Merge 3.3-rc7 into usb-next

This resolves the conflict with drivers/usb/host/ehci-fsl.h that
happened with changes in Linus's and this branch at the same time.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/ABI/testing/sysfs-bus-usb

@@ -182,3 +182,14 @@ Description:
 		USB2 hardware LPM is enabled for the device. Developer can
 		write y/Y/1 or n/N/0 to the file to enable/disable the
 		feature.
+
+What:		/sys/bus/usb/devices/.../removable
+Date:		February 2012
+Contact:	Matthew Garrett <mjg@redhat.com>
+Description:
+		Some information about whether a given USB device is
+		physically fixed to the platform can be inferred from a
+		combination of hub decriptor bits and platform-specific data
+		such as ACPI. This file will read either "removable" or
+		"fixed" if the information is available, and "unknown"
+		otherwise.

arch/arm/mach-imx/mx31moboard-devboard.c

@@ -158,7 +158,7 @@ static int devboard_usbh1_hw_init(struct platform_device *pdev)
 #define USBH1_VBUSEN_B	IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
 #define USBH1_MODE	IOMUX_TO_GPIO(MX31_PIN_NFALE)
 
-static int devboard_isp1105_init(struct otg_transceiver *otg)
+static int devboard_isp1105_init(struct usb_phy *otg)
 {
 	int ret = gpio_request(USBH1_MODE, "usbh1-mode");
 	if (ret)
@@ -177,7 +177,7 @@ static int devboard_isp1105_init(struct otg_transceiver *otg)
 }
 
 
-static int devboard_isp1105_set_vbus(struct otg_transceiver *otg, bool on)
+static int devboard_isp1105_set_vbus(struct usb_otg *otg, bool on)
 {
 	if (on)
 		gpio_set_value(USBH1_VBUSEN_B, 0);
@@ -194,18 +194,24 @@ static struct mxc_usbh_platform_data usbh1_pdata __initdata = {
 
 static int __init devboard_usbh1_init(void)
 {
-	struct otg_transceiver *otg;
+	struct usb_phy *phy;
 	struct platform_device *pdev;
 
-	otg = kzalloc(sizeof(*otg), GFP_KERNEL);
-	if (!otg)
+	phy = kzalloc(sizeof(*phy), GFP_KERNEL);
+	if (!phy)
 		return -ENOMEM;
 
-	otg->label	= "ISP1105";
-	otg->init	= devboard_isp1105_init;
-	otg->set_vbus	= devboard_isp1105_set_vbus;
+	phy->otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);
+	if (!phy->otg) {
+		kfree(phy);
+		return -ENOMEM;
+	}
+
+	phy->label	= "ISP1105";
+	phy->init	= devboard_isp1105_init;
+	phy->otg->set_vbus	= devboard_isp1105_set_vbus;
 
-	usbh1_pdata.otg = otg;
+	usbh1_pdata.otg = phy;
 
 	pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
 	if (IS_ERR(pdev))

arch/arm/mach-imx/mx31moboard-marxbot.c

@@ -272,7 +272,7 @@ static int marxbot_usbh1_hw_init(struct platform_device *pdev)
 #define USBH1_VBUSEN_B	IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
 #define USBH1_MODE	IOMUX_TO_GPIO(MX31_PIN_NFALE)
 
-static int marxbot_isp1105_init(struct otg_transceiver *otg)
+static int marxbot_isp1105_init(struct usb_phy *otg)
 {
 	int ret = gpio_request(USBH1_MODE, "usbh1-mode");
 	if (ret)
@@ -291,7 +291,7 @@ static int marxbot_isp1105_init(struct otg_transceiver *otg)
 }
 
 
-static int marxbot_isp1105_set_vbus(struct otg_transceiver *otg, bool on)
+static int marxbot_isp1105_set_vbus(struct usb_otg *otg, bool on)
 {
 	if (on)
 		gpio_set_value(USBH1_VBUSEN_B, 0);
@@ -308,18 +308,24 @@ static struct mxc_usbh_platform_data usbh1_pdata __initdata = {
 
 static int __init marxbot_usbh1_init(void)
 {
-	struct otg_transceiver *otg;
+	struct usb_phy *phy;
 	struct platform_device *pdev;
 
-	otg = kzalloc(sizeof(*otg), GFP_KERNEL);
-	if (!otg)
+	phy = kzalloc(sizeof(*phy), GFP_KERNEL);
+	if (!phy)
 		return -ENOMEM;
 
-	otg->label	= "ISP1105";
-	otg->init	= marxbot_isp1105_init;
-	otg->set_vbus	= marxbot_isp1105_set_vbus;
+	phy->otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);
+	if (!phy->otg) {
+		kfree(phy);
+		return -ENOMEM;
+	}
+
+	phy->label	= "ISP1105";
+	phy->init	= marxbot_isp1105_init;
+	phy->otg->set_vbus	= marxbot_isp1105_set_vbus;
 
-	usbh1_pdata.otg = otg;
+	usbh1_pdata.otg = phy;
 
 	pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
 	if (IS_ERR(pdev))

arch/arm/mach-pxa/pxa3xx-ulpi.c

@@ -33,7 +33,7 @@ struct pxa3xx_u2d_ulpi {
 	struct clk		*clk;
 	void __iomem		*mmio_base;
 
-	struct otg_transceiver	*otg;
+	struct usb_phy		*otg;
 	unsigned int		ulpi_mode;
 };
 
@@ -79,7 +79,7 @@ static int pxa310_ulpi_poll(void)
 	return -ETIMEDOUT;
 }
 
-static int pxa310_ulpi_read(struct otg_transceiver *otg, u32 reg)
+static int pxa310_ulpi_read(struct usb_phy *otg, u32 reg)
 {
 	int err;
 
@@ -98,7 +98,7 @@ static int pxa310_ulpi_read(struct otg_transceiver *otg, u32 reg)
 	return u2d_readl(U2DOTGUCR) & U2DOTGUCR_RDATA;
 }
 
-static int pxa310_ulpi_write(struct otg_transceiver *otg, u32 val, u32 reg)
+static int pxa310_ulpi_write(struct usb_phy *otg, u32 val, u32 reg)
 {
 	if (pxa310_ulpi_get_phymode() != SYNCH) {
 		pr_warning("%s: PHY is not in SYNCH mode!\n", __func__);
@@ -111,7 +111,7 @@ static int pxa310_ulpi_write(struct otg_transceiver *otg, u32 val, u32 reg)
 	return pxa310_ulpi_poll();
 }
 
-struct otg_io_access_ops pxa310_ulpi_access_ops = {
+struct usb_phy_io_ops pxa310_ulpi_access_ops = {
 	.read	= pxa310_ulpi_read,
 	.write	= pxa310_ulpi_write,
 };
@@ -139,19 +139,19 @@ static int pxa310_start_otg_host_transcvr(struct usb_bus *host)
 
 	pxa310_otg_transceiver_rtsm();
 
-	err = otg_init(u2d->otg);
+	err = usb_phy_init(u2d->otg);
 	if (err) {
 		pr_err("OTG transceiver init failed");
 		return err;
 	}
 
-	err = otg_set_vbus(u2d->otg, 1);
+	err = otg_set_vbus(u2d->otg->otg, 1);
 	if (err) {
 		pr_err("OTG transceiver VBUS set failed");
 		return err;
 	}
 
-	err = otg_set_host(u2d->otg, host);
+	err = otg_set_host(u2d->otg->otg, host);
 	if (err)
 		pr_err("OTG transceiver Host mode set failed");
 
@@ -189,9 +189,9 @@ static void pxa310_stop_otg_hc(void)
 {
 	pxa310_otg_transceiver_rtsm();
 
-	otg_set_host(u2d->otg, NULL);
-	otg_set_vbus(u2d->otg, 0);
-	otg_shutdown(u2d->otg);
+	otg_set_host(u2d->otg->otg, NULL);
+	otg_set_vbus(u2d->otg->otg, 0);
+	usb_phy_shutdown(u2d->otg);
 }
 
 static void pxa310_u2d_setup_otg_hc(void)

arch/arm/mach-tegra/include/mach/usb_phy.h

@@ -58,7 +58,7 @@ struct tegra_usb_phy {
 	struct clk *pad_clk;
 	enum tegra_usb_phy_mode mode;
 	void *config;
-	struct otg_transceiver *ulpi;
+	struct usb_phy *ulpi;
 };
 
 struct tegra_usb_phy *tegra_usb_phy_open(int instance, void __iomem *regs,

arch/arm/mach-tegra/usb_phy.c

@@ -608,13 +608,13 @@ static int ulpi_phy_power_on(struct tegra_usb_phy *phy)
 	writel(val, base + ULPI_TIMING_CTRL_1);
 
 	/* Fix VbusInvalid due to floating VBUS */
-	ret = otg_io_write(phy->ulpi, 0x40, 0x08);
+	ret = usb_phy_io_write(phy->ulpi, 0x40, 0x08);
 	if (ret) {
 		pr_err("%s: ulpi write failed\n", __func__);
 		return ret;
 	}
 
-	ret = otg_io_write(phy->ulpi, 0x80, 0x0B);
+	ret = usb_phy_io_write(phy->ulpi, 0x80, 0x0B);
 	if (ret) {
 		pr_err("%s: ulpi write failed\n", __func__);
 		return ret;

arch/arm/plat-mxc/include/mach/mxc_ehci.h

@@ -44,7 +44,7 @@ struct mxc_usbh_platform_data {
 	int (*exit)(struct platform_device *pdev);
 
 	unsigned int		 portsc;
-	struct otg_transceiver	*otg;
+	struct usb_phy		*otg;
 };
 
 int mx51_initialize_usb_hw(int port, unsigned int flags);

arch/arm/plat-mxc/include/mach/ulpi.h

@@ -2,15 +2,15 @@
 #define __MACH_ULPI_H
 
 #ifdef CONFIG_USB_ULPI
-struct otg_transceiver *imx_otg_ulpi_create(unsigned int flags);
+struct usb_phy *imx_otg_ulpi_create(unsigned int flags);
 #else
-static inline struct otg_transceiver *imx_otg_ulpi_create(unsigned int flags)
+static inline struct usb_phy *imx_otg_ulpi_create(unsigned int flags)
 {
 	return NULL;
 }
 #endif
 
-extern struct otg_io_access_ops mxc_ulpi_access_ops;
+extern struct usb_phy_io_ops mxc_ulpi_access_ops;
 
 #endif /* __MACH_ULPI_H */
 

arch/arm/plat-mxc/ulpi.c

@@ -58,7 +58,7 @@ static int ulpi_poll(void __iomem *view, u32 bit)
 	return -ETIMEDOUT;
 }
 
-static int ulpi_read(struct otg_transceiver *otg, u32 reg)
+static int ulpi_read(struct usb_phy *otg, u32 reg)
 {
 	int ret;
 	void __iomem *view = otg->io_priv;
@@ -84,7 +84,7 @@ static int ulpi_read(struct otg_transceiver *otg, u32 reg)
 	return (__raw_readl(view) >> ULPIVW_RDATA_SHIFT) & ULPIVW_RDATA_MASK;
 }
 
-static int ulpi_write(struct otg_transceiver *otg, u32 val, u32 reg)
+static int ulpi_write(struct usb_phy *otg, u32 val, u32 reg)
 {
 	int ret;
 	void __iomem *view = otg->io_priv;
@@ -106,13 +106,13 @@ static int ulpi_write(struct otg_transceiver *otg, u32 val, u32 reg)
 	return ulpi_poll(view, ULPIVW_RUN);
 }
 
-struct otg_io_access_ops mxc_ulpi_access_ops = {
+struct usb_phy_io_ops mxc_ulpi_access_ops = {
 	.read	= ulpi_read,
 	.write	= ulpi_write,
 };
 EXPORT_SYMBOL_GPL(mxc_ulpi_access_ops);
 
-struct otg_transceiver *imx_otg_ulpi_create(unsigned int flags)
+struct usb_phy *imx_otg_ulpi_create(unsigned int flags)
 {
 	return otg_ulpi_create(&mxc_ulpi_access_ops, flags);
 }

drivers/block/ub.c

@@ -117,43 +117,6 @@
 
 #define UB_SENSE_SIZE  18
 
-/*
- */
-
-/* command block wrapper */
-struct bulk_cb_wrap {
-	__le32	Signature;		/* contains 'USBC' */
-	u32	Tag;			/* unique per command id */
-	__le32	DataTransferLength;	/* size of data */
-	u8	Flags;			/* direction in bit 0 */
-	u8	Lun;			/* LUN */
-	u8	Length;			/* of of the CDB */
-	u8	CDB[UB_MAX_CDB_SIZE];	/* max command */
-};
-
-#define US_BULK_CB_WRAP_LEN	31
-#define US_BULK_CB_SIGN		0x43425355	/*spells out USBC */
-#define US_BULK_FLAG_IN		1
-#define US_BULK_FLAG_OUT	0
-
-/* command status wrapper */
-struct bulk_cs_wrap {
-	__le32	Signature;		/* should = 'USBS' */
-	u32	Tag;			/* same as original command */
-	__le32	Residue;		/* amount not transferred */
-	u8	Status;			/* see below */
-};
-
-#define US_BULK_CS_WRAP_LEN	13
-#define US_BULK_CS_SIGN		0x53425355	/* spells out 'USBS' */
-#define US_BULK_STAT_OK		0
-#define US_BULK_STAT_FAIL	1
-#define US_BULK_STAT_PHASE	2
-
-/* bulk-only class specific requests */
-#define US_BULK_RESET_REQUEST	0xff
-#define US_BULK_GET_MAX_LUN	0xfe
-
 /*
  */
 struct ub_dev;

drivers/net/usb/Kconfig

@@ -398,6 +398,27 @@ config USB_NET_KALMIA
 	  To compile this driver as a module, choose M here: the
 	  module will be called kalmia.
 
+config USB_NET_QMI_WWAN
+	tristate "QMI WWAN driver for Qualcomm MSM based 3G and LTE modems"
+	depends on USB_USBNET
+	help
+	  Support WWAN LTE/3G devices based on Qualcomm Mobile Data Modem
+	  (MDM) chipsets.  Examples of such devices are
+	    * Huawei E392/E398
+
+	  This driver will only drive the ethernet part of the chips.
+	  The devices require additional configuration to be usable.
+	  Multiple management interfaces with linux drivers are
+	  available:
+
+	    * option: AT commands on /dev/ttyUSBx
+	    * cdc-wdm: Qualcomm MSM Interface (QMI) protocol on /dev/cdc-wdmx
+
+	  A modem manager with support for QMI is recommended.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called qmi_wwan.
+
 config USB_HSO
 	tristate "Option USB High Speed Mobile Devices"
 	depends on USB && RFKILL
@@ -461,4 +482,5 @@ config USB_VL600
 
 	  http://ubuntuforums.org/showpost.php?p=10589647&postcount=17
 
+
 endmenu

drivers/net/usb/Makefile

@@ -29,4 +29,5 @@ obj-$(CONFIG_USB_SIERRA_NET)	+= sierra_net.o
 obj-$(CONFIG_USB_NET_CX82310_ETH)	+= cx82310_eth.o
 obj-$(CONFIG_USB_NET_CDC_NCM)	+= cdc_ncm.o
 obj-$(CONFIG_USB_VL600)		+= lg-vl600.o
+obj-$(CONFIG_USB_NET_QMI_WWAN)	+= qmi_wwan.o
 

drivers/net/usb/qmi_wwan.c

@@ -0,0 +1,444 @@
+/*
+ * Copyright (c) 2012  Bjørn Mork <bjorn@mork.no>
+ *
+ * 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/module.h>
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/usb.h>
+#include <linux/usb/cdc.h>
+#include <linux/usb/usbnet.h>
+#include <linux/usb/cdc-wdm.h>
+
+/* The name of the CDC Device Management driver */
+#define DM_DRIVER "cdc_wdm"
+
+/*
+ * This driver supports wwan (3G/LTE/?) devices using a vendor
+ * specific management protocol called Qualcomm MSM Interface (QMI) -
+ * in addition to the more common AT commands over serial interface
+ * management
+ *
+ * QMI is wrapped in CDC, using CDC encapsulated commands on the
+ * control ("master") interface of a two-interface CDC Union
+ * resembling standard CDC ECM.  The devices do not use the control
+ * interface for any other CDC messages.  Most likely because the
+ * management protocol is used in place of the standard CDC
+ * notifications NOTIFY_NETWORK_CONNECTION and NOTIFY_SPEED_CHANGE
+ *
+ * Handling a protocol like QMI is out of the scope for any driver.
+ * It can be exported as a character device using the cdc-wdm driver,
+ * which will enable userspace applications ("modem managers") to
+ * handle it.  This may be required to use the network interface
+ * provided by the driver.
+ *
+ * These devices may alternatively/additionally be configured using AT
+ * commands on any of the serial interfaces driven by the option driver
+ *
+ * This driver binds only to the data ("slave") interface to enable
+ * the cdc-wdm driver to bind to the control interface.  It still
+ * parses the CDC functional descriptors on the control interface to
+ *  a) verify that this is indeed a handled interface (CDC Union
+ *     header lists it as slave)
+ *  b) get MAC address and other ethernet config from the CDC Ethernet
+ *     header
+ *  c) enable user bind requests against the control interface, which
+ *     is the common way to bind to CDC Ethernet Control Model type
+ *     interfaces
+ *  d) provide a hint to the user about which interface is the
+ *     corresponding management interface
+ */
+
+static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+	int status = -1;
+	struct usb_interface *control = NULL;
+	u8 *buf = intf->cur_altsetting->extra;
+	int len = intf->cur_altsetting->extralen;
+	struct usb_interface_descriptor *desc = &intf->cur_altsetting->desc;
+	struct usb_cdc_union_desc *cdc_union = NULL;
+	struct usb_cdc_ether_desc *cdc_ether = NULL;
+	u32 required = 1 << USB_CDC_HEADER_TYPE | 1 << USB_CDC_UNION_TYPE;
+	u32 found = 0;
+	atomic_t *pmcount = (void *)&dev->data[1];
+
+	atomic_set(pmcount, 0);
+
+	/*
+	 * assume a data interface has no additional descriptors and
+	 * that the control and data interface are numbered
+	 * consecutively - this holds for the Huawei device at least
+	 */
+	if (len == 0 && desc->bInterfaceNumber > 0) {
+		control = usb_ifnum_to_if(dev->udev, desc->bInterfaceNumber - 1);
+		if (!control)
+			goto err;
+
+		buf = control->cur_altsetting->extra;
+		len = control->cur_altsetting->extralen;
+		dev_dbg(&intf->dev, "guessing \"control\" => %s, \"data\" => this\n",
+			dev_name(&control->dev));
+	}
+
+	while (len > 3) {
+		struct usb_descriptor_header *h = (void *)buf;
+
+		/* ignore any misplaced descriptors */
+		if (h->bDescriptorType != USB_DT_CS_INTERFACE)
+			goto next_desc;
+
+		/* buf[2] is CDC descriptor subtype */
+		switch (buf[2]) {
+		case USB_CDC_HEADER_TYPE:
+			if (found & 1 << USB_CDC_HEADER_TYPE) {
+				dev_dbg(&intf->dev, "extra CDC header\n");
+				goto err;
+			}
+			if (h->bLength != sizeof(struct usb_cdc_header_desc)) {
+				dev_dbg(&intf->dev, "CDC header len %u\n", h->bLength);
+				goto err;
+			}
+			break;
+		case USB_CDC_UNION_TYPE:
+			if (found & 1 << USB_CDC_UNION_TYPE) {
+				dev_dbg(&intf->dev, "extra CDC union\n");
+				goto err;
+			}
+			if (h->bLength != sizeof(struct usb_cdc_union_desc)) {
+				dev_dbg(&intf->dev, "CDC union len %u\n", h->bLength);
+				goto err;
+			}
+			cdc_union = (struct usb_cdc_union_desc *)buf;
+			break;
+		case USB_CDC_ETHERNET_TYPE:
+			if (found & 1 << USB_CDC_ETHERNET_TYPE) {
+				dev_dbg(&intf->dev, "extra CDC ether\n");
+				goto err;
+			}
+			if (h->bLength != sizeof(struct usb_cdc_ether_desc)) {
+				dev_dbg(&intf->dev, "CDC ether len %u\n",  h->bLength);
+				goto err;
+			}
+			cdc_ether = (struct usb_cdc_ether_desc *)buf;
+			break;
+		}
+
+		/*
+		 * Remember which CDC functional descriptors we've seen.  Works
+		 * for all types we care about, of which USB_CDC_ETHERNET_TYPE
+		 * (0x0f) is the highest numbered
+		 */
+		if (buf[2] < 32)
+			found |= 1 << buf[2];
+
+next_desc:
+		len -= h->bLength;
+		buf += h->bLength;
+	}
+
+	/* did we find all the required ones? */
+	if ((found & required) != required) {
+		dev_err(&intf->dev, "CDC functional descriptors missing\n");
+		goto err;
+	}
+
+	/* give the user a helpful hint if trying to bind to the wrong interface */
+	if (cdc_union && desc->bInterfaceNumber == cdc_union->bMasterInterface0) {
+		dev_err(&intf->dev, "leaving \"control\" interface for " DM_DRIVER " - try binding to %s instead!\n",
+			dev_name(&usb_ifnum_to_if(dev->udev, cdc_union->bSlaveInterface0)->dev));
+		goto err;
+	}
+
+	/* errors aren't fatal - we can live with the dynamic address */
+	if (cdc_ether) {
+		dev->hard_mtu = le16_to_cpu(cdc_ether->wMaxSegmentSize);
+		usbnet_get_ethernet_addr(dev, cdc_ether->iMACAddress);
+	}
+
+	/* success! point the user to the management interface */
+	if (control)
+		dev_info(&intf->dev, "Use \"" DM_DRIVER "\" for QMI interface %s\n",
+			dev_name(&control->dev));
+
+	/* XXX: add a sysfs symlink somewhere to help management applications find it? */
+
+	/* collect bulk endpoints now that we know intf == "data" interface */
+	status = usbnet_get_endpoints(dev, intf);
+
+err:
+	return status;
+}
+
+/* using a counter to merge subdriver requests with our own into a combined state */
+static int qmi_wwan_manage_power(struct usbnet *dev, int on)
+{
+	atomic_t *pmcount = (void *)&dev->data[1];
+	int rv = 0;
+
+	dev_dbg(&dev->intf->dev, "%s() pmcount=%d, on=%d\n", __func__, atomic_read(pmcount), on);
+
+	if ((on && atomic_add_return(1, pmcount) == 1) || (!on && atomic_dec_and_test(pmcount))) {
+		/* need autopm_get/put here to ensure the usbcore sees the new value */
+		rv = usb_autopm_get_interface(dev->intf);
+		if (rv < 0)
+			goto err;
+		dev->intf->needs_remote_wakeup = on;
+		usb_autopm_put_interface(dev->intf);
+	}
+err:
+	return rv;
+}
+
+static int qmi_wwan_cdc_wdm_manage_power(struct usb_interface *intf, int on)
+{
+	struct usbnet *dev = usb_get_intfdata(intf);
+	return qmi_wwan_manage_power(dev, on);
+}
+
+/* Some devices combine the "control" and "data" functions into a
+ * single interface with all three endpoints: interrupt + bulk in and
+ * out
+ *
+ * Setting up cdc-wdm as a subdriver owning the interrupt endpoint
+ * will let it provide userspace access to the encapsulated QMI
+ * protocol without interfering with the usbnet operations.
+  */
+static int qmi_wwan_bind_shared(struct usbnet *dev, struct usb_interface *intf)
+{
+	int rv;
+	struct usb_driver *subdriver = NULL;
+	atomic_t *pmcount = (void *)&dev->data[1];
+
+	atomic_set(pmcount, 0);
+
+	/* collect all three endpoints */
+	rv = usbnet_get_endpoints(dev, intf);
+	if (rv < 0)
+		goto err;
+
+	/* require interrupt endpoint for subdriver */
+	if (!dev->status) {
+		rv = -EINVAL;
+		goto err;
+	}
+
+	subdriver = usb_cdc_wdm_register(intf, &dev->status->desc, 512, &qmi_wwan_cdc_wdm_manage_power);
+	if (IS_ERR(subdriver)) {
+		rv = PTR_ERR(subdriver);
+		goto err;
+	}
+
+	/* can't let usbnet use the interrupt endpoint */
+	dev->status = NULL;
+
+	/* save subdriver struct for suspend/resume wrappers */
+	dev->data[0] = (unsigned long)subdriver;
+
+err:
+	return rv;
+}
+
+/* Gobi devices uses identical class/protocol codes for all interfaces regardless
+ * of function. Some of these are CDC ACM like and have the exact same endpoints
+ * we are looking for. This leaves two possible strategies for identifying the
+ * correct interface:
+ *   a) hardcoding interface number, or
+ *   b) use the fact that the wwan interface is the only one lacking additional
+ *      (CDC functional) descriptors
+ *
+ * Let's see if we can get away with the generic b) solution.
+ */
+static int qmi_wwan_bind_gobi(struct usbnet *dev, struct usb_interface *intf)
+{
+	int rv = -EINVAL;
+
+	/* ignore any interface with additional descriptors */
+	if (intf->cur_altsetting->extralen)
+		goto err;
+
+	rv = qmi_wwan_bind_shared(dev, intf);
+err:
+	return rv;
+}
+
+static void qmi_wwan_unbind_shared(struct usbnet *dev, struct usb_interface *intf)
+{
+	struct usb_driver *subdriver = (void *)dev->data[0];
+
+	if (subdriver && subdriver->disconnect)
+		subdriver->disconnect(intf);
+
+	dev->data[0] = (unsigned long)NULL;
+}
+
+/* suspend/resume wrappers calling both usbnet and the cdc-wdm
+ * subdriver if present.
+ *
+ * NOTE: cdc-wdm also supports pre/post_reset, but we cannot provide
+ * wrappers for those without adding usbnet reset support first.
+ */
+static int qmi_wwan_suspend(struct usb_interface *intf, pm_message_t message)
+{
+	struct usbnet *dev = usb_get_intfdata(intf);
+	struct usb_driver *subdriver = (void *)dev->data[0];
+	int ret;
+
+	ret = usbnet_suspend(intf, message);
+	if (ret < 0)
+		goto err;
+
+	if (subdriver && subdriver->suspend)
+		ret = subdriver->suspend(intf, message);
+	if (ret < 0)
+		usbnet_resume(intf);
+err:
+	return ret;
+}
+
+static int qmi_wwan_resume(struct usb_interface *intf)
+{
+	struct usbnet *dev = usb_get_intfdata(intf);
+	struct usb_driver *subdriver = (void *)dev->data[0];
+	int ret = 0;
+
+	if (subdriver && subdriver->resume)
+		ret = subdriver->resume(intf);
+	if (ret < 0)
+		goto err;
+	ret = usbnet_resume(intf);
+	if (ret < 0 && subdriver && subdriver->resume && subdriver->suspend)
+		subdriver->suspend(intf, PMSG_SUSPEND);
+err:
+	return ret;
+}
+
+
+static const struct driver_info	qmi_wwan_info = {
+	.description	= "QMI speaking wwan device",
+	.flags		= FLAG_WWAN,
+	.bind		= qmi_wwan_bind,
+	.manage_power	= qmi_wwan_manage_power,
+};
+
+static const struct driver_info	qmi_wwan_shared = {
+	.description	= "QMI speaking wwan device with combined interface",
+	.flags		= FLAG_WWAN,
+	.bind		= qmi_wwan_bind_shared,
+	.unbind		= qmi_wwan_unbind_shared,
+	.manage_power	= qmi_wwan_manage_power,
+};
+
+static const struct driver_info	qmi_wwan_gobi = {
+	.description	= "Qualcomm Gobi wwan/QMI device",
+	.flags		= FLAG_WWAN,
+	.bind		= qmi_wwan_bind_gobi,
+	.unbind		= qmi_wwan_unbind_shared,
+	.manage_power	= qmi_wwan_manage_power,
+};
+
+#define HUAWEI_VENDOR_ID	0x12D1
+#define QMI_GOBI_DEVICE(vend, prod) \
+	USB_DEVICE(vend, prod), \
+	.driver_info = (unsigned long)&qmi_wwan_gobi
+
+static const struct usb_device_id products[] = {
+	{	/* Huawei E392, E398 and possibly others sharing both device id and more... */
+		.match_flags        = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_INT_INFO,
+		.idVendor           = HUAWEI_VENDOR_ID,
+		.bInterfaceClass    = USB_CLASS_VENDOR_SPEC,
+		.bInterfaceSubClass = 1,
+		.bInterfaceProtocol = 8, /* NOTE: This is the *slave* interface of the CDC Union! */
+		.driver_info        = (unsigned long)&qmi_wwan_info,
+	},
+	{	/* Huawei E392, E398 and possibly others in "Windows mode"
+		 * using a combined control and data interface without any CDC
+		 * functional descriptors
+		 */
+		.match_flags        = USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_INT_INFO,
+		.idVendor           = HUAWEI_VENDOR_ID,
+		.bInterfaceClass    = USB_CLASS_VENDOR_SPEC,
+		.bInterfaceSubClass = 1,
+		.bInterfaceProtocol = 17,
+		.driver_info        = (unsigned long)&qmi_wwan_shared,
+	},
+	{	/* Pantech UML290 */
+		.match_flags	    = USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_INT_INFO,
+		.idVendor           = 0x106c,
+		.idProduct          = 0x3718,
+		.bInterfaceClass    = 0xff,
+		.bInterfaceSubClass = 0xf0,
+		.bInterfaceProtocol = 0xff,
+		.driver_info        = (unsigned long)&qmi_wwan_shared,
+	},
+	{QMI_GOBI_DEVICE(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */
+	{QMI_GOBI_DEVICE(0x03f0, 0x1f1d)},	/* HP un2400 Gobi Modem Device */
+	{QMI_GOBI_DEVICE(0x03f0, 0x371d)},	/* HP un2430 Mobile Broadband Module */
+	{QMI_GOBI_DEVICE(0x04da, 0x250d)},	/* Panasonic Gobi Modem device */
+	{QMI_GOBI_DEVICE(0x413c, 0x8172)},	/* Dell Gobi Modem device */
+	{QMI_GOBI_DEVICE(0x1410, 0xa001)},	/* Novatel Gobi Modem device */
+	{QMI_GOBI_DEVICE(0x0b05, 0x1776)},	/* Asus Gobi Modem device */
+	{QMI_GOBI_DEVICE(0x19d2, 0xfff3)},	/* ONDA Gobi Modem device */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9001)},	/* Generic Gobi Modem device */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9002)},	/* Generic Gobi Modem device */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9202)},	/* Generic Gobi Modem device */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9203)},	/* Generic Gobi Modem device */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9222)},	/* Generic Gobi Modem device */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9009)},	/* Generic Gobi Modem device */
+	{QMI_GOBI_DEVICE(0x413c, 0x8186)},	/* Dell Gobi 2000 Modem device (N0218, VU936) */
+	{QMI_GOBI_DEVICE(0x05c6, 0x920b)},	/* Generic Gobi 2000 Modem device */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9225)},	/* Sony Gobi 2000 Modem device (N0279, VU730) */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9245)},	/* Samsung Gobi 2000 Modem device (VL176) */
+	{QMI_GOBI_DEVICE(0x03f0, 0x251d)},	/* HP Gobi 2000 Modem device (VP412) */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9215)},	/* Acer Gobi 2000 Modem device (VP413) */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9265)},	/* Asus Gobi 2000 Modem device (VR305) */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9235)},	/* Top Global Gobi 2000 Modem device (VR306) */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9275)},	/* iRex Technologies Gobi 2000 Modem device (VR307) */
+	{QMI_GOBI_DEVICE(0x1199, 0x9001)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
+	{QMI_GOBI_DEVICE(0x1199, 0x9002)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
+	{QMI_GOBI_DEVICE(0x1199, 0x9003)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
+	{QMI_GOBI_DEVICE(0x1199, 0x9004)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
+	{QMI_GOBI_DEVICE(0x1199, 0x9005)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
+	{QMI_GOBI_DEVICE(0x1199, 0x9006)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
+	{QMI_GOBI_DEVICE(0x1199, 0x9007)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
+	{QMI_GOBI_DEVICE(0x1199, 0x9008)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
+	{QMI_GOBI_DEVICE(0x1199, 0x9009)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
+	{QMI_GOBI_DEVICE(0x1199, 0x900a)},	/* Sierra Wireless Gobi 2000 Modem device (VT773) */
+	{QMI_GOBI_DEVICE(0x1199, 0x9011)},	/* Sierra Wireless Gobi 2000 Modem device (MC8305) */
+	{QMI_GOBI_DEVICE(0x16d8, 0x8002)},	/* CMDTech Gobi 2000 Modem device (VU922) */
+	{QMI_GOBI_DEVICE(0x05c6, 0x9205)},	/* Gobi 2000 Modem device */
+	{QMI_GOBI_DEVICE(0x1199, 0x9013)},	/* Sierra Wireless Gobi 3000 Modem device (MC8355) */
+	{ }					/* END */
+};
+MODULE_DEVICE_TABLE(usb, products);
+
+static struct usb_driver qmi_wwan_driver = {
+	.name		      = "qmi_wwan",
+	.id_table	      = products,
+	.probe		      =	usbnet_probe,
+	.disconnect	      = usbnet_disconnect,
+	.suspend	      = qmi_wwan_suspend,
+	.resume		      =	qmi_wwan_resume,
+	.reset_resume         = qmi_wwan_resume,
+	.supports_autosuspend = 1,
+};
+
+static int __init qmi_wwan_init(void)
+{
+	return usb_register(&qmi_wwan_driver);
+}
+module_init(qmi_wwan_init);
+
+static void __exit qmi_wwan_exit(void)
+{
+	usb_deregister(&qmi_wwan_driver);
+}
+module_exit(qmi_wwan_exit);
+
+MODULE_AUTHOR("Bjørn Mork <bjorn@mork.no>");
+MODULE_DESCRIPTION("Qualcomm MSM Interface (QMI) WWAN driver");
+MODULE_LICENSE("GPL");

drivers/power/isp1704_charger.c

@@ -56,7 +56,7 @@ static u16 isp170x_id[] = {
 struct isp1704_charger {
 	struct device		*dev;
 	struct power_supply	psy;
-	struct otg_transceiver	*otg;
+	struct usb_phy		*phy;
 	struct notifier_block	nb;
 	struct work_struct	work;
 
@@ -71,6 +71,16 @@ struct isp1704_charger {
 	unsigned		max_power;
 };
 
+static inline int isp1704_read(struct isp1704_charger *isp, u32 reg)
+{
+	return usb_phy_io_read(isp->phy, reg);
+}
+
+static inline int isp1704_write(struct isp1704_charger *isp, u32 val, u32 reg)
+{
+	return usb_phy_io_write(isp->phy, val, reg);
+}
+
 /*
  * Disable/enable the power from the isp1704 if a function for it
  * has been provided with platform data.
@@ -97,31 +107,31 @@ static inline int isp1704_charger_type(struct isp1704_charger *isp)
 	u8 otg_ctrl;
 	int type = POWER_SUPPLY_TYPE_USB_DCP;
 
-	func_ctrl = otg_io_read(isp->otg, ULPI_FUNC_CTRL);
-	otg_ctrl = otg_io_read(isp->otg, ULPI_OTG_CTRL);
+	func_ctrl = isp1704_read(isp, ULPI_FUNC_CTRL);
+	otg_ctrl = isp1704_read(isp, ULPI_OTG_CTRL);
 
 	/* disable pulldowns */
 	reg = ULPI_OTG_CTRL_DM_PULLDOWN | ULPI_OTG_CTRL_DP_PULLDOWN;
-	otg_io_write(isp->otg, ULPI_CLR(ULPI_OTG_CTRL), reg);
+	isp1704_write(isp, ULPI_CLR(ULPI_OTG_CTRL), reg);
 
 	/* full speed */
-	otg_io_write(isp->otg, ULPI_CLR(ULPI_FUNC_CTRL),
+	isp1704_write(isp, ULPI_CLR(ULPI_FUNC_CTRL),
 			ULPI_FUNC_CTRL_XCVRSEL_MASK);
-	otg_io_write(isp->otg, ULPI_SET(ULPI_FUNC_CTRL),
+	isp1704_write(isp, ULPI_SET(ULPI_FUNC_CTRL),
 			ULPI_FUNC_CTRL_FULL_SPEED);
 
 	/* Enable strong pull-up on DP (1.5K) and reset */
 	reg = ULPI_FUNC_CTRL_TERMSELECT | ULPI_FUNC_CTRL_RESET;
-	otg_io_write(isp->otg, ULPI_SET(ULPI_FUNC_CTRL), reg);
+	isp1704_write(isp, ULPI_SET(ULPI_FUNC_CTRL), reg);
 	usleep_range(1000, 2000);
 
-	reg = otg_io_read(isp->otg, ULPI_DEBUG);
+	reg = isp1704_read(isp, ULPI_DEBUG);
 	if ((reg & 3) != 3)
 		type = POWER_SUPPLY_TYPE_USB_CDP;
 
 	/* recover original state */
-	otg_io_write(isp->otg, ULPI_FUNC_CTRL, func_ctrl);
-	otg_io_write(isp->otg, ULPI_OTG_CTRL, otg_ctrl);
+	isp1704_write(isp, ULPI_FUNC_CTRL, func_ctrl);
+	isp1704_write(isp, ULPI_OTG_CTRL, otg_ctrl);
 
 	return type;
 }
@@ -136,28 +146,28 @@ static inline int isp1704_charger_verify(struct isp1704_charger *isp)
 	u8	r;
 
 	/* Reset the transceiver */
-	r = otg_io_read(isp->otg, ULPI_FUNC_CTRL);
+	r = isp1704_read(isp, ULPI_FUNC_CTRL);
 	r |= ULPI_FUNC_CTRL_RESET;
-	otg_io_write(isp->otg, ULPI_FUNC_CTRL, r);
+	isp1704_write(isp, ULPI_FUNC_CTRL, r);
 	usleep_range(1000, 2000);
 
 	/* Set normal mode */
 	r &= ~(ULPI_FUNC_CTRL_RESET | ULPI_FUNC_CTRL_OPMODE_MASK);
-	otg_io_write(isp->otg, ULPI_FUNC_CTRL, r);
+	isp1704_write(isp, ULPI_FUNC_CTRL, r);
 
 	/* Clear the DP and DM pull-down bits */
 	r = ULPI_OTG_CTRL_DP_PULLDOWN | ULPI_OTG_CTRL_DM_PULLDOWN;
-	otg_io_write(isp->otg, ULPI_CLR(ULPI_OTG_CTRL), r);
+	isp1704_write(isp, ULPI_CLR(ULPI_OTG_CTRL), r);
 
 	/* Enable strong pull-up on DP (1.5K) and reset */
 	r = ULPI_FUNC_CTRL_TERMSELECT | ULPI_FUNC_CTRL_RESET;
-	otg_io_write(isp->otg, ULPI_SET(ULPI_FUNC_CTRL), r);
+	isp1704_write(isp, ULPI_SET(ULPI_FUNC_CTRL), r);
 	usleep_range(1000, 2000);
 
 	/* Read the line state */
-	if (!otg_io_read(isp->otg, ULPI_DEBUG)) {
+	if (!isp1704_read(isp, ULPI_DEBUG)) {
 		/* Disable strong pull-up on DP (1.5K) */
-		otg_io_write(isp->otg, ULPI_CLR(ULPI_FUNC_CTRL),
+		isp1704_write(isp, ULPI_CLR(ULPI_FUNC_CTRL),
 				ULPI_FUNC_CTRL_TERMSELECT);
 		return 1;
 	}
@@ -165,23 +175,23 @@ static inline int isp1704_charger_verify(struct isp1704_charger *isp)
 	/* Is it a charger or PS/2 connection */
 
 	/* Enable weak pull-up resistor on DP */
-	otg_io_write(isp->otg, ULPI_SET(ISP1704_PWR_CTRL),
+	isp1704_write(isp, ULPI_SET(ISP1704_PWR_CTRL),
 			ISP1704_PWR_CTRL_DP_WKPU_EN);
 
 	/* Disable strong pull-up on DP (1.5K) */
-	otg_io_write(isp->otg, ULPI_CLR(ULPI_FUNC_CTRL),
+	isp1704_write(isp, ULPI_CLR(ULPI_FUNC_CTRL),
 			ULPI_FUNC_CTRL_TERMSELECT);
 
 	/* Enable weak pull-down resistor on DM */
-	otg_io_write(isp->otg, ULPI_SET(ULPI_OTG_CTRL),
+	isp1704_write(isp, ULPI_SET(ULPI_OTG_CTRL),
 			ULPI_OTG_CTRL_DM_PULLDOWN);
 
 	/* It's a charger if the line states are clear */
-	if (!(otg_io_read(isp->otg, ULPI_DEBUG)))
+	if (!(isp1704_read(isp, ULPI_DEBUG)))
 		ret = 1;
 
 	/* Disable weak pull-up resistor on DP */
-	otg_io_write(isp->otg, ULPI_CLR(ISP1704_PWR_CTRL),
+	isp1704_write(isp, ULPI_CLR(ISP1704_PWR_CTRL),
 			ISP1704_PWR_CTRL_DP_WKPU_EN);
 
 	return ret;
@@ -193,14 +203,14 @@ static inline int isp1704_charger_detect(struct isp1704_charger *isp)
 	u8		pwr_ctrl;
 	int		ret = 0;
 
-	pwr_ctrl = otg_io_read(isp->otg, ISP1704_PWR_CTRL);
+	pwr_ctrl = isp1704_read(isp, ISP1704_PWR_CTRL);
 
 	/* set SW control bit in PWR_CTRL register */
-	otg_io_write(isp->otg, ISP1704_PWR_CTRL,
+	isp1704_write(isp, ISP1704_PWR_CTRL,
 			ISP1704_PWR_CTRL_SWCTRL);
 
 	/* enable manual charger detection */
-	otg_io_write(isp->otg, ULPI_SET(ISP1704_PWR_CTRL),
+	isp1704_write(isp, ULPI_SET(ISP1704_PWR_CTRL),
 			ISP1704_PWR_CTRL_SWCTRL
 			| ISP1704_PWR_CTRL_DPVSRC_EN);
 	usleep_range(1000, 2000);
@@ -208,7 +218,7 @@ static inline int isp1704_charger_detect(struct isp1704_charger *isp)
 	timeout = jiffies + msecs_to_jiffies(300);
 	do {
 		/* Check if there is a charger */
-		if (otg_io_read(isp->otg, ISP1704_PWR_CTRL)
+		if (isp1704_read(isp, ISP1704_PWR_CTRL)
 				& ISP1704_PWR_CTRL_VDAT_DET) {
 			ret = isp1704_charger_verify(isp);
 			break;
@@ -216,7 +226,7 @@ static inline int isp1704_charger_detect(struct isp1704_charger *isp)
 	} while (!time_after(jiffies, timeout) && isp->online);
 
 	/* recover original state */
-	otg_io_write(isp->otg, ISP1704_PWR_CTRL, pwr_ctrl);
+	isp1704_write(isp, ISP1704_PWR_CTRL, pwr_ctrl);
 
 	return ret;
 }
@@ -264,8 +274,8 @@ static void isp1704_charger_work(struct work_struct *data)
 		case POWER_SUPPLY_TYPE_USB:
 		default:
 			/* enable data pullups */
-			if (isp->otg->gadget)
-				usb_gadget_connect(isp->otg->gadget);
+			if (isp->phy->otg->gadget)
+				usb_gadget_connect(isp->phy->otg->gadget);
 		}
 		break;
 	case USB_EVENT_NONE:
@@ -283,8 +293,8 @@ static void isp1704_charger_work(struct work_struct *data)
 		 * chargers. The pullups may be enabled elsewhere, so this can
 		 * not be the final solution.
 		 */
-		if (isp->otg->gadget)
-			usb_gadget_disconnect(isp->otg->gadget);
+		if (isp->phy->otg->gadget)
+			usb_gadget_disconnect(isp->phy->otg->gadget);
 
 		isp1704_charger_set_power(isp, 0);
 		break;
@@ -364,11 +374,11 @@ static inline int isp1704_test_ulpi(struct isp1704_charger *isp)
 	int ret = -ENODEV;
 
 	/* Test ULPI interface */
-	ret = otg_io_write(isp->otg, ULPI_SCRATCH, 0xaa);
+	ret = isp1704_write(isp, ULPI_SCRATCH, 0xaa);
 	if (ret < 0)
 		return ret;
 
-	ret = otg_io_read(isp->otg, ULPI_SCRATCH);
+	ret = isp1704_read(isp, ULPI_SCRATCH);
 	if (ret < 0)
 		return ret;
 
@@ -376,13 +386,13 @@ static inline int isp1704_test_ulpi(struct isp1704_charger *isp)
 		return -ENODEV;
 
 	/* Verify the product and vendor id matches */
-	vendor = otg_io_read(isp->otg, ULPI_VENDOR_ID_LOW);
-	vendor |= otg_io_read(isp->otg, ULPI_VENDOR_ID_HIGH) << 8;
+	vendor = isp1704_read(isp, ULPI_VENDOR_ID_LOW);
+	vendor |= isp1704_read(isp, ULPI_VENDOR_ID_HIGH) << 8;
 	if (vendor != NXP_VENDOR_ID)
 		return -ENODEV;
 
-	product = otg_io_read(isp->otg, ULPI_PRODUCT_ID_LOW);
-	product |= otg_io_read(isp->otg, ULPI_PRODUCT_ID_HIGH) << 8;
+	product = isp1704_read(isp, ULPI_PRODUCT_ID_LOW);
+	product |= isp1704_read(isp, ULPI_PRODUCT_ID_HIGH) << 8;
 
 	for (i = 0; i < ARRAY_SIZE(isp170x_id); i++) {
 		if (product == isp170x_id[i]) {
@@ -405,8 +415,8 @@ static int __devinit isp1704_charger_probe(struct platform_device *pdev)
 	if (!isp)
 		return -ENOMEM;
 
-	isp->otg = otg_get_transceiver();
-	if (!isp->otg)
+	isp->phy = usb_get_transceiver();
+	if (!isp->phy)
 		goto fail0;
 
 	isp->dev = &pdev->dev;
@@ -429,14 +439,14 @@ static int __devinit isp1704_charger_probe(struct platform_device *pdev)
 		goto fail1;
 
 	/*
-	 * REVISIT: using work in order to allow the otg notifications to be
+	 * REVISIT: using work in order to allow the usb notifications to be
 	 * made atomically in the future.
 	 */
 	INIT_WORK(&isp->work, isp1704_charger_work);
 
 	isp->nb.notifier_call = isp1704_notifier_call;
 
-	ret = otg_register_notifier(isp->otg, &isp->nb);
+	ret = usb_register_notifier(isp->phy, &isp->nb);
 	if (ret)
 		goto fail2;
 
@@ -449,13 +459,13 @@ static int __devinit isp1704_charger_probe(struct platform_device *pdev)
 	 * enumerated. The charger driver should be always loaded before any
 	 * gadget is loaded.
 	 */
-	if (isp->otg->gadget)
-		usb_gadget_disconnect(isp->otg->gadget);
+	if (isp->phy->otg->gadget)
+		usb_gadget_disconnect(isp->phy->otg->gadget);
 
 	/* Detect charger if VBUS is valid (the cable was already plugged). */
-	ret = otg_io_read(isp->otg, ULPI_USB_INT_STS);
+	ret = isp1704_read(isp, ULPI_USB_INT_STS);
 	isp1704_charger_set_power(isp, 0);
-	if ((ret & ULPI_INT_VBUS_VALID) && !isp->otg->default_a) {
+	if ((ret & ULPI_INT_VBUS_VALID) && !isp->phy->otg->default_a) {
 		isp->event = USB_EVENT_VBUS;
 		schedule_work(&isp->work);
 	}
@@ -464,7 +474,7 @@ static int __devinit isp1704_charger_probe(struct platform_device *pdev)
 fail2:
 	power_supply_unregister(&isp->psy);
 fail1:
-	otg_put_transceiver(isp->otg);
+	usb_put_transceiver(isp->phy);
 fail0:
 	kfree(isp);
 
@@ -477,9 +487,9 @@ static int __devexit isp1704_charger_remove(struct platform_device *pdev)
 {
 	struct isp1704_charger *isp = platform_get_drvdata(pdev);
 
-	otg_unregister_notifier(isp->otg, &isp->nb);
+	usb_unregister_notifier(isp->phy, &isp->nb);
 	power_supply_unregister(&isp->psy);
-	otg_put_transceiver(isp->otg);
+	usb_put_transceiver(isp->phy);
 	isp1704_charger_set_power(isp, 0);
 	kfree(isp);
 

drivers/power/pda_power.c

@@ -40,7 +40,7 @@ static struct timer_list polling_timer;
 static int polling;
 
 #ifdef CONFIG_USB_OTG_UTILS
-static struct otg_transceiver *transceiver;
+static struct usb_phy *transceiver;
 static struct notifier_block otg_nb;
 #endif
 
@@ -321,7 +321,7 @@ static int pda_power_probe(struct platform_device *pdev)
 	}
 
 #ifdef CONFIG_USB_OTG_UTILS
-	transceiver = otg_get_transceiver();
+	transceiver = usb_get_transceiver();
 	if (transceiver && !pdata->is_usb_online) {
 		pdata->is_usb_online = otg_is_usb_online;
 	}
@@ -375,7 +375,7 @@ static int pda_power_probe(struct platform_device *pdev)
 #ifdef CONFIG_USB_OTG_UTILS
 	if (transceiver && pdata->use_otg_notifier) {
 		otg_nb.notifier_call = otg_handle_notification;
-		ret = otg_register_notifier(transceiver, &otg_nb);
+		ret = usb_register_notifier(transceiver, &otg_nb);
 		if (ret) {
 			dev_err(dev, "failure to register otg notifier\n");
 			goto otg_reg_notifier_failed;
@@ -409,7 +409,7 @@ usb_supply_failed:
 		free_irq(ac_irq->start, &pda_psy_ac);
 #ifdef CONFIG_USB_OTG_UTILS
 	if (transceiver)
-		otg_put_transceiver(transceiver);
+		usb_put_transceiver(transceiver);
 #endif
 ac_irq_failed:
 	if (pdata->is_ac_online)
@@ -444,7 +444,7 @@ static int pda_power_remove(struct platform_device *pdev)
 		power_supply_unregister(&pda_psy_ac);
 #ifdef CONFIG_USB_OTG_UTILS
 	if (transceiver)
-		otg_put_transceiver(transceiver);
+		usb_put_transceiver(transceiver);
 #endif
 	if (ac_draw) {
 		regulator_put(ac_draw);

drivers/power/twl4030_charger.c

@@ -69,8 +69,8 @@ struct twl4030_bci {
 	struct device		*dev;
 	struct power_supply	ac;
 	struct power_supply	usb;
-	struct otg_transceiver	*transceiver;
-	struct notifier_block	otg_nb;
+	struct usb_phy		*transceiver;
+	struct notifier_block	usb_nb;
 	struct work_struct	work;
 	int			irq_chg;
 	int			irq_bci;
@@ -279,7 +279,7 @@ static void twl4030_bci_usb_work(struct work_struct *data)
 static int twl4030_bci_usb_ncb(struct notifier_block *nb, unsigned long val,
 			       void *priv)
 {
-	struct twl4030_bci *bci = container_of(nb, struct twl4030_bci, otg_nb);
+	struct twl4030_bci *bci = container_of(nb, struct twl4030_bci, usb_nb);
 
 	dev_dbg(bci->dev, "OTG notify %lu\n", val);
 
@@ -479,10 +479,10 @@ static int __init twl4030_bci_probe(struct platform_device *pdev)
 
 	INIT_WORK(&bci->work, twl4030_bci_usb_work);
 
-	bci->transceiver = otg_get_transceiver();
+	bci->transceiver = usb_get_transceiver();
 	if (bci->transceiver != NULL) {
-		bci->otg_nb.notifier_call = twl4030_bci_usb_ncb;
-		otg_register_notifier(bci->transceiver, &bci->otg_nb);
+		bci->usb_nb.notifier_call = twl4030_bci_usb_ncb;
+		usb_register_notifier(bci->transceiver, &bci->usb_nb);
 	}
 
 	/* Enable interrupts now. */
@@ -508,8 +508,8 @@ static int __init twl4030_bci_probe(struct platform_device *pdev)
 
 fail_unmask_interrupts:
 	if (bci->transceiver != NULL) {
-		otg_unregister_notifier(bci->transceiver, &bci->otg_nb);
-		otg_put_transceiver(bci->transceiver);
+		usb_unregister_notifier(bci->transceiver, &bci->usb_nb);
+		usb_put_transceiver(bci->transceiver);
 	}
 	free_irq(bci->irq_bci, bci);
 fail_bci_irq:
@@ -539,8 +539,8 @@ static int __exit twl4030_bci_remove(struct platform_device *pdev)
 			 TWL4030_INTERRUPTS_BCIIMR2A);
 
 	if (bci->transceiver != NULL) {
-		otg_unregister_notifier(bci->transceiver, &bci->otg_nb);
-		otg_put_transceiver(bci->transceiver);
+		usb_unregister_notifier(bci->transceiver, &bci->usb_nb);
+		usb_put_transceiver(bci->transceiver);
 	}
 	free_irq(bci->irq_bci, bci);
 	free_irq(bci->irq_chg, bci);

drivers/scsi/scsi_scan.c

@@ -1295,6 +1295,7 @@ EXPORT_SYMBOL(int_to_scsilun);
  *   LUNs even if it's older than SCSI-3.
  *   If BLIST_NOREPORTLUN is set, return 1 always.
  *   If BLIST_NOLUN is set, return 0 always.
+ *   If starget->no_report_luns is set, return 1 always.
  *
  * Return:
  *     0: scan completed (or no memory, so further scanning is futile)
@@ -1321,6 +1322,7 @@ static int scsi_report_lun_scan(struct scsi_target *starget, int bflags,
 	 * Only support SCSI-3 and up devices if BLIST_NOREPORTLUN is not set.
 	 * Also allow SCSI-2 if BLIST_REPORTLUN2 is set and host adapter does
 	 * support more than 8 LUNs.
+	 * Don't attempt if the target doesn't support REPORT LUNS.
 	 */
 	if (bflags & BLIST_NOREPORTLUN)
 		return 1;
@@ -1332,6 +1334,8 @@ static int scsi_report_lun_scan(struct scsi_target *starget, int bflags,
 		return 1;
 	if (bflags & BLIST_NOLUN)
 		return 0;
+	if (starget->no_report_luns)
+		return 1;
 
 	if (!(sdev = scsi_device_lookup_by_target(starget, 0))) {
 		sdev = scsi_alloc_sdev(starget, 0, NULL);

drivers/scsi/sd.c

@@ -2349,7 +2349,7 @@ static int sd_try_extended_inquiry(struct scsi_device *sdp)
 	 * some USB ones crash on receiving them, and the pages
 	 * we currently ask for are for SPC-3 and beyond
 	 */
-	if (sdp->scsi_level > SCSI_SPC_2)
+	if (sdp->scsi_level > SCSI_SPC_2 && !sdp->skip_vpd_pages)
 		return 1;
 	return 0;
 }

drivers/staging/keucr/transport.h

@@ -3,43 +3,6 @@
 
 #include <linux/blkdev.h>
 
-/* Bulk only data structures */
-
-/* command block wrapper */
-struct bulk_cb_wrap {
-	__le32	Signature;			/* contains 'USBC' */
-	__u32	Tag;				/* unique per command id */
-	__le32	DataTransferLength;	/* size of data */
-	__u8	Flags;				/* direction in bit 0 */
-	__u8	Lun;					/* LUN normally 0 */
-	__u8	Length;				/* of of the CDB */
-	__u8	CDB[16];				/* max command */
-};
-
-#define US_BULK_CB_WRAP_LEN	31
-#define US_BULK_CB_SIGN		0x43425355	/*spells out USBC */
-#define US_BULK_FLAG_IN		1
-#define US_BULK_FLAG_OUT	0
-
-/* command status wrapper */
-struct bulk_cs_wrap {
-	__le32	Signature;		/* should = 'USBS' */
-	__u32		Tag;			/* same as original command */
-	__le32	Residue;		/* amount not transferred */
-	__u8		Status;		/* see below */
-	__u8		Filler[18];
-};
-
-#define US_BULK_CS_WRAP_LEN	13
-#define US_BULK_CS_SIGN		0x53425355	/* spells out 'USBS' */
-#define US_BULK_STAT_OK		0
-#define US_BULK_STAT_FAIL	1
-#define US_BULK_STAT_PHASE	2
-
-/* bulk-only class specific requests */
-#define US_BULK_RESET_REQUEST	0xff
-#define US_BULK_GET_MAX_LUN	0xfe
-
 /* usb_stor_bulk_transfer_xxx() return codes, in order of severity */
 #define USB_STOR_XFER_GOOD	0	/* good transfer                 */
 #define USB_STOR_XFER_SHORT	1	/* transferred less than expected */

drivers/staging/quatech_usb2/quatech_usb2.c

@@ -135,7 +135,6 @@ static struct usb_driver quausb2_usb_driver = {
 	.probe = usb_serial_probe,
 	.disconnect = usb_serial_disconnect,
 	.id_table = quausb2_id_table,
-	.no_dynamic_id = 1,
 };
 
 /**
@@ -1942,7 +1941,6 @@ static struct usb_serial_driver quatech2_device = {
 		.name = "quatech_usb2",
 	},
 	.description = DRIVER_DESC,
-	.usb_driver = &quausb2_usb_driver,
 	.id_table = quausb2_id_table,
 	.num_ports = 8,
 	.open = qt2_open,
@@ -1964,41 +1962,11 @@ static struct usb_serial_driver quatech2_device = {
 	.write_bulk_callback = qt2_write_bulk_callback,
 };
 
-static int __init quausb2_usb_init(void)
-{
-	int retval;
-
-	dbg("%s\n", __func__);
-
-	/* register with usb-serial */
-	retval = usb_serial_register(&quatech2_device);
-
-	if (retval)
-		goto failed_usb_serial_register;
-
-	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
-			DRIVER_DESC "\n");
-
-	/* register with usb */
-
-	retval = usb_register(&quausb2_usb_driver);
-	if (retval == 0)
-		return 0;
-
-	/* if we're here, usb_register() failed */
-	usb_serial_deregister(&quatech2_device);
-failed_usb_serial_register:
-		return retval;
-}
-
-static void __exit quausb2_usb_exit(void)
-{
-	usb_deregister(&quausb2_usb_driver);
-	usb_serial_deregister(&quatech2_device);
-}
+static struct usb_serial_driver * const serial_drivers[] = {
+	&quatech2_device, NULL
+};
 
-module_init(quausb2_usb_init);
-module_exit(quausb2_usb_exit);
+module_usb_serial_driver(quausb2_usb_driver, serial_drivers);
 
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);

drivers/staging/serqt_usb2/serqt_usb2.c

@@ -200,7 +200,6 @@ static struct usb_driver serqt_usb_driver = {
 	.probe = usb_serial_probe,
 	.disconnect = usb_serial_disconnect,
 	.id_table = serqt_id_table,
-	.no_dynamic_id = 1,
 };
 
 static int port_paranoia_check(struct usb_serial_port *port,
@@ -1590,7 +1589,6 @@ static struct usb_serial_driver quatech_device = {
 		   .name = "serqt",
 		   },
 	.description = DRIVER_DESC,
-	.usb_driver = &serqt_usb_driver,
 	.id_table = serqt_id_table,
 	.num_ports = 8,
 	.open = qt_open,
@@ -1610,41 +1608,11 @@ static struct usb_serial_driver quatech_device = {
 	.release = qt_release,
 };
 
-static int __init serqt_usb_init(void)
-{
-	int retval;
-
-	dbg("%s\n", __func__);
-
-	/* register with usb-serial */
-	retval = usb_serial_register(&quatech_device);
-
-	if (retval)
-		goto failed_usb_serial_register;
-
-	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
-	       DRIVER_DESC "\n");
-
-	/* register with usb */
-
-	retval = usb_register(&serqt_usb_driver);
-	if (retval == 0)
-		return 0;
-
-	/* if we're here, usb_register() failed */
-	usb_serial_deregister(&quatech_device);
-failed_usb_serial_register:
-	return retval;
-}
-
-static void __exit serqt_usb_exit(void)
-{
-	usb_deregister(&serqt_usb_driver);
-	usb_serial_deregister(&quatech_device);
-}
+static struct usb_serial_driver * const serial_drivers[] = {
+	&quatech_device, NULL
+};
 
-module_init(serqt_usb_init);
-module_exit(serqt_usb_exit);
+module_usb_serial_driver(serqt_usb_driver, serial_drivers);
 
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);

drivers/usb/Kconfig

@@ -76,6 +76,7 @@ config USB_ARCH_HAS_EHCI
 	default y if MICROBLAZE
 	default y if SPARC_LEON
 	default y if ARCH_MMP
+	default y if MACH_LOONGSON1
 	default PCI
 
 # some non-PCI HCDs implement xHCI

drivers/usb/class/cdc-acm.c

@@ -39,6 +39,7 @@
 #include <linux/serial.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
+#include <linux/serial.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/uaccess.h>
@@ -773,10 +774,37 @@ static int acm_tty_tiocmset(struct tty_struct *tty,
 	return acm_set_control(acm, acm->ctrlout = newctrl);
 }
 
+static int get_serial_info(struct acm *acm, struct serial_struct __user *info)
+{
+	struct serial_struct tmp;
+
+	if (!info)
+		return -EINVAL;
+
+	memset(&tmp, 0, sizeof(tmp));
+	tmp.flags = ASYNC_LOW_LATENCY;
+	tmp.xmit_fifo_size = acm->writesize;
+	tmp.baud_base = le32_to_cpu(acm->line.dwDTERate);
+
+	if (copy_to_user(info, &tmp, sizeof(tmp)))
+		return -EFAULT;
+	else
+		return 0;
+}
+
 static int acm_tty_ioctl(struct tty_struct *tty,
 					unsigned int cmd, unsigned long arg)
 {
-	return -ENOIOCTLCMD;
+	struct acm *acm = tty->driver_data;
+	int rv = -ENOIOCTLCMD;
+
+	switch (cmd) {
+	case TIOCGSERIAL: /* gets serial port data */
+		rv = get_serial_info(acm, (struct serial_struct __user *) arg);
+		break;
+	}
+
+	return rv;
 }
 
 static const __u32 acm_tty_speed[] = {

drivers/usb/class/cdc-wdm.c

@@ -23,6 +23,7 @@
 #include <linux/usb/cdc.h>
 #include <asm/byteorder.h>
 #include <asm/unaligned.h>
+#include <linux/usb/cdc-wdm.h>
 
 /*
  * Version Information
@@ -31,6 +32,8 @@
 #define DRIVER_AUTHOR "Oliver Neukum"
 #define DRIVER_DESC "USB Abstract Control Model driver for USB WCM Device Management"
 
+#define HUAWEI_VENDOR_ID	0x12D1
+
 static const struct usb_device_id wdm_ids[] = {
 	{
 		.match_flags = USB_DEVICE_ID_MATCH_INT_CLASS |
@@ -38,6 +41,20 @@ static const struct usb_device_id wdm_ids[] = {
 		.bInterfaceClass = USB_CLASS_COMM,
 		.bInterfaceSubClass = USB_CDC_SUBCLASS_DMM
 	},
+	{
+		/* 
+		 * Huawei E392, E398 and possibly other Qualcomm based modems
+		 * embed the Qualcomm QMI protocol inside CDC on CDC ECM like
+		 * control interfaces.  Userspace access to this is required
+		 * to configure the accompanying data interface
+		 */
+		.match_flags        = USB_DEVICE_ID_MATCH_VENDOR |
+					USB_DEVICE_ID_MATCH_INT_INFO,
+		.idVendor           = HUAWEI_VENDOR_ID,
+		.bInterfaceClass    = USB_CLASS_VENDOR_SPEC,
+		.bInterfaceSubClass = 1,
+		.bInterfaceProtocol = 9, /* NOTE: CDC ECM control interface! */
+	},
 	{ }
 };
 
@@ -54,6 +71,7 @@ MODULE_DEVICE_TABLE (usb, wdm_ids);
 #define WDM_POLL_RUNNING	6
 #define WDM_RESPONDING		7
 #define WDM_SUSPENDING		8
+#define WDM_RESETTING		9
 
 #define WDM_MAX			16
 
@@ -61,6 +79,8 @@ MODULE_DEVICE_TABLE (usb, wdm_ids);
 #define WDM_DEFAULT_BUFSIZE	256
 
 static DEFINE_MUTEX(wdm_mutex);
+static DEFINE_SPINLOCK(wdm_device_list_lock);
+static LIST_HEAD(wdm_device_list);
 
 /* --- method tables --- */
 
@@ -82,7 +102,6 @@ struct wdm_device {
 	u16			bufsize;
 	u16			wMaxCommand;
 	u16			wMaxPacketSize;
-	u16			bMaxPacketSize0;
 	__le16			inum;
 	int			reslength;
 	int			length;
@@ -96,10 +115,40 @@ struct wdm_device {
 	struct work_struct	rxwork;
 	int			werr;
 	int			rerr;
+
+	struct list_head	device_list;
+	int			(*manage_power)(struct usb_interface *, int);
 };
 
 static struct usb_driver wdm_driver;
 
+/* return intfdata if we own the interface, else look up intf in the list */
+static struct wdm_device *wdm_find_device(struct usb_interface *intf)
+{
+	struct wdm_device *desc = NULL;
+
+	spin_lock(&wdm_device_list_lock);
+	list_for_each_entry(desc, &wdm_device_list, device_list)
+		if (desc->intf == intf)
+			break;
+	spin_unlock(&wdm_device_list_lock);
+
+	return desc;
+}
+
+static struct wdm_device *wdm_find_device_by_minor(int minor)
+{
+	struct wdm_device *desc = NULL;
+
+	spin_lock(&wdm_device_list_lock);
+	list_for_each_entry(desc, &wdm_device_list, device_list)
+		if (desc->intf->minor == minor)
+			break;
+	spin_unlock(&wdm_device_list_lock);
+
+	return desc;
+}
+
 /* --- callbacks --- */
 static void wdm_out_callback(struct urb *urb)
 {
@@ -162,11 +211,9 @@ static void wdm_int_callback(struct urb *urb)
 	int rv = 0;
 	int status = urb->status;
 	struct wdm_device *desc;
-	struct usb_ctrlrequest *req;
 	struct usb_cdc_notification *dr;
 
 	desc = urb->context;
-	req = desc->irq;
 	dr = (struct usb_cdc_notification *)desc->sbuf;
 
 	if (status) {
@@ -213,24 +260,6 @@ static void wdm_int_callback(struct urb *urb)
 		goto exit;
 	}
 
-	req->bRequestType = (USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE);
-	req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
-	req->wValue = 0;
-	req->wIndex = desc->inum;
-	req->wLength = cpu_to_le16(desc->wMaxCommand);
-
-	usb_fill_control_urb(
-		desc->response,
-		interface_to_usbdev(desc->intf),
-		/* using common endpoint 0 */
-		usb_rcvctrlpipe(interface_to_usbdev(desc->intf), 0),
-		(unsigned char *)req,
-		desc->inbuf,
-		desc->wMaxCommand,
-		wdm_in_callback,
-		desc
-	);
-	desc->response->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 	spin_lock(&desc->iuspin);
 	clear_bit(WDM_READ, &desc->flags);
 	set_bit(WDM_RESPONDING, &desc->flags);
@@ -279,14 +308,11 @@ static void free_urbs(struct wdm_device *desc)
 
 static void cleanup(struct wdm_device *desc)
 {
-	usb_free_coherent(interface_to_usbdev(desc->intf),
-			  desc->wMaxPacketSize,
-			  desc->sbuf,
-			  desc->validity->transfer_dma);
-	usb_free_coherent(interface_to_usbdev(desc->intf),
-			  desc->bMaxPacketSize0,
-			  desc->inbuf,
-			  desc->response->transfer_dma);
+	spin_lock(&wdm_device_list_lock);
+	list_del(&desc->device_list);
+	spin_unlock(&wdm_device_list_lock);
+	kfree(desc->sbuf);
+	kfree(desc->inbuf);
 	kfree(desc->orq);
 	kfree(desc->irq);
 	kfree(desc->ubuf);
@@ -351,6 +377,10 @@ static ssize_t wdm_write
 	else
 		if (test_bit(WDM_IN_USE, &desc->flags))
 			r = -EAGAIN;
+
+	if (test_bit(WDM_RESETTING, &desc->flags))
+		r = -EIO;
+
 	if (r < 0) {
 		kfree(buf);
 		goto out;
@@ -397,7 +427,7 @@ outnl:
 static ssize_t wdm_read
 (struct file *file, char __user *buffer, size_t count, loff_t *ppos)
 {
-	int rv, cntr = 0;
+	int rv, cntr;
 	int i = 0;
 	struct wdm_device *desc = file->private_data;
 
@@ -406,7 +436,8 @@ static ssize_t wdm_read
 	if (rv < 0)
 		return -ERESTARTSYS;
 
-	if (desc->length == 0) {
+	cntr = ACCESS_ONCE(desc->length);
+	if (cntr == 0) {
 		desc->read = 0;
 retry:
 		if (test_bit(WDM_DISCONNECTING, &desc->flags)) {
@@ -430,6 +461,10 @@ retry:
 			rv = -ENODEV;
 			goto err;
 		}
+		if (test_bit(WDM_RESETTING, &desc->flags)) {
+			rv = -EIO;
+			goto err;
+		}
 		usb_mark_last_busy(interface_to_usbdev(desc->intf));
 		if (rv < 0) {
 			rv = -ERESTARTSYS;
@@ -456,26 +491,30 @@ retry:
 			spin_unlock_irq(&desc->iuspin);
 			goto retry;
 		}
-		clear_bit(WDM_READ, &desc->flags);
+		cntr = desc->length;
 		spin_unlock_irq(&desc->iuspin);
 	}
 
-	cntr = count > desc->length ? desc->length : count;
+	if (cntr > count)
+		cntr = count;
 	rv = copy_to_user(buffer, desc->ubuf, cntr);
 	if (rv > 0) {
 		rv = -EFAULT;
 		goto err;
 	}
 
+	spin_lock_irq(&desc->iuspin);
+
 	for (i = 0; i < desc->length - cntr; i++)
 		desc->ubuf[i] = desc->ubuf[i + cntr];
 
-	spin_lock_irq(&desc->iuspin);
 	desc->length -= cntr;
-	spin_unlock_irq(&desc->iuspin);
 	/* in case we had outstanding data */
 	if (!desc->length)
 		clear_bit(WDM_READ, &desc->flags);
+
+	spin_unlock_irq(&desc->iuspin);
+
 	rv = cntr;
 
 err:
@@ -529,11 +568,11 @@ static int wdm_open(struct inode *inode, struct file *file)
 	struct wdm_device *desc;
 
 	mutex_lock(&wdm_mutex);
-	intf = usb_find_interface(&wdm_driver, minor);
-	if (!intf)
+	desc = wdm_find_device_by_minor(minor);
+	if (!desc)
 		goto out;
 
-	desc = usb_get_intfdata(intf);
+	intf = desc->intf;
 	if (test_bit(WDM_DISCONNECTING, &desc->flags))
 		goto out;
 	file->private_data = desc;
@@ -543,7 +582,6 @@ static int wdm_open(struct inode *inode, struct file *file)
 		dev_err(&desc->intf->dev, "Error autopm - %d\n", rv);
 		goto out;
 	}
-	intf->needs_remote_wakeup = 1;
 
 	/* using write lock to protect desc->count */
 	mutex_lock(&desc->wlock);
@@ -560,6 +598,8 @@ static int wdm_open(struct inode *inode, struct file *file)
 		rv = 0;
 	}
 	mutex_unlock(&desc->wlock);
+	if (desc->count == 1)
+		desc->manage_power(intf, 1);
 	usb_autopm_put_interface(desc->intf);
 out:
 	mutex_unlock(&wdm_mutex);
@@ -581,7 +621,7 @@ static int wdm_release(struct inode *inode, struct file *file)
 		dev_dbg(&desc->intf->dev, "wdm_release: cleanup");
 		kill_urbs(desc);
 		if (!test_bit(WDM_DISCONNECTING, &desc->flags))
-			desc->intf->needs_remote_wakeup = 0;
+			desc->manage_power(desc->intf, 0);
 	}
 	mutex_unlock(&wdm_mutex);
 	return 0;
@@ -628,71 +668,31 @@ static void wdm_rxwork(struct work_struct *work)
 
 /* --- hotplug --- */
 
-static int wdm_probe(struct usb_interface *intf, const struct usb_device_id *id)
+static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor *ep,
+		u16 bufsize, int (*manage_power)(struct usb_interface *, int))
 {
-	int rv = -EINVAL;
-	struct usb_device *udev = interface_to_usbdev(intf);
+	int rv = -ENOMEM;
 	struct wdm_device *desc;
-	struct usb_host_interface *iface;
-	struct usb_endpoint_descriptor *ep;
-	struct usb_cdc_dmm_desc *dmhd;
-	u8 *buffer = intf->altsetting->extra;
-	int buflen = intf->altsetting->extralen;
-	u16 maxcom = WDM_DEFAULT_BUFSIZE;
-
-	if (!buffer)
-		goto out;
 
-	while (buflen > 2) {
-		if (buffer [1] != USB_DT_CS_INTERFACE) {
-			dev_err(&intf->dev, "skipping garbage\n");
-			goto next_desc;
-		}
-
-		switch (buffer [2]) {
-		case USB_CDC_HEADER_TYPE:
-			break;
-		case USB_CDC_DMM_TYPE:
-			dmhd = (struct usb_cdc_dmm_desc *)buffer;
-			maxcom = le16_to_cpu(dmhd->wMaxCommand);
-			dev_dbg(&intf->dev,
-				"Finding maximum buffer length: %d", maxcom);
-			break;
-		default:
-			dev_err(&intf->dev,
-				"Ignoring extra header, type %d, length %d\n",
-				buffer[2], buffer[0]);
-			break;
-		}
-next_desc:
-		buflen -= buffer[0];
-		buffer += buffer[0];
-	}
-
-	rv = -ENOMEM;
 	desc = kzalloc(sizeof(struct wdm_device), GFP_KERNEL);
 	if (!desc)
 		goto out;
+	INIT_LIST_HEAD(&desc->device_list);
 	mutex_init(&desc->rlock);
 	mutex_init(&desc->wlock);
 	spin_lock_init(&desc->iuspin);
 	init_waitqueue_head(&desc->wait);
-	desc->wMaxCommand = maxcom;
+	desc->wMaxCommand = bufsize;
 	/* this will be expanded and needed in hardware endianness */
 	desc->inum = cpu_to_le16((u16)intf->cur_altsetting->desc.bInterfaceNumber);
 	desc->intf = intf;
 	INIT_WORK(&desc->rxwork, wdm_rxwork);
 
 	rv = -EINVAL;
-	iface = intf->cur_altsetting;
-	if (iface->desc.bNumEndpoints != 1)
-		goto err;
-	ep = &iface->endpoint[0].desc;
-	if (!ep || !usb_endpoint_is_int_in(ep))
+	if (!usb_endpoint_is_int_in(ep))
 		goto err;
 
 	desc->wMaxPacketSize = usb_endpoint_maxp(ep);
-	desc->bMaxPacketSize0 = udev->descriptor.bMaxPacketSize0;
 
 	desc->orq = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
 	if (!desc->orq)
@@ -717,19 +717,13 @@ next_desc:
 	if (!desc->ubuf)
 		goto err;
 
-	desc->sbuf = usb_alloc_coherent(interface_to_usbdev(intf),
-					desc->wMaxPacketSize,
-					GFP_KERNEL,
-					&desc->validity->transfer_dma);
+	desc->sbuf = kmalloc(desc->wMaxPacketSize, GFP_KERNEL);
 	if (!desc->sbuf)
 		goto err;
 
-	desc->inbuf = usb_alloc_coherent(interface_to_usbdev(intf),
-					 desc->wMaxCommand,
-					 GFP_KERNEL,
-					 &desc->response->transfer_dma);
+	desc->inbuf = kmalloc(desc->wMaxCommand, GFP_KERNEL);
 	if (!desc->inbuf)
-		goto err2;
+		goto err;
 
 	usb_fill_int_urb(
 		desc->validity,
@@ -741,45 +735,149 @@ next_desc:
 		desc,
 		ep->bInterval
 	);
-	desc->validity->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 
-	usb_set_intfdata(intf, desc);
+	desc->irq->bRequestType = (USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE);
+	desc->irq->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE;
+	desc->irq->wValue = 0;
+	desc->irq->wIndex = desc->inum;
+	desc->irq->wLength = cpu_to_le16(desc->wMaxCommand);
+
+	usb_fill_control_urb(
+		desc->response,
+		interface_to_usbdev(intf),
+		/* using common endpoint 0 */
+		usb_rcvctrlpipe(interface_to_usbdev(desc->intf), 0),
+		(unsigned char *)desc->irq,
+		desc->inbuf,
+		desc->wMaxCommand,
+		wdm_in_callback,
+		desc
+	);
+
+	desc->manage_power = manage_power;
+
+	spin_lock(&wdm_device_list_lock);
+	list_add(&desc->device_list, &wdm_device_list);
+	spin_unlock(&wdm_device_list_lock);
+
 	rv = usb_register_dev(intf, &wdm_class);
 	if (rv < 0)
-		goto err3;
+		goto err;
 	else
-		dev_info(&intf->dev, "cdc-wdm%d: USB WDM device\n",
-			intf->minor - WDM_MINOR_BASE);
+		dev_info(&intf->dev, "%s: USB WDM device\n", dev_name(intf->usb_dev));
 out:
 	return rv;
-err3:
-	usb_set_intfdata(intf, NULL);
-	usb_free_coherent(interface_to_usbdev(desc->intf),
-			  desc->bMaxPacketSize0,
-			desc->inbuf,
-			desc->response->transfer_dma);
-err2:
-	usb_free_coherent(interface_to_usbdev(desc->intf),
-			  desc->wMaxPacketSize,
-			  desc->sbuf,
-			  desc->validity->transfer_dma);
 err:
-	free_urbs(desc);
-	kfree(desc->ubuf);
-	kfree(desc->orq);
-	kfree(desc->irq);
-	kfree(desc);
+	cleanup(desc);
+	return rv;
+}
+
+static int wdm_manage_power(struct usb_interface *intf, int on)
+{
+	/* need autopm_get/put here to ensure the usbcore sees the new value */
+	int rv = usb_autopm_get_interface(intf);
+	if (rv < 0)
+		goto err;
+
+	intf->needs_remote_wakeup = on;
+	usb_autopm_put_interface(intf);
+err:
+	return rv;
+}
+
+static int wdm_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	int rv = -EINVAL;
+	struct usb_host_interface *iface;
+	struct usb_endpoint_descriptor *ep;
+	struct usb_cdc_dmm_desc *dmhd;
+	u8 *buffer = intf->altsetting->extra;
+	int buflen = intf->altsetting->extralen;
+	u16 maxcom = WDM_DEFAULT_BUFSIZE;
+
+	if (!buffer)
+		goto err;
+	while (buflen > 2) {
+		if (buffer[1] != USB_DT_CS_INTERFACE) {
+			dev_err(&intf->dev, "skipping garbage\n");
+			goto next_desc;
+		}
+
+		switch (buffer[2]) {
+		case USB_CDC_HEADER_TYPE:
+			break;
+		case USB_CDC_DMM_TYPE:
+			dmhd = (struct usb_cdc_dmm_desc *)buffer;
+			maxcom = le16_to_cpu(dmhd->wMaxCommand);
+			dev_dbg(&intf->dev,
+				"Finding maximum buffer length: %d", maxcom);
+			break;
+		default:
+			dev_err(&intf->dev,
+				"Ignoring extra header, type %d, length %d\n",
+				buffer[2], buffer[0]);
+			break;
+		}
+next_desc:
+		buflen -= buffer[0];
+		buffer += buffer[0];
+	}
+
+	iface = intf->cur_altsetting;
+	if (iface->desc.bNumEndpoints != 1)
+		goto err;
+	ep = &iface->endpoint[0].desc;
+
+	rv = wdm_create(intf, ep, maxcom, &wdm_manage_power);
+
+err:
 	return rv;
 }
 
+/**
+ * usb_cdc_wdm_register - register a WDM subdriver
+ * @intf: usb interface the subdriver will associate with
+ * @ep: interrupt endpoint to monitor for notifications
+ * @bufsize: maximum message size to support for read/write
+ *
+ * Create WDM usb class character device and associate it with intf
+ * without binding, allowing another driver to manage the interface.
+ *
+ * The subdriver will manage the given interrupt endpoint exclusively
+ * and will issue control requests referring to the given intf. It
+ * will otherwise avoid interferring, and in particular not do
+ * usb_set_intfdata/usb_get_intfdata on intf.
+ *
+ * The return value is a pointer to the subdriver's struct usb_driver.
+ * The registering driver is responsible for calling this subdriver's
+ * disconnect, suspend, resume, pre_reset and post_reset methods from
+ * its own.
+ */
+struct usb_driver *usb_cdc_wdm_register(struct usb_interface *intf,
+					struct usb_endpoint_descriptor *ep,
+					int bufsize,
+					int (*manage_power)(struct usb_interface *, int))
+{
+	int rv = -EINVAL;
+
+	rv = wdm_create(intf, ep, bufsize, manage_power);
+	if (rv < 0)
+		goto err;
+
+	return &wdm_driver;
+err:
+	return ERR_PTR(rv);
+}
+EXPORT_SYMBOL(usb_cdc_wdm_register);
+
 static void wdm_disconnect(struct usb_interface *intf)
 {
 	struct wdm_device *desc;
 	unsigned long flags;
 
 	usb_deregister_dev(intf, &wdm_class);
+	desc = wdm_find_device(intf);
 	mutex_lock(&wdm_mutex);
-	desc = usb_get_intfdata(intf);
 
 	/* the spinlock makes sure no new urbs are generated in the callbacks */
 	spin_lock_irqsave(&desc->iuspin, flags);
@@ -803,7 +901,7 @@ static void wdm_disconnect(struct usb_interface *intf)
 #ifdef CONFIG_PM
 static int wdm_suspend(struct usb_interface *intf, pm_message_t message)
 {
-	struct wdm_device *desc = usb_get_intfdata(intf);
+	struct wdm_device *desc = wdm_find_device(intf);
 	int rv = 0;
 
 	dev_dbg(&desc->intf->dev, "wdm%d_suspend\n", intf->minor);
@@ -853,7 +951,7 @@ static int recover_from_urb_loss(struct wdm_device *desc)
 #ifdef CONFIG_PM
 static int wdm_resume(struct usb_interface *intf)
 {
-	struct wdm_device *desc = usb_get_intfdata(intf);
+	struct wdm_device *desc = wdm_find_device(intf);
 	int rv;
 
 	dev_dbg(&desc->intf->dev, "wdm%d_resume\n", intf->minor);
@@ -867,11 +965,7 @@ static int wdm_resume(struct usb_interface *intf)
 
 static int wdm_pre_reset(struct usb_interface *intf)
 {
-	struct wdm_device *desc = usb_get_intfdata(intf);
-
-	mutex_lock(&desc->rlock);
-	mutex_lock(&desc->wlock);
-	kill_urbs(desc);
+	struct wdm_device *desc = wdm_find_device(intf);
 
 	/*
 	 * we notify everybody using poll of
@@ -880,17 +974,25 @@ static int wdm_pre_reset(struct usb_interface *intf)
 	 * message from the device is lost
 	 */
 	spin_lock_irq(&desc->iuspin);
+	set_bit(WDM_RESETTING, &desc->flags);	/* inform read/write */
+	set_bit(WDM_READ, &desc->flags);	/* unblock read */
+	clear_bit(WDM_IN_USE, &desc->flags);	/* unblock write */
 	desc->rerr = -EINTR;
 	spin_unlock_irq(&desc->iuspin);
 	wake_up_all(&desc->wait);
+	mutex_lock(&desc->rlock);
+	mutex_lock(&desc->wlock);
+	kill_urbs(desc);
+	cancel_work_sync(&desc->rxwork);
 	return 0;
 }
 
 static int wdm_post_reset(struct usb_interface *intf)
 {
-	struct wdm_device *desc = usb_get_intfdata(intf);
+	struct wdm_device *desc = wdm_find_device(intf);
 	int rv;
 
+	clear_bit(WDM_RESETTING, &desc->flags);
 	rv = recover_from_urb_loss(desc);
 	mutex_unlock(&desc->wlock);
 	mutex_unlock(&desc->rlock);

drivers/usb/core/driver.c

@@ -958,13 +958,8 @@ void usb_rebind_intf(struct usb_interface *intf)
 	int rc;
 
 	/* Delayed unbind of an existing driver */
-	if (intf->dev.driver) {
-		struct usb_driver *driver =
-				to_usb_driver(intf->dev.driver);
-
-		dev_dbg(&intf->dev, "forced unbind\n");
-		usb_driver_release_interface(driver, intf);
-	}
+	if (intf->dev.driver)
+		usb_forced_unbind_intf(intf);
 
 	/* Try to rebind the interface */
 	if (!intf->dev.power.is_prepared) {
@@ -977,15 +972,13 @@ void usb_rebind_intf(struct usb_interface *intf)
 
 #ifdef CONFIG_PM
 
-#define DO_UNBIND	0
-#define DO_REBIND	1
-
-/* Unbind drivers for @udev's interfaces that don't support suspend/resume,
- * or rebind interfaces that have been unbound, according to @action.
+/* Unbind drivers for @udev's interfaces that don't support suspend/resume
+ * There is no check for reset_resume here because it can be determined
+ * only during resume whether reset_resume is needed.
  *
  * The caller must hold @udev's device lock.
  */
-static void do_unbind_rebind(struct usb_device *udev, int action)
+static void unbind_no_pm_drivers_interfaces(struct usb_device *udev)
 {
 	struct usb_host_config	*config;
 	int			i;
@@ -996,23 +989,53 @@ static void do_unbind_rebind(struct usb_device *udev, int action)
 	if (config) {
 		for (i = 0; i < config->desc.bNumInterfaces; ++i) {
 			intf = config->interface[i];
-			switch (action) {
-			case DO_UNBIND:
-				if (intf->dev.driver) {
-					drv = to_usb_driver(intf->dev.driver);
-					if (!drv->suspend || !drv->resume)
-						usb_forced_unbind_intf(intf);
-				}
-				break;
-			case DO_REBIND:
-				if (intf->needs_binding)
-					usb_rebind_intf(intf);
-				break;
+
+			if (intf->dev.driver) {
+				drv = to_usb_driver(intf->dev.driver);
+				if (!drv->suspend || !drv->resume)
+					usb_forced_unbind_intf(intf);
 			}
 		}
 	}
 }
 
+/* Unbind drivers for @udev's interfaces that failed to support reset-resume.
+ * These interfaces have the needs_binding flag set by usb_resume_interface().
+ *
+ * The caller must hold @udev's device lock.
+ */
+static void unbind_no_reset_resume_drivers_interfaces(struct usb_device *udev)
+{
+	struct usb_host_config	*config;
+	int			i;
+	struct usb_interface	*intf;
+
+	config = udev->actconfig;
+	if (config) {
+		for (i = 0; i < config->desc.bNumInterfaces; ++i) {
+			intf = config->interface[i];
+			if (intf->dev.driver && intf->needs_binding)
+				usb_forced_unbind_intf(intf);
+		}
+	}
+}
+
+static void do_rebind_interfaces(struct usb_device *udev)
+{
+	struct usb_host_config	*config;
+	int			i;
+	struct usb_interface	*intf;
+
+	config = udev->actconfig;
+	if (config) {
+		for (i = 0; i < config->desc.bNumInterfaces; ++i) {
+			intf = config->interface[i];
+			if (intf->needs_binding)
+				usb_rebind_intf(intf);
+		}
+	}
+}
+
 static int usb_suspend_device(struct usb_device *udev, pm_message_t msg)
 {
 	struct usb_device_driver	*udriver;
@@ -1302,35 +1325,48 @@ int usb_suspend(struct device *dev, pm_message_t msg)
 {
 	struct usb_device	*udev = to_usb_device(dev);
 
-	do_unbind_rebind(udev, DO_UNBIND);
+	unbind_no_pm_drivers_interfaces(udev);
+
+	/* From now on we are sure all drivers support suspend/resume
+	 * but not necessarily reset_resume()
+	 * so we may still need to unbind and rebind upon resume
+	 */
 	choose_wakeup(udev, msg);
 	return usb_suspend_both(udev, msg);
 }
 
+/* The device lock is held by the PM core */
+int usb_resume_complete(struct device *dev)
+{
+	struct usb_device *udev = to_usb_device(dev);
+
+	/* For PM complete calls, all we do is rebind interfaces
+	 * whose needs_binding flag is set
+	 */
+	if (udev->state != USB_STATE_NOTATTACHED)
+		do_rebind_interfaces(udev);
+	return 0;
+}
+
 /* The device lock is held by the PM core */
 int usb_resume(struct device *dev, pm_message_t msg)
 {
 	struct usb_device	*udev = to_usb_device(dev);
 	int			status;
 
-	/* For PM complete calls, all we do is rebind interfaces */
-	if (msg.event == PM_EVENT_ON) {
-		if (udev->state != USB_STATE_NOTATTACHED)
-			do_unbind_rebind(udev, DO_REBIND);
-		status = 0;
-
-	/* For all other calls, take the device back to full power and
+	/* For all calls, take the device back to full power and
 	 * tell the PM core in case it was autosuspended previously.
-	 * Unbind the interfaces that will need rebinding later.
+	 * Unbind the interfaces that will need rebinding later,
+	 * because they fail to support reset_resume.
+	 * (This can't be done in usb_resume_interface()
+	 * above because it doesn't own the right set of locks.)
 	 */
-	} else {
-		status = usb_resume_both(udev, msg);
-		if (status == 0) {
-			pm_runtime_disable(dev);
-			pm_runtime_set_active(dev);
-			pm_runtime_enable(dev);
-			do_unbind_rebind(udev, DO_REBIND);
-		}
+	status = usb_resume_both(udev, msg);
+	if (status == 0) {
+		pm_runtime_disable(dev);
+		pm_runtime_set_active(dev);
+		pm_runtime_enable(dev);
+		unbind_no_reset_resume_drivers_interfaces(udev);
 	}
 
 	/* Avoid PM error messages for devices disconnected while suspended

drivers/usb/core/hcd-pci.c

@@ -380,6 +380,7 @@ static int check_root_hub_suspended(struct device *dev)
 	return 0;
 }
 
+#if defined(CONFIG_PM_SLEEP) || defined(CONFIG_PM_RUNTIME)
 static int suspend_common(struct device *dev, bool do_wakeup)
 {
 	struct pci_dev		*pci_dev = to_pci_dev(dev);
@@ -471,6 +472,7 @@ static int resume_common(struct device *dev, int event)
 	}
 	return retval;
 }
+#endif	/* SLEEP || RUNTIME */
 
 #ifdef	CONFIG_PM_SLEEP
 

drivers/usb/core/hcd.c

@@ -2352,7 +2352,7 @@ static int usb_hcd_request_irqs(struct usb_hcd *hcd,
 					"io mem" : "io base",
 					(unsigned long long)hcd->rsrc_start);
 	} else {
-		hcd->irq = -1;
+		hcd->irq = 0;
 		if (hcd->rsrc_start)
 			dev_info(hcd->self.controller, "%s 0x%08llx\n",
 					(hcd->driver->flags & HCD_MEMORY) ?
@@ -2508,7 +2508,7 @@ err_register_root_hub:
 	clear_bit(HCD_FLAG_POLL_RH, &hcd->flags);
 	del_timer_sync(&hcd->rh_timer);
 err_hcd_driver_start:
-	if (usb_hcd_is_primary_hcd(hcd) && hcd->irq >= 0)
+	if (usb_hcd_is_primary_hcd(hcd) && hcd->irq > 0)
 		free_irq(irqnum, hcd);
 err_request_irq:
 err_hcd_driver_setup:
@@ -2573,7 +2573,7 @@ void usb_remove_hcd(struct usb_hcd *hcd)
 	del_timer_sync(&hcd->rh_timer);
 
 	if (usb_hcd_is_primary_hcd(hcd)) {
-		if (hcd->irq >= 0)
+		if (hcd->irq > 0)
 			free_irq(hcd->irq, hcd);
 	}
 

drivers/usb/core/hub.c

@@ -62,6 +62,8 @@ struct usb_hub {
 							resumed */
 	unsigned long		removed_bits[1]; /* ports with a "removed"
 							device present */
+	unsigned long		wakeup_bits[1];	/* ports that have signaled
+							remote wakeup */
 #if USB_MAXCHILDREN > 31 /* 8*sizeof(unsigned long) - 1 */
 #error event_bits[] is too short!
 #endif
@@ -411,6 +413,29 @@ void usb_kick_khubd(struct usb_device *hdev)
 		kick_khubd(hub);
 }
 
+/*
+ * Let the USB core know that a USB 3.0 device has sent a Function Wake Device
+ * Notification, which indicates it had initiated remote wakeup.
+ *
+ * USB 3.0 hubs do not report the port link state change from U3 to U0 when the
+ * device initiates resume, so the USB core will not receive notice of the
+ * resume through the normal hub interrupt URB.
+ */
+void usb_wakeup_notification(struct usb_device *hdev,
+		unsigned int portnum)
+{
+	struct usb_hub *hub;
+
+	if (!hdev)
+		return;
+
+	hub = hdev_to_hub(hdev);
+	if (hub) {
+		set_bit(portnum, hub->wakeup_bits);
+		kick_khubd(hub);
+	}
+}
+EXPORT_SYMBOL_GPL(usb_wakeup_notification);
 
 /* completion function, fires on port status changes and various faults */
 static void hub_irq(struct urb *urb)
@@ -823,12 +848,6 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
 			clear_port_feature(hub->hdev, port1,
 					USB_PORT_FEAT_C_ENABLE);
 		}
-		if (portchange & USB_PORT_STAT_C_LINK_STATE) {
-			need_debounce_delay = true;
-			clear_port_feature(hub->hdev, port1,
-					USB_PORT_FEAT_C_PORT_LINK_STATE);
-		}
-
 		if ((portchange & USB_PORT_STAT_C_BH_RESET) &&
 				hub_is_superspeed(hub->hdev)) {
 			need_debounce_delay = true;
@@ -850,12 +869,19 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
 				set_bit(port1, hub->change_bits);
 
 		} else if (portstatus & USB_PORT_STAT_ENABLE) {
+			bool port_resumed = (portstatus &
+					USB_PORT_STAT_LINK_STATE) ==
+				USB_SS_PORT_LS_U0;
 			/* The power session apparently survived the resume.
 			 * If there was an overcurrent or suspend change
 			 * (i.e., remote wakeup request), have khubd
-			 * take care of it.
+			 * take care of it.  Look at the port link state
+			 * for USB 3.0 hubs, since they don't have a suspend
+			 * change bit, and they don't set the port link change
+			 * bit on device-initiated resume.
 			 */
-			if (portchange)
+			if (portchange || (hub_is_superspeed(hub->hdev) &&
+						port_resumed))
 				set_bit(port1, hub->change_bits);
 
 		} else if (udev->persist_enabled) {
@@ -1293,14 +1319,8 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	desc = intf->cur_altsetting;
 	hdev = interface_to_usbdev(intf);
 
-	/* Hubs have proper suspend/resume support.  USB 3.0 device suspend is
-	 * different from USB 2.0/1.1 device suspend, and unfortunately we
-	 * don't support it yet.  So leave autosuspend disabled for USB 3.0
-	 * external hubs for now.  Enable autosuspend for USB 3.0 roothubs,
-	 * since that isn't a "real" hub.
-	 */
-	if (!hub_is_superspeed(hdev) || !hdev->parent)
-		usb_enable_autosuspend(hdev);
+	/* Hubs have proper suspend/resume support. */
+	usb_enable_autosuspend(hdev);
 
 	if (hdev->level == MAX_TOPO_LEVEL) {
 		dev_err(&intf->dev,
@@ -1842,6 +1862,37 @@ fail:
 	return err;
 }
 
+static void set_usb_port_removable(struct usb_device *udev)
+{
+	struct usb_device *hdev = udev->parent;
+	struct usb_hub *hub;
+	u8 port = udev->portnum;
+	u16 wHubCharacteristics;
+	bool removable = true;
+
+	if (!hdev)
+		return;
+
+	hub = hdev_to_hub(udev->parent);
+
+	wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics);
+
+	if (!(wHubCharacteristics & HUB_CHAR_COMPOUND))
+		return;
+
+	if (hub_is_superspeed(hdev)) {
+		if (hub->descriptor->u.ss.DeviceRemovable & (1 << port))
+			removable = false;
+	} else {
+		if (hub->descriptor->u.hs.DeviceRemovable[port / 8] & (1 << (port % 8)))
+			removable = false;
+	}
+
+	if (removable)
+		udev->removable = USB_DEVICE_REMOVABLE;
+	else
+		udev->removable = USB_DEVICE_FIXED;
+}
 
 /**
  * usb_new_device - perform initial device setup (usbcore-internal)
@@ -1900,6 +1951,15 @@ int usb_new_device(struct usb_device *udev)
 	announce_device(udev);
 
 	device_enable_async_suspend(&udev->dev);
+
+	/*
+	 * check whether the hub marks this port as non-removable. Do it
+	 * now so that platform-specific data can override it in
+	 * device_add()
+	 */
+	if (udev->parent)
+		set_usb_port_removable(udev);
+
 	/* Register the device.  The device driver is responsible
 	 * for configuring the device and invoking the add-device
 	 * notifier chain (used by usbfs and possibly others).
@@ -2385,11 +2445,27 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
 	 * we don't explicitly enable it here.
 	 */
 	if (udev->do_remote_wakeup) {
-		status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
-				USB_REQ_SET_FEATURE, USB_RECIP_DEVICE,
-				USB_DEVICE_REMOTE_WAKEUP, 0,
-				NULL, 0,
-				USB_CTRL_SET_TIMEOUT);
+		if (!hub_is_superspeed(hub->hdev)) {
+			status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+					USB_REQ_SET_FEATURE, USB_RECIP_DEVICE,
+					USB_DEVICE_REMOTE_WAKEUP, 0,
+					NULL, 0,
+					USB_CTRL_SET_TIMEOUT);
+		} else {
+			/* Assume there's only one function on the USB 3.0
+			 * device and enable remote wake for the first
+			 * interface. FIXME if the interface association
+			 * descriptor shows there's more than one function.
+			 */
+			status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+					USB_REQ_SET_FEATURE,
+					USB_RECIP_INTERFACE,
+					USB_INTRF_FUNC_SUSPEND,
+					USB_INTRF_FUNC_SUSPEND_RW |
+					USB_INTRF_FUNC_SUSPEND_LP,
+					NULL, 0,
+					USB_CTRL_SET_TIMEOUT);
+		}
 		if (status) {
 			dev_dbg(&udev->dev, "won't remote wakeup, status %d\n",
 					status);
@@ -2679,6 +2755,7 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg)
 	struct usb_hub		*hub = usb_get_intfdata (intf);
 	struct usb_device	*hdev = hub->hdev;
 	unsigned		port1;
+	int			status;
 
 	/* Warn if children aren't already suspended */
 	for (port1 = 1; port1 <= hdev->maxchild; port1++) {
@@ -2691,6 +2768,17 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg)
 				return -EBUSY;
 		}
 	}
+	if (hub_is_superspeed(hdev) && hdev->do_remote_wakeup) {
+		/* Enable hub to send remote wakeup for all ports. */
+		for (port1 = 1; port1 <= hdev->maxchild; port1++) {
+			status = set_port_feature(hdev,
+					port1 |
+					USB_PORT_FEAT_REMOTE_WAKE_CONNECT |
+					USB_PORT_FEAT_REMOTE_WAKE_DISCONNECT |
+					USB_PORT_FEAT_REMOTE_WAKE_OVER_CURRENT,
+					USB_PORT_FEAT_REMOTE_WAKE_MASK);
+		}
+	}
 
 	dev_dbg(&intf->dev, "%s\n", __func__);
 
@@ -3424,6 +3512,46 @@ done:
 		hcd->driver->relinquish_port(hcd, port1);
 }
 
+/* Returns 1 if there was a remote wakeup and a connect status change. */
+static int hub_handle_remote_wakeup(struct usb_hub *hub, unsigned int port,
+		u16 portstatus, u16 portchange)
+{
+	struct usb_device *hdev;
+	struct usb_device *udev;
+	int connect_change = 0;
+	int ret;
+
+	hdev = hub->hdev;
+	udev = hdev->children[port-1];
+	if (!hub_is_superspeed(hdev)) {
+		if (!(portchange & USB_PORT_STAT_C_SUSPEND))
+			return 0;
+		clear_port_feature(hdev, port, USB_PORT_FEAT_C_SUSPEND);
+	} else {
+		if (!udev || udev->state != USB_STATE_SUSPENDED ||
+				 (portstatus & USB_PORT_STAT_LINK_STATE) !=
+				 USB_SS_PORT_LS_U0)
+			return 0;
+	}
+
+	if (udev) {
+		/* TRSMRCY = 10 msec */
+		msleep(10);
+
+		usb_lock_device(udev);
+		ret = usb_remote_wakeup(udev);
+		usb_unlock_device(udev);
+		if (ret < 0)
+			connect_change = 1;
+	} else {
+		ret = -ENODEV;
+		hub_port_disable(hub, port, 1);
+	}
+	dev_dbg(hub->intfdev, "resume on port %d, status %d\n",
+			port, ret);
+	return connect_change;
+}
+
 static void hub_events(void)
 {
 	struct list_head *tmp;
@@ -3436,7 +3564,7 @@ static void hub_events(void)
 	u16 portstatus;
 	u16 portchange;
 	int i, ret;
-	int connect_change;
+	int connect_change, wakeup_change;
 
 	/*
 	 *  We restart the list every time to avoid a deadlock with
@@ -3515,8 +3643,9 @@ static void hub_events(void)
 			if (test_bit(i, hub->busy_bits))
 				continue;
 			connect_change = test_bit(i, hub->change_bits);
+			wakeup_change = test_and_clear_bit(i, hub->wakeup_bits);
 			if (!test_and_clear_bit(i, hub->event_bits) &&
-					!connect_change)
+					!connect_change && !wakeup_change)
 				continue;
 
 			ret = hub_port_status(hub, i,
@@ -3557,31 +3686,10 @@ static void hub_events(void)
 				}
 			}
 
-			if (portchange & USB_PORT_STAT_C_SUSPEND) {
-				struct usb_device *udev;
+			if (hub_handle_remote_wakeup(hub, i,
+						portstatus, portchange))
+				connect_change = 1;
 
-				clear_port_feature(hdev, i,
-					USB_PORT_FEAT_C_SUSPEND);
-				udev = hdev->children[i-1];
-				if (udev) {
-					/* TRSMRCY = 10 msec */
-					msleep(10);
-
-					usb_lock_device(udev);
-					ret = usb_remote_wakeup(hdev->
-							children[i-1]);
-					usb_unlock_device(udev);
-					if (ret < 0)
-						connect_change = 1;
-				} else {
-					ret = -ENODEV;
-					hub_port_disable(hub, i, 1);
-				}
-				dev_dbg (hub_dev,
-					"resume on port %d, status %d\n",
-					i, ret);
-			}
-			
 			if (portchange & USB_PORT_STAT_C_OVERCURRENT) {
 				u16 status = 0;
 				u16 unused;

drivers/usb/core/sysfs.c

@@ -230,6 +230,28 @@ show_urbnum(struct device *dev, struct device_attribute *attr, char *buf)
 }
 static DEVICE_ATTR(urbnum, S_IRUGO, show_urbnum, NULL);
 
+static ssize_t
+show_removable(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct usb_device *udev;
+	char *state;
+
+	udev = to_usb_device(dev);
+
+	switch (udev->removable) {
+	case USB_DEVICE_REMOVABLE:
+		state = "removable";
+		break;
+	case USB_DEVICE_FIXED:
+		state = "fixed";
+		break;
+	default:
+		state = "unknown";
+	}
+
+	return sprintf(buf, "%s\n", state);
+}
+static DEVICE_ATTR(removable, S_IRUGO, show_removable, NULL);
 
 #ifdef	CONFIG_PM
 
@@ -626,6 +648,7 @@ static struct attribute *dev_attrs[] = {
 	&dev_attr_avoid_reset_quirk.attr,
 	&dev_attr_authorized.attr,
 	&dev_attr_remove.attr,
+	&dev_attr_removable.attr,
 	NULL,
 };
 static struct attribute_group dev_attr_grp = {

drivers/usb/core/urb.c

@@ -403,20 +403,17 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
 	 * cause problems in HCDs if they get it wrong.
 	 */
 	{
-	unsigned int	orig_flags = urb->transfer_flags;
 	unsigned int	allowed;
 	static int pipetypes[4] = {
 		PIPE_CONTROL, PIPE_ISOCHRONOUS, PIPE_BULK, PIPE_INTERRUPT
 	};
 
 	/* Check that the pipe's type matches the endpoint's type */
-	if (usb_pipetype(urb->pipe) != pipetypes[xfertype]) {
-		dev_err(&dev->dev, "BOGUS urb xfer, pipe %x != type %x\n",
+	if (usb_pipetype(urb->pipe) != pipetypes[xfertype])
+		dev_WARN(&dev->dev, "BOGUS urb xfer, pipe %x != type %x\n",
 			usb_pipetype(urb->pipe), pipetypes[xfertype]);
-		return -EPIPE;		/* The most suitable error code :-) */
-	}
 
-	/* enforce simple/standard policy */
+	/* Check against a simple/standard policy */
 	allowed = (URB_NO_TRANSFER_DMA_MAP | URB_NO_INTERRUPT | URB_DIR_MASK |
 			URB_FREE_BUFFER);
 	switch (xfertype) {
@@ -435,14 +432,12 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
 		allowed |= URB_ISO_ASAP;
 		break;
 	}
-	urb->transfer_flags &= allowed;
+	allowed &= urb->transfer_flags;
 
-	/* fail if submitter gave bogus flags */
-	if (urb->transfer_flags != orig_flags) {
-		dev_err(&dev->dev, "BOGUS urb flags, %x --> %x\n",
-			orig_flags, urb->transfer_flags);
-		return -EINVAL;
-	}
+	/* warn if submitter gave bogus flags */
+	if (allowed != urb->transfer_flags)
+		dev_WARN(&dev->dev, "BOGUS urb flags, %x --> %x\n",
+			urb->transfer_flags, allowed);
 	}
 #endif
 	/*
@@ -532,10 +527,13 @@ EXPORT_SYMBOL_GPL(usb_submit_urb);
  * a driver's I/O routines to insure that all URB-related activity has
  * completed before it returns.
  *
- * This request is always asynchronous.  Success is indicated by
- * returning -EINPROGRESS, at which time the URB will probably not yet
- * have been given back to the device driver.  When it is eventually
- * called, the completion function will see @urb->status == -ECONNRESET.
+ * This request is asynchronous, however the HCD might call the ->complete()
+ * callback during unlink. Therefore when drivers call usb_unlink_urb(), they
+ * must not hold any locks that may be taken by the completion function.
+ * Success is indicated by returning -EINPROGRESS, at which time the URB will
+ * probably not yet have been given back to the device driver. When it is
+ * eventually called, the completion function will see @urb->status ==
+ * -ECONNRESET.
  * Failure is indicated by usb_unlink_urb() returning any other value.
  * Unlinking will fail when @urb is not currently "linked" (i.e., it was
  * never submitted, or it was unlinked before, or the hardware is already

drivers/usb/core/usb.c

@@ -274,7 +274,7 @@ static int usb_dev_prepare(struct device *dev)
 static void usb_dev_complete(struct device *dev)
 {
 	/* Currently used only for rebinding interfaces */
-	usb_resume(dev, PMSG_ON);	/* FIXME: change to PMSG_COMPLETE */
+	usb_resume_complete(dev);
 }
 
 static int usb_dev_suspend(struct device *dev)

drivers/usb/core/usb.h

@@ -56,6 +56,7 @@ extern void usb_major_cleanup(void);
 
 extern int usb_suspend(struct device *dev, pm_message_t msg);
 extern int usb_resume(struct device *dev, pm_message_t msg);
+extern int usb_resume_complete(struct device *dev);
 
 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);

drivers/usb/dwc3/Makefile

@@ -28,6 +28,19 @@ endif
 
 obj-$(CONFIG_USB_DWC3)		+= dwc3-omap.o
 
+##
+# REVISIT Samsung Exynos platform needs the clk API which isn't
+# defined on all architectures. If we allow dwc3-exynos.c compile
+# always we will fail the linking phase on those architectures
+# which don't provide clk api implementation and that's unnaceptable.
+#
+# When Samsung's platform start supporting pm_runtime, this check
+# for HAVE_CLK should be removed.
+##
+ifneq ($(CONFIG_HAVE_CLK),)
+	obj-$(CONFIG_USB_DWC3)		+= dwc3-exynos.o
+endif
+
 ifneq ($(CONFIG_PCI),)
 	obj-$(CONFIG_USB_DWC3)		+= dwc3-pci.o
 endif

drivers/usb/dwc3/core.c

@@ -48,10 +48,10 @@
 #include <linux/list.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
+#include <linux/of.h>
 
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
-#include <linux/module.h>
 
 #include "core.h"
 #include "gadget.h"
@@ -86,7 +86,7 @@ again:
 		id = -ENOMEM;
 	}
 
-	return 0;
+	return id;
 }
 EXPORT_SYMBOL_GPL(dwc3_get_device_id);
 
@@ -167,11 +167,11 @@ static void dwc3_free_one_event_buffer(struct dwc3 *dwc,
 }
 
 /**
- * dwc3_alloc_one_event_buffer - Allocated one event buffer structure
+ * dwc3_alloc_one_event_buffer - Allocates one event buffer structure
  * @dwc: Pointer to our controller context structure
  * @length: size of the event buffer
  *
- * Returns a pointer to the allocated event buffer structure on succes
+ * Returns a pointer to the allocated event buffer structure on success
  * otherwise ERR_PTR(errno).
  */
 static struct dwc3_event_buffer *__devinit
@@ -215,10 +215,10 @@ static void dwc3_free_event_buffers(struct dwc3 *dwc)
 
 /**
  * dwc3_alloc_event_buffers - Allocates @num event buffers of size @length
- * @dwc: Pointer to out controller context structure
+ * @dwc: pointer to our controller context structure
  * @length: size of event buffer
  *
- * Returns 0 on success otherwise negative errno. In error the case, dwc
+ * Returns 0 on success otherwise negative errno. In the error case, dwc
  * may contain some buffers allocated but not all which were requested.
  */
 static int __devinit dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length)
@@ -251,7 +251,7 @@ static int __devinit dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length)
 
 /**
  * dwc3_event_buffers_setup - setup our allocated event buffers
- * @dwc: Pointer to out controller context structure
+ * @dwc: pointer to our controller context structure
  *
  * Returns 0 on success otherwise negative errno.
  */
@@ -350,7 +350,7 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc)
 	dwc3_cache_hwparams(dwc);
 
 	reg = dwc3_readl(dwc->regs, DWC3_GCTL);
-	reg &= ~DWC3_GCTL_SCALEDOWN(3);
+	reg &= ~DWC3_GCTL_SCALEDOWN_MASK;
 	reg &= ~DWC3_GCTL_DISSCRAMBLE;
 
 	switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) {
@@ -363,9 +363,9 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc)
 
 	/*
 	 * WORKAROUND: DWC3 revisions <1.90a have a bug
-	 * when The device fails to connect at SuperSpeed
+	 * where the device can fail to connect at SuperSpeed
 	 * and falls back to high-speed mode which causes
-	 * the device to enter in a Connect/Disconnect loop
+	 * the device to enter a Connect/Disconnect loop
 	 */
 	if (dwc->revision < DWC3_REVISION_190A)
 		reg |= DWC3_GCTL_U2RSTECN;
@@ -404,8 +404,10 @@ static void dwc3_core_exit(struct dwc3 *dwc)
 
 static int __devinit dwc3_probe(struct platform_device *pdev)
 {
+	struct device_node	*node = pdev->dev.of_node;
 	struct resource		*res;
 	struct dwc3		*dwc;
+	struct device		*dev = &pdev->dev;
 
 	int			ret = -ENOMEM;
 	int			irq;
@@ -415,39 +417,39 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
 
 	u8			mode;
 
-	mem = kzalloc(sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
+	mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
 	if (!mem) {
-		dev_err(&pdev->dev, "not enough memory\n");
-		goto err0;
+		dev_err(dev, "not enough memory\n");
+		return -ENOMEM;
 	}
 	dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1);
 	dwc->mem = mem;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
-		dev_err(&pdev->dev, "missing resource\n");
-		goto err1;
+		dev_err(dev, "missing resource\n");
+		return -ENODEV;
 	}
 
 	dwc->res = res;
 
-	res = request_mem_region(res->start, resource_size(res),
-			dev_name(&pdev->dev));
+	res = devm_request_mem_region(dev, res->start, resource_size(res),
+			dev_name(dev));
 	if (!res) {
-		dev_err(&pdev->dev, "can't request mem region\n");
-		goto err1;
+		dev_err(dev, "can't request mem region\n");
+		return -ENOMEM;
 	}
 
-	regs = ioremap(res->start, resource_size(res));
+	regs = devm_ioremap(dev, res->start, resource_size(res));
 	if (!regs) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		goto err2;
+		dev_err(dev, "ioremap failed\n");
+		return -ENOMEM;
 	}
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "missing IRQ\n");
-		goto err3;
+		dev_err(dev, "missing IRQ\n");
+		return -ENODEV;
 	}
 
 	spin_lock_init(&dwc->lock);
@@ -455,7 +457,7 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
 
 	dwc->regs	= regs;
 	dwc->regs_size	= resource_size(res);
-	dwc->dev	= &pdev->dev;
+	dwc->dev	= dev;
 	dwc->irq	= irq;
 
 	if (!strncmp("super", maximum_speed, 5))
@@ -469,14 +471,17 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
 	else
 		dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
 
-	pm_runtime_enable(&pdev->dev);
-	pm_runtime_get_sync(&pdev->dev);
-	pm_runtime_forbid(&pdev->dev);
+	if (of_get_property(node, "tx-fifo-resize", NULL))
+		dwc->needs_fifo_resize = true;
+
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
+	pm_runtime_forbid(dev);
 
 	ret = dwc3_core_init(dwc);
 	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize core\n");
-		goto err3;
+		dev_err(dev, "failed to initialize core\n");
+		return ret;
 	}
 
 	mode = DWC3_MODE(dwc->hwparams.hwparams0);
@@ -486,49 +491,49 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
 		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
 		ret = dwc3_gadget_init(dwc);
 		if (ret) {
-			dev_err(&pdev->dev, "failed to initialize gadget\n");
-			goto err4;
+			dev_err(dev, "failed to initialize gadget\n");
+			goto err1;
 		}
 		break;
 	case DWC3_MODE_HOST:
 		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST);
 		ret = dwc3_host_init(dwc);
 		if (ret) {
-			dev_err(&pdev->dev, "failed to initialize host\n");
-			goto err4;
+			dev_err(dev, "failed to initialize host\n");
+			goto err1;
 		}
 		break;
 	case DWC3_MODE_DRD:
 		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG);
 		ret = dwc3_host_init(dwc);
 		if (ret) {
-			dev_err(&pdev->dev, "failed to initialize host\n");
-			goto err4;
+			dev_err(dev, "failed to initialize host\n");
+			goto err1;
 		}
 
 		ret = dwc3_gadget_init(dwc);
 		if (ret) {
-			dev_err(&pdev->dev, "failed to initialize gadget\n");
-			goto err4;
+			dev_err(dev, "failed to initialize gadget\n");
+			goto err1;
 		}
 		break;
 	default:
-		dev_err(&pdev->dev, "Unsupported mode of operation %d\n", mode);
-		goto err4;
+		dev_err(dev, "Unsupported mode of operation %d\n", mode);
+		goto err1;
 	}
 	dwc->mode = mode;
 
 	ret = dwc3_debugfs_init(dwc);
 	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize debugfs\n");
-		goto err5;
+		dev_err(dev, "failed to initialize debugfs\n");
+		goto err2;
 	}
 
-	pm_runtime_allow(&pdev->dev);
+	pm_runtime_allow(dev);
 
 	return 0;
 
-err5:
+err2:
 	switch (mode) {
 	case DWC3_MODE_DEVICE:
 		dwc3_gadget_exit(dwc);
@@ -545,19 +550,9 @@ err5:
 		break;
 	}
 
-err4:
-	dwc3_core_exit(dwc);
-
-err3:
-	iounmap(regs);
-
-err2:
-	release_mem_region(res->start, resource_size(res));
-
 err1:
-	kfree(dwc->mem);
+	dwc3_core_exit(dwc);
 
-err0:
 	return ret;
 }
 
@@ -590,9 +585,6 @@ static int __devexit dwc3_remove(struct platform_device *pdev)
 	}
 
 	dwc3_core_exit(dwc);
-	release_mem_region(res->start, resource_size(res));
-	iounmap(dwc->regs);
-	kfree(dwc->mem);
 
 	return 0;
 }
@@ -605,19 +597,9 @@ static struct platform_driver dwc3_driver = {
 	},
 };
 
+module_platform_driver(dwc3_driver);
+
 MODULE_ALIAS("platform:dwc3");
 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver");
-
-static int __devinit dwc3_init(void)
-{
-	return platform_driver_register(&dwc3_driver);
-}
-module_init(dwc3_init);
-
-static void __exit dwc3_exit(void)
-{
-	platform_driver_unregister(&dwc3_driver);
-}
-module_exit(dwc3_exit);

drivers/usb/dwc3/core.h

@@ -145,22 +145,23 @@
 /* Bit fields */
 
 /* Global Configuration Register */
-#define DWC3_GCTL_PWRDNSCALE(n)	(n << 19)
+#define DWC3_GCTL_PWRDNSCALE(n)	((n) << 19)
 #define DWC3_GCTL_U2RSTECN	(1 << 16)
-#define DWC3_GCTL_RAMCLKSEL(x)	((x & DWC3_GCTL_CLK_MASK) << 6)
+#define DWC3_GCTL_RAMCLKSEL(x)	(((x) & DWC3_GCTL_CLK_MASK) << 6)
 #define DWC3_GCTL_CLK_BUS	(0)
 #define DWC3_GCTL_CLK_PIPE	(1)
 #define DWC3_GCTL_CLK_PIPEHALF	(2)
 #define DWC3_GCTL_CLK_MASK	(3)
 
 #define DWC3_GCTL_PRTCAP(n)	(((n) & (3 << 12)) >> 12)
-#define DWC3_GCTL_PRTCAPDIR(n)	(n << 12)
+#define DWC3_GCTL_PRTCAPDIR(n)	((n) << 12)
 #define DWC3_GCTL_PRTCAP_HOST	1
 #define DWC3_GCTL_PRTCAP_DEVICE	2
 #define DWC3_GCTL_PRTCAP_OTG	3
 
 #define DWC3_GCTL_CORESOFTRESET	(1 << 11)
-#define DWC3_GCTL_SCALEDOWN(n)	(n << 4)
+#define DWC3_GCTL_SCALEDOWN(n)	((n) << 4)
+#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3)
 #define DWC3_GCTL_DISSCRAMBLE	(1 << 3)
 #define DWC3_GCTL_DSBLCLKGTNG	(1 << 0)
 
@@ -172,8 +173,12 @@
 #define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
 #define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
 
+/* Global TX Fifo Size Register */
+#define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff)
+#define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000)
+
 /* Global HWPARAMS1 Register */
-#define DWC3_GHWPARAMS1_EN_PWROPT(n)	((n & (3 << 24)) >> 24)
+#define DWC3_GHWPARAMS1_EN_PWROPT(n)	(((n) & (3 << 24)) >> 24)
 #define DWC3_GHWPARAMS1_EN_PWROPT_NO	0
 #define DWC3_GHWPARAMS1_EN_PWROPT_CLK	1
 
@@ -198,6 +203,15 @@
 
 #define DWC3_DCTL_APPL1RES	(1 << 23)
 
+#define DWC3_DCTL_TRGTULST_MASK	(0x0f << 17)
+#define DWC3_DCTL_TRGTULST(n)	((n) << 17)
+
+#define DWC3_DCTL_TRGTULST_U2	(DWC3_DCTL_TRGTULST(2))
+#define DWC3_DCTL_TRGTULST_U3	(DWC3_DCTL_TRGTULST(3))
+#define DWC3_DCTL_TRGTULST_SS_DIS (DWC3_DCTL_TRGTULST(4))
+#define DWC3_DCTL_TRGTULST_RX_DET (DWC3_DCTL_TRGTULST(5))
+#define DWC3_DCTL_TRGTULST_SS_INACT (DWC3_DCTL_TRGTULST(6))
+
 #define DWC3_DCTL_INITU2ENA	(1 << 12)
 #define DWC3_DCTL_ACCEPTU2ENA	(1 << 11)
 #define DWC3_DCTL_INITU1ENA	(1 << 10)
@@ -260,10 +274,10 @@
 
 /* Device Endpoint Command Register */
 #define DWC3_DEPCMD_PARAM_SHIFT		16
-#define DWC3_DEPCMD_PARAM(x)		(x << DWC3_DEPCMD_PARAM_SHIFT)
-#define DWC3_DEPCMD_GET_RSC_IDX(x)	((x >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f)
+#define DWC3_DEPCMD_PARAM(x)		((x) << DWC3_DEPCMD_PARAM_SHIFT)
+#define DWC3_DEPCMD_GET_RSC_IDX(x)     (((x) >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f)
 #define DWC3_DEPCMD_STATUS_MASK		(0x0f << 12)
-#define DWC3_DEPCMD_STATUS(x)		((x & DWC3_DEPCMD_STATUS_MASK) >> 12)
+#define DWC3_DEPCMD_STATUS(x)		(((x) & DWC3_DEPCMD_STATUS_MASK) >> 12)
 #define DWC3_DEPCMD_HIPRI_FORCERM	(1 << 11)
 #define DWC3_DEPCMD_CMDACT		(1 << 10)
 #define DWC3_DEPCMD_CMDIOC		(1 << 8)
@@ -288,7 +302,7 @@
 
 /* Structures */
 
-struct dwc3_trb_hw;
+struct dwc3_trb;
 
 /**
  * struct dwc3_event_buffer - Software event buffer representation
@@ -343,7 +357,7 @@ struct dwc3_ep {
 	struct list_head	request_list;
 	struct list_head	req_queued;
 
-	struct dwc3_trb_hw	*trb_pool;
+	struct dwc3_trb		*trb_pool;
 	dma_addr_t		trb_pool_dma;
 	u32			free_slot;
 	u32			busy_slot;
@@ -418,102 +432,49 @@ enum dwc3_device_state {
 	DWC3_CONFIGURED_STATE,
 };
 
-/**
- * struct dwc3_trb - transfer request block
- * @bpl: lower 32bit of the buffer
- * @bph: higher 32bit of the buffer
- * @length: buffer size (up to 16mb - 1)
- * @pcm1: packet count m1
- * @trbsts: trb status
- *	0 = ok
- *	1 = missed isoc
- *	2 = setup pending
- * @hwo: hardware owner of descriptor
- * @lst: last trb
- * @chn: chain buffers
- * @csp: continue on short packets (only supported on isoc eps)
- * @trbctl: trb control
- *	1 = normal
- *	2 = control-setup
- *	3 = control-status-2
- *	4 = control-status-3
- *	5 = control-data (first trb of data stage)
- *	6 = isochronous-first (first trb of service interval)
- *	7 = isochronous
- *	8 = link trb
- *	others = reserved
- * @isp_imi: interrupt on short packet / interrupt on missed isoc
- * @ioc: interrupt on complete
- * @sid_sofn: Stream ID / SOF Number
- */
-struct dwc3_trb {
-	u64             bplh;
-
-	union {
-		struct {
-			u32             length:24;
-			u32             pcm1:2;
-			u32             reserved27_26:2;
-			u32             trbsts:4;
-#define DWC3_TRB_STS_OKAY                       0
-#define DWC3_TRB_STS_MISSED_ISOC                1
-#define DWC3_TRB_STS_SETUP_PENDING              2
-		};
-		u32 len_pcm;
-	};
-
-	union {
-		struct {
-			u32             hwo:1;
-			u32             lst:1;
-			u32             chn:1;
-			u32             csp:1;
-			u32             trbctl:6;
-			u32             isp_imi:1;
-			u32             ioc:1;
-			u32             reserved13_12:2;
-			u32             sid_sofn:16;
-			u32             reserved31_30:2;
-		};
-		u32 control;
-	};
-} __packed;
+/* TRB Length, PCM and Status */
+#define DWC3_TRB_SIZE_MASK	(0x00ffffff)
+#define DWC3_TRB_SIZE_LENGTH(n)	((n) & DWC3_TRB_SIZE_MASK)
+#define DWC3_TRB_SIZE_PCM1(n)	(((n) & 0x03) << 24)
+#define DWC3_TRB_SIZE_TRBSTS(n)	(((n) & (0x0f << 28) >> 28))
+
+#define DWC3_TRBSTS_OK			0
+#define DWC3_TRBSTS_MISSED_ISOC		1
+#define DWC3_TRBSTS_SETUP_PENDING	2
+
+/* TRB Control */
+#define DWC3_TRB_CTRL_HWO		(1 << 0)
+#define DWC3_TRB_CTRL_LST		(1 << 1)
+#define DWC3_TRB_CTRL_CHN		(1 << 2)
+#define DWC3_TRB_CTRL_CSP		(1 << 3)
+#define DWC3_TRB_CTRL_TRBCTL(n)		(((n) & 0x3f) << 4)
+#define DWC3_TRB_CTRL_ISP_IMI		(1 << 10)
+#define DWC3_TRB_CTRL_IOC		(1 << 11)
+#define DWC3_TRB_CTRL_SID_SOFN(n)	(((n) & 0xffff) << 14)
+
+#define DWC3_TRBCTL_NORMAL		DWC3_TRB_CTRL_TRBCTL(1)
+#define DWC3_TRBCTL_CONTROL_SETUP	DWC3_TRB_CTRL_TRBCTL(2)
+#define DWC3_TRBCTL_CONTROL_STATUS2	DWC3_TRB_CTRL_TRBCTL(3)
+#define DWC3_TRBCTL_CONTROL_STATUS3	DWC3_TRB_CTRL_TRBCTL(4)
+#define DWC3_TRBCTL_CONTROL_DATA	DWC3_TRB_CTRL_TRBCTL(5)
+#define DWC3_TRBCTL_ISOCHRONOUS_FIRST	DWC3_TRB_CTRL_TRBCTL(6)
+#define DWC3_TRBCTL_ISOCHRONOUS		DWC3_TRB_CTRL_TRBCTL(7)
+#define DWC3_TRBCTL_LINK_TRB		DWC3_TRB_CTRL_TRBCTL(8)
 
 /**
- * struct dwc3_trb_hw - transfer request block (hw format)
+ * struct dwc3_trb - transfer request block (hw format)
  * @bpl: DW0-3
  * @bph: DW4-7
  * @size: DW8-B
  * @trl: DWC-F
  */
-struct dwc3_trb_hw {
-	__le32		bpl;
-	__le32		bph;
-	__le32		size;
-	__le32		ctrl;
+struct dwc3_trb {
+	u32		bpl;
+	u32		bph;
+	u32		size;
+	u32		ctrl;
 } __packed;
 
-static inline void dwc3_trb_to_hw(struct dwc3_trb *nat, struct dwc3_trb_hw *hw)
-{
-	hw->bpl = cpu_to_le32(lower_32_bits(nat->bplh));
-	hw->bph = cpu_to_le32(upper_32_bits(nat->bplh));
-	hw->size = cpu_to_le32p(&nat->len_pcm);
-	/* HWO is written last */
-	hw->ctrl = cpu_to_le32p(&nat->control);
-}
-
-static inline void dwc3_trb_to_nat(struct dwc3_trb_hw *hw, struct dwc3_trb *nat)
-{
-	u64 bplh;
-
-	bplh = le32_to_cpup(&hw->bpl);
-	bplh |= (u64) le32_to_cpup(&hw->bph) << 32;
-	nat->bplh = bplh;
-
-	nat->len_pcm = le32_to_cpup(&hw->size);
-	nat->control = le32_to_cpup(&hw->ctrl);
-}
-
 /**
  * dwc3_hwparams - copy of HWPARAMS registers
  * @hwparams0 - GHWPARAMS0
@@ -546,8 +507,13 @@ struct dwc3_hwparams {
 #define DWC3_MODE_DRD		2
 #define DWC3_MODE_HUB		3
 
+#define DWC3_MDWIDTH(n)		(((n) & 0xff00) >> 8)
+
 /* HWPARAMS1 */
-#define DWC3_NUM_INT(n)	(((n) & (0x3f << 15)) >> 15)
+#define DWC3_NUM_INT(n)		(((n) & (0x3f << 15)) >> 15)
+
+/* HWPARAMS7 */
+#define DWC3_RAM1_DEPTH(n)	((n) & 0xffff)
 
 struct dwc3_request {
 	struct usb_request	request;
@@ -555,7 +521,7 @@ struct dwc3_request {
 	struct dwc3_ep		*dep;
 
 	u8			epnum;
-	struct dwc3_trb_hw	*trb;
+	struct dwc3_trb		*trb;
 	dma_addr_t		trb_dma;
 
 	unsigned		direction:1;
@@ -572,7 +538,6 @@ struct dwc3_request {
  * @ctrl_req_addr: dma address of ctrl_req
  * @ep0_trb: dma address of ep0_trb
  * @ep0_usb_req: dummy req used while handling STD USB requests
- * @setup_buf_addr: dma address of setup_buf
  * @ep0_bounce_addr: dma address of ep0_bounce
  * @lock: for synchronizing
  * @dev: pointer to our struct device
@@ -594,6 +559,8 @@ struct dwc3_request {
  * @ep0_expect_in: true when we expect a DATA IN transfer
  * @start_config_issued: true when StartConfig command has been issued
  * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround
+ * @needs_fifo_resize: not all users might want fifo resizing, flag it
+ * @resize_fifos: tells us it's ok to reconfigure our TxFIFO sizes.
  * @ep0_next_event: hold the next expected event
  * @ep0state: state of endpoint zero
  * @link_state: link state
@@ -604,12 +571,11 @@ struct dwc3_request {
  */
 struct dwc3 {
 	struct usb_ctrlrequest	*ctrl_req;
-	struct dwc3_trb_hw	*ep0_trb;
+	struct dwc3_trb		*ep0_trb;
 	void			*ep0_bounce;
 	u8			*setup_buf;
 	dma_addr_t		ctrl_req_addr;
 	dma_addr_t		ep0_trb_addr;
-	dma_addr_t		setup_buf_addr;
 	dma_addr_t		ep0_bounce_addr;
 	struct dwc3_request	ep0_usb_req;
 	/* device lock */
@@ -651,6 +617,8 @@ struct dwc3 {
 	unsigned		start_config_issued:1;
 	unsigned		setup_packet_pending:1;
 	unsigned		delayed_status:1;
+	unsigned		needs_fifo_resize:1;
+	unsigned		resize_fifos:1;
 
 	enum dwc3_ep0_next	ep0_next_event;
 	enum dwc3_ep0_state	ep0state;
@@ -662,23 +630,13 @@ struct dwc3 {
 
 	struct dwc3_hwparams	hwparams;
 	struct dentry		*root;
+
+	u8			test_mode;
+	u8			test_mode_nr;
 };
 
 /* -------------------------------------------------------------------------- */
 
-#define DWC3_TRBSTS_OK			0
-#define DWC3_TRBSTS_MISSED_ISOC		1
-#define DWC3_TRBSTS_SETUP_PENDING	2
-
-#define DWC3_TRBCTL_NORMAL		1
-#define DWC3_TRBCTL_CONTROL_SETUP	2
-#define DWC3_TRBCTL_CONTROL_STATUS2	3
-#define DWC3_TRBCTL_CONTROL_STATUS3	4
-#define DWC3_TRBCTL_CONTROL_DATA	5
-#define DWC3_TRBCTL_ISOCHRONOUS_FIRST	6
-#define DWC3_TRBCTL_ISOCHRONOUS		7
-#define DWC3_TRBCTL_LINK_TRB		8
-
 /* -------------------------------------------------------------------------- */
 
 struct dwc3_event_type {
@@ -719,9 +677,14 @@ struct dwc3_event_depevt {
 	u32	endpoint_event:4;
 	u32	reserved11_10:2;
 	u32	status:4;
-#define DEPEVT_STATUS_BUSERR    (1 << 0)
-#define DEPEVT_STATUS_SHORT     (1 << 1)
-#define DEPEVT_STATUS_IOC       (1 << 2)
+
+/* Within XferNotReady */
+#define DEPEVT_STATUS_TRANSFER_ACTIVE	(1 << 3)
+
+/* Within XferComplete */
+#define DEPEVT_STATUS_BUSERR	(1 << 0)
+#define DEPEVT_STATUS_SHORT	(1 << 1)
+#define DEPEVT_STATUS_IOC	(1 << 2)
 #define DEPEVT_STATUS_LST	(1 << 3)
 
 /* Stream event only */
@@ -807,6 +770,7 @@ union dwc3_event {
 
 /* prototypes */
 void dwc3_set_mode(struct dwc3 *dwc, u32 mode);
+int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc);
 
 int dwc3_host_init(struct dwc3 *dwc);
 void dwc3_host_exit(struct dwc3 *dwc);

drivers/usb/dwc3/debugfs.c

@@ -46,6 +46,8 @@
 #include <linux/delay.h>
 #include <linux/uaccess.h>
 
+#include <linux/usb/ch9.h>
+
 #include "core.h"
 #include "gadget.h"
 #include "io.h"
@@ -464,6 +466,192 @@ static const struct file_operations dwc3_mode_fops = {
 	.release		= single_release,
 };
 
+static int dwc3_testmode_show(struct seq_file *s, void *unused)
+{
+	struct dwc3		*dwc = s->private;
+	unsigned long		flags;
+	u32			reg;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+	reg &= DWC3_DCTL_TSTCTRL_MASK;
+	reg >>= 1;
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	switch (reg) {
+	case 0:
+		seq_printf(s, "no test\n");
+		break;
+	case TEST_J:
+		seq_printf(s, "test_j\n");
+		break;
+	case TEST_K:
+		seq_printf(s, "test_k\n");
+		break;
+	case TEST_SE0_NAK:
+		seq_printf(s, "test_se0_nak\n");
+		break;
+	case TEST_PACKET:
+		seq_printf(s, "test_packet\n");
+		break;
+	case TEST_FORCE_EN:
+		seq_printf(s, "test_force_enable\n");
+		break;
+	default:
+		seq_printf(s, "UNKNOWN %d\n", reg);
+	}
+
+	return 0;
+}
+
+static int dwc3_testmode_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, dwc3_testmode_show, inode->i_private);
+}
+
+static ssize_t dwc3_testmode_write(struct file *file,
+		const char __user *ubuf, size_t count, loff_t *ppos)
+{
+	struct seq_file		*s = file->private_data;
+	struct dwc3		*dwc = s->private;
+	unsigned long		flags;
+	u32			testmode = 0;
+	char			buf[32];
+
+	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+		return -EFAULT;
+
+	if (!strncmp(buf, "test_j", 6))
+		testmode = TEST_J;
+	else if (!strncmp(buf, "test_k", 6))
+		testmode = TEST_K;
+	else if (!strncmp(buf, "test_se0_nak", 12))
+		testmode = TEST_SE0_NAK;
+	else if (!strncmp(buf, "test_packet", 11))
+		testmode = TEST_PACKET;
+	else if (!strncmp(buf, "test_force_enable", 17))
+		testmode = TEST_FORCE_EN;
+	else
+		testmode = 0;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	dwc3_gadget_set_test_mode(dwc, testmode);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return count;
+}
+
+static const struct file_operations dwc3_testmode_fops = {
+	.open			= dwc3_testmode_open,
+	.write			= dwc3_testmode_write,
+	.read			= seq_read,
+	.llseek			= seq_lseek,
+	.release		= single_release,
+};
+
+static int dwc3_link_state_show(struct seq_file *s, void *unused)
+{
+	struct dwc3		*dwc = s->private;
+	unsigned long		flags;
+	enum dwc3_link_state	state;
+	u32			reg;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+	state = DWC3_DSTS_USBLNKST(reg);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	switch (state) {
+	case DWC3_LINK_STATE_U0:
+		seq_printf(s, "U0\n");
+		break;
+	case DWC3_LINK_STATE_U1:
+		seq_printf(s, "U1\n");
+		break;
+	case DWC3_LINK_STATE_U2:
+		seq_printf(s, "U2\n");
+		break;
+	case DWC3_LINK_STATE_U3:
+		seq_printf(s, "U3\n");
+		break;
+	case DWC3_LINK_STATE_SS_DIS:
+		seq_printf(s, "SS.Disabled\n");
+		break;
+	case DWC3_LINK_STATE_RX_DET:
+		seq_printf(s, "Rx.Detect\n");
+		break;
+	case DWC3_LINK_STATE_SS_INACT:
+		seq_printf(s, "SS.Inactive\n");
+		break;
+	case DWC3_LINK_STATE_POLL:
+		seq_printf(s, "Poll\n");
+		break;
+	case DWC3_LINK_STATE_RECOV:
+		seq_printf(s, "Recovery\n");
+		break;
+	case DWC3_LINK_STATE_HRESET:
+		seq_printf(s, "HRESET\n");
+		break;
+	case DWC3_LINK_STATE_CMPLY:
+		seq_printf(s, "Compliance\n");
+		break;
+	case DWC3_LINK_STATE_LPBK:
+		seq_printf(s, "Loopback\n");
+		break;
+	default:
+		seq_printf(s, "UNKNOWN %d\n", reg);
+	}
+
+	return 0;
+}
+
+static int dwc3_link_state_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, dwc3_link_state_show, inode->i_private);
+}
+
+static ssize_t dwc3_link_state_write(struct file *file,
+		const char __user *ubuf, size_t count, loff_t *ppos)
+{
+	struct seq_file		*s = file->private_data;
+	struct dwc3		*dwc = s->private;
+	unsigned long		flags;
+	enum dwc3_link_state	state = 0;
+	char			buf[32];
+
+	if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+		return -EFAULT;
+
+	if (!strncmp(buf, "SS.Disabled", 11))
+		state = DWC3_LINK_STATE_SS_DIS;
+	else if (!strncmp(buf, "Rx.Detect", 9))
+		state = DWC3_LINK_STATE_RX_DET;
+	else if (!strncmp(buf, "SS.Inactive", 11))
+		state = DWC3_LINK_STATE_SS_INACT;
+	else if (!strncmp(buf, "Recovery", 8))
+		state = DWC3_LINK_STATE_RECOV;
+	else if (!strncmp(buf, "Compliance", 10))
+		state = DWC3_LINK_STATE_CMPLY;
+	else if (!strncmp(buf, "Loopback", 8))
+		state = DWC3_LINK_STATE_LPBK;
+	else
+		return -EINVAL;
+
+	spin_lock_irqsave(&dwc->lock, flags);
+	dwc3_gadget_set_link_state(dwc, state);
+	spin_unlock_irqrestore(&dwc->lock, flags);
+
+	return count;
+}
+
+static const struct file_operations dwc3_link_state_fops = {
+	.open			= dwc3_link_state_open,
+	.write			= dwc3_link_state_write,
+	.read			= seq_read,
+	.llseek			= seq_lseek,
+	.release		= single_release,
+};
+
 int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
 {
 	struct dentry		*root;
@@ -471,8 +659,8 @@ int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
 	int			ret;
 
 	root = debugfs_create_dir(dev_name(dwc->dev), NULL);
-	if (IS_ERR(root)) {
-		ret = PTR_ERR(root);
+	if (!root) {
+		ret = -ENOMEM;
 		goto err0;
 	}
 
@@ -480,15 +668,29 @@ int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
 
 	file = debugfs_create_file("regdump", S_IRUGO, root, dwc,
 			&dwc3_regdump_fops);
-	if (IS_ERR(file)) {
-		ret = PTR_ERR(file);
+	if (!file) {
+		ret = -ENOMEM;
 		goto err1;
 	}
 
 	file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
 			dwc, &dwc3_mode_fops);
-	if (IS_ERR(file)) {
-		ret = PTR_ERR(file);
+	if (!file) {
+		ret = -ENOMEM;
+		goto err1;
+	}
+
+	file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root,
+			dwc, &dwc3_testmode_fops);
+	if (!file) {
+		ret = -ENOMEM;
+		goto err1;
+	}
+
+	file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root,
+			dwc, &dwc3_link_state_fops);
+	if (!file) {
+		ret = -ENOMEM;
 		goto err1;
 	}
 

drivers/usb/dwc3/dwc3-exynos.c

@@ -0,0 +1,151 @@
+/**
+ * dwc3-exynos.c - Samsung EXYNOS DWC3 Specific Glue layer
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ *
+ * Author: Anton Tikhomirov <av.tikhomirov@samsung.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.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/dwc3-exynos.h>
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+#include <linux/clk.h>
+
+#include "core.h"
+
+struct dwc3_exynos {
+	struct platform_device	*dwc3;
+	struct device		*dev;
+
+	struct clk		*clk;
+};
+
+static int __devinit dwc3_exynos_probe(struct platform_device *pdev)
+{
+	struct dwc3_exynos_data	*pdata = pdev->dev.platform_data;
+	struct platform_device	*dwc3;
+	struct dwc3_exynos	*exynos;
+	struct clk		*clk;
+
+	int			devid;
+	int			ret = -ENOMEM;
+
+	exynos = kzalloc(sizeof(*exynos), GFP_KERNEL);
+	if (!exynos) {
+		dev_err(&pdev->dev, "not enough memory\n");
+		goto err0;
+	}
+
+	platform_set_drvdata(pdev, exynos);
+
+	devid = dwc3_get_device_id();
+	if (devid < 0)
+		goto err1;
+
+	dwc3 = platform_device_alloc("dwc3", devid);
+	if (!dwc3) {
+		dev_err(&pdev->dev, "couldn't allocate dwc3 device\n");
+		goto err2;
+	}
+
+	clk = clk_get(&pdev->dev, "usbdrd30");
+	if (IS_ERR(clk)) {
+		dev_err(&pdev->dev, "couldn't get clock\n");
+		ret = -EINVAL;
+		goto err3;
+	}
+
+	dma_set_coherent_mask(&dwc3->dev, pdev->dev.coherent_dma_mask);
+
+	dwc3->dev.parent = &pdev->dev;
+	dwc3->dev.dma_mask = pdev->dev.dma_mask;
+	dwc3->dev.dma_parms = pdev->dev.dma_parms;
+	exynos->dwc3	= dwc3;
+	exynos->dev	= &pdev->dev;
+	exynos->clk	= clk;
+
+	clk_enable(exynos->clk);
+
+	/* PHY initialization */
+	if (!pdata) {
+		dev_dbg(&pdev->dev, "missing platform data\n");
+	} else {
+		if (pdata->phy_init)
+			pdata->phy_init(pdev, pdata->phy_type);
+	}
+
+	ret = platform_device_add_resources(dwc3, pdev->resource,
+			pdev->num_resources);
+	if (ret) {
+		dev_err(&pdev->dev, "couldn't add resources to dwc3 device\n");
+		goto err4;
+	}
+
+	ret = platform_device_add(dwc3);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register dwc3 device\n");
+		goto err4;
+	}
+
+	return 0;
+
+err4:
+	if (pdata && pdata->phy_exit)
+		pdata->phy_exit(pdev, pdata->phy_type);
+
+	clk_disable(clk);
+	clk_put(clk);
+err3:
+	platform_device_put(dwc3);
+err2:
+	dwc3_put_device_id(devid);
+err1:
+	kfree(exynos);
+err0:
+	return ret;
+}
+
+static int __devexit dwc3_exynos_remove(struct platform_device *pdev)
+{
+	struct dwc3_exynos	*exynos = platform_get_drvdata(pdev);
+	struct dwc3_exynos_data *pdata = pdev->dev.platform_data;
+
+	platform_device_unregister(exynos->dwc3);
+
+	dwc3_put_device_id(exynos->dwc3->id);
+
+	if (pdata && pdata->phy_exit)
+		pdata->phy_exit(pdev, pdata->phy_type);
+
+	clk_disable(exynos->clk);
+	clk_put(exynos->clk);
+
+	kfree(exynos);
+
+	return 0;
+}
+
+static struct platform_driver dwc3_exynos_driver = {
+	.probe		= dwc3_exynos_probe,
+	.remove		= __devexit_p(dwc3_exynos_remove),
+	.driver		= {
+		.name	= "exynos-dwc3",
+	},
+};
+
+module_platform_driver(dwc3_exynos_driver);
+
+MODULE_ALIAS("platform:exynos-dwc3");
+MODULE_AUTHOR("Anton Tikhomirov <av.tikhomirov@samsung.com>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("DesignWare USB3 EXYNOS Glue Layer");

drivers/usb/dwc3/dwc3-omap.c

@@ -46,7 +46,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/ioport.h>
 #include <linux/io.h>
-#include <linux/module.h>
+#include <linux/of.h>
 
 #include "core.h"
 #include "io.h"
@@ -197,91 +197,99 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
 static int __devinit dwc3_omap_probe(struct platform_device *pdev)
 {
 	struct dwc3_omap_data	*pdata = pdev->dev.platform_data;
+	struct device_node	*node = pdev->dev.of_node;
+
 	struct platform_device	*dwc3;
 	struct dwc3_omap	*omap;
 	struct resource		*res;
+	struct device		*dev = &pdev->dev;
 
 	int			devid;
+	int			size;
 	int			ret = -ENOMEM;
 	int			irq;
 
+	const u32		*utmi_mode;
 	u32			reg;
 
 	void __iomem		*base;
 	void			*context;
 
-	omap = kzalloc(sizeof(*omap), GFP_KERNEL);
+	omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL);
 	if (!omap) {
-		dev_err(&pdev->dev, "not enough memory\n");
-		goto err0;
+		dev_err(dev, "not enough memory\n");
+		return -ENOMEM;
 	}
 
 	platform_set_drvdata(pdev, omap);
 
 	irq = platform_get_irq(pdev, 1);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "missing IRQ resource\n");
-		ret = -EINVAL;
-		goto err1;
+		dev_err(dev, "missing IRQ resource\n");
+		return -EINVAL;
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
 	if (!res) {
-		dev_err(&pdev->dev, "missing memory base resource\n");
-		ret = -EINVAL;
-		goto err1;
+		dev_err(dev, "missing memory base resource\n");
+		return -EINVAL;
 	}
 
-	base = ioremap_nocache(res->start, resource_size(res));
+	base = devm_ioremap_nocache(dev, res->start, resource_size(res));
 	if (!base) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		goto err1;
+		dev_err(dev, "ioremap failed\n");
+		return -ENOMEM;
 	}
 
 	devid = dwc3_get_device_id();
 	if (devid < 0)
-		goto err2;
+		return -ENODEV;
 
 	dwc3 = platform_device_alloc("dwc3", devid);
 	if (!dwc3) {
-		dev_err(&pdev->dev, "couldn't allocate dwc3 device\n");
-		goto err3;
+		dev_err(dev, "couldn't allocate dwc3 device\n");
+		goto err1;
 	}
 
-	context = kzalloc(resource_size(res), GFP_KERNEL);
+	context = devm_kzalloc(dev, resource_size(res), GFP_KERNEL);
 	if (!context) {
-		dev_err(&pdev->dev, "couldn't allocate dwc3 context memory\n");
-		goto err4;
+		dev_err(dev, "couldn't allocate dwc3 context memory\n");
+		goto err2;
 	}
 
 	spin_lock_init(&omap->lock);
-	dma_set_coherent_mask(&dwc3->dev, pdev->dev.coherent_dma_mask);
+	dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
 
-	dwc3->dev.parent = &pdev->dev;
-	dwc3->dev.dma_mask = pdev->dev.dma_mask;
-	dwc3->dev.dma_parms = pdev->dev.dma_parms;
+	dwc3->dev.parent = dev;
+	dwc3->dev.dma_mask = dev->dma_mask;
+	dwc3->dev.dma_parms = dev->dma_parms;
 	omap->resource_size = resource_size(res);
 	omap->context	= context;
-	omap->dev	= &pdev->dev;
+	omap->dev	= dev;
 	omap->irq	= irq;
 	omap->base	= base;
 	omap->dwc3	= dwc3;
 
 	reg = dwc3_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS);
 
-	if (!pdata) {
-		dev_dbg(&pdev->dev, "missing platform data\n");
+	utmi_mode = of_get_property(node, "utmi-mode", &size);
+	if (utmi_mode && size == sizeof(*utmi_mode)) {
+		reg |= *utmi_mode;
 	} else {
-		switch (pdata->utmi_mode) {
-		case DWC3_OMAP_UTMI_MODE_SW:
-			reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
-			break;
-		case DWC3_OMAP_UTMI_MODE_HW:
-			reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
-			break;
-		default:
-			dev_dbg(&pdev->dev, "UNKNOWN utmi mode %d\n",
-					pdata->utmi_mode);
+		if (!pdata) {
+			dev_dbg(dev, "missing platform data\n");
+		} else {
+			switch (pdata->utmi_mode) {
+			case DWC3_OMAP_UTMI_MODE_SW:
+				reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
+				break;
+			case DWC3_OMAP_UTMI_MODE_HW:
+				reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
+				break;
+			default:
+				dev_dbg(dev, "UNKNOWN utmi mode %d\n",
+						pdata->utmi_mode);
+			}
 		}
 	}
 
@@ -300,12 +308,12 @@ static int __devinit dwc3_omap_probe(struct platform_device *pdev)
 
 	dwc3_writel(omap->base, USBOTGSS_SYSCONFIG, reg);
 
-	ret = request_irq(omap->irq, dwc3_omap_interrupt, 0,
+	ret = devm_request_irq(dev, omap->irq, dwc3_omap_interrupt, 0,
 			"dwc3-omap", omap);
 	if (ret) {
-		dev_err(&pdev->dev, "failed to request IRQ #%d --> %d\n",
+		dev_err(dev, "failed to request IRQ #%d --> %d\n",
 				omap->irq, ret);
-		goto err5;
+		goto err2;
 	}
 
 	/* enable all IRQs */
@@ -327,37 +335,24 @@ static int __devinit dwc3_omap_probe(struct platform_device *pdev)
 	ret = platform_device_add_resources(dwc3, pdev->resource,
 			pdev->num_resources);
 	if (ret) {
-		dev_err(&pdev->dev, "couldn't add resources to dwc3 device\n");
-		goto err6;
+		dev_err(dev, "couldn't add resources to dwc3 device\n");
+		goto err2;
 	}
 
 	ret = platform_device_add(dwc3);
 	if (ret) {
-		dev_err(&pdev->dev, "failed to register dwc3 device\n");
-		goto err6;
+		dev_err(dev, "failed to register dwc3 device\n");
+		goto err2;
 	}
 
 	return 0;
 
-err6:
-	free_irq(omap->irq, omap);
-
-err5:
-	kfree(omap->context);
-
-err4:
-	platform_device_put(dwc3);
-
-err3:
-	dwc3_put_device_id(devid);
-
 err2:
-	iounmap(base);
+	platform_device_put(dwc3);
 
 err1:
-	kfree(omap);
+	dwc3_put_device_id(devid);
 
-err0:
 	return ret;
 }
 
@@ -368,11 +363,6 @@ static int __devexit dwc3_omap_remove(struct platform_device *pdev)
 	platform_device_unregister(omap->dwc3);
 
 	dwc3_put_device_id(omap->dwc3->id);
-	free_irq(omap->irq, omap);
-	iounmap(omap->base);
-
-	kfree(omap->context);
-	kfree(omap);
 
 	return 0;
 }

drivers/usb/dwc3/dwc3-pci.c

@@ -61,32 +61,35 @@ static int __devinit dwc3_pci_probe(struct pci_dev *pci,
 	struct dwc3_pci		*glue;
 	int			ret = -ENOMEM;
 	int			devid;
+	struct device		*dev = &pci->dev;
 
-	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
+	glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
 	if (!glue) {
-		dev_err(&pci->dev, "not enough memory\n");
-		goto err0;
+		dev_err(dev, "not enough memory\n");
+		return -ENOMEM;
 	}
 
-	glue->dev	= &pci->dev;
+	glue->dev = dev;
 
 	ret = pci_enable_device(pci);
 	if (ret) {
-		dev_err(&pci->dev, "failed to enable pci device\n");
-		goto err1;
+		dev_err(dev, "failed to enable pci device\n");
+		return -ENODEV;
 	}
 
 	pci_set_power_state(pci, PCI_D0);
 	pci_set_master(pci);
 
 	devid = dwc3_get_device_id();
-	if (devid < 0)
-		goto err2;
+	if (devid < 0) {
+		ret = -ENOMEM;
+		goto err1;
+	}
 
 	dwc3 = platform_device_alloc("dwc3", devid);
 	if (!dwc3) {
-		dev_err(&pci->dev, "couldn't allocate dwc3 device\n");
-		goto err3;
+		dev_err(dev, "couldn't allocate dwc3 device\n");
+		goto err1;
 	}
 
 	memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
@@ -102,41 +105,37 @@ static int __devinit dwc3_pci_probe(struct pci_dev *pci,
 
 	ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
 	if (ret) {
-		dev_err(&pci->dev, "couldn't add resources to dwc3 device\n");
-		goto err4;
+		dev_err(dev, "couldn't add resources to dwc3 device\n");
+		goto err2;
 	}
 
 	pci_set_drvdata(pci, glue);
 
-	dma_set_coherent_mask(&dwc3->dev, pci->dev.coherent_dma_mask);
+	dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
 
-	dwc3->dev.dma_mask = pci->dev.dma_mask;
-	dwc3->dev.dma_parms = pci->dev.dma_parms;
-	dwc3->dev.parent = &pci->dev;
-	glue->dwc3	= dwc3;
+	dwc3->dev.dma_mask = dev->dma_mask;
+	dwc3->dev.dma_parms = dev->dma_parms;
+	dwc3->dev.parent = dev;
+	glue->dwc3 = dwc3;
 
 	ret = platform_device_add(dwc3);
 	if (ret) {
-		dev_err(&pci->dev, "failed to register dwc3 device\n");
-		goto err4;
+		dev_err(dev, "failed to register dwc3 device\n");
+		goto err3;
 	}
 
 	return 0;
 
-err4:
+err3:
 	pci_set_drvdata(pci, NULL);
 	platform_device_put(dwc3);
 
-err3:
-	dwc3_put_device_id(devid);
-
 err2:
-	pci_disable_device(pci);
+	dwc3_put_device_id(devid);
 
 err1:
-	kfree(glue);
+	pci_disable_device(pci);
 
-err0:
 	return ret;
 }
 
@@ -148,7 +147,6 @@ static void __devexit dwc3_pci_remove(struct pci_dev *pci)
 	platform_device_unregister(glue->dwc3);
 	pci_set_drvdata(pci, NULL);
 	pci_disable_device(pci);
-	kfree(glue);
 }
 
 static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = {

drivers/usb/dwc3/ep0.c

@@ -76,8 +76,7 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma,
 		u32 len, u32 type)
 {
 	struct dwc3_gadget_ep_cmd_params params;
-	struct dwc3_trb_hw		*trb_hw;
-	struct dwc3_trb			trb;
+	struct dwc3_trb			*trb;
 	struct dwc3_ep			*dep;
 
 	int				ret;
@@ -88,19 +87,17 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma,
 		return 0;
 	}
 
-	trb_hw = dwc->ep0_trb;
-	memset(&trb, 0, sizeof(trb));
+	trb = dwc->ep0_trb;
 
-	trb.trbctl = type;
-	trb.bplh = buf_dma;
-	trb.length = len;
+	trb->bpl = lower_32_bits(buf_dma);
+	trb->bph = upper_32_bits(buf_dma);
+	trb->size = len;
+	trb->ctrl = type;
 
-	trb.hwo	= 1;
-	trb.lst	= 1;
-	trb.ioc	= 1;
-	trb.isp_imi = 1;
-
-	dwc3_trb_to_hw(&trb, trb_hw);
+	trb->ctrl |= (DWC3_TRB_CTRL_HWO
+			| DWC3_TRB_CTRL_LST
+			| DWC3_TRB_CTRL_IOC
+			| DWC3_TRB_CTRL_ISP_IMI);
 
 	memset(&params, 0, sizeof(params));
 	params.param0 = upper_32_bits(dwc->ep0_trb_addr);
@@ -302,7 +299,7 @@ static int dwc3_ep0_handle_status(struct dwc3 *dwc,
 	dep = dwc->eps[0];
 	dwc->ep0_usb_req.dep = dep;
 	dwc->ep0_usb_req.request.length = sizeof(*response_pkt);
-	dwc->ep0_usb_req.request.dma = dwc->setup_buf_addr;
+	dwc->ep0_usb_req.request.buf = dwc->setup_buf;
 	dwc->ep0_usb_req.request.complete = dwc3_ep0_status_cmpl;
 
 	return __dwc3_gadget_ep0_queue(dep, &dwc->ep0_usb_req);
@@ -315,9 +312,7 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
 	u32			recip;
 	u32			wValue;
 	u32			wIndex;
-	u32			reg;
 	int			ret;
-	u32			mode;
 
 	wValue = le16_to_cpu(ctrl->wValue);
 	wIndex = le16_to_cpu(ctrl->wIndex);
@@ -356,25 +351,8 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
 			if (!set)
 				return -EINVAL;
 
-			mode = wIndex >> 8;
-			reg = dwc3_readl(dwc->regs, DWC3_DCTL);
-			reg &= ~DWC3_DCTL_TSTCTRL_MASK;
-
-			switch (mode) {
-			case TEST_J:
-			case TEST_K:
-			case TEST_SE0_NAK:
-			case TEST_PACKET:
-			case TEST_FORCE_EN:
-				reg |= mode << 1;
-				break;
-			default:
-				return -EINVAL;
-			}
-			dwc3_writel(dwc->regs, DWC3_DCTL, reg);
-			break;
-		default:
-			return -EINVAL;
+			dwc->test_mode_nr = wIndex >> 8;
+			dwc->test_mode = true;
 		}
 		break;
 
@@ -396,7 +374,7 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
 	case USB_RECIP_ENDPOINT:
 		switch (wValue) {
 		case USB_ENDPOINT_HALT:
-			dep =  dwc3_wIndex_to_dep(dwc, wIndex);
+			dep = dwc3_wIndex_to_dep(dwc, wIndex);
 			if (!dep)
 				return -EINVAL;
 			ret = __dwc3_gadget_ep_set_halt(dep, set);
@@ -470,8 +448,11 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
 	case DWC3_ADDRESS_STATE:
 		ret = dwc3_ep0_delegate_req(dwc, ctrl);
 		/* if the cfg matches and the cfg is non zero */
-		if (!ret && cfg)
+		if (cfg && (!ret || (ret == USB_GADGET_DELAYED_STATUS))) {
 			dwc->dev_state = DWC3_CONFIGURED_STATE;
+			dwc->resize_fifos = true;
+			dev_dbg(dwc->dev, "resize fifos flag SET\n");
+		}
 		break;
 
 	case DWC3_CONFIGURED_STATE:
@@ -560,9 +541,10 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
 {
 	struct dwc3_request	*r = NULL;
 	struct usb_request	*ur;
-	struct dwc3_trb		trb;
+	struct dwc3_trb		*trb;
 	struct dwc3_ep		*ep0;
 	u32			transferred;
+	u32			length;
 	u8			epnum;
 
 	epnum = event->endpoint_number;
@@ -573,16 +555,16 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
 	r = next_request(&ep0->request_list);
 	ur = &r->request;
 
-	dwc3_trb_to_nat(dwc->ep0_trb, &trb);
+	trb = dwc->ep0_trb;
+	length = trb->size & DWC3_TRB_SIZE_MASK;
 
 	if (dwc->ep0_bounced) {
-
 		transferred = min_t(u32, ur->length,
-				ep0->endpoint.maxpacket - trb.length);
+				ep0->endpoint.maxpacket - length);
 		memcpy(ur->buf, dwc->ep0_bounce, transferred);
 		dwc->ep0_bounced = false;
 	} else {
-		transferred = ur->length - trb.length;
+		transferred = ur->length - length;
 		ur->actual += transferred;
 	}
 
@@ -614,6 +596,17 @@ static void dwc3_ep0_complete_req(struct dwc3 *dwc,
 		dwc3_gadget_giveback(dep, r, 0);
 	}
 
+	if (dwc->test_mode) {
+		int ret;
+
+		ret = dwc3_gadget_set_test_mode(dwc, dwc->test_mode_nr);
+		if (ret < 0) {
+			dev_dbg(dwc->dev, "Invalid Test #%d\n",
+					dwc->test_mode_nr);
+			dwc3_ep0_stall_and_restart(dwc);
+		}
+	}
+
 	dwc->ep0state = EP0_SETUP_PHASE;
 	dwc3_ep0_out_start(dwc);
 }
@@ -624,6 +617,7 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
 	struct dwc3_ep		*dep = dwc->eps[event->endpoint_number];
 
 	dep->flags &= ~DWC3_EP_BUSY;
+	dep->res_trans_idx = 0;
 	dwc->setup_packet_pending = false;
 
 	switch (dwc->ep0state) {
@@ -679,7 +673,12 @@ static void dwc3_ep0_do_control_data(struct dwc3 *dwc,
 				DWC3_TRBCTL_CONTROL_DATA);
 	} else if ((req->request.length % dep->endpoint.maxpacket)
 			&& (event->endpoint_number == 0)) {
-		dwc3_map_buffer_to_dma(req);
+		ret = usb_gadget_map_request(&dwc->gadget, &req->request,
+				event->endpoint_number);
+		if (ret) {
+			dev_dbg(dwc->dev, "failed to map request\n");
+			return;
+		}
 
 		WARN_ON(req->request.length > dep->endpoint.maxpacket);
 
@@ -694,7 +693,12 @@ static void dwc3_ep0_do_control_data(struct dwc3 *dwc,
 				dwc->ep0_bounce_addr, dep->endpoint.maxpacket,
 				DWC3_TRBCTL_CONTROL_DATA);
 	} else {
-		dwc3_map_buffer_to_dma(req);
+		ret = usb_gadget_map_request(&dwc->gadget, &req->request,
+				event->endpoint_number);
+		if (ret) {
+			dev_dbg(dwc->dev, "failed to map request\n");
+			return;
+		}
 
 		ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
 				req->request.dma, req->request.length,
@@ -720,6 +724,12 @@ static void dwc3_ep0_do_control_status(struct dwc3 *dwc, u32 epnum)
 {
 	struct dwc3_ep		*dep = dwc->eps[epnum];
 
+	if (dwc->resize_fifos) {
+		dev_dbg(dwc->dev, "starting to resize fifos\n");
+		dwc3_gadget_resize_tx_fifos(dwc);
+		dwc->resize_fifos = 0;
+	}
+
 	WARN_ON(dwc3_ep0_start_control_status(dep));
 }
 

drivers/usb/dwc3/gadget.c

@@ -54,68 +54,162 @@
 #include "gadget.h"
 #include "io.h"
 
-#define	DMA_ADDR_INVALID	(~(dma_addr_t)0)
-
-void dwc3_map_buffer_to_dma(struct dwc3_request *req)
+/**
+ * dwc3_gadget_set_test_mode - Enables USB2 Test Modes
+ * @dwc: pointer to our context structure
+ * @mode: the mode to set (J, K SE0 NAK, Force Enable)
+ *
+ * Caller should take care of locking. This function will
+ * return 0 on success or -EINVAL if wrong Test Selector
+ * is passed
+ */
+int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode)
 {
-	struct dwc3			*dwc = req->dep->dwc;
+	u32		reg;
 
-	if (req->request.length == 0) {
-		/* req->request.dma = dwc->setup_buf_addr; */
-		return;
+	reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+	reg &= ~DWC3_DCTL_TSTCTRL_MASK;
+
+	switch (mode) {
+	case TEST_J:
+	case TEST_K:
+	case TEST_SE0_NAK:
+	case TEST_PACKET:
+	case TEST_FORCE_EN:
+		reg |= mode << 1;
+		break;
+	default:
+		return -EINVAL;
 	}
 
-	if (req->request.num_sgs) {
-		int	mapped;
+	dwc3_writel(dwc->regs, DWC3_DCTL, reg);
 
-		mapped = dma_map_sg(dwc->dev, req->request.sg,
-				req->request.num_sgs,
-				req->direction ? DMA_TO_DEVICE
-				: DMA_FROM_DEVICE);
-		if (mapped < 0) {
-			dev_err(dwc->dev, "failed to map SGs\n");
-			return;
-		}
+	return 0;
+}
 
-		req->request.num_mapped_sgs = mapped;
-		return;
-	}
+/**
+ * dwc3_gadget_set_link_state - Sets USB Link to a particular State
+ * @dwc: pointer to our context structure
+ * @state: the state to put link into
+ *
+ * Caller should take care of locking. This function will
+ * return 0 on success or -ETIMEDOUT.
+ */
+int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state)
+{
+	int		retries = 10000;
+	u32		reg;
+
+	reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+	reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
 
-	if (req->request.dma == DMA_ADDR_INVALID) {
-		req->request.dma = dma_map_single(dwc->dev, req->request.buf,
-				req->request.length, req->direction
-				? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-		req->mapped = true;
+	/* set requested state */
+	reg |= DWC3_DCTL_ULSTCHNGREQ(state);
+	dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
+	/* wait for a change in DSTS */
+	while (--retries) {
+		reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+
+		if (DWC3_DSTS_USBLNKST(reg) == state)
+			return 0;
+
+		udelay(5);
 	}
+
+	dev_vdbg(dwc->dev, "link state change request timed out\n");
+
+	return -ETIMEDOUT;
 }
 
-void dwc3_unmap_buffer_from_dma(struct dwc3_request *req)
+/**
+ * dwc3_gadget_resize_tx_fifos - reallocate fifo spaces for current use-case
+ * @dwc: pointer to our context structure
+ *
+ * This function will a best effort FIFO allocation in order
+ * to improve FIFO usage and throughput, while still allowing
+ * us to enable as many endpoints as possible.
+ *
+ * Keep in mind that this operation will be highly dependent
+ * on the configured size for RAM1 - which contains TxFifo -,
+ * the amount of endpoints enabled on coreConsultant tool, and
+ * the width of the Master Bus.
+ *
+ * In the ideal world, we would always be able to satisfy the
+ * following equation:
+ *
+ * ((512 + 2 * MDWIDTH-Bytes) + (Number of IN Endpoints - 1) * \
+ * (3 * (1024 + MDWIDTH-Bytes) + MDWIDTH-Bytes)) / MDWIDTH-Bytes
+ *
+ * Unfortunately, due to many variables that's not always the case.
+ */
+int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc)
 {
-	struct dwc3			*dwc = req->dep->dwc;
+	int		last_fifo_depth = 0;
+	int		ram1_depth;
+	int		fifo_size;
+	int		mdwidth;
+	int		num;
 
-	if (req->request.length == 0) {
-		req->request.dma = DMA_ADDR_INVALID;
-		return;
-	}
+	if (!dwc->needs_fifo_resize)
+		return 0;
 
-	if (req->request.num_mapped_sgs) {
-		req->request.dma = DMA_ADDR_INVALID;
-		dma_unmap_sg(dwc->dev, req->request.sg,
-				req->request.num_mapped_sgs,
-				req->direction ? DMA_TO_DEVICE
-				: DMA_FROM_DEVICE);
+	ram1_depth = DWC3_RAM1_DEPTH(dwc->hwparams.hwparams7);
+	mdwidth = DWC3_MDWIDTH(dwc->hwparams.hwparams0);
 
-		req->request.num_mapped_sgs = 0;
-		return;
-	}
+	/* MDWIDTH is represented in bits, we need it in bytes */
+	mdwidth >>= 3;
+
+	/*
+	 * FIXME For now we will only allocate 1 wMaxPacketSize space
+	 * for each enabled endpoint, later patches will come to
+	 * improve this algorithm so that we better use the internal
+	 * FIFO space
+	 */
+	for (num = 0; num < DWC3_ENDPOINTS_NUM; num++) {
+		struct dwc3_ep	*dep = dwc->eps[num];
+		int		fifo_number = dep->number >> 1;
+		int		mult = 1;
+		int		tmp;
+
+		if (!(dep->number & 1))
+			continue;
+
+		if (!(dep->flags & DWC3_EP_ENABLED))
+			continue;
+
+		if (usb_endpoint_xfer_bulk(dep->desc)
+				|| usb_endpoint_xfer_isoc(dep->desc))
+			mult = 3;
+
+		/*
+		 * REVISIT: the following assumes we will always have enough
+		 * space available on the FIFO RAM for all possible use cases.
+		 * Make sure that's true somehow and change FIFO allocation
+		 * accordingly.
+		 *
+		 * If we have Bulk or Isochronous endpoints, we want
+		 * them to be able to be very, very fast. So we're giving
+		 * those endpoints a fifo_size which is enough for 3 full
+		 * packets
+		 */
+		tmp = mult * (dep->endpoint.maxpacket + mdwidth);
+		tmp += mdwidth;
+
+		fifo_size = DIV_ROUND_UP(tmp, mdwidth);
+
+		fifo_size |= (last_fifo_depth << 16);
+
+		dev_vdbg(dwc->dev, "%s: Fifo Addr %04x Size %d\n",
+				dep->name, last_fifo_depth, fifo_size & 0xffff);
+
+		dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(fifo_number),
+				fifo_size);
 
-	if (req->mapped) {
-		dma_unmap_single(dwc->dev, req->request.dma,
-				req->request.length, req->direction
-				? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-		req->mapped = 0;
-		req->request.dma = DMA_ADDR_INVALID;
+		last_fifo_depth += (fifo_size & 0xffff);
 	}
+
+	return 0;
 }
 
 void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
@@ -144,14 +238,15 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
 	if (req->request.status == -EINPROGRESS)
 		req->request.status = status;
 
-	dwc3_unmap_buffer_from_dma(req);
+	usb_gadget_unmap_request(&dwc->gadget, &req->request,
+			req->direction);
 
 	dev_dbg(dwc->dev, "request %p from %s completed %d/%d ===> %d\n",
 			req, dep->name, req->request.actual,
 			req->request.length, status);
 
 	spin_unlock(&dwc->lock);
-	req->request.complete(&req->dep->endpoint, &req->request);
+	req->request.complete(&dep->endpoint, &req->request);
 	spin_lock(&dwc->lock);
 }
 
@@ -219,7 +314,7 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 }
 
 static dma_addr_t dwc3_trb_dma_offset(struct dwc3_ep *dep,
-		struct dwc3_trb_hw *trb)
+		struct dwc3_trb *trb)
 {
 	u32		offset = (char *) trb - (char *) dep->trb_pool;
 
@@ -368,9 +463,8 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
 		return ret;
 
 	if (!(dep->flags & DWC3_EP_ENABLED)) {
-		struct dwc3_trb_hw	*trb_st_hw;
-		struct dwc3_trb_hw	*trb_link_hw;
-		struct dwc3_trb		trb_link;
+		struct dwc3_trb	*trb_st_hw;
+		struct dwc3_trb	*trb_link;
 
 		ret = dwc3_gadget_set_xfer_resource(dwc, dep);
 		if (ret)
@@ -390,15 +484,15 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
 
 		memset(&trb_link, 0, sizeof(trb_link));
 
-		/* Link TRB for ISOC. The HWO but is never reset */
+		/* Link TRB for ISOC. The HWO bit is never reset */
 		trb_st_hw = &dep->trb_pool[0];
 
-		trb_link.bplh = dwc3_trb_dma_offset(dep, trb_st_hw);
-		trb_link.trbctl = DWC3_TRBCTL_LINK_TRB;
-		trb_link.hwo = true;
+		trb_link = &dep->trb_pool[DWC3_TRB_NUM - 1];
 
-		trb_link_hw = &dep->trb_pool[DWC3_TRB_NUM - 1];
-		dwc3_trb_to_hw(&trb_link, trb_link_hw);
+		trb_link->bpl = lower_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw));
+		trb_link->bph = upper_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw));
+		trb_link->ctrl |= DWC3_TRBCTL_LINK_TRB;
+		trb_link->ctrl |= DWC3_TRB_CTRL_HWO;
 	}
 
 	return 0;
@@ -440,6 +534,7 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep)
 
 	dep->stream_capable = false;
 	dep->desc = NULL;
+	dep->endpoint.desc = NULL;
 	dep->comp_desc = NULL;
 	dep->type = 0;
 	dep->flags = 0;
@@ -485,16 +580,16 @@ static int dwc3_gadget_ep_enable(struct usb_ep *ep,
 
 	switch (usb_endpoint_type(desc)) {
 	case USB_ENDPOINT_XFER_CONTROL:
-		strncat(dep->name, "-control", sizeof(dep->name));
+		strlcat(dep->name, "-control", sizeof(dep->name));
 		break;
 	case USB_ENDPOINT_XFER_ISOC:
-		strncat(dep->name, "-isoc", sizeof(dep->name));
+		strlcat(dep->name, "-isoc", sizeof(dep->name));
 		break;
 	case USB_ENDPOINT_XFER_BULK:
-		strncat(dep->name, "-bulk", sizeof(dep->name));
+		strlcat(dep->name, "-bulk", sizeof(dep->name));
 		break;
 	case USB_ENDPOINT_XFER_INT:
-		strncat(dep->name, "-int", sizeof(dep->name));
+		strlcat(dep->name, "-int", sizeof(dep->name));
 		break;
 	default:
 		dev_err(dwc->dev, "invalid endpoint transfer type\n");
@@ -562,7 +657,6 @@ static struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep,
 
 	req->epnum	= dep->number;
 	req->dep	= dep;
-	req->request.dma = DMA_ADDR_INVALID;
 
 	return &req->request;
 }
@@ -585,8 +679,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
 		unsigned length, unsigned last, unsigned chain)
 {
 	struct dwc3		*dwc = dep->dwc;
-	struct dwc3_trb_hw	*trb_hw;
-	struct dwc3_trb		trb;
+	struct dwc3_trb		*trb;
 
 	unsigned int		cur_slot;
 
@@ -595,7 +688,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
 			length, last ? " last" : "",
 			chain ? " chain" : "");
 
-	trb_hw = &dep->trb_pool[dep->free_slot & DWC3_TRB_MASK];
+	trb = &dep->trb_pool[dep->free_slot & DWC3_TRB_MASK];
 	cur_slot = dep->free_slot;
 	dep->free_slot++;
 
@@ -604,40 +697,32 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
 			usb_endpoint_xfer_isoc(dep->desc))
 		return;
 
-	memset(&trb, 0, sizeof(trb));
 	if (!req->trb) {
 		dwc3_gadget_move_request_queued(req);
-		req->trb = trb_hw;
-		req->trb_dma = dwc3_trb_dma_offset(dep, trb_hw);
+		req->trb = trb;
+		req->trb_dma = dwc3_trb_dma_offset(dep, trb);
 	}
 
-	if (usb_endpoint_xfer_isoc(dep->desc)) {
-		trb.isp_imi = true;
-		trb.csp = true;
-	} else {
-		trb.chn = chain;
-		trb.lst = last;
-	}
-
-	if (usb_endpoint_xfer_bulk(dep->desc) && dep->stream_capable)
-		trb.sid_sofn = req->request.stream_id;
+	trb->size = DWC3_TRB_SIZE_LENGTH(length);
+	trb->bpl = lower_32_bits(dma);
+	trb->bph = upper_32_bits(dma);
 
 	switch (usb_endpoint_type(dep->desc)) {
 	case USB_ENDPOINT_XFER_CONTROL:
-		trb.trbctl = DWC3_TRBCTL_CONTROL_SETUP;
+		trb->ctrl = DWC3_TRBCTL_CONTROL_SETUP;
 		break;
 
 	case USB_ENDPOINT_XFER_ISOC:
-		trb.trbctl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;
+		trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;
 
 		/* IOC every DWC3_TRB_NUM / 4 so we can refill */
 		if (!(cur_slot % (DWC3_TRB_NUM / 4)))
-			trb.ioc = last;
+			trb->ctrl |= DWC3_TRB_CTRL_IOC;
 		break;
 
 	case USB_ENDPOINT_XFER_BULK:
 	case USB_ENDPOINT_XFER_INT:
-		trb.trbctl = DWC3_TRBCTL_NORMAL;
+		trb->ctrl = DWC3_TRBCTL_NORMAL;
 		break;
 	default:
 		/*
@@ -647,11 +732,21 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
 		BUG();
 	}
 
-	trb.length	= length;
-	trb.bplh	= dma;
-	trb.hwo		= true;
+	if (usb_endpoint_xfer_isoc(dep->desc)) {
+		trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;
+		trb->ctrl |= DWC3_TRB_CTRL_CSP;
+	} else {
+		if (chain)
+			trb->ctrl |= DWC3_TRB_CTRL_CHN;
+
+		if (last)
+			trb->ctrl |= DWC3_TRB_CTRL_LST;
+	}
 
-	dwc3_trb_to_hw(&trb, trb_hw);
+	if (usb_endpoint_xfer_bulk(dep->desc) && dep->stream_capable)
+		trb->ctrl |= DWC3_TRB_CTRL_SID_SOFN(req->request.stream_id);
+
+	trb->ctrl |= DWC3_TRB_CTRL_HWO;
 }
 
 /*
@@ -659,14 +754,15 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
  * @dep: endpoint for which requests are being prepared
  * @starting: true if the endpoint is idle and no requests are queued.
  *
- * The functions goes through the requests list and setups TRBs for the
- * transfers. The functions returns once there are not more TRBs available or
- * it run out of requests.
+ * The function goes through the requests list and sets up TRBs for the
+ * transfers. The function returns once there are no more TRBs available or
+ * it runs out of requests.
  */
 static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting)
 {
 	struct dwc3_request	*req, *n;
 	u32			trbs_left;
+	u32			max;
 	unsigned int		last_one = 0;
 
 	BUILD_BUG_ON_NOT_POWER_OF_2(DWC3_TRB_NUM);
@@ -674,9 +770,16 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting)
 	/* the first request must not be queued */
 	trbs_left = (dep->busy_slot - dep->free_slot) & DWC3_TRB_MASK;
 
+	/* Can't wrap around on a non-isoc EP since there's no link TRB */
+	if (!usb_endpoint_xfer_isoc(dep->desc)) {
+		max = DWC3_TRB_NUM - (dep->free_slot & DWC3_TRB_MASK);
+		if (trbs_left > max)
+			trbs_left = max;
+	}
+
 	/*
-	 * if busy & slot are equal than it is either full or empty. If we are
-	 * starting to proceed requests then we are empty. Otherwise we ar
+	 * If busy & slot are equal than it is either full or empty. If we are
+	 * starting to process requests then we are empty. Otherwise we are
 	 * full and don't do anything
 	 */
 	if (!trbs_left) {
@@ -687,7 +790,7 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting)
 		 * In case we start from scratch, we queue the ISOC requests
 		 * starting from slot 1. This is done because we use ring
 		 * buffer and have no LST bit to stop us. Instead, we place
-		 * IOC bit TRB_NUM/4. We try to avoid to having an interrupt
+		 * IOC bit every TRB_NUM/4. We try to avoid having an interrupt
 		 * after the first request so we start at slot 1 and have
 		 * 7 requests proceed before we hit the first IOC.
 		 * Other transfer types don't use the ring buffer and are
@@ -723,8 +826,8 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting)
 				length = sg_dma_len(s);
 				dma = sg_dma_address(s);
 
-				if (i == (request->num_mapped_sgs - 1)
-						|| sg_is_last(s)) {
+				if (i == (request->num_mapped_sgs - 1) ||
+						sg_is_last(s)) {
 					last_one = true;
 					chain = false;
 				}
@@ -792,8 +895,7 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param,
 		dwc3_prepare_trbs(dep, start_new);
 
 		/*
-		 * req points to the first request where HWO changed
-		 * from 0 to 1
+		 * req points to the first request where HWO changed from 0 to 1
 		 */
 		req = next_request(&dep->req_queued);
 	}
@@ -819,9 +921,10 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param,
 		/*
 		 * FIXME we need to iterate over the list of requests
 		 * here and stop, unmap, free and del each of the linked
-		 * requests instead of we do now.
+		 * requests instead of what we do now.
 		 */
-		dwc3_unmap_buffer_from_dma(req);
+		usb_gadget_unmap_request(&dwc->gadget, &req->request,
+				req->direction);
 		list_del(&req->list);
 		return ret;
 	}
@@ -837,6 +940,9 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param,
 
 static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
 {
+	struct dwc3		*dwc = dep->dwc;
+	int			ret;
+
 	req->request.actual	= 0;
 	req->request.status	= -EINPROGRESS;
 	req->direction		= dep->direction;
@@ -852,9 +958,13 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
 	 * particular token from the Host side.
 	 *
 	 * This will also avoid Host cancelling URBs due to too
-	 * many NACKs.
+	 * many NAKs.
 	 */
-	dwc3_map_buffer_to_dma(req);
+	ret = usb_gadget_map_request(&dwc->gadget, &req->request,
+			dep->direction);
+	if (ret)
+		return ret;
+
 	list_add_tail(&req->list, &dep->request_list);
 
 	/*
@@ -874,11 +984,11 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
 		int start_trans;
 
 		start_trans = 1;
-		if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
-				dep->flags & DWC3_EP_BUSY)
+		if (usb_endpoint_xfer_isoc(dep->desc) &&
+				(dep->flags & DWC3_EP_BUSY))
 			start_trans = 0;
 
-		ret =  __dwc3_gadget_kick_transfer(dep, 0, start_trans);
+		ret = __dwc3_gadget_kick_transfer(dep, 0, start_trans);
 		if (ret && ret != -EBUSY) {
 			struct dwc3	*dwc = dep->dwc;
 
@@ -1031,8 +1141,12 @@ out:
 static int dwc3_gadget_ep_set_wedge(struct usb_ep *ep)
 {
 	struct dwc3_ep			*dep = to_dwc3_ep(ep);
+	struct dwc3			*dwc = dep->dwc;
+	unsigned long			flags;
 
+	spin_lock_irqsave(&dwc->lock, flags);
 	dep->flags |= DWC3_EP_WEDGE;
+	spin_unlock_irqrestore(&dwc->lock, flags);
 
 	return dwc3_gadget_ep_set_halt(ep, 1);
 }
@@ -1122,26 +1236,20 @@ static int dwc3_gadget_wakeup(struct usb_gadget *g)
 		goto out;
 	}
 
-	reg = dwc3_readl(dwc->regs, DWC3_DCTL);
-
-	/*
-	 * Switch link state to Recovery. In HS/FS/LS this means
-	 * RemoteWakeup Request
-	 */
-	reg |= DWC3_DCTL_ULSTCHNG_RECOVERY;
-	dwc3_writel(dwc->regs, DWC3_DCTL, reg);
-
-	/* wait for at least 2000us */
-	usleep_range(2000, 2500);
+	ret = dwc3_gadget_set_link_state(dwc, DWC3_LINK_STATE_RECOV);
+	if (ret < 0) {
+		dev_err(dwc->dev, "failed to put link in Recovery\n");
+		goto out;
+	}
 
 	/* write zeroes to Link Change Request */
 	reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
 	dwc3_writel(dwc->regs, DWC3_DCTL, reg);
 
-	/* pool until Link State change to ON */
+	/* poll until Link State changes to ON */
 	timeout = jiffies + msecs_to_jiffies(100);
 
-	while (!(time_after(jiffies, timeout))) {
+	while (!time_after(jiffies, timeout)) {
 		reg = dwc3_readl(dwc->regs, DWC3_DSTS);
 
 		/* in HS, means ON */
@@ -1164,8 +1272,11 @@ static int dwc3_gadget_set_selfpowered(struct usb_gadget *g,
 		int is_selfpowered)
 {
 	struct dwc3		*dwc = gadget_to_dwc(g);
+	unsigned long		flags;
 
+	spin_lock_irqsave(&dwc->lock, flags);
 	dwc->is_selfpowered = !!is_selfpowered;
+	spin_unlock_irqrestore(&dwc->lock, flags);
 
 	return 0;
 }
@@ -1176,10 +1287,13 @@ static void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on)
 	u32			timeout = 500;
 
 	reg = dwc3_readl(dwc->regs, DWC3_DCTL);
-	if (is_on)
-		reg |= DWC3_DCTL_RUN_STOP;
-	else
+	if (is_on) {
+		reg &= ~DWC3_DCTL_TRGTULST_MASK;
+		reg |= (DWC3_DCTL_RUN_STOP
+				| DWC3_DCTL_TRGTULST_RX_DET);
+	} else {
 		reg &= ~DWC3_DCTL_RUN_STOP;
+	}
 
 	dwc3_writel(dwc->regs, DWC3_DCTL, reg);
 
@@ -1386,7 +1500,7 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
 		const struct dwc3_event_depevt *event, int status)
 {
 	struct dwc3_request	*req;
-	struct dwc3_trb         trb;
+	struct dwc3_trb		*trb;
 	unsigned int		count;
 	unsigned int		s_pkt = 0;
 
@@ -1397,20 +1511,20 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
 			return 1;
 		}
 
-		dwc3_trb_to_nat(req->trb, &trb);
+		trb = req->trb;
 
-		if (trb.hwo && status != -ESHUTDOWN)
+		if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN)
 			/*
 			 * We continue despite the error. There is not much we
-			 * can do. If we don't clean in up we loop for ever. If
-			 * we skip the TRB than it gets overwritten reused after
-			 * a while since we use them in a ring buffer. a BUG()
-			 * would help. Lets hope that if this occures, someone
+			 * can do. If we don't clean it up we loop forever. If
+			 * we skip the TRB then it gets overwritten after a
+			 * while since we use them in a ring buffer. A BUG()
+			 * would help. Lets hope that if this occurs, someone
 			 * fixes the root cause instead of looking away :)
 			 */
 			dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n",
 					dep->name, req->trb);
-		count = trb.length;
+		count = trb->size & DWC3_TRB_SIZE_MASK;
 
 		if (dep->direction) {
 			if (count) {
@@ -1434,13 +1548,16 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
 		dwc3_gadget_giveback(dep, req, status);
 		if (s_pkt)
 			break;
-		if ((event->status & DEPEVT_STATUS_LST) && trb.lst)
+		if ((event->status & DEPEVT_STATUS_LST) &&
+				(trb->ctrl & DWC3_TRB_CTRL_LST))
 			break;
-		if ((event->status & DEPEVT_STATUS_IOC) && trb.ioc)
+		if ((event->status & DEPEVT_STATUS_IOC) &&
+				(trb->ctrl & DWC3_TRB_CTRL_IOC))
 			break;
 	} while (1);
 
-	if ((event->status & DEPEVT_STATUS_IOC) && trb.ioc)
+	if ((event->status & DEPEVT_STATUS_IOC) &&
+			(trb->ctrl & DWC3_TRB_CTRL_IOC))
 		return 0;
 	return 1;
 }
@@ -1455,11 +1572,9 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc,
 	if (event->status & DEPEVT_STATUS_BUSERR)
 		status = -ECONNRESET;
 
-	clean_busy =  dwc3_cleanup_done_reqs(dwc, dep, event, status);
-	if (clean_busy) {
+	clean_busy = dwc3_cleanup_done_reqs(dwc, dep, event, status);
+	if (clean_busy)
 		dep->flags &= ~DWC3_EP_BUSY;
-		dep->res_trans_idx = 0;
-	}
 
 	/*
 	 * WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround.
@@ -1490,7 +1605,7 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc,
 static void dwc3_gadget_start_isoc(struct dwc3 *dwc,
 		struct dwc3_ep *dep, const struct dwc3_event_depevt *event)
 {
-	u32 uf;
+	u32 uf, mask;
 
 	if (list_empty(&dep->request_list)) {
 		dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n",
@@ -1498,16 +1613,10 @@ static void dwc3_gadget_start_isoc(struct dwc3 *dwc,
 		return;
 	}
 
-	if (event->parameters) {
-		u32 mask;
-
-		mask = ~(dep->interval - 1);
-		uf = event->parameters & mask;
-		/* 4 micro frames in the future */
-		uf += dep->interval * 4;
-	} else {
-		uf = 0;
-	}
+	mask = ~(dep->interval - 1);
+	uf = event->parameters & mask;
+	/* 4 micro frames in the future */
+	uf += dep->interval * 4;
 
 	__dwc3_gadget_kick_transfer(dep, uf, 1);
 }
@@ -1519,8 +1628,8 @@ static void dwc3_process_ep_cmd_complete(struct dwc3_ep *dep,
 	struct dwc3_event_depevt mod_ev = *event;
 
 	/*
-	 * We were asked to remove one requests. It is possible that this
-	 * request and a few other were started together and have the same
+	 * We were asked to remove one request. It is possible that this
+	 * request and a few others were started together and have the same
 	 * transfer index. Since we stopped the complete endpoint we don't
 	 * know how many requests were already completed (and not yet)
 	 * reported and how could be done (later). We purge them all until
@@ -1529,7 +1638,7 @@ static void dwc3_process_ep_cmd_complete(struct dwc3_ep *dep,
 	mod_ev.status = DEPEVT_STATUS_LST;
 	dwc3_cleanup_done_reqs(dwc, dep, &mod_ev, -ESHUTDOWN);
 	dep->flags &= ~DWC3_EP_BUSY;
-	/* pending requets are ignored and are queued on XferNotReady */
+	/* pending requests are ignored and are queued on XferNotReady */
 }
 
 static void dwc3_ep_cmd_compl(struct dwc3_ep *dep,
@@ -1570,6 +1679,8 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
 
 	switch (event->endpoint_event) {
 	case DWC3_DEPEVT_XFERCOMPLETE:
+		dep->res_trans_idx = 0;
+
 		if (usb_endpoint_xfer_isoc(dep->desc)) {
 			dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n",
 					dep->name);
@@ -1594,7 +1705,8 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
 			int ret;
 
 			dev_vdbg(dwc->dev, "%s: reason %s\n",
-					dep->name, event->status
+					dep->name, event->status &
+					DEPEVT_STATUS_TRANSFER_ACTIVE
 					? "Transfer Active"
 					: "Transfer Not Active");
 
@@ -1805,6 +1917,7 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
 	reg = dwc3_readl(dwc->regs, DWC3_DCTL);
 	reg &= ~DWC3_DCTL_TSTCTRL_MASK;
 	dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+	dwc->test_mode = false;
 
 	dwc3_stop_active_transfers(dwc);
 	dwc3_clear_stall_all_ep(dwc);
@@ -2082,7 +2195,8 @@ static irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc, u32 buf)
 	while (left > 0) {
 		union dwc3_event event;
 
-		memcpy(&event.raw, (evt->buf + evt->lpos), sizeof(event.raw));
+		event.raw = *(u32 *) (evt->buf + evt->lpos);
+
 		dwc3_process_event_entry(dwc, &event);
 		/*
 		 * XXX we wrap around correctly to the next entry as almost all
@@ -2123,7 +2237,7 @@ static irqreturn_t dwc3_interrupt(int irq, void *_dwc)
 
 /**
  * dwc3_gadget_init - Initializes gadget related registers
- * @dwc: Pointer to out controller context structure
+ * @dwc: pointer to our controller context structure
  *
  * Returns 0 on success otherwise negative errno.
  */
@@ -2149,9 +2263,8 @@ int __devinit dwc3_gadget_init(struct dwc3 *dwc)
 		goto err1;
 	}
 
-	dwc->setup_buf = dma_alloc_coherent(dwc->dev,
-			sizeof(*dwc->setup_buf) * 2,
-			&dwc->setup_buf_addr, GFP_KERNEL);
+	dwc->setup_buf = kzalloc(sizeof(*dwc->setup_buf) * 2,
+			GFP_KERNEL);
 	if (!dwc->setup_buf) {
 		dev_err(dwc->dev, "failed to allocate setup buffer\n");
 		ret = -ENOMEM;
@@ -2242,8 +2355,7 @@ err4:
 			dwc->ep0_bounce_addr);
 
 err3:
-	dma_free_coherent(dwc->dev, sizeof(*dwc->setup_buf) * 2,
-			dwc->setup_buf, dwc->setup_buf_addr);
+	kfree(dwc->setup_buf);
 
 err2:
 	dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb),
@@ -2272,8 +2384,7 @@ void dwc3_gadget_exit(struct dwc3 *dwc)
 	dma_free_coherent(dwc->dev, 512, dwc->ep0_bounce,
 			dwc->ep0_bounce_addr);
 
-	dma_free_coherent(dwc->dev, sizeof(*dwc->setup_buf) * 2,
-			dwc->setup_buf, dwc->setup_buf_addr);
+	kfree(dwc->setup_buf);
 
 	dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb),
 			dwc->ep0_trb, dwc->ep0_trb_addr);

drivers/usb/dwc3/gadget.h

@@ -100,6 +100,9 @@ static inline void dwc3_gadget_move_request_queued(struct dwc3_request *req)
 void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
 		int status);
 
+int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode);
+int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state);
+
 void dwc3_ep0_interrupt(struct dwc3 *dwc,
 		const struct dwc3_event_depevt *event);
 void dwc3_ep0_out_start(struct dwc3 *dwc);
@@ -108,8 +111,6 @@ int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
 int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value);
 int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 		unsigned cmd, struct dwc3_gadget_ep_cmd_params *params);
-void dwc3_map_buffer_to_dma(struct dwc3_request *req);
-void dwc3_unmap_buffer_from_dma(struct dwc3_request *req);
 
 /**
  * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW

drivers/usb/dwc3/host.c

@@ -53,7 +53,7 @@ int dwc3_host_init(struct dwc3 *dwc)
 	struct platform_device	*xhci;
 	int			ret;
 
-	xhci = platform_device_alloc("xhci", -1);
+	xhci = platform_device_alloc("xhci-hcd", -1);
 	if (!xhci) {
 		dev_err(dwc->dev, "couldn't allocate xHCI device\n");
 		ret = -ENOMEM;

drivers/usb/gadget/Kconfig

@@ -599,16 +599,29 @@ config USB_AUDIO
 	depends on SND
 	select SND_PCM
 	help
-	  Gadget Audio is compatible with USB Audio Class specification 1.0.
-	  It will include at least one AudioControl interface, zero or more
-	  AudioStream interface and zero or more MIDIStream interface.
-
-	  Gadget Audio will use on-board ALSA (CONFIG_SND) audio card to
-	  playback or capture audio stream.
+	  This Gadget Audio driver is compatible with USB Audio Class
+	  specification 2.0. It implements 1 AudioControl interface,
+	  1 AudioStreaming Interface each for USB-OUT and USB-IN.
+	  Number of channels, sample rate and sample size can be
+	  specified as module parameters.
+	  This driver doesn't expect any real Audio codec to be present
+	  on the device - the audio streams are simply sinked to and
+	  sourced from a virtual ALSA sound card created. The user-space
+	  application may choose to do whatever it wants with the data
+	  received from the USB Host and choose to provide whatever it
+	  wants as audio data to the USB Host.
 
 	  Say "y" to link the driver statically, or "m" to build a
 	  dynamically linked module called "g_audio".
 
+config GADGET_UAC1
+	bool "UAC 1.0 (Legacy)"
+	depends on USB_AUDIO
+	help
+	  If you instead want older UAC Spec-1.0 driver that also has audio
+	  paths hardwired to the Audio codec chip on-board and doesn't work
+	  without one.
+
 config USB_ETH
 	tristate "Ethernet Gadget (with CDC Ethernet support)"
 	depends on NET

drivers/usb/gadget/amd5536udc.c

@@ -29,7 +29,7 @@
 
 /* Driver strings */
 #define UDC_MOD_DESCRIPTION		"AMD 5536 UDC - USB Device Controller"
-#define UDC_DRIVER_VERSION_STRING	"01.00.0206 - $Revision: #3 $"
+#define UDC_DRIVER_VERSION_STRING	"01.00.0206"
 
 /* system */
 #include <linux/module.h>
@@ -140,7 +140,7 @@ static DECLARE_TASKLET(disconnect_tasklet, udc_tasklet_disconnect,
 
 /* endpoint names used for print */
 static const char ep0_string[] = "ep0in";
-static const char *ep_string[] = {
+static const char *const ep_string[] = {
 	ep0_string,
 	"ep1in-int", "ep2in-bulk", "ep3in-bulk", "ep4in-bulk", "ep5in-bulk",
 	"ep6in-bulk", "ep7in-bulk", "ep8in-bulk", "ep9in-bulk", "ep10in-bulk",
@@ -204,9 +204,8 @@ static void print_regs(struct udc *dev)
 		DBG(dev, "DMA mode       = BF (buffer fill mode)\n");
 		dev_info(&dev->pdev->dev, "DMA mode (%s)\n", "BF");
 	}
-	if (!use_dma) {
+	if (!use_dma)
 		dev_info(&dev->pdev->dev, "FIFO mode\n");
-	}
 	DBG(dev, "-------------------------------------------------------\n");
 }
 
@@ -445,6 +444,7 @@ static void ep_init(struct udc_regs __iomem *regs, struct udc_ep *ep)
 
 	VDBG(ep->dev, "ep-%d reset\n", ep->num);
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 	ep->ep.ops = &udc_ep_ops;
 	INIT_LIST_HEAD(&ep->queue);
 
@@ -569,9 +569,8 @@ udc_free_request(struct usb_ep *usbep, struct usb_request *usbreq)
 		VDBG(ep->dev, "req->td_data=%p\n", req->td_data);
 
 		/* free dma chain if created */
-		if (req->chain_len > 1) {
+		if (req->chain_len > 1)
 			udc_free_dma_chain(ep->dev, req);
-		}
 
 		pci_pool_free(ep->dev->data_requests, req->td_data,
 							req->td_phys);
@@ -639,9 +638,8 @@ udc_txfifo_write(struct udc_ep *ep, struct usb_request *req)
 		bytes = remaining;
 
 	/* dwords first */
-	for (i = 0; i < bytes / UDC_DWORD_BYTES; i++) {
+	for (i = 0; i < bytes / UDC_DWORD_BYTES; i++)
 		writel(*(buf + i), ep->txfifo);
-	}
 
 	/* remaining bytes must be written by byte access */
 	for (j = 0; j < bytes % UDC_DWORD_BYTES; j++) {
@@ -660,9 +658,8 @@ static int udc_rxfifo_read_dwords(struct udc *dev, u32 *buf, int dwords)
 
 	VDBG(dev, "udc_read_dwords(): %d dwords\n", dwords);
 
-	for (i = 0; i < dwords; i++) {
+	for (i = 0; i < dwords; i++)
 		*(buf + i) = readl(dev->rxfifo);
-	}
 	return 0;
 }
 
@@ -675,9 +672,8 @@ static int udc_rxfifo_read_bytes(struct udc *dev, u8 *buf, int bytes)
 	VDBG(dev, "udc_read_bytes(): %d bytes\n", bytes);
 
 	/* dwords first */
-	for (i = 0; i < bytes / UDC_DWORD_BYTES; i++) {
+	for (i = 0; i < bytes / UDC_DWORD_BYTES; i++)
 		*((u32 *)(buf + (i<<2))) = readl(dev->rxfifo);
-	}
 
 	/* remaining bytes must be read by byte access */
 	if (bytes % UDC_DWORD_BYTES) {
@@ -831,20 +827,8 @@ __acquires(ep->dev->lock)
 
 	dev = ep->dev;
 	/* unmap DMA */
-	if (req->dma_mapping) {
-		if (ep->in)
-			pci_unmap_single(dev->pdev,
-					req->req.dma,
-					req->req.length,
-					PCI_DMA_TODEVICE);
-		else
-			pci_unmap_single(dev->pdev,
-					req->req.dma,
-					req->req.length,
-					PCI_DMA_FROMDEVICE);
-		req->dma_mapping = 0;
-		req->req.dma = DMA_DONT_USE;
-	}
+	if (ep->dma)
+		usb_gadget_unmap_request(&dev->gadget, &req->req, ep->in);
 
 	halted = ep->halted;
 	ep->halted = 1;
@@ -897,9 +881,8 @@ static struct udc_data_dma *udc_get_last_dma_desc(struct udc_request *req)
 	struct udc_data_dma	*td;
 
 	td = req->td_data;
-	while (td && !(td->status & AMD_BIT(UDC_DMA_IN_STS_L))) {
+	while (td && !(td->status & AMD_BIT(UDC_DMA_IN_STS_L)))
 		td = phys_to_virt(td->next);
-	}
 
 	return td;
 
@@ -949,21 +932,18 @@ static int udc_create_dma_chain(
 	dma_addr = DMA_DONT_USE;
 
 	/* unset L bit in first desc for OUT */
-	if (!ep->in) {
+	if (!ep->in)
 		req->td_data->status &= AMD_CLEAR_BIT(UDC_DMA_IN_STS_L);
-	}
 
 	/* alloc only new desc's if not already available */
 	len = req->req.length / ep->ep.maxpacket;
-	if (req->req.length % ep->ep.maxpacket) {
+	if (req->req.length % ep->ep.maxpacket)
 		len++;
-	}
 
 	if (len > req->chain_len) {
 		/* shorter chain already allocated before */
-		if (req->chain_len > 1) {
+		if (req->chain_len > 1)
 			udc_free_dma_chain(ep->dev, req);
-		}
 		req->chain_len = len;
 		create_new_chain = 1;
 	}
@@ -1006,11 +986,12 @@ static int udc_create_dma_chain(
 
 		/* link td and assign tx bytes */
 		if (i == buf_len) {
-			if (create_new_chain) {
+			if (create_new_chain)
 				req->td_data->next = dma_addr;
-			} else {
-				/* req->td_data->next = virt_to_phys(td); */
-			}
+			/*
+			else
+				req->td_data->next = virt_to_phys(td);
+			*/
 			/* write tx bytes */
 			if (ep->in) {
 				/* first desc */
@@ -1024,11 +1005,12 @@ static int udc_create_dma_chain(
 							UDC_DMA_IN_STS_TXBYTES);
 			}
 		} else {
-			if (create_new_chain) {
+			if (create_new_chain)
 				last->next = dma_addr;
-			} else {
-				/* last->next = virt_to_phys(td); */
-			}
+			/*
+			else
+				last->next = virt_to_phys(td);
+			*/
 			if (ep->in) {
 				/* write tx bytes */
 				td->status = AMD_ADDBITS(td->status,
@@ -1095,20 +1077,11 @@ udc_queue(struct usb_ep *usbep, struct usb_request *usbreq, gfp_t gfp)
 		return -ESHUTDOWN;
 
 	/* map dma (usually done before) */
-	if (ep->dma && usbreq->length != 0
-			&& (usbreq->dma == DMA_DONT_USE || usbreq->dma == 0)) {
+	if (ep->dma) {
 		VDBG(dev, "DMA map req %p\n", req);
-		if (ep->in)
-			usbreq->dma = pci_map_single(dev->pdev,
-						usbreq->buf,
-						usbreq->length,
-						PCI_DMA_TODEVICE);
-		else
-			usbreq->dma = pci_map_single(dev->pdev,
-						usbreq->buf,
-						usbreq->length,
-						PCI_DMA_FROMDEVICE);
-		req->dma_mapping = 1;
+		retval = usb_gadget_map_request(&udc->gadget, usbreq, ep->in);
+		if (retval)
+			return retval;
 	}
 
 	VDBG(dev, "%s queue req %p, len %d req->td_data=%p buf %p\n",
@@ -1479,11 +1452,10 @@ static int startup_registers(struct udc *dev)
 
 	/* program speed */
 	tmp = readl(&dev->regs->cfg);
-	if (use_fullspeed) {
+	if (use_fullspeed)
 		tmp = AMD_ADDBITS(tmp, UDC_DEVCFG_SPD_FS, UDC_DEVCFG_SPD);
-	} else {
+	else
 		tmp = AMD_ADDBITS(tmp, UDC_DEVCFG_SPD_HS, UDC_DEVCFG_SPD);
-	}
 	writel(tmp, &dev->regs->cfg);
 
 	return 0;
@@ -1504,9 +1476,8 @@ static void udc_basic_init(struct udc *dev)
 		mod_timer(&udc_timer, jiffies - 1);
 	}
 	/* stop poll stall timer */
-	if (timer_pending(&udc_pollstall_timer)) {
+	if (timer_pending(&udc_pollstall_timer))
 		mod_timer(&udc_pollstall_timer, jiffies - 1);
-	}
 	/* disable DMA */
 	tmp = readl(&dev->regs->ctl);
 	tmp &= AMD_UNMASK_BIT(UDC_DEVCTL_RDE);
@@ -1540,11 +1511,10 @@ static void udc_setup_endpoints(struct udc *dev)
 	/* read enum speed */
 	tmp = readl(&dev->regs->sts);
 	tmp = AMD_GETBITS(tmp, UDC_DEVSTS_ENUM_SPEED);
-	if (tmp == UDC_DEVSTS_ENUM_SPEED_HIGH) {
+	if (tmp == UDC_DEVSTS_ENUM_SPEED_HIGH)
 		dev->gadget.speed = USB_SPEED_HIGH;
-	} else if (tmp == UDC_DEVSTS_ENUM_SPEED_FULL) {
+	else if (tmp == UDC_DEVSTS_ENUM_SPEED_FULL)
 		dev->gadget.speed = USB_SPEED_FULL;
-	}
 
 	/* set basic ep parameters */
 	for (tmp = 0; tmp < UDC_EP_NUM; tmp++) {
@@ -1570,9 +1540,8 @@ static void udc_setup_endpoints(struct udc *dev)
 		 * disabling ep interrupts when ENUM interrupt occurs but ep is
 		 * not enabled by gadget driver
 		 */
-		if (!ep->desc) {
+		if (!ep->desc)
 			ep_init(dev->regs, ep);
-		}
 
 		if (use_dma) {
 			/*
@@ -1670,9 +1639,8 @@ static void udc_tasklet_disconnect(unsigned long par)
 		spin_lock(&dev->lock);
 
 		/* empty queues */
-		for (tmp = 0; tmp < UDC_EP_NUM; tmp++) {
+		for (tmp = 0; tmp < UDC_EP_NUM; tmp++)
 			empty_req_queue(&dev->ep[tmp]);
-		}
 
 	}
 
@@ -1746,9 +1714,8 @@ static void udc_timer_function(unsigned long v)
 			 * open the fifo
 			 */
 			udc_timer.expires = jiffies + HZ/UDC_RDE_TIMER_DIV;
-			if (!stop_timer) {
+			if (!stop_timer)
 				add_timer(&udc_timer);
-			}
 		} else {
 			/*
 			 * fifo contains data now, setup timer for opening
@@ -1760,9 +1727,8 @@ static void udc_timer_function(unsigned long v)
 			set_rde++;
 			/* debug: lhadmot_timer_start = 221070 */
 			udc_timer.expires = jiffies + HZ*UDC_RDE_TIMER_SECONDS;
-			if (!stop_timer) {
+			if (!stop_timer)
 				add_timer(&udc_timer);
-			}
 		}
 
 	} else
@@ -1907,19 +1873,17 @@ static void activate_control_endpoints(struct udc *dev)
 			mod_timer(&udc_timer, jiffies - 1);
 		}
 		/* stop pollstall timer */
-		if (timer_pending(&udc_pollstall_timer)) {
+		if (timer_pending(&udc_pollstall_timer))
 			mod_timer(&udc_pollstall_timer, jiffies - 1);
-		}
 		/* enable DMA */
 		tmp = readl(&dev->regs->ctl);
 		tmp |= AMD_BIT(UDC_DEVCTL_MODE)
 				| AMD_BIT(UDC_DEVCTL_RDE)
 				| AMD_BIT(UDC_DEVCTL_TDE);
-		if (use_dma_bufferfill_mode) {
+		if (use_dma_bufferfill_mode)
 			tmp |= AMD_BIT(UDC_DEVCTL_BF);
-		} else if (use_dma_ppb_du) {
+		else if (use_dma_ppb_du)
 			tmp |= AMD_BIT(UDC_DEVCTL_DU);
-		}
 		writel(tmp, &dev->regs->ctl);
 	}
 
@@ -2104,9 +2068,8 @@ static void udc_ep0_set_rde(struct udc *dev)
 				udc_timer.expires =
 					jiffies + HZ/UDC_RDE_TIMER_DIV;
 				set_rde = 1;
-				if (!stop_timer) {
+				if (!stop_timer)
 					add_timer(&udc_timer);
-				}
 			}
 		}
 	}
@@ -2131,7 +2094,7 @@ static irqreturn_t udc_data_out_isr(struct udc *dev, int ep_ix)
 	if (use_dma) {
 		/* BNA event ? */
 		if (tmp & AMD_BIT(UDC_EPSTS_BNA)) {
-			DBG(dev, "BNA ep%dout occurred - DESPTR = %x \n",
+			DBG(dev, "BNA ep%dout occurred - DESPTR = %x\n",
 					ep->num, readl(&ep->regs->desptr));
 			/* clear BNA */
 			writel(tmp | AMD_BIT(UDC_EPSTS_BNA), &ep->regs->sts);
@@ -2294,9 +2257,8 @@ static irqreturn_t udc_data_out_isr(struct udc *dev, int ep_ix)
 						jiffies
 						+ HZ*UDC_RDE_TIMER_SECONDS;
 					set_rde = 1;
-					if (!stop_timer) {
+					if (!stop_timer)
 						add_timer(&udc_timer);
-					}
 				}
 				if (ep->num != UDC_EP0OUT_IX)
 					dev->data_ep_queued = 0;
@@ -2318,9 +2280,8 @@ static irqreturn_t udc_data_out_isr(struct udc *dev, int ep_ix)
 	/* check pending CNAKS */
 	if (cnak_pending) {
 		/* CNAk processing when rxfifo empty only */
-		if (readl(&dev->regs->sts) & AMD_BIT(UDC_DEVSTS_RXFIFO_EMPTY)) {
+		if (readl(&dev->regs->sts) & AMD_BIT(UDC_DEVSTS_RXFIFO_EMPTY))
 			udc_process_cnak_queue(dev);
-		}
 	}
 
 	/* clear OUT bits in ep status */
@@ -2348,7 +2309,7 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix)
 		/* BNA ? */
 		if (epsts & AMD_BIT(UDC_EPSTS_BNA)) {
 			dev_err(&dev->pdev->dev,
-				"BNA ep%din occurred - DESPTR = %08lx \n",
+				"BNA ep%din occurred - DESPTR = %08lx\n",
 				ep->num,
 				(unsigned long) readl(&ep->regs->desptr));
 
@@ -2361,7 +2322,7 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix)
 	/* HE event ? */
 	if (epsts & AMD_BIT(UDC_EPSTS_HE)) {
 		dev_err(&dev->pdev->dev,
-			"HE ep%dn occurred - DESPTR = %08lx \n",
+			"HE ep%dn occurred - DESPTR = %08lx\n",
 			ep->num, (unsigned long) readl(&ep->regs->desptr));
 
 		/* clear HE */
@@ -2427,9 +2388,9 @@ static irqreturn_t udc_data_in_isr(struct udc *dev, int ep_ix)
 				/* write fifo */
 				udc_txfifo_write(ep, &req->req);
 				len = req->req.length - req->req.actual;
-						if (len > ep->ep.maxpacket)
-							len = ep->ep.maxpacket;
-						req->req.actual += len;
+				if (len > ep->ep.maxpacket)
+					len = ep->ep.maxpacket;
+				req->req.actual += len;
 				if (req->req.actual == req->req.length
 					|| (len != ep->ep.maxpacket)) {
 					/* complete req */
@@ -2581,9 +2542,8 @@ __acquires(dev->lock)
 			if (!timer_pending(&udc_timer)) {
 				udc_timer.expires = jiffies +
 							HZ/UDC_RDE_TIMER_DIV;
-				if (!stop_timer) {
+				if (!stop_timer)
 					add_timer(&udc_timer);
-				}
 			}
 		}
 
@@ -2697,9 +2657,8 @@ __acquires(dev->lock)
 	/* check pending CNAKS */
 	if (cnak_pending) {
 		/* CNAk processing when rxfifo empty only */
-		if (readl(&dev->regs->sts) & AMD_BIT(UDC_DEVSTS_RXFIFO_EMPTY)) {
+		if (readl(&dev->regs->sts) & AMD_BIT(UDC_DEVSTS_RXFIFO_EMPTY))
 			udc_process_cnak_queue(dev);
-		}
 	}
 
 finished:
@@ -2723,7 +2682,7 @@ static irqreturn_t udc_control_in_isr(struct udc *dev)
 	tmp = readl(&dev->ep[UDC_EP0IN_IX].regs->sts);
 	/* DMA completion */
 	if (tmp & AMD_BIT(UDC_EPSTS_TDC)) {
-		VDBG(dev, "isr: TDC clear \n");
+		VDBG(dev, "isr: TDC clear\n");
 		ret_val = IRQ_HANDLED;
 
 		/* clear TDC bit */
@@ -3426,7 +3385,7 @@ static int udc_remote_wakeup(struct udc *dev)
 }
 
 /* PCI device parameters */
-static const struct pci_device_id pci_id[] = {
+static DEFINE_PCI_DEVICE_TABLE(pci_id) = {
 	{
 		PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x2096),
 		.class =	(PCI_CLASS_SERIAL_USB << 8) | 0xfe,

drivers/usb/gadget/at91_udc.c

@@ -29,7 +29,6 @@
 #include <linux/clk.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
-#include <linux/prefetch.h>
 
 #include <asm/byteorder.h>
 #include <mach/hardware.h>
@@ -558,6 +557,7 @@ static int at91_ep_disable (struct usb_ep * _ep)
 
 	/* restore the endpoint's pristine config */
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 	ep->ep.maxpacket = ep->maxpacket;
 
 	/* reset fifos and endpoint */

drivers/usb/gadget/atmel_usba_udc.c

@@ -659,6 +659,7 @@ static int usba_ep_disable(struct usb_ep *_ep)
 		return -EINVAL;
 	}
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 
 	list_splice_init(&ep->queue, &req_list);
 	if (ep->can_dma) {

drivers/usb/gadget/audio.c

@@ -14,10 +14,8 @@
 #include <linux/kernel.h>
 #include <linux/utsname.h>
 
-#include "u_audio.h"
-
 #define DRIVER_DESC		"Linux USB Audio Gadget"
-#define DRIVER_VERSION		"Dec 18, 2008"
+#define DRIVER_VERSION		"Feb 2, 2012"
 
 /*-------------------------------------------------------------------------*/
 
@@ -33,8 +31,36 @@
 #include "config.c"
 #include "epautoconf.c"
 
-#include "u_audio.c"
-#include "f_audio.c"
+/* string IDs are assigned dynamically */
+
+#define STRING_MANUFACTURER_IDX		0
+#define STRING_PRODUCT_IDX		1
+
+static char manufacturer[50];
+
+static struct usb_string strings_dev[] = {
+	[STRING_MANUFACTURER_IDX].s = manufacturer,
+	[STRING_PRODUCT_IDX].s = DRIVER_DESC,
+	{  } /* end of list */
+};
+
+static struct usb_gadget_strings stringtab_dev = {
+	.language = 0x0409,	/* en-us */
+	.strings = strings_dev,
+};
+
+static struct usb_gadget_strings *audio_strings[] = {
+	&stringtab_dev,
+	NULL,
+};
+
+#ifdef CONFIG_GADGET_UAC1
+#include "u_uac1.h"
+#include "u_uac1.c"
+#include "f_uac1.c"
+#else
+#include "f_uac2.c"
+#endif
 
 /*-------------------------------------------------------------------------*/
 
@@ -54,9 +80,15 @@ static struct usb_device_descriptor device_desc = {
 
 	.bcdUSB =		__constant_cpu_to_le16(0x200),
 
+#ifdef CONFIG_GADGET_UAC1
 	.bDeviceClass =		USB_CLASS_PER_INTERFACE,
 	.bDeviceSubClass =	0,
 	.bDeviceProtocol =	0,
+#else
+	.bDeviceClass =		USB_CLASS_MISC,
+	.bDeviceSubClass =	0x02,
+	.bDeviceProtocol =	0x01,
+#endif
 	/* .bMaxPacketSize0 = f(hardware) */
 
 	/* Vendor and product id defaults change according to what configs
@@ -108,6 +140,9 @@ static struct usb_configuration audio_config_driver = {
 	.bConfigurationValue	= 1,
 	/* .iConfiguration = DYNAMIC */
 	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
+#ifndef CONFIG_GADGET_UAC1
+	.unbind			= uac2_unbind_config,
+#endif
 };
 
 /*-------------------------------------------------------------------------*/
@@ -157,7 +192,9 @@ fail:
 
 static int __exit audio_unbind(struct usb_composite_dev *cdev)
 {
+#ifdef CONFIG_GADGET_UAC1
 	gaudio_cleanup();
+#endif
 	return 0;
 }
 

drivers/usb/gadget/ci13xxx_msm.c

@@ -37,10 +37,10 @@ static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event)
 		 * Put the transceiver in non-driving mode. Otherwise host
 		 * may not detect soft-disconnection.
 		 */
-		val = otg_io_read(udc->transceiver, ULPI_FUNC_CTRL);
+		val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL);
 		val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
 		val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
-		otg_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
+		usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL);
 		break;
 	default:
 		dev_dbg(dev, "unknown ci13xxx_udc event\n");

drivers/usb/gadget/ci13xxx_udc.c

@@ -2181,6 +2181,7 @@ static int ep_disable(struct usb_ep *ep)
 	} while (mEp->dir != direction);
 
 	mEp->desc = NULL;
+	mEp->ep.desc = NULL;
 
 	spin_unlock_irqrestore(mEp->lock, flags);
 	return retval;
@@ -2537,7 +2538,7 @@ static int ci13xxx_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
 	struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
 
 	if (udc->transceiver)
-		return otg_set_power(udc->transceiver, mA);
+		return usb_phy_set_power(udc->transceiver, mA);
 	return -ENOTSUPP;
 }
 
@@ -2900,7 +2901,7 @@ static int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev,
 	if (retval < 0)
 		goto free_udc;
 
-	udc->transceiver = otg_get_transceiver();
+	udc->transceiver = usb_get_transceiver();
 
 	if (udc->udc_driver->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
 		if (udc->transceiver == NULL) {
@@ -2928,7 +2929,8 @@ static int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev,
 		goto unreg_device;
 
 	if (udc->transceiver) {
-		retval = otg_set_peripheral(udc->transceiver, &udc->gadget);
+		retval = otg_set_peripheral(udc->transceiver->otg,
+						&udc->gadget);
 		if (retval)
 			goto remove_dbg;
 	}
@@ -2945,8 +2947,8 @@ static int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev,
 
 remove_trans:
 	if (udc->transceiver) {
-		otg_set_peripheral(udc->transceiver, &udc->gadget);
-		otg_put_transceiver(udc->transceiver);
+		otg_set_peripheral(udc->transceiver->otg, &udc->gadget);
+		usb_put_transceiver(udc->transceiver);
 	}
 
 	err("error = %i", retval);
@@ -2958,7 +2960,7 @@ unreg_device:
 	device_unregister(&udc->gadget.dev);
 put_transceiver:
 	if (udc->transceiver)
-		otg_put_transceiver(udc->transceiver);
+		usb_put_transceiver(udc->transceiver);
 free_udc:
 	kfree(udc);
 	_udc = NULL;
@@ -2981,8 +2983,8 @@ static void udc_remove(void)
 	usb_del_gadget_udc(&udc->gadget);
 
 	if (udc->transceiver) {
-		otg_set_peripheral(udc->transceiver, &udc->gadget);
-		otg_put_transceiver(udc->transceiver);
+		otg_set_peripheral(udc->transceiver->otg, &udc->gadget);
+		usb_put_transceiver(udc->transceiver);
 	}
 #ifdef CONFIG_USB_GADGET_DEBUG_FILES
 	dbg_remove_files(&udc->gadget.dev);

drivers/usb/gadget/ci13xxx_udc.h

@@ -136,7 +136,7 @@ struct ci13xxx {
 	struct usb_gadget_driver  *driver;     /* 3rd party gadget driver */
 	struct ci13xxx_udc_driver *udc_driver; /* device controller driver */
 	int                        vbus_active; /* is VBUS active */
-	struct otg_transceiver    *transceiver; /* Transceiver struct */
+	struct usb_phy            *transceiver; /* Transceiver struct */
 };
 
 /******************************************************************************

drivers/usb/gadget/epautoconf.c

@@ -275,24 +275,24 @@ struct usb_ep *usb_ep_autoconfig_ss(
 		/* ep-e, ep-f are PIO with only 64 byte fifos */
 		ep = find_ep (gadget, "ep-e");
 		if (ep && ep_matches(gadget, ep, desc, ep_comp))
-			return ep;
+			goto found_ep;
 		ep = find_ep (gadget, "ep-f");
 		if (ep && ep_matches(gadget, ep, desc, ep_comp))
-			return ep;
+			goto found_ep;
 
 	} else if (gadget_is_goku (gadget)) {
 		if (USB_ENDPOINT_XFER_INT == type) {
 			/* single buffering is enough */
 			ep = find_ep(gadget, "ep3-bulk");
 			if (ep && ep_matches(gadget, ep, desc, ep_comp))
-				return ep;
+				goto found_ep;
 		} else if (USB_ENDPOINT_XFER_BULK == type
 				&& (USB_DIR_IN & desc->bEndpointAddress)) {
 			/* DMA may be available */
 			ep = find_ep(gadget, "ep2-bulk");
 			if (ep && ep_matches(gadget, ep, desc,
 					      ep_comp))
-				return ep;
+				goto found_ep;
 		}
 
 #ifdef CONFIG_BLACKFIN
@@ -311,18 +311,22 @@ struct usb_ep *usb_ep_autoconfig_ss(
 		} else
 			ep = NULL;
 		if (ep && ep_matches(gadget, ep, desc, ep_comp))
-			return ep;
+			goto found_ep;
 #endif
 	}
 
 	/* Second, look at endpoints until an unclaimed one looks usable */
 	list_for_each_entry (ep, &gadget->ep_list, ep_list) {
 		if (ep_matches(gadget, ep, desc, ep_comp))
-			return ep;
+			goto found_ep;
 	}
 
 	/* Fail */
 	return NULL;
+found_ep:
+	ep->desc = NULL;
+	ep->comp_desc = NULL;
+	return ep;
 }
 
 /**

drivers/usb/gadget/f_acm.c

@@ -5,7 +5,7 @@
  * Copyright (C) 2008 by David Brownell
  * Copyright (C) 2008 by Nokia Corporation
  * Copyright (C) 2009 by Samsung Electronics
- * Author: Michal Nazarewicz (m.nazarewicz@samsung.com)
+ * Author: Michal Nazarewicz (mina86@mina86.com)
  *
  * This software is distributed under the terms of the GNU General
  * Public License ("GPL") as published by the Free Software Foundation,
@@ -237,6 +237,42 @@ static struct usb_descriptor_header *acm_hs_function[] = {
 	NULL,
 };
 
+static struct usb_endpoint_descriptor acm_ss_in_desc = {
+	.bLength =		USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType =	USB_DT_ENDPOINT,
+	.bmAttributes =		USB_ENDPOINT_XFER_BULK,
+	.wMaxPacketSize =	cpu_to_le16(1024),
+};
+
+static struct usb_endpoint_descriptor acm_ss_out_desc = {
+	.bLength =		USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType =	USB_DT_ENDPOINT,
+	.bmAttributes =		USB_ENDPOINT_XFER_BULK,
+	.wMaxPacketSize =	cpu_to_le16(1024),
+};
+
+static struct usb_ss_ep_comp_descriptor acm_ss_bulk_comp_desc = {
+	.bLength =              sizeof acm_ss_bulk_comp_desc,
+	.bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
+};
+
+static struct usb_descriptor_header *acm_ss_function[] = {
+	(struct usb_descriptor_header *) &acm_iad_descriptor,
+	(struct usb_descriptor_header *) &acm_control_interface_desc,
+	(struct usb_descriptor_header *) &acm_header_desc,
+	(struct usb_descriptor_header *) &acm_call_mgmt_descriptor,
+	(struct usb_descriptor_header *) &acm_descriptor,
+	(struct usb_descriptor_header *) &acm_union_desc,
+	(struct usb_descriptor_header *) &acm_hs_notify_desc,
+	(struct usb_descriptor_header *) &acm_ss_bulk_comp_desc,
+	(struct usb_descriptor_header *) &acm_data_interface_desc,
+	(struct usb_descriptor_header *) &acm_ss_in_desc,
+	(struct usb_descriptor_header *) &acm_ss_bulk_comp_desc,
+	(struct usb_descriptor_header *) &acm_ss_out_desc,
+	(struct usb_descriptor_header *) &acm_ss_bulk_comp_desc,
+	NULL,
+};
+
 /* string descriptors: */
 
 #define ACM_CTRL_IDX	0
@@ -643,9 +679,21 @@ acm_bind(struct usb_configuration *c, struct usb_function *f)
 		/* copy descriptors */
 		f->hs_descriptors = usb_copy_descriptors(acm_hs_function);
 	}
+	if (gadget_is_superspeed(c->cdev->gadget)) {
+		acm_ss_in_desc.bEndpointAddress =
+			acm_fs_in_desc.bEndpointAddress;
+		acm_ss_out_desc.bEndpointAddress =
+			acm_fs_out_desc.bEndpointAddress;
+
+		/* copy descriptors, and track endpoint copies */
+		f->ss_descriptors = usb_copy_descriptors(acm_ss_function);
+		if (!f->ss_descriptors)
+			goto fail;
+	}
 
 	DBG(cdev, "acm ttyGS%d: %s speed IN/%s OUT/%s NOTIFY/%s\n",
 			acm->port_num,
+			gadget_is_superspeed(c->cdev->gadget) ? "super" :
 			gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
 			acm->port.in->name, acm->port.out->name,
 			acm->notify->name);
@@ -675,6 +723,8 @@ acm_unbind(struct usb_configuration *c, struct usb_function *f)
 
 	if (gadget_is_dualspeed(c->cdev->gadget))
 		usb_free_descriptors(f->hs_descriptors);
+	if (gadget_is_superspeed(c->cdev->gadget))
+		usb_free_descriptors(f->ss_descriptors);
 	usb_free_descriptors(f->descriptors);
 	gs_free_req(acm->notify, acm->notify_req);
 	kfree(acm);

drivers/usb/gadget/f_ecm.c

@@ -97,6 +97,20 @@ static inline unsigned ecm_bitrate(struct usb_gadget *g)
 
 /* interface descriptor: */
 
+static struct usb_interface_assoc_descriptor
+ecm_iad_descriptor = {
+	.bLength =		sizeof ecm_iad_descriptor,
+	.bDescriptorType =	USB_DT_INTERFACE_ASSOCIATION,
+
+	/* .bFirstInterface =	DYNAMIC, */
+	.bInterfaceCount =	2,	/* control + data */
+	.bFunctionClass =	USB_CLASS_COMM,
+	.bFunctionSubClass =	USB_CDC_SUBCLASS_ETHERNET,
+	.bFunctionProtocol =	USB_CDC_PROTO_NONE,
+	/* .iFunction =		DYNAMIC */
+};
+
+
 static struct usb_interface_descriptor ecm_control_intf = {
 	.bLength =		sizeof ecm_control_intf,
 	.bDescriptorType =	USB_DT_INTERFACE,
@@ -199,6 +213,7 @@ static struct usb_endpoint_descriptor fs_ecm_out_desc = {
 
 static struct usb_descriptor_header *ecm_fs_function[] = {
 	/* CDC ECM control descriptors */
+	(struct usb_descriptor_header *) &ecm_iad_descriptor,
 	(struct usb_descriptor_header *) &ecm_control_intf,
 	(struct usb_descriptor_header *) &ecm_header_desc,
 	(struct usb_descriptor_header *) &ecm_union_desc,
@@ -247,6 +262,7 @@ static struct usb_endpoint_descriptor hs_ecm_out_desc = {
 
 static struct usb_descriptor_header *ecm_hs_function[] = {
 	/* CDC ECM control descriptors */
+	(struct usb_descriptor_header *) &ecm_iad_descriptor,
 	(struct usb_descriptor_header *) &ecm_control_intf,
 	(struct usb_descriptor_header *) &ecm_header_desc,
 	(struct usb_descriptor_header *) &ecm_union_desc,
@@ -339,6 +355,7 @@ static struct usb_string ecm_string_defs[] = {
 	[0].s = "CDC Ethernet Control Model (ECM)",
 	[1].s = NULL /* DYNAMIC */,
 	[2].s = "CDC Ethernet Data",
+	[3].s = "CDC ECM",
 	{  } /* end of list */
 };
 
@@ -674,6 +691,7 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f)
 	if (status < 0)
 		goto fail;
 	ecm->ctrl_id = status;
+	ecm_iad_descriptor.bFirstInterface = status;
 
 	ecm_control_intf.bInterfaceNumber = status;
 	ecm_union_desc.bMasterInterface0 = status;
@@ -864,6 +882,13 @@ ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN])
 			return status;
 		ecm_string_defs[1].id = status;
 		ecm_desc.iMACAddress = status;
+
+		/* IAD label */
+		status = usb_string_id(c->cdev);
+		if (status < 0)
+			return status;
+		ecm_string_defs[3].id = status;
+		ecm_iad_descriptor.iFunction = status;
 	}
 
 	/* allocate and initialize one new instance */

drivers/usb/gadget/f_fs.c

@@ -2,7 +2,7 @@
  * f_fs.c -- user mode file system API for USB composite function controllers
  *
  * Copyright (C) 2010 Samsung Electronics
- * Author: Michal Nazarewicz <m.nazarewicz@samsung.com>
+ * Author: Michal Nazarewicz <mina86@mina86.com>
  *
  * Based on inode.c (GadgetFS) which was:
  * Copyright (C) 2003-2004 David Brownell

drivers/usb/gadget/f_mass_storage.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2003-2008 Alan Stern
  * Copyright (C) 2009 Samsung Electronics
- *                    Author: Michal Nazarewicz <m.nazarewicz@samsung.com>
+ *                    Author: Michal Nazarewicz <mina86@mina86.com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -304,7 +304,6 @@
 
 static const char fsg_string_interface[] = "Mass Storage";
 
-#define FSG_NO_INTR_EP 1
 #define FSG_NO_DEVICE_STRINGS    1
 #define FSG_NO_OTG               1
 #define FSG_NO_INTR_EP           1
@@ -620,7 +619,7 @@ static int fsg_setup(struct usb_function *f,
 
 	switch (ctrl->bRequest) {
 
-	case USB_BULK_RESET_REQUEST:
+	case US_BULK_RESET_REQUEST:
 		if (ctrl->bRequestType !=
 		    (USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE))
 			break;
@@ -636,7 +635,7 @@ static int fsg_setup(struct usb_function *f,
 		raise_exception(fsg->common, FSG_STATE_RESET);
 		return DELAYED_STATUS;
 
-	case USB_BULK_GET_MAX_LUN_REQUEST:
+	case US_BULK_GET_MAX_LUN:
 		if (ctrl->bRequestType !=
 		    (USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE))
 			break;
@@ -1742,7 +1741,7 @@ static int send_status(struct fsg_common *common)
 	struct fsg_buffhd	*bh;
 	struct bulk_cs_wrap	*csw;
 	int			rc;
-	u8			status = USB_STATUS_PASS;
+	u8			status = US_BULK_STAT_OK;
 	u32			sd, sdinfo = 0;
 
 	/* Wait for the next buffer to become available */
@@ -1763,11 +1762,11 @@ static int send_status(struct fsg_common *common)
 
 	if (common->phase_error) {
 		DBG(common, "sending phase-error status\n");
-		status = USB_STATUS_PHASE_ERROR;
+		status = US_BULK_STAT_PHASE;
 		sd = SS_INVALID_COMMAND;
 	} else if (sd != SS_NO_SENSE) {
 		DBG(common, "sending command-failure status\n");
-		status = USB_STATUS_FAIL;
+		status = US_BULK_STAT_FAIL;
 		VDBG(common, "  sense data: SK x%02x, ASC x%02x, ASCQ x%02x;"
 				"  info x%x\n",
 				SK(sd), ASC(sd), ASCQ(sd), sdinfo);
@@ -1776,12 +1775,12 @@ static int send_status(struct fsg_common *common)
 	/* Store and send the Bulk-only CSW */
 	csw = (void *)bh->buf;
 
-	csw->Signature = cpu_to_le32(USB_BULK_CS_SIG);
+	csw->Signature = cpu_to_le32(US_BULK_CS_SIGN);
 	csw->Tag = common->tag;
 	csw->Residue = cpu_to_le32(common->residue);
 	csw->Status = status;
 
-	bh->inreq->length = USB_BULK_CS_WRAP_LEN;
+	bh->inreq->length = US_BULK_CS_WRAP_LEN;
 	bh->inreq->zero = 0;
 	if (!start_in_transfer(common, bh))
 		/* Don't know what to do if common->fsg is NULL */
@@ -2221,7 +2220,7 @@ unknown_cmnd:
 static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
 {
 	struct usb_request	*req = bh->outreq;
-	struct fsg_bulk_cb_wrap	*cbw = req->buf;
+	struct bulk_cb_wrap	*cbw = req->buf;
 	struct fsg_common	*common = fsg->common;
 
 	/* Was this a real packet?  Should it be ignored? */
@@ -2229,9 +2228,9 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
 		return -EINVAL;
 
 	/* Is the CBW valid? */
-	if (req->actual != USB_BULK_CB_WRAP_LEN ||
+	if (req->actual != US_BULK_CB_WRAP_LEN ||
 			cbw->Signature != cpu_to_le32(
-				USB_BULK_CB_SIG)) {
+				US_BULK_CB_SIGN)) {
 		DBG(fsg, "invalid CBW: len %u sig 0x%x\n",
 				req->actual,
 				le32_to_cpu(cbw->Signature));
@@ -2253,7 +2252,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
 	}
 
 	/* Is the CBW meaningful? */
-	if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~USB_BULK_IN_FLAG ||
+	if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~US_BULK_FLAG_IN ||
 			cbw->Length <= 0 || cbw->Length > MAX_COMMAND_SIZE) {
 		DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, "
 				"cmdlen %u\n",
@@ -2273,7 +2272,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
 	/* Save the command for later */
 	common->cmnd_size = cbw->Length;
 	memcpy(common->cmnd, cbw->CDB, common->cmnd_size);
-	if (cbw->Flags & USB_BULK_IN_FLAG)
+	if (cbw->Flags & US_BULK_FLAG_IN)
 		common->data_dir = DATA_DIR_TO_HOST;
 	else
 		common->data_dir = DATA_DIR_FROM_HOST;
@@ -2303,7 +2302,7 @@ static int get_next_command(struct fsg_common *common)
 	}
 
 	/* Queue a request to read a Bulk-only CBW */
-	set_bulk_out_req_length(common, bh, USB_BULK_CB_WRAP_LEN);
+	set_bulk_out_req_length(common, bh, US_BULK_CB_WRAP_LEN);
 	if (!start_out_transfer(common, bh))
 		/* Don't know what to do if common->fsg is NULL */
 		return -EIO;

drivers/usb/gadget/f_midi.c

@@ -780,7 +780,7 @@ f_midi_bind(struct usb_configuration *c, struct usb_function *f)
 	midi->out_ep->driver_data = cdev;	/* claim */
 
 	/* allocate temporary function list */
-	midi_function = kcalloc((MAX_PORTS * 4) + 9, sizeof(midi_function),
+	midi_function = kcalloc((MAX_PORTS * 4) + 9, sizeof(*midi_function),
 				GFP_KERNEL);
 	if (!midi_function) {
 		status = -ENOMEM;

drivers/usb/gadget/f_rndis.c

@@ -5,7 +5,7 @@
  * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger
  * Copyright (C) 2008 Nokia Corporation
  * Copyright (C) 2009 Samsung Electronics
- *                    Author: Michal Nazarewicz (m.nazarewicz@samsung.com)
+ *                    Author: Michal Nazarewicz (mina86@mina86.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

drivers/usb/gadget/f_serial.c

@@ -99,6 +99,34 @@ static struct usb_descriptor_header *gser_hs_function[] __initdata = {
 	NULL,
 };
 
+static struct usb_endpoint_descriptor gser_ss_in_desc __initdata = {
+	.bLength =		USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType =	USB_DT_ENDPOINT,
+	.bmAttributes =		USB_ENDPOINT_XFER_BULK,
+	.wMaxPacketSize =	cpu_to_le16(1024),
+};
+
+static struct usb_endpoint_descriptor gser_ss_out_desc __initdata = {
+	.bLength =		USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType =	USB_DT_ENDPOINT,
+	.bmAttributes =		USB_ENDPOINT_XFER_BULK,
+	.wMaxPacketSize =	cpu_to_le16(1024),
+};
+
+static struct usb_ss_ep_comp_descriptor gser_ss_bulk_comp_desc __initdata = {
+	.bLength =              sizeof gser_ss_bulk_comp_desc,
+	.bDescriptorType =      USB_DT_SS_ENDPOINT_COMP,
+};
+
+static struct usb_descriptor_header *gser_ss_function[] __initdata = {
+	(struct usb_descriptor_header *) &gser_interface_desc,
+	(struct usb_descriptor_header *) &gser_ss_in_desc,
+	(struct usb_descriptor_header *) &gser_ss_bulk_comp_desc,
+	(struct usb_descriptor_header *) &gser_ss_out_desc,
+	(struct usb_descriptor_header *) &gser_ss_bulk_comp_desc,
+	NULL,
+};
+
 /* string descriptors: */
 
 static struct usb_string gser_string_defs[] = {
@@ -201,9 +229,21 @@ gser_bind(struct usb_configuration *c, struct usb_function *f)
 		/* copy descriptors, and track endpoint copies */
 		f->hs_descriptors = usb_copy_descriptors(gser_hs_function);
 	}
+	if (gadget_is_superspeed(c->cdev->gadget)) {
+		gser_ss_in_desc.bEndpointAddress =
+			gser_fs_in_desc.bEndpointAddress;
+		gser_ss_out_desc.bEndpointAddress =
+			gser_fs_out_desc.bEndpointAddress;
+
+		/* copy descriptors, and track endpoint copies */
+		f->ss_descriptors = usb_copy_descriptors(gser_ss_function);
+		if (!f->ss_descriptors)
+			goto fail;
+	}
 
 	DBG(cdev, "generic ttyGS%d: %s speed IN/%s OUT/%s\n",
 			gser->port_num,
+			gadget_is_superspeed(c->cdev->gadget) ? "super" :
 			gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
 			gser->port.in->name, gser->port.out->name);
 	return 0;
@@ -225,6 +265,8 @@ gser_unbind(struct usb_configuration *c, struct usb_function *f)
 {
 	if (gadget_is_dualspeed(c->cdev->gadget))
 		usb_free_descriptors(f->hs_descriptors);
+	if (gadget_is_superspeed(c->cdev->gadget))
+		usb_free_descriptors(f->ss_descriptors);
 	usb_free_descriptors(f->descriptors);
 	kfree(func_to_gser(f));
 }

drivers/usb/gadget/f_audio.c → drivers/usb/gadget/f_uac1.c

@@ -14,7 +14,7 @@
 #include <linux/device.h>
 #include <linux/atomic.h>
 
-#include "u_audio.h"
+#include "u_uac1.h"
 
 #define OUT_EP_MAX_PACKET_SIZE	200
 static int req_buf_size = OUT_EP_MAX_PACKET_SIZE;
@@ -216,29 +216,6 @@ static struct usb_descriptor_header *f_audio_desc[] __initdata = {
 	NULL,
 };
 
-/* string IDs are assigned dynamically */
-
-#define STRING_MANUFACTURER_IDX		0
-#define STRING_PRODUCT_IDX		1
-
-static char manufacturer[50];
-
-static struct usb_string strings_dev[] = {
-	[STRING_MANUFACTURER_IDX].s = manufacturer,
-	[STRING_PRODUCT_IDX].s = DRIVER_DESC,
-	{  } /* end of list */
-};
-
-static struct usb_gadget_strings stringtab_dev = {
-	.language	= 0x0409,	/* en-us */
-	.strings	= strings_dev,
-};
-
-static struct usb_gadget_strings *audio_strings[] = {
-	&stringtab_dev,
-	NULL,
-};
-
 /*
  * This function is an ALSA sound card following USB Audio Class Spec 1.0.
  */

drivers/usb/gadget/f_uac2.c

@@ -0,0 +1,1449 @@
+/*
+ * f_uac2.c -- USB Audio Class 2.0 Function
+ *
+ * Copyright (C) 2011
+ *    Yadwinder Singh (yadi.brar01@gmail.com)
+ *    Jaswinder Singh (jaswinder.singh@linaro.org)
+ *
+ * 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.
+ */
+
+#include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+
+/* Playback(USB-IN) Default Stereo - Fl/Fr */
+static int p_chmask = 0x3;
+module_param(p_chmask, uint, S_IRUGO);
+MODULE_PARM_DESC(p_chmask, "Playback Channel Mask");
+
+/* Playback Default 48 KHz */
+static int p_srate = 48000;
+module_param(p_srate, uint, S_IRUGO);
+MODULE_PARM_DESC(p_srate, "Playback Sampling Rate");
+
+/* Playback Default 16bits/sample */
+static int p_ssize = 2;
+module_param(p_ssize, uint, S_IRUGO);
+MODULE_PARM_DESC(p_ssize, "Playback Sample Size(bytes)");
+
+/* Capture(USB-OUT) Default Stereo - Fl/Fr */
+static int c_chmask = 0x3;
+module_param(c_chmask, uint, S_IRUGO);
+MODULE_PARM_DESC(c_chmask, "Capture Channel Mask");
+
+/* Capture Default 64 KHz */
+static int c_srate = 64000;
+module_param(c_srate, uint, S_IRUGO);
+MODULE_PARM_DESC(c_srate, "Capture Sampling Rate");
+
+/* Capture Default 16bits/sample */
+static int c_ssize = 2;
+module_param(c_ssize, uint, S_IRUGO);
+MODULE_PARM_DESC(c_ssize, "Capture Sample Size(bytes)");
+
+#define DMA_ADDR_INVALID	(~(dma_addr_t)0)
+
+#define ALT_SET(x, a)	do {(x) &= ~0xff; (x) |= (a); } while (0)
+#define ALT_GET(x)	((x) & 0xff)
+#define INTF_SET(x, i)	do {(x) &= 0xff; (x) |= ((i) << 8); } while (0)
+#define INTF_GET(x)	((x >> 8) & 0xff)
+
+/* Keep everyone on toes */
+#define USB_XFERS	2
+
+/*
+ * The driver implements a simple UAC_2 topology.
+ * USB-OUT -> IT_1 -> OT_3 -> ALSA_Capture
+ * ALSA_Playback -> IT_2 -> OT_4 -> USB-IN
+ * Capture and Playback sampling rates are independently
+ *  controlled by two clock sources :
+ *    CLK_5 := c_srate, and CLK_6 := p_srate
+ */
+#define USB_OUT_IT_ID	1
+#define IO_IN_IT_ID	2
+#define IO_OUT_OT_ID	3
+#define USB_IN_OT_ID	4
+#define USB_OUT_CLK_ID	5
+#define USB_IN_CLK_ID	6
+
+#define CONTROL_ABSENT	0
+#define CONTROL_RDONLY	1
+#define CONTROL_RDWR	3
+
+#define CLK_FREQ_CTRL	0
+#define CLK_VLD_CTRL	2
+
+#define COPY_CTRL	0
+#define CONN_CTRL	2
+#define OVRLD_CTRL	4
+#define CLSTR_CTRL	6
+#define UNFLW_CTRL	8
+#define OVFLW_CTRL	10
+
+const char *uac2_name = "snd_uac2";
+
+struct uac2_req {
+	struct uac2_rtd_params *pp; /* parent param */
+	struct usb_request *req;
+};
+
+struct uac2_rtd_params {
+	bool ep_enabled; /* if the ep is enabled */
+	/* Size of the ring buffer */
+	size_t dma_bytes;
+	unsigned char *dma_area;
+
+	struct snd_pcm_substream *ss;
+
+	/* Ring buffer */
+	ssize_t hw_ptr;
+
+	void *rbuf;
+
+	size_t period_size;
+
+	unsigned max_psize;
+	struct uac2_req ureq[USB_XFERS];
+
+	spinlock_t lock;
+};
+
+struct snd_uac2_chip {
+	struct platform_device pdev;
+	struct platform_driver pdrv;
+
+	struct uac2_rtd_params p_prm;
+	struct uac2_rtd_params c_prm;
+
+	struct snd_card *card;
+	struct snd_pcm *pcm;
+};
+
+#define BUFF_SIZE_MAX	(PAGE_SIZE * 16)
+#define PRD_SIZE_MAX	PAGE_SIZE
+#define MIN_PERIODS	4
+
+static struct snd_pcm_hardware uac2_pcm_hardware = {
+	.info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER
+		 | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID
+		 | SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,
+	.rates = SNDRV_PCM_RATE_CONTINUOUS,
+	.periods_max = BUFF_SIZE_MAX / PRD_SIZE_MAX,
+	.buffer_bytes_max = BUFF_SIZE_MAX,
+	.period_bytes_max = PRD_SIZE_MAX,
+	.periods_min = MIN_PERIODS,
+};
+
+struct audio_dev {
+	/* Currently active {Interface[15:8] | AltSettings[7:0]} */
+	__u16 ac_alt, as_out_alt, as_in_alt;
+
+	struct usb_ep *in_ep, *out_ep;
+	struct usb_function func;
+
+	/* The ALSA Sound Card it represents on the USB-Client side */
+	struct snd_uac2_chip uac2;
+};
+
+static struct audio_dev *agdev_g;
+
+static inline
+struct audio_dev *func_to_agdev(struct usb_function *f)
+{
+	return container_of(f, struct audio_dev, func);
+}
+
+static inline
+struct audio_dev *uac2_to_agdev(struct snd_uac2_chip *u)
+{
+	return container_of(u, struct audio_dev, uac2);
+}
+
+static inline
+struct snd_uac2_chip *pdev_to_uac2(struct platform_device *p)
+{
+	return container_of(p, struct snd_uac2_chip, pdev);
+}
+
+static inline
+struct snd_uac2_chip *prm_to_uac2(struct uac2_rtd_params *r)
+{
+	struct snd_uac2_chip *uac2 = container_of(r,
+					struct snd_uac2_chip, c_prm);
+
+	if (&uac2->c_prm != r)
+		uac2 = container_of(r, struct snd_uac2_chip, p_prm);
+
+	return uac2;
+}
+
+static inline
+uint num_channels(uint chanmask)
+{
+	uint num = 0;
+
+	while (chanmask) {
+		num += (chanmask & 1);
+		chanmask >>= 1;
+	}
+
+	return num;
+}
+
+static void
+agdev_iso_complete(struct usb_ep *ep, struct usb_request *req)
+{
+	unsigned pending;
+	unsigned long flags;
+	bool update_alsa = false;
+	unsigned char *src, *dst;
+	int status = req->status;
+	struct uac2_req *ur = req->context;
+	struct snd_pcm_substream *substream;
+	struct uac2_rtd_params *prm = ur->pp;
+	struct snd_uac2_chip *uac2 = prm_to_uac2(prm);
+
+	/* i/f shutting down */
+	if (!prm->ep_enabled)
+		return;
+
+	/*
+	 * We can't really do much about bad xfers.
+	 * Afterall, the ISOCH xfers could fail legitimately.
+	 */
+	if (status)
+		pr_debug("%s: iso_complete status(%d) %d/%d\n",
+			__func__, status, req->actual, req->length);
+
+	substream = prm->ss;
+
+	/* Do nothing if ALSA isn't active */
+	if (!substream)
+		goto exit;
+
+	spin_lock_irqsave(&prm->lock, flags);
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		src = prm->dma_area + prm->hw_ptr;
+		req->actual = req->length;
+		dst = req->buf;
+	} else {
+		dst = prm->dma_area + prm->hw_ptr;
+		src = req->buf;
+	}
+
+	pending = prm->hw_ptr % prm->period_size;
+	pending += req->actual;
+	if (pending >= prm->period_size)
+		update_alsa = true;
+
+	prm->hw_ptr = (prm->hw_ptr + req->actual) % prm->dma_bytes;
+
+	spin_unlock_irqrestore(&prm->lock, flags);
+
+	/* Pack USB load in ALSA ring buffer */
+	memcpy(dst, src, req->actual);
+exit:
+	if (usb_ep_queue(ep, req, GFP_ATOMIC))
+		dev_err(&uac2->pdev.dev, "%d Error!\n", __LINE__);
+
+	if (update_alsa)
+		snd_pcm_period_elapsed(substream);
+
+	return;
+}
+
+static int
+uac2_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream);
+	struct audio_dev *agdev = uac2_to_agdev(uac2);
+	struct uac2_rtd_params *prm;
+	unsigned long flags;
+	struct usb_ep *ep;
+	int err = 0;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		ep = agdev->in_ep;
+		prm = &uac2->p_prm;
+	} else {
+		ep = agdev->out_ep;
+		prm = &uac2->c_prm;
+	}
+
+	spin_lock_irqsave(&prm->lock, flags);
+
+	/* Reset */
+	prm->hw_ptr = 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+		prm->ss = substream;
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		prm->ss = NULL;
+		break;
+	default:
+		err = -EINVAL;
+	}
+
+	spin_unlock_irqrestore(&prm->lock, flags);
+
+	/* Clear buffer after Play stops */
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && !prm->ss)
+		memset(prm->rbuf, 0, prm->max_psize * USB_XFERS);
+
+	return err;
+}
+
+static snd_pcm_uframes_t uac2_pcm_pointer(struct snd_pcm_substream *substream)
+{
+	struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream);
+	struct uac2_rtd_params *prm;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		prm = &uac2->p_prm;
+	else
+		prm = &uac2->c_prm;
+
+	return bytes_to_frames(substream->runtime, prm->hw_ptr);
+}
+
+static int uac2_pcm_hw_params(struct snd_pcm_substream *substream,
+			       struct snd_pcm_hw_params *hw_params)
+{
+	struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream);
+	struct uac2_rtd_params *prm;
+	int err;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		prm = &uac2->p_prm;
+	else
+		prm = &uac2->c_prm;
+
+	err = snd_pcm_lib_malloc_pages(substream,
+					params_buffer_bytes(hw_params));
+	if (err >= 0) {
+		prm->dma_bytes = substream->runtime->dma_bytes;
+		prm->dma_area = substream->runtime->dma_area;
+		prm->period_size = params_period_bytes(hw_params);
+	}
+
+	return err;
+}
+
+static int uac2_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+	struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream);
+	struct uac2_rtd_params *prm;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		prm = &uac2->p_prm;
+	else
+		prm = &uac2->c_prm;
+
+	prm->dma_area = NULL;
+	prm->dma_bytes = 0;
+	prm->period_size = 0;
+
+	return snd_pcm_lib_free_pages(substream);
+}
+
+static int uac2_pcm_open(struct snd_pcm_substream *substream)
+{
+	struct snd_uac2_chip *uac2 = snd_pcm_substream_chip(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+
+	runtime->hw = uac2_pcm_hardware;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		spin_lock_init(&uac2->p_prm.lock);
+		runtime->hw.rate_min = p_srate;
+		runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; /* ! p_ssize ! */
+		runtime->hw.channels_min = num_channels(p_chmask);
+		runtime->hw.period_bytes_min = 2 * uac2->p_prm.max_psize
+						/ runtime->hw.periods_min;
+	} else {
+		spin_lock_init(&uac2->c_prm.lock);
+		runtime->hw.rate_min = c_srate;
+		runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE; /* ! c_ssize ! */
+		runtime->hw.channels_min = num_channels(c_chmask);
+		runtime->hw.period_bytes_min = 2 * uac2->c_prm.max_psize
+						/ runtime->hw.periods_min;
+	}
+
+	runtime->hw.rate_max = runtime->hw.rate_min;
+	runtime->hw.channels_max = runtime->hw.channels_min;
+
+	snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+
+	return 0;
+}
+
+/* ALSA cries without these function pointers */
+static int uac2_pcm_null(struct snd_pcm_substream *substream)
+{
+	return 0;
+}
+
+static struct snd_pcm_ops uac2_pcm_ops = {
+	.open = uac2_pcm_open,
+	.close = uac2_pcm_null,
+	.ioctl = snd_pcm_lib_ioctl,
+	.hw_params = uac2_pcm_hw_params,
+	.hw_free = uac2_pcm_hw_free,
+	.trigger = uac2_pcm_trigger,
+	.pointer = uac2_pcm_pointer,
+	.prepare = uac2_pcm_null,
+};
+
+static int __devinit snd_uac2_probe(struct platform_device *pdev)
+{
+	struct snd_uac2_chip *uac2 = pdev_to_uac2(pdev);
+	struct snd_card *card;
+	struct snd_pcm *pcm;
+	int err;
+
+	/* Choose any slot, with no id */
+	err = snd_card_create(-1, NULL, THIS_MODULE, 0, &card);
+	if (err < 0)
+		return err;
+
+	uac2->card = card;
+
+	/*
+	 * Create first PCM device
+	 * Create a substream only for non-zero channel streams
+	 */
+	err = snd_pcm_new(uac2->card, "UAC2 PCM", 0,
+			       p_chmask ? 1 : 0, c_chmask ? 1 : 0, &pcm);
+	if (err < 0)
+		goto snd_fail;
+
+	strcpy(pcm->name, "UAC2 PCM");
+	pcm->private_data = uac2;
+
+	uac2->pcm = pcm;
+
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &uac2_pcm_ops);
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &uac2_pcm_ops);
+
+	strcpy(card->driver, "UAC2_Gadget");
+	strcpy(card->shortname, "UAC2_Gadget");
+	sprintf(card->longname, "UAC2_Gadget %i", pdev->id);
+
+	snd_card_set_dev(card, &pdev->dev);
+
+	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
+		snd_dma_continuous_data(GFP_KERNEL), 0, BUFF_SIZE_MAX);
+
+	err = snd_card_register(card);
+	if (!err) {
+		platform_set_drvdata(pdev, card);
+		return 0;
+	}
+
+snd_fail:
+	snd_card_free(card);
+
+	uac2->pcm = NULL;
+	uac2->card = NULL;
+
+	return err;
+}
+
+static int __devexit snd_uac2_remove(struct platform_device *pdev)
+{
+	struct snd_card *card = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+
+	if (card)
+		return snd_card_free(card);
+
+	return 0;
+}
+
+static int alsa_uac2_init(struct audio_dev *agdev)
+{
+	struct snd_uac2_chip *uac2 = &agdev->uac2;
+	int err;
+
+	uac2->pdrv.probe = snd_uac2_probe;
+	uac2->pdrv.remove = snd_uac2_remove;
+	uac2->pdrv.driver.name = uac2_name;
+
+	uac2->pdev.id = 0;
+	uac2->pdev.name = uac2_name;
+
+	/* Register snd_uac2 driver */
+	err = platform_driver_register(&uac2->pdrv);
+	if (err)
+		return err;
+
+	/* Register snd_uac2 device */
+	err = platform_device_register(&uac2->pdev);
+	if (err)
+		platform_driver_unregister(&uac2->pdrv);
+
+	return err;
+}
+
+static void alsa_uac2_exit(struct audio_dev *agdev)
+{
+	struct snd_uac2_chip *uac2 = &agdev->uac2;
+
+	platform_driver_unregister(&uac2->pdrv);
+	platform_device_unregister(&uac2->pdev);
+}
+
+
+/* --------- USB Function Interface ------------- */
+
+enum {
+	STR_ASSOC,
+	STR_IF_CTRL,
+	STR_CLKSRC_IN,
+	STR_CLKSRC_OUT,
+	STR_USB_IT,
+	STR_IO_IT,
+	STR_USB_OT,
+	STR_IO_OT,
+	STR_AS_OUT_ALT0,
+	STR_AS_OUT_ALT1,
+	STR_AS_IN_ALT0,
+	STR_AS_IN_ALT1,
+};
+
+static const char ifassoc[] = "Source/Sink";
+static const char ifctrl[] = "Topology Control";
+static char clksrc_in[8];
+static char clksrc_out[8];
+static const char usb_it[] = "USBH Out";
+static const char io_it[] = "USBD Out";
+static const char usb_ot[] = "USBH In";
+static const char io_ot[] = "USBD In";
+static const char out_alt0[] = "Playback Inactive";
+static const char out_alt1[] = "Playback Active";
+static const char in_alt0[] = "Capture Inactive";
+static const char in_alt1[] = "Capture Active";
+
+static struct usb_string strings_fn[] = {
+	[STR_ASSOC].s = ifassoc,
+	[STR_IF_CTRL].s = ifctrl,
+	[STR_CLKSRC_IN].s = clksrc_in,
+	[STR_CLKSRC_OUT].s = clksrc_out,
+	[STR_USB_IT].s = usb_it,
+	[STR_IO_IT].s = io_it,
+	[STR_USB_OT].s = usb_ot,
+	[STR_IO_OT].s = io_ot,
+	[STR_AS_OUT_ALT0].s = out_alt0,
+	[STR_AS_OUT_ALT1].s = out_alt1,
+	[STR_AS_IN_ALT0].s = in_alt0,
+	[STR_AS_IN_ALT1].s = in_alt1,
+	{ },
+};
+
+static struct usb_gadget_strings str_fn = {
+	.language = 0x0409,	/* en-us */
+	.strings = strings_fn,
+};
+
+static struct usb_gadget_strings *fn_strings[] = {
+	&str_fn,
+	NULL,
+};
+
+static struct usb_qualifier_descriptor devqual_desc = {
+	.bLength = sizeof devqual_desc,
+	.bDescriptorType = USB_DT_DEVICE_QUALIFIER,
+
+	.bcdUSB = cpu_to_le16(0x200),
+	.bDeviceClass = USB_CLASS_MISC,
+	.bDeviceSubClass = 0x02,
+	.bDeviceProtocol = 0x01,
+	.bNumConfigurations = 1,
+	.bRESERVED = 0,
+};
+
+static struct usb_interface_assoc_descriptor iad_desc = {
+	.bLength = sizeof iad_desc,
+	.bDescriptorType = USB_DT_INTERFACE_ASSOCIATION,
+
+	.bFirstInterface = 0,
+	.bInterfaceCount = 3,
+	.bFunctionClass = USB_CLASS_AUDIO,
+	.bFunctionSubClass = UAC2_FUNCTION_SUBCLASS_UNDEFINED,
+	.bFunctionProtocol = UAC_VERSION_2,
+};
+
+/* Audio Control Interface */
+static struct usb_interface_descriptor std_ac_if_desc = {
+	.bLength = sizeof std_ac_if_desc,
+	.bDescriptorType = USB_DT_INTERFACE,
+
+	.bAlternateSetting = 0,
+	.bNumEndpoints = 0,
+	.bInterfaceClass = USB_CLASS_AUDIO,
+	.bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL,
+	.bInterfaceProtocol = UAC_VERSION_2,
+};
+
+/* Clock source for IN traffic */
+struct uac_clock_source_descriptor in_clk_src_desc = {
+	.bLength = sizeof in_clk_src_desc,
+	.bDescriptorType = USB_DT_CS_INTERFACE,
+
+	.bDescriptorSubtype = UAC2_CLOCK_SOURCE,
+	.bClockID = USB_IN_CLK_ID,
+	.bmAttributes = UAC_CLOCK_SOURCE_TYPE_INT_FIXED,
+	.bmControls = (CONTROL_RDONLY << CLK_FREQ_CTRL),
+	.bAssocTerminal = 0,
+};
+
+/* Clock source for OUT traffic */
+struct uac_clock_source_descriptor out_clk_src_desc = {
+	.bLength = sizeof out_clk_src_desc,
+	.bDescriptorType = USB_DT_CS_INTERFACE,
+
+	.bDescriptorSubtype = UAC2_CLOCK_SOURCE,
+	.bClockID = USB_OUT_CLK_ID,
+	.bmAttributes = UAC_CLOCK_SOURCE_TYPE_INT_FIXED,
+	.bmControls = (CONTROL_RDONLY << CLK_FREQ_CTRL),
+	.bAssocTerminal = 0,
+};
+
+/* Input Terminal for USB_OUT */
+struct uac2_input_terminal_descriptor usb_out_it_desc = {
+	.bLength = sizeof usb_out_it_desc,
+	.bDescriptorType = USB_DT_CS_INTERFACE,
+
+	.bDescriptorSubtype = UAC_INPUT_TERMINAL,
+	.bTerminalID = USB_OUT_IT_ID,
+	.wTerminalType = cpu_to_le16(UAC_TERMINAL_STREAMING),
+	.bAssocTerminal = 0,
+	.bCSourceID = USB_OUT_CLK_ID,
+	.iChannelNames = 0,
+	.bmControls = (CONTROL_RDWR << COPY_CTRL),
+};
+
+/* Input Terminal for I/O-In */
+struct uac2_input_terminal_descriptor io_in_it_desc = {
+	.bLength = sizeof io_in_it_desc,
+	.bDescriptorType = USB_DT_CS_INTERFACE,
+
+	.bDescriptorSubtype = UAC_INPUT_TERMINAL,
+	.bTerminalID = IO_IN_IT_ID,
+	.wTerminalType = cpu_to_le16(UAC_INPUT_TERMINAL_UNDEFINED),
+	.bAssocTerminal = 0,
+	.bCSourceID = USB_IN_CLK_ID,
+	.iChannelNames = 0,
+	.bmControls = (CONTROL_RDWR << COPY_CTRL),
+};
+
+/* Ouput Terminal for USB_IN */
+struct uac2_output_terminal_descriptor usb_in_ot_desc = {
+	.bLength = sizeof usb_in_ot_desc,
+	.bDescriptorType = USB_DT_CS_INTERFACE,
+
+	.bDescriptorSubtype = UAC_OUTPUT_TERMINAL,
+	.bTerminalID = USB_IN_OT_ID,
+	.wTerminalType = cpu_to_le16(UAC_TERMINAL_STREAMING),
+	.bAssocTerminal = 0,
+	.bSourceID = IO_IN_IT_ID,
+	.bCSourceID = USB_IN_CLK_ID,
+	.bmControls = (CONTROL_RDWR << COPY_CTRL),
+};
+
+/* Ouput Terminal for I/O-Out */
+struct uac2_output_terminal_descriptor io_out_ot_desc = {
+	.bLength = sizeof io_out_ot_desc,
+	.bDescriptorType = USB_DT_CS_INTERFACE,
+
+	.bDescriptorSubtype = UAC_OUTPUT_TERMINAL,
+	.bTerminalID = IO_OUT_OT_ID,
+	.wTerminalType = cpu_to_le16(UAC_OUTPUT_TERMINAL_UNDEFINED),
+	.bAssocTerminal = 0,
+	.bSourceID = USB_OUT_IT_ID,
+	.bCSourceID = USB_OUT_CLK_ID,
+	.bmControls = (CONTROL_RDWR << COPY_CTRL),
+};
+
+struct uac2_ac_header_descriptor ac_hdr_desc = {
+	.bLength = sizeof ac_hdr_desc,
+	.bDescriptorType = USB_DT_CS_INTERFACE,
+
+	.bDescriptorSubtype = UAC_MS_HEADER,
+	.bcdADC = cpu_to_le16(0x200),
+	.bCategory = UAC2_FUNCTION_IO_BOX,
+	.wTotalLength = sizeof in_clk_src_desc + sizeof out_clk_src_desc
+			 + sizeof usb_out_it_desc + sizeof io_in_it_desc
+			+ sizeof usb_in_ot_desc + sizeof io_out_ot_desc,
+	.bmControls = 0,
+};
+
+/* Audio Streaming OUT Interface - Alt0 */
+static struct usb_interface_descriptor std_as_out_if0_desc = {
+	.bLength = sizeof std_as_out_if0_desc,
+	.bDescriptorType = USB_DT_INTERFACE,
+
+	.bAlternateSetting = 0,
+	.bNumEndpoints = 0,
+	.bInterfaceClass = USB_CLASS_AUDIO,
+	.bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING,
+	.bInterfaceProtocol = UAC_VERSION_2,
+};
+
+/* Audio Streaming OUT Interface - Alt1 */
+static struct usb_interface_descriptor std_as_out_if1_desc = {
+	.bLength = sizeof std_as_out_if1_desc,
+	.bDescriptorType = USB_DT_INTERFACE,
+
+	.bAlternateSetting = 1,
+	.bNumEndpoints = 1,
+	.bInterfaceClass = USB_CLASS_AUDIO,
+	.bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING,
+	.bInterfaceProtocol = UAC_VERSION_2,
+};
+
+/* Audio Stream OUT Intface Desc */
+struct uac2_as_header_descriptor as_out_hdr_desc = {
+	.bLength = sizeof as_out_hdr_desc,
+	.bDescriptorType = USB_DT_CS_INTERFACE,
+
+	.bDescriptorSubtype = UAC_AS_GENERAL,
+	.bTerminalLink = USB_OUT_IT_ID,
+	.bmControls = 0,
+	.bFormatType = UAC_FORMAT_TYPE_I,
+	.bmFormats = cpu_to_le32(UAC_FORMAT_TYPE_I_PCM),
+	.iChannelNames = 0,
+};
+
+/* Audio USB_OUT Format */
+struct uac2_format_type_i_descriptor as_out_fmt1_desc = {
+	.bLength = sizeof as_out_fmt1_desc,
+	.bDescriptorType = USB_DT_CS_INTERFACE,
+	.bDescriptorSubtype = UAC_FORMAT_TYPE,
+	.bFormatType = UAC_FORMAT_TYPE_I,
+};
+
+/* STD AS ISO OUT Endpoint */
+struct usb_endpoint_descriptor fs_epout_desc = {
+	.bLength = USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType = USB_DT_ENDPOINT,
+
+	.bEndpointAddress = USB_DIR_OUT,
+	.bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC,
+	.bInterval = 1,
+};
+
+struct usb_endpoint_descriptor hs_epout_desc = {
+	.bLength = USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType = USB_DT_ENDPOINT,
+
+	.bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC,
+	.bInterval = 4,
+};
+
+/* CS AS ISO OUT Endpoint */
+static struct uac2_iso_endpoint_descriptor as_iso_out_desc = {
+	.bLength = sizeof as_iso_out_desc,
+	.bDescriptorType = USB_DT_CS_ENDPOINT,
+
+	.bDescriptorSubtype = UAC_EP_GENERAL,
+	.bmAttributes = 0,
+	.bmControls = 0,
+	.bLockDelayUnits = 0,
+	.wLockDelay = 0,
+};
+
+/* Audio Streaming IN Interface - Alt0 */
+static struct usb_interface_descriptor std_as_in_if0_desc = {
+	.bLength = sizeof std_as_in_if0_desc,
+	.bDescriptorType = USB_DT_INTERFACE,
+
+	.bAlternateSetting = 0,
+	.bNumEndpoints = 0,
+	.bInterfaceClass = USB_CLASS_AUDIO,
+	.bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING,
+	.bInterfaceProtocol = UAC_VERSION_2,
+};
+
+/* Audio Streaming IN Interface - Alt1 */
+static struct usb_interface_descriptor std_as_in_if1_desc = {
+	.bLength = sizeof std_as_in_if1_desc,
+	.bDescriptorType = USB_DT_INTERFACE,
+
+	.bAlternateSetting = 1,
+	.bNumEndpoints = 1,
+	.bInterfaceClass = USB_CLASS_AUDIO,
+	.bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING,
+	.bInterfaceProtocol = UAC_VERSION_2,
+};
+
+/* Audio Stream IN Intface Desc */
+struct uac2_as_header_descriptor as_in_hdr_desc = {
+	.bLength = sizeof as_in_hdr_desc,
+	.bDescriptorType = USB_DT_CS_INTERFACE,
+
+	.bDescriptorSubtype = UAC_AS_GENERAL,
+	.bTerminalLink = USB_IN_OT_ID,
+	.bmControls = 0,
+	.bFormatType = UAC_FORMAT_TYPE_I,
+	.bmFormats = cpu_to_le32(UAC_FORMAT_TYPE_I_PCM),
+	.iChannelNames = 0,
+};
+
+/* Audio USB_IN Format */
+struct uac2_format_type_i_descriptor as_in_fmt1_desc = {
+	.bLength = sizeof as_in_fmt1_desc,
+	.bDescriptorType = USB_DT_CS_INTERFACE,
+	.bDescriptorSubtype = UAC_FORMAT_TYPE,
+	.bFormatType = UAC_FORMAT_TYPE_I,
+};
+
+/* STD AS ISO IN Endpoint */
+struct usb_endpoint_descriptor fs_epin_desc = {
+	.bLength = USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType = USB_DT_ENDPOINT,
+
+	.bEndpointAddress = USB_DIR_IN,
+	.bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC,
+	.bInterval = 1,
+};
+
+struct usb_endpoint_descriptor hs_epin_desc = {
+	.bLength = USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType = USB_DT_ENDPOINT,
+
+	.bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC,
+	.bInterval = 4,
+};
+
+/* CS AS ISO IN Endpoint */
+static struct uac2_iso_endpoint_descriptor as_iso_in_desc = {
+	.bLength = sizeof as_iso_in_desc,
+	.bDescriptorType = USB_DT_CS_ENDPOINT,
+
+	.bDescriptorSubtype = UAC_EP_GENERAL,
+	.bmAttributes = 0,
+	.bmControls = 0,
+	.bLockDelayUnits = 0,
+	.wLockDelay = 0,
+};
+
+static struct usb_descriptor_header *fs_audio_desc[] = {
+	(struct usb_descriptor_header *)&iad_desc,
+	(struct usb_descriptor_header *)&std_ac_if_desc,
+
+	(struct usb_descriptor_header *)&ac_hdr_desc,
+	(struct usb_descriptor_header *)&in_clk_src_desc,
+	(struct usb_descriptor_header *)&out_clk_src_desc,
+	(struct usb_descriptor_header *)&usb_out_it_desc,
+	(struct usb_descriptor_header *)&io_in_it_desc,
+	(struct usb_descriptor_header *)&usb_in_ot_desc,
+	(struct usb_descriptor_header *)&io_out_ot_desc,
+
+	(struct usb_descriptor_header *)&std_as_out_if0_desc,
+	(struct usb_descriptor_header *)&std_as_out_if1_desc,
+
+	(struct usb_descriptor_header *)&as_out_hdr_desc,
+	(struct usb_descriptor_header *)&as_out_fmt1_desc,
+	(struct usb_descriptor_header *)&fs_epout_desc,
+	(struct usb_descriptor_header *)&as_iso_out_desc,
+
+	(struct usb_descriptor_header *)&std_as_in_if0_desc,
+	(struct usb_descriptor_header *)&std_as_in_if1_desc,
+
+	(struct usb_descriptor_header *)&as_in_hdr_desc,
+	(struct usb_descriptor_header *)&as_in_fmt1_desc,
+	(struct usb_descriptor_header *)&fs_epin_desc,
+	(struct usb_descriptor_header *)&as_iso_in_desc,
+	NULL,
+};
+
+static struct usb_descriptor_header *hs_audio_desc[] = {
+	(struct usb_descriptor_header *)&iad_desc,
+	(struct usb_descriptor_header *)&std_ac_if_desc,
+
+	(struct usb_descriptor_header *)&ac_hdr_desc,
+	(struct usb_descriptor_header *)&in_clk_src_desc,
+	(struct usb_descriptor_header *)&out_clk_src_desc,
+	(struct usb_descriptor_header *)&usb_out_it_desc,
+	(struct usb_descriptor_header *)&io_in_it_desc,
+	(struct usb_descriptor_header *)&usb_in_ot_desc,
+	(struct usb_descriptor_header *)&io_out_ot_desc,
+
+	(struct usb_descriptor_header *)&std_as_out_if0_desc,
+	(struct usb_descriptor_header *)&std_as_out_if1_desc,
+
+	(struct usb_descriptor_header *)&as_out_hdr_desc,
+	(struct usb_descriptor_header *)&as_out_fmt1_desc,
+	(struct usb_descriptor_header *)&hs_epout_desc,
+	(struct usb_descriptor_header *)&as_iso_out_desc,
+
+	(struct usb_descriptor_header *)&std_as_in_if0_desc,
+	(struct usb_descriptor_header *)&std_as_in_if1_desc,
+
+	(struct usb_descriptor_header *)&as_in_hdr_desc,
+	(struct usb_descriptor_header *)&as_in_fmt1_desc,
+	(struct usb_descriptor_header *)&hs_epin_desc,
+	(struct usb_descriptor_header *)&as_iso_in_desc,
+	NULL,
+};
+
+struct cntrl_cur_lay3 {
+	__u32	dCUR;
+};
+
+struct cntrl_range_lay3 {
+	__u16	wNumSubRanges;
+	__u32	dMIN;
+	__u32	dMAX;
+	__u32	dRES;
+} __packed;
+
+static inline void
+free_ep(struct uac2_rtd_params *prm, struct usb_ep *ep)
+{
+	struct snd_uac2_chip *uac2 = prm_to_uac2(prm);
+	int i;
+
+	prm->ep_enabled = false;
+
+	for (i = 0; i < USB_XFERS; i++) {
+		if (prm->ureq[i].req) {
+			usb_ep_dequeue(ep, prm->ureq[i].req);
+			usb_ep_free_request(ep, prm->ureq[i].req);
+			prm->ureq[i].req = NULL;
+		}
+	}
+
+	if (usb_ep_disable(ep))
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Error!\n", __func__, __LINE__);
+}
+
+static int __init
+afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
+{
+	struct audio_dev *agdev = func_to_agdev(fn);
+	struct snd_uac2_chip *uac2 = &agdev->uac2;
+	struct usb_composite_dev *cdev = cfg->cdev;
+	struct usb_gadget *gadget = cdev->gadget;
+	struct uac2_rtd_params *prm;
+	int ret;
+
+	ret = usb_interface_id(cfg, fn);
+	if (ret < 0) {
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Error!\n", __func__, __LINE__);
+		return ret;
+	}
+	std_ac_if_desc.bInterfaceNumber = ret;
+	ALT_SET(agdev->ac_alt, 0);
+	INTF_SET(agdev->ac_alt, ret);
+
+	ret = usb_interface_id(cfg, fn);
+	if (ret < 0) {
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Error!\n", __func__, __LINE__);
+		return ret;
+	}
+	std_as_out_if0_desc.bInterfaceNumber = ret;
+	std_as_out_if1_desc.bInterfaceNumber = ret;
+	ALT_SET(agdev->as_out_alt, 0);
+	INTF_SET(agdev->as_out_alt, ret);
+
+	ret = usb_interface_id(cfg, fn);
+	if (ret < 0) {
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Error!\n", __func__, __LINE__);
+		return ret;
+	}
+	std_as_in_if0_desc.bInterfaceNumber = ret;
+	std_as_in_if1_desc.bInterfaceNumber = ret;
+	ALT_SET(agdev->as_in_alt, 0);
+	INTF_SET(agdev->as_in_alt, ret);
+
+	agdev->out_ep = usb_ep_autoconfig(gadget, &fs_epout_desc);
+	if (!agdev->out_ep)
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Error!\n", __func__, __LINE__);
+	agdev->out_ep->driver_data = agdev;
+
+	agdev->in_ep = usb_ep_autoconfig(gadget, &fs_epin_desc);
+	if (!agdev->in_ep)
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Error!\n", __func__, __LINE__);
+	agdev->in_ep->driver_data = agdev;
+
+	hs_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress;
+	hs_epout_desc.wMaxPacketSize = fs_epout_desc.wMaxPacketSize;
+	hs_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress;
+	hs_epin_desc.wMaxPacketSize = fs_epin_desc.wMaxPacketSize;
+
+	fn->descriptors = usb_copy_descriptors(fs_audio_desc);
+	if (gadget_is_dualspeed(gadget))
+		fn->hs_descriptors = usb_copy_descriptors(hs_audio_desc);
+
+	prm = &agdev->uac2.c_prm;
+	prm->max_psize = hs_epout_desc.wMaxPacketSize;
+	prm->rbuf = kzalloc(prm->max_psize * USB_XFERS, GFP_KERNEL);
+	if (!prm->rbuf) {
+		prm->max_psize = 0;
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Error!\n", __func__, __LINE__);
+	}
+
+	prm = &agdev->uac2.p_prm;
+	prm->max_psize = hs_epin_desc.wMaxPacketSize;
+	prm->rbuf = kzalloc(prm->max_psize * USB_XFERS, GFP_KERNEL);
+	if (!prm->rbuf) {
+		prm->max_psize = 0;
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Error!\n", __func__, __LINE__);
+	}
+
+	return alsa_uac2_init(agdev);
+}
+
+static void
+afunc_unbind(struct usb_configuration *cfg, struct usb_function *fn)
+{
+	struct audio_dev *agdev = func_to_agdev(fn);
+	struct usb_composite_dev *cdev = cfg->cdev;
+	struct usb_gadget *gadget = cdev->gadget;
+	struct uac2_rtd_params *prm;
+
+	alsa_uac2_exit(agdev);
+
+	prm = &agdev->uac2.p_prm;
+	kfree(prm->rbuf);
+
+	prm = &agdev->uac2.c_prm;
+	kfree(prm->rbuf);
+
+	if (gadget_is_dualspeed(gadget))
+		usb_free_descriptors(fn->hs_descriptors);
+	usb_free_descriptors(fn->descriptors);
+
+	if (agdev->in_ep)
+		agdev->in_ep->driver_data = NULL;
+	if (agdev->out_ep)
+		agdev->out_ep->driver_data = NULL;
+}
+
+static int
+afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt)
+{
+	struct usb_composite_dev *cdev = fn->config->cdev;
+	struct audio_dev *agdev = func_to_agdev(fn);
+	struct snd_uac2_chip *uac2 = &agdev->uac2;
+	struct usb_gadget *gadget = cdev->gadget;
+	struct usb_request *req;
+	struct usb_ep *ep;
+	struct uac2_rtd_params *prm;
+	int i;
+
+	/* No i/f has more than 2 alt settings */
+	if (alt > 1) {
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Error!\n", __func__, __LINE__);
+		return -EINVAL;
+	}
+
+	if (intf == INTF_GET(agdev->ac_alt)) {
+		/* Control I/f has only 1 AltSetting - 0 */
+		if (alt) {
+			dev_err(&uac2->pdev.dev,
+				"%s:%d Error!\n", __func__, __LINE__);
+			return -EINVAL;
+		}
+		return 0;
+	}
+
+	if (intf == INTF_GET(agdev->as_out_alt)) {
+		ep = agdev->out_ep;
+		prm = &uac2->c_prm;
+		config_ep_by_speed(gadget, fn, ep);
+		ALT_SET(agdev->as_out_alt, alt);
+	} else if (intf == INTF_GET(agdev->as_in_alt)) {
+		ep = agdev->in_ep;
+		prm = &uac2->p_prm;
+		config_ep_by_speed(gadget, fn, ep);
+		ALT_SET(agdev->as_in_alt, alt);
+	} else {
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Error!\n", __func__, __LINE__);
+		return -EINVAL;
+	}
+
+	if (alt == 0) {
+		free_ep(prm, ep);
+		return 0;
+	}
+
+	prm->ep_enabled = true;
+	usb_ep_enable(ep);
+
+	for (i = 0; i < USB_XFERS; i++) {
+		if (prm->ureq[i].req) {
+			if (usb_ep_queue(ep, prm->ureq[i].req, GFP_ATOMIC))
+				dev_err(&uac2->pdev.dev, "%d Error!\n",
+					__LINE__);
+			continue;
+		}
+
+		req = usb_ep_alloc_request(ep, GFP_ATOMIC);
+		if (req == NULL) {
+			dev_err(&uac2->pdev.dev,
+				"%s:%d Error!\n", __func__, __LINE__);
+			return -EINVAL;
+		}
+
+		prm->ureq[i].req = req;
+		prm->ureq[i].pp = prm;
+
+		req->zero = 0;
+		req->dma = DMA_ADDR_INVALID;
+		req->context = &prm->ureq[i];
+		req->length = prm->max_psize;
+		req->complete =	agdev_iso_complete;
+		req->buf = prm->rbuf + i * req->length;
+
+		if (usb_ep_queue(ep, req, GFP_ATOMIC))
+			dev_err(&uac2->pdev.dev, "%d Error!\n", __LINE__);
+	}
+
+	return 0;
+}
+
+static int
+afunc_get_alt(struct usb_function *fn, unsigned intf)
+{
+	struct audio_dev *agdev = func_to_agdev(fn);
+	struct snd_uac2_chip *uac2 = &agdev->uac2;
+
+	if (intf == INTF_GET(agdev->ac_alt))
+		return ALT_GET(agdev->ac_alt);
+	else if (intf == INTF_GET(agdev->as_out_alt))
+		return ALT_GET(agdev->as_out_alt);
+	else if (intf == INTF_GET(agdev->as_in_alt))
+		return ALT_GET(agdev->as_in_alt);
+	else
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Invalid Interface %d!\n",
+			__func__, __LINE__, intf);
+
+	return -EINVAL;
+}
+
+static void
+afunc_disable(struct usb_function *fn)
+{
+	struct audio_dev *agdev = func_to_agdev(fn);
+	struct snd_uac2_chip *uac2 = &agdev->uac2;
+
+	free_ep(&uac2->p_prm, agdev->in_ep);
+	ALT_SET(agdev->as_in_alt, 0);
+
+	free_ep(&uac2->c_prm, agdev->out_ep);
+	ALT_SET(agdev->as_out_alt, 0);
+}
+
+static int
+in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr)
+{
+	struct usb_request *req = fn->config->cdev->req;
+	struct audio_dev *agdev = func_to_agdev(fn);
+	struct snd_uac2_chip *uac2 = &agdev->uac2;
+	u16 w_length = le16_to_cpu(cr->wLength);
+	u16 w_index = le16_to_cpu(cr->wIndex);
+	u16 w_value = le16_to_cpu(cr->wValue);
+	u8 entity_id = (w_index >> 8) & 0xff;
+	u8 control_selector = w_value >> 8;
+	int value = -EOPNOTSUPP;
+
+	if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) {
+		struct cntrl_cur_lay3 c;
+
+		if (entity_id == USB_IN_CLK_ID)
+			c.dCUR = p_srate;
+		else if (entity_id == USB_OUT_CLK_ID)
+			c.dCUR = c_srate;
+
+		value = min_t(unsigned, w_length, sizeof c);
+		memcpy(req->buf, &c, value);
+	} else if (control_selector == UAC2_CS_CONTROL_CLOCK_VALID) {
+		*(u8 *)req->buf = 1;
+		value = min_t(unsigned, w_length, 1);
+	} else {
+		dev_err(&uac2->pdev.dev,
+			"%s:%d control_selector=%d TODO!\n",
+			__func__, __LINE__, control_selector);
+	}
+
+	return value;
+}
+
+static int
+in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr)
+{
+	struct usb_request *req = fn->config->cdev->req;
+	struct audio_dev *agdev = func_to_agdev(fn);
+	struct snd_uac2_chip *uac2 = &agdev->uac2;
+	u16 w_length = le16_to_cpu(cr->wLength);
+	u16 w_index = le16_to_cpu(cr->wIndex);
+	u16 w_value = le16_to_cpu(cr->wValue);
+	u8 entity_id = (w_index >> 8) & 0xff;
+	u8 control_selector = w_value >> 8;
+	struct cntrl_range_lay3 r;
+	int value = -EOPNOTSUPP;
+
+	if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) {
+		if (entity_id == USB_IN_CLK_ID)
+			r.dMIN = p_srate;
+		else if (entity_id == USB_OUT_CLK_ID)
+			r.dMIN = c_srate;
+		else
+			return -EOPNOTSUPP;
+
+		r.dMAX = r.dMIN;
+		r.dRES = 0;
+		r.wNumSubRanges = 1;
+
+		value = min_t(unsigned, w_length, sizeof r);
+		memcpy(req->buf, &r, value);
+	} else {
+		dev_err(&uac2->pdev.dev,
+			"%s:%d control_selector=%d TODO!\n",
+			__func__, __LINE__, control_selector);
+	}
+
+	return value;
+}
+
+static int
+ac_rq_in(struct usb_function *fn, const struct usb_ctrlrequest *cr)
+{
+	if (cr->bRequest == UAC2_CS_CUR)
+		return in_rq_cur(fn, cr);
+	else if (cr->bRequest == UAC2_CS_RANGE)
+		return in_rq_range(fn, cr);
+	else
+		return -EOPNOTSUPP;
+}
+
+static int
+out_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr)
+{
+	u16 w_length = le16_to_cpu(cr->wLength);
+	u16 w_value = le16_to_cpu(cr->wValue);
+	u8 control_selector = w_value >> 8;
+
+	if (control_selector == UAC2_CS_CONTROL_SAM_FREQ)
+		return w_length;
+
+	return -EOPNOTSUPP;
+}
+
+static int
+setup_rq_inf(struct usb_function *fn, const struct usb_ctrlrequest *cr)
+{
+	struct audio_dev *agdev = func_to_agdev(fn);
+	struct snd_uac2_chip *uac2 = &agdev->uac2;
+	u16 w_index = le16_to_cpu(cr->wIndex);
+	u8 intf = w_index & 0xff;
+
+	if (intf != INTF_GET(agdev->ac_alt)) {
+		dev_err(&uac2->pdev.dev,
+			"%s:%d Error!\n", __func__, __LINE__);
+		return -EOPNOTSUPP;
+	}
+
+	if (cr->bRequestType & USB_DIR_IN)
+		return ac_rq_in(fn, cr);
+	else if (cr->bRequest == UAC2_CS_CUR)
+		return out_rq_cur(fn, cr);
+
+	return -EOPNOTSUPP;
+}
+
+static int
+afunc_setup(struct usb_function *fn, const struct usb_ctrlrequest *cr)
+{
+	struct usb_composite_dev *cdev = fn->config->cdev;
+	struct audio_dev *agdev = func_to_agdev(fn);
+	struct snd_uac2_chip *uac2 = &agdev->uac2;
+	struct usb_request *req = cdev->req;
+	u16 w_length = le16_to_cpu(cr->wLength);
+	int value = -EOPNOTSUPP;
+
+	/* Only Class specific requests are supposed to reach here */
+	if ((cr->bRequestType & USB_TYPE_MASK) != USB_TYPE_CLASS)
+		return -EOPNOTSUPP;
+
+	if ((cr->bRequestType & USB_RECIP_MASK) == USB_RECIP_INTERFACE)
+		value = setup_rq_inf(fn, cr);
+	else
+		dev_err(&uac2->pdev.dev, "%s:%d Error!\n", __func__, __LINE__);
+
+	if (value >= 0) {
+		req->length = value;
+		req->zero = value < w_length;
+		value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC);
+		if (value < 0) {
+			dev_err(&uac2->pdev.dev,
+				"%s:%d Error!\n", __func__, __LINE__);
+			req->status = 0;
+		}
+	}
+
+	return value;
+}
+
+static int audio_bind_config(struct usb_configuration *cfg)
+{
+	int id, res;
+
+	agdev_g = kzalloc(sizeof *agdev_g, GFP_KERNEL);
+	if (agdev_g == NULL) {
+		printk(KERN_ERR "Unable to allocate audio gadget\n");
+		return -ENOMEM;
+	}
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_ASSOC].id = id;
+	iad_desc.iFunction = id,
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_IF_CTRL].id = id;
+	std_ac_if_desc.iInterface = id,
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_CLKSRC_IN].id = id;
+	in_clk_src_desc.iClockSource = id,
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_CLKSRC_OUT].id = id;
+	out_clk_src_desc.iClockSource = id,
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_USB_IT].id = id;
+	usb_out_it_desc.iTerminal = id,
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_IO_IT].id = id;
+	io_in_it_desc.iTerminal = id;
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_USB_OT].id = id;
+	usb_in_ot_desc.iTerminal = id;
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_IO_OT].id = id;
+	io_out_ot_desc.iTerminal = id;
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_AS_OUT_ALT0].id = id;
+	std_as_out_if0_desc.iInterface = id;
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_AS_OUT_ALT1].id = id;
+	std_as_out_if1_desc.iInterface = id;
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_AS_IN_ALT0].id = id;
+	std_as_in_if0_desc.iInterface = id;
+
+	id = usb_string_id(cfg->cdev);
+	if (id < 0)
+		return id;
+
+	strings_fn[STR_AS_IN_ALT1].id = id;
+	std_as_in_if1_desc.iInterface = id;
+
+	agdev_g->func.name = "uac2_func";
+	agdev_g->func.strings = fn_strings;
+	agdev_g->func.bind = afunc_bind;
+	agdev_g->func.unbind = afunc_unbind;
+	agdev_g->func.set_alt = afunc_set_alt;
+	agdev_g->func.get_alt = afunc_get_alt;
+	agdev_g->func.disable = afunc_disable;
+	agdev_g->func.setup = afunc_setup;
+
+	/* Initialize the configurable parameters */
+	usb_out_it_desc.bNrChannels = num_channels(c_chmask);
+	usb_out_it_desc.bmChannelConfig = cpu_to_le32(c_chmask);
+	io_in_it_desc.bNrChannels = num_channels(p_chmask);
+	io_in_it_desc.bmChannelConfig = cpu_to_le32(p_chmask);
+	as_out_hdr_desc.bNrChannels = num_channels(c_chmask);
+	as_out_hdr_desc.bmChannelConfig = cpu_to_le32(c_chmask);
+	as_in_hdr_desc.bNrChannels = num_channels(p_chmask);
+	as_in_hdr_desc.bmChannelConfig = cpu_to_le32(p_chmask);
+	as_out_fmt1_desc.bSubslotSize = c_ssize;
+	as_out_fmt1_desc.bBitResolution = c_ssize * 8;
+	as_in_fmt1_desc.bSubslotSize = p_ssize;
+	as_in_fmt1_desc.bBitResolution = p_ssize * 8;
+
+	snprintf(clksrc_in, sizeof(clksrc_in), "%uHz", p_srate);
+	snprintf(clksrc_out, sizeof(clksrc_out), "%uHz", c_srate);
+
+	res = usb_add_function(cfg, &agdev_g->func);
+	if (res < 0)
+		kfree(agdev_g);
+
+	return res;
+}
+
+static void
+uac2_unbind_config(struct usb_configuration *cfg)
+{
+	kfree(agdev_g);
+	agdev_g = NULL;
+}

drivers/usb/gadget/file_storage.c

@@ -855,7 +855,7 @@ static int class_setup_req(struct fsg_dev *fsg,
 	if (transport_is_bbb()) {
 		switch (ctrl->bRequest) {
 
-		case USB_BULK_RESET_REQUEST:
+		case US_BULK_RESET_REQUEST:
 			if (ctrl->bRequestType != (USB_DIR_OUT |
 					USB_TYPE_CLASS | USB_RECIP_INTERFACE))
 				break;
@@ -871,7 +871,7 @@ static int class_setup_req(struct fsg_dev *fsg,
 			value = DELAYED_STATUS;
 			break;
 
-		case USB_BULK_GET_MAX_LUN_REQUEST:
+		case US_BULK_GET_MAX_LUN:
 			if (ctrl->bRequestType != (USB_DIR_IN |
 					USB_TYPE_CLASS | USB_RECIP_INTERFACE))
 				break;
@@ -2125,7 +2125,7 @@ static int send_status(struct fsg_dev *fsg)
 	struct fsg_lun		*curlun = fsg->curlun;
 	struct fsg_buffhd	*bh;
 	int			rc;
-	u8			status = USB_STATUS_PASS;
+	u8			status = US_BULK_STAT_OK;
 	u32			sd, sdinfo = 0;
 
 	/* Wait for the next buffer to become available */
@@ -2146,11 +2146,11 @@ static int send_status(struct fsg_dev *fsg)
 
 	if (fsg->phase_error) {
 		DBG(fsg, "sending phase-error status\n");
-		status = USB_STATUS_PHASE_ERROR;
+		status = US_BULK_STAT_PHASE;
 		sd = SS_INVALID_COMMAND;
 	} else if (sd != SS_NO_SENSE) {
 		DBG(fsg, "sending command-failure status\n");
-		status = USB_STATUS_FAIL;
+		status = US_BULK_STAT_FAIL;
 		VDBG(fsg, "  sense data: SK x%02x, ASC x%02x, ASCQ x%02x;"
 				"  info x%x\n",
 				SK(sd), ASC(sd), ASCQ(sd), sdinfo);
@@ -2160,12 +2160,12 @@ static int send_status(struct fsg_dev *fsg)
 		struct bulk_cs_wrap	*csw = bh->buf;
 
 		/* Store and send the Bulk-only CSW */
-		csw->Signature = cpu_to_le32(USB_BULK_CS_SIG);
+		csw->Signature = cpu_to_le32(US_BULK_CS_SIGN);
 		csw->Tag = fsg->tag;
 		csw->Residue = cpu_to_le32(fsg->residue);
 		csw->Status = status;
 
-		bh->inreq->length = USB_BULK_CS_WRAP_LEN;
+		bh->inreq->length = US_BULK_CS_WRAP_LEN;
 		bh->inreq->zero = 0;
 		start_transfer(fsg, fsg->bulk_in, bh->inreq,
 				&bh->inreq_busy, &bh->state);
@@ -2609,16 +2609,16 @@ static int do_scsi_command(struct fsg_dev *fsg)
 static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
 {
 	struct usb_request		*req = bh->outreq;
-	struct fsg_bulk_cb_wrap	*cbw = req->buf;
+	struct bulk_cb_wrap	*cbw = req->buf;
 
 	/* Was this a real packet?  Should it be ignored? */
 	if (req->status || test_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags))
 		return -EINVAL;
 
 	/* Is the CBW valid? */
-	if (req->actual != USB_BULK_CB_WRAP_LEN ||
+	if (req->actual != US_BULK_CB_WRAP_LEN ||
 			cbw->Signature != cpu_to_le32(
-				USB_BULK_CB_SIG)) {
+				US_BULK_CB_SIGN)) {
 		DBG(fsg, "invalid CBW: len %u sig 0x%x\n",
 				req->actual,
 				le32_to_cpu(cbw->Signature));
@@ -2638,7 +2638,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
 	}
 
 	/* Is the CBW meaningful? */
-	if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~USB_BULK_IN_FLAG ||
+	if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~US_BULK_FLAG_IN ||
 			cbw->Length <= 0 || cbw->Length > MAX_COMMAND_SIZE) {
 		DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, "
 				"cmdlen %u\n",
@@ -2656,7 +2656,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
 	/* Save the command for later */
 	fsg->cmnd_size = cbw->Length;
 	memcpy(fsg->cmnd, cbw->CDB, fsg->cmnd_size);
-	if (cbw->Flags & USB_BULK_IN_FLAG)
+	if (cbw->Flags & US_BULK_FLAG_IN)
 		fsg->data_dir = DATA_DIR_TO_HOST;
 	else
 		fsg->data_dir = DATA_DIR_FROM_HOST;
@@ -2685,7 +2685,7 @@ static int get_next_command(struct fsg_dev *fsg)
 		}
 
 		/* Queue a request to read a Bulk-only CBW */
-		set_bulk_out_req_length(fsg, bh, USB_BULK_CB_WRAP_LEN);
+		set_bulk_out_req_length(fsg, bh, US_BULK_CB_WRAP_LEN);
 		start_transfer(fsg, fsg->bulk_out, bh->outreq,
 				&bh->outreq_busy, &bh->state);
 

drivers/usb/gadget/fsl_qe_udc.c

@@ -1638,6 +1638,7 @@ static int qe_ep_disable(struct usb_ep *_ep)
 	/* Nuke all pending requests (does flush) */
 	nuke(ep, -ESHUTDOWN);
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 	ep->stopped = 1;
 	ep->tx_req = NULL;
 	qe_ep_reset(udc, ep->epnum);

drivers/usb/gadget/fsl_udc_core.c

@@ -659,6 +659,7 @@ static int fsl_ep_disable(struct usb_ep *_ep)
 	nuke(ep, -ESHUTDOWN);
 
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 	ep->stopped = 1;
 	spin_unlock_irqrestore(&udc->lock, flags);
 
@@ -768,7 +769,7 @@ static void fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req)
  * @is_last: return flag if it is the last dTD of the request
  * return: pointer to the built dTD */
 static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length,
-		dma_addr_t *dma, int *is_last)
+		dma_addr_t *dma, int *is_last, gfp_t gfp_flags)
 {
 	u32 swap_temp;
 	struct ep_td_struct *dtd;
@@ -777,7 +778,7 @@ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length,
 	*length = min(req->req.length - req->req.actual,
 			(unsigned)EP_MAX_LENGTH_TRANSFER);
 
-	dtd = dma_pool_alloc(udc_controller->td_pool, GFP_KERNEL, dma);
+	dtd = dma_pool_alloc(udc_controller->td_pool, gfp_flags, dma);
 	if (dtd == NULL)
 		return dtd;
 
@@ -827,7 +828,7 @@ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length,
 }
 
 /* Generate dtd chain for a request */
-static int fsl_req_to_dtd(struct fsl_req *req)
+static int fsl_req_to_dtd(struct fsl_req *req, gfp_t gfp_flags)
 {
 	unsigned	count;
 	int		is_last;
@@ -836,7 +837,7 @@ static int fsl_req_to_dtd(struct fsl_req *req)
 	dma_addr_t dma;
 
 	do {
-		dtd = fsl_build_dtd(req, &count, &dma, &is_last);
+		dtd = fsl_build_dtd(req, &count, &dma, &is_last, gfp_flags);
 		if (dtd == NULL)
 			return -ENOMEM;
 
@@ -910,13 +911,11 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
 	req->req.actual = 0;
 	req->dtd_count = 0;
 
-	spin_lock_irqsave(&udc->lock, flags);
-
 	/* build dtds and push them to device queue */
-	if (!fsl_req_to_dtd(req)) {
+	if (!fsl_req_to_dtd(req, gfp_flags)) {
+		spin_lock_irqsave(&udc->lock, flags);
 		fsl_queue_td(ep, req);
 	} else {
-		spin_unlock_irqrestore(&udc->lock, flags);
 		return -ENOMEM;
 	}
 
@@ -1217,7 +1216,7 @@ static int fsl_vbus_draw(struct usb_gadget *gadget, unsigned mA)
 
 	udc = container_of(gadget, struct fsl_udc, gadget);
 	if (udc->transceiver)
-		return otg_set_power(udc->transceiver, mA);
+		return usb_phy_set_power(udc->transceiver, mA);
 	return -ENOTSUPP;
 }
 
@@ -1295,7 +1294,7 @@ static int ep0_prime_status(struct fsl_udc *udc, int direction)
 			ep_is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
 	req->mapped = 1;
 
-	if (fsl_req_to_dtd(req) == 0)
+	if (fsl_req_to_dtd(req, GFP_ATOMIC) == 0)
 		fsl_queue_td(ep, req);
 	else
 		return -ENOMEM;
@@ -1379,7 +1378,7 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value,
 	req->mapped = 1;
 
 	/* prime the data phase */
-	if ((fsl_req_to_dtd(req) == 0))
+	if ((fsl_req_to_dtd(req, GFP_ATOMIC) == 0))
 		fsl_queue_td(ep, req);
 	else			/* no mem */
 		goto stall;
@@ -1966,7 +1965,8 @@ static int fsl_start(struct usb_gadget_driver *driver,
 
 		/* connect to bus through transceiver */
 		if (udc_controller->transceiver) {
-			retval = otg_set_peripheral(udc_controller->transceiver,
+			retval = otg_set_peripheral(
+					udc_controller->transceiver->otg,
 						    &udc_controller->gadget);
 			if (retval < 0) {
 				ERR("can't bind to transceiver\n");
@@ -2006,7 +2006,7 @@ static int fsl_stop(struct usb_gadget_driver *driver)
 		return -EINVAL;
 
 	if (udc_controller->transceiver)
-		otg_set_peripheral(udc_controller->transceiver, NULL);
+		otg_set_peripheral(udc_controller->transceiver->otg, NULL);
 
 	/* stop DR, disable intr */
 	dr_controller_stop(udc_controller);
@@ -2430,7 +2430,7 @@ static int __init fsl_udc_probe(struct platform_device *pdev)
 
 #ifdef CONFIG_USB_OTG
 	if (pdata->operating_mode == FSL_USB2_DR_OTG) {
-		udc_controller->transceiver = otg_get_transceiver();
+		udc_controller->transceiver = usb_get_transceiver();
 		if (!udc_controller->transceiver) {
 			ERR("Can't find OTG driver!\n");
 			ret = -ENODEV;

drivers/usb/gadget/fsl_usb2_udc.h

@@ -471,7 +471,7 @@ struct fsl_udc {
 
 	struct usb_ctrlrequest local_setup_buff;
 	spinlock_t lock;
-	struct otg_transceiver *transceiver;
+	struct usb_phy *transceiver;
 	unsigned softconnect:1;
 	unsigned vbus_active:1;
 	unsigned stopped:1;

drivers/usb/gadget/g_ffs.c

@@ -2,7 +2,7 @@
  * g_ffs.c -- user mode file system API for USB composite function controllers
  *
  * Copyright (C) 2010 Samsung Electronics
- * Author: Michal Nazarewicz <m.nazarewicz@samsung.com>
+ * Author: Michal Nazarewicz <mina86@mina86.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

drivers/usb/gadget/goku_udc.c

@@ -235,6 +235,7 @@ static void ep_reset(struct goku_udc_regs __iomem *regs, struct goku_ep *ep)
 
 	ep->ep.maxpacket = MAX_FIFO_SIZE;
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 	ep->stopped = 1;
 	ep->irqs = 0;
 	ep->dma = 0;
@@ -310,12 +311,9 @@ done(struct goku_ep *ep, struct goku_request *req, int status)
 		status = req->req.status;
 
 	dev = ep->dev;
-	if (req->mapped) {
-		pci_unmap_single(dev->pdev, req->req.dma, req->req.length,
-			ep->is_in ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
-		req->req.dma = DMA_ADDR_INVALID;
-		req->mapped = 0;
-	}
+
+	if (ep->dma)
+		usb_gadget_unmap_request(&dev->gadget, &req->req, ep->is_in);
 
 #ifndef USB_TRACE
 	if (status && status != -ESHUTDOWN)
@@ -736,10 +734,11 @@ goku_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
 		return -EBUSY;
 
 	/* set up dma mapping in case the caller didn't */
-	if (ep->dma && _req->dma == DMA_ADDR_INVALID) {
-		_req->dma = pci_map_single(dev->pdev, _req->buf, _req->length,
-			ep->is_in ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
-		req->mapped = 1;
+	if (ep->dma) {
+		status = usb_gadget_map_request(&dev->gadget, &req->req,
+				ep->is_in);
+		if (status)
+			return status;
 	}
 
 #ifdef USB_TRACE

drivers/usb/gadget/hid.c

@@ -60,9 +60,9 @@ static struct usb_device_descriptor device_desc = {
 	/* .bDeviceClass =		USB_CLASS_COMM, */
 	/* .bDeviceSubClass =	0, */
 	/* .bDeviceProtocol =	0, */
-	.bDeviceClass =		0xEF,
-	.bDeviceSubClass =	2,
-	.bDeviceProtocol =	1,
+	.bDeviceClass =		USB_CLASS_PER_INTERFACE,
+	.bDeviceSubClass =	0,
+	.bDeviceProtocol =	0,
 	/* .bMaxPacketSize0 = f(hardware) */
 
 	/* Vendor and product id can be overridden by module parameters.  */

drivers/usb/gadget/inode.c

@@ -1043,6 +1043,8 @@ ep0_read (struct file *fd, char __user *buf, size_t len, loff_t *ptr)
 // FIXME don't call this with the spinlock held ...
 				if (copy_to_user (buf, dev->req->buf, len))
 					retval = -EFAULT;
+				else
+					retval = len;
 				clean_req (dev->gadget->ep0, dev->req);
 				/* NOTE userspace can't yet choose to stall */
 			}

drivers/usb/gadget/langwell_udc.c

@@ -401,16 +401,7 @@ static void done(struct langwell_ep *ep, struct langwell_request *req,
 		dma_pool_free(dev->dtd_pool, curr_dtd, curr_dtd->dtd_dma);
 	}
 
-	if (req->mapped) {
-		dma_unmap_single(&dev->pdev->dev,
-			req->req.dma, req->req.length,
-			is_in(ep) ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
-		req->req.dma = DMA_ADDR_INVALID;
-		req->mapped = 0;
-	} else
-		dma_sync_single_for_cpu(&dev->pdev->dev, req->req.dma,
-				req->req.length,
-				is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+	usb_gadget_unmap_request(&dev->gadget, &req->req, is_in(ep));
 
 	if (status != -ESHUTDOWN)
 		dev_dbg(&dev->pdev->dev,
@@ -487,6 +478,7 @@ static int langwell_ep_disable(struct usb_ep *_ep)
 	nuke(ep, -ESHUTDOWN);
 
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 	ep->stopped = 1;
 
 	spin_unlock_irqrestore(&dev->lock, flags);
@@ -749,7 +741,8 @@ static int langwell_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
 	struct langwell_ep	*ep;
 	struct langwell_udc	*dev;
 	unsigned long		flags;
-	int			is_iso = 0, zlflag = 0;
+	int			is_iso = 0;
+	int			ret;
 
 	/* always require a cpu-view buffer */
 	req = container_of(_req, struct langwell_request, req);
@@ -776,33 +769,10 @@ static int langwell_ep_queue(struct usb_ep *_ep, struct usb_request *_req,
 	if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN))
 		return -ESHUTDOWN;
 
-	/* set up dma mapping in case the caller didn't */
-	if (_req->dma == DMA_ADDR_INVALID) {
-		/* WORKAROUND: WARN_ON(size == 0) */
-		if (_req->length == 0) {
-			dev_vdbg(&dev->pdev->dev, "req->length: 0->1\n");
-			zlflag = 1;
-			_req->length++;
-		}
-
-		_req->dma = dma_map_single(&dev->pdev->dev,
-				_req->buf, _req->length,
-				is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-		if (zlflag && (_req->length == 1)) {
-			dev_vdbg(&dev->pdev->dev, "req->length: 1->0\n");
-			zlflag = 0;
-			_req->length = 0;
-		}
-
-		req->mapped = 1;
-		dev_vdbg(&dev->pdev->dev, "req->mapped = 1\n");
-	} else {
-		dma_sync_single_for_device(&dev->pdev->dev,
-				_req->dma, _req->length,
-				is_in(ep) ?  DMA_TO_DEVICE : DMA_FROM_DEVICE);
-		req->mapped = 0;
-		dev_vdbg(&dev->pdev->dev, "req->mapped = 0\n");
-	}
+	/* set up dma mapping */
+	ret = usb_gadget_map_request(&dev->gadget, &req->req, is_in(ep));
+	if (ret)
+		return ret;
 
 	dev_dbg(&dev->pdev->dev,
 			"%s queue req %p, len %u, buf %p, dma 0x%08x\n",
@@ -1261,9 +1231,9 @@ static int langwell_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
 	dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__);
 
 	if (dev->transceiver) {
-		dev_vdbg(&dev->pdev->dev, "otg_set_power\n");
+		dev_vdbg(&dev->pdev->dev, "usb_phy_set_power\n");
 		dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__);
-		return otg_set_power(dev->transceiver, mA);
+		return usb_phy_set_power(dev->transceiver, mA);
 	}
 
 	dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__);
@@ -1906,7 +1876,7 @@ static int langwell_stop(struct usb_gadget *g,
 
 	/* unbind OTG transceiver */
 	if (dev->transceiver)
-		(void)otg_set_peripheral(dev->transceiver, 0);
+		(void)otg_set_peripheral(dev->transceiver->otg, 0);
 
 	/* disable interrupt and set controller to stop state */
 	langwell_udc_stop(dev);

drivers/usb/gadget/langwell_udc.h

@@ -162,7 +162,7 @@ struct langwell_udc {
 	spinlock_t		lock;	/* device lock */
 	struct langwell_ep	*ep;
 	struct usb_gadget_driver	*driver;
-	struct otg_transceiver	*transceiver;
+	struct usb_phy		*transceiver;
 	u8			dev_addr;
 	u32			usb_state;
 	u32			resume_state;

drivers/usb/gadget/mass_storage.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2003-2008 Alan Stern
  * Copyright (C) 2009 Samsung Electronics
- *                    Author: Michal Nazarewicz <m.nazarewicz@samsung.com>
+ *                    Author: Michal Nazarewicz <mina86@mina86.com>
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify

drivers/usb/gadget/multi.c

@@ -4,7 +4,7 @@
  * Copyright (C) 2008 David Brownell
  * Copyright (C) 2008 Nokia Corporation
  * Copyright (C) 2009 Samsung Electronics
- * Author: Michal Nazarewicz (m.nazarewicz@samsung.com)
+ * Author: Michal Nazarewicz (mina86@mina86.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

drivers/usb/gadget/mv_udc.h

@@ -217,7 +217,7 @@ struct mv_udc {
 	struct work_struct	vbus_work;
 	struct workqueue_struct *qwork;
 
-	struct otg_transceiver	*transceiver;
+	struct usb_phy		*transceiver;
 
 	struct mv_usb_platform_data     *pdata;
 

drivers/usb/gadget/mv_udc_core.c

@@ -608,6 +608,7 @@ static int  mv_ep_disable(struct usb_ep *_ep)
 	nuke(ep, -ESHUTDOWN);
 
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 	ep->stopped = 1;
 
 	spin_unlock_irqrestore(&udc->lock, flags);
@@ -771,8 +772,7 @@ mv_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
 		udc->ep0_state = DATA_STATE_XMIT;
 
 	/* irq handler advances the queue */
-	if (req != NULL)
-		list_add_tail(&req->queue, &ep->queue);
+	list_add_tail(&req->queue, &ep->queue);
 	spin_unlock_irqrestore(&udc->lock, flags);
 
 	return 0;
@@ -1384,7 +1384,8 @@ static int mv_udc_start(struct usb_gadget_driver *driver,
 	}
 
 	if (udc->transceiver) {
-		retval = otg_set_peripheral(udc->transceiver, &udc->gadget);
+		retval = otg_set_peripheral(udc->transceiver->otg,
+					&udc->gadget);
 		if (retval) {
 			dev_err(&udc->dev->dev,
 				"unable to register peripheral to otg\n");
@@ -2181,7 +2182,7 @@ static int __devinit mv_udc_probe(struct platform_device *dev)
 
 #ifdef CONFIG_USB_OTG_UTILS
 	if (pdata->mode == MV_USB_MODE_OTG)
-		udc->transceiver = otg_get_transceiver();
+		udc->transceiver = usb_get_transceiver();
 #endif
 
 	udc->clknum = pdata->clknum;

drivers/usb/gadget/net2272.c

@@ -385,12 +385,9 @@ net2272_done(struct net2272_ep *ep, struct net2272_request *req, int status)
 		status = req->req.status;
 
 	dev = ep->dev;
-	if (use_dma && req->mapped) {
-		dma_unmap_single(dev->dev, req->req.dma, req->req.length,
-			ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-		req->req.dma = DMA_ADDR_INVALID;
-		req->mapped = 0;
-	}
+	if (use_dma && ep->dma)
+		usb_gadget_unmap_request(&dev->gadget, &req->req,
+				ep->is_in);
 
 	if (status && status != -ESHUTDOWN)
 		dev_vdbg(dev->dev, "complete %s req %p stat %d len %u/%u buf %p\n",
@@ -850,10 +847,11 @@ net2272_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
 		return -ESHUTDOWN;
 
 	/* set up dma mapping in case the caller didn't */
-	if (use_dma && ep->dma && _req->dma == DMA_ADDR_INVALID) {
-		_req->dma = dma_map_single(dev->dev, _req->buf, _req->length,
-			ep->is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-		req->mapped = 1;
+	if (use_dma && ep->dma) {
+		status = usb_gadget_map_request(&dev->gadget, _req,
+				ep->is_in);
+		if (status)
+			return status;
 	}
 
 	dev_vdbg(dev->dev, "%s queue req %p, len %d buf %p dma %08llx %s\n",

drivers/usb/gadget/net2280.c

@@ -806,12 +806,8 @@ done (struct net2280_ep *ep, struct net2280_request *req, int status)
 		status = req->req.status;
 
 	dev = ep->dev;
-	if (req->mapped) {
-		pci_unmap_single (dev->pdev, req->req.dma, req->req.length,
-			ep->is_in ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
-		req->req.dma = DMA_ADDR_INVALID;
-		req->mapped = 0;
-	}
+	if (ep->dma)
+		usb_gadget_unmap_request(&dev->gadget, &req->req, ep->is_in);
 
 	if (status && status != -ESHUTDOWN)
 		VDEBUG (dev, "complete %s req %p stat %d len %u/%u\n",
@@ -857,10 +853,13 @@ net2280_queue (struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
 		return -EOPNOTSUPP;
 
 	/* set up dma mapping in case the caller didn't */
-	if (ep->dma && _req->dma == DMA_ADDR_INVALID) {
-		_req->dma = pci_map_single (dev->pdev, _req->buf, _req->length,
-			ep->is_in ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
-		req->mapped = 1;
+	if (ep->dma) {
+		int ret;
+
+		ret = usb_gadget_map_request(&dev->gadget, _req,
+				ep->is_in);
+		if (ret)
+			return ret;
 	}
 
 #if 0

drivers/usb/gadget/omap_udc.c

@@ -251,6 +251,7 @@ static int omap_ep_disable(struct usb_ep *_ep)
 
 	spin_lock_irqsave(&ep->udc->lock, flags);
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 	nuke (ep, -ESHUTDOWN);
 	ep->ep.maxpacket = ep->maxpacket;
 	ep->has_dma = 0;
@@ -1213,7 +1214,7 @@ static int omap_wakeup(struct usb_gadget *gadget)
 	/* NOTE:  non-OTG systems may use SRP TOO... */
 	} else if (!(udc->devstat & UDC_ATT)) {
 		if (udc->transceiver)
-			retval = otg_start_srp(udc->transceiver);
+			retval = otg_start_srp(udc->transceiver->otg);
 	}
 	spin_unlock_irqrestore(&udc->lock, flags);
 
@@ -1345,7 +1346,7 @@ static int omap_vbus_draw(struct usb_gadget *gadget, unsigned mA)
 
 	udc = container_of(gadget, struct omap_udc, gadget);
 	if (udc->transceiver)
-		return otg_set_power(udc->transceiver, mA);
+		return usb_phy_set_power(udc->transceiver, mA);
 	return -EOPNOTSUPP;
 }
 
@@ -1839,11 +1840,13 @@ static void devstate_irq(struct omap_udc *udc, u16 irq_src)
 					spin_lock(&udc->lock);
 				}
 				if (udc->transceiver)
-					otg_set_suspend(udc->transceiver, 1);
+					usb_phy_set_suspend(
+							udc->transceiver, 1);
 			} else {
 				VDBG("resume\n");
 				if (udc->transceiver)
-					otg_set_suspend(udc->transceiver, 0);
+					usb_phy_set_suspend(
+							udc->transceiver, 0);
 				if (udc->gadget.speed == USB_SPEED_FULL
 						&& udc->driver->resume) {
 					spin_unlock(&udc->lock);
@@ -2154,7 +2157,8 @@ static int omap_udc_start(struct usb_gadget_driver *driver,
 
 	/* connect to bus through transceiver */
 	if (udc->transceiver) {
-		status = otg_set_peripheral(udc->transceiver, &udc->gadget);
+		status = otg_set_peripheral(udc->transceiver->otg,
+						&udc->gadget);
 		if (status < 0) {
 			ERR("can't bind to transceiver\n");
 			if (driver->unbind) {
@@ -2200,7 +2204,7 @@ static int omap_udc_stop(struct usb_gadget_driver *driver)
 		omap_vbus_session(&udc->gadget, 0);
 
 	if (udc->transceiver)
-		(void) otg_set_peripheral(udc->transceiver, NULL);
+		(void) otg_set_peripheral(udc->transceiver->otg, NULL);
 	else
 		pullup_disable(udc);
 
@@ -2650,7 +2654,7 @@ static void omap_udc_release(struct device *dev)
 }
 
 static int __init
-omap_udc_setup(struct platform_device *odev, struct otg_transceiver *xceiv)
+omap_udc_setup(struct platform_device *odev, struct usb_phy *xceiv)
 {
 	unsigned	tmp, buf;
 
@@ -2790,7 +2794,7 @@ static int __init omap_udc_probe(struct platform_device *pdev)
 {
 	int			status = -ENODEV;
 	int			hmc;
-	struct otg_transceiver	*xceiv = NULL;
+	struct usb_phy		*xceiv = NULL;
 	const char		*type = NULL;
 	struct omap_usb_config	*config = pdev->dev.platform_data;
 	struct clk		*dc_clk;
@@ -2863,7 +2867,7 @@ static int __init omap_udc_probe(struct platform_device *pdev)
 		 * use it.  Except for OTG, we don't _need_ to talk to one;
 		 * but not having one probably means no VBUS detection.
 		 */
-		xceiv = otg_get_transceiver();
+		xceiv = usb_get_transceiver();
 		if (xceiv)
 			type = xceiv->label;
 		else if (config->otg) {
@@ -3009,7 +3013,7 @@ cleanup1:
 
 cleanup0:
 	if (xceiv)
-		otg_put_transceiver(xceiv);
+		usb_put_transceiver(xceiv);
 
 	if (cpu_is_omap16xx() || cpu_is_omap24xx() || cpu_is_omap7xx()) {
 		clk_disable(hhc_clk);
@@ -3039,7 +3043,7 @@ static int __exit omap_udc_remove(struct platform_device *pdev)
 
 	pullup_disable(udc);
 	if (udc->transceiver) {
-		otg_put_transceiver(udc->transceiver);
+		usb_put_transceiver(udc->transceiver);
 		udc->transceiver = NULL;
 	}
 	omap_writew(0, UDC_SYSCON1);

drivers/usb/gadget/omap_udc.h

@@ -164,7 +164,7 @@ struct omap_udc {
 	struct omap_ep			ep[32];
 	u16				devstat;
 	u16				clr_halt;
-	struct otg_transceiver		*transceiver;
+	struct usb_phy			*transceiver;
 	struct list_head		iso;
 	unsigned			softconnect:1;
 	unsigned			vbus_active:1;

drivers/usb/gadget/pch_udc.c

@@ -15,6 +15,14 @@
 #include <linux/interrupt.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
+#include <linux/gpio.h>
+#include <linux/irq.h>
+
+/* GPIO port for VBUS detecting */
+static int vbus_gpio_port = -1;		/* GPIO port number (-1:Not used) */
+
+#define PCH_VBUS_PERIOD		3000	/* VBUS polling period (msec) */
+#define PCH_VBUS_INTERVAL	10	/* VBUS polling interval (msec) */
 
 /* Address offset of Registers */
 #define UDC_EP_REG_SHIFT	0x20	/* Offset to next EP */
@@ -295,6 +303,21 @@ struct pch_udc_ep {
 	unsigned long			epsts;
 };
 
+/**
+ * struct pch_vbus_gpio_data - Structure holding GPIO informaton
+ *					for detecting VBUS
+ * @port:		gpio port number
+ * @intr:		gpio interrupt number
+ * @irq_work_fall	Structure for WorkQueue
+ * @irq_work_rise	Structure for WorkQueue
+ */
+struct pch_vbus_gpio_data {
+	int			port;
+	int			intr;
+	struct work_struct	irq_work_fall;
+	struct work_struct	irq_work_rise;
+};
+
 /**
  * struct pch_udc_dev - Structure holding complete information
  *			of the PCH USB device
@@ -311,6 +334,7 @@ struct pch_udc_ep {
  * @registered:		driver regsitered with system
  * @suspended:		driver in suspended state
  * @connected:		gadget driver associated
+ * @vbus_session:	required vbus_session state
  * @set_cfg_not_acked:	pending acknowledgement 4 setup
  * @waiting_zlp_ack:	pending acknowledgement 4 ZLP
  * @data_requests:	DMA pool for data requests
@@ -322,6 +346,7 @@ struct pch_udc_ep {
  * @base_addr:		for mapped device memory
  * @irq:		IRQ line for the device
  * @cfg_data:		current cfg, intf, and alt in use
+ * @vbus_gpio:		GPIO informaton for detecting VBUS
  */
 struct pch_udc_dev {
 	struct usb_gadget		gadget;
@@ -337,6 +362,7 @@ struct pch_udc_dev {
 			registered:1,
 			suspended:1,
 			connected:1,
+			vbus_session:1,
 			set_cfg_not_acked:1,
 			waiting_zlp_ack:1;
 	struct pci_pool		*data_requests;
@@ -347,7 +373,8 @@ struct pch_udc_dev {
 	unsigned long			phys_addr;
 	void __iomem			*base_addr;
 	unsigned			irq;
-	struct pch_udc_cfg_data	cfg_data;
+	struct pch_udc_cfg_data		cfg_data;
+	struct pch_vbus_gpio_data	vbus_gpio;
 };
 
 #define PCH_UDC_PCI_BAR			1
@@ -553,6 +580,29 @@ static void pch_udc_clear_disconnect(struct pch_udc_dev *dev)
 	pch_udc_bit_clr(dev, UDC_DEVCTL_ADDR, UDC_DEVCTL_RES);
 }
 
+/**
+ * pch_udc_reconnect() - This API initializes usb device controller,
+ *						and clear the disconnect status.
+ * @dev:		Reference to pch_udc_regs structure
+ */
+static void pch_udc_init(struct pch_udc_dev *dev);
+static void pch_udc_reconnect(struct pch_udc_dev *dev)
+{
+	pch_udc_init(dev);
+
+	/* enable device interrupts */
+	/* pch_udc_enable_interrupts() */
+	pch_udc_bit_clr(dev, UDC_DEVIRQMSK_ADDR,
+			UDC_DEVINT_UR | UDC_DEVINT_ENUM);
+
+	/* Clear the disconnect */
+	pch_udc_bit_set(dev, UDC_DEVCTL_ADDR, UDC_DEVCTL_RES);
+	pch_udc_bit_clr(dev, UDC_DEVCTL_ADDR, UDC_DEVCTL_SD);
+	mdelay(1);
+	/* Resume USB signalling */
+	pch_udc_bit_clr(dev, UDC_DEVCTL_ADDR, UDC_DEVCTL_RES);
+}
+
 /**
  * pch_udc_vbus_session() - set or clearr the disconnect status.
  * @dev:	Reference to pch_udc_regs structure
@@ -563,10 +613,18 @@ static void pch_udc_clear_disconnect(struct pch_udc_dev *dev)
 static inline void pch_udc_vbus_session(struct pch_udc_dev *dev,
 					  int is_active)
 {
-	if (is_active)
-		pch_udc_clear_disconnect(dev);
-	else
+	if (is_active) {
+		pch_udc_reconnect(dev);
+		dev->vbus_session = 1;
+	} else {
+		if (dev->driver && dev->driver->disconnect) {
+			spin_unlock(&dev->lock);
+			dev->driver->disconnect(&dev->gadget);
+			spin_lock(&dev->lock);
+		}
 		pch_udc_set_disconnect(dev);
+		dev->vbus_session = 0;
+	}
 }
 
 /**
@@ -1126,7 +1184,17 @@ static int pch_udc_pcd_pullup(struct usb_gadget *gadget, int is_on)
 	if (!gadget)
 		return -EINVAL;
 	dev = container_of(gadget, struct pch_udc_dev, gadget);
-	pch_udc_vbus_session(dev, is_on);
+	if (is_on) {
+		pch_udc_reconnect(dev);
+	} else {
+		if (dev->driver && dev->driver->disconnect) {
+			spin_unlock(&dev->lock);
+			dev->driver->disconnect(&dev->gadget);
+			spin_lock(&dev->lock);
+		}
+		pch_udc_set_disconnect(dev);
+	}
+
 	return 0;
 }
 
@@ -1182,6 +1250,188 @@ static const struct usb_gadget_ops pch_udc_ops = {
 	.stop	= pch_udc_stop,
 };
 
+/**
+ * pch_vbus_gpio_get_value() - This API gets value of GPIO port as VBUS status.
+ * @dev:	Reference to the driver structure
+ *
+ * Return value:
+ *	1: VBUS is high
+ *	0: VBUS is low
+ *     -1: It is not enable to detect VBUS using GPIO
+ */
+static int pch_vbus_gpio_get_value(struct pch_udc_dev *dev)
+{
+	int vbus = 0;
+
+	if (dev->vbus_gpio.port)
+		vbus = gpio_get_value(dev->vbus_gpio.port) ? 1 : 0;
+	else
+		vbus = -1;
+
+	return vbus;
+}
+
+/**
+ * pch_vbus_gpio_work_fall() - This API keeps watch on VBUS becoming Low.
+ *                             If VBUS is Low, disconnect is processed
+ * @irq_work:	Structure for WorkQueue
+ *
+ */
+static void pch_vbus_gpio_work_fall(struct work_struct *irq_work)
+{
+	struct pch_vbus_gpio_data *vbus_gpio = container_of(irq_work,
+		struct pch_vbus_gpio_data, irq_work_fall);
+	struct pch_udc_dev *dev =
+		container_of(vbus_gpio, struct pch_udc_dev, vbus_gpio);
+	int vbus_saved = -1;
+	int vbus;
+	int count;
+
+	if (!dev->vbus_gpio.port)
+		return;
+
+	for (count = 0; count < (PCH_VBUS_PERIOD / PCH_VBUS_INTERVAL);
+		count++) {
+		vbus = pch_vbus_gpio_get_value(dev);
+
+		if ((vbus_saved == vbus) && (vbus == 0)) {
+			dev_dbg(&dev->pdev->dev, "VBUS fell");
+			if (dev->driver
+				&& dev->driver->disconnect) {
+				dev->driver->disconnect(
+					&dev->gadget);
+			}
+			if (dev->vbus_gpio.intr)
+				pch_udc_init(dev);
+			else
+				pch_udc_reconnect(dev);
+			return;
+		}
+		vbus_saved = vbus;
+		mdelay(PCH_VBUS_INTERVAL);
+	}
+}
+
+/**
+ * pch_vbus_gpio_work_rise() - This API checks VBUS is High.
+ *                             If VBUS is High, connect is processed
+ * @irq_work:	Structure for WorkQueue
+ *
+ */
+static void pch_vbus_gpio_work_rise(struct work_struct *irq_work)
+{
+	struct pch_vbus_gpio_data *vbus_gpio = container_of(irq_work,
+		struct pch_vbus_gpio_data, irq_work_rise);
+	struct pch_udc_dev *dev =
+		container_of(vbus_gpio, struct pch_udc_dev, vbus_gpio);
+	int vbus;
+
+	if (!dev->vbus_gpio.port)
+		return;
+
+	mdelay(PCH_VBUS_INTERVAL);
+	vbus = pch_vbus_gpio_get_value(dev);
+
+	if (vbus == 1) {
+		dev_dbg(&dev->pdev->dev, "VBUS rose");
+		pch_udc_reconnect(dev);
+		return;
+	}
+}
+
+/**
+ * pch_vbus_gpio_irq() - IRQ handler for GPIO intrerrupt for changing VBUS
+ * @irq:	Interrupt request number
+ * @dev:	Reference to the device structure
+ *
+ * Return codes:
+ *	0: Success
+ *	-EINVAL: GPIO port is invalid or can't be initialized.
+ */
+static irqreturn_t pch_vbus_gpio_irq(int irq, void *data)
+{
+	struct pch_udc_dev *dev = (struct pch_udc_dev *)data;
+
+	if (!dev->vbus_gpio.port || !dev->vbus_gpio.intr)
+		return IRQ_NONE;
+
+	if (pch_vbus_gpio_get_value(dev))
+		schedule_work(&dev->vbus_gpio.irq_work_rise);
+	else
+		schedule_work(&dev->vbus_gpio.irq_work_fall);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * pch_vbus_gpio_init() - This API initializes GPIO port detecting VBUS.
+ * @dev:	Reference to the driver structure
+ * @vbus_gpio	Number of GPIO port to detect gpio
+ *
+ * Return codes:
+ *	0: Success
+ *	-EINVAL: GPIO port is invalid or can't be initialized.
+ */
+static int pch_vbus_gpio_init(struct pch_udc_dev *dev, int vbus_gpio_port)
+{
+	int err;
+	int irq_num = 0;
+
+	dev->vbus_gpio.port = 0;
+	dev->vbus_gpio.intr = 0;
+
+	if (vbus_gpio_port <= -1)
+		return -EINVAL;
+
+	err = gpio_is_valid(vbus_gpio_port);
+	if (!err) {
+		pr_err("%s: gpio port %d is invalid\n",
+			__func__, vbus_gpio_port);
+		return -EINVAL;
+	}
+
+	err = gpio_request(vbus_gpio_port, "pch_vbus");
+	if (err) {
+		pr_err("%s: can't request gpio port %d, err: %d\n",
+			__func__, vbus_gpio_port, err);
+		return -EINVAL;
+	}
+
+	dev->vbus_gpio.port = vbus_gpio_port;
+	gpio_direction_input(vbus_gpio_port);
+	INIT_WORK(&dev->vbus_gpio.irq_work_fall, pch_vbus_gpio_work_fall);
+
+	irq_num = gpio_to_irq(vbus_gpio_port);
+	if (irq_num > 0) {
+		irq_set_irq_type(irq_num, IRQ_TYPE_EDGE_BOTH);
+		err = request_irq(irq_num, pch_vbus_gpio_irq, 0,
+			"vbus_detect", dev);
+		if (!err) {
+			dev->vbus_gpio.intr = irq_num;
+			INIT_WORK(&dev->vbus_gpio.irq_work_rise,
+				pch_vbus_gpio_work_rise);
+		} else {
+			pr_err("%s: can't request irq %d, err: %d\n",
+				__func__, irq_num, err);
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * pch_vbus_gpio_free() - This API frees resources of GPIO port
+ * @dev:	Reference to the driver structure
+ */
+static void pch_vbus_gpio_free(struct pch_udc_dev *dev)
+{
+	if (dev->vbus_gpio.intr)
+		free_irq(dev->vbus_gpio.intr, dev);
+
+	if (dev->vbus_gpio.port)
+		gpio_free(dev->vbus_gpio.port);
+}
+
 /**
  * complete_req() - This API is invoked from the driver when processing
  *			of a request is complete
@@ -1493,6 +1743,7 @@ static int pch_udc_pcd_ep_disable(struct usb_ep *usbep)
 	pch_udc_ep_disable(ep);
 	pch_udc_disable_ep_interrupts(ep->dev, PCH_UDC_EPINT(ep->in, ep->num));
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 	INIT_LIST_HEAD(&ep->queue);
 	spin_unlock_irqrestore(&ep->dev->lock, iflags);
 	return 0;
@@ -2335,8 +2586,11 @@ static void pch_udc_svc_ur_interrupt(struct pch_udc_dev *dev)
 		/* Complete request queue */
 		empty_req_queue(ep);
 	}
-	if (dev->driver && dev->driver->disconnect)
+	if (dev->driver && dev->driver->disconnect) {
+		spin_unlock(&dev->lock);
 		dev->driver->disconnect(&dev->gadget);
+		spin_lock(&dev->lock);
+	}
 }
 
 /**
@@ -2371,6 +2625,11 @@ static void pch_udc_svc_enum_interrupt(struct pch_udc_dev *dev)
 	pch_udc_set_dma(dev, DMA_DIR_TX);
 	pch_udc_set_dma(dev, DMA_DIR_RX);
 	pch_udc_ep_set_rrdy(&(dev->ep[UDC_EP0OUT_IDX]));
+
+	/* enable device interrupts */
+	pch_udc_enable_interrupts(dev, UDC_DEVINT_UR | UDC_DEVINT_US |
+					UDC_DEVINT_ES | UDC_DEVINT_ENUM |
+					UDC_DEVINT_SI | UDC_DEVINT_SC);
 }
 
 /**
@@ -2459,12 +2718,18 @@ static void pch_udc_svc_cfg_interrupt(struct pch_udc_dev *dev)
  */
 static void pch_udc_dev_isr(struct pch_udc_dev *dev, u32 dev_intr)
 {
+	int vbus;
+
 	/* USB Reset Interrupt */
-	if (dev_intr & UDC_DEVINT_UR)
+	if (dev_intr & UDC_DEVINT_UR) {
 		pch_udc_svc_ur_interrupt(dev);
+		dev_dbg(&dev->pdev->dev, "USB_RESET\n");
+	}
 	/* Enumeration Done Interrupt */
-	if (dev_intr & UDC_DEVINT_ENUM)
+	if (dev_intr & UDC_DEVINT_ENUM) {
 		pch_udc_svc_enum_interrupt(dev);
+		dev_dbg(&dev->pdev->dev, "USB_ENUM\n");
+	}
 	/* Set Interface Interrupt */
 	if (dev_intr & UDC_DEVINT_SI)
 		pch_udc_svc_intf_interrupt(dev);
@@ -2472,8 +2737,30 @@ static void pch_udc_dev_isr(struct pch_udc_dev *dev, u32 dev_intr)
 	if (dev_intr & UDC_DEVINT_SC)
 		pch_udc_svc_cfg_interrupt(dev);
 	/* USB Suspend interrupt */
-	if (dev_intr & UDC_DEVINT_US)
+	if (dev_intr & UDC_DEVINT_US) {
+		if (dev->driver
+			&& dev->driver->suspend) {
+			spin_unlock(&dev->lock);
+			dev->driver->suspend(&dev->gadget);
+			spin_lock(&dev->lock);
+		}
+
+		vbus = pch_vbus_gpio_get_value(dev);
+		if ((dev->vbus_session == 0)
+			&& (vbus != 1)) {
+			if (dev->driver && dev->driver->disconnect) {
+				spin_unlock(&dev->lock);
+				dev->driver->disconnect(&dev->gadget);
+				spin_lock(&dev->lock);
+			}
+			pch_udc_reconnect(dev);
+		} else if ((dev->vbus_session == 0)
+			&& (vbus == 1)
+			&& !dev->vbus_gpio.intr)
+			schedule_work(&dev->vbus_gpio.irq_work_fall);
+
 		dev_dbg(&dev->pdev->dev, "USB_SUSPEND\n");
+	}
 	/* Clear the SOF interrupt, if enabled */
 	if (dev_intr & UDC_DEVINT_SOF)
 		dev_dbg(&dev->pdev->dev, "SOF\n");
@@ -2499,6 +2786,14 @@ static irqreturn_t pch_udc_isr(int irq, void *pdev)
 	dev_intr = pch_udc_read_device_interrupts(dev);
 	ep_intr = pch_udc_read_ep_interrupts(dev);
 
+	/* For a hot plug, this find that the controller is hung up. */
+	if (dev_intr == ep_intr)
+		if (dev_intr == pch_udc_readl(dev, UDC_DEVCFG_ADDR)) {
+			dev_dbg(&dev->pdev->dev, "UDC: Hung up\n");
+			/* The controller is reset */
+			pch_udc_writel(dev, UDC_SRST, UDC_SRST_ADDR);
+			return IRQ_HANDLED;
+		}
 	if (dev_intr)
 		/* Clear device interrupts */
 		pch_udc_write_device_interrupts(dev, dev_intr);
@@ -2625,6 +2920,7 @@ static int pch_udc_pcd_init(struct pch_udc_dev *dev)
 {
 	pch_udc_init(dev);
 	pch_udc_pcd_reinit(dev);
+	pch_vbus_gpio_init(dev, vbus_gpio_port);
 	return 0;
 }
 
@@ -2725,7 +3021,8 @@ static int pch_udc_start(struct usb_gadget_driver *driver,
 	pch_udc_setup_ep0(dev);
 
 	/* clear SD */
-	pch_udc_clear_disconnect(dev);
+	if ((pch_vbus_gpio_get_value(dev) != 0) || !dev->vbus_gpio.intr)
+		pch_udc_clear_disconnect(dev);
 
 	dev->connected = 1;
 	return 0;
@@ -2803,6 +3100,8 @@ static void pch_udc_remove(struct pci_dev *pdev)
 				 UDC_EP0OUT_BUFF_SIZE * 4, DMA_FROM_DEVICE);
 	kfree(dev->ep0out_buf);
 
+	pch_vbus_gpio_free(dev);
+
 	pch_udc_exit(dev);
 
 	if (dev->irq_registered)
@@ -2912,8 +3211,10 @@ static int pch_udc_probe(struct pci_dev *pdev,
 	}
 	pch_udc = dev;
 	/* initialize the hardware */
-	if (pch_udc_pcd_init(dev))
+	if (pch_udc_pcd_init(dev)) {
+		retval = -ENODEV;
 		goto finished;
+	}
 	if (request_irq(pdev->irq, pch_udc_isr, IRQF_SHARED, KBUILD_MODNAME,
 			dev)) {
 		dev_err(&pdev->dev, "%s: request_irq(%d) fail\n", __func__,

drivers/usb/gadget/pxa25x_udc.c

@@ -283,6 +283,7 @@ static int pxa25x_ep_disable (struct usb_ep *_ep)
 	pxa25x_ep_fifo_flush (_ep);
 
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 	ep->stopped = 1;
 
 	local_irq_restore(flags);
@@ -995,7 +996,7 @@ static int pxa25x_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
 	udc = container_of(_gadget, struct pxa25x_udc, gadget);
 
 	if (udc->transceiver)
-		return otg_set_power(udc->transceiver, mA);
+		return usb_phy_set_power(udc->transceiver, mA);
 	return -EOPNOTSUPP;
 }
 
@@ -1192,6 +1193,7 @@ static void udc_reinit(struct pxa25x_udc *dev)
 			list_add_tail (&ep->ep.ep_list, &dev->gadget.ep_list);
 
 		ep->desc = NULL;
+		ep->ep.desc = NULL;
 		ep->stopped = 0;
 		INIT_LIST_HEAD (&ep->queue);
 		ep->pio_irqs = 0;
@@ -1301,7 +1303,8 @@ fail:
 
 	/* connect to bus through transceiver */
 	if (dev->transceiver) {
-		retval = otg_set_peripheral(dev->transceiver, &dev->gadget);
+		retval = otg_set_peripheral(dev->transceiver->otg,
+						&dev->gadget);
 		if (retval) {
 			DMSG("can't bind to transceiver\n");
 			if (driver->unbind)
@@ -1360,7 +1363,7 @@ static int pxa25x_stop(struct usb_gadget_driver *driver)
 	local_irq_enable();
 
 	if (dev->transceiver)
-		(void) otg_set_peripheral(dev->transceiver, NULL);
+		(void) otg_set_peripheral(dev->transceiver->otg, NULL);
 
 	driver->unbind(&dev->gadget);
 	dev->gadget.dev.driver = NULL;
@@ -2159,7 +2162,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev)
 	dev->dev = &pdev->dev;
 	dev->mach = pdev->dev.platform_data;
 
-	dev->transceiver = otg_get_transceiver();
+	dev->transceiver = usb_get_transceiver();
 
 	if (gpio_is_valid(dev->mach->gpio_pullup)) {
 		if ((retval = gpio_request(dev->mach->gpio_pullup,
@@ -2238,7 +2241,7 @@ lubbock_fail0:
 		gpio_free(dev->mach->gpio_pullup);
  err_gpio_pullup:
 	if (dev->transceiver) {
-		otg_put_transceiver(dev->transceiver);
+		usb_put_transceiver(dev->transceiver);
 		dev->transceiver = NULL;
 	}
 	clk_put(dev->clk);
@@ -2280,7 +2283,7 @@ static int __exit pxa25x_udc_remove(struct platform_device *pdev)
 	clk_put(dev->clk);
 
 	if (dev->transceiver) {
-		otg_put_transceiver(dev->transceiver);
+		usb_put_transceiver(dev->transceiver);
 		dev->transceiver = NULL;
 	}
 

drivers/usb/gadget/pxa25x_udc.h

@@ -119,7 +119,7 @@ struct pxa25x_udc {
 	struct device				*dev;
 	struct clk				*clk;
 	struct pxa2xx_udc_mach_info		*mach;
-	struct otg_transceiver			*transceiver;
+	struct usb_phy				*transceiver;
 	u64					dma_mask;
 	struct pxa25x_ep			ep [PXA_UDC_NUM_ENDPOINTS];
 

drivers/usb/gadget/pxa27x_udc.c

@@ -1666,7 +1666,7 @@ static int pxa_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
 
 	udc = to_gadget_udc(_gadget);
 	if (udc->transceiver)
-		return otg_set_power(udc->transceiver, mA);
+		return usb_phy_set_power(udc->transceiver, mA);
 	return -EOPNOTSUPP;
 }
 
@@ -1835,7 +1835,8 @@ static int pxa27x_udc_start(struct usb_gadget_driver *driver,
 		driver->driver.name);
 
 	if (udc->transceiver) {
-		retval = otg_set_peripheral(udc->transceiver, &udc->gadget);
+		retval = otg_set_peripheral(udc->transceiver->otg,
+						&udc->gadget);
 		if (retval) {
 			dev_err(udc->dev, "can't bind to transceiver\n");
 			goto transceiver_fail;
@@ -1908,7 +1909,7 @@ static int pxa27x_udc_stop(struct usb_gadget_driver *driver)
 		 driver->driver.name);
 
 	if (udc->transceiver)
-		return otg_set_peripheral(udc->transceiver, NULL);
+		return otg_set_peripheral(udc->transceiver->otg, NULL);
 	return 0;
 }
 
@@ -2463,7 +2464,7 @@ static int __init pxa_udc_probe(struct platform_device *pdev)
 
 	udc->dev = &pdev->dev;
 	udc->mach = pdev->dev.platform_data;
-	udc->transceiver = otg_get_transceiver();
+	udc->transceiver = usb_get_transceiver();
 
 	gpio = udc->mach->gpio_pullup;
 	if (gpio_is_valid(gpio)) {
@@ -2542,7 +2543,7 @@ static int __exit pxa_udc_remove(struct platform_device *_dev)
 	if (gpio_is_valid(gpio))
 		gpio_free(gpio);
 
-	otg_put_transceiver(udc->transceiver);
+	usb_put_transceiver(udc->transceiver);
 
 	udc->transceiver = NULL;
 	platform_set_drvdata(_dev, NULL);

drivers/usb/gadget/pxa27x_udc.h

@@ -447,7 +447,7 @@ struct pxa_udc {
 	struct usb_gadget_driver		*driver;
 	struct device				*dev;
 	struct pxa2xx_udc_mach_info		*mach;
-	struct otg_transceiver			*transceiver;
+	struct usb_phy				*transceiver;
 
 	enum ep0_state				ep0state;
 	struct udc_stats			stats;

drivers/usb/gadget/r8a66597-udc.c

@@ -663,11 +663,7 @@ static int sudmac_alloc_channel(struct r8a66597 *r8a66597,
 	ep->fifoctr = D0FIFOCTR;
 
 	/* dma mapping */
-	req->req.dma = dma_map_single(r8a66597_to_dev(ep->r8a66597),
-				req->req.buf, req->req.length,
-				dma->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
-
-	return 0;
+	return usb_gadget_map_request(&r8a66597->gadget, &req->req, dma->dir);
 }
 
 static void sudmac_free_channel(struct r8a66597 *r8a66597,
@@ -677,9 +673,7 @@ static void sudmac_free_channel(struct r8a66597 *r8a66597,
 	if (!r8a66597_is_sudmac(r8a66597))
 		return;
 
-	dma_unmap_single(r8a66597_to_dev(ep->r8a66597),
-			 req->req.dma, req->req.length,
-			 ep->dma->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+	usb_gadget_unmap_request(&r8a66597->gadget, &req->req, ep->dma->dir);
 
 	r8a66597_bclr(r8a66597, DREQE, ep->fifosel);
 	r8a66597_change_curpipe(r8a66597, 0, 0, ep->fifosel);

drivers/usb/gadget/s3c-hsudc.c

@@ -30,6 +30,7 @@
 #include <linux/prefetch.h>
 #include <linux/platform_data/s3c-hsudc.h>
 #include <linux/regulator/consumer.h>
+#include <linux/pm_runtime.h>
 
 #include <mach/regs-s3c2443-clock.h>
 
@@ -145,7 +146,7 @@ struct s3c_hsudc {
 	struct usb_gadget_driver *driver;
 	struct device *dev;
 	struct s3c24xx_hsudc_platdata *pd;
-	struct otg_transceiver *transceiver;
+	struct usb_phy *transceiver;
 	struct regulator_bulk_data supplies[ARRAY_SIZE(s3c_hsudc_supply_names)];
 	spinlock_t lock;
 	void __iomem *regs;
@@ -759,7 +760,7 @@ static int s3c_hsudc_ep_enable(struct usb_ep *_ep,
 	unsigned long flags;
 	u32 ecr = 0;
 
-	hsep = container_of(_ep, struct s3c_hsudc_ep, ep);
+	hsep = our_ep(_ep);
 	if (!_ep || !desc || hsep->desc || _ep->name == ep0name
 		|| desc->bDescriptorType != USB_DT_ENDPOINT
 		|| hsep->bEndpointAddress != desc->bEndpointAddress
@@ -816,6 +817,7 @@ static int s3c_hsudc_ep_disable(struct usb_ep *_ep)
 	s3c_hsudc_nuke_ep(hsep, -ESHUTDOWN);
 
 	hsep->desc = 0;
+	hsep->ep.desc = NULL;
 	hsep->stopped = 1;
 
 	spin_unlock_irqrestore(&hsudc->lock, flags);
@@ -853,7 +855,7 @@ static void s3c_hsudc_free_request(struct usb_ep *ep, struct usb_request *_req)
 {
 	struct s3c_hsudc_req *hsreq;
 
-	hsreq = container_of(_req, struct s3c_hsudc_req, req);
+	hsreq = our_req(_req);
 	WARN_ON(!list_empty(&hsreq->queue));
 	kfree(hsreq);
 }
@@ -876,12 +878,12 @@ static int s3c_hsudc_queue(struct usb_ep *_ep, struct usb_request *_req,
 	u32 offset;
 	u32 csr;
 
-	hsreq = container_of(_req, struct s3c_hsudc_req, req);
+	hsreq = our_req(_req);
 	if ((!_req || !_req->complete || !_req->buf ||
 		!list_empty(&hsreq->queue)))
 		return -EINVAL;
 
-	hsep = container_of(_ep, struct s3c_hsudc_ep, ep);
+	hsep = our_ep(_ep);
 	hsudc = hsep->dev;
 	if (!hsudc->driver || hsudc->gadget.speed == USB_SPEED_UNKNOWN)
 		return -ESHUTDOWN;
@@ -935,7 +937,7 @@ static int s3c_hsudc_dequeue(struct usb_ep *_ep, struct usb_request *_req)
 	struct s3c_hsudc_req *hsreq;
 	unsigned long flags;
 
-	hsep = container_of(_ep, struct s3c_hsudc_ep, ep);
+	hsep = our_ep(_ep);
 	if (!_ep || hsep->ep.name == ep0name)
 		return -EINVAL;
 
@@ -1005,6 +1007,7 @@ static void s3c_hsudc_initep(struct s3c_hsudc *hsudc,
 	hsep->ep.ops = &s3c_hsudc_ep_ops;
 	hsep->fifo = hsudc->regs + S3C_BR(epnum);
 	hsep->desc = 0;
+	hsep->ep.desc = NULL;
 	hsep->stopped = 0;
 	hsep->wedge = 0;
 
@@ -1166,7 +1169,8 @@ static int s3c_hsudc_start(struct usb_gadget *gadget,
 
 	/* connect to bus through transceiver */
 	if (hsudc->transceiver) {
-		ret = otg_set_peripheral(hsudc->transceiver, &hsudc->gadget);
+		ret = otg_set_peripheral(hsudc->transceiver->otg,
+					&hsudc->gadget);
 		if (ret) {
 			dev_err(hsudc->dev, "%s: can't bind to transceiver\n",
 					hsudc->gadget.name);
@@ -1178,6 +1182,9 @@ static int s3c_hsudc_start(struct usb_gadget *gadget,
 	dev_info(hsudc->dev, "bound driver %s\n", driver->driver.name);
 
 	s3c_hsudc_reconfig(hsudc);
+
+	pm_runtime_get_sync(hsudc->dev);
+
 	s3c_hsudc_init_phy();
 	if (hsudc->pd->gpio_init)
 		hsudc->pd->gpio_init();
@@ -1208,13 +1215,16 @@ static int s3c_hsudc_stop(struct usb_gadget *gadget,
 	hsudc->gadget.dev.driver = NULL;
 	hsudc->gadget.speed = USB_SPEED_UNKNOWN;
 	s3c_hsudc_uninit_phy();
+
+	pm_runtime_put(hsudc->dev);
+
 	if (hsudc->pd->gpio_uninit)
 		hsudc->pd->gpio_uninit();
 	s3c_hsudc_stop_activity(hsudc);
 	spin_unlock_irqrestore(&hsudc->lock, flags);
 
 	if (hsudc->transceiver)
-		(void) otg_set_peripheral(hsudc->transceiver, NULL);
+		(void) otg_set_peripheral(hsudc->transceiver->otg, NULL);
 
 	disable_irq(hsudc->irq);
 
@@ -1243,7 +1253,7 @@ static int s3c_hsudc_vbus_draw(struct usb_gadget *gadget, unsigned mA)
 		return -ENODEV;
 
 	if (hsudc->transceiver)
-		return otg_set_power(hsudc->transceiver, mA);
+		return usb_phy_set_power(hsudc->transceiver, mA);
 
 	return -EOPNOTSUPP;
 }
@@ -1275,7 +1285,7 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev)
 	hsudc->dev = dev;
 	hsudc->pd = pdev->dev.platform_data;
 
-	hsudc->transceiver = otg_get_transceiver();
+	hsudc->transceiver = usb_get_transceiver();
 
 	for (i = 0; i < ARRAY_SIZE(hsudc->supplies); i++)
 		hsudc->supplies[i].supply = s3c_hsudc_supply_names[i];
@@ -1362,6 +1372,8 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_add_udc;
 
+	pm_runtime_enable(dev);
+
 	return 0;
 err_add_udc:
 	device_unregister(&hsudc->gadget.dev);
@@ -1377,7 +1389,7 @@ err_remap:
 	release_mem_region(res->start, resource_size(res));
 err_res:
 	if (hsudc->transceiver)
-		otg_put_transceiver(hsudc->transceiver);
+		usb_put_transceiver(hsudc->transceiver);
 
 	regulator_bulk_free(ARRAY_SIZE(hsudc->supplies), hsudc->supplies);
 err_supplies:

drivers/usb/gadget/s3c2410_udc.c

@@ -1148,6 +1148,7 @@ static int s3c2410_udc_ep_disable(struct usb_ep *_ep)
 	dprintk(DEBUG_NORMAL, "ep_disable: %s\n", _ep->name);
 
 	ep->desc = NULL;
+	ep->ep.desc = NULL;
 	ep->halted = 1;
 
 	s3c2410_udc_nuke (ep->dev, ep, -ESHUTDOWN);
@@ -1630,6 +1631,7 @@ static void s3c2410_udc_reinit(struct s3c2410_udc *dev)
 
 		ep->dev = dev;
 		ep->desc = NULL;
+		ep->ep.desc = NULL;
 		ep->halted = 0;
 		INIT_LIST_HEAD (&ep->queue);
 	}

drivers/usb/gadget/serial.c

@@ -242,7 +242,7 @@ static struct usb_composite_driver gserial_driver = {
 	.name		= "g_serial",
 	.dev		= &device_desc,
 	.strings	= dev_strings,
-	.max_speed	= USB_SPEED_HIGH,
+	.max_speed	= USB_SPEED_SUPER,
 };
 
 static int __init init(void)

drivers/usb/gadget/storage_common.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2003-2008 Alan Stern
  * Copyeight (C) 2009 Samsung Electronics
- * Author: Michal Nazarewicz (m.nazarewicz@samsung.com)
+ * Author: Michal Nazarewicz (mina86@mina86.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
@@ -145,48 +145,8 @@
 
 #endif /* DUMP_MSGS */
 
-
-
-
-
 /*-------------------------------------------------------------------------*/
 
-/* Bulk-only data structures */
-
-/* Command Block Wrapper */
-struct fsg_bulk_cb_wrap {
-	__le32	Signature;		/* Contains 'USBC' */
-	u32	Tag;			/* Unique per command id */
-	__le32	DataTransferLength;	/* Size of the data */
-	u8	Flags;			/* Direction in bit 7 */
-	u8	Lun;			/* LUN (normally 0) */
-	u8	Length;			/* Of the CDB, <= MAX_COMMAND_SIZE */
-	u8	CDB[16];		/* Command Data Block */
-};
-
-#define USB_BULK_CB_WRAP_LEN	31
-#define USB_BULK_CB_SIG		0x43425355	/* Spells out USBC */
-#define USB_BULK_IN_FLAG	0x80
-
-/* Command Status Wrapper */
-struct bulk_cs_wrap {
-	__le32	Signature;		/* Should = 'USBS' */
-	u32	Tag;			/* Same as original command */
-	__le32	Residue;		/* Amount not transferred */
-	u8	Status;			/* See below */
-};
-
-#define USB_BULK_CS_WRAP_LEN	13
-#define USB_BULK_CS_SIG		0x53425355	/* Spells out 'USBS' */
-#define USB_STATUS_PASS		0
-#define USB_STATUS_FAIL		1
-#define USB_STATUS_PHASE_ERROR	2
-
-/* Bulk-only class specific requests */
-#define USB_BULK_RESET_REQUEST		0xff
-#define USB_BULK_GET_MAX_LUN_REQUEST	0xfe
-
-
 /* CBI Interrupt data structure */
 struct interrupt_data {
 	u8	bType;

drivers/usb/gadget/u_audio.c → drivers/usb/gadget/u_uac1.c

@@ -1,5 +1,5 @@
 /*
- * u_audio.c -- ALSA audio utilities for Gadget stack
+ * u_uac1.c -- ALSA audio utilities for Gadget stack
  *
  * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org>
  * Copyright (C) 2008 Analog Devices, Inc
@@ -17,7 +17,7 @@
 #include <linux/random.h>
 #include <linux/syscalls.h>
 
-#include "u_audio.h"
+#include "u_uac1.h"
 
 /*
  * This component encapsulates the ALSA devices for USB audio gadget

drivers/usb/gadget/u_audio.h → drivers/usb/gadget/u_uac1.h

@@ -1,5 +1,5 @@
 /*
- * u_audio.h -- interface to USB gadget "ALSA AUDIO" utilities
+ * u_uac1.h -- interface to USB gadget "ALSA AUDIO" utilities
  *
  * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org>
  * Copyright (C) 2008 Analog Devices, Inc

drivers/usb/gadget/udc-core.c

@@ -22,6 +22,7 @@
 #include <linux/device.h>
 #include <linux/list.h>
 #include <linux/err.h>
+#include <linux/dma-mapping.h>
 
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
@@ -49,6 +50,57 @@ static DEFINE_MUTEX(udc_lock);
 
 /* ------------------------------------------------------------------------- */
 
+int usb_gadget_map_request(struct usb_gadget *gadget,
+		struct usb_request *req, int is_in)
+{
+	if (req->length == 0)
+		return 0;
+
+	if (req->num_sgs) {
+		int     mapped;
+
+		mapped = dma_map_sg(&gadget->dev, req->sg, req->num_sgs,
+				is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+		if (mapped == 0) {
+			dev_err(&gadget->dev, "failed to map SGs\n");
+			return -EFAULT;
+		}
+
+		req->num_mapped_sgs = mapped;
+	} else {
+		req->dma = dma_map_single(&gadget->dev, req->buf, req->length,
+				is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+
+		if (dma_mapping_error(&gadget->dev, req->dma)) {
+			dev_err(&gadget->dev, "failed to map buffer\n");
+			return -EFAULT;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(usb_gadget_map_request);
+
+void usb_gadget_unmap_request(struct usb_gadget *gadget,
+		struct usb_request *req, int is_in)
+{
+	if (req->length == 0)
+		return;
+
+	if (req->num_mapped_sgs) {
+		dma_unmap_sg(&gadget->dev, req->sg, req->num_mapped_sgs,
+				is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+
+		req->num_mapped_sgs = 0;
+	} else {
+		dma_unmap_single(&gadget->dev, req->dma, req->length,
+				is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+	}
+}
+EXPORT_SYMBOL_GPL(usb_gadget_unmap_request);
+
+/* ------------------------------------------------------------------------- */
+
 /**
  * usb_gadget_start - tells usb device controller to start up
  * @gadget: The gadget we want to get started

drivers/usb/host/Kconfig

@@ -196,7 +196,7 @@ config USB_EHCI_S5P
 
 config USB_EHCI_MV
 	bool "EHCI support for Marvell on-chip controller"
-	depends on USB_EHCI_HCD
+	depends on USB_EHCI_HCD && (ARCH_PXA || ARCH_MMP)
 	select USB_EHCI_ROOT_HUB_TT
 	---help---
 	  Enables support for Marvell (including PXA and MMP series) on-chip
@@ -606,10 +606,3 @@ config USB_OCTEON_OHCI
 config USB_OCTEON2_COMMON
 	bool
 	default y if USB_OCTEON_EHCI || USB_OCTEON_OHCI
-
-config USB_PXA168_EHCI
-	bool "Marvell PXA168 on-chip EHCI HCD support"
-	depends on USB_EHCI_HCD && ARCH_MMP
-	help
-	  Enable support for Marvell PXA168 SoC's on-chip EHCI
-	  host controller

drivers/usb/host/ehci-dbg.c

@@ -107,7 +107,7 @@ static void dbg_hcc_params (struct ehci_hcd *ehci, char *label)
 			HCC_PER_PORT_CHANGE_EVENT(params) ? " ppce" : "",
 			HCC_HW_PREFETCH(params) ? " hw prefetch" : "",
 			HCC_32FRAME_PERIODIC_LIST(params) ?
-				" 32 peridic list" : "");
+				" 32 periodic list" : "");
 	}
 }
 #else

drivers/usb/host/ehci-fsl.c

@@ -142,12 +142,12 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
 	if (pdata->operating_mode == FSL_USB2_DR_OTG) {
 		struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 
-		ehci->transceiver = otg_get_transceiver();
+		ehci->transceiver = usb_get_transceiver();
 		dev_dbg(&pdev->dev, "hcd=0x%p  ehci=0x%p, transceiver=0x%p\n",
 			hcd, ehci, ehci->transceiver);
 
 		if (ehci->transceiver) {
-			retval = otg_set_host(ehci->transceiver,
+			retval = otg_set_host(ehci->transceiver->otg,
 					      &ehci_to_hcd(ehci)->self);
 			if (retval) {
 				if (ehci->transceiver)
@@ -194,7 +194,7 @@ static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 
 	if (ehci->transceiver) {
-		otg_set_host(ehci->transceiver, NULL);
+		otg_set_host(ehci->transceiver->otg, NULL);
 		put_device(ehci->transceiver->dev);
 	}
 
@@ -216,6 +216,8 @@ static void ehci_fsl_setup_phy(struct ehci_hcd *ehci,
 			       unsigned int port_offset)
 {
 	u32 portsc;
+	struct usb_hcd *hcd = ehci_to_hcd(ehci);
+	void __iomem *non_ehci = hcd->regs;
 
 	portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]);
 	portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW);
@@ -231,6 +233,8 @@ static void ehci_fsl_setup_phy(struct ehci_hcd *ehci,
 		portsc |= PORT_PTS_PTW;
 		/* fall through */
 	case FSL_USB2_PHY_UTMI:
+		/* enable UTMI PHY */
+		setbits32(non_ehci + FSL_SOC_USB_CTRL, CTRL_UTMI_PHY_EN);
 		portsc |= PORT_PTS_UTMI;
 		break;
 	case FSL_USB2_PHY_NONE:
@@ -252,21 +256,18 @@ static void ehci_fsl_usb_setup(struct ehci_hcd *ehci)
 	if (pdata->have_sysif_regs) {
 		temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
 		out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004);
-		out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b);
-	}
 
-#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
-	/*
-	 * Turn on cache snooping hardware, since some PowerPC platforms
-	 * wholly rely on hardware to deal with cache coherent
-	 */
+		/*
+		* Turn on cache snooping hardware, since some PowerPC platforms
+		* wholly rely on hardware to deal with cache coherent
+		*/
 
-	/* Setup Snooping for all the 4GB space */
-	/* SNOOP1 starts from 0x0, size 2G */
-	out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB);
-	/* SNOOP2 starts from 0x80000000, size 2G */
-	out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
-#endif
+		/* Setup Snooping for all the 4GB space */
+		/* SNOOP1 starts from 0x0, size 2G */
+		out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB);
+		/* SNOOP2 starts from 0x80000000, size 2G */
+		out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
+	}
 
 	if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
 			(pdata->operating_mode == FSL_USB2_DR_OTG))
@@ -316,7 +317,9 @@ static int ehci_fsl_setup(struct usb_hcd *hcd)
 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 	int retval;
 	struct fsl_usb2_platform_data *pdata;
+	struct device *dev;
 
+	dev = hcd->self.controller;
 	pdata = hcd->self.controller->platform_data;
 	ehci->big_endian_desc = pdata->big_endian_desc;
 	ehci->big_endian_mmio = pdata->big_endian_mmio;
@@ -346,6 +349,16 @@ static int ehci_fsl_setup(struct usb_hcd *hcd)
 
 	ehci_reset(ehci);
 
+	if (of_device_is_compatible(dev->parent->of_node,
+				    "fsl,mpc5121-usb2-dr")) {
+		/*
+		 * set SBUSCFG:AHBBRST so that control msgs don't
+		 * fail when doing heavy PATA writes.
+		 */
+		ehci_writel(ehci, SBUSCFG_INCR8,
+			    hcd->regs + FSL_SOC_USB_SBUSCFG);
+	}
+
 	retval = ehci_fsl_reinit(ehci);
 	return retval;
 }
@@ -469,6 +482,8 @@ static int ehci_fsl_mpc512x_drv_resume(struct device *dev)
 	ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE,
 		    hcd->regs + FSL_SOC_USB_ISIPHYCTRL);
 
+	ehci_writel(ehci, SBUSCFG_INCR8, hcd->regs + FSL_SOC_USB_SBUSCFG);
+
 	/* restore EHCI registers */
 	ehci_writel(ehci, pdata->pm_command, &ehci->regs->command);
 	ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable);

drivers/usb/host/ehci-fsl.h

@@ -19,6 +19,8 @@
 #define _EHCI_FSL_H
 
 /* offsets for the non-ehci registers in the FSL SOC USB controller */
+#define FSL_SOC_USB_SBUSCFG	0x90
+#define SBUSCFG_INCR8		0x02	/* INCR8, specified */
 #define FSL_SOC_USB_ULPIVP	0x170
 #define FSL_SOC_USB_PORTSC1	0x184
 #define PORT_PTS_MSK		(3<<30)
@@ -45,5 +47,7 @@
 #define FSL_SOC_USB_PRICTRL	0x40c	/* NOTE: big-endian */
 #define FSL_SOC_USB_SICTRL	0x410	/* NOTE: big-endian */
 #define FSL_SOC_USB_CTRL	0x500	/* NOTE: big-endian */
+#define CTRL_UTMI_PHY_EN	(1<<9)
+#define CTRL_PHY_CLK_VALID	(1 << 17)
 #define SNOOP_SIZE_2GB		0x1e
 #endif				/* _EHCI_FSL_H */

drivers/usb/host/ehci-hcd.c

@@ -1361,11 +1361,6 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER		ehci_grlib_driver
 #endif
 
-#ifdef CONFIG_USB_PXA168_EHCI
-#include "ehci-pxa168.c"
-#define PLATFORM_DRIVER		ehci_pxa168_driver
-#endif
-
 #ifdef CONFIG_CPU_XLR
 #include "ehci-xls.c"
 #define PLATFORM_DRIVER		ehci_xls_driver
@@ -1376,6 +1371,11 @@ MODULE_LICENSE ("GPL");
 #define        PLATFORM_DRIVER         ehci_mv_driver
 #endif
 
+#ifdef CONFIG_MACH_LOONGSON1
+#include "ehci-ls1x.c"
+#define PLATFORM_DRIVER		ehci_ls1x_driver
+#endif
+
 #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
     !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
     !defined(XILINX_OF_PLATFORM_DRIVER)

drivers/usb/host/ehci-hub.c

@@ -107,7 +107,7 @@ static void ehci_handover_companion_ports(struct ehci_hcd *ehci)
 	ehci->owned_ports = 0;
 }
 
-static int ehci_port_change(struct ehci_hcd *ehci)
+static int __maybe_unused ehci_port_change(struct ehci_hcd *ehci)
 {
 	int i = HCS_N_PORTS(ehci->hcs_params);
 
@@ -727,7 +727,7 @@ static int ehci_hub_control (
 #ifdef CONFIG_USB_OTG
 			if ((hcd->self.otg_port == (wIndex + 1))
 			    && hcd->self.b_hnp_enable) {
-				otg_start_hnp(ehci->transceiver);
+				otg_start_hnp(ehci->transceiver->otg);
 				break;
 			}
 #endif
@@ -1076,7 +1076,8 @@ error_exit:
 	return retval;
 }
 
-static void ehci_relinquish_port(struct usb_hcd *hcd, int portnum)
+static void __maybe_unused ehci_relinquish_port(struct usb_hcd *hcd,
+		int portnum)
 {
 	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
 
@@ -1085,7 +1086,8 @@ static void ehci_relinquish_port(struct usb_hcd *hcd, int portnum)
 	set_owner(ehci, --portnum, PORT_OWNER);
 }
 
-static int ehci_port_handed_over(struct usb_hcd *hcd, int portnum)
+static int __maybe_unused ehci_port_handed_over(struct usb_hcd *hcd,
+		int portnum)
 {
 	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
 	u32 __iomem		*reg;

drivers/usb/host/ehci-ls1x.c

@@ -0,0 +1,159 @@
+/*
+ *  Bus Glue for Loongson LS1X built-in EHCI controller.
+ *
+ *  Copyright (c) 2012 Zhang, Keguang <keguang.zhang@gmail.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/platform_device.h>
+
+static int ehci_ls1x_reset(struct usb_hcd *hcd)
+{
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+	int ret;
+
+	ehci->caps = hcd->regs;
+
+	ret = ehci_setup(hcd);
+	if (ret)
+		return ret;
+
+	ehci_port_power(ehci, 0);
+
+	return 0;
+}
+
+static const struct hc_driver ehci_ls1x_hc_driver = {
+	.description		= hcd_name,
+	.product_desc		= "LOONGSON1 EHCI",
+	.hcd_priv_size		= sizeof(struct ehci_hcd),
+
+	/*
+	 * generic hardware linkage
+	 */
+	.irq			= ehci_irq,
+	.flags			= HCD_MEMORY | HCD_USB2,
+
+	/*
+	 * basic lifecycle operations
+	 */
+	.reset			= ehci_ls1x_reset,
+	.start			= ehci_run,
+	.stop			= ehci_stop,
+	.shutdown		= ehci_shutdown,
+
+	/*
+	 * managing i/o requests and associated device resources
+	 */
+	.urb_enqueue		= ehci_urb_enqueue,
+	.urb_dequeue		= ehci_urb_dequeue,
+	.endpoint_disable	= ehci_endpoint_disable,
+	.endpoint_reset		= ehci_endpoint_reset,
+
+	/*
+	 * scheduling support
+	 */
+	.get_frame_number	= ehci_get_frame,
+
+	/*
+	 * root hub support
+	 */
+	.hub_status_data	= ehci_hub_status_data,
+	.hub_control		= ehci_hub_control,
+	.relinquish_port	= ehci_relinquish_port,
+	.port_handed_over	= ehci_port_handed_over,
+
+	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
+};
+
+static int ehci_hcd_ls1x_probe(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd;
+	struct resource *res;
+	int irq;
+	int ret;
+
+	pr_debug("initializing loongson1 ehci USB Controller\n");
+
+	if (usb_disabled())
+		return -ENODEV;
+
+	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!res) {
+		dev_err(&pdev->dev,
+			"Found HC with no IRQ. Check %s setup!\n",
+			dev_name(&pdev->dev));
+		return -ENODEV;
+	}
+	irq = res->start;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev,
+			"Found HC with no register addr. Check %s setup!\n",
+			dev_name(&pdev->dev));
+		return -ENODEV;
+	}
+
+	hcd = usb_create_hcd(&ehci_ls1x_hc_driver, &pdev->dev,
+				dev_name(&pdev->dev));
+	if (!hcd)
+		return -ENOMEM;
+	hcd->rsrc_start	= res->start;
+	hcd->rsrc_len	= resource_size(res);
+
+	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+		dev_dbg(&pdev->dev, "controller already in use\n");
+		ret = -EBUSY;
+		goto err_put_hcd;
+	}
+
+	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+	if (hcd->regs == NULL) {
+		dev_dbg(&pdev->dev, "error mapping memory\n");
+		ret = -EFAULT;
+		goto err_release_region;
+	}
+
+	ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
+	if (ret)
+		goto err_iounmap;
+
+	return ret;
+
+err_iounmap:
+	iounmap(hcd->regs);
+err_release_region:
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err_put_hcd:
+	usb_put_hcd(hcd);
+	return ret;
+}
+
+static int ehci_hcd_ls1x_remove(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+	usb_remove_hcd(hcd);
+	iounmap(hcd->regs);
+	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+	usb_put_hcd(hcd);
+
+	return 0;
+}
+
+static struct platform_driver ehci_ls1x_driver = {
+	.probe = ehci_hcd_ls1x_probe,
+	.remove = ehci_hcd_ls1x_remove,
+	.shutdown = usb_hcd_platform_shutdown,
+	.driver = {
+		.name = "ls1x-ehci",
+		.owner	= THIS_MODULE,
+	},
+};
+
+MODULE_ALIAS(PLATFORM_MODULE_PREFIX "ls1x-ehci");