usb: gadget: Gadget directory cleanup - group UDC drivers

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

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

1 files changed, 0 insertions, 2045 deletions

diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
deleted file mode 100644
index 357b58e0087b..000000000000
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ /dev/null
@@ -1,2045 +0,0 @@
-/*
- * 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>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#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.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 <mach/irqs.h>
-
-#include <mach/hardware.h>
-
-#include <plat/regs-udc.h>
-#include <linux/platform_data/usb-s3c2410_udc.h>
-
-
-#include "s3c2410_udc.h"
-
-#define DRIVER_DESC	"S3C2410 USB Device Controller Gadget"
-#define DRIVER_VERSION	"29 Apr 2007"
-#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 u64			rsrc_start;
-static u64			rsrc_len;
-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;
-
-static int dprintk(int level, const char *fmt, ...)
-{
-	static char printk_buf[1024];
-	static long prevticks;
-	static int invocation;
-	va_list args;
-	int len;
-
-	if (level > USB_S3C2410_DEBUG_LEVEL)
-		return 0;
-
-	if (s3c2410_ticks != prevticks) {
-		prevticks = s3c2410_ticks;
-		invocation = 0;
-	}
-
-	len = scnprintf(printk_buf,
-			sizeof(printk_buf), "%1lu.%02d USB: ",
-			prevticks, invocation++);
-
-	va_start(args, fmt);
-	len = vscnprintf(printk_buf+len,
-			sizeof(printk_buf)-len, fmt, args);
-	va_end(args);
-
-	pr_debug("%s", printk_buf);
-	return len;
-}
-#else
-static int dprintk(int level, const char *fmt, ...)
-{
-	return 0;
-}
-#endif
-static int s3c2410_udc_debugfs_seq_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;
-}
-
-static int s3c2410_udc_debugfs_fops_open(struct inode *inode,
-					 struct file *file)
-{
-	return single_open(file, s3c2410_udc_debugfs_seq_show, NULL);
-}
-
-static const struct file_operations s3c2410_udc_debugfs_fops = {
-	.open		= s3c2410_udc_debugfs_fops_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-	.owner		= THIS_MODULE,
-};
-
-/* 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);
-}
-
-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_sse_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_SSE),
-			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;
-	req->req.complete(&ep->ep, &req->req);
-	ep->halted = halted;
-}
-
-static void s3c2410_udc_nuke(struct s3c2410_udc *udc,
-		struct s3c2410_ep *ep, int status)
-{
-	/* Sanity check */
-	if (&ep->queue == NULL)
-		return;
-
-	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 void s3c2410_udc_clear_ep_state(struct s3c2410_udc *dev)
-{
-	unsigned i;
-
-	/* hardware SET_{CONFIGURATION,INTERFACE} automagic resets endpoint
-	 * fifos, and pending transactions mustn't be continued in any case.
-	 */
-
-	for (i = 1; i < S3C2410_ENDPOINTS; i++)
-		s3c2410_udc_nuke(dev, &dev->ep[i], -ECONNABORTED);
-}
-
-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;
-	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;
-	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);
-	}
-}
-
-#include <mach/regs-irq.h>
-
-/*
- *	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) & 0x1fff;
-
-	local_irq_save(flags);
-	_ep->maxpacket = max & 0x7ff;
-	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);
-	struct s3c2410_udc	*udc;
-	int			retval = -EINVAL;
-	unsigned long		flags;
-	struct s3c2410_request	*req = NULL;
-
-	dprintk(DEBUG_VERBOSE, "%s(%p,%p)\n", __func__, _ep, _req);
-
-	if (!the_controller->driver)
-		return -ESHUTDOWN;
-
-	if (!_ep || !_req)
-		return retval;
-
-	udc = to_s3c2410_udc(ep->gadget);
-
-	local_irq_save(flags);
-
-	list_for_each_entry(req, &ep->queue, queue) {
-		if (&req->req == _req) {
-			list_del_init(&req->queue);
-			_req->status = -ECONNRESET;
-			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__);
-
-	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 ||
-		gpio_is_valid(udc_info->pullup_pin))) {
-
-		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 ? 0 : 1);
-	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 = gpio_get_value(udc_info->vbus_pin) ? 1 : 0;
-	if (udc_info->vbus_pin_inverted)
-		value = !value;
-
-	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,
-		struct usb_gadget_driver *driver);
-
-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(enum s3c2410_udc_cmd_e cmd)
-{
-	if (!udc_info)
-		return;
-
-	if (udc_info->udc_command) {
-		udc_info->udc_command(cmd);
-	} else if (gpio_is_valid(udc_info->pullup_pin)) {
-		int value;
-
-		switch (cmd) {
-		case S3C2410_UDC_P_ENABLE:
-			value = 1;
-			break;
-		case S3C2410_UDC_P_DISABLE:
-			value = 0;
-			break;
-		default:
-			return;
-		}
-		value ^= udc_info->pullup_pin_inverted;
-
-		gpio_set_value(udc_info->pullup_pin, 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(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(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 usb_gadget_driver *driver)
-{
-	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,
-		},
-		.dev		= &memory,
-	},
-
-	/* first group of endpoints */
-	.ep[1] = {
-		.num		= 1,
-		.ep = {
-			.name		= "ep1-bulk",
-			.ops		= &s3c2410_ep_ops,
-			.maxpacket	= EP_FIFO_SIZE,
-		},
-		.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,
-		},
-		.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,
-		},
-		.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,
-		},
-		.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");
-		return PTR_ERR(udc_clock);
-	}
-
-	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);
-
-	rsrc_start = S3C2410_PA_USBDEV;
-	rsrc_len   = S3C24XX_SZ_USBDEV;
-
-	if (!request_mem_region(rsrc_start, rsrc_len, gadget_name))
-		return -EBUSY;
-
-	base_addr = ioremap(rsrc_start, rsrc_len);
-	if (!base_addr) {
-		retval = -ENOMEM;
-		goto err_mem;
-	}
-
-	the_controller = udc;
-	platform_set_drvdata(pdev, udc);
-
-	s3c2410_udc_disable(udc);
-	s3c2410_udc_reinit(udc);
-
-	/* 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_map;
-	}
-
-	dev_dbg(dev, "got irq %i\n", IRQ_USBD);
-
-	if (udc_info && udc_info->vbus_pin > 0) {
-		retval = gpio_request(udc_info->vbus_pin, "udc vbus");
-		if (retval < 0) {
-			dev_err(dev, "cannot claim vbus pin\n");
-			goto err_int;
-		}
-
-		irq = gpio_to_irq(udc_info->vbus_pin);
-		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;
-	}
-
-	if (udc_info && !udc_info->udc_command &&
-		gpio_is_valid(udc_info->pullup_pin)) {
-
-		retval = gpio_request_one(udc_info->pullup_pin,
-				udc_info->vbus_pin_inverted ?
-				GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
-				"udc pullup");
-		if (retval)
-			goto err_vbus_irq;
-	}
-
-	retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
-	if (retval)
-		goto err_add_udc;
-
-	if (s3c2410_udc_debugfs_root) {
-		udc->regs_info = debugfs_create_file("registers", S_IRUGO,
-				s3c2410_udc_debugfs_root,
-				udc, &s3c2410_udc_debugfs_fops);
-		if (!udc->regs_info)
-			dev_warn(dev, "debugfs file creation failed\n");
-	}
-
-	dev_dbg(dev, "probe ok\n");
-
-	return 0;
-
-err_add_udc:
-	if (udc_info && !udc_info->udc_command &&
-			gpio_is_valid(udc_info->pullup_pin))
-		gpio_free(udc_info->pullup_pin);
-err_vbus_irq:
-	if (udc_info && udc_info->vbus_pin > 0)
-		free_irq(gpio_to_irq(udc_info->vbus_pin), udc);
-err_gpio_claim:
-	if (udc_info && udc_info->vbus_pin > 0)
-		gpio_free(udc_info->vbus_pin);
-err_int:
-	free_irq(IRQ_USBD, udc);
-err_map:
-	iounmap(base_addr);
-err_mem:
-	release_mem_region(rsrc_start, rsrc_len);
-
-	return retval;
-}
-
-/*
- *	s3c2410_udc_remove
- */
-static int s3c2410_udc_remove(struct platform_device *pdev)
-{
-	struct s3c2410_udc *udc = platform_get_drvdata(pdev);
-	unsigned int irq;
-
-	dev_dbg(&pdev->dev, "%s()\n", __func__);
-
-	if (udc->driver)
-		return -EBUSY;
-
-	usb_del_gadget_udc(&udc->gadget);
-	debugfs_remove(udc->regs_info);
-
-	if (udc_info && !udc_info->udc_command &&
-		gpio_is_valid(udc_info->pullup_pin))
-		gpio_free(udc_info->pullup_pin);
-
-	if (udc_info && udc_info->vbus_pin > 0) {
-		irq = gpio_to_irq(udc_info->vbus_pin);
-		free_irq(irq, udc);
-	}
-
-	free_irq(IRQ_USBD, udc);
-
-	iounmap(base_addr);
-	release_mem_region(rsrc_start, rsrc_len);
-
-	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)
-{
-	s3c2410_udc_command(S3C2410_UDC_P_DISABLE);
-
-	return 0;
-}
-
-static int s3c2410_udc_resume(struct platform_device *pdev)
-{
-	s3c2410_udc_command(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",
-		.owner	= THIS_MODULE,
-	},
-	.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: version %s\n", gadget_name, DRIVER_VERSION);
-
-	s3c2410_udc_debugfs_root = debugfs_create_dir(gadget_name, NULL);
-	if (IS_ERR(s3c2410_udc_debugfs_root)) {
-		pr_err("%s: debugfs dir creation failed %ld\n",
-			gadget_name, PTR_ERR(s3c2410_udc_debugfs_root));
-		s3c2410_udc_debugfs_root = NULL;
-	}
-
-	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(s3c2410_udc_debugfs_root);
-}
-
-module_init(udc_init);
-module_exit(udc_exit);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_VERSION(DRIVER_VERSION);
-MODULE_LICENSE("GPL");