct twl6030_usb *twl = phy_to_twl(x);
-
 	twl6030_writeb(twl, TWL_MODULE_USB, 0x1, USB_ID_INT_EN_HI_SET);
 	twl6030_interrupt_unmask(0x05, REG_INT_MSK_LINE_C);
 	twl6030_interrupt_unmask(0x05, REG_INT_MSK_STS_C);
···
 							CHARGERUSB_CTRL1);
 }
 
-static int twl6030_set_vbus(struct usb_otg *otg, bool enabled)
+static int twl6030_set_vbus(struct phy_companion *comparator, bool enabled)
 {
-	struct twl6030_usb *twl = phy_to_twl(otg->phy);
+	struct twl6030_usb *twl = comparator_to_twl(comparator);
 
 	twl->vbus_enable = enabled;
 	schedule_work(&twl->set_vbus_work);
···
 	return 0;
 }
 
-static int twl6030_set_host(struct usb_otg *otg, struct usb_bus *host)
-{
-	if (!otg)
-		return -ENODEV;
-
-	otg->host = host;
-	if (!host)
-		otg->phy->state = OTG_STATE_UNDEFINED;
-	return 0;
-}
-
 static int __devinit twl6030_usb_probe(struct platform_device *pdev)
 {
+	u32 ret;
 	struct twl6030_usb	*twl;
 	int			status, err;
-	struct twl4030_usb_data *pdata;
-	struct usb_otg		*otg;
-	struct device *dev = &pdev->dev;
-	pdata = dev->platform_data;
+	struct device_node	*np = pdev->dev.of_node;
+	struct device		*dev = &pdev->dev;
+	struct twl4030_usb_data	*pdata = dev->platform_data;
 
 	twl = devm_kzalloc(dev, sizeof *twl, GFP_KERNEL);
 	if (!twl)
 		return -ENOMEM;
 
-	otg = devm_kzalloc(dev, sizeof *otg, GFP_KERNEL);
-	if (!otg)
-		return -ENOMEM;
-
 	twl->dev		= &pdev->dev;
 	twl->irq1		= platform_get_irq(pdev, 0);
 	twl->irq2		= platform_get_irq(pdev, 1);
-	twl->features		= pdata->features;
 	twl->linkstat		= OMAP_MUSB_UNKNOWN;
 
-	twl->phy.dev		= twl->dev;
-	twl->phy.label		= "twl6030";
-	twl->phy.otg		= otg;
-	twl->phy.init		= twl6030_phy_init;
-	twl->phy.shutdown	= twl6030_phy_shutdown;
-	twl->phy.set_suspend	= twl6030_phy_suspend;
+	twl->comparator.set_vbus	= twl6030_set_vbus;
+	twl->comparator.start_srp	= twl6030_start_srp;
 
-	otg->phy		= &twl->phy;
-	otg->set_host		= twl6030_set_host;
-	otg->set_peripheral	= twl6030_set_peripheral;
-	otg->set_vbus		= twl6030_set_vbus;
-	otg->start_srp		= twl6030_start_srp;
+	ret = omap_usb2_set_comparator(&twl->comparator);
+	if (ret == -ENODEV) {
+		dev_info(&pdev->dev, "phy not ready, deferring probe");
+		return -EPROBE_DEFER;
+	}
+
+	if (np) {
+		twl->regulator = "usb";
+	} else if (pdata) {
+		if (pdata->features & TWL6025_SUBCLASS)
+			twl->regulator = "ldousb";
+		else
+			twl->regulator = "vusb";
+	} else {
+		dev_err(&pdev->dev, "twl6030 initialized without pdata\n");
+		return -EINVAL;
+	}
 
 	/* init spinlock for workqueue */
 	spin_lock_init(&twl->lock);
···
 		dev_err(&pdev->dev, "ldo init failed\n");
 		return err;
 	}
-	usb_add_phy(&twl->phy, USB_PHY_TYPE_USB2);
 
 	platform_set_drvdata(pdev, twl);
 	if (device_create_file(&pdev->dev, &dev_attr_vbus))
···
 	}
 
 	twl->asleep = 0;
-	pdata->phy_init(dev);
-	twl6030_phy_suspend(&twl->phy, 0);
-	twl6030_enable_irq(&twl->phy);
+	twl6030_enable_irq(twl);
 	dev_info(&pdev->dev, "Initialized TWL6030 USB module\n");
 
 	return 0;
···
 {
 	struct twl6030_usb *twl = platform_get_drvdata(pdev);
 
-	struct twl4030_usb_data *pdata;
-	struct device *dev = &pdev->dev;
-	pdata = dev->platform_data;
-
 	twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK,
 		REG_INT_MSK_LINE_C);
 	twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK,
···
 	free_irq(twl->irq1, twl);
 	free_irq(twl->irq2, twl);
 	regulator_put(twl->usb3v3);
-	pdata->phy_exit(twl->dev);
 	device_remove_file(twl->dev, &dev_attr_vbus);
 	cancel_work_sync(&twl->set_vbus_work);
 
 	return 0;
 }
+
+#ifdef CONFIG_OF
+static const struct of_device_id twl6030_usb_id_table[] = {
+	{ .compatible = "ti,twl6030-usb" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, twl6030_usb_id_table);
+#endif
 
 static struct platform_driver twl6030_usb_driver = {
 	.probe		= twl6030_usb_probe,
···
 	.driver		= {
 		.name	= "twl6030_usb",
 		.owner	= THIS_MODULE,
+		.of_match_table = of_match_ptr(twl6030_usb_id_table),
 	},
 };
 

drivers/usb/phy/Kconfig

···
 comment "USB Physical Layer drivers"
 	depends on USB || USB_GADGET
 
+config OMAP_USB2
+	tristate "OMAP USB2 PHY Driver"
+	select USB_OTG_UTILS
+	help
+	  Enable this to support the transceiver that is part of SOC. This
+	  driver takes care of all the PHY functionality apart from comparator.
+	  The USB OTG controller communicates with the comparator using this
+	  driver.
+
 config USB_ISP1301
 	tristate "NXP ISP1301 USB transceiver support"
 	depends on USB || USB_GADGET
···
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called isp1301.
+
+config MV_U3D_PHY
+	bool "Marvell USB 3.0 PHY controller Driver"
+	depends on USB_MV_U3D
+	select USB_OTG_UTILS
+	help
+	  Enable this to support Marvell USB 3.0 phy controller for Marvell
+	  SoC.

drivers/usb/phy/Makefile

···
 
 ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG
 
+obj-$(CONFIG_OMAP_USB2)			+= omap-usb2.o
 obj-$(CONFIG_USB_ISP1301)		+= isp1301.o
+obj-$(CONFIG_MV_U3D_PHY)		+= mv_u3d_phy.o
+obj-$(CONFIG_USB_EHCI_TEGRA)	+= tegra_usb_phy.o

drivers/usb/phy/mv_u3d_phy.c

···
+/*
+ * Copyright (C) 2011 Marvell International Ltd. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/usb/otg.h>
+#include <linux/platform_data/mv_usb.h>
+
+#include "mv_u3d_phy.h"
+
+/*
+ * struct mv_u3d_phy - transceiver driver state
+ * @phy: transceiver structure
+ * @dev: The parent device supplied to the probe function
+ * @clk: usb phy clock
+ * @base: usb phy register memory base
+ */
+struct mv_u3d_phy {
+	struct usb_phy	phy;
+	struct mv_usb_platform_data *plat;
+	struct device	*dev;
+	struct clk	*clk;
+	void __iomem	*base;
+};
+
+static u32 mv_u3d_phy_read(void __iomem *base, u32 reg)
+{
+	void __iomem *addr, *data;
+
+	addr = base;
+	data = base + 0x4;
+
+	writel_relaxed(reg, addr);
+	return readl_relaxed(data);
+}
+
+static void mv_u3d_phy_set(void __iomem *base, u32 reg, u32 value)
+{
+	void __iomem *addr, *data;
+	u32 tmp;
+
+	addr = base;
+	data = base + 0x4;
+
+	writel_relaxed(reg, addr);
+	tmp = readl_relaxed(data);
+	tmp |= value;
+	writel_relaxed(tmp, data);
+}
+
+static void mv_u3d_phy_clear(void __iomem *base, u32 reg, u32 value)
+{
+	void __iomem *addr, *data;
+	u32 tmp;
+
+	addr = base;
+	data = base + 0x4;
+
+	writel_relaxed(reg, addr);
+	tmp = readl_relaxed(data);
+	tmp &= ~value;
+	writel_relaxed(tmp, data);
+}
+
+static void mv_u3d_phy_write(void __iomem *base, u32 reg, u32 value)
+{
+	void __iomem *addr, *data;
+
+	addr = base;
+	data = base + 0x4;
+
+	writel_relaxed(reg, addr);
+	writel_relaxed(value, data);
+}
+
+void mv_u3d_phy_shutdown(struct usb_phy *phy)
+{
+	struct mv_u3d_phy *mv_u3d_phy;
+	void __iomem *base;
+	u32 val;
+
+	mv_u3d_phy = container_of(phy, struct mv_u3d_phy, phy);
+	base = mv_u3d_phy->base;
+
+	/* Power down Reference Analog current, bit 15
+	 * Power down PLL, bit 14
+	 * Power down Receiver, bit 13
+	 * Power down Transmitter, bit 12
+	 * of USB3_POWER_PLL_CONTROL register
+	 */
+	val = mv_u3d_phy_read(base, USB3_POWER_PLL_CONTROL);
+	val &= ~(USB3_POWER_PLL_CONTROL_PU);
+	mv_u3d_phy_write(base, USB3_POWER_PLL_CONTROL, val);
+
+	if (mv_u3d_phy->clk)
+		clk_disable(mv_u3d_phy->clk);
+}
+
+static int mv_u3d_phy_init(struct usb_phy *phy)
+{
+	struct mv_u3d_phy *mv_u3d_phy;
+	void __iomem *base;
+	u32 val, count;
+
+	/* enable usb3 phy */
+	mv_u3d_phy = container_of(phy, struct mv_u3d_phy, phy);
+
+	if (mv_u3d_phy->clk)
+		clk_enable(mv_u3d_phy->clk);
+
+	base = mv_u3d_phy->base;
+
+	val = mv_u3d_phy_read(base, USB3_POWER_PLL_CONTROL);
+	val &= ~(USB3_POWER_PLL_CONTROL_PU_MASK);
+	val |= 0xF << USB3_POWER_PLL_CONTROL_PU_SHIFT;
+	mv_u3d_phy_write(base, USB3_POWER_PLL_CONTROL, val);
+	udelay(100);
+
+	mv_u3d_phy_write(base, USB3_RESET_CONTROL,
+			USB3_RESET_CONTROL_RESET_PIPE);
+	udelay(100);
+
+	mv_u3d_phy_write(base, USB3_RESET_CONTROL,
+			USB3_RESET_CONTROL_RESET_PIPE
+			| USB3_RESET_CONTROL_RESET_PHY);
+	udelay(100);
+
+	val = mv_u3d_phy_read(base, USB3_POWER_PLL_CONTROL);
+	val &= ~(USB3_POWER_PLL_CONTROL_REF_FREF_SEL_MASK
+		| USB3_POWER_PLL_CONTROL_PHY_MODE_MASK);
+	val |=  (USB3_PLL_25MHZ << USB3_POWER_PLL_CONTROL_REF_FREF_SEL_SHIFT)
+		| (0x5 << USB3_POWER_PLL_CONTROL_PHY_MODE_SHIFT);
+	mv_u3d_phy_write(base, USB3_POWER_PLL_CONTROL, val);
+	udelay(100);
+
+	mv_u3d_phy_clear(base, USB3_KVCO_CALI_CONTROL,
+		USB3_KVCO_CALI_CONTROL_USE_MAX_PLL_RATE_MASK);
+	udelay(100);
+
+	val = mv_u3d_phy_read(base, USB3_SQUELCH_FFE);
+	val &= ~(USB3_SQUELCH_FFE_FFE_CAP_SEL_MASK
+		| USB3_SQUELCH_FFE_FFE_RES_SEL_MASK
+		| USB3_SQUELCH_FFE_SQ_THRESH_IN_MASK);
+	val |= ((0xD << USB3_SQUELCH_FFE_FFE_CAP_SEL_SHIFT)
+		| (0x7 << USB3_SQUELCH_FFE_FFE_RES_SEL_SHIFT)
+		| (0x8 << USB3_SQUELCH_FFE_SQ_THRESH_IN_SHIFT));
+	mv_u3d_phy_write(base, USB3_SQUELCH_FFE, val);
+	udelay(100);
+
+	val = mv_u3d_phy_read(base, USB3_GEN1_SET0);
+	val &= ~USB3_GEN1_SET0_G1_TX_SLEW_CTRL_EN_MASK;
+	val |= 1 << USB3_GEN1_SET0_G1_TX_EMPH_EN_SHIFT;
+	mv_u3d_phy_write(base, USB3_GEN1_SET0, val);
+	udelay(100);
+
+	val = mv_u3d_phy_read(base, USB3_GEN2_SET0);
+	val &= ~(USB3_GEN2_SET0_G2_TX_AMP_MASK
+		| USB3_GEN2_SET0_G2_TX_EMPH_AMP_MASK
+		| USB3_GEN2_SET0_G2_TX_SLEW_CTRL_EN_MASK);
+	val |= ((0x14 << USB3_GEN2_SET0_G2_TX_AMP_SHIFT)
+		| (1 << USB3_GEN2_SET0_G2_TX_AMP_ADJ_SHIFT)
+		| (0xA << USB3_GEN2_SET0_G2_TX_EMPH_AMP_SHIFT)
+		| (1 << USB3_GEN2_SET0_G2_TX_EMPH_EN_SHIFT));
+	mv_u3d_phy_write(base, USB3_GEN2_SET0, val);
+	udelay(100);
+
+	mv_u3d_phy_read(base, USB3_TX_EMPPH);
+	val &= ~(USB3_TX_EMPPH_AMP_MASK
+		| USB3_TX_EMPPH_EN_MASK
+		| USB3_TX_EMPPH_AMP_FORCE_MASK
+		| USB3_TX_EMPPH_PAR1_MASK
+		| USB3_TX_EMPPH_PAR2_MASK);
+	val |= ((0xB << USB3_TX_EMPPH_AMP_SHIFT)
+		| (1 << USB3_TX_EMPPH_EN_SHIFT)
+		| (1 << USB3_TX_EMPPH_AMP_FORCE_SHIFT)
+		| (0x1C << USB3_TX_EMPPH_PAR1_SHIFT)
+		| (1 << USB3_TX_EMPPH_PAR2_SHIFT));
+
+	mv_u3d_phy_write(base, USB3_TX_EMPPH, val);
+	udelay(100);
+
+	val = mv_u3d_phy_read(base, USB3_GEN2_SET1);
+	val &= ~(USB3_GEN2_SET1_G2_RX_SELMUPI_MASK
+		| USB3_GEN2_SET1_G2_RX_SELMUPF_MASK
+		| USB3_GEN2_SET1_G2_RX_SELMUFI_MASK
+		| USB3_GEN2_SET1_G2_RX_SELMUFF_MASK);
+	val |= ((1 << USB3_GEN2_SET1_G2_RX_SELMUPI_SHIFT)
+		| (1 << USB3_GEN2_SET1_G2_RX_SELMUPF_SHIFT)
+		| (1 << USB3_GEN2_SET1_G2_RX_SELMUFI_SHIFT)
+		| (1 << USB3_GEN2_SET1_G2_RX_SELMUFF_SHIFT));
+	mv_u3d_phy_write(base, USB3_GEN2_SET1, val);
+	udelay(100);
+
+	val = mv_u3d_phy_read(base, USB3_DIGITAL_LOOPBACK_EN);
+	val &= ~USB3_DIGITAL_LOOPBACK_EN_SEL_BITS_MASK;
+	val |= 1 << USB3_DIGITAL_LOOPBACK_EN_SEL_BITS_SHIFT;
+	mv_u3d_phy_write(base, USB3_DIGITAL_LOOPBACK_EN, val);
+	udelay(100);
+
+	val = mv_u3d_phy_read(base, USB3_IMPEDANCE_TX_SSC);
+	val &= ~USB3_IMPEDANCE_TX_SSC_SSC_AMP_MASK;
+	val |= 0xC << USB3_IMPEDANCE_TX_SSC_SSC_AMP_SHIFT;
+	mv_u3d_phy_write(base, USB3_IMPEDANCE_TX_SSC, val);
+	udelay(100);
+
+	val = mv_u3d_phy_read(base, USB3_IMPEDANCE_CALI_CTRL);
+	val &= ~USB3_IMPEDANCE_CALI_CTRL_IMP_CAL_THR_MASK;
+	val |= 0x4 << USB3_IMPEDANCE_CALI_CTRL_IMP_CAL_THR_SHIFT;
+	mv_u3d_phy_write(base, USB3_IMPEDANCE_CALI_CTRL, val);
+	udelay(100);
+
+	val = mv_u3d_phy_read(base, USB3_PHY_ISOLATION_MODE);
+	val &= ~(USB3_PHY_ISOLATION_MODE_PHY_GEN_RX_MASK
+		| USB3_PHY_ISOLATION_MODE_PHY_GEN_TX_MASK
+		| USB3_PHY_ISOLATION_MODE_TX_DRV_IDLE_MASK);
+	val |= ((1 << USB3_PHY_ISOLATION_MODE_PHY_GEN_RX_SHIFT)
+		| (1 << USB3_PHY_ISOLATION_MODE_PHY_GEN_TX_SHIFT));
+	mv_u3d_phy_write(base, USB3_PHY_ISOLATION_MODE, val);
+	udelay(100);
+
+	val = mv_u3d_phy_read(base, USB3_TXDETRX);
+	val &= ~(USB3_TXDETRX_VTHSEL_MASK);
+	val |= 0x1 << USB3_TXDETRX_VTHSEL_SHIFT;
+	mv_u3d_phy_write(base, USB3_TXDETRX, val);
+	udelay(100);
+
+	dev_dbg(mv_u3d_phy->dev, "start calibration\n");
+
+calstart:
+	/* Perform Manual Calibration */
+	mv_u3d_phy_set(base, USB3_KVCO_CALI_CONTROL,
+		1 << USB3_KVCO_CALI_CONTROL_CAL_START_SHIFT);
+
+	mdelay(1);
+
+	count = 0;
+	while (1) {
+		val = mv_u3d_phy_read(base, USB3_KVCO_CALI_CONTROL);
+		if (val & (1 << USB3_KVCO_CALI_CONTROL_CAL_DONE_SHIFT))
+			break;
+		else if (count > 50) {
+			dev_dbg(mv_u3d_phy->dev, "calibration failure, retry...\n");
+			goto calstart;
+		}
+		count++;
+		mdelay(1);
+	}
+
+	/* active PIPE interface */
+	mv_u3d_phy_write(base, USB3_PIPE_SM_CTRL,
+		1 << USB3_PIPE_SM_CTRL_PHY_INIT_DONE);
+
+	return 0;
+}
+
+static int __devinit mv_u3d_phy_probe(struct platform_device *pdev)
+{
+	struct mv_u3d_phy *mv_u3d_phy;
+	struct mv_usb_platform_data *pdata;
+	struct device *dev = &pdev->dev;
+	struct resource *res;
+	void __iomem	*phy_base;
+	int	ret;
+
+	pdata = pdev->dev.platform_data;
+	if (!pdata) {
+		dev_err(&pdev->dev, "%s: no platform data defined\n", __func__);
+		return -EINVAL;
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(dev, "missing mem resource\n");
+		return -ENODEV;
+	}
+
+	phy_base = devm_request_and_ioremap(dev, res);
+	if (!phy_base) {
+		dev_err(dev, "%s: register mapping failed\n", __func__);
+		return -ENXIO;
+	}
+
+	mv_u3d_phy = devm_kzalloc(dev, sizeof(*mv_u3d_phy), GFP_KERNEL);
+	if (!mv_u3d_phy)
+		return -ENOMEM;
+
+	mv_u3d_phy->dev			= &pdev->dev;
+	mv_u3d_phy->plat		= pdata;
+	mv_u3d_phy->base		= phy_base;
+	mv_u3d_phy->phy.dev		= mv_u3d_phy->dev;
+	mv_u3d_phy->phy.label		= "mv-u3d-phy";
+	mv_u3d_phy->phy.init		= mv_u3d_phy_init;
+	mv_u3d_phy->phy.shutdown	= mv_u3d_phy_shutdown;
+
+	ret = usb_add_phy(&mv_u3d_phy->phy, USB_PHY_TYPE_USB3);
+	if (ret)
+		goto err;
+
+	if (!mv_u3d_phy->clk)
+		mv_u3d_phy->clk = clk_get(mv_u3d_phy->dev, "u3dphy");
+
+	platform_set_drvdata(pdev, mv_u3d_phy);
+
+	dev_info(&pdev->dev, "Initialized Marvell USB 3.0 PHY\n");
+err:
+	return ret;
+}
+
+static int __exit mv_u3d_phy_remove(struct platform_device *pdev)
+{
+	struct mv_u3d_phy *mv_u3d_phy = platform_get_drvdata(pdev);
+
+	usb_remove_phy(&mv_u3d_phy->phy);
+
+	if (mv_u3d_phy->clk) {
+		clk_put(mv_u3d_phy->clk);
+		mv_u3d_phy->clk = NULL;
+	}
+
+	return 0;
+}
+
+static struct platform_driver mv_u3d_phy_driver = {
+	.probe		= mv_u3d_phy_probe,
+	.remove		= __devexit_p(mv_u3d_phy_remove),
+	.driver		= {
+		.name	= "mv-u3d-phy",
+		.owner	= THIS_MODULE,
+	},
+};
+
+module_platform_driver(mv_u3d_phy_driver);
+MODULE_DESCRIPTION("Marvell USB 3.0 PHY controller");
+MODULE_AUTHOR("Yu Xu <[e-mail]>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:mv-u3d-phy");

drivers/usb/phy/mv_u3d_phy.h

···
+/*
+ * Copyright (C) 2011 Marvell International Ltd. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#ifndef __MV_U3D_PHY_H
+#define __MV_U3D_PHY_H
+
+#define USB3_POWER_PLL_CONTROL		0x1
+#define USB3_KVCO_CALI_CONTROL		0x2
+#define USB3_IMPEDANCE_CALI_CTRL	0x3
+#define USB3_IMPEDANCE_TX_SSC		0x4
+#define USB3_SQUELCH_FFE		0x6
+#define USB3_GEN1_SET0			0xD
+#define USB3_GEN2_SET0			0xF
+#define USB3_GEN2_SET1			0x10
+#define USB3_DIGITAL_LOOPBACK_EN	0x23
+#define USB3_PHY_ISOLATION_MODE		0x26
+#define USB3_TXDETRX			0x48
+#define USB3_TX_EMPPH			0x5E
+#define USB3_RESET_CONTROL		0x90
+#define USB3_PIPE_SM_CTRL		0x91
+
+#define USB3_RESET_CONTROL_RESET_PIPE			0x1
+#define USB3_RESET_CONTROL_RESET_PHY			0x2
+
+#define USB3_POWER_PLL_CONTROL_REF_FREF_SEL_MASK	(0x1F << 0)
+#define USB3_POWER_PLL_CONTROL_REF_FREF_SEL_SHIFT	0
+#define USB3_PLL_25MHZ					0x2
+#define USB3_PLL_26MHZ					0x5
+#define USB3_POWER_PLL_CONTROL_PHY_MODE_MASK		(0x7 << 5)
+#define USB3_POWER_PLL_CONTROL_PHY_MODE_SHIFT		5
+#define USB3_POWER_PLL_CONTROL_PU_MASK			(0xF << 12)
+#define USB3_POWER_PLL_CONTROL_PU_SHIFT			12
+#define USB3_POWER_PLL_CONTROL_PU			(0xF << 12)
+
+#define USB3_KVCO_CALI_CONTROL_USE_MAX_PLL_RATE_MASK	(0x1 << 12)
+#define USB3_KVCO_CALI_CONTROL_USE_MAX_PLL_RATE_SHIFT	12
+#define USB3_KVCO_CALI_CONTROL_CAL_DONE_SHIFT		14
+#define USB3_KVCO_CALI_CONTROL_CAL_START_SHIFT		15
+
+#define USB3_SQUELCH_FFE_FFE_CAP_SEL_MASK		0xF
+#define USB3_SQUELCH_FFE_FFE_CAP_SEL_SHIFT		0
+#define USB3_SQUELCH_FFE_FFE_RES_SEL_MASK		(0x7 << 4)
+#define USB3_SQUELCH_FFE_FFE_RES_SEL_SHIFT		4
+#define USB3_SQUELCH_FFE_SQ_THRESH_IN_MASK		(0x1F << 8)
+#define USB3_SQUELCH_FFE_SQ_THRESH_IN_SHIFT		8
+
+#define USB3_GEN1_SET0_G1_TX_SLEW_CTRL_EN_MASK		(0x1 << 15)
+#define USB3_GEN1_SET0_G1_TX_EMPH_EN_SHIFT		11
+
+#define USB3_GEN2_SET0_G2_TX_AMP_MASK			(0x1F << 1)
+#define USB3_GEN2_SET0_G2_TX_AMP_SHIFT			1
+#define USB3_GEN2_SET0_G2_TX_AMP_ADJ_SHIFT		6
+#define USB3_GEN2_SET0_G2_TX_EMPH_AMP_MASK		(0xF << 7)
+#define USB3_GEN2_SET0_G2_TX_EMPH_AMP_SHIFT		7
+#define USB3_GEN2_SET0_G2_TX_EMPH_EN_MASK		(0x1 << 11)
+#define USB3_GEN2_SET0_G2_TX_EMPH_EN_SHIFT		11
+#define USB3_GEN2_SET0_G2_TX_SLEW_CTRL_EN_MASK		(0x1 << 15)
+#define USB3_GEN2_SET0_G2_TX_SLEW_CTRL_EN_SHIFT		15
+
+#define USB3_GEN2_SET1_G2_RX_SELMUPI_MASK		(0x7 << 0)
+#define USB3_GEN2_SET1_G2_RX_SELMUPI_SHIFT		0
+#define USB3_GEN2_SET1_G2_RX_SELMUPF_MASK		(0x7 << 3)
+#define USB3_GEN2_SET1_G2_RX_SELMUPF_SHIFT		3
+#define USB3_GEN2_SET1_G2_RX_SELMUFI_MASK		(0x3 << 6)
+#define USB3_GEN2_SET1_G2_RX_SELMUFI_SHIFT		6
+#define USB3_GEN2_SET1_G2_RX_SELMUFF_MASK		(0x3 << 8)
+#define USB3_GEN2_SET1_G2_RX_SELMUFF_SHIFT		8
+
+#define USB3_DIGITAL_LOOPBACK_EN_SEL_BITS_MASK		(0x3 << 10)
+#define USB3_DIGITAL_LOOPBACK_EN_SEL_BITS_SHIFT		10
+
+#define USB3_IMPEDANCE_CALI_CTRL_IMP_CAL_THR_MASK	(0x7 << 12)
+#define USB3_IMPEDANCE_CALI_CTRL_IMP_CAL_THR_SHIFT	12
+
+#define USB3_IMPEDANCE_TX_SSC_SSC_AMP_MASK		(0x3F << 0)
+#define USB3_IMPEDANCE_TX_SSC_SSC_AMP_SHIFT		0
+
+#define USB3_PHY_ISOLATION_MODE_PHY_GEN_RX_MASK		0xF
+#define USB3_PHY_ISOLATION_MODE_PHY_GEN_RX_SHIFT	0
+#define USB3_PHY_ISOLATION_MODE_PHY_GEN_TX_MASK		(0xF << 4)
+#define USB3_PHY_ISOLATION_MODE_PHY_GEN_TX_SHIFT	4
+#define USB3_PHY_ISOLATION_MODE_TX_DRV_IDLE_MASK	(0x1 << 8)
+
+#define USB3_TXDETRX_VTHSEL_MASK			(0x3 << 4)
+#define USB3_TXDETRX_VTHSEL_SHIFT			4
+
+#define USB3_TX_EMPPH_AMP_MASK				(0xF << 0)
+#define USB3_TX_EMPPH_AMP_SHIFT				0
+#define USB3_TX_EMPPH_EN_MASK				(0x1 << 6)
+#define USB3_TX_EMPPH_EN_SHIFT				6
+#define USB3_TX_EMPPH_AMP_FORCE_MASK			(0x1 << 7)
+#define USB3_TX_EMPPH_AMP_FORCE_SHIFT			7
+#define USB3_TX_EMPPH_PAR1_MASK				(0x1F << 8)
+#define USB3_TX_EMPPH_PAR1_SHIFT			8
+#define USB3_TX_EMPPH_PAR2_MASK				(0x1 << 13)
+#define USB3_TX_EMPPH_PAR2_SHIFT			13
+
+#define USB3_PIPE_SM_CTRL_PHY_INIT_DONE			15
+
+#endif /* __MV_U3D_PHY_H */

drivers/usb/phy/omap-usb2.c

···
+/*
+ * omap-usb2.c - USB PHY, talking to musb controller in OMAP.
+ *
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Author: Kishon Vijay Abraham I <[e-mail]>
+ *
+ * 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/slab.h>
+#include <linux/of.h>
+#include <linux/io.h>
+#include <linux/usb/omap_usb.h>
+#include <linux/usb/phy_companion.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/pm_runtime.h>
+#include <linux/delay.h>
+
+/**
+ * omap_usb2_set_comparator - links the comparator present in the sytem with
+ *	this phy
+ * @comparator - the companion phy(comparator) for this phy
+ *
+ * The phy companion driver should call this API passing the phy_companion
+ * filled with set_vbus and start_srp to be used by usb phy.
+ *
+ * For use by phy companion driver
+ */
+int omap_usb2_set_comparator(struct phy_companion *comparator)
+{
+	struct omap_usb	*phy;
+	struct usb_phy	*x = usb_get_phy(USB_PHY_TYPE_USB2);
+
+	if (IS_ERR(x))
+		return -ENODEV;
+
+	phy = phy_to_omapusb(x);
+	phy->comparator = comparator;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(omap_usb2_set_comparator);
+
+/**
+ * omap_usb_phy_power - power on/off the phy using control module reg
+ * @phy: struct omap_usb *
+ * @on: 0 or 1, based on powering on or off the PHY
+ *
+ * XXX: Remove this function once control module driver gets merged
+ */
+static void omap_usb_phy_power(struct omap_usb *phy, int on)
+{
+	u32 val;
+
+	if (on) {
+		val = readl(phy->control_dev);
+		if (val & PHY_PD) {
+			writel(~PHY_PD, phy->control_dev);
+			/* XXX: add proper documentation for this delay */
+			mdelay(200);
+		}
+	} else {
+		writel(PHY_PD, phy->control_dev);
+	}
+}
+
+static int omap_usb_set_vbus(struct usb_otg *otg, bool enabled)
+{
+	struct omap_usb *phy = phy_to_omapusb(otg->phy);
+
+	if (!phy->comparator)
+		return -ENODEV;
+
+	return phy->comparator->set_vbus(phy->comparator, enabled);
+}
+
+static int omap_usb_start_srp(struct usb_otg *otg)
+{
+	struct omap_usb *phy = phy_to_omapusb(otg->phy);
+
+	if (!phy->comparator)
+		return -ENODEV;
+
+	return phy->comparator->start_srp(phy->comparator);
+}
+
+static int omap_usb_set_host(struct usb_otg *otg, struct usb_bus *host)
+{
+	struct usb_phy	*phy = otg->phy;
+
+	otg->host = host;
+	if (!host)
+		phy->state = OTG_STATE_UNDEFINED;
+
+	return 0;
+}
+
+static int omap_usb_set_peripheral(struct usb_otg *otg,
+		struct usb_gadget *gadget)
+{
+	struct usb_phy	*phy = otg->phy;
+
+	otg->gadget = gadget;
+	if (!gadget)
+		phy->state = OTG_STATE_UNDEFINED;
+
+	return 0;
+}
+
+static int omap_usb2_suspend(struct usb_phy *x, int suspend)
+{
+	u32 ret;
+	struct omap_usb *phy = phy_to_omapusb(x);
+
+	if (suspend && !phy->is_suspended) {
+		omap_usb_phy_power(phy, 0);
+		pm_runtime_put_sync(phy->dev);
+		phy->is_suspended = 1;
+	} else if (!suspend && phy->is_suspended) {
+		ret = pm_runtime_get_sync(phy->dev);
+		if (ret < 0) {
+			dev_err(phy->dev, "get_sync failed with err %d\n",
+									ret);
+			return ret;
+		}
+		omap_usb_phy_power(phy, 1);
+		phy->is_suspended = 0;
+	}
+
+	return 0;
+}
+
+static int __devinit omap_usb2_probe(struct platform_device *pdev)
+{
+	struct omap_usb			*phy;
+	struct usb_otg			*otg;
+	struct resource			*res;
+
+	phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
+	if (!phy) {
+		dev_err(&pdev->dev, "unable to allocate memory for USB2 PHY\n");
+		return -ENOMEM;
+	}
+
+	otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL);
+	if (!otg) {
+		dev_err(&pdev->dev, "unable to allocate memory for USB OTG\n");
+		return -ENOMEM;
+	}
+
+	phy->dev		= &pdev->dev;
+
+	phy->phy.dev		= phy->dev;
+	phy->phy.label		= "omap-usb2";
+	phy->phy.set_suspend	= omap_usb2_suspend;
+	phy->phy.otg		= otg;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+
+	phy->control_dev = devm_request_and_ioremap(&pdev->dev, res);
+	if (phy->control_dev == NULL) {
+		dev_err(&pdev->dev, "Failed to obtain io memory\n");
+		return -ENXIO;
+	}
+
+	phy->is_suspended	= 1;
+	omap_usb_phy_power(phy, 0);
+
+	otg->set_host		= omap_usb_set_host;
+	otg->set_peripheral	= omap_usb_set_peripheral;
+	otg->set_vbus		= omap_usb_set_vbus;
+	otg->start_srp		= omap_usb_start_srp;
+	otg->phy		= &phy->phy;
+
+	phy->wkupclk = devm_clk_get(phy->dev, "usb_phy_cm_clk32k");
+	if (IS_ERR(phy->wkupclk)) {
+		dev_err(&pdev->dev, "unable to get usb_phy_cm_clk32k\n");
+		return PTR_ERR(phy->wkupclk);
+	}
+	clk_prepare(phy->wkupclk);
+
+	usb_add_phy(&phy->phy, USB_PHY_TYPE_USB2);
+
+	platform_set_drvdata(pdev, phy);
+
+	pm_runtime_enable(phy->dev);
+
+	return 0;
+}
+
+static int __devexit omap_usb2_remove(struct platform_device *pdev)
+{
+	struct omap_usb	*phy = platform_get_drvdata(pdev);
+
+	clk_unprepare(phy->wkupclk);
+	usb_remove_phy(&phy->phy);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_RUNTIME
+
+static int omap_usb2_runtime_suspend(struct device *dev)
+{
+	struct platform_device	*pdev = to_platform_device(dev);
+	struct omap_usb	*phy = platform_get_drvdata(pdev);
+
+	clk_disable(phy->wkupclk);
+
+	return 0;
+}
+
+static int omap_usb2_runtime_resume(struct device *dev)
+{
+	u32 ret = 0;
+	struct platform_device	*pdev = to_platform_device(dev);
+	struct omap_usb	*phy = platform_get_drvdata(pdev);
+
+	ret = clk_enable(phy->wkupclk);
+	if (ret < 0)
+		dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret);
+
+	return ret;
+}
+
+static const struct dev_pm_ops omap_usb2_pm_ops = {
+	SET_RUNTIME_PM_OPS(omap_usb2_runtime_suspend, omap_usb2_runtime_resume,
+		NULL)
+};
+
+#define DEV_PM_OPS     (&omap_usb2_pm_ops)
+#else
+#define DEV_PM_OPS     NULL
+#endif
+
+#ifdef CONFIG_OF
+static const struct of_device_id omap_usb2_id_table[] = {
+	{ .compatible = "ti,omap-usb2" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, omap_usb2_id_table);
+#endif
+
+static struct platform_driver omap_usb2_driver = {
+	.probe		= omap_usb2_probe,
+	.remove		= __devexit_p(omap_usb2_remove),
+	.driver		= {
+		.name	= "omap-usb2",
+		.owner	= THIS_MODULE,
+		.pm	= DEV_PM_OPS,
+		.of_match_table = of_match_ptr(omap_usb2_id_table),
+	},
+};
+
+module_platform_driver(omap_usb2_driver);
+
+MODULE_ALIAS("platform: omap_usb2");
+MODULE_AUTHOR("Texas Instruments Inc.");
+MODULE_DESCRIPTION("OMAP USB2 phy driver");
+MODULE_LICENSE("GPL v2");

include/linux/usb/nop-usb-xceiv.h

···
+#ifndef __LINUX_USB_NOP_XCEIV_H
+#define __LINUX_USB_NOP_XCEIV_H
+
+#include <linux/usb/otg.h>
+
+struct nop_usb_xceiv_platform_data {
+	enum usb_phy_type type;
+};
+
+#if defined(CONFIG_NOP_USB_XCEIV) || (defined(CONFIG_NOP_USB_XCEIV_MODULE) && defined(MODULE))
+/* sometimes transceivers are accessed only through e.g. ULPI */
+extern void usb_nop_xceiv_register(void);
+extern void usb_nop_xceiv_unregister(void);
+#else
+static inline void usb_nop_xceiv_register(void)
+{
+}
+
+static inline void usb_nop_xceiv_unregister(void)
+{
+}
+#endif
+
+#endif /* __LINUX_USB_NOP_XCEIV_H */

include/linux/usb/omap_usb.h

···
+/*
+ * omap_usb.h -- omap usb2 phy header file
+ *
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Author: Kishon Vijay Abraham I <[e-mail]>
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __DRIVERS_OMAP_USB2_H
+#define __DRIVERS_OMAP_USB2_H
+
+#include <linux/usb/otg.h>
+
+struct omap_usb {
+	struct usb_phy		phy;
+	struct phy_companion	*comparator;
+	struct device		*dev;
+	u32 __iomem		*control_dev;
+	struct clk		*wkupclk;
+	u8			is_suspended:1;
+};
+
+#define	PHY_PD	0x1
+
+#define	phy_to_omapusb(x)	container_of((x), struct omap_usb, phy)
+
+#if defined(CONFIG_OMAP_USB2) || defined(CONFIG_OMAP_USB2_MODULE)
+extern int omap_usb2_set_comparator(struct phy_companion *comparator);
+#else
+static inline int omap_usb2_set_comparator(struct phy_companion *comparator)
+{
+	return -ENODEV;
+}
+#endif
+
+#endif /* __DRIVERS_OMAP_USB_H */

include/linux/usb/otg.h

···
 #ifndef __LINUX_USB_OTG_H
 #define __LINUX_USB_OTG_H
 
-#include <linux/notifier.h>
-
-/* OTG defines lots of enumeration states before device reset */
-enum usb_otg_state {
-	OTG_STATE_UNDEFINED = 0,
-
-	/* single-role peripheral, and dual-role default-b */
-	OTG_STATE_B_IDLE,
-	OTG_STATE_B_SRP_INIT,
-	OTG_STATE_B_PERIPHERAL,
-
-	/* extra dual-role default-b states */
-	OTG_STATE_B_WAIT_ACON,
-	OTG_STATE_B_HOST,
-
-	/* dual-role default-a */
-	OTG_STATE_A_IDLE,
-	OTG_STATE_A_WAIT_VRISE,
-	OTG_STATE_A_WAIT_BCON,
-	OTG_STATE_A_HOST,
-	OTG_STATE_A_SUSPEND,
-	OTG_STATE_A_PERIPHERAL,
-	OTG_STATE_A_WAIT_VFALL,
-	OTG_STATE_A_VBUS_ERR,
-};
-
-enum usb_phy_events {
-	USB_EVENT_NONE,         /* no events or cable disconnected */
-	USB_EVENT_VBUS,         /* vbus valid event */
-	USB_EVENT_ID,           /* id was grounded */
-	USB_EVENT_CHARGER,      /* usb dedicated charger */
-	USB_EVENT_ENUMERATED,   /* gadget driver enumerated */
-};
-
-/* associate a type with PHY */
-enum usb_phy_type {
-	USB_PHY_TYPE_UNDEFINED,
-	USB_PHY_TYPE_USB2,
-	USB_PHY_TYPE_USB3,
-};
-
-struct usb_phy;
-
-/* for transceivers connected thru an ULPI interface, the user must
- * provide access ops
- */
-struct usb_phy_io_ops {
-	int (*read)(struct usb_phy *x, u32 reg);
-	int (*write)(struct usb_phy *x, u32 val, u32 reg);
-};
+#include <linux/usb/phy.h>
 
 struct usb_otg {
 	u8			default_a;
···
 
 };
 
-/*
- * the otg driver needs to interact with both device side and host side
- * usb controllers.  it decides which controller is active at a given
- * moment, using the transceiver, ID signal, HNP and sometimes static
- * configuration information (including "board isn't wired for otg").
- */
-struct usb_phy {
-	struct device		*dev;
-	const char		*label;
-	unsigned int		 flags;
-
-	enum usb_phy_type	type;
-	enum usb_otg_state	state;
-	enum usb_phy_events	last_event;
-
-	struct usb_otg		*otg;
-
-	struct device		*io_dev;
-	struct usb_phy_io_ops	*io_ops;
-	void __iomem		*io_priv;
-
-	/* for notification of usb_phy_events */
-	struct atomic_notifier_head	notifier;
-
-	/* to pass extra port status to the root hub */
-	u16			port_status;
-	u16			port_change;
-
-	/* to support controllers that have multiple transceivers */
-	struct list_head	head;
-
-	/* initialize/shutdown the OTG controller */
-	int	(*init)(struct usb_phy *x);
-	void	(*shutdown)(struct usb_phy *x);
-
-	/* effective for B devices, ignored for A-peripheral */
-	int	(*set_power)(struct usb_phy *x,
-				unsigned mA);
-
-	/* for non-OTG B devices: set transceiver into suspend mode */
-	int	(*set_suspend)(struct usb_phy *x,
-				int suspend);
-
-	/* notify phy connect status change */
-	int	(*notify_connect)(struct usb_phy *x, int port);
-	int	(*notify_disconnect)(struct usb_phy *x, int port);
-};
-
-
-/* for board-specific init logic */
-extern int usb_add_phy(struct usb_phy *, enum usb_phy_type type);
-extern void usb_remove_phy(struct usb_phy *);
-
-#if defined(CONFIG_NOP_USB_XCEIV) || (defined(CONFIG_NOP_USB_XCEIV_MODULE) && defined(MODULE))
-/* sometimes transceivers are accessed only through e.g. ULPI */
-extern void usb_nop_xceiv_register(void);
-extern void usb_nop_xceiv_unregister(void);
-#else
-static inline void usb_nop_xceiv_register(void)
-{
-}
-
-static inline void usb_nop_xceiv_unregister(void)
-{
-}
-#endif
-
-/* helpers for direct access thru low-level io interface */
-static inline int usb_phy_io_read(struct usb_phy *x, u32 reg)
-{
-	if (x->io_ops && x->io_ops->read)
-		return x->io_ops->read(x, reg);
-
-	return -EINVAL;
-}
-
-static inline int usb_phy_io_write(struct usb_phy *x, u32 val, u32 reg)
-{
-	if (x->io_ops && x->io_ops->write)
-		return x->io_ops->write(x, val, reg);
-
-	return -EINVAL;
-}
-
-static inline int
-usb_phy_init(struct usb_phy *x)
-{
-	if (x->init)
-		return x->init(x);
-
-	return 0;
-}
-
-static inline void
-usb_phy_shutdown(struct usb_phy *x)
-{
-	if (x->shutdown)
-		x->shutdown(x);
-}
-
-/* for usb host and peripheral controller drivers */
 #ifdef CONFIG_USB_OTG_UTILS
-extern struct usb_phy *usb_get_phy(enum usb_phy_type type);
-extern struct usb_phy *devm_usb_get_phy(struct device *dev,
-	enum usb_phy_type type);
-extern void usb_put_phy(struct usb_phy *);
-extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x);
 extern const char *otg_state_string(enum usb_otg_state state);
 #else
-static inline struct usb_phy *usb_get_phy(enum usb_phy_type type)
-{
-	return NULL;
-}
-
-static inline struct usb_phy *devm_usb_get_phy(struct device *dev,
-	enum usb_phy_type type)
-{
-	return NULL;
-}
-
-static inline void usb_put_phy(struct usb_phy *x)
-{
-}
-
-static inline void devm_usb_put_phy(struct device *dev, struct usb_phy *x)
-{
-}
-
 static inline const char *otg_state_string(enum usb_otg_state state)
 {
 	return NULL;
···
 }
 
 static inline int
-usb_phy_set_power(struct usb_phy *x, unsigned mA)
-{
-	if (x && x->set_power)
-		return x->set_power(x, mA);
-	return 0;
-}
-
-/* Context: can sleep */
-static inline int
-usb_phy_set_suspend(struct usb_phy *x, int suspend)
-{
-	if (x->set_suspend != NULL)
-		return x->set_suspend(x, suspend);
-	else
-		return 0;
-}
-
-static inline int
-usb_phy_notify_connect(struct usb_phy *x, int port)
-{
-	if (x->notify_connect)
-		return x->notify_connect(x, port);
-	else
-		return 0;
-}
-
-static inline int
-usb_phy_notify_disconnect(struct usb_phy *x, int port)
-{
-	if (x->notify_disconnect)
-		return x->notify_disconnect(x, port);
-	else
-		return 0;
-}
-
-static inline int
 otg_start_srp(struct usb_otg *otg)
 {
 	if (otg && otg->start_srp)
···
 	return -ENOTSUPP;
 }
 
-/* notifiers */
-static inline int
-usb_register_notifier(struct usb_phy *x, struct notifier_block *nb)
-{
-	return atomic_notifier_chain_register(&x->notifier, nb);
-}
-
-static inline void
-usb_unregister_notifier(struct usb_phy *x, struct notifier_block *nb)
-{
-	atomic_notifier_chain_unregister(&x->notifier, nb);
-}
-
 /* for OTG controller drivers (and maybe other stuff) */
 extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);
 
-static inline const char *usb_phy_type_string(enum usb_phy_type type)
-{
-	switch (type) {
-	case USB_PHY_TYPE_USB2:
-		return "USB2 PHY";
-	case USB_PHY_TYPE_USB3:
-		return "USB3 PHY";
-	default:
-		return "UNKNOWN PHY TYPE";
-	}
-}
 #endif /* __LINUX_USB_OTG_H */

include/linux/usb/phy.h

···
+/* USB OTG (On The Go) defines */
+/*
+ *
+ * These APIs may be used between USB controllers.  USB device drivers
+ * (for either host or peripheral roles) don't use these calls; they
+ * continue to use just usb_device and usb_gadget.
+ */
+
+#ifndef __LINUX_USB_PHY_H
+#define __LINUX_USB_PHY_H
+
+#include <linux/notifier.h>
+
+enum usb_phy_events {
+	USB_EVENT_NONE,         /* no events or cable disconnected */
+	USB_EVENT_VBUS,         /* vbus valid event */
+	USB_EVENT_ID,           /* id was grounded */
+	USB_EVENT_CHARGER,      /* usb dedicated charger */
+	USB_EVENT_ENUMERATED,   /* gadget driver enumerated */
+};
+
+/* associate a type with PHY */
+enum usb_phy_type {
+	USB_PHY_TYPE_UNDEFINED,
+	USB_PHY_TYPE_USB2,
+	USB_PHY_TYPE_USB3,
+};
+
+/* OTG defines lots of enumeration states before device reset */
+enum usb_otg_state {
+	OTG_STATE_UNDEFINED = 0,
+
+	/* single-role peripheral, and dual-role default-b */
+	OTG_STATE_B_IDLE,
+	OTG_STATE_B_SRP_INIT,
+	OTG_STATE_B_PERIPHERAL,
+
+	/* extra dual-role default-b states */
+	OTG_STATE_B_WAIT_ACON,
+	OTG_STATE_B_HOST,
+
+	/* dual-role default-a */
+	OTG_STATE_A_IDLE,
+	OTG_STATE_A_WAIT_VRISE,
+	OTG_STATE_A_WAIT_BCON,
+	OTG_STATE_A_HOST,
+	OTG_STATE_A_SUSPEND,
+	OTG_STATE_A_PERIPHERAL,
+	OTG_STATE_A_WAIT_VFALL,
+	OTG_STATE_A_VBUS_ERR,
+};
+
+struct usb_phy;
+struct usb_otg;
+
+/* for transceivers connected thru an ULPI interface, the user must
+ * provide access ops
+ */
+struct usb_phy_io_ops {
+	int (*read)(struct usb_phy *x, u32 reg);
+	int (*write)(struct usb_phy *x, u32 val, u32 reg);
+};
+
+struct usb_phy {
+	struct device		*dev;
+	const char		*label;
+	unsigned int		 flags;
+
+	enum usb_phy_type	type;
+	enum usb_otg_state	state;
+	enum usb_phy_events	last_event;
+
+	struct usb_otg		*otg;
+
+	struct device		*io_dev;
+	struct usb_phy_io_ops	*io_ops;
+	void __iomem		*io_priv;
+
+	/* for notification of usb_phy_events */
+	struct atomic_notifier_head	notifier;
+
+	/* to pass extra port status to the root hub */
+	u16			port_status;
+	u16			port_change;
+
+	/* to support controllers that have multiple transceivers */
+	struct list_head	head;
+
+	/* initialize/shutdown the OTG controller */
+	int	(*init)(struct usb_phy *x);
+	void	(*shutdown)(struct usb_phy *x);
+
+	/* effective for B devices, ignored for A-peripheral */
+	int	(*set_power)(struct usb_phy *x,
+				unsigned mA);
+
+	/* for non-OTG B devices: set transceiver into suspend mode */
+	int	(*set_suspend)(struct usb_phy *x,
+				int suspend);
+
+	/* notify phy connect status change */
+	int	(*notify_connect)(struct usb_phy *x, int port);
+	int	(*notify_disconnect)(struct usb_phy *x, int port);
+};
+
+
+/* for board-specific init logic */
+extern int usb_add_phy(struct usb_phy *, enum usb_phy_type type);
+extern void usb_remove_phy(struct usb_phy *);
+
+/* helpers for direct access thru low-level io interface */
+static inline int usb_phy_io_read(struct usb_phy *x, u32 reg)
+{
+	if (x->io_ops && x->io_ops->read)
+		return x->io_ops->read(x, reg);
+
+	return -EINVAL;
+}
+
+static inline int usb_phy_io_write(struct usb_phy *x, u32 val, u32 reg)
+{
+	if (x->io_ops && x->io_ops->write)
+		return x->io_ops->write(x, val, reg);
+
+	return -EINVAL;
+}
+
+static inline int
+usb_phy_init(struct usb_phy *x)
+{
+	if (x->init)
+		return x->init(x);
+
+	return 0;
+}
+
+static inline void
+usb_phy_shutdown(struct usb_phy *x)
+{
+	if (x->shutdown)
+		x->shutdown(x);
+}
+
+/* for usb host and peripheral controller drivers */
+#ifdef CONFIG_USB_OTG_UTILS
+extern struct usb_phy *usb_get_phy(enum usb_phy_type type);
+extern struct usb_phy *devm_usb_get_phy(struct device *dev,
+	enum usb_phy_type type);
+extern void usb_put_phy(struct usb_phy *);
+extern void devm_usb_put_phy(struct device *dev, struct usb_phy *x);
+#else
+static inline struct usb_phy *usb_get_phy(enum usb_phy_type type)
+{
+	return NULL;
+}
+
+static inline struct usb_phy *devm_usb_get_phy(struct device *dev,
+	enum usb_phy_type type)
+{
+	return NULL;
+}
+
+static inline void usb_put_phy(struct usb_phy *x)
+{
+}
+
+static inline void devm_usb_put_phy(struct device *dev, struct usb_phy *x)
+{
+}
+
+#endif
+
+static inline int
+usb_phy_set_power(struct usb_phy *x, unsigned mA)
+{
+	if (x && x->set_power)
+		return x->set_power(x, mA);
+	return 0;
+}
+
+/* Context: can sleep */
+static inline int
+usb_phy_set_suspend(struct usb_phy *x, int suspend)
+{
+	if (x->set_suspend != NULL)
+		return x->set_suspend(x, suspend);
+	else
+		return 0;
+}
+
+static inline int
+usb_phy_notify_connect(struct usb_phy *x, int port)
+{
+	if (x->notify_connect)
+		return x->notify_connect(x, port);
+	else
+		return 0;
+}
+
+static inline int
+usb_phy_notify_disconnect(struct usb_phy *x, int port)
+{
+	if (x->notify_disconnect)
+		return x->notify_disconnect(x, port);
+	else
+		return 0;
+}
+
+/* notifiers */
+static inline int
+usb_register_notifier(struct usb_phy *x, struct notifier_block *nb)
+{
+	return atomic_notifier_chain_register(&x->notifier, nb);
+}
+
+static inline void
+usb_unregister_notifier(struct usb_phy *x, struct notifier_block *nb)
+{
+	atomic_notifier_chain_unregister(&x->notifier, nb);
+}
+
+static inline const char *usb_phy_type_string(enum usb_phy_type type)
+{
+	switch (type) {
+	case USB_PHY_TYPE_USB2:
+		return "USB2 PHY";
+	case USB_PHY_TYPE_USB3:
+		return "USB3 PHY";
+	default:
+		return "UNKNOWN PHY TYPE";
+	}
+}
+#endif /* __LINUX_USB_PHY_H */

include/linux/usb/phy_companion.h

···
+/*
+ * phy-companion.h -- phy companion to indicate the comparator part of PHY
+ *
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Author: Kishon Vijay Abraham I <[e-mail]>
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __DRIVERS_PHY_COMPANION_H
+#define __DRIVERS_PHY_COMPANION_H
+
+#include <linux/usb/otg.h>
+
+/* phy_companion to take care of VBUS, ID and srp capabilities */
+struct phy_companion {
+
+	/* effective for A-peripheral, ignored for B devices */
+	int	(*set_vbus)(struct phy_companion *x, bool enabled);
+
+	/* for B devices only:  start session with A-Host */
+	int	(*start_srp)(struct phy_companion *x);
+};
+
+#endif /* __DRIVERS_PHY_COMPANION_H */