usb: gadget: remove s3c24xx drivers

The s3c24xx platform is gone, so both the udc and hsudc drivers
can be removed as well.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

6 files changed, 0 insertions, 3571 deletions

diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig
index 0c5640bd6c24..511ab57cdc81 100644
--- a/drivers/usb/gadget/udc/Kconfig
+++ b/drivers/usb/gadget/udc/Kconfig
@@ -206,31 +206,6 @@ config USB_PXA27X
 	   dynamically linked module called "pxa27x_udc" and force all
 	   gadget drivers to also be dynamically linked.
 
-config USB_S3C2410
-	tristate "S3C2410 USB Device Controller"
-	depends on ARCH_S3C24XX
-	help
-	  Samsung's S3C2410 is an ARM-4 processor with an integrated
-	  full speed USB 1.1 device controller.  It has 4 configurable
-	  endpoints, as well as endpoint zero (for control transfers).
-
-	  This driver has been tested on the S3C2410, S3C2412, and
-	  S3C2440 processors.
-
-config USB_S3C2410_DEBUG
-	bool "S3C2410 udc debug messages"
-	depends on USB_S3C2410
-
-config USB_S3C_HSUDC
-	tristate "S3C2416, S3C2443 and S3C2450 USB Device Controller"
-	depends on ARCH_S3C24XX
-	help
-	  Samsung's S3C2416, S3C2443 and S3C2450 is an ARM9 based SoC
-	  integrated with dual speed USB 2.0 device controller. It has
-	  8 endpoints, as well as endpoint zero.
-
-	  This driver has been tested on S3C2416 and S3C2450 processors.
-
 config USB_MV_UDC
 	tristate "Marvell USB2.0 Device Controller"
 	depends on HAS_DMA
diff --git a/drivers/usb/gadget/udc/Makefile b/drivers/usb/gadget/udc/Makefile
index 39daf36a2baa..239ea22bdfd9 100644
--- a/drivers/usb/gadget/udc/Makefile
+++ b/drivers/usb/gadget/udc/Makefile
@@ -17,7 +17,6 @@ obj-$(CONFIG_USB_PXA25X)	+= pxa25x_udc.o
 obj-$(CONFIG_USB_PXA27X)	+= pxa27x_udc.o
 obj-$(CONFIG_USB_GOKU)		+= goku_udc.o
 obj-$(CONFIG_USB_OMAP)		+= omap_udc.o
-obj-$(CONFIG_USB_S3C2410)	+= s3c2410_udc.o
 obj-$(CONFIG_USB_AT91)		+= at91_udc.o
 obj-$(CONFIG_USB_ATMEL_USBA)	+= atmel_usba_udc.o
 obj-$(CONFIG_USB_BCM63XX_UDC)	+= bcm63xx_udc.o
@@ -28,7 +27,6 @@ obj-$(CONFIG_USB_M66592)	+= m66592-udc.o
 obj-$(CONFIG_USB_R8A66597)	+= r8a66597-udc.o
 obj-$(CONFIG_USB_RENESAS_USB3)	+= renesas_usb3.o
 obj-$(CONFIG_USB_FSL_QE)	+= fsl_qe_udc.o
-obj-$(CONFIG_USB_S3C_HSUDC)	+= s3c-hsudc.o
 obj-$(CONFIG_USB_LPC32XX)	+= lpc32xx_udc.o
 obj-$(CONFIG_USB_EG20T)		+= pch_udc.o
 obj-$(CONFIG_USB_MV_UDC)	+= mv_udc.o
diff --git a/drivers/usb/gadget/udc/s3c-hsudc.c b/drivers/usb/gadget/udc/s3c-hsudc.c
deleted file mode 100644
index 4b7eb7701470..000000000000
--- a/drivers/usb/gadget/udc/s3c-hsudc.c
+++ /dev/null
@@ -1,1319 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* 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.
- */
-
-#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>
-
-#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 currently 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);
-}
-
-/**
- * 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);
-	usb_gadget_giveback_request(&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 || !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 occurred.
- *
- * 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 = NULL, *iter;
-	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(iter, &hsep->queue, queue) {
-		if (&iter->req != _req)
-			continue;
-		hsreq = iter;
-		break;
-	}
-	if (!hsreq) {
-		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 const 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;
-
-	if (epnum == 0) {
-		hsep->ep.caps.type_control = true;
-		hsep->ep.caps.dir_in = true;
-		hsep->ep.caps.dir_out = true;
-	} else {
-		hsep->ep.caps.type_iso = true;
-		hsep->ep.caps.type_bulk = true;
-		hsep->ep.caps.type_int = true;
-	}
-
-	if (epnum & 1)
-		hsep->ep.caps.dir_in = true;
-	else
-		hsep->ep.caps.dir_out = true;
-
-	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);
-	s3c_hsudc_reconfig(hsudc);
-
-	pm_runtime_get_sync(hsudc->dev);
-
-	if (hsudc->pd->phy_init)
-		hsudc->pd->phy_init();
-	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 s3c_hsudc *hsudc = to_hsudc(gadget);
-	unsigned long flags;
-
-	if (!hsudc)
-		return -ENODEV;
-
-	spin_lock_irqsave(&hsudc->lock, flags);
-	hsudc->gadget.speed = USB_SPEED_UNKNOWN;
-	if (hsudc->pd->phy_uninit)
-		hsudc->pd->phy_uninit();
-
-	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);
-	hsudc->driver = NULL;
-
-	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 s3c_hsudc *hsudc;
-	struct s3c24xx_hsudc_platdata *pd = dev_get_platdata(&pdev->dev);
-	int ret, i;
-
-	hsudc = devm_kzalloc(&pdev->dev, struct_size(hsudc, ep, pd->epnum),
-			     GFP_KERNEL);
-	if (!hsudc)
-		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) {
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "failed to request supplies: %d\n", ret);
-		goto err_supplies;
-	}
-
-	hsudc->regs = devm_platform_ioremap_resource(pdev, 0);
-	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)
-		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		= {
-		.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");
diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c
deleted file mode 100644
index 8c57b191e52b..000000000000
--- a/drivers/usb/gadget/udc/s3c2410_udc.c
+++ /dev/null
@@ -1,1980 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * linux/drivers/usb/gadget/s3c2410_udc.c
- *
- * Samsung S3C24xx series on-chip full speed USB device controllers
- *
- * Copyright (C) 2004-2007 Herbert Pötzl - Arnaud Patard
- *	Additional cleanups by Ben Dooks <ben-linux@fluff.org>
- */
-
-#define pr_fmt(fmt) "s3c2410_udc: " fmt
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/timer.h>
-#include <linux/list.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-#include <linux/gpio/consumer.h>
-#include <linux/prefetch.h>
-#include <linux/io.h>
-
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-
-#include <linux/usb.h>
-#include <linux/usb/gadget.h>
-
-#include <asm/byteorder.h>
-#include <asm/irq.h>
-#include <asm/unaligned.h>
-
-#include <linux/platform_data/usb-s3c2410_udc.h>
-
-#include "s3c2410_udc.h"
-#include "s3c2410_udc_regs.h"
-
-#define DRIVER_DESC	"S3C2410 USB Device Controller Gadget"
-#define DRIVER_AUTHOR	"Herbert Pötzl <herbert@13thfloor.at>, " \
-			"Arnaud Patard <arnaud.patard@rtp-net.org>"
-
-static const char		gadget_name[] = "s3c2410_udc";
-static const char		driver_desc[] = DRIVER_DESC;
-
-static struct s3c2410_udc	*the_controller;
-static struct clk		*udc_clock;
-static struct clk		*usb_bus_clock;
-static void __iomem		*base_addr;
-static int			irq_usbd;
-static struct dentry		*s3c2410_udc_debugfs_root;
-
-static inline u32 udc_read(u32 reg)
-{
-	return readb(base_addr + reg);
-}
-
-static inline void udc_write(u32 value, u32 reg)
-{
-	writeb(value, base_addr + reg);
-}
-
-static inline void udc_writeb(void __iomem *base, u32 value, u32 reg)
-{
-	writeb(value, base + reg);
-}
-
-static struct s3c2410_udc_mach_info *udc_info;
-
-/*************************** DEBUG FUNCTION ***************************/
-#define DEBUG_NORMAL	1
-#define DEBUG_VERBOSE	2
-
-#ifdef CONFIG_USB_S3C2410_DEBUG
-#define USB_S3C2410_DEBUG_LEVEL 0
-
-static uint32_t s3c2410_ticks = 0;
-
-__printf(2, 3)
-static void dprintk(int level, const char *fmt, ...)
-{
-	static long prevticks;
-	static int invocation;
-	struct va_format vaf;
-	va_list args;
-
-	if (level > USB_S3C2410_DEBUG_LEVEL)
-		return;
-
-	va_start(args, fmt);
-
-	vaf.fmt = fmt;
-	vaf.va = &args;
-
-	if (s3c2410_ticks != prevticks) {
-		prevticks = s3c2410_ticks;
-		invocation = 0;
-	}
-
-	pr_debug("%1lu.%02d USB: %pV", prevticks, invocation++, &vaf);
-
-	va_end(args);
-}
-#else
-__printf(2, 3)
-static void dprintk(int level, const char *fmt, ...)
-{
-}
-#endif
-
-static int s3c2410_udc_debugfs_show(struct seq_file *m, void *p)
-{
-	u32 addr_reg, pwr_reg, ep_int_reg, usb_int_reg;
-	u32 ep_int_en_reg, usb_int_en_reg, ep0_csr;
-	u32 ep1_i_csr1, ep1_i_csr2, ep1_o_csr1, ep1_o_csr2;
-	u32 ep2_i_csr1, ep2_i_csr2, ep2_o_csr1, ep2_o_csr2;
-
-	addr_reg       = udc_read(S3C2410_UDC_FUNC_ADDR_REG);
-	pwr_reg        = udc_read(S3C2410_UDC_PWR_REG);
-	ep_int_reg     = udc_read(S3C2410_UDC_EP_INT_REG);
-	usb_int_reg    = udc_read(S3C2410_UDC_USB_INT_REG);
-	ep_int_en_reg  = udc_read(S3C2410_UDC_EP_INT_EN_REG);
-	usb_int_en_reg = udc_read(S3C2410_UDC_USB_INT_EN_REG);
-	udc_write(0, S3C2410_UDC_INDEX_REG);
-	ep0_csr        = udc_read(S3C2410_UDC_IN_CSR1_REG);
-	udc_write(1, S3C2410_UDC_INDEX_REG);
-	ep1_i_csr1     = udc_read(S3C2410_UDC_IN_CSR1_REG);
-	ep1_i_csr2     = udc_read(S3C2410_UDC_IN_CSR2_REG);
-	ep1_o_csr1     = udc_read(S3C2410_UDC_IN_CSR1_REG);
-	ep1_o_csr2     = udc_read(S3C2410_UDC_IN_CSR2_REG);
-	udc_write(2, S3C2410_UDC_INDEX_REG);
-	ep2_i_csr1     = udc_read(S3C2410_UDC_IN_CSR1_REG);
-	ep2_i_csr2     = udc_read(S3C2410_UDC_IN_CSR2_REG);
-	ep2_o_csr1     = udc_read(S3C2410_UDC_IN_CSR1_REG);
-	ep2_o_csr2     = udc_read(S3C2410_UDC_IN_CSR2_REG);
-
-	seq_printf(m, "FUNC_ADDR_REG  : 0x%04X\n"
-		 "PWR_REG        : 0x%04X\n"
-		 "EP_INT_REG     : 0x%04X\n"
-		 "USB_INT_REG    : 0x%04X\n"
-		 "EP_INT_EN_REG  : 0x%04X\n"
-		 "USB_INT_EN_REG : 0x%04X\n"
-		 "EP0_CSR        : 0x%04X\n"
-		 "EP1_I_CSR1     : 0x%04X\n"
-		 "EP1_I_CSR2     : 0x%04X\n"
-		 "EP1_O_CSR1     : 0x%04X\n"
-		 "EP1_O_CSR2     : 0x%04X\n"
-		 "EP2_I_CSR1     : 0x%04X\n"
-		 "EP2_I_CSR2     : 0x%04X\n"
-		 "EP2_O_CSR1     : 0x%04X\n"
-		 "EP2_O_CSR2     : 0x%04X\n",
-			addr_reg, pwr_reg, ep_int_reg, usb_int_reg,
-			ep_int_en_reg, usb_int_en_reg, ep0_csr,
-			ep1_i_csr1, ep1_i_csr2, ep1_o_csr1, ep1_o_csr2,
-			ep2_i_csr1, ep2_i_csr2, ep2_o_csr1, ep2_o_csr2
-		);
-
-	return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(s3c2410_udc_debugfs);
-
-/* io macros */
-
-static inline void s3c2410_udc_clear_ep0_opr(void __iomem *base)
-{
-	udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
-	udc_writeb(base, S3C2410_UDC_EP0_CSR_SOPKTRDY,
-			S3C2410_UDC_EP0_CSR_REG);
-}
-
-static inline void s3c2410_udc_clear_ep0_sst(void __iomem *base)
-{
-	udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
-	writeb(0x00, base + S3C2410_UDC_EP0_CSR_REG);
-}
-
-static inline void s3c2410_udc_clear_ep0_se(void __iomem *base)
-{
-	udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
-	udc_writeb(base, S3C2410_UDC_EP0_CSR_SSE, S3C2410_UDC_EP0_CSR_REG);
-}
-
-static inline void s3c2410_udc_set_ep0_ipr(void __iomem *base)
-{
-	udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
-	udc_writeb(base, S3C2410_UDC_EP0_CSR_IPKRDY, S3C2410_UDC_EP0_CSR_REG);
-}
-
-static inline void s3c2410_udc_set_ep0_de(void __iomem *base)
-{
-	udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
-	udc_writeb(base, S3C2410_UDC_EP0_CSR_DE, S3C2410_UDC_EP0_CSR_REG);
-}
-
-static inline void s3c2410_udc_set_ep0_ss(void __iomem *b)
-{
-	udc_writeb(b, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
-	udc_writeb(b, S3C2410_UDC_EP0_CSR_SENDSTL, S3C2410_UDC_EP0_CSR_REG);
-}
-
-static inline void s3c2410_udc_set_ep0_de_out(void __iomem *base)
-{
-	udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
-
-	udc_writeb(base, (S3C2410_UDC_EP0_CSR_SOPKTRDY
-				| S3C2410_UDC_EP0_CSR_DE),
-			S3C2410_UDC_EP0_CSR_REG);
-}
-
-static inline void s3c2410_udc_set_ep0_de_in(void __iomem *base)
-{
-	udc_writeb(base, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
-	udc_writeb(base, (S3C2410_UDC_EP0_CSR_IPKRDY
-			| S3C2410_UDC_EP0_CSR_DE),
-		S3C2410_UDC_EP0_CSR_REG);
-}
-
-/*------------------------- I/O ----------------------------------*/
-
-/*
- *	s3c2410_udc_done
- */
-static void s3c2410_udc_done(struct s3c2410_ep *ep,
-		struct s3c2410_request *req, int status)
-{
-	unsigned halted = ep->halted;
-
-	list_del_init(&req->queue);
-
-	if (likely(req->req.status == -EINPROGRESS))
-		req->req.status = status;
-	else
-		status = req->req.status;
-
-	ep->halted = 1;
-	usb_gadget_giveback_request(&ep->ep, &req->req);
-	ep->halted = halted;
-}
-
-static void s3c2410_udc_nuke(struct s3c2410_udc *udc,
-		struct s3c2410_ep *ep, int status)
-{
-	while (!list_empty(&ep->queue)) {
-		struct s3c2410_request *req;
-		req = list_entry(ep->queue.next, struct s3c2410_request,
-				queue);
-		s3c2410_udc_done(ep, req, status);
-	}
-}
-
-static inline int s3c2410_udc_fifo_count_out(void)
-{
-	int tmp;
-
-	tmp = udc_read(S3C2410_UDC_OUT_FIFO_CNT2_REG) << 8;
-	tmp |= udc_read(S3C2410_UDC_OUT_FIFO_CNT1_REG);
-	return tmp;
-}
-
-/*
- *	s3c2410_udc_write_packet
- */
-static inline int s3c2410_udc_write_packet(int fifo,
-		struct s3c2410_request *req,
-		unsigned max)
-{
-	unsigned len = min(req->req.length - req->req.actual, max);
-	u8 *buf = req->req.buf + req->req.actual;
-
-	prefetch(buf);
-
-	dprintk(DEBUG_VERBOSE, "%s %d %d %d %d\n", __func__,
-		req->req.actual, req->req.length, len, req->req.actual + len);
-
-	req->req.actual += len;
-
-	udelay(5);
-	writesb(base_addr + fifo, buf, len);
-	return len;
-}
-
-/*
- *	s3c2410_udc_write_fifo
- *
- * return:  0 = still running, 1 = completed, negative = errno
- */
-static int s3c2410_udc_write_fifo(struct s3c2410_ep *ep,
-		struct s3c2410_request *req)
-{
-	unsigned	count;
-	int		is_last;
-	u32		idx;
-	int		fifo_reg;
-	u32		ep_csr;
-
-	idx = ep->bEndpointAddress & 0x7F;
-	switch (idx) {
-	default:
-		idx = 0;
-		fallthrough;
-	case 0:
-		fifo_reg = S3C2410_UDC_EP0_FIFO_REG;
-		break;
-	case 1:
-		fifo_reg = S3C2410_UDC_EP1_FIFO_REG;
-		break;
-	case 2:
-		fifo_reg = S3C2410_UDC_EP2_FIFO_REG;
-		break;
-	case 3:
-		fifo_reg = S3C2410_UDC_EP3_FIFO_REG;
-		break;
-	case 4:
-		fifo_reg = S3C2410_UDC_EP4_FIFO_REG;
-		break;
-	}
-
-	count = s3c2410_udc_write_packet(fifo_reg, req, ep->ep.maxpacket);
-
-	/* last packet is often short (sometimes a zlp) */
-	if (count != ep->ep.maxpacket)
-		is_last = 1;
-	else if (req->req.length != req->req.actual || req->req.zero)
-		is_last = 0;
-	else
-		is_last = 2;
-
-	/* Only ep0 debug messages are interesting */
-	if (idx == 0)
-		dprintk(DEBUG_NORMAL,
-			"Written ep%d %d.%d of %d b [last %d,z %d]\n",
-			idx, count, req->req.actual, req->req.length,
-			is_last, req->req.zero);
-
-	if (is_last) {
-		/* The order is important. It prevents sending 2 packets
-		 * at the same time */
-
-		if (idx == 0) {
-			/* Reset signal => no need to say 'data sent' */
-			if (!(udc_read(S3C2410_UDC_USB_INT_REG)
-					& S3C2410_UDC_USBINT_RESET))
-				s3c2410_udc_set_ep0_de_in(base_addr);
-			ep->dev->ep0state = EP0_IDLE;
-		} else {
-			udc_write(idx, S3C2410_UDC_INDEX_REG);
-			ep_csr = udc_read(S3C2410_UDC_IN_CSR1_REG);
-			udc_write(idx, S3C2410_UDC_INDEX_REG);
-			udc_write(ep_csr | S3C2410_UDC_ICSR1_PKTRDY,
-					S3C2410_UDC_IN_CSR1_REG);
-		}
-
-		s3c2410_udc_done(ep, req, 0);
-		is_last = 1;
-	} else {
-		if (idx == 0) {
-			/* Reset signal => no need to say 'data sent' */
-			if (!(udc_read(S3C2410_UDC_USB_INT_REG)
-					& S3C2410_UDC_USBINT_RESET))
-				s3c2410_udc_set_ep0_ipr(base_addr);
-		} else {
-			udc_write(idx, S3C2410_UDC_INDEX_REG);
-			ep_csr = udc_read(S3C2410_UDC_IN_CSR1_REG);
-			udc_write(idx, S3C2410_UDC_INDEX_REG);
-			udc_write(ep_csr | S3C2410_UDC_ICSR1_PKTRDY,
-					S3C2410_UDC_IN_CSR1_REG);
-		}
-	}
-
-	return is_last;
-}
-
-static inline int s3c2410_udc_read_packet(int fifo, u8 *buf,
-		struct s3c2410_request *req, unsigned avail)
-{
-	unsigned len;
-
-	len = min(req->req.length - req->req.actual, avail);
-	req->req.actual += len;
-
-	readsb(fifo + base_addr, buf, len);
-	return len;
-}
-
-/*
- * return:  0 = still running, 1 = queue empty, negative = errno
- */
-static int s3c2410_udc_read_fifo(struct s3c2410_ep *ep,
-				 struct s3c2410_request *req)
-{
-	u8		*buf;
-	u32		ep_csr;
-	unsigned	bufferspace;
-	int		is_last = 1;
-	unsigned	avail;
-	int		fifo_count = 0;
-	u32		idx;
-	int		fifo_reg;
-
-	idx = ep->bEndpointAddress & 0x7F;
-
-	switch (idx) {
-	default:
-		idx = 0;
-		fallthrough;
-	case 0:
-		fifo_reg = S3C2410_UDC_EP0_FIFO_REG;
-		break;
-	case 1:
-		fifo_reg = S3C2410_UDC_EP1_FIFO_REG;
-		break;
-	case 2:
-		fifo_reg = S3C2410_UDC_EP2_FIFO_REG;
-		break;
-	case 3:
-		fifo_reg = S3C2410_UDC_EP3_FIFO_REG;
-		break;
-	case 4:
-		fifo_reg = S3C2410_UDC_EP4_FIFO_REG;
-		break;
-	}
-
-	if (!req->req.length)
-		return 1;
-
-	buf = req->req.buf + req->req.actual;
-	bufferspace = req->req.length - req->req.actual;
-	if (!bufferspace) {
-		dprintk(DEBUG_NORMAL, "%s: buffer full!\n", __func__);
-		return -1;
-	}
-
-	udc_write(idx, S3C2410_UDC_INDEX_REG);
-
-	fifo_count = s3c2410_udc_fifo_count_out();
-	dprintk(DEBUG_NORMAL, "%s fifo count : %d\n", __func__, fifo_count);
-
-	if (fifo_count > ep->ep.maxpacket)
-		avail = ep->ep.maxpacket;
-	else
-		avail = fifo_count;
-
-	fifo_count = s3c2410_udc_read_packet(fifo_reg, buf, req, avail);
-
-	/* checking this with ep0 is not accurate as we already
-	 * read a control request
-	 **/
-	if (idx != 0 && fifo_count < ep->ep.maxpacket) {
-		is_last = 1;
-		/* overflowed this request?  flush extra data */
-		if (fifo_count != avail)
-			req->req.status = -EOVERFLOW;
-	} else {
-		is_last = (req->req.length <= req->req.actual) ? 1 : 0;
-	}
-
-	udc_write(idx, S3C2410_UDC_INDEX_REG);
-	fifo_count = s3c2410_udc_fifo_count_out();
-
-	/* Only ep0 debug messages are interesting */
-	if (idx == 0)
-		dprintk(DEBUG_VERBOSE, "%s fifo count : %d [last %d]\n",
-			__func__, fifo_count, is_last);
-
-	if (is_last) {
-		if (idx == 0) {
-			s3c2410_udc_set_ep0_de_out(base_addr);
-			ep->dev->ep0state = EP0_IDLE;
-		} else {
-			udc_write(idx, S3C2410_UDC_INDEX_REG);
-			ep_csr = udc_read(S3C2410_UDC_OUT_CSR1_REG);
-			udc_write(idx, S3C2410_UDC_INDEX_REG);
-			udc_write(ep_csr & ~S3C2410_UDC_OCSR1_PKTRDY,
-					S3C2410_UDC_OUT_CSR1_REG);
-		}
-
-		s3c2410_udc_done(ep, req, 0);
-	} else {
-		if (idx == 0) {
-			s3c2410_udc_clear_ep0_opr(base_addr);
-		} else {
-			udc_write(idx, S3C2410_UDC_INDEX_REG);
-			ep_csr = udc_read(S3C2410_UDC_OUT_CSR1_REG);
-			udc_write(idx, S3C2410_UDC_INDEX_REG);
-			udc_write(ep_csr & ~S3C2410_UDC_OCSR1_PKTRDY,
-					S3C2410_UDC_OUT_CSR1_REG);
-		}
-	}
-
-	return is_last;
-}
-
-static int s3c2410_udc_read_fifo_crq(struct usb_ctrlrequest *crq)
-{
-	unsigned char *outbuf = (unsigned char *)crq;
-	int bytes_read = 0;
-
-	udc_write(0, S3C2410_UDC_INDEX_REG);
-
-	bytes_read = s3c2410_udc_fifo_count_out();
-
-	dprintk(DEBUG_NORMAL, "%s: fifo_count=%d\n", __func__, bytes_read);
-
-	if (bytes_read > sizeof(struct usb_ctrlrequest))
-		bytes_read = sizeof(struct usb_ctrlrequest);
-
-	readsb(S3C2410_UDC_EP0_FIFO_REG + base_addr, outbuf, bytes_read);
-
-	dprintk(DEBUG_VERBOSE, "%s: len=%d %02x:%02x {%x,%x,%x}\n", __func__,
-		bytes_read, crq->bRequest, crq->bRequestType,
-		crq->wValue, crq->wIndex, crq->wLength);
-
-	return bytes_read;
-}
-
-static int s3c2410_udc_get_status(struct s3c2410_udc *dev,
-		struct usb_ctrlrequest *crq)
-{
-	u16 status = 0;
-	u8 ep_num = crq->wIndex & 0x7F;
-	u8 is_in = crq->wIndex & USB_DIR_IN;
-
-	switch (crq->bRequestType & USB_RECIP_MASK) {
-	case USB_RECIP_INTERFACE:
-		break;
-
-	case USB_RECIP_DEVICE:
-		status = dev->devstatus;
-		break;
-
-	case USB_RECIP_ENDPOINT:
-		if (ep_num > 4 || crq->wLength > 2)
-			return 1;
-
-		if (ep_num == 0) {
-			udc_write(0, S3C2410_UDC_INDEX_REG);
-			status = udc_read(S3C2410_UDC_IN_CSR1_REG);
-			status = status & S3C2410_UDC_EP0_CSR_SENDSTL;
-		} else {
-			udc_write(ep_num, S3C2410_UDC_INDEX_REG);
-			if (is_in) {
-				status = udc_read(S3C2410_UDC_IN_CSR1_REG);
-				status = status & S3C2410_UDC_ICSR1_SENDSTL;
-			} else {
-				status = udc_read(S3C2410_UDC_OUT_CSR1_REG);
-				status = status & S3C2410_UDC_OCSR1_SENDSTL;
-			}
-		}
-
-		status = status ? 1 : 0;
-		break;
-
-	default:
-		return 1;
-	}
-
-	/* Seems to be needed to get it working. ouch :( */
-	udelay(5);
-	udc_write(status & 0xFF, S3C2410_UDC_EP0_FIFO_REG);
-	udc_write(status >> 8, S3C2410_UDC_EP0_FIFO_REG);
-	s3c2410_udc_set_ep0_de_in(base_addr);
-
-	return 0;
-}
-/*------------------------- usb state machine -------------------------------*/
-static int s3c2410_udc_set_halt(struct usb_ep *_ep, int value);
-
-static void s3c2410_udc_handle_ep0_idle(struct s3c2410_udc *dev,
-					struct s3c2410_ep *ep,
-					struct usb_ctrlrequest *crq,
-					u32 ep0csr)
-{
-	int len, ret, tmp;
-
-	/* start control request? */
-	if (!(ep0csr & S3C2410_UDC_EP0_CSR_OPKRDY))
-		return;
-
-	s3c2410_udc_nuke(dev, ep, -EPROTO);
-
-	len = s3c2410_udc_read_fifo_crq(crq);
-	if (len != sizeof(*crq)) {
-		dprintk(DEBUG_NORMAL, "setup begin: fifo READ ERROR"
-			" wanted %d bytes got %d. Stalling out...\n",
-			sizeof(*crq), len);
-		s3c2410_udc_set_ep0_ss(base_addr);
-		return;
-	}
-
-	dprintk(DEBUG_NORMAL, "bRequest = %d bRequestType %d wLength = %d\n",
-		crq->bRequest, crq->bRequestType, crq->wLength);
-
-	/* cope with automagic for some standard requests. */
-	dev->req_std = (crq->bRequestType & USB_TYPE_MASK)
-		== USB_TYPE_STANDARD;
-	dev->req_config = 0;
-	dev->req_pending = 1;
-
-	switch (crq->bRequest) {
-	case USB_REQ_SET_CONFIGURATION:
-		dprintk(DEBUG_NORMAL, "USB_REQ_SET_CONFIGURATION ...\n");
-
-		if (crq->bRequestType == USB_RECIP_DEVICE) {
-			dev->req_config = 1;
-			s3c2410_udc_set_ep0_de_out(base_addr);
-		}
-		break;
-
-	case USB_REQ_SET_INTERFACE:
-		dprintk(DEBUG_NORMAL, "USB_REQ_SET_INTERFACE ...\n");
-
-		if (crq->bRequestType == USB_RECIP_INTERFACE) {
-			dev->req_config = 1;
-			s3c2410_udc_set_ep0_de_out(base_addr);
-		}
-		break;
-
-	case USB_REQ_SET_ADDRESS:
-		dprintk(DEBUG_NORMAL, "USB_REQ_SET_ADDRESS ...\n");
-
-		if (crq->bRequestType == USB_RECIP_DEVICE) {
-			tmp = crq->wValue & 0x7F;
-			dev->address = tmp;
-			udc_write((tmp | S3C2410_UDC_FUNCADDR_UPDATE),
-					S3C2410_UDC_FUNC_ADDR_REG);
-			s3c2410_udc_set_ep0_de_out(base_addr);
-			return;
-		}
-		break;
-
-	case USB_REQ_GET_STATUS:
-		dprintk(DEBUG_NORMAL, "USB_REQ_GET_STATUS ...\n");
-		s3c2410_udc_clear_ep0_opr(base_addr);
-
-		if (dev->req_std) {
-			if (!s3c2410_udc_get_status(dev, crq))
-				return;
-		}
-		break;
-
-	case USB_REQ_CLEAR_FEATURE:
-		s3c2410_udc_clear_ep0_opr(base_addr);
-
-		if (crq->bRequestType != USB_RECIP_ENDPOINT)
-			break;
-
-		if (crq->wValue != USB_ENDPOINT_HALT || crq->wLength != 0)
-			break;
-
-		s3c2410_udc_set_halt(&dev->ep[crq->wIndex & 0x7f].ep, 0);
-		s3c2410_udc_set_ep0_de_out(base_addr);
-		return;
-
-	case USB_REQ_SET_FEATURE:
-		s3c2410_udc_clear_ep0_opr(base_addr);
-
-		if (crq->bRequestType != USB_RECIP_ENDPOINT)
-			break;
-
-		if (crq->wValue != USB_ENDPOINT_HALT || crq->wLength != 0)
-			break;
-
-		s3c2410_udc_set_halt(&dev->ep[crq->wIndex & 0x7f].ep, 1);
-		s3c2410_udc_set_ep0_de_out(base_addr);
-		return;
-
-	default:
-		s3c2410_udc_clear_ep0_opr(base_addr);
-		break;
-	}
-
-	if (crq->bRequestType & USB_DIR_IN)
-		dev->ep0state = EP0_IN_DATA_PHASE;
-	else
-		dev->ep0state = EP0_OUT_DATA_PHASE;
-
-	if (!dev->driver)
-		return;
-
-	/* deliver the request to the gadget driver */
-	ret = dev->driver->setup(&dev->gadget, crq);
-	if (ret < 0) {
-		if (dev->req_config) {
-			dprintk(DEBUG_NORMAL, "config change %02x fail %d?\n",
-				crq->bRequest, ret);
-			return;
-		}
-
-		if (ret == -EOPNOTSUPP)
-			dprintk(DEBUG_NORMAL, "Operation not supported\n");
-		else
-			dprintk(DEBUG_NORMAL,
-				"dev->driver->setup failed. (%d)\n", ret);
-
-		udelay(5);
-		s3c2410_udc_set_ep0_ss(base_addr);
-		s3c2410_udc_set_ep0_de_out(base_addr);
-		dev->ep0state = EP0_IDLE;
-		/* deferred i/o == no response yet */
-	} else if (dev->req_pending) {
-		dprintk(DEBUG_VERBOSE, "dev->req_pending... what now?\n");
-		dev->req_pending = 0;
-	}
-
-	dprintk(DEBUG_VERBOSE, "ep0state %s\n", ep0states[dev->ep0state]);
-}
-
-static void s3c2410_udc_handle_ep0(struct s3c2410_udc *dev)
-{
-	u32			ep0csr;
-	struct s3c2410_ep	*ep = &dev->ep[0];
-	struct s3c2410_request	*req;
-	struct usb_ctrlrequest	crq;
-
-	if (list_empty(&ep->queue))
-		req = NULL;
-	else
-		req = list_entry(ep->queue.next, struct s3c2410_request, queue);
-
-	/* We make the assumption that S3C2410_UDC_IN_CSR1_REG equal to
-	 * S3C2410_UDC_EP0_CSR_REG when index is zero */
-
-	udc_write(0, S3C2410_UDC_INDEX_REG);
-	ep0csr = udc_read(S3C2410_UDC_IN_CSR1_REG);
-
-	dprintk(DEBUG_NORMAL, "ep0csr %x ep0state %s\n",
-		ep0csr, ep0states[dev->ep0state]);
-
-	/* clear stall status */
-	if (ep0csr & S3C2410_UDC_EP0_CSR_SENTSTL) {
-		s3c2410_udc_nuke(dev, ep, -EPIPE);
-		dprintk(DEBUG_NORMAL, "... clear SENT_STALL ...\n");
-		s3c2410_udc_clear_ep0_sst(base_addr);
-		dev->ep0state = EP0_IDLE;
-		return;
-	}
-
-	/* clear setup end */
-	if (ep0csr & S3C2410_UDC_EP0_CSR_SE) {
-		dprintk(DEBUG_NORMAL, "... serviced SETUP_END ...\n");
-		s3c2410_udc_nuke(dev, ep, 0);
-		s3c2410_udc_clear_ep0_se(base_addr);
-		dev->ep0state = EP0_IDLE;
-	}
-
-	switch (dev->ep0state) {
-	case EP0_IDLE:
-		s3c2410_udc_handle_ep0_idle(dev, ep, &crq, ep0csr);
-		break;
-
-	case EP0_IN_DATA_PHASE:			/* GET_DESCRIPTOR etc */
-		dprintk(DEBUG_NORMAL, "EP0_IN_DATA_PHASE ... what now?\n");
-		if (!(ep0csr & S3C2410_UDC_EP0_CSR_IPKRDY) && req)
-			s3c2410_udc_write_fifo(ep, req);
-		break;
-
-	case EP0_OUT_DATA_PHASE:		/* SET_DESCRIPTOR etc */
-		dprintk(DEBUG_NORMAL, "EP0_OUT_DATA_PHASE ... what now?\n");
-		if ((ep0csr & S3C2410_UDC_EP0_CSR_OPKRDY) && req)
-			s3c2410_udc_read_fifo(ep, req);
-		break;
-
-	case EP0_END_XFER:
-		dprintk(DEBUG_NORMAL, "EP0_END_XFER ... what now?\n");
-		dev->ep0state = EP0_IDLE;
-		break;
-
-	case EP0_STALL:
-		dprintk(DEBUG_NORMAL, "EP0_STALL ... what now?\n");
-		dev->ep0state = EP0_IDLE;
-		break;
-	}
-}
-
-/*
- *	handle_ep - Manage I/O endpoints
- */
-
-static void s3c2410_udc_handle_ep(struct s3c2410_ep *ep)
-{
-	struct s3c2410_request	*req;
-	int			is_in = ep->bEndpointAddress & USB_DIR_IN;
-	u32			ep_csr1;
-	u32			idx;
-
-	if (likely(!list_empty(&ep->queue)))
-		req = list_entry(ep->queue.next,
-				struct s3c2410_request, queue);
-	else
-		req = NULL;
-
-	idx = ep->bEndpointAddress & 0x7F;
-
-	if (is_in) {
-		udc_write(idx, S3C2410_UDC_INDEX_REG);
-		ep_csr1 = udc_read(S3C2410_UDC_IN_CSR1_REG);
-		dprintk(DEBUG_VERBOSE, "ep%01d write csr:%02x %d\n",
-			idx, ep_csr1, req ? 1 : 0);
-
-		if (ep_csr1 & S3C2410_UDC_ICSR1_SENTSTL) {
-			dprintk(DEBUG_VERBOSE, "st\n");
-			udc_write(idx, S3C2410_UDC_INDEX_REG);
-			udc_write(ep_csr1 & ~S3C2410_UDC_ICSR1_SENTSTL,
-					S3C2410_UDC_IN_CSR1_REG);
-			return;
-		}
-
-		if (!(ep_csr1 & S3C2410_UDC_ICSR1_PKTRDY) && req)
-			s3c2410_udc_write_fifo(ep, req);
-	} else {
-		udc_write(idx, S3C2410_UDC_INDEX_REG);
-		ep_csr1 = udc_read(S3C2410_UDC_OUT_CSR1_REG);
-		dprintk(DEBUG_VERBOSE, "ep%01d rd csr:%02x\n", idx, ep_csr1);
-
-		if (ep_csr1 & S3C2410_UDC_OCSR1_SENTSTL) {
-			udc_write(idx, S3C2410_UDC_INDEX_REG);
-			udc_write(ep_csr1 & ~S3C2410_UDC_OCSR1_SENTSTL,
-					S3C2410_UDC_OUT_CSR1_REG);
-			return;
-		}
-
-		if ((ep_csr1 & S3C2410_UDC_OCSR1_PKTRDY) && req)
-			s3c2410_udc_read_fifo(ep, req);
-	}
-}
-
-/*
- *	s3c2410_udc_irq - interrupt handler
- */
-static irqreturn_t s3c2410_udc_irq(int dummy, void *_dev)
-{
-	struct s3c2410_udc *dev = _dev;
-	int usb_status;
-	int usbd_status;
-	int pwr_reg;
-	int ep0csr;
-	int i;
-	u32 idx, idx2;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev->lock, flags);
-
-	/* Driver connected ? */
-	if (!dev->driver) {
-		/* Clear interrupts */
-		udc_write(udc_read(S3C2410_UDC_USB_INT_REG),
-				S3C2410_UDC_USB_INT_REG);
-		udc_write(udc_read(S3C2410_UDC_EP_INT_REG),
-				S3C2410_UDC_EP_INT_REG);
-	}
-
-	/* Save index */
-	idx = udc_read(S3C2410_UDC_INDEX_REG);
-
-	/* Read status registers */
-	usb_status = udc_read(S3C2410_UDC_USB_INT_REG);
-	usbd_status = udc_read(S3C2410_UDC_EP_INT_REG);
-	pwr_reg = udc_read(S3C2410_UDC_PWR_REG);
-
-	udc_writeb(base_addr, S3C2410_UDC_INDEX_EP0, S3C2410_UDC_INDEX_REG);
-	ep0csr = udc_read(S3C2410_UDC_IN_CSR1_REG);
-
-	dprintk(DEBUG_NORMAL, "usbs=%02x, usbds=%02x, pwr=%02x ep0csr=%02x\n",
-		usb_status, usbd_status, pwr_reg, ep0csr);
-
-	/*
-	 * Now, handle interrupts. There's two types :
-	 * - Reset, Resume, Suspend coming -> usb_int_reg
-	 * - EP -> ep_int_reg
-	 */
-
-	/* RESET */
-	if (usb_status & S3C2410_UDC_USBINT_RESET) {
-		/* two kind of reset :
-		 * - reset start -> pwr reg = 8
-		 * - reset end   -> pwr reg = 0
-		 **/
-		dprintk(DEBUG_NORMAL, "USB reset csr %x pwr %x\n",
-			ep0csr, pwr_reg);
-
-		dev->gadget.speed = USB_SPEED_UNKNOWN;
-		udc_write(0x00, S3C2410_UDC_INDEX_REG);
-		udc_write((dev->ep[0].ep.maxpacket & 0x7ff) >> 3,
-				S3C2410_UDC_MAXP_REG);
-		dev->address = 0;
-
-		dev->ep0state = EP0_IDLE;
-		dev->gadget.speed = USB_SPEED_FULL;
-
-		/* clear interrupt */
-		udc_write(S3C2410_UDC_USBINT_RESET,
-				S3C2410_UDC_USB_INT_REG);
-
-		udc_write(idx, S3C2410_UDC_INDEX_REG);
-		spin_unlock_irqrestore(&dev->lock, flags);
-		return IRQ_HANDLED;
-	}
-
-	/* RESUME */
-	if (usb_status & S3C2410_UDC_USBINT_RESUME) {
-		dprintk(DEBUG_NORMAL, "USB resume\n");
-
-		/* clear interrupt */
-		udc_write(S3C2410_UDC_USBINT_RESUME,
-				S3C2410_UDC_USB_INT_REG);
-
-		if (dev->gadget.speed != USB_SPEED_UNKNOWN
-				&& dev->driver
-				&& dev->driver->resume)
-			dev->driver->resume(&dev->gadget);
-	}
-
-	/* SUSPEND */
-	if (usb_status & S3C2410_UDC_USBINT_SUSPEND) {
-		dprintk(DEBUG_NORMAL, "USB suspend\n");
-
-		/* clear interrupt */
-		udc_write(S3C2410_UDC_USBINT_SUSPEND,
-				S3C2410_UDC_USB_INT_REG);
-
-		if (dev->gadget.speed != USB_SPEED_UNKNOWN
-				&& dev->driver
-				&& dev->driver->suspend)
-			dev->driver->suspend(&dev->gadget);
-
-		dev->ep0state = EP0_IDLE;
-	}
-
-	/* EP */
-	/* control traffic */
-	/* check on ep0csr != 0 is not a good idea as clearing in_pkt_ready
-	 * generate an interrupt
-	 */
-	if (usbd_status & S3C2410_UDC_INT_EP0) {
-		dprintk(DEBUG_VERBOSE, "USB ep0 irq\n");
-		/* Clear the interrupt bit by setting it to 1 */
-		udc_write(S3C2410_UDC_INT_EP0, S3C2410_UDC_EP_INT_REG);
-		s3c2410_udc_handle_ep0(dev);
-	}
-
-	/* endpoint data transfers */
-	for (i = 1; i < S3C2410_ENDPOINTS; i++) {
-		u32 tmp = 1 << i;
-		if (usbd_status & tmp) {
-			dprintk(DEBUG_VERBOSE, "USB ep%d irq\n", i);
-
-			/* Clear the interrupt bit by setting it to 1 */
-			udc_write(tmp, S3C2410_UDC_EP_INT_REG);
-			s3c2410_udc_handle_ep(&dev->ep[i]);
-		}
-	}
-
-	/* what else causes this interrupt? a receive! who is it? */
-	if (!usb_status && !usbd_status && !pwr_reg && !ep0csr) {
-		for (i = 1; i < S3C2410_ENDPOINTS; i++) {
-			idx2 = udc_read(S3C2410_UDC_INDEX_REG);
-			udc_write(i, S3C2410_UDC_INDEX_REG);
-
-			if (udc_read(S3C2410_UDC_OUT_CSR1_REG) & 0x1)
-				s3c2410_udc_handle_ep(&dev->ep[i]);
-
-			/* restore index */
-			udc_write(idx2, S3C2410_UDC_INDEX_REG);
-		}
-	}
-
-	dprintk(DEBUG_VERBOSE, "irq: %d s3c2410_udc_done.\n", irq_usbd);
-
-	/* Restore old index */
-	udc_write(idx, S3C2410_UDC_INDEX_REG);
-
-	spin_unlock_irqrestore(&dev->lock, flags);
-
-	return IRQ_HANDLED;
-}
-/*------------------------- s3c2410_ep_ops ----------------------------------*/
-
-static inline struct s3c2410_ep *to_s3c2410_ep(struct usb_ep *ep)
-{
-	return container_of(ep, struct s3c2410_ep, ep);
-}
-
-static inline struct s3c2410_udc *to_s3c2410_udc(struct usb_gadget *gadget)
-{
-	return container_of(gadget, struct s3c2410_udc, gadget);
-}
-
-static inline struct s3c2410_request *to_s3c2410_req(struct usb_request *req)
-{
-	return container_of(req, struct s3c2410_request, req);
-}
-
-/*
- *	s3c2410_udc_ep_enable
- */
-static int s3c2410_udc_ep_enable(struct usb_ep *_ep,
-				 const struct usb_endpoint_descriptor *desc)
-{
-	struct s3c2410_udc	*dev;
-	struct s3c2410_ep	*ep;
-	u32			max, tmp;
-	unsigned long		flags;
-	u32			csr1, csr2;
-	u32			int_en_reg;
-
-	ep = to_s3c2410_ep(_ep);
-
-	if (!_ep || !desc
-			|| _ep->name == ep0name
-			|| desc->bDescriptorType != USB_DT_ENDPOINT)
-		return -EINVAL;
-
-	dev = ep->dev;
-	if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
-		return -ESHUTDOWN;
-
-	max = usb_endpoint_maxp(desc);
-
-	local_irq_save(flags);
-	_ep->maxpacket = max;
-	ep->ep.desc = desc;
-	ep->halted = 0;
-	ep->bEndpointAddress = desc->bEndpointAddress;
-
-	/* set max packet */
-	udc_write(ep->num, S3C2410_UDC_INDEX_REG);
-	udc_write(max >> 3, S3C2410_UDC_MAXP_REG);
-
-	/* set type, direction, address; reset fifo counters */
-	if (desc->bEndpointAddress & USB_DIR_IN) {
-		csr1 = S3C2410_UDC_ICSR1_FFLUSH|S3C2410_UDC_ICSR1_CLRDT;
-		csr2 = S3C2410_UDC_ICSR2_MODEIN|S3C2410_UDC_ICSR2_DMAIEN;
-
-		udc_write(ep->num, S3C2410_UDC_INDEX_REG);
-		udc_write(csr1, S3C2410_UDC_IN_CSR1_REG);
-		udc_write(ep->num, S3C2410_UDC_INDEX_REG);
-		udc_write(csr2, S3C2410_UDC_IN_CSR2_REG);
-	} else {
-		/* don't flush in fifo or it will cause endpoint interrupt */
-		csr1 = S3C2410_UDC_ICSR1_CLRDT;
-		csr2 = S3C2410_UDC_ICSR2_DMAIEN;
-
-		udc_write(ep->num, S3C2410_UDC_INDEX_REG);
-		udc_write(csr1, S3C2410_UDC_IN_CSR1_REG);
-		udc_write(ep->num, S3C2410_UDC_INDEX_REG);
-		udc_write(csr2, S3C2410_UDC_IN_CSR2_REG);
-
-		csr1 = S3C2410_UDC_OCSR1_FFLUSH | S3C2410_UDC_OCSR1_CLRDT;
-		csr2 = S3C2410_UDC_OCSR2_DMAIEN;
-
-		udc_write(ep->num, S3C2410_UDC_INDEX_REG);
-		udc_write(csr1, S3C2410_UDC_OUT_CSR1_REG);
-		udc_write(ep->num, S3C2410_UDC_INDEX_REG);
-		udc_write(csr2, S3C2410_UDC_OUT_CSR2_REG);
-	}
-
-	/* enable irqs */
-	int_en_reg = udc_read(S3C2410_UDC_EP_INT_EN_REG);
-	udc_write(int_en_reg | (1 << ep->num), S3C2410_UDC_EP_INT_EN_REG);
-
-	/* print some debug message */
-	tmp = desc->bEndpointAddress;
-	dprintk(DEBUG_NORMAL, "enable %s(%d) ep%x%s-blk max %02x\n",
-		 _ep->name, ep->num, tmp,
-		 desc->bEndpointAddress & USB_DIR_IN ? "in" : "out", max);
-
-	local_irq_restore(flags);
-	s3c2410_udc_set_halt(_ep, 0);
-
-	return 0;
-}
-
-/*
- * s3c2410_udc_ep_disable
- */
-static int s3c2410_udc_ep_disable(struct usb_ep *_ep)
-{
-	struct s3c2410_ep *ep = to_s3c2410_ep(_ep);
-	unsigned long flags;
-	u32 int_en_reg;
-
-	if (!_ep || !ep->ep.desc) {
-		dprintk(DEBUG_NORMAL, "%s not enabled\n",
-			_ep ? ep->ep.name : NULL);
-		return -EINVAL;
-	}
-
-	local_irq_save(flags);
-
-	dprintk(DEBUG_NORMAL, "ep_disable: %s\n", _ep->name);
-
-	ep->ep.desc = NULL;
-	ep->halted = 1;
-
-	s3c2410_udc_nuke(ep->dev, ep, -ESHUTDOWN);
-
-	/* disable irqs */
-	int_en_reg = udc_read(S3C2410_UDC_EP_INT_EN_REG);
-	udc_write(int_en_reg & ~(1<<ep->num), S3C2410_UDC_EP_INT_EN_REG);
-
-	local_irq_restore(flags);
-
-	dprintk(DEBUG_NORMAL, "%s disabled\n", _ep->name);
-
-	return 0;
-}
-
-/*
- * s3c2410_udc_alloc_request
- */
-static struct usb_request *
-s3c2410_udc_alloc_request(struct usb_ep *_ep, gfp_t mem_flags)
-{
-	struct s3c2410_request *req;
-
-	dprintk(DEBUG_VERBOSE, "%s(%p,%d)\n", __func__, _ep, mem_flags);
-
-	if (!_ep)
-		return NULL;
-
-	req = kzalloc(sizeof(struct s3c2410_request), mem_flags);
-	if (!req)
-		return NULL;
-
-	INIT_LIST_HEAD(&req->queue);
-	return &req->req;
-}
-
-/*
- * s3c2410_udc_free_request
- */
-static void
-s3c2410_udc_free_request(struct usb_ep *_ep, struct usb_request *_req)
-{
-	struct s3c2410_ep	*ep = to_s3c2410_ep(_ep);
-	struct s3c2410_request	*req = to_s3c2410_req(_req);
-
-	dprintk(DEBUG_VERBOSE, "%s(%p,%p)\n", __func__, _ep, _req);
-
-	if (!ep || !_req || (!ep->ep.desc && _ep->name != ep0name))
-		return;
-
-	WARN_ON(!list_empty(&req->queue));
-	kfree(req);
-}
-
-/*
- *	s3c2410_udc_queue
- */
-static int s3c2410_udc_queue(struct usb_ep *_ep, struct usb_request *_req,
-		gfp_t gfp_flags)
-{
-	struct s3c2410_request	*req = to_s3c2410_req(_req);
-	struct s3c2410_ep	*ep = to_s3c2410_ep(_ep);
-	struct s3c2410_udc	*dev;
-	u32			ep_csr = 0;
-	int			fifo_count = 0;
-	unsigned long		flags;
-
-	if (unlikely(!_ep || (!ep->ep.desc && ep->ep.name != ep0name))) {
-		dprintk(DEBUG_NORMAL, "%s: invalid args\n", __func__);
-		return -EINVAL;
-	}
-
-	dev = ep->dev;
-	if (unlikely(!dev->driver
-			|| dev->gadget.speed == USB_SPEED_UNKNOWN)) {
-		return -ESHUTDOWN;
-	}
-
-	local_irq_save(flags);
-
-	if (unlikely(!_req || !_req->complete
-			|| !_req->buf || !list_empty(&req->queue))) {
-		if (!_req)
-			dprintk(DEBUG_NORMAL, "%s: 1 X X X\n", __func__);
-		else {
-			dprintk(DEBUG_NORMAL, "%s: 0 %01d %01d %01d\n",
-				__func__, !_req->complete, !_req->buf,
-				!list_empty(&req->queue));
-		}
-
-		local_irq_restore(flags);
-		return -EINVAL;
-	}
-
-	_req->status = -EINPROGRESS;
-	_req->actual = 0;
-
-	dprintk(DEBUG_VERBOSE, "%s: ep%x len %d\n",
-		 __func__, ep->bEndpointAddress, _req->length);
-
-	if (ep->bEndpointAddress) {
-		udc_write(ep->bEndpointAddress & 0x7F, S3C2410_UDC_INDEX_REG);
-
-		ep_csr = udc_read((ep->bEndpointAddress & USB_DIR_IN)
-				? S3C2410_UDC_IN_CSR1_REG
-				: S3C2410_UDC_OUT_CSR1_REG);
-		fifo_count = s3c2410_udc_fifo_count_out();
-	} else {
-		udc_write(0, S3C2410_UDC_INDEX_REG);
-		ep_csr = udc_read(S3C2410_UDC_IN_CSR1_REG);
-		fifo_count = s3c2410_udc_fifo_count_out();
-	}
-
-	/* kickstart this i/o queue? */
-	if (list_empty(&ep->queue) && !ep->halted) {
-		if (ep->bEndpointAddress == 0 /* ep0 */) {
-			switch (dev->ep0state) {
-			case EP0_IN_DATA_PHASE:
-				if (!(ep_csr&S3C2410_UDC_EP0_CSR_IPKRDY)
-						&& s3c2410_udc_write_fifo(ep,
-							req)) {
-					dev->ep0state = EP0_IDLE;
-					req = NULL;
-				}
-				break;
-
-			case EP0_OUT_DATA_PHASE:
-				if ((!_req->length)
-					|| ((ep_csr & S3C2410_UDC_OCSR1_PKTRDY)
-						&& s3c2410_udc_read_fifo(ep,
-							req))) {
-					dev->ep0state = EP0_IDLE;
-					req = NULL;
-				}
-				break;
-
-			default:
-				local_irq_restore(flags);
-				return -EL2HLT;
-			}
-		} else if ((ep->bEndpointAddress & USB_DIR_IN) != 0
-				&& (!(ep_csr&S3C2410_UDC_OCSR1_PKTRDY))
-				&& s3c2410_udc_write_fifo(ep, req)) {
-			req = NULL;
-		} else if ((ep_csr & S3C2410_UDC_OCSR1_PKTRDY)
-				&& fifo_count
-				&& s3c2410_udc_read_fifo(ep, req)) {
-			req = NULL;
-		}
-	}
-
-	/* pio or dma irq handler advances the queue. */
-	if (likely(req))
-		list_add_tail(&req->queue, &ep->queue);
-
-	local_irq_restore(flags);
-
-	dprintk(DEBUG_VERBOSE, "%s ok\n", __func__);
-	return 0;
-}
-
-/*
- *	s3c2410_udc_dequeue
- */
-static int s3c2410_udc_dequeue(struct usb_ep *_ep, struct usb_request *_req)
-{
-	struct s3c2410_ep	*ep = to_s3c2410_ep(_ep);
-	int			retval = -EINVAL;
-	unsigned long		flags;
-	struct s3c2410_request	*req = NULL, *iter;
-
-	dprintk(DEBUG_VERBOSE, "%s(%p,%p)\n", __func__, _ep, _req);
-
-	if (!the_controller->driver)
-		return -ESHUTDOWN;
-
-	if (!_ep || !_req)
-		return retval;
-
-	local_irq_save(flags);
-
-	list_for_each_entry(iter, &ep->queue, queue) {
-		if (&iter->req != _req)
-			continue;
-		list_del_init(&iter->queue);
-		_req->status = -ECONNRESET;
-		req = iter;
-		retval = 0;
-		break;
-	}
-
-	if (retval == 0) {
-		dprintk(DEBUG_VERBOSE,
-			"dequeued req %p from %s, len %d buf %p\n",
-			req, _ep->name, _req->length, _req->buf);
-
-		s3c2410_udc_done(ep, req, -ECONNRESET);
-	}
-
-	local_irq_restore(flags);
-	return retval;
-}
-
-/*
- * s3c2410_udc_set_halt
- */
-static int s3c2410_udc_set_halt(struct usb_ep *_ep, int value)
-{
-	struct s3c2410_ep	*ep = to_s3c2410_ep(_ep);
-	u32			ep_csr = 0;
-	unsigned long		flags;
-	u32			idx;
-
-	if (unlikely(!_ep || (!ep->ep.desc && ep->ep.name != ep0name))) {
-		dprintk(DEBUG_NORMAL, "%s: inval 2\n", __func__);
-		return -EINVAL;
-	}
-
-	local_irq_save(flags);
-
-	idx = ep->bEndpointAddress & 0x7F;
-
-	if (idx == 0) {
-		s3c2410_udc_set_ep0_ss(base_addr);
-		s3c2410_udc_set_ep0_de_out(base_addr);
-	} else {
-		udc_write(idx, S3C2410_UDC_INDEX_REG);
-		ep_csr = udc_read((ep->bEndpointAddress & USB_DIR_IN)
-				? S3C2410_UDC_IN_CSR1_REG
-				: S3C2410_UDC_OUT_CSR1_REG);
-
-		if ((ep->bEndpointAddress & USB_DIR_IN) != 0) {
-			if (value)
-				udc_write(ep_csr | S3C2410_UDC_ICSR1_SENDSTL,
-					S3C2410_UDC_IN_CSR1_REG);
-			else {
-				ep_csr &= ~S3C2410_UDC_ICSR1_SENDSTL;
-				udc_write(ep_csr, S3C2410_UDC_IN_CSR1_REG);
-				ep_csr |= S3C2410_UDC_ICSR1_CLRDT;
-				udc_write(ep_csr, S3C2410_UDC_IN_CSR1_REG);
-			}
-		} else {
-			if (value)
-				udc_write(ep_csr | S3C2410_UDC_OCSR1_SENDSTL,
-					S3C2410_UDC_OUT_CSR1_REG);
-			else {
-				ep_csr &= ~S3C2410_UDC_OCSR1_SENDSTL;
-				udc_write(ep_csr, S3C2410_UDC_OUT_CSR1_REG);
-				ep_csr |= S3C2410_UDC_OCSR1_CLRDT;
-				udc_write(ep_csr, S3C2410_UDC_OUT_CSR1_REG);
-			}
-		}
-	}
-
-	ep->halted = value ? 1 : 0;
-	local_irq_restore(flags);
-
-	return 0;
-}
-
-static const struct usb_ep_ops s3c2410_ep_ops = {
-	.enable		= s3c2410_udc_ep_enable,
-	.disable	= s3c2410_udc_ep_disable,
-
-	.alloc_request	= s3c2410_udc_alloc_request,
-	.free_request	= s3c2410_udc_free_request,
-
-	.queue		= s3c2410_udc_queue,
-	.dequeue	= s3c2410_udc_dequeue,
-
-	.set_halt	= s3c2410_udc_set_halt,
-};
-
-/*------------------------- usb_gadget_ops ----------------------------------*/
-
-/*
- *	s3c2410_udc_get_frame
- */
-static int s3c2410_udc_get_frame(struct usb_gadget *_gadget)
-{
-	int tmp;
-
-	dprintk(DEBUG_VERBOSE, "%s()\n", __func__);
-
-	tmp = udc_read(S3C2410_UDC_FRAME_NUM2_REG) << 8;
-	tmp |= udc_read(S3C2410_UDC_FRAME_NUM1_REG);
-	return tmp;
-}
-
-/*
- *	s3c2410_udc_wakeup
- */
-static int s3c2410_udc_wakeup(struct usb_gadget *_gadget)
-{
-	dprintk(DEBUG_NORMAL, "%s()\n", __func__);
-	return 0;
-}
-
-/*
- *	s3c2410_udc_set_selfpowered
- */
-static int s3c2410_udc_set_selfpowered(struct usb_gadget *gadget, int value)
-{
-	struct s3c2410_udc *udc = to_s3c2410_udc(gadget);
-
-	dprintk(DEBUG_NORMAL, "%s()\n", __func__);
-
-	gadget->is_selfpowered = (value != 0);
-	if (value)
-		udc->devstatus |= (1 << USB_DEVICE_SELF_POWERED);
-	else
-		udc->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED);
-
-	return 0;
-}
-
-static void s3c2410_udc_disable(struct s3c2410_udc *dev);
-static void s3c2410_udc_enable(struct s3c2410_udc *dev);
-
-static int s3c2410_udc_set_pullup(struct s3c2410_udc *udc, int is_on)
-{
-	dprintk(DEBUG_NORMAL, "%s()\n", __func__);
-
-	if (udc_info && (udc_info->udc_command || udc->pullup_gpiod)) {
-
-		if (is_on)
-			s3c2410_udc_enable(udc);
-		else {
-			if (udc->gadget.speed != USB_SPEED_UNKNOWN) {
-				if (udc->driver && udc->driver->disconnect)
-					udc->driver->disconnect(&udc->gadget);
-
-			}
-			s3c2410_udc_disable(udc);
-		}
-	} else {
-		return -EOPNOTSUPP;
-	}
-
-	return 0;
-}
-
-static int s3c2410_udc_vbus_session(struct usb_gadget *gadget, int is_active)
-{
-	struct s3c2410_udc *udc = to_s3c2410_udc(gadget);
-
-	dprintk(DEBUG_NORMAL, "%s()\n", __func__);
-
-	udc->vbus = (is_active != 0);
-	s3c2410_udc_set_pullup(udc, is_active);
-	return 0;
-}
-
-static int s3c2410_udc_pullup(struct usb_gadget *gadget, int is_on)
-{
-	struct s3c2410_udc *udc = to_s3c2410_udc(gadget);
-
-	dprintk(DEBUG_NORMAL, "%s()\n", __func__);
-
-	s3c2410_udc_set_pullup(udc, is_on);
-	return 0;
-}
-
-static irqreturn_t s3c2410_udc_vbus_irq(int irq, void *_dev)
-{
-	struct s3c2410_udc	*dev = _dev;
-	unsigned int		value;
-
-	dprintk(DEBUG_NORMAL, "%s()\n", __func__);
-
-	value = gpiod_get_value(dev->vbus_gpiod);
-
-	if (value != dev->vbus)
-		s3c2410_udc_vbus_session(&dev->gadget, value);
-
-	return IRQ_HANDLED;
-}
-
-static int s3c2410_vbus_draw(struct usb_gadget *_gadget, unsigned ma)
-{
-	dprintk(DEBUG_NORMAL, "%s()\n", __func__);
-
-	if (udc_info && udc_info->vbus_draw) {
-		udc_info->vbus_draw(ma);
-		return 0;
-	}
-
-	return -ENOTSUPP;
-}
-
-static int s3c2410_udc_start(struct usb_gadget *g,
-		struct usb_gadget_driver *driver);
-static int s3c2410_udc_stop(struct usb_gadget *g);
-
-static const struct usb_gadget_ops s3c2410_ops = {
-	.get_frame		= s3c2410_udc_get_frame,
-	.wakeup			= s3c2410_udc_wakeup,
-	.set_selfpowered	= s3c2410_udc_set_selfpowered,
-	.pullup			= s3c2410_udc_pullup,
-	.vbus_session		= s3c2410_udc_vbus_session,
-	.vbus_draw		= s3c2410_vbus_draw,
-	.udc_start		= s3c2410_udc_start,
-	.udc_stop		= s3c2410_udc_stop,
-};
-
-static void s3c2410_udc_command(struct s3c2410_udc *udc,
-				enum s3c2410_udc_cmd_e cmd)
-{
-	if (!udc_info)
-		return;
-
-	if (udc_info->udc_command) {
-		udc_info->udc_command(cmd);
-	} else if (udc->pullup_gpiod) {
-		int value;
-
-		switch (cmd) {
-		case S3C2410_UDC_P_ENABLE:
-			value = 1;
-			break;
-		case S3C2410_UDC_P_DISABLE:
-			value = 0;
-			break;
-		default:
-			return;
-		}
-
-		gpiod_set_value(udc->pullup_gpiod, value);
-	}
-}
-
-/*------------------------- gadget driver handling---------------------------*/
-/*
- * s3c2410_udc_disable
- */
-static void s3c2410_udc_disable(struct s3c2410_udc *dev)
-{
-	dprintk(DEBUG_NORMAL, "%s()\n", __func__);
-
-	/* Disable all interrupts */
-	udc_write(0x00, S3C2410_UDC_USB_INT_EN_REG);
-	udc_write(0x00, S3C2410_UDC_EP_INT_EN_REG);
-
-	/* Clear the interrupt registers */
-	udc_write(S3C2410_UDC_USBINT_RESET
-				| S3C2410_UDC_USBINT_RESUME
-				| S3C2410_UDC_USBINT_SUSPEND,
-			S3C2410_UDC_USB_INT_REG);
-
-	udc_write(0x1F, S3C2410_UDC_EP_INT_REG);
-
-	/* Good bye, cruel world */
-	s3c2410_udc_command(dev, S3C2410_UDC_P_DISABLE);
-
-	/* Set speed to unknown */
-	dev->gadget.speed = USB_SPEED_UNKNOWN;
-}
-
-/*
- * s3c2410_udc_reinit
- */
-static void s3c2410_udc_reinit(struct s3c2410_udc *dev)
-{
-	u32 i;
-
-	/* device/ep0 records init */
-	INIT_LIST_HEAD(&dev->gadget.ep_list);
-	INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
-	dev->ep0state = EP0_IDLE;
-
-	for (i = 0; i < S3C2410_ENDPOINTS; i++) {
-		struct s3c2410_ep *ep = &dev->ep[i];
-
-		if (i != 0)
-			list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
-
-		ep->dev = dev;
-		ep->ep.desc = NULL;
-		ep->halted = 0;
-		INIT_LIST_HEAD(&ep->queue);
-		usb_ep_set_maxpacket_limit(&ep->ep, ep->ep.maxpacket);
-	}
-}
-
-/*
- * s3c2410_udc_enable
- */
-static void s3c2410_udc_enable(struct s3c2410_udc *dev)
-{
-	int i;
-
-	dprintk(DEBUG_NORMAL, "s3c2410_udc_enable called\n");
-
-	/* dev->gadget.speed = USB_SPEED_UNKNOWN; */
-	dev->gadget.speed = USB_SPEED_FULL;
-
-	/* Set MAXP for all endpoints */
-	for (i = 0; i < S3C2410_ENDPOINTS; i++) {
-		udc_write(i, S3C2410_UDC_INDEX_REG);
-		udc_write((dev->ep[i].ep.maxpacket & 0x7ff) >> 3,
-				S3C2410_UDC_MAXP_REG);
-	}
-
-	/* Set default power state */
-	udc_write(DEFAULT_POWER_STATE, S3C2410_UDC_PWR_REG);
-
-	/* Enable reset and suspend interrupt interrupts */
-	udc_write(S3C2410_UDC_USBINT_RESET | S3C2410_UDC_USBINT_SUSPEND,
-			S3C2410_UDC_USB_INT_EN_REG);
-
-	/* Enable ep0 interrupt */
-	udc_write(S3C2410_UDC_INT_EP0, S3C2410_UDC_EP_INT_EN_REG);
-
-	/* time to say "hello, world" */
-	s3c2410_udc_command(dev, S3C2410_UDC_P_ENABLE);
-}
-
-static int s3c2410_udc_start(struct usb_gadget *g,
-		struct usb_gadget_driver *driver)
-{
-	struct s3c2410_udc *udc = to_s3c2410(g);
-
-	dprintk(DEBUG_NORMAL, "%s() '%s'\n", __func__, driver->driver.name);
-
-	/* Hook the driver */
-	udc->driver = driver;
-
-	/* Enable udc */
-	s3c2410_udc_enable(udc);
-
-	return 0;
-}
-
-static int s3c2410_udc_stop(struct usb_gadget *g)
-{
-	struct s3c2410_udc *udc = to_s3c2410(g);
-
-	udc->driver = NULL;
-
-	/* Disable udc */
-	s3c2410_udc_disable(udc);
-
-	return 0;
-}
-
-/*---------------------------------------------------------------------------*/
-static struct s3c2410_udc memory = {
-	.gadget = {
-		.ops		= &s3c2410_ops,
-		.ep0		= &memory.ep[0].ep,
-		.name		= gadget_name,
-		.dev = {
-			.init_name	= "gadget",
-		},
-	},
-
-	/* control endpoint */
-	.ep[0] = {
-		.num		= 0,
-		.ep = {
-			.name		= ep0name,
-			.ops		= &s3c2410_ep_ops,
-			.maxpacket	= EP0_FIFO_SIZE,
-			.caps		= USB_EP_CAPS(USB_EP_CAPS_TYPE_CONTROL,
-						USB_EP_CAPS_DIR_ALL),
-		},
-		.dev		= &memory,
-	},
-
-	/* first group of endpoints */
-	.ep[1] = {
-		.num		= 1,
-		.ep = {
-			.name		= "ep1-bulk",
-			.ops		= &s3c2410_ep_ops,
-			.maxpacket	= EP_FIFO_SIZE,
-			.caps		= USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK,
-						USB_EP_CAPS_DIR_ALL),
-		},
-		.dev		= &memory,
-		.fifo_size	= EP_FIFO_SIZE,
-		.bEndpointAddress = 1,
-		.bmAttributes	= USB_ENDPOINT_XFER_BULK,
-	},
-	.ep[2] = {
-		.num		= 2,
-		.ep = {
-			.name		= "ep2-bulk",
-			.ops		= &s3c2410_ep_ops,
-			.maxpacket	= EP_FIFO_SIZE,
-			.caps		= USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK,
-						USB_EP_CAPS_DIR_ALL),
-		},
-		.dev		= &memory,
-		.fifo_size	= EP_FIFO_SIZE,
-		.bEndpointAddress = 2,
-		.bmAttributes	= USB_ENDPOINT_XFER_BULK,
-	},
-	.ep[3] = {
-		.num		= 3,
-		.ep = {
-			.name		= "ep3-bulk",
-			.ops		= &s3c2410_ep_ops,
-			.maxpacket	= EP_FIFO_SIZE,
-			.caps		= USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK,
-						USB_EP_CAPS_DIR_ALL),
-		},
-		.dev		= &memory,
-		.fifo_size	= EP_FIFO_SIZE,
-		.bEndpointAddress = 3,
-		.bmAttributes	= USB_ENDPOINT_XFER_BULK,
-	},
-	.ep[4] = {
-		.num		= 4,
-		.ep = {
-			.name		= "ep4-bulk",
-			.ops		= &s3c2410_ep_ops,
-			.maxpacket	= EP_FIFO_SIZE,
-			.caps		= USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK,
-						USB_EP_CAPS_DIR_ALL),
-		},
-		.dev		= &memory,
-		.fifo_size	= EP_FIFO_SIZE,
-		.bEndpointAddress = 4,
-		.bmAttributes	= USB_ENDPOINT_XFER_BULK,
-	}
-
-};
-
-/*
- *	probe - binds to the platform device
- */
-static int s3c2410_udc_probe(struct platform_device *pdev)
-{
-	struct s3c2410_udc *udc = &memory;
-	struct device *dev = &pdev->dev;
-	int retval;
-	int irq;
-
-	dev_dbg(dev, "%s()\n", __func__);
-
-	usb_bus_clock = clk_get(NULL, "usb-bus-gadget");
-	if (IS_ERR(usb_bus_clock)) {
-		dev_err(dev, "failed to get usb bus clock source\n");
-		return PTR_ERR(usb_bus_clock);
-	}
-
-	clk_prepare_enable(usb_bus_clock);
-
-	udc_clock = clk_get(NULL, "usb-device");
-	if (IS_ERR(udc_clock)) {
-		dev_err(dev, "failed to get udc clock source\n");
-		retval = PTR_ERR(udc_clock);
-		goto err_usb_bus_clk;
-	}
-
-	clk_prepare_enable(udc_clock);
-
-	mdelay(10);
-
-	dev_dbg(dev, "got and enabled clocks\n");
-
-	if (strncmp(pdev->name, "s3c2440", 7) == 0) {
-		dev_info(dev, "S3C2440: increasing FIFO to 128 bytes\n");
-		memory.ep[1].fifo_size = S3C2440_EP_FIFO_SIZE;
-		memory.ep[2].fifo_size = S3C2440_EP_FIFO_SIZE;
-		memory.ep[3].fifo_size = S3C2440_EP_FIFO_SIZE;
-		memory.ep[4].fifo_size = S3C2440_EP_FIFO_SIZE;
-	}
-
-	spin_lock_init(&udc->lock);
-	udc_info = dev_get_platdata(&pdev->dev);
-
-	base_addr = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base_addr)) {
-		retval = PTR_ERR(base_addr);
-		goto err_udc_clk;
-	}
-
-	the_controller = udc;
-	platform_set_drvdata(pdev, udc);
-
-	s3c2410_udc_disable(udc);
-	s3c2410_udc_reinit(udc);
-
-	irq_usbd = platform_get_irq(pdev, 0);
-	if (irq_usbd < 0) {
-		retval = irq_usbd;
-		goto err_udc_clk;
-	}
-
-	/* irq setup after old hardware state is cleaned up */
-	retval = request_irq(irq_usbd, s3c2410_udc_irq,
-			     0, gadget_name, udc);
-
-	if (retval != 0) {
-		dev_err(dev, "cannot get irq %i, err %d\n", irq_usbd, retval);
-		retval = -EBUSY;
-		goto err_udc_clk;
-	}
-
-	dev_dbg(dev, "got irq %i\n", irq_usbd);
-
-	udc->vbus_gpiod = gpiod_get_optional(dev, "vbus", GPIOD_IN);
-	if (IS_ERR(udc->vbus_gpiod)) {
-		retval = PTR_ERR(udc->vbus_gpiod);
-		goto err_int;
-	}
-	if (udc->vbus_gpiod) {
-		gpiod_set_consumer_name(udc->vbus_gpiod, "udc vbus");
-
-		irq = gpiod_to_irq(udc->vbus_gpiod);
-		if (irq < 0) {
-			dev_err(dev, "no irq for gpio vbus pin\n");
-			retval = irq;
-			goto err_gpio_claim;
-		}
-
-		retval = request_irq(irq, s3c2410_udc_vbus_irq,
-				     IRQF_TRIGGER_RISING
-				     | IRQF_TRIGGER_FALLING | IRQF_SHARED,
-				     gadget_name, udc);
-
-		if (retval != 0) {
-			dev_err(dev, "can't get vbus irq %d, err %d\n",
-				irq, retval);
-			retval = -EBUSY;
-			goto err_gpio_claim;
-		}
-
-		dev_dbg(dev, "got irq %i\n", irq);
-	} else {
-		udc->vbus = 1;
-	}
-
-	udc->pullup_gpiod = gpiod_get_optional(dev, "pullup", GPIOD_OUT_LOW);
-	if (IS_ERR(udc->pullup_gpiod)) {
-		retval = PTR_ERR(udc->pullup_gpiod);
-		goto err_vbus_irq;
-	}
-	gpiod_set_consumer_name(udc->pullup_gpiod, "udc pullup");
-
-	retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
-	if (retval)
-		goto err_add_udc;
-
-	debugfs_create_file("registers", S_IRUGO, s3c2410_udc_debugfs_root, udc,
-			    &s3c2410_udc_debugfs_fops);
-
-	dev_dbg(dev, "probe ok\n");
-
-	return 0;
-
-err_add_udc:
-err_vbus_irq:
-	if (udc->vbus_gpiod)
-		free_irq(gpiod_to_irq(udc->vbus_gpiod), udc);
-err_gpio_claim:
-err_int:
-	free_irq(irq_usbd, udc);
-err_udc_clk:
-	clk_disable_unprepare(udc_clock);
-	clk_put(udc_clock);
-	udc_clock = NULL;
-err_usb_bus_clk:
-	clk_disable_unprepare(usb_bus_clock);
-	clk_put(usb_bus_clock);
-	usb_bus_clock = NULL;
-
-	return retval;
-}
-
-/*
- *	s3c2410_udc_remove
- */
-static int s3c2410_udc_remove(struct platform_device *pdev)
-{
-	struct s3c2410_udc *udc = platform_get_drvdata(pdev);
-
-	dev_dbg(&pdev->dev, "%s()\n", __func__);
-
-	if (udc->driver)
-		return -EBUSY;
-
-	usb_del_gadget_udc(&udc->gadget);
-	debugfs_remove(debugfs_lookup("registers", s3c2410_udc_debugfs_root));
-
-	if (udc->vbus_gpiod)
-		free_irq(gpiod_to_irq(udc->vbus_gpiod), udc);
-
-	free_irq(irq_usbd, udc);
-
-	if (!IS_ERR(udc_clock) && udc_clock != NULL) {
-		clk_disable_unprepare(udc_clock);
-		clk_put(udc_clock);
-		udc_clock = NULL;
-	}
-
-	if (!IS_ERR(usb_bus_clock) && usb_bus_clock != NULL) {
-		clk_disable_unprepare(usb_bus_clock);
-		clk_put(usb_bus_clock);
-		usb_bus_clock = NULL;
-	}
-
-	dev_dbg(&pdev->dev, "%s: remove ok\n", __func__);
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int
-s3c2410_udc_suspend(struct platform_device *pdev, pm_message_t message)
-{
-	struct s3c2410_udc *udc = platform_get_drvdata(pdev);
-
-	s3c2410_udc_command(udc, S3C2410_UDC_P_DISABLE);
-
-	return 0;
-}
-
-static int s3c2410_udc_resume(struct platform_device *pdev)
-{
-	struct s3c2410_udc *udc = platform_get_drvdata(pdev);
-
-	s3c2410_udc_command(udc, S3C2410_UDC_P_ENABLE);
-
-	return 0;
-}
-#else
-#define s3c2410_udc_suspend	NULL
-#define s3c2410_udc_resume	NULL
-#endif
-
-static const struct platform_device_id s3c_udc_ids[] = {
-	{ "s3c2410-usbgadget", },
-	{ "s3c2440-usbgadget", },
-	{ }
-};
-MODULE_DEVICE_TABLE(platform, s3c_udc_ids);
-
-static struct platform_driver udc_driver_24x0 = {
-	.driver		= {
-		.name	= "s3c24x0-usbgadget",
-	},
-	.probe		= s3c2410_udc_probe,
-	.remove		= s3c2410_udc_remove,
-	.suspend	= s3c2410_udc_suspend,
-	.resume		= s3c2410_udc_resume,
-	.id_table	= s3c_udc_ids,
-};
-
-static int __init udc_init(void)
-{
-	int retval;
-
-	dprintk(DEBUG_NORMAL, "%s\n", gadget_name);
-
-	s3c2410_udc_debugfs_root = debugfs_create_dir(gadget_name,
-						      usb_debug_root);
-
-	retval = platform_driver_register(&udc_driver_24x0);
-	if (retval)
-		goto err;
-
-	return 0;
-
-err:
-	debugfs_remove(s3c2410_udc_debugfs_root);
-	return retval;
-}
-
-static void __exit udc_exit(void)
-{
-	platform_driver_unregister(&udc_driver_24x0);
-	debugfs_remove_recursive(s3c2410_udc_debugfs_root);
-}
-
-module_init(udc_init);
-module_exit(udc_exit);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/udc/s3c2410_udc.h b/drivers/usb/gadget/udc/s3c2410_udc.h
deleted file mode 100644
index cdbf202e5ee8..000000000000
--- a/drivers/usb/gadget/udc/s3c2410_udc.h
+++ /dev/null
@@ -1,99 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * linux/drivers/usb/gadget/s3c2410_udc.h
- * Samsung on-chip full speed USB device controllers
- *
- * Copyright (C) 2004-2007 Herbert Pötzl - Arnaud Patard
- *	Additional cleanups by Ben Dooks <ben-linux@fluff.org>
- */
-
-#ifndef _S3C2410_UDC_H
-#define _S3C2410_UDC_H
-
-struct s3c2410_ep {
-	struct list_head		queue;
-	unsigned long			last_io;	/* jiffies timestamp */
-	struct usb_gadget		*gadget;
-	struct s3c2410_udc		*dev;
-	struct usb_ep			ep;
-	u8				num;
-
-	unsigned short			fifo_size;
-	u8				bEndpointAddress;
-	u8				bmAttributes;
-
-	unsigned			halted : 1;
-	unsigned			already_seen : 1;
-	unsigned			setup_stage : 1;
-};
-
-
-/* Warning : ep0 has a fifo of 16 bytes */
-/* Don't try to set 32 or 64            */
-/* also testusb 14 fails  wit 16 but is */
-/* fine with 8                          */
-#define EP0_FIFO_SIZE		 8
-#define EP_FIFO_SIZE		64
-#define DEFAULT_POWER_STATE	0x00
-
-#define S3C2440_EP_FIFO_SIZE	128
-
-static const char ep0name [] = "ep0";
-
-static const char *const ep_name[] = {
-	ep0name,                                /* everyone has ep0 */
-	/* s3c2410 four bidirectional bulk endpoints */
-	"ep1-bulk", "ep2-bulk", "ep3-bulk", "ep4-bulk",
-};
-
-#define S3C2410_ENDPOINTS       ARRAY_SIZE(ep_name)
-
-struct s3c2410_request {
-	struct list_head		queue;		/* ep's requests */
-	struct usb_request		req;
-};
-
-enum ep0_state {
-        EP0_IDLE,
-        EP0_IN_DATA_PHASE,
-        EP0_OUT_DATA_PHASE,
-        EP0_END_XFER,
-        EP0_STALL,
-};
-
-static const char *ep0states[]= {
-        "EP0_IDLE",
-        "EP0_IN_DATA_PHASE",
-        "EP0_OUT_DATA_PHASE",
-        "EP0_END_XFER",
-        "EP0_STALL",
-};
-
-struct s3c2410_udc {
-	spinlock_t			lock;
-
-	struct s3c2410_ep		ep[S3C2410_ENDPOINTS];
-	int				address;
-	struct usb_gadget		gadget;
-	struct usb_gadget_driver	*driver;
-	struct s3c2410_request		fifo_req;
-	u8				fifo_buf[EP_FIFO_SIZE];
-	u16				devstatus;
-
-	u32				port_status;
-	int				ep0state;
-
-	struct gpio_desc		*vbus_gpiod;
-	struct gpio_desc		*pullup_gpiod;
-
-	unsigned			got_irq : 1;
-
-	unsigned			req_std : 1;
-	unsigned			req_config : 1;
-	unsigned			req_pending : 1;
-	u8				vbus;
-	int				irq;
-};
-#define to_s3c2410(g)	(container_of((g), struct s3c2410_udc, gadget))
-
-#endif
diff --git a/drivers/usb/gadget/udc/s3c2410_udc_regs.h b/drivers/usb/gadget/udc/s3c2410_udc_regs.h
deleted file mode 100644
index d8d2eeaca088..000000000000
--- a/drivers/usb/gadget/udc/s3c2410_udc_regs.h
+++ /dev/null
@@ -1,146 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Copyright (C) 2004 Herbert Poetzl <herbert@13thfloor.at>
- */
-
-#ifndef __ASM_ARCH_REGS_UDC_H
-#define __ASM_ARCH_REGS_UDC_H
-
-#define S3C2410_USBDREG(x) (x)
-
-#define S3C2410_UDC_FUNC_ADDR_REG	S3C2410_USBDREG(0x0140)
-#define S3C2410_UDC_PWR_REG		S3C2410_USBDREG(0x0144)
-#define S3C2410_UDC_EP_INT_REG		S3C2410_USBDREG(0x0148)
-
-#define S3C2410_UDC_USB_INT_REG		S3C2410_USBDREG(0x0158)
-#define S3C2410_UDC_EP_INT_EN_REG	S3C2410_USBDREG(0x015c)
-
-#define S3C2410_UDC_USB_INT_EN_REG	S3C2410_USBDREG(0x016c)
-
-#define S3C2410_UDC_FRAME_NUM1_REG	S3C2410_USBDREG(0x0170)
-#define S3C2410_UDC_FRAME_NUM2_REG	S3C2410_USBDREG(0x0174)
-
-#define S3C2410_UDC_EP0_FIFO_REG	S3C2410_USBDREG(0x01c0)
-#define S3C2410_UDC_EP1_FIFO_REG	S3C2410_USBDREG(0x01c4)
-#define S3C2410_UDC_EP2_FIFO_REG	S3C2410_USBDREG(0x01c8)
-#define S3C2410_UDC_EP3_FIFO_REG	S3C2410_USBDREG(0x01cc)
-#define S3C2410_UDC_EP4_FIFO_REG	S3C2410_USBDREG(0x01d0)
-
-#define S3C2410_UDC_EP1_DMA_CON		S3C2410_USBDREG(0x0200)
-#define S3C2410_UDC_EP1_DMA_UNIT	S3C2410_USBDREG(0x0204)
-#define S3C2410_UDC_EP1_DMA_FIFO	S3C2410_USBDREG(0x0208)
-#define S3C2410_UDC_EP1_DMA_TTC_L	S3C2410_USBDREG(0x020c)
-#define S3C2410_UDC_EP1_DMA_TTC_M	S3C2410_USBDREG(0x0210)
-#define S3C2410_UDC_EP1_DMA_TTC_H	S3C2410_USBDREG(0x0214)
-
-#define S3C2410_UDC_EP2_DMA_CON		S3C2410_USBDREG(0x0218)
-#define S3C2410_UDC_EP2_DMA_UNIT	S3C2410_USBDREG(0x021c)
-#define S3C2410_UDC_EP2_DMA_FIFO	S3C2410_USBDREG(0x0220)
-#define S3C2410_UDC_EP2_DMA_TTC_L	S3C2410_USBDREG(0x0224)
-#define S3C2410_UDC_EP2_DMA_TTC_M	S3C2410_USBDREG(0x0228)
-#define S3C2410_UDC_EP2_DMA_TTC_H	S3C2410_USBDREG(0x022c)
-
-#define S3C2410_UDC_EP3_DMA_CON		S3C2410_USBDREG(0x0240)
-#define S3C2410_UDC_EP3_DMA_UNIT	S3C2410_USBDREG(0x0244)
-#define S3C2410_UDC_EP3_DMA_FIFO	S3C2410_USBDREG(0x0248)
-#define S3C2410_UDC_EP3_DMA_TTC_L	S3C2410_USBDREG(0x024c)
-#define S3C2410_UDC_EP3_DMA_TTC_M	S3C2410_USBDREG(0x0250)
-#define S3C2410_UDC_EP3_DMA_TTC_H	S3C2410_USBDREG(0x0254)
-
-#define S3C2410_UDC_EP4_DMA_CON		S3C2410_USBDREG(0x0258)
-#define S3C2410_UDC_EP4_DMA_UNIT	S3C2410_USBDREG(0x025c)
-#define S3C2410_UDC_EP4_DMA_FIFO	S3C2410_USBDREG(0x0260)
-#define S3C2410_UDC_EP4_DMA_TTC_L	S3C2410_USBDREG(0x0264)
-#define S3C2410_UDC_EP4_DMA_TTC_M	S3C2410_USBDREG(0x0268)
-#define S3C2410_UDC_EP4_DMA_TTC_H	S3C2410_USBDREG(0x026c)
-
-#define S3C2410_UDC_INDEX_REG		S3C2410_USBDREG(0x0178)
-
-/* indexed registers */
-
-#define S3C2410_UDC_MAXP_REG		S3C2410_USBDREG(0x0180)
-
-#define S3C2410_UDC_EP0_CSR_REG		S3C2410_USBDREG(0x0184)
-
-#define S3C2410_UDC_IN_CSR1_REG		S3C2410_USBDREG(0x0184)
-#define S3C2410_UDC_IN_CSR2_REG		S3C2410_USBDREG(0x0188)
-
-#define S3C2410_UDC_OUT_CSR1_REG	S3C2410_USBDREG(0x0190)
-#define S3C2410_UDC_OUT_CSR2_REG	S3C2410_USBDREG(0x0194)
-#define S3C2410_UDC_OUT_FIFO_CNT1_REG	S3C2410_USBDREG(0x0198)
-#define S3C2410_UDC_OUT_FIFO_CNT2_REG	S3C2410_USBDREG(0x019c)
-
-#define S3C2410_UDC_FUNCADDR_UPDATE	(1 << 7)
-
-#define S3C2410_UDC_PWR_ISOUP		(1 << 7) /* R/W */
-#define S3C2410_UDC_PWR_RESET		(1 << 3) /* R   */
-#define S3C2410_UDC_PWR_RESUME		(1 << 2) /* R/W */
-#define S3C2410_UDC_PWR_SUSPEND		(1 << 1) /* R   */
-#define S3C2410_UDC_PWR_ENSUSPEND	(1 << 0) /* R/W */
-
-#define S3C2410_UDC_PWR_DEFAULT		(0x00)
-
-#define S3C2410_UDC_INT_EP4		(1 << 4) /* R/W (clear only) */
-#define S3C2410_UDC_INT_EP3		(1 << 3) /* R/W (clear only) */
-#define S3C2410_UDC_INT_EP2		(1 << 2) /* R/W (clear only) */
-#define S3C2410_UDC_INT_EP1		(1 << 1) /* R/W (clear only) */
-#define S3C2410_UDC_INT_EP0		(1 << 0) /* R/W (clear only) */
-
-#define S3C2410_UDC_USBINT_RESET	(1 << 2) /* R/W (clear only) */
-#define S3C2410_UDC_USBINT_RESUME	(1 << 1) /* R/W (clear only) */
-#define S3C2410_UDC_USBINT_SUSPEND	(1 << 0) /* R/W (clear only) */
-
-#define S3C2410_UDC_INTE_EP4		(1 << 4) /* R/W */
-#define S3C2410_UDC_INTE_EP3		(1 << 3) /* R/W */
-#define S3C2410_UDC_INTE_EP2		(1 << 2) /* R/W */
-#define S3C2410_UDC_INTE_EP1		(1 << 1) /* R/W */
-#define S3C2410_UDC_INTE_EP0		(1 << 0) /* R/W */
-
-#define S3C2410_UDC_USBINTE_RESET	(1 << 2) /* R/W */
-#define S3C2410_UDC_USBINTE_SUSPEND	(1 << 0) /* R/W */
-
-#define S3C2410_UDC_INDEX_EP0		(0x00)
-#define S3C2410_UDC_INDEX_EP1		(0x01)
-#define S3C2410_UDC_INDEX_EP2		(0x02)
-#define S3C2410_UDC_INDEX_EP3		(0x03)
-#define S3C2410_UDC_INDEX_EP4		(0x04)
-
-#define S3C2410_UDC_ICSR1_CLRDT		(1 << 6) /* R/W */
-#define S3C2410_UDC_ICSR1_SENTSTL	(1 << 5) /* R/W (clear only) */
-#define S3C2410_UDC_ICSR1_SENDSTL	(1 << 4) /* R/W */
-#define S3C2410_UDC_ICSR1_FFLUSH	(1 << 3) /* W   (set only) */
-#define S3C2410_UDC_ICSR1_UNDRUN	(1 << 2) /* R/W (clear only) */
-#define S3C2410_UDC_ICSR1_PKTRDY	(1 << 0) /* R/W (set only) */
-
-#define S3C2410_UDC_ICSR2_AUTOSET	(1 << 7) /* R/W */
-#define S3C2410_UDC_ICSR2_ISO		(1 << 6) /* R/W */
-#define S3C2410_UDC_ICSR2_MODEIN	(1 << 5) /* R/W */
-#define S3C2410_UDC_ICSR2_DMAIEN	(1 << 4) /* R/W */
-
-#define S3C2410_UDC_OCSR1_CLRDT		(1 << 7) /* R/W */
-#define S3C2410_UDC_OCSR1_SENTSTL	(1 << 6) /* R/W (clear only) */
-#define S3C2410_UDC_OCSR1_SENDSTL	(1 << 5) /* R/W */
-#define S3C2410_UDC_OCSR1_FFLUSH	(1 << 4) /* R/W */
-#define S3C2410_UDC_OCSR1_DERROR	(1 << 3) /* R   */
-#define S3C2410_UDC_OCSR1_OVRRUN	(1 << 2) /* R/W (clear only) */
-#define S3C2410_UDC_OCSR1_PKTRDY	(1 << 0) /* R/W (clear only) */
-
-#define S3C2410_UDC_OCSR2_AUTOCLR	(1 << 7) /* R/W */
-#define S3C2410_UDC_OCSR2_ISO		(1 << 6) /* R/W */
-#define S3C2410_UDC_OCSR2_DMAIEN	(1 << 5) /* R/W */
-
-#define S3C2410_UDC_EP0_CSR_OPKRDY	(1 << 0)
-#define S3C2410_UDC_EP0_CSR_IPKRDY	(1 << 1)
-#define S3C2410_UDC_EP0_CSR_SENTSTL	(1 << 2)
-#define S3C2410_UDC_EP0_CSR_DE		(1 << 3)
-#define S3C2410_UDC_EP0_CSR_SE		(1 << 4)
-#define S3C2410_UDC_EP0_CSR_SENDSTL	(1 << 5)
-#define S3C2410_UDC_EP0_CSR_SOPKTRDY	(1 << 6)
-#define S3C2410_UDC_EP0_CSR_SSE		(1 << 7)
-
-#define S3C2410_UDC_MAXP_8		(1 << 0)
-#define S3C2410_UDC_MAXP_16		(1 << 1)
-#define S3C2410_UDC_MAXP_32		(1 << 2)
-#define S3C2410_UDC_MAXP_64		(1 << 3)
-
-#endif