usb: gadget: Gadget directory cleanup - group UDC drivers

The drivers/usb/gadget directory contains many files.
Files which are related can be distributed into separate directories.
This patch moves the UDC drivers into a separate directory.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 0 insertions, 1369 deletions

diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c
deleted file mode 100644
index 10c6a128250c..000000000000
--- a/drivers/usb/gadget/s3c-hsudc.c
+++ /dev/null
@@ -1,1369 +0,0 @@
-/* linux/drivers/usb/gadget/s3c-hsudc.c
- *
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- *		http://www.samsung.com/
- *
- * S3C24XX USB 2.0 High-speed USB controller gadget driver
- *
- * The S3C24XX USB 2.0 high-speed USB controller supports upto 9 endpoints.
- * Each endpoint can be configured as either in or out endpoint. Endpoints
- * can be configured for Bulk or Interrupt transfer mode.
- *
- * 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/kernel.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-#include <linux/usb/otg.h>
-#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>
-
-#define S3C_HSUDC_REG(x)	(x)
-
-/* Non-Indexed Registers */
-#define S3C_IR				S3C_HSUDC_REG(0x00) /* Index Register */
-#define S3C_EIR				S3C_HSUDC_REG(0x04) /* EP Intr Status */
-#define S3C_EIR_EP0			(1<<0)
-#define S3C_EIER			S3C_HSUDC_REG(0x08) /* EP Intr Enable */
-#define S3C_FAR				S3C_HSUDC_REG(0x0c) /* Gadget Address */
-#define S3C_FNR				S3C_HSUDC_REG(0x10) /* Frame Number */
-#define S3C_EDR				S3C_HSUDC_REG(0x14) /* EP Direction */
-#define S3C_TR				S3C_HSUDC_REG(0x18) /* Test Register */
-#define S3C_SSR				S3C_HSUDC_REG(0x1c) /* System Status */
-#define S3C_SSR_DTZIEN_EN		(0xff8f)
-#define S3C_SSR_ERR			(0xff80)
-#define S3C_SSR_VBUSON			(1 << 8)
-#define S3C_SSR_HSP			(1 << 4)
-#define S3C_SSR_SDE			(1 << 3)
-#define S3C_SSR_RESUME			(1 << 2)
-#define S3C_SSR_SUSPEND			(1 << 1)
-#define S3C_SSR_RESET			(1 << 0)
-#define S3C_SCR				S3C_HSUDC_REG(0x20) /* System Control */
-#define S3C_SCR_DTZIEN_EN		(1 << 14)
-#define S3C_SCR_RRD_EN			(1 << 5)
-#define S3C_SCR_SUS_EN			(1 << 1)
-#define S3C_SCR_RST_EN			(1 << 0)
-#define S3C_EP0SR			S3C_HSUDC_REG(0x24) /* EP0 Status */
-#define S3C_EP0SR_EP0_LWO		(1 << 6)
-#define S3C_EP0SR_STALL			(1 << 4)
-#define S3C_EP0SR_TX_SUCCESS		(1 << 1)
-#define S3C_EP0SR_RX_SUCCESS		(1 << 0)
-#define S3C_EP0CR			S3C_HSUDC_REG(0x28) /* EP0 Control */
-#define S3C_BR(_x)			S3C_HSUDC_REG(0x60 + (_x * 4))
-
-/* Indexed Registers */
-#define S3C_ESR				S3C_HSUDC_REG(0x2c) /* EPn Status */
-#define S3C_ESR_FLUSH			(1 << 6)
-#define S3C_ESR_STALL			(1 << 5)
-#define S3C_ESR_LWO			(1 << 4)
-#define S3C_ESR_PSIF_ONE		(1 << 2)
-#define S3C_ESR_PSIF_TWO		(2 << 2)
-#define S3C_ESR_TX_SUCCESS		(1 << 1)
-#define S3C_ESR_RX_SUCCESS		(1 << 0)
-#define S3C_ECR				S3C_HSUDC_REG(0x30) /* EPn Control */
-#define S3C_ECR_DUEN			(1 << 7)
-#define S3C_ECR_FLUSH			(1 << 6)
-#define S3C_ECR_STALL			(1 << 1)
-#define S3C_ECR_IEMS			(1 << 0)
-#define S3C_BRCR			S3C_HSUDC_REG(0x34) /* Read Count */
-#define S3C_BWCR			S3C_HSUDC_REG(0x38) /* Write Count */
-#define S3C_MPR				S3C_HSUDC_REG(0x3c) /* Max Pkt Size */
-
-#define WAIT_FOR_SETUP			(0)
-#define DATA_STATE_XMIT			(1)
-#define DATA_STATE_RECV			(2)
-
-static const char * const s3c_hsudc_supply_names[] = {
-	"vdda",		/* analog phy supply, 3.3V */
-	"vddi",		/* digital phy supply, 1.2V */
-	"vddosc",	/* oscillator supply, 1.8V - 3.3V */
-};
-
-/**
- * struct s3c_hsudc_ep - Endpoint representation used by driver.
- * @ep: USB gadget layer representation of device endpoint.
- * @name: Endpoint name (as required by ep autoconfiguration).
- * @dev: Reference to the device controller to which this EP belongs.
- * @desc: Endpoint descriptor obtained from the gadget driver.
- * @queue: Transfer request queue for the endpoint.
- * @stopped: Maintains state of endpoint, set if EP is halted.
- * @bEndpointAddress: EP address (including direction bit).
- * @fifo: Base address of EP FIFO.
- */
-struct s3c_hsudc_ep {
-	struct usb_ep ep;
-	char name[20];
-	struct s3c_hsudc *dev;
-	struct list_head queue;
-	u8 stopped;
-	u8 wedge;
-	u8 bEndpointAddress;
-	void __iomem *fifo;
-};
-
-/**
- * struct s3c_hsudc_req - Driver encapsulation of USB gadget transfer request.
- * @req: Reference to USB gadget transfer request.
- * @queue: Used for inserting this request to the endpoint request queue.
- */
-struct s3c_hsudc_req {
-	struct usb_request req;
-	struct list_head queue;
-};
-
-/**
- * struct s3c_hsudc - Driver's abstraction of the device controller.
- * @gadget: Instance of usb_gadget which is referenced by gadget driver.
- * @driver: Reference to currenty active gadget driver.
- * @dev: The device reference used by probe function.
- * @lock: Lock to synchronize the usage of Endpoints (EP's are indexed).
- * @regs: Remapped base address of controller's register space.
- * irq: IRQ number used by the controller.
- * uclk: Reference to the controller clock.
- * ep0state: Current state of EP0.
- * ep: List of endpoints supported by the controller.
- */
-struct s3c_hsudc {
-	struct usb_gadget gadget;
-	struct usb_gadget_driver *driver;
-	struct device *dev;
-	struct s3c24xx_hsudc_platdata *pd;
-	struct usb_phy *transceiver;
-	struct regulator_bulk_data supplies[ARRAY_SIZE(s3c_hsudc_supply_names)];
-	spinlock_t lock;
-	void __iomem *regs;
-	int irq;
-	struct clk *uclk;
-	int ep0state;
-	struct s3c_hsudc_ep ep[];
-};
-
-#define ep_maxpacket(_ep)	((_ep)->ep.maxpacket)
-#define ep_is_in(_ep)		((_ep)->bEndpointAddress & USB_DIR_IN)
-#define ep_index(_ep)		((_ep)->bEndpointAddress & \
-					USB_ENDPOINT_NUMBER_MASK)
-
-static const char driver_name[] = "s3c-udc";
-static const char ep0name[] = "ep0-control";
-
-static inline struct s3c_hsudc_req *our_req(struct usb_request *req)
-{
-	return container_of(req, struct s3c_hsudc_req, req);
-}
-
-static inline struct s3c_hsudc_ep *our_ep(struct usb_ep *ep)
-{
-	return container_of(ep, struct s3c_hsudc_ep, ep);
-}
-
-static inline struct s3c_hsudc *to_hsudc(struct usb_gadget *gadget)
-{
-	return container_of(gadget, struct s3c_hsudc, gadget);
-}
-
-static inline void set_index(struct s3c_hsudc *hsudc, int ep_addr)
-{
-	ep_addr &= USB_ENDPOINT_NUMBER_MASK;
-	writel(ep_addr, hsudc->regs + S3C_IR);
-}
-
-static inline void __orr32(void __iomem *ptr, u32 val)
-{
-	writel(readl(ptr) | val, ptr);
-}
-
-static void s3c_hsudc_init_phy(void)
-{
-	u32 cfg;
-
-	cfg = readl(S3C2443_PWRCFG) | S3C2443_PWRCFG_USBPHY;
-	writel(cfg, S3C2443_PWRCFG);
-
-	cfg = readl(S3C2443_URSTCON);
-	cfg |= (S3C2443_URSTCON_FUNCRST | S3C2443_URSTCON_PHYRST);
-	writel(cfg, S3C2443_URSTCON);
-	mdelay(1);
-
-	cfg = readl(S3C2443_URSTCON);
-	cfg &= ~(S3C2443_URSTCON_FUNCRST | S3C2443_URSTCON_PHYRST);
-	writel(cfg, S3C2443_URSTCON);
-
-	cfg = readl(S3C2443_PHYCTRL);
-	cfg &= ~(S3C2443_PHYCTRL_CLKSEL | S3C2443_PHYCTRL_DSPORT);
-	cfg |= (S3C2443_PHYCTRL_EXTCLK | S3C2443_PHYCTRL_PLLSEL);
-	writel(cfg, S3C2443_PHYCTRL);
-
-	cfg = readl(S3C2443_PHYPWR);
-	cfg &= ~(S3C2443_PHYPWR_FSUSPEND | S3C2443_PHYPWR_PLL_PWRDN |
-		S3C2443_PHYPWR_XO_ON | S3C2443_PHYPWR_PLL_REFCLK |
-		S3C2443_PHYPWR_ANALOG_PD);
-	cfg |= S3C2443_PHYPWR_COMMON_ON;
-	writel(cfg, S3C2443_PHYPWR);
-
-	cfg = readl(S3C2443_UCLKCON);
-	cfg |= (S3C2443_UCLKCON_DETECT_VBUS | S3C2443_UCLKCON_FUNC_CLKEN |
-		S3C2443_UCLKCON_TCLKEN);
-	writel(cfg, S3C2443_UCLKCON);
-}
-
-static void s3c_hsudc_uninit_phy(void)
-{
-	u32 cfg;
-
-	cfg = readl(S3C2443_PWRCFG) & ~S3C2443_PWRCFG_USBPHY;
-	writel(cfg, S3C2443_PWRCFG);
-
-	writel(S3C2443_PHYPWR_FSUSPEND, S3C2443_PHYPWR);
-
-	cfg = readl(S3C2443_UCLKCON) & ~S3C2443_UCLKCON_FUNC_CLKEN;
-	writel(cfg, S3C2443_UCLKCON);
-}
-
-/**
- * s3c_hsudc_complete_request - Complete a transfer request.
- * @hsep: Endpoint to which the request belongs.
- * @hsreq: Transfer request to be completed.
- * @status: Transfer completion status for the transfer request.
- */
-static void s3c_hsudc_complete_request(struct s3c_hsudc_ep *hsep,
-				struct s3c_hsudc_req *hsreq, int status)
-{
-	unsigned int stopped = hsep->stopped;
-	struct s3c_hsudc *hsudc = hsep->dev;
-
-	list_del_init(&hsreq->queue);
-	hsreq->req.status = status;
-
-	if (!ep_index(hsep)) {
-		hsudc->ep0state = WAIT_FOR_SETUP;
-		hsep->bEndpointAddress &= ~USB_DIR_IN;
-	}
-
-	hsep->stopped = 1;
-	spin_unlock(&hsudc->lock);
-	if (hsreq->req.complete != NULL)
-		hsreq->req.complete(&hsep->ep, &hsreq->req);
-	spin_lock(&hsudc->lock);
-	hsep->stopped = stopped;
-}
-
-/**
- * s3c_hsudc_nuke_ep - Terminate all requests queued for a endpoint.
- * @hsep: Endpoint for which queued requests have to be terminated.
- * @status: Transfer completion status for the transfer request.
- */
-static void s3c_hsudc_nuke_ep(struct s3c_hsudc_ep *hsep, int status)
-{
-	struct s3c_hsudc_req *hsreq;
-
-	while (!list_empty(&hsep->queue)) {
-		hsreq = list_entry(hsep->queue.next,
-				struct s3c_hsudc_req, queue);
-		s3c_hsudc_complete_request(hsep, hsreq, status);
-	}
-}
-
-/**
- * s3c_hsudc_stop_activity - Stop activity on all endpoints.
- * @hsudc: Device controller for which EP activity is to be stopped.
- *
- * All the endpoints are stopped and any pending transfer requests if any on
- * the endpoint are terminated.
- */
-static void s3c_hsudc_stop_activity(struct s3c_hsudc *hsudc)
-{
-	struct s3c_hsudc_ep *hsep;
-	int epnum;
-
-	hsudc->gadget.speed = USB_SPEED_UNKNOWN;
-
-	for (epnum = 0; epnum < hsudc->pd->epnum; epnum++) {
-		hsep = &hsudc->ep[epnum];
-		hsep->stopped = 1;
-		s3c_hsudc_nuke_ep(hsep, -ESHUTDOWN);
-	}
-}
-
-/**
- * s3c_hsudc_read_setup_pkt - Read the received setup packet from EP0 fifo.
- * @hsudc: Device controller from which setup packet is to be read.
- * @buf: The buffer into which the setup packet is read.
- *
- * The setup packet received in the EP0 fifo is read and stored into a
- * given buffer address.
- */
-
-static void s3c_hsudc_read_setup_pkt(struct s3c_hsudc *hsudc, u16 *buf)
-{
-	int count;
-
-	count = readl(hsudc->regs + S3C_BRCR);
-	while (count--)
-		*buf++ = (u16)readl(hsudc->regs + S3C_BR(0));
-
-	writel(S3C_EP0SR_RX_SUCCESS, hsudc->regs + S3C_EP0SR);
-}
-
-/**
- * s3c_hsudc_write_fifo - Write next chunk of transfer data to EP fifo.
- * @hsep: Endpoint to which the data is to be written.
- * @hsreq: Transfer request from which the next chunk of data is written.
- *
- * Write the next chunk of data from a transfer request to the endpoint FIFO.
- * If the transfer request completes, 1 is returned, otherwise 0 is returned.
- */
-static int s3c_hsudc_write_fifo(struct s3c_hsudc_ep *hsep,
-				struct s3c_hsudc_req *hsreq)
-{
-	u16 *buf;
-	u32 max = ep_maxpacket(hsep);
-	u32 count, length;
-	bool is_last;
-	void __iomem *fifo = hsep->fifo;
-
-	buf = hsreq->req.buf + hsreq->req.actual;
-	prefetch(buf);
-
-	length = hsreq->req.length - hsreq->req.actual;
-	length = min(length, max);
-	hsreq->req.actual += length;
-
-	writel(length, hsep->dev->regs + S3C_BWCR);
-	for (count = 0; count < length; count += 2)
-		writel(*buf++, fifo);
-
-	if (count != max) {
-		is_last = true;
-	} else {
-		if (hsreq->req.length != hsreq->req.actual || hsreq->req.zero)
-			is_last = false;
-		else
-			is_last = true;
-	}
-
-	if (is_last) {
-		s3c_hsudc_complete_request(hsep, hsreq, 0);
-		return 1;
-	}
-
-	return 0;
-}
-
-/**
- * s3c_hsudc_read_fifo - Read the next chunk of data from EP fifo.
- * @hsep: Endpoint from which the data is to be read.
- * @hsreq: Transfer request to which the next chunk of data read is written.
- *
- * Read the next chunk of data from the endpoint FIFO and a write it to the
- * transfer request buffer. If the transfer request completes, 1 is returned,
- * otherwise 0 is returned.
- */
-static int s3c_hsudc_read_fifo(struct s3c_hsudc_ep *hsep,
-				struct s3c_hsudc_req *hsreq)
-{
-	struct s3c_hsudc *hsudc = hsep->dev;
-	u32 csr, offset;
-	u16 *buf, word;
-	u32 buflen, rcnt, rlen;
-	void __iomem *fifo = hsep->fifo;
-	u32 is_short = 0;
-
-	offset = (ep_index(hsep)) ? S3C_ESR : S3C_EP0SR;
-	csr = readl(hsudc->regs + offset);
-	if (!(csr & S3C_ESR_RX_SUCCESS))
-		return -EINVAL;
-
-	buf = hsreq->req.buf + hsreq->req.actual;
-	prefetchw(buf);
-	buflen = hsreq->req.length - hsreq->req.actual;
-
-	rcnt = readl(hsudc->regs + S3C_BRCR);
-	rlen = (csr & S3C_ESR_LWO) ? (rcnt * 2 - 1) : (rcnt * 2);
-
-	hsreq->req.actual += min(rlen, buflen);
-	is_short = (rlen < hsep->ep.maxpacket);
-
-	while (rcnt-- != 0) {
-		word = (u16)readl(fifo);
-		if (buflen) {
-			*buf++ = word;
-			buflen--;
-		} else {
-			hsreq->req.status = -EOVERFLOW;
-		}
-	}
-
-	writel(S3C_ESR_RX_SUCCESS, hsudc->regs + offset);
-
-	if (is_short || hsreq->req.actual == hsreq->req.length) {
-		s3c_hsudc_complete_request(hsep, hsreq, 0);
-		return 1;
-	}
-
-	return 0;
-}
-
-/**
- * s3c_hsudc_epin_intr - Handle in-endpoint interrupt.
- * @hsudc - Device controller for which the interrupt is to be handled.
- * @ep_idx - Endpoint number on which an interrupt is pending.
- *
- * Handles interrupt for a in-endpoint. The interrupts that are handled are
- * stall and data transmit complete interrupt.
- */
-static void s3c_hsudc_epin_intr(struct s3c_hsudc *hsudc, u32 ep_idx)
-{
-	struct s3c_hsudc_ep *hsep = &hsudc->ep[ep_idx];
-	struct s3c_hsudc_req *hsreq;
-	u32 csr;
-
-	csr = readl(hsudc->regs + S3C_ESR);
-	if (csr & S3C_ESR_STALL) {
-		writel(S3C_ESR_STALL, hsudc->regs + S3C_ESR);
-		return;
-	}
-
-	if (csr & S3C_ESR_TX_SUCCESS) {
-		writel(S3C_ESR_TX_SUCCESS, hsudc->regs + S3C_ESR);
-		if (list_empty(&hsep->queue))
-			return;
-
-		hsreq = list_entry(hsep->queue.next,
-				struct s3c_hsudc_req, queue);
-		if ((s3c_hsudc_write_fifo(hsep, hsreq) == 0) &&
-				(csr & S3C_ESR_PSIF_TWO))
-			s3c_hsudc_write_fifo(hsep, hsreq);
-	}
-}
-
-/**
- * s3c_hsudc_epout_intr - Handle out-endpoint interrupt.
- * @hsudc - Device controller for which the interrupt is to be handled.
- * @ep_idx - Endpoint number on which an interrupt is pending.
- *
- * Handles interrupt for a out-endpoint. The interrupts that are handled are
- * stall, flush and data ready interrupt.
- */
-static void s3c_hsudc_epout_intr(struct s3c_hsudc *hsudc, u32 ep_idx)
-{
-	struct s3c_hsudc_ep *hsep = &hsudc->ep[ep_idx];
-	struct s3c_hsudc_req *hsreq;
-	u32 csr;
-
-	csr = readl(hsudc->regs + S3C_ESR);
-	if (csr & S3C_ESR_STALL) {
-		writel(S3C_ESR_STALL, hsudc->regs + S3C_ESR);
-		return;
-	}
-
-	if (csr & S3C_ESR_FLUSH) {
-		__orr32(hsudc->regs + S3C_ECR, S3C_ECR_FLUSH);
-		return;
-	}
-
-	if (csr & S3C_ESR_RX_SUCCESS) {
-		if (list_empty(&hsep->queue))
-			return;
-
-		hsreq = list_entry(hsep->queue.next,
-				struct s3c_hsudc_req, queue);
-		if (((s3c_hsudc_read_fifo(hsep, hsreq)) == 0) &&
-				(csr & S3C_ESR_PSIF_TWO))
-			s3c_hsudc_read_fifo(hsep, hsreq);
-	}
-}
-
-/** s3c_hsudc_set_halt - Set or clear a endpoint halt.
- * @_ep: Endpoint on which halt has to be set or cleared.
- * @value: 1 for setting halt on endpoint, 0 to clear halt.
- *
- * Set or clear endpoint halt. If halt is set, the endpoint is stopped.
- * If halt is cleared, for in-endpoints, if there are any pending
- * transfer requests, transfers are started.
- */
-static int s3c_hsudc_set_halt(struct usb_ep *_ep, int value)
-{
-	struct s3c_hsudc_ep *hsep = our_ep(_ep);
-	struct s3c_hsudc *hsudc = hsep->dev;
-	struct s3c_hsudc_req *hsreq;
-	unsigned long irqflags;
-	u32 ecr;
-	u32 offset;
-
-	if (value && ep_is_in(hsep) && !list_empty(&hsep->queue))
-		return -EAGAIN;
-
-	spin_lock_irqsave(&hsudc->lock, irqflags);
-	set_index(hsudc, ep_index(hsep));
-	offset = (ep_index(hsep)) ? S3C_ECR : S3C_EP0CR;
-	ecr = readl(hsudc->regs + offset);
-
-	if (value) {
-		ecr |= S3C_ECR_STALL;
-		if (ep_index(hsep))
-			ecr |= S3C_ECR_FLUSH;
-		hsep->stopped = 1;
-	} else {
-		ecr &= ~S3C_ECR_STALL;
-		hsep->stopped = hsep->wedge = 0;
-	}
-	writel(ecr, hsudc->regs + offset);
-
-	if (ep_is_in(hsep) && !list_empty(&hsep->queue) && !value) {
-		hsreq = list_entry(hsep->queue.next,
-			struct s3c_hsudc_req, queue);
-		if (hsreq)
-			s3c_hsudc_write_fifo(hsep, hsreq);
-	}
-
-	spin_unlock_irqrestore(&hsudc->lock, irqflags);
-	return 0;
-}
-
-/** s3c_hsudc_set_wedge - Sets the halt feature with the clear requests ignored
- * @_ep: Endpoint on which wedge has to be set.
- *
- * Sets the halt feature with the clear requests ignored.
- */
-static int s3c_hsudc_set_wedge(struct usb_ep *_ep)
-{
-	struct s3c_hsudc_ep *hsep = our_ep(_ep);
-
-	if (!hsep)
-		return -EINVAL;
-
-	hsep->wedge = 1;
-	return usb_ep_set_halt(_ep);
-}
-
-/** s3c_hsudc_handle_reqfeat - Handle set feature or clear feature requests.
- * @_ep: Device controller on which the set/clear feature needs to be handled.
- * @ctrl: Control request as received on the endpoint 0.
- *
- * Handle set feature or clear feature control requests on the control endpoint.
- */
-static int s3c_hsudc_handle_reqfeat(struct s3c_hsudc *hsudc,
-					struct usb_ctrlrequest *ctrl)
-{
-	struct s3c_hsudc_ep *hsep;
-	bool set = (ctrl->bRequest == USB_REQ_SET_FEATURE);
-	u8 ep_num = ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK;
-
-	if (ctrl->bRequestType == USB_RECIP_ENDPOINT) {
-		hsep = &hsudc->ep[ep_num];
-		switch (le16_to_cpu(ctrl->wValue)) {
-		case USB_ENDPOINT_HALT:
-			if (set || (!set && !hsep->wedge))
-				s3c_hsudc_set_halt(&hsep->ep, set);
-			return 0;
-		}
-	}
-
-	return -ENOENT;
-}
-
-/**
- * s3c_hsudc_process_req_status - Handle get status control request.
- * @hsudc: Device controller on which get status request has be handled.
- * @ctrl: Control request as received on the endpoint 0.
- *
- * Handle get status control request received on control endpoint.
- */
-static void s3c_hsudc_process_req_status(struct s3c_hsudc *hsudc,
-					struct usb_ctrlrequest *ctrl)
-{
-	struct s3c_hsudc_ep *hsep0 = &hsudc->ep[0];
-	struct s3c_hsudc_req hsreq;
-	struct s3c_hsudc_ep *hsep;
-	__le16 reply;
-	u8 epnum;
-
-	switch (ctrl->bRequestType & USB_RECIP_MASK) {
-	case USB_RECIP_DEVICE:
-		reply = cpu_to_le16(0);
-		break;
-
-	case USB_RECIP_INTERFACE:
-		reply = cpu_to_le16(0);
-		break;
-
-	case USB_RECIP_ENDPOINT:
-		epnum = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK;
-		hsep = &hsudc->ep[epnum];
-		reply = cpu_to_le16(hsep->stopped ? 1 : 0);
-		break;
-	}
-
-	INIT_LIST_HEAD(&hsreq.queue);
-	hsreq.req.length = 2;
-	hsreq.req.buf = &reply;
-	hsreq.req.actual = 0;
-	hsreq.req.complete = NULL;
-	s3c_hsudc_write_fifo(hsep0, &hsreq);
-}
-
-/**
- * s3c_hsudc_process_setup - Process control request received on endpoint 0.
- * @hsudc: Device controller on which control request has been received.
- *
- * Read the control request received on endpoint 0, decode it and handle
- * the request.
- */
-static void s3c_hsudc_process_setup(struct s3c_hsudc *hsudc)
-{
-	struct s3c_hsudc_ep *hsep = &hsudc->ep[0];
-	struct usb_ctrlrequest ctrl = {0};
-	int ret;
-
-	s3c_hsudc_nuke_ep(hsep, -EPROTO);
-	s3c_hsudc_read_setup_pkt(hsudc, (u16 *)&ctrl);
-
-	if (ctrl.bRequestType & USB_DIR_IN) {
-		hsep->bEndpointAddress |= USB_DIR_IN;
-		hsudc->ep0state = DATA_STATE_XMIT;
-	} else {
-		hsep->bEndpointAddress &= ~USB_DIR_IN;
-		hsudc->ep0state = DATA_STATE_RECV;
-	}
-
-	switch (ctrl.bRequest) {
-	case USB_REQ_SET_ADDRESS:
-		if (ctrl.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
-			break;
-		hsudc->ep0state = WAIT_FOR_SETUP;
-		return;
-
-	case USB_REQ_GET_STATUS:
-		if ((ctrl.bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD)
-			break;
-		s3c_hsudc_process_req_status(hsudc, &ctrl);
-		return;
-
-	case USB_REQ_SET_FEATURE:
-	case USB_REQ_CLEAR_FEATURE:
-		if ((ctrl.bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD)
-			break;
-		s3c_hsudc_handle_reqfeat(hsudc, &ctrl);
-		hsudc->ep0state = WAIT_FOR_SETUP;
-		return;
-	}
-
-	if (hsudc->driver) {
-		spin_unlock(&hsudc->lock);
-		ret = hsudc->driver->setup(&hsudc->gadget, &ctrl);
-		spin_lock(&hsudc->lock);
-
-		if (ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
-			hsep->bEndpointAddress &= ~USB_DIR_IN;
-			hsudc->ep0state = WAIT_FOR_SETUP;
-		}
-
-		if (ret < 0) {
-			dev_err(hsudc->dev, "setup failed, returned %d\n",
-						ret);
-			s3c_hsudc_set_halt(&hsep->ep, 1);
-			hsudc->ep0state = WAIT_FOR_SETUP;
-			hsep->bEndpointAddress &= ~USB_DIR_IN;
-		}
-	}
-}
-
-/** s3c_hsudc_handle_ep0_intr - Handle endpoint 0 interrupt.
- * @hsudc: Device controller on which endpoint 0 interrupt has occured.
- *
- * Handle endpoint 0 interrupt when it occurs. EP0 interrupt could occur
- * when a stall handshake is sent to host or data is sent/received on
- * endpoint 0.
- */
-static void s3c_hsudc_handle_ep0_intr(struct s3c_hsudc *hsudc)
-{
-	struct s3c_hsudc_ep *hsep = &hsudc->ep[0];
-	struct s3c_hsudc_req *hsreq;
-	u32 csr = readl(hsudc->regs + S3C_EP0SR);
-	u32 ecr;
-
-	if (csr & S3C_EP0SR_STALL) {
-		ecr = readl(hsudc->regs + S3C_EP0CR);
-		ecr &= ~(S3C_ECR_STALL | S3C_ECR_FLUSH);
-		writel(ecr, hsudc->regs + S3C_EP0CR);
-
-		writel(S3C_EP0SR_STALL, hsudc->regs + S3C_EP0SR);
-		hsep->stopped = 0;
-
-		s3c_hsudc_nuke_ep(hsep, -ECONNABORTED);
-		hsudc->ep0state = WAIT_FOR_SETUP;
-		hsep->bEndpointAddress &= ~USB_DIR_IN;
-		return;
-	}
-
-	if (csr & S3C_EP0SR_TX_SUCCESS) {
-		writel(S3C_EP0SR_TX_SUCCESS, hsudc->regs + S3C_EP0SR);
-		if (ep_is_in(hsep)) {
-			if (list_empty(&hsep->queue))
-				return;
-
-			hsreq = list_entry(hsep->queue.next,
-					struct s3c_hsudc_req, queue);
-			s3c_hsudc_write_fifo(hsep, hsreq);
-		}
-	}
-
-	if (csr & S3C_EP0SR_RX_SUCCESS) {
-		if (hsudc->ep0state == WAIT_FOR_SETUP)
-			s3c_hsudc_process_setup(hsudc);
-		else {
-			if (!ep_is_in(hsep)) {
-				if (list_empty(&hsep->queue))
-					return;
-				hsreq = list_entry(hsep->queue.next,
-					struct s3c_hsudc_req, queue);
-				s3c_hsudc_read_fifo(hsep, hsreq);
-			}
-		}
-	}
-}
-
-/**
- * s3c_hsudc_ep_enable - Enable a endpoint.
- * @_ep: The endpoint to be enabled.
- * @desc: Endpoint descriptor.
- *
- * Enables a endpoint when called from the gadget driver. Endpoint stall if
- * any is cleared, transfer type is configured and endpoint interrupt is
- * enabled.
- */
-static int s3c_hsudc_ep_enable(struct usb_ep *_ep,
-				const struct usb_endpoint_descriptor *desc)
-{
-	struct s3c_hsudc_ep *hsep;
-	struct s3c_hsudc *hsudc;
-	unsigned long flags;
-	u32 ecr = 0;
-
-	hsep = our_ep(_ep);
-	if (!_ep || !desc || _ep->name == ep0name
-		|| desc->bDescriptorType != USB_DT_ENDPOINT
-		|| hsep->bEndpointAddress != desc->bEndpointAddress
-		|| ep_maxpacket(hsep) < usb_endpoint_maxp(desc))
-		return -EINVAL;
-
-	if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
-		&& usb_endpoint_maxp(desc) != ep_maxpacket(hsep))
-		|| !desc->wMaxPacketSize)
-		return -ERANGE;
-
-	hsudc = hsep->dev;
-	if (!hsudc->driver || hsudc->gadget.speed == USB_SPEED_UNKNOWN)
-		return -ESHUTDOWN;
-
-	spin_lock_irqsave(&hsudc->lock, flags);
-
-	set_index(hsudc, hsep->bEndpointAddress);
-	ecr |= ((usb_endpoint_xfer_int(desc)) ? S3C_ECR_IEMS : S3C_ECR_DUEN);
-	writel(ecr, hsudc->regs + S3C_ECR);
-
-	hsep->stopped = hsep->wedge = 0;
-	hsep->ep.desc = desc;
-	hsep->ep.maxpacket = usb_endpoint_maxp(desc);
-
-	s3c_hsudc_set_halt(_ep, 0);
-	__set_bit(ep_index(hsep), hsudc->regs + S3C_EIER);
-
-	spin_unlock_irqrestore(&hsudc->lock, flags);
-	return 0;
-}
-
-/**
- * s3c_hsudc_ep_disable - Disable a endpoint.
- * @_ep: The endpoint to be disabled.
- * @desc: Endpoint descriptor.
- *
- * Disables a endpoint when called from the gadget driver.
- */
-static int s3c_hsudc_ep_disable(struct usb_ep *_ep)
-{
-	struct s3c_hsudc_ep *hsep = our_ep(_ep);
-	struct s3c_hsudc *hsudc = hsep->dev;
-	unsigned long flags;
-
-	if (!_ep || !hsep->ep.desc)
-		return -EINVAL;
-
-	spin_lock_irqsave(&hsudc->lock, flags);
-
-	set_index(hsudc, hsep->bEndpointAddress);
-	__clear_bit(ep_index(hsep), hsudc->regs + S3C_EIER);
-
-	s3c_hsudc_nuke_ep(hsep, -ESHUTDOWN);
-
-	hsep->ep.desc = NULL;
-	hsep->stopped = 1;
-
-	spin_unlock_irqrestore(&hsudc->lock, flags);
-	return 0;
-}
-
-/**
- * s3c_hsudc_alloc_request - Allocate a new request.
- * @_ep: Endpoint for which request is allocated (not used).
- * @gfp_flags: Flags used for the allocation.
- *
- * Allocates a single transfer request structure when called from gadget driver.
- */
-static struct usb_request *s3c_hsudc_alloc_request(struct usb_ep *_ep,
-						gfp_t gfp_flags)
-{
-	struct s3c_hsudc_req *hsreq;
-
-	hsreq = kzalloc(sizeof(*hsreq), gfp_flags);
-	if (!hsreq)
-		return NULL;
-
-	INIT_LIST_HEAD(&hsreq->queue);
-	return &hsreq->req;
-}
-
-/**
- * s3c_hsudc_free_request - Deallocate a request.
- * @ep: Endpoint for which request is deallocated (not used).
- * @_req: Request to be deallocated.
- *
- * Allocates a single transfer request structure when called from gadget driver.
- */
-static void s3c_hsudc_free_request(struct usb_ep *ep, struct usb_request *_req)
-{
-	struct s3c_hsudc_req *hsreq;
-
-	hsreq = our_req(_req);
-	WARN_ON(!list_empty(&hsreq->queue));
-	kfree(hsreq);
-}
-
-/**
- * s3c_hsudc_queue - Queue a transfer request for the endpoint.
- * @_ep: Endpoint for which the request is queued.
- * @_req: Request to be queued.
- * @gfp_flags: Not used.
- *
- * Start or enqueue a request for a endpoint when called from gadget driver.
- */
-static int s3c_hsudc_queue(struct usb_ep *_ep, struct usb_request *_req,
-			gfp_t gfp_flags)
-{
-	struct s3c_hsudc_req *hsreq;
-	struct s3c_hsudc_ep *hsep;
-	struct s3c_hsudc *hsudc;
-	unsigned long flags;
-	u32 offset;
-	u32 csr;
-
-	hsreq = our_req(_req);
-	if ((!_req || !_req->complete || !_req->buf ||
-		!list_empty(&hsreq->queue)))
-		return -EINVAL;
-
-	hsep = our_ep(_ep);
-	hsudc = hsep->dev;
-	if (!hsudc->driver || hsudc->gadget.speed == USB_SPEED_UNKNOWN)
-		return -ESHUTDOWN;
-
-	spin_lock_irqsave(&hsudc->lock, flags);
-	set_index(hsudc, hsep->bEndpointAddress);
-
-	_req->status = -EINPROGRESS;
-	_req->actual = 0;
-
-	if (!ep_index(hsep) && _req->length == 0) {
-		hsudc->ep0state = WAIT_FOR_SETUP;
-		s3c_hsudc_complete_request(hsep, hsreq, 0);
-		spin_unlock_irqrestore(&hsudc->lock, flags);
-		return 0;
-	}
-
-	if (list_empty(&hsep->queue) && !hsep->stopped) {
-		offset = (ep_index(hsep)) ? S3C_ESR : S3C_EP0SR;
-		if (ep_is_in(hsep)) {
-			csr = readl(hsudc->regs + offset);
-			if (!(csr & S3C_ESR_TX_SUCCESS) &&
-				(s3c_hsudc_write_fifo(hsep, hsreq) == 1))
-				hsreq = NULL;
-		} else {
-			csr = readl(hsudc->regs + offset);
-			if ((csr & S3C_ESR_RX_SUCCESS)
-				   && (s3c_hsudc_read_fifo(hsep, hsreq) == 1))
-				hsreq = NULL;
-		}
-	}
-
-	if (hsreq)
-		list_add_tail(&hsreq->queue, &hsep->queue);
-
-	spin_unlock_irqrestore(&hsudc->lock, flags);
-	return 0;
-}
-
-/**
- * s3c_hsudc_dequeue - Dequeue a transfer request from an endpoint.
- * @_ep: Endpoint from which the request is dequeued.
- * @_req: Request to be dequeued.
- *
- * Dequeue a request from a endpoint when called from gadget driver.
- */
-static int s3c_hsudc_dequeue(struct usb_ep *_ep, struct usb_request *_req)
-{
-	struct s3c_hsudc_ep *hsep = our_ep(_ep);
-	struct s3c_hsudc *hsudc = hsep->dev;
-	struct s3c_hsudc_req *hsreq;
-	unsigned long flags;
-
-	hsep = our_ep(_ep);
-	if (!_ep || hsep->ep.name == ep0name)
-		return -EINVAL;
-
-	spin_lock_irqsave(&hsudc->lock, flags);
-
-	list_for_each_entry(hsreq, &hsep->queue, queue) {
-		if (&hsreq->req == _req)
-			break;
-	}
-	if (&hsreq->req != _req) {
-		spin_unlock_irqrestore(&hsudc->lock, flags);
-		return -EINVAL;
-	}
-
-	set_index(hsudc, hsep->bEndpointAddress);
-	s3c_hsudc_complete_request(hsep, hsreq, -ECONNRESET);
-
-	spin_unlock_irqrestore(&hsudc->lock, flags);
-	return 0;
-}
-
-static struct usb_ep_ops s3c_hsudc_ep_ops = {
-	.enable = s3c_hsudc_ep_enable,
-	.disable = s3c_hsudc_ep_disable,
-	.alloc_request = s3c_hsudc_alloc_request,
-	.free_request = s3c_hsudc_free_request,
-	.queue = s3c_hsudc_queue,
-	.dequeue = s3c_hsudc_dequeue,
-	.set_halt = s3c_hsudc_set_halt,
-	.set_wedge = s3c_hsudc_set_wedge,
-};
-
-/**
- * s3c_hsudc_initep - Initialize a endpoint to default state.
- * @hsudc - Reference to the device controller.
- * @hsep - Endpoint to be initialized.
- * @epnum - Address to be assigned to the endpoint.
- *
- * Initialize a endpoint with default configuration.
- */
-static void s3c_hsudc_initep(struct s3c_hsudc *hsudc,
-				struct s3c_hsudc_ep *hsep, int epnum)
-{
-	char *dir;
-
-	if ((epnum % 2) == 0) {
-		dir = "out";
-	} else {
-		dir = "in";
-		hsep->bEndpointAddress = USB_DIR_IN;
-	}
-
-	hsep->bEndpointAddress |= epnum;
-	if (epnum)
-		snprintf(hsep->name, sizeof(hsep->name), "ep%d%s", epnum, dir);
-	else
-		snprintf(hsep->name, sizeof(hsep->name), "%s", ep0name);
-
-	INIT_LIST_HEAD(&hsep->queue);
-	INIT_LIST_HEAD(&hsep->ep.ep_list);
-	if (epnum)
-		list_add_tail(&hsep->ep.ep_list, &hsudc->gadget.ep_list);
-
-	hsep->dev = hsudc;
-	hsep->ep.name = hsep->name;
-	usb_ep_set_maxpacket_limit(&hsep->ep, epnum ? 512 : 64);
-	hsep->ep.ops = &s3c_hsudc_ep_ops;
-	hsep->fifo = hsudc->regs + S3C_BR(epnum);
-	hsep->ep.desc = NULL;
-	hsep->stopped = 0;
-	hsep->wedge = 0;
-
-	set_index(hsudc, epnum);
-	writel(hsep->ep.maxpacket, hsudc->regs + S3C_MPR);
-}
-
-/**
- * s3c_hsudc_setup_ep - Configure all endpoints to default state.
- * @hsudc: Reference to device controller.
- *
- * Configures all endpoints to default state.
- */
-static void s3c_hsudc_setup_ep(struct s3c_hsudc *hsudc)
-{
-	int epnum;
-
-	hsudc->ep0state = WAIT_FOR_SETUP;
-	INIT_LIST_HEAD(&hsudc->gadget.ep_list);
-	for (epnum = 0; epnum < hsudc->pd->epnum; epnum++)
-		s3c_hsudc_initep(hsudc, &hsudc->ep[epnum], epnum);
-}
-
-/**
- * s3c_hsudc_reconfig - Reconfigure the device controller to default state.
- * @hsudc: Reference to device controller.
- *
- * Reconfigures the device controller registers to a default state.
- */
-static void s3c_hsudc_reconfig(struct s3c_hsudc *hsudc)
-{
-	writel(0xAA, hsudc->regs + S3C_EDR);
-	writel(1, hsudc->regs + S3C_EIER);
-	writel(0, hsudc->regs + S3C_TR);
-	writel(S3C_SCR_DTZIEN_EN | S3C_SCR_RRD_EN | S3C_SCR_SUS_EN |
-			S3C_SCR_RST_EN, hsudc->regs + S3C_SCR);
-	writel(0, hsudc->regs + S3C_EP0CR);
-
-	s3c_hsudc_setup_ep(hsudc);
-}
-
-/**
- * s3c_hsudc_irq - Interrupt handler for device controller.
- * @irq: Not used.
- * @_dev: Reference to the device controller.
- *
- * Interrupt handler for the device controller. This handler handles controller
- * interrupts and endpoint interrupts.
- */
-static irqreturn_t s3c_hsudc_irq(int irq, void *_dev)
-{
-	struct s3c_hsudc *hsudc = _dev;
-	struct s3c_hsudc_ep *hsep;
-	u32 ep_intr;
-	u32 sys_status;
-	u32 ep_idx;
-
-	spin_lock(&hsudc->lock);
-
-	sys_status = readl(hsudc->regs + S3C_SSR);
-	ep_intr = readl(hsudc->regs + S3C_EIR) & 0x3FF;
-
-	if (!ep_intr && !(sys_status & S3C_SSR_DTZIEN_EN)) {
-		spin_unlock(&hsudc->lock);
-		return IRQ_HANDLED;
-	}
-
-	if (sys_status) {
-		if (sys_status & S3C_SSR_VBUSON)
-			writel(S3C_SSR_VBUSON, hsudc->regs + S3C_SSR);
-
-		if (sys_status & S3C_SSR_ERR)
-			writel(S3C_SSR_ERR, hsudc->regs + S3C_SSR);
-
-		if (sys_status & S3C_SSR_SDE) {
-			writel(S3C_SSR_SDE, hsudc->regs + S3C_SSR);
-			hsudc->gadget.speed = (sys_status & S3C_SSR_HSP) ?
-				USB_SPEED_HIGH : USB_SPEED_FULL;
-		}
-
-		if (sys_status & S3C_SSR_SUSPEND) {
-			writel(S3C_SSR_SUSPEND, hsudc->regs + S3C_SSR);
-			if (hsudc->gadget.speed != USB_SPEED_UNKNOWN
-				&& hsudc->driver && hsudc->driver->suspend)
-				hsudc->driver->suspend(&hsudc->gadget);
-		}
-
-		if (sys_status & S3C_SSR_RESUME) {
-			writel(S3C_SSR_RESUME, hsudc->regs + S3C_SSR);
-			if (hsudc->gadget.speed != USB_SPEED_UNKNOWN
-				&& hsudc->driver && hsudc->driver->resume)
-				hsudc->driver->resume(&hsudc->gadget);
-		}
-
-		if (sys_status & S3C_SSR_RESET) {
-			writel(S3C_SSR_RESET, hsudc->regs + S3C_SSR);
-			for (ep_idx = 0; ep_idx < hsudc->pd->epnum; ep_idx++) {
-				hsep = &hsudc->ep[ep_idx];
-				hsep->stopped = 1;
-				s3c_hsudc_nuke_ep(hsep, -ECONNRESET);
-			}
-			s3c_hsudc_reconfig(hsudc);
-			hsudc->ep0state = WAIT_FOR_SETUP;
-		}
-	}
-
-	if (ep_intr & S3C_EIR_EP0) {
-		writel(S3C_EIR_EP0, hsudc->regs + S3C_EIR);
-		set_index(hsudc, 0);
-		s3c_hsudc_handle_ep0_intr(hsudc);
-	}
-
-	ep_intr >>= 1;
-	ep_idx = 1;
-	while (ep_intr) {
-		if (ep_intr & 1)  {
-			hsep = &hsudc->ep[ep_idx];
-			set_index(hsudc, ep_idx);
-			writel(1 << ep_idx, hsudc->regs + S3C_EIR);
-			if (ep_is_in(hsep))
-				s3c_hsudc_epin_intr(hsudc, ep_idx);
-			else
-				s3c_hsudc_epout_intr(hsudc, ep_idx);
-		}
-		ep_intr >>= 1;
-		ep_idx++;
-	}
-
-	spin_unlock(&hsudc->lock);
-	return IRQ_HANDLED;
-}
-
-static int s3c_hsudc_start(struct usb_gadget *gadget,
-		struct usb_gadget_driver *driver)
-{
-	struct s3c_hsudc *hsudc = to_hsudc(gadget);
-	int ret;
-
-	if (!driver
-		|| driver->max_speed < USB_SPEED_FULL
-		|| !driver->setup)
-		return -EINVAL;
-
-	if (!hsudc)
-		return -ENODEV;
-
-	if (hsudc->driver)
-		return -EBUSY;
-
-	hsudc->driver = driver;
-
-	ret = regulator_bulk_enable(ARRAY_SIZE(hsudc->supplies),
-				    hsudc->supplies);
-	if (ret != 0) {
-		dev_err(hsudc->dev, "failed to enable supplies: %d\n", ret);
-		goto err_supplies;
-	}
-
-	/* connect to bus through transceiver */
-	if (!IS_ERR_OR_NULL(hsudc->transceiver)) {
-		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);
-			goto err_otg;
-		}
-	}
-
-	enable_irq(hsudc->irq);
-	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();
-
-	return 0;
-err_otg:
-	regulator_bulk_disable(ARRAY_SIZE(hsudc->supplies), hsudc->supplies);
-err_supplies:
-	hsudc->driver = NULL;
-	return ret;
-}
-
-static int s3c_hsudc_stop(struct usb_gadget *gadget,
-		struct usb_gadget_driver *driver)
-{
-	struct s3c_hsudc *hsudc = to_hsudc(gadget);
-	unsigned long flags;
-
-	if (!hsudc)
-		return -ENODEV;
-
-	if (!driver || driver != hsudc->driver)
-		return -EINVAL;
-
-	spin_lock_irqsave(&hsudc->lock, flags);
-	hsudc->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 (!IS_ERR_OR_NULL(hsudc->transceiver))
-		(void) otg_set_peripheral(hsudc->transceiver->otg, NULL);
-
-	disable_irq(hsudc->irq);
-
-	regulator_bulk_disable(ARRAY_SIZE(hsudc->supplies), hsudc->supplies);
-
-	dev_info(hsudc->dev, "unregistered gadget driver '%s'\n",
-			driver->driver.name);
-	return 0;
-}
-
-static inline u32 s3c_hsudc_read_frameno(struct s3c_hsudc *hsudc)
-{
-	return readl(hsudc->regs + S3C_FNR) & 0x3FF;
-}
-
-static int s3c_hsudc_gadget_getframe(struct usb_gadget *gadget)
-{
-	return s3c_hsudc_read_frameno(to_hsudc(gadget));
-}
-
-static int s3c_hsudc_vbus_draw(struct usb_gadget *gadget, unsigned mA)
-{
-	struct s3c_hsudc *hsudc = to_hsudc(gadget);
-
-	if (!hsudc)
-		return -ENODEV;
-
-	if (!IS_ERR_OR_NULL(hsudc->transceiver))
-		return usb_phy_set_power(hsudc->transceiver, mA);
-
-	return -EOPNOTSUPP;
-}
-
-static const struct usb_gadget_ops s3c_hsudc_gadget_ops = {
-	.get_frame	= s3c_hsudc_gadget_getframe,
-	.udc_start	= s3c_hsudc_start,
-	.udc_stop	= s3c_hsudc_stop,
-	.vbus_draw	= s3c_hsudc_vbus_draw,
-};
-
-static int s3c_hsudc_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct resource *res;
-	struct s3c_hsudc *hsudc;
-	struct s3c24xx_hsudc_platdata *pd = dev_get_platdata(&pdev->dev);
-	int ret, i;
-
-	hsudc = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsudc) +
-			sizeof(struct s3c_hsudc_ep) * pd->epnum,
-			GFP_KERNEL);
-	if (!hsudc) {
-		dev_err(dev, "cannot allocate memory\n");
-		return -ENOMEM;
-	}
-
-	platform_set_drvdata(pdev, dev);
-	hsudc->dev = dev;
-	hsudc->pd = dev_get_platdata(&pdev->dev);
-
-	hsudc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
-
-	for (i = 0; i < ARRAY_SIZE(hsudc->supplies); i++)
-		hsudc->supplies[i].supply = s3c_hsudc_supply_names[i];
-
-	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(hsudc->supplies),
-				 hsudc->supplies);
-	if (ret != 0) {
-		dev_err(dev, "failed to request supplies: %d\n", ret);
-		goto err_supplies;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
-	hsudc->regs = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(hsudc->regs)) {
-		ret = PTR_ERR(hsudc->regs);
-		goto err_res;
-	}
-
-	spin_lock_init(&hsudc->lock);
-
-	hsudc->gadget.max_speed = USB_SPEED_HIGH;
-	hsudc->gadget.ops = &s3c_hsudc_gadget_ops;
-	hsudc->gadget.name = dev_name(dev);
-	hsudc->gadget.ep0 = &hsudc->ep[0].ep;
-	hsudc->gadget.is_otg = 0;
-	hsudc->gadget.is_a_peripheral = 0;
-	hsudc->gadget.speed = USB_SPEED_UNKNOWN;
-
-	s3c_hsudc_setup_ep(hsudc);
-
-	ret = platform_get_irq(pdev, 0);
-	if (ret < 0) {
-		dev_err(dev, "unable to obtain IRQ number\n");
-		goto err_res;
-	}
-	hsudc->irq = ret;
-
-	ret = devm_request_irq(&pdev->dev, hsudc->irq, s3c_hsudc_irq, 0,
-				driver_name, hsudc);
-	if (ret < 0) {
-		dev_err(dev, "irq request failed\n");
-		goto err_res;
-	}
-
-	hsudc->uclk = devm_clk_get(&pdev->dev, "usb-device");
-	if (IS_ERR(hsudc->uclk)) {
-		dev_err(dev, "failed to find usb-device clock source\n");
-		ret = PTR_ERR(hsudc->uclk);
-		goto err_res;
-	}
-	clk_enable(hsudc->uclk);
-
-	local_irq_disable();
-
-	disable_irq(hsudc->irq);
-	local_irq_enable();
-
-	ret = usb_add_gadget_udc(&pdev->dev, &hsudc->gadget);
-	if (ret)
-		goto err_add_udc;
-
-	pm_runtime_enable(dev);
-
-	return 0;
-err_add_udc:
-	clk_disable(hsudc->uclk);
-err_res:
-	if (!IS_ERR_OR_NULL(hsudc->transceiver))
-		usb_put_phy(hsudc->transceiver);
-
-err_supplies:
-	return ret;
-}
-
-static struct platform_driver s3c_hsudc_driver = {
-	.driver		= {
-		.owner	= THIS_MODULE,
-		.name	= "s3c-hsudc",
-	},
-	.probe		= s3c_hsudc_probe,
-};
-
-module_platform_driver(s3c_hsudc_driver);
-
-MODULE_DESCRIPTION("Samsung S3C24XX USB high-speed controller driver");
-MODULE_AUTHOR("Thomas Abraham <thomas.ab@samsung.com>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:s3c-hsudc");