[xburst] Drop 2.6.32 patches

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22485 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 0 insertions, 2539 deletions

diff --git a/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c b/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c
deleted file mode 100644
index 8c58494b91..0000000000
--- a/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.c
+++ /dev/null
@@ -1,2440 +0,0 @@
-/*
- * linux/drivers/usb/gadget/jz4740_udc.c
- *
- * Ingenic JZ4740 on-chip high speed USB device controller
- *
- * Copyright (C) 2006 - 2008 Ingenic Semiconductor Inc.
- * Author: <jlwei@ingenic.cn>
- *
- * 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.
- */
-
-/*
- * This device has ep0, two bulk-in/interrupt-in endpoints, and one bulk-out endpoint.
- *
- *  - Endpoint numbering is fixed: ep0, ep1in-int, ep2in-bulk, ep1out-bulk.
- *  - DMA works with bulk-in (channel 1) and bulk-out (channel 2) endpoints.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/interrupt.h>
-#include <linux/proc_fs.h>
-#include <linux/usb.h>
-#include <linux/usb/gadget.h>
-#include <linux/clk.h>
-
-#include <asm/byteorder.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/system.h>
-#include <asm/mach-jz4740/jz4740.h>
-#include <asm/mach-jz4740/clock.h>
-
-#include "jz4740_udc.h"
-
-#define JZ_REG_UDC_FADDR	0x00 /* Function Address 8-bit */
-#define JZ_REG_UDC_POWER	0x01 /* Power Managemetn 8-bit */
-#define JZ_REG_UDC_INTRIN	0x02 /* Interrupt IN 16-bit */
-#define JZ_REG_UDC_INTROUT	0x04 /* Interrupt OUT 16-bit */
-#define JZ_REG_UDC_INTRINE	0x06 /* Intr IN enable 16-bit */
-#define JZ_REG_UDC_INTROUTE	0x08 /* Intr OUT enable 16-bit */
-#define JZ_REG_UDC_INTRUSB	0x0a /* Interrupt USB 8-bit */
-	#define JZ_REG_UDC_INTRUSBE	0x0b /* Interrupt USB Enable 8-bit */
-#define JZ_REG_UDC_FRAME	0x0c /* Frame number 16-bit */
-#define JZ_REG_UDC_INDEX	0x0e /* Index register 8-bit */
-#define JZ_REG_UDC_TESTMODE	0x0f /* USB test mode 8-bit */
-
-#define JZ_REG_UDC_CSR0		0x12 /* EP0 CSR 8-bit */
-#define JZ_REG_UDC_INMAXP	0x10 /* EP1-2 IN Max Pkt Size 16-bit */
-#define JZ_REG_UDC_INCSR	0x12 /* EP1-2 IN CSR LSB 8/16bit */
-#define JZ_REG_UDC_INCSRH	0x13 /* EP1-2 IN CSR MSB 8-bit */
-#define JZ_REG_UDC_OUTMAXP	0x14 /* EP1 OUT Max Pkt Size 16-bit */
-#define JZ_REG_UDC_OUTCSR	0x16 /* EP1 OUT CSR LSB 8/16bit */
-#define JZ_REG_UDC_OUTCSRH	0x17 /* EP1 OUT CSR MSB 8-bit */
-#define JZ_REG_UDC_OUTCOUNT	0x18 /* bytes in EP0/1 OUT FIFO 16-bit */
-
-#define JZ_REG_UDC_EP_FIFO(x)	(4 * (x) + 0x20)
-
-#define JZ_REG_UDC_EPINFO	0x78 /* Endpoint information */
-#define JZ_REG_UDC_RAMINFO	0x79 /* RAM information */
-
-#define JZ_REG_UDC_INTR		0x200 /* DMA pending interrupts */
-#define JZ_REG_UDC_CNTL1	0x204 /* DMA channel 1 control */
-#define JZ_REG_UDC_ADDR1	0x208 /* DMA channel 1 AHB memory addr */
-#define JZ_REG_UDC_COUNT1	0x20c /* DMA channel 1 byte count */
-#define JZ_REG_UDC_CNTL2	0x214 /* DMA channel 2 control */
-#define JZ_REG_UDC_ADDR2	0x218 /* DMA channel 2 AHB memory addr */
-#define JZ_REG_UDC_COUNT2	0x21c /* DMA channel 2 byte count */
-
-/* Power register bit masks */
-#define USB_POWER_SUSPENDM	0x01
-#define USB_POWER_RESUME	0x04
-#define USB_POWER_HSMODE	0x10
-#define USB_POWER_HSENAB	0x20
-#define USB_POWER_SOFTCONN	0x40
-
-/* Interrupt register bit masks */
-#define USB_INTR_SUSPEND	0x01
-#define USB_INTR_RESUME		0x02
-#define USB_INTR_RESET		0x04
-
-#define USB_INTR_EP0		0x0001
-#define USB_INTR_INEP1		0x0002
-#define USB_INTR_INEP2		0x0004
-#define USB_INTR_OUTEP1		0x0002
-
-/* CSR0 bit masks */
-#define USB_CSR0_OUTPKTRDY	0x01
-#define USB_CSR0_INPKTRDY	0x02
-#define USB_CSR0_SENTSTALL	0x04
-#define USB_CSR0_DATAEND	0x08
-#define USB_CSR0_SETUPEND	0x10
-#define USB_CSR0_SENDSTALL	0x20
-#define USB_CSR0_SVDOUTPKTRDY	0x40
-#define USB_CSR0_SVDSETUPEND	0x80
-
-/* Endpoint CSR register bits */
-#define USB_INCSRH_AUTOSET	0x80
-#define USB_INCSRH_ISO		0x40
-#define USB_INCSRH_MODE		0x20
-#define USB_INCSRH_DMAREQENAB	0x10
-#define USB_INCSRH_DMAREQMODE	0x04
-#define USB_INCSR_CDT		0x40
-#define USB_INCSR_SENTSTALL	0x20
-#define USB_INCSR_SENDSTALL	0x10
-#define USB_INCSR_FF		0x08
-#define USB_INCSR_UNDERRUN	0x04
-#define USB_INCSR_FFNOTEMPT	0x02
-#define USB_INCSR_INPKTRDY	0x01
-#define USB_OUTCSRH_AUTOCLR	0x80
-#define USB_OUTCSRH_ISO		0x40
-#define USB_OUTCSRH_DMAREQENAB	0x20
-#define USB_OUTCSRH_DNYT	0x10
-#define USB_OUTCSRH_DMAREQMODE	0x08
-#define USB_OUTCSR_CDT		0x80
-#define USB_OUTCSR_SENTSTALL	0x40
-#define USB_OUTCSR_SENDSTALL	0x20
-#define USB_OUTCSR_FF		0x10
-#define USB_OUTCSR_DATAERR	0x08
-#define USB_OUTCSR_OVERRUN	0x04
-#define USB_OUTCSR_FFFULL	0x02
-#define USB_OUTCSR_OUTPKTRDY	0x01
-
-/* Testmode register bits */
-#define USB_TEST_SE0NAK		0x01
-#define USB_TEST_J		0x02
-#define USB_TEST_K		0x04
-#define USB_TEST_PACKET		0x08
-
-/* DMA control bits */
-#define USB_CNTL_ENA		0x01
-#define USB_CNTL_DIR_IN		0x02
-#define USB_CNTL_MODE_1		0x04
-#define USB_CNTL_INTR_EN	0x08
-#define USB_CNTL_EP(n)		((n) << 4)
-#define USB_CNTL_BURST_0	(0 << 9)
-#define USB_CNTL_BURST_4	(1 << 9)
-#define USB_CNTL_BURST_8	(2 << 9)
-#define USB_CNTL_BURST_16	(3 << 9)
-
-
-#ifndef DEBUG
-# define DEBUG(fmt,args...) do {} while(0)
-#endif
-#ifndef DEBUG_EP0
-# define NO_STATES
-# define DEBUG_EP0(fmt,args...) do {} while(0)
-#endif
-#ifndef DEBUG_SETUP
-# define DEBUG_SETUP(fmt,args...) do {} while(0)
-#endif
-
-static unsigned int use_dma = 0;   /* 1: use DMA, 0: use PIO */
-
-module_param(use_dma, int, 0);
-MODULE_PARM_DESC(use_dma, "DMA mode enable flag");
-
-struct jz4740_udc *the_controller;
-
-/*
- * Local declarations.
- */
-static void jz4740_ep0_kick(struct jz4740_udc *dev, struct jz4740_ep *ep);
-static void jz4740_handle_ep0(struct jz4740_udc *dev, uint32_t intr);
-
-static void done(struct jz4740_ep *ep, struct jz4740_request *req,
-		 int status);
-static void pio_irq_enable(struct jz4740_ep *ep);
-static void pio_irq_disable(struct jz4740_ep *ep);
-static void stop_activity(struct jz4740_udc *dev,
-			  struct usb_gadget_driver *driver);
-static void nuke(struct jz4740_ep *ep, int status);
-static void flush(struct jz4740_ep *ep);
-static void udc_set_address(struct jz4740_udc *dev, unsigned char address);
-
-/*-------------------------------------------------------------------------*/
-
-/* inline functions of register read/write/set/clear  */
-
-static inline uint8_t usb_readb(struct jz4740_udc *udc, size_t reg)
-{
-	return readb(udc->base + reg);
-}
-
-static inline uint16_t usb_readw(struct jz4740_udc *udc, size_t reg)
-{
-	return readw(udc->base + reg);
-}
-
-static inline uint32_t usb_readl(struct jz4740_udc *udc, size_t reg)
-{
-	return readl(udc->base + reg);
-}
-
-static inline void usb_writeb(struct jz4740_udc *udc, size_t reg, uint8_t val)
-{
-	writeb(val, udc->base + reg);
-}
-
-static inline void usb_writew(struct jz4740_udc *udc, size_t reg, uint16_t val)
-{
-	writew(val, udc->base + reg);
-}
-
-static inline void usb_writel(struct jz4740_udc *udc, size_t reg, uint32_t val)
-{
-	writel(val, udc->base + reg);
-}
-
-static inline void usb_setb(struct jz4740_udc *udc, size_t reg, uint8_t mask)
-{
-	usb_writeb(udc, reg, usb_readb(udc, reg) | mask);
-}
-
-static inline void usb_setw(struct jz4740_udc *udc, size_t reg, uint8_t mask)
-{
-	usb_writew(udc, reg, usb_readw(udc, reg) | mask);
-}
-
-static inline void usb_setl(struct jz4740_udc *udc, size_t reg, uint32_t mask)
-{
-	usb_writel(udc, reg, usb_readl(udc, reg) | mask);
-}
-
-static inline void usb_clearb(struct jz4740_udc *udc, size_t reg, uint8_t mask)
-{
-	usb_writeb(udc, reg, usb_readb(udc, reg) & ~mask);
-}
-
-static inline void usb_clearw(struct jz4740_udc *udc, size_t reg, uint16_t mask)
-{
-	usb_writew(udc, reg, usb_readw(udc, reg) & ~mask);
-}
-
-static inline void usb_clearl(struct jz4740_udc *udc, size_t reg, uint32_t mask)
-{
-	usb_writel(udc, reg, usb_readl(udc, reg) & ~mask);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline void jz_udc_set_index(struct jz4740_udc *udc, uint8_t index)
-{
-	usb_writeb(udc, JZ_REG_UDC_INDEX, index);
-}
-
-static inline void jz_udc_select_ep(struct jz4740_ep *ep)
-{
-	jz_udc_set_index(ep->dev, ep_index(ep));
-}
-
-static inline int write_packet(struct jz4740_ep *ep,
-				   struct jz4740_request *req, int max)
-{
-	uint8_t *buf;
-	int length, nlong, nbyte;
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	buf = req->req.buf + req->req.actual;
-	prefetch(buf);
-
-	length = req->req.length - req->req.actual;
-	length = min(length, max);
-	req->req.actual += length;
-
-	DEBUG("Write %d (max %d), fifo %x\n", length, max, ep->fifo);
-
-	nlong = length >> 2;
-	nbyte = length & 0x3;
-	while (nlong--) {
-		usb_writel(ep->dev, ep->fifo, *((uint32_t *)buf));
-		buf += 4;
-	}
-	while (nbyte--) {
-		usb_writeb(ep->dev, ep->fifo, *buf++);
-	}
-
-	return length;
-}
-
-static inline int read_packet(struct jz4740_ep *ep,
-				  struct jz4740_request *req, int count)
-{
-	uint8_t *buf;
-	int length, nlong, nbyte;
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	buf = req->req.buf + req->req.actual;
-	prefetchw(buf);
-
-	length = req->req.length - req->req.actual;
-	length = min(length, count);
-	req->req.actual += length;
-
-	DEBUG("Read %d, fifo %x\n", length, ep->fifo);
-
-	nlong = length >> 2;
-	nbyte = length & 0x3;
-	while (nlong--) {
-		*((uint32_t *)buf) = usb_readl(ep->dev, ep->fifo);
-		buf += 4;
-	}
-	while (nbyte--) {
-		*buf++ = usb_readb(ep->dev, ep->fifo);
-	}
-
-	return length;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * 	udc_disable - disable USB device controller
- */
-static void udc_disable(struct jz4740_udc *dev)
-{
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	udc_set_address(dev, 0);
-
-	/* Disable interrupts */
-	usb_writew(dev, JZ_REG_UDC_INTRINE, 0);
-	usb_writew(dev, JZ_REG_UDC_INTROUTE, 0);
-	usb_writeb(dev, JZ_REG_UDC_INTRUSBE, 0);
-
-	/* Disable DMA */
-	usb_writel(dev, JZ_REG_UDC_CNTL1, 0);
-	usb_writel(dev, JZ_REG_UDC_CNTL2, 0);
-
-	/* Disconnect from usb */
-	usb_clearb(dev, JZ_REG_UDC_POWER, USB_POWER_SOFTCONN);
-
-	/* Disable the USB PHY */
-	clk_disable(dev->clk);
-
-	dev->ep0state = WAIT_FOR_SETUP;
-	dev->gadget.speed = USB_SPEED_UNKNOWN;
-
-	return;
-}
-
-/*
- * 	udc_reinit - initialize software state
- */
-static void udc_reinit(struct jz4740_udc *dev)
-{
-	int i;
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	/* device/ep0 records init */
-	INIT_LIST_HEAD(&dev->gadget.ep_list);
-	INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
-	dev->ep0state = WAIT_FOR_SETUP;
-
-	for (i = 0; i < UDC_MAX_ENDPOINTS; i++) {
-		struct jz4740_ep *ep = &dev->ep[i];
-
-		if (i != 0)
-			list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
-
-		INIT_LIST_HEAD(&ep->queue);
-		ep->desc = 0;
-		ep->stopped = 0;
-		ep->pio_irqs = 0;
-	}
-}
-
-/* until it's enabled, this UDC should be completely invisible
- * to any USB host.
- */
-static void udc_enable(struct jz4740_udc *dev)
-{
-	int i;
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	/* UDC state is incorrect - Added by River */
-	if (dev->state != UDC_STATE_ENABLE) {
-		return;
-	}
-
-	dev->gadget.speed = USB_SPEED_UNKNOWN;
-
-	/* Flush FIFO for each */
-	for (i = 0; i < UDC_MAX_ENDPOINTS; i++) {
-		struct jz4740_ep *ep = &dev->ep[i];
-
-		jz_udc_set_index(dev, ep_index(ep));
-		flush(ep);
-	}
-
-	/* Set this bit to allow the UDC entering low-power mode when
-	 * there are no actions on the USB bus.
-	 * UDC still works during this bit was set.
-	 */
-	jz4740_clock_udc_enable_auto_suspend();
-
-	/* Enable the USB PHY */
-	clk_enable(dev->clk);
-
-	/* Disable interrupts */
-/*	usb_writew(dev, JZ_REG_UDC_INTRINE, 0);
-	usb_writew(dev, JZ_REG_UDC_INTROUTE, 0);
-	usb_writeb(dev, JZ_REG_UDC_INTRUSBE, 0);*/
-
-	/* Enable interrupts */
-	usb_setw(dev, JZ_REG_UDC_INTRINE, USB_INTR_EP0);
-	usb_setb(dev, JZ_REG_UDC_INTRUSBE, USB_INTR_RESET);
-	/* Don't enable rest of the interrupts */
-	/* usb_setw(dev, JZ_REG_UDC_INTRINE, USB_INTR_INEP1 | USB_INTR_INEP2);
-	   usb_setw(dev, JZ_REG_UDC_INTROUTE, USB_INTR_OUTEP1); */
-
-	/* Enable SUSPEND */
-	/* usb_setb(dev, JZ_REG_UDC_POWER, USB_POWER_SUSPENDM); */
-
-	/* Enable HS Mode */
-	usb_setb(dev, JZ_REG_UDC_POWER, USB_POWER_HSENAB);
-
-	/* Let host detect UDC:
-	 * Software must write a 1 to the PMR:USB_POWER_SOFTCONN bit to turn this
-	 * transistor on and pull the USBDP pin HIGH.
-	 */
-	usb_setb(dev, JZ_REG_UDC_POWER, USB_POWER_SOFTCONN);
-
-	return;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* keeping it simple:
- * - one bus driver, initted first;
- * - one function driver, initted second
- */
-
-/*
- * Register entry point for the peripheral controller driver.
- */
-
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
-{
-	struct jz4740_udc *dev = the_controller;
-	int retval;
-
-	if (!driver || !driver->bind) {
-		return -EINVAL;
-	}
-
-	if (!dev) {
-		return -ENODEV;
-	}
-
-	if (dev->driver) {
-		return -EBUSY;
-	}
-
-	/* hook up the driver */
-	dev->driver = driver;
-	dev->gadget.dev.driver = &driver->driver;
-
-	retval = driver->bind(&dev->gadget);
-	if (retval) {
-		DEBUG("%s: bind to driver %s --> error %d\n", dev->gadget.name,
-		            driver->driver.name, retval);
-		dev->driver = 0;
-		return retval;
-	}
-
-	/* then enable host detection and ep0; and we're ready
-	 * for set_configuration as well as eventual disconnect.
-	 */
-	udc_enable(dev);
-
-	DEBUG("%s: registered gadget driver '%s'\n", dev->gadget.name,
-	      driver->driver.name);
-
-	return 0;
-}
-
-EXPORT_SYMBOL(usb_gadget_register_driver);
-
-static void stop_activity(struct jz4740_udc *dev,
-			  struct usb_gadget_driver *driver)
-{
-	int i;
-
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	/* don't disconnect drivers more than once */
-	if (dev->gadget.speed == USB_SPEED_UNKNOWN)
-		driver = 0;
-	dev->gadget.speed = USB_SPEED_UNKNOWN;
-
-	/* prevent new request submissions, kill any outstanding requests  */
-	for (i = 0; i < UDC_MAX_ENDPOINTS; i++) {
-		struct jz4740_ep *ep = &dev->ep[i];
-
-		ep->stopped = 1;
-
-		jz_udc_set_index(dev, ep_index(ep));
-		nuke(ep, -ESHUTDOWN);
-	}
-
-	/* report disconnect; the driver is already quiesced */
-	if (driver) {
-		spin_unlock(&dev->lock);
-		driver->disconnect(&dev->gadget);
-		spin_lock(&dev->lock);
-	}
-
-	/* re-init driver-visible data structures */
-	udc_reinit(dev);
-}
-
-
-/*
- * Unregister entry point for the peripheral controller driver.
- */
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
-{
-	struct jz4740_udc *dev = the_controller;
-	unsigned long flags;
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	if (!dev)
-		return -ENODEV;
-	if (!driver || driver != dev->driver)
-		return -EINVAL;
-	if (!driver->unbind)
-		return -EBUSY;
-
-	spin_lock_irqsave(&dev->lock, flags);
-	dev->driver = 0;
-	stop_activity(dev, driver);
-	spin_unlock_irqrestore(&dev->lock, flags);
-
-	driver->unbind(&dev->gadget);
-
-	udc_disable(dev);
-
-	DEBUG("unregistered driver '%s'\n", driver->driver.name);
-
-	return 0;
-}
-
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Starting DMA using mode 1
- */
-static void kick_dma(struct jz4740_ep *ep, struct jz4740_request *req)
-{
-	struct jz4740_udc *dev = ep->dev;
-	uint32_t count = req->req.length;
-	uint32_t physaddr = virt_to_phys((void *)req->req.buf);
-
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	jz_udc_select_ep(ep);
-
-	if (ep_is_in(ep)) { /* Bulk-IN transfer using DMA channel 1 */
-		ep->reg_addr = JZ_REG_UDC_ADDR1;
-
-		dma_cache_wback_inv((unsigned long)req->req.buf, count);
-
-		pio_irq_enable(ep);
-
-		usb_writeb(dev, JZ_REG_UDC_INCSRH,
-			   USB_INCSRH_DMAREQENAB | USB_INCSRH_AUTOSET | USB_INCSRH_DMAREQMODE);
-
-		usb_writel(dev, JZ_REG_UDC_ADDR1, physaddr);
-		usb_writel(dev, JZ_REG_UDC_COUNT1, count);
-		usb_writel(dev, JZ_REG_UDC_CNTL1, USB_CNTL_ENA | USB_CNTL_DIR_IN | USB_CNTL_MODE_1 |
-			   USB_CNTL_INTR_EN | USB_CNTL_BURST_16 | USB_CNTL_EP(ep_index(ep)));
-	}
-	else { /* Bulk-OUT transfer using DMA channel 2 */
-		ep->reg_addr = JZ_REG_UDC_ADDR2;
-
-		dma_cache_wback_inv((unsigned long)req->req.buf, count);
-
-		pio_irq_enable(ep);
-
-		usb_setb(dev, JZ_REG_UDC_OUTCSRH,
-			 USB_OUTCSRH_DMAREQENAB | USB_OUTCSRH_AUTOCLR | USB_OUTCSRH_DMAREQMODE);
-
-		usb_writel(dev, JZ_REG_UDC_ADDR2, physaddr);
-		usb_writel(dev, JZ_REG_UDC_COUNT2, count);
-		usb_writel(dev, JZ_REG_UDC_CNTL2, USB_CNTL_ENA | USB_CNTL_MODE_1 |
-			   USB_CNTL_INTR_EN | USB_CNTL_BURST_16 | USB_CNTL_EP(ep_index(ep)));
-	}
-}
-
-/*-------------------------------------------------------------------------*/
-
-/** Write request to FIFO (max write == maxp size)
- *  Return:  0 = still running, 1 = completed, negative = errno
- *  NOTE: INDEX register must be set for EP
- */
-static int write_fifo(struct jz4740_ep *ep, struct jz4740_request *req)
-{
-	struct jz4740_udc *dev = ep->dev;
-	uint32_t max, csr;
-	uint32_t physaddr = virt_to_phys((void *)req->req.buf);
-
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-	max = le16_to_cpu(ep->desc->wMaxPacketSize);
-
-	if (use_dma) {
-		uint32_t dma_count;
-
-		/* DMA interrupt generated due to the last packet loaded into the FIFO */
-
-		dma_count = usb_readl(dev, ep->reg_addr) - physaddr;
-		req->req.actual += dma_count;
-
-		if (dma_count % max) {
-			/* If the last packet is less than MAXP, set INPKTRDY manually */
-			usb_setb(dev, ep->csr, USB_INCSR_INPKTRDY);
-		}
-
-		done(ep, req, 0);
-		if (list_empty(&ep->queue)) {
-			pio_irq_disable(ep);
-			return 1;
-		}
-		else {
-			/* advance the request queue */
-			req = list_entry(ep->queue.next, struct jz4740_request, queue);
-			kick_dma(ep, req);
-			return 0;
-		}
-	}
-
-	/*
-	 * PIO mode handling starts here ...
-	 */
-
-	csr = usb_readb(dev, ep->csr);
-
-	if (!(csr & USB_INCSR_FFNOTEMPT)) {
-		unsigned count;
-		int is_last, is_short;
-
-		count = write_packet(ep, req, max);
-		usb_setb(dev, ep->csr, USB_INCSR_INPKTRDY);
-
-		/* last packet is usually short (or a zlp) */
-		if (unlikely(count != max))
-			is_last = is_short = 1;
-		else {
-			if (likely(req->req.length != req->req.actual)
-			    || req->req.zero)
-				is_last = 0;
-			else
-				is_last = 1;
-			/* interrupt/iso maxpacket may not fill the fifo */
-			is_short = unlikely(max < ep_maxpacket(ep));
-		}
-
-		DEBUG("%s: wrote %s %d bytes%s%s %d left %p\n", __FUNCTION__,
-		      ep->ep.name, count,
-		      is_last ? "/L" : "", is_short ? "/S" : "",
-		      req->req.length - req->req.actual, req);
-
-		/* requests complete when all IN data is in the FIFO */
-		if (is_last) {
-			done(ep, req, 0);
-			if (list_empty(&ep->queue)) {
-				pio_irq_disable(ep);
-			}
-			return 1;
-		}
-	} else {
-		DEBUG("Hmm.. %d ep FIFO is not empty!\n", ep_index(ep));
-	}
-
-	return 0;
-}
-
-/** Read to request from FIFO (max read == bytes in fifo)
- *  Return:  0 = still running, 1 = completed, negative = errno
- *  NOTE: INDEX register must be set for EP
- */
-static int read_fifo(struct jz4740_ep *ep, struct jz4740_request *req)
-{
-	struct jz4740_udc *dev = ep->dev;
-	uint32_t csr;
-	unsigned count, is_short;
-	uint32_t physaddr = virt_to_phys((void *)req->req.buf);
-
-	if (use_dma) {
-		uint32_t dma_count;
-
-		/* DMA interrupt generated due to a packet less than MAXP loaded into the FIFO */
-
-		dma_count = usb_readl(dev, ep->reg_addr) - physaddr;
-		req->req.actual += dma_count;
-
-		/* Disable interrupt and DMA */
-		pio_irq_disable(ep);
-		usb_writel(dev, JZ_REG_UDC_CNTL2, 0);
-
-		/* Read all bytes from this packet */
-		count = usb_readw(dev, JZ_REG_UDC_OUTCOUNT);
-		count = read_packet(ep, req, count);
-
-		if (count) {
-			/* If the last packet is greater than zero, clear OUTPKTRDY manually */
-			usb_clearb(dev, ep->csr, USB_OUTCSR_OUTPKTRDY);
-		}
-		done(ep, req, 0);
-
-		if (!list_empty(&ep->queue)) {
-			/* advance the request queue */
-			req = list_entry(ep->queue.next, struct jz4740_request, queue);
-			kick_dma(ep, req);
-		}
-
-		return 1;
-	}
-
-	/*
-	 * PIO mode handling starts here ...
-	 */
-
-	/* make sure there's a packet in the FIFO. */
-	csr = usb_readb(dev, ep->csr);
-	if (!(csr & USB_OUTCSR_OUTPKTRDY)) {
-		DEBUG("%s: Packet NOT ready!\n", __FUNCTION__);
-		return -EINVAL;
-	}
-
-	/* read all bytes from this packet */
-	count = usb_readw(dev, JZ_REG_UDC_OUTCOUNT);
-
-	is_short = (count < ep->ep.maxpacket);
-
-	count = read_packet(ep, req, count);
-
-	DEBUG("read %s %02x, %d bytes%s req %p %d/%d\n",
-	      ep->ep.name, csr, count,
-	      is_short ? "/S" : "", req, req->req.actual, req->req.length);
-
-	/* Clear OutPktRdy */
-	usb_clearb(dev, ep->csr, USB_OUTCSR_OUTPKTRDY);
-
-	/* completion */
-	if (is_short || req->req.actual == req->req.length) {
-		done(ep, req, 0);
-
-		if (list_empty(&ep->queue))
-			pio_irq_disable(ep);
-		return 1;
-	}
-
-	/* finished that packet.  the next one may be waiting... */
-	return 0;
-}
-
-/*
- *	done - retire a request; caller blocked irqs
- *  INDEX register is preserved to keep same
- */
-static void done(struct jz4740_ep *ep, struct jz4740_request *req, int status)
-{
-	unsigned int stopped = ep->stopped;
-	unsigned long flags;
-	uint32_t index;
-
-	DEBUG("%s, %p\n", __FUNCTION__, ep);
-	list_del_init(&req->queue);
-
-	if (likely(req->req.status == -EINPROGRESS))
-		req->req.status = status;
-	else
-		status = req->req.status;
-
-	if (status && status != -ESHUTDOWN)
-		DEBUG("complete %s req %p stat %d len %u/%u\n",
-		      ep->ep.name, &req->req, status,
-		      req->req.actual, req->req.length);
-
-	/* don't modify queue heads during completion callback */
-	ep->stopped = 1;
-	/* Read current index (completion may modify it) */
-	spin_lock_irqsave(&ep->dev->lock, flags);
-	index = usb_readb(ep->dev, JZ_REG_UDC_INDEX);
-
-	req->req.complete(&ep->ep, &req->req);
-
-	/* Restore index */
-	jz_udc_set_index(ep->dev, index);
-	spin_unlock_irqrestore(&ep->dev->lock, flags);
-	ep->stopped = stopped;
-}
-
-/** Enable EP interrupt */
-static void pio_irq_enable(struct jz4740_ep *ep)
-{
-	uint8_t index = ep_index(ep);
-	struct jz4740_udc *dev = ep->dev;
-	DEBUG("%s: EP%d %s\n", __FUNCTION__, ep_index(ep), ep_is_in(ep) ? "IN": "OUT");
-
-	if (ep_is_in(ep)) {
-		switch (index) {
-		case 1:
-		case 2:
-			usb_setw(dev, JZ_REG_UDC_INTRINE, BIT(index));
-			dev->in_mask |= BIT(index);
-			break;
-		default:
-			DEBUG("Unknown endpoint: %d\n", index);
-			break;
-		}
-	}
-	else {
-		switch (index) {
-		case 1:
-			usb_setw(dev, JZ_REG_UDC_INTROUTE, BIT(index));
-			dev->out_mask |= BIT(index);
-			break;
-		default:
-			DEBUG("Unknown endpoint: %d\n", index);
-			break;
-		}
-	}
-}
-
-/** Disable EP interrupt */
-static void pio_irq_disable(struct jz4740_ep *ep)
-{
-	uint8_t index = ep_index(ep);
-	struct jz4740_udc *dev = ep->dev;
-
-	DEBUG("%s: EP%d %s\n", __FUNCTION__, ep_index(ep), ep_is_in(ep) ? "IN": "OUT");
-
-	if (ep_is_in(ep)) {
-		switch (ep_index(ep)) {
-		case 1:
-		case 2:
-			usb_clearw(ep->dev, JZ_REG_UDC_INTRINE, BIT(index));
-			dev->in_mask &= ~BIT(index);
-			break;
-		default:
-			DEBUG("Unknown endpoint: %d\n", index);
-			break;
-		}
-	}
-	else {
-		switch (ep_index(ep)) {
-		case 1:
-			usb_clearw(ep->dev, JZ_REG_UDC_INTROUTE, BIT(index));
-			dev->out_mask &= ~BIT(index);
-			break;
-		default:
-			DEBUG("Unknown endpoint: %d\n", index);
-			break;
-	    }
-	}
-}
-
-/*
- * 	nuke - dequeue ALL requests
- */
-static void nuke(struct jz4740_ep *ep, int status)
-{
-	struct jz4740_request *req;
-
-	DEBUG("%s, %p\n", __FUNCTION__, ep);
-
-	/* Flush FIFO */
-	flush(ep);
-
-	/* called with irqs blocked */
-	while (!list_empty(&ep->queue)) {
-		req = list_entry(ep->queue.next, struct jz4740_request, queue);
-		done(ep, req, status);
-	}
-
-	/* Disable IRQ if EP is enabled (has descriptor) */
-	if (ep->desc)
-		pio_irq_disable(ep);
-}
-
-/** Flush EP FIFO
- * NOTE: INDEX register must be set before this call
- */
-static void flush(struct jz4740_ep *ep)
-{
-	DEBUG("%s: %s\n", __FUNCTION__, ep->ep.name);
-
-	switch (ep->type) {
-	case ep_bulk_in:
-	case ep_interrupt:
-		usb_setb(ep->dev, ep->csr, USB_INCSR_FF);
-		break;
-	case ep_bulk_out:
-		usb_setb(ep->dev, ep->csr, USB_OUTCSR_FF);
-		break;
-	case ep_control:
-		break;
-	}
-}
-
-/**
- * jz4740_in_epn - handle IN interrupt
- */
-static void jz4740_in_epn(struct jz4740_udc *dev, uint32_t ep_idx, uint32_t intr)
-{
-	uint32_t csr;
-	struct jz4740_ep *ep = &dev->ep[ep_idx + 1];
-	struct jz4740_request *req;
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	jz_udc_set_index(dev, ep_index(ep));
-
-	csr = usb_readb(dev, ep->csr);
-	DEBUG("%s: %d, csr %x\n", __FUNCTION__, ep_idx, csr);
-
-	if (csr & USB_INCSR_SENTSTALL) {
-		DEBUG("USB_INCSR_SENTSTALL\n");
-		usb_clearb(dev, ep->csr, USB_INCSR_SENTSTALL);
-		return;
-	}
-
-	if (!ep->desc) {
-		DEBUG("%s: NO EP DESC\n", __FUNCTION__);
-		return;
-	}
-
-	if (list_empty(&ep->queue))
-		req = 0;
-	else
-		req = list_entry(ep->queue.next, struct jz4740_request, queue);
-
-	DEBUG("req: %p\n", req);
-
-	if (!req)
-		return;
-
-	write_fifo(ep, req);
-}
-
-/*
- * Bulk OUT (recv)
- */
-static void jz4740_out_epn(struct jz4740_udc *dev, uint32_t ep_idx, uint32_t intr)
-{
-	struct jz4740_ep *ep = &dev->ep[ep_idx];
-	struct jz4740_request *req;
-
-	DEBUG("%s: %d\n", __FUNCTION__, ep_idx);
-
-	jz_udc_set_index(dev, ep_index(ep));
-	if (ep->desc) {
-		uint32_t csr;
-
-		if (use_dma) {
-			/* DMA starts here ... */
-			if (list_empty(&ep->queue))
-				req = 0;
-			else
-				req = list_entry(ep->queue.next, struct jz4740_request, queue);
-
-			if (req)
-				read_fifo(ep, req);
-			return;
-		}
-
-		/*
-		 * PIO mode starts here ...
-		 */
-
-		while ((csr = usb_readb(dev, ep->csr)) &
-		       (USB_OUTCSR_OUTPKTRDY | USB_OUTCSR_SENTSTALL)) {
-			DEBUG("%s: %x\n", __FUNCTION__, csr);
-
-			if (csr & USB_OUTCSR_SENTSTALL) {
-				DEBUG("%s: stall sent, flush fifo\n",
-				      __FUNCTION__);
-				/* usb_set(USB_OUT_CSR1_FIFO_FLUSH, ep->csr1); */
-				flush(ep);
-			} else if (csr & USB_OUTCSR_OUTPKTRDY) {
-				if (list_empty(&ep->queue))
-					req = 0;
-				else
-					req =
-						list_entry(ep->queue.next,
-							   struct jz4740_request,
-							   queue);
-
-				if (!req) {
-					DEBUG("%s: NULL REQ %d\n",
-					      __FUNCTION__, ep_idx);
-					break;
-				} else {
-					read_fifo(ep, req);
-				}
-			}
-		}
-	} else {
-		/* Throw packet away.. */
-		DEBUG("%s: ep %p ep_indx %d No descriptor?!?\n", __FUNCTION__, ep, ep_idx);
-		flush(ep);
-	}
-}
-
-/** Halt specific EP
- *  Return 0 if success
- *  NOTE: Sets INDEX register to EP !
- */
-static int jz4740_set_halt(struct usb_ep *_ep, int value)
-{
-	struct jz4740_udc *dev;
-	struct jz4740_ep *ep;
-	unsigned long flags;
-
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	ep = container_of(_ep, struct jz4740_ep, ep);
-	if (unlikely(!_ep || (!ep->desc && ep->type != ep_control))) {
-		DEBUG("%s, bad ep\n", __FUNCTION__);
-		return -EINVAL;
-	}
-
-	dev = ep->dev;
-
-	spin_lock_irqsave(&dev->lock, flags);
-
-	jz_udc_select_ep(ep);
-
-	DEBUG("%s, ep %d, val %d\n", __FUNCTION__, ep_index(ep), value);
-
-	if (ep_index(ep) == 0) {
-		/* EP0 */
-		usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SENDSTALL);
-	} else if (ep_is_in(ep)) {
-		uint32_t csr = usb_readb(dev, ep->csr);
-		if (value && ((csr & USB_INCSR_FFNOTEMPT)
-			      || !list_empty(&ep->queue))) {
-			/*
-			 * Attempts to halt IN endpoints will fail (returning -EAGAIN)
-			 * if any transfer requests are still queued, or if the controller
-			 * FIFO still holds bytes that the host hasn’t collected.
-			 */
-			spin_unlock_irqrestore(&dev->lock, flags);
-			DEBUG
-			    ("Attempt to halt IN endpoint failed (returning -EAGAIN) %d %d\n",
-			     (csr & USB_INCSR_FFNOTEMPT),
-			     !list_empty(&ep->queue));
-			return -EAGAIN;
-		}
-		flush(ep);
-		if (value) {
-			usb_setb(dev, ep->csr, USB_INCSR_SENDSTALL);
-		}
-		else {
-			usb_clearb(dev, ep->csr, USB_INCSR_SENDSTALL);
-			usb_setb(dev, ep->csr, USB_INCSR_CDT);
-		}
-	} else {
-
-		flush(ep);
-		if (value) {
-			usb_setb(dev, ep->csr, USB_OUTCSR_SENDSTALL);
-		}
-		else {
-			usb_clearb(dev, ep->csr, USB_OUTCSR_SENDSTALL);
-			usb_setb(dev, ep->csr, USB_OUTCSR_CDT);
-		}
-	}
-
-	if (value) {
-		ep->stopped = 1;
-	} else {
-		ep->stopped = 0;
-	}
-
-	spin_unlock_irqrestore(&dev->lock, flags);
-
-	DEBUG("%s %s halted\n", _ep->name, value == 0 ? "NOT" : "IS");
-
-	return 0;
-}
-
-
-static int jz4740_ep_enable(struct usb_ep *_ep,
-			    const struct usb_endpoint_descriptor *desc)
-{
-	struct jz4740_ep *ep;
-	struct jz4740_udc *dev;
-	unsigned long flags;
-	uint32_t max, csrh = 0;
-
-	DEBUG("%s: trying to enable %s\n", __FUNCTION__, _ep->name);
-
-	if (!_ep || !desc)
-		return -EINVAL;
-
-	ep = container_of(_ep, struct jz4740_ep, ep);
-	if (ep->desc || ep->type == ep_control
-	    || desc->bDescriptorType != USB_DT_ENDPOINT
-	    || ep->bEndpointAddress != desc->bEndpointAddress) {
-		DEBUG("%s, bad ep or descriptor\n", __FUNCTION__);
-		return -EINVAL;
-	}
-
-	/* xfer types must match, except that interrupt ~= bulk */
-	if (ep->bmAttributes != desc->bmAttributes
-	    && ep->bmAttributes != USB_ENDPOINT_XFER_BULK
-	    && desc->bmAttributes != USB_ENDPOINT_XFER_INT) {
-		DEBUG("%s, %s type mismatch\n", __FUNCTION__, _ep->name);
-		return -EINVAL;
-	}
-
-	dev = ep->dev;
-	if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
-		DEBUG("%s, bogus device state\n", __FUNCTION__);
-		return -ESHUTDOWN;
-	}
-
-	max = le16_to_cpu(desc->wMaxPacketSize);
-
-	spin_lock_irqsave(&ep->dev->lock, flags);
-
-	/* Configure the endpoint */
-	jz_udc_set_index(dev, desc->bEndpointAddress & 0x0F);
-	if (ep_is_in(ep)) {
-		usb_writew(dev, JZ_REG_UDC_INMAXP, max);
-		switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
-		case USB_ENDPOINT_XFER_BULK:
-		case USB_ENDPOINT_XFER_INT:
-			csrh &= ~USB_INCSRH_ISO;
-			break;
-		case USB_ENDPOINT_XFER_ISOC:
-			csrh |= USB_INCSRH_ISO;
-			break;
-		}
-		usb_writeb(dev, JZ_REG_UDC_INCSRH, csrh);
-	}
-	else {
-		usb_writew(dev, JZ_REG_UDC_OUTMAXP, max);
-		switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
-		case USB_ENDPOINT_XFER_BULK:
-			 csrh &= ~USB_OUTCSRH_ISO;
-			break;
-		case USB_ENDPOINT_XFER_INT:
-			csrh &= ~USB_OUTCSRH_ISO;
-			csrh |= USB_OUTCSRH_DNYT;
-			break;
-		case USB_ENDPOINT_XFER_ISOC:
-			csrh |= USB_OUTCSRH_ISO;
-			break;
-		}
-		usb_writeb(dev, JZ_REG_UDC_OUTCSRH, csrh);
-	}
-
-
-	ep->stopped = 0;
-	ep->desc = desc;
-	ep->pio_irqs = 0;
-	ep->ep.maxpacket = max;
-
-	spin_unlock_irqrestore(&ep->dev->lock, flags);
-
-	/* Reset halt state (does flush) */
-	jz4740_set_halt(_ep, 0);
-
-	DEBUG("%s: enabled %s\n", __FUNCTION__, _ep->name);
-
-	return 0;
-}
-
-/** Disable EP
- *  NOTE: Sets INDEX register
- */
-static int jz4740_ep_disable(struct usb_ep *_ep)
-{
-	struct jz4740_ep *ep;
-	unsigned long flags;
-
-	DEBUG("%s, %p\n", __FUNCTION__, _ep);
-
-	ep = container_of(_ep, struct jz4740_ep, ep);
-	if (!_ep || !ep->desc) {
-		DEBUG("%s, %s not enabled\n", __FUNCTION__,
-		      _ep ? ep->ep.name : NULL);
-		return -EINVAL;
-	}
-
-	spin_lock_irqsave(&ep->dev->lock, flags);
-
-	jz_udc_select_ep(ep);
-
-	/* Nuke all pending requests (does flush) */
-	nuke(ep, -ESHUTDOWN);
-
-	/* Disable ep IRQ */
-	pio_irq_disable(ep);
-
-	ep->desc = 0;
-	ep->stopped = 1;
-
-	spin_unlock_irqrestore(&ep->dev->lock, flags);
-
-	DEBUG("%s: disabled %s\n", __FUNCTION__, _ep->name);
-	return 0;
-}
-
-static struct usb_request *jz4740_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
-{
-	struct jz4740_request *req;
-
-	DEBUG("%s, %p\n", __FUNCTION__, ep);
-
-	req = kzalloc(sizeof(*req), gfp_flags);
-	if (!req)
-		return 0;
-
-	INIT_LIST_HEAD(&req->queue);
-
-	return &req->req;
-}
-
-static void jz4740_free_request(struct usb_ep *ep, struct usb_request *_req)
-{
-	struct jz4740_request *req;
-
-	DEBUG("%s, %p\n", __FUNCTION__, ep);
-
-	req = container_of(_req, struct jz4740_request, req);
-	WARN_ON(!list_empty(&req->queue));
-	kfree(req);
-}
-
-/*--------------------------------------------------------------------*/
-
-/** Queue one request
- *  Kickstart transfer if needed
- *  NOTE: Sets INDEX register
- */
-static int jz4740_queue(struct usb_ep *_ep, struct usb_request *_req,
-			gfp_t gfp_flags)
-{
-	struct jz4740_request *req;
-	struct jz4740_ep *ep;
-	struct jz4740_udc *dev;
-	unsigned long flags;
-
-	DEBUG("%s, %p\n", __FUNCTION__, _ep);
-
-	req = container_of(_req, struct jz4740_request, req);
-	if (unlikely
-	    (!_req || !_req->complete || !_req->buf
-	     || !list_empty(&req->queue))) {
-		DEBUG("%s, bad params\n", __FUNCTION__);
-		return -EINVAL;
-	}
-
-	ep = container_of(_ep, struct jz4740_ep, ep);
-	if (unlikely(!_ep || (!ep->desc && ep->type != ep_control))) {
-		DEBUG("%s, bad ep\n", __FUNCTION__);
-		return -EINVAL;
-	}
-
-	dev = ep->dev;
-	if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) {
-		DEBUG("%s, bogus device state %p\n", __FUNCTION__, dev->driver);
-		return -ESHUTDOWN;
-	}
-
-	DEBUG("%s queue req %p, len %d buf %p\n", _ep->name, _req, _req->length,
-	      _req->buf);
-
-	spin_lock_irqsave(&dev->lock, flags);
-
-	_req->status = -EINPROGRESS;
-	_req->actual = 0;
-
-	/* kickstart this i/o queue? */
-	DEBUG("Add to %d Q %d %d\n", ep_index(ep), list_empty(&ep->queue),
-	      ep->stopped);
-	if (list_empty(&ep->queue) && likely(!ep->stopped)) {
-		uint32_t csr;
-
-		if (unlikely(ep_index(ep) == 0)) {
-			/* EP0 */
-			list_add_tail(&req->queue, &ep->queue);
-			jz4740_ep0_kick(dev, ep);
-			req = 0;
-		} else if (use_dma) {
-			/* DMA */
-			kick_dma(ep, req);
-		}
-		/* PIO */
-		else if (ep_is_in(ep)) {
-			/* EP1 & EP2 */
-			jz_udc_set_index(dev, ep_index(ep));
-			csr = usb_readb(dev, ep->csr);
-			pio_irq_enable(ep);
-			if (!(csr & USB_INCSR_FFNOTEMPT)) {
-				if (write_fifo(ep, req) == 1)
-					req = 0;
-			}
-		} else {
-			/* EP1 */
-			jz_udc_set_index(dev, ep_index(ep));
-			csr = usb_readb(dev, ep->csr);
-			pio_irq_enable(ep);
-			if (csr & USB_OUTCSR_OUTPKTRDY) {
-				if (read_fifo(ep, req) == 1)
-					req = 0;
-			}
-		}
-	}
-
-	/* pio or dma irq handler advances the queue. */
-	if (likely(req != 0))
-		list_add_tail(&req->queue, &ep->queue);
-
-	spin_unlock_irqrestore(&dev->lock, flags);
-
-	return 0;
-}
-
-/* dequeue JUST ONE request */
-static int jz4740_dequeue(struct usb_ep *_ep, struct usb_request *_req)
-{
-	struct jz4740_ep *ep;
-	struct jz4740_request *req;
-	unsigned long flags;
-
-	DEBUG("%s, %p\n", __FUNCTION__, _ep);
-
-	ep = container_of(_ep, struct jz4740_ep, ep);
-	if (!_ep || ep->type == ep_control)
-		return -EINVAL;
-
-	spin_lock_irqsave(&ep->dev->lock, flags);
-
-	/* make sure it's actually queued on this endpoint */
-	list_for_each_entry(req, &ep->queue, queue) {
-		if (&req->req == _req)
-			break;
-	}
-	if (&req->req != _req) {
-		spin_unlock_irqrestore(&ep->dev->lock, flags);
-		return -EINVAL;
-	}
-	done(ep, req, -ECONNRESET);
-
-	spin_unlock_irqrestore(&ep->dev->lock, flags);
-	return 0;
-}
-
-/** Return bytes in EP FIFO
- *  NOTE: Sets INDEX register to EP
- */
-static int jz4740_fifo_status(struct usb_ep *_ep)
-{
-	uint32_t csr;
-	int count = 0;
-	struct jz4740_ep *ep;
-	unsigned long flags;
-
-	ep = container_of(_ep, struct jz4740_ep, ep);
-	if (!_ep) {
-		DEBUG("%s, bad ep\n", __FUNCTION__);
-		return -ENODEV;
-	}
-
-	DEBUG("%s, %d\n", __FUNCTION__, ep_index(ep));
-
-	/* LPD can't report unclaimed bytes from IN fifos */
-	if (ep_is_in(ep))
-		return -EOPNOTSUPP;
-
-	spin_lock_irqsave(&ep->dev->lock, flags);
-	jz_udc_set_index(ep->dev, ep_index(ep));
-
-	csr = usb_readb(ep->dev, ep->csr);
-	if (ep->dev->gadget.speed != USB_SPEED_UNKNOWN ||
-	    csr & 0x1) {
-		count = usb_readw(ep->dev, JZ_REG_UDC_OUTCOUNT);
-	}
-
-	spin_unlock_irqrestore(&ep->dev->lock, flags);
-
-	return count;
-}
-
-/** Flush EP FIFO
- *  NOTE: Sets INDEX register to EP
- */
-static void jz4740_fifo_flush(struct usb_ep *_ep)
-{
-	struct jz4740_ep *ep;
-	unsigned long flags;
-
-	DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	ep = container_of(_ep, struct jz4740_ep, ep);
-	if (unlikely(!_ep || (!ep->desc && ep->type == ep_control))) {
-		DEBUG("%s, bad ep\n", __FUNCTION__);
-		return;
-	}
-
-	spin_lock_irqsave(&ep->dev->lock, flags);
-
-	jz_udc_set_index(ep->dev, ep_index(ep));
-	flush(ep);
-
-	spin_unlock_irqrestore(&ep->dev->lock, flags);
-}
-
-/****************************************************************/
-/* End Point 0 related functions                                */
-/****************************************************************/
-
-/* return:  0 = still running, 1 = completed, negative = errno */
-static int write_fifo_ep0(struct jz4740_ep *ep, struct jz4740_request *req)
-{
-	uint32_t max;
-	unsigned count;
-	int is_last;
-
-    DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-	max = ep_maxpacket(ep);
-
-	count = write_packet(ep, req, max);
-
-	/* last packet is usually short (or a zlp) */
-	if (unlikely(count != max))
-		is_last = 1;
-	else {
-		if (likely(req->req.length != req->req.actual) || req->req.zero)
-			is_last = 0;
-		else
-			is_last = 1;
-	}
-
-	DEBUG_EP0("%s: wrote %s %d bytes%s %d left %p\n", __FUNCTION__,
-		  ep->ep.name, count,
-		  is_last ? "/L" : "", req->req.length - req->req.actual, req);
-
-	/* requests complete when all IN data is in the FIFO */
-	if (is_last) {
-		done(ep, req, 0);
-		return 1;
-	}
-
-	return 0;
-}
-
-static inline int jz4740_fifo_read(struct jz4740_ep *ep,
-				       unsigned char *cp, int max)
-{
-	int bytes;
-	int count = usb_readw(ep->dev, JZ_REG_UDC_OUTCOUNT);
-
-	if (count > max)
-		count = max;
-	bytes = count;
-	while (count--)
-		*cp++ = usb_readb(ep->dev, ep->fifo);
-
-	return bytes;
-}
-
-static inline void jz4740_fifo_write(struct jz4740_ep *ep,
-					 unsigned char *cp, int count)
-{
-	DEBUG("fifo_write: %d %d\n", ep_index(ep), count);
-	while (count--)
-		usb_writeb(ep->dev, ep->fifo, *cp++);
-}
-
-static int read_fifo_ep0(struct jz4740_ep *ep, struct jz4740_request *req)
-{
-	struct jz4740_udc *dev = ep->dev;
-	uint32_t csr;
-	uint8_t *buf;
-	unsigned bufferspace, count, is_short;
-
-	DEBUG_EP0("%s\n", __FUNCTION__);
-
-	csr = usb_readb(dev, JZ_REG_UDC_CSR0);
-	if (!(csr & USB_CSR0_OUTPKTRDY))
-		return 0;
-
-	buf = req->req.buf + req->req.actual;
-	prefetchw(buf);
-	bufferspace = req->req.length - req->req.actual;
-
-	/* read all bytes from this packet */
-	if (likely(csr & USB_CSR0_OUTPKTRDY)) {
-		count = usb_readw(dev, JZ_REG_UDC_OUTCOUNT);
-		req->req.actual += min(count, bufferspace);
-	} else			/* zlp */
-		count = 0;
-
-	is_short = (count < ep->ep.maxpacket);
-	DEBUG_EP0("read %s %02x, %d bytes%s req %p %d/%d\n",
-		  ep->ep.name, csr, count,
-		  is_short ? "/S" : "", req, req->req.actual, req->req.length);
-
-	while (likely(count-- != 0)) {
-		uint8_t byte = (uint8_t)usb_readl(dev, ep->fifo);
-
-		if (unlikely(bufferspace == 0)) {
-			/* this happens when the driver's buffer
-			 * is smaller than what the host sent.
-			 * discard the extra data.
-			 */
-			if (req->req.status != -EOVERFLOW)
-				DEBUG_EP0("%s overflow %d\n", ep->ep.name,
-					  count);
-			req->req.status = -EOVERFLOW;
-		} else {
-			*buf++ = byte;
-			bufferspace--;
-		}
-	}
-
-	/* completion */
-	if (is_short || req->req.actual == req->req.length) {
-		done(ep, req, 0);
-		return 1;
-	}
-
-	/* finished that packet.  the next one may be waiting... */
-	return 0;
-}
-
-/**
- * udc_set_address - set the USB address for this device
- * @address:
- *
- * Called from control endpoint function after it decodes a set address setup packet.
- */
-static void udc_set_address(struct jz4740_udc *dev, unsigned char address)
-{
-	DEBUG_EP0("%s: %d\n", __FUNCTION__, address);
-
-	dev->usb_address = address;
-	usb_writeb(dev, JZ_REG_UDC_FADDR, address);
-}
-
-/*
- * DATA_STATE_RECV (USB_CSR0_OUTPKTRDY)
- *      - if error
- *              set USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND | USB_CSR0_SENDSTALL bits
- *      - else
- *              set USB_CSR0_SVDOUTPKTRDY bit
- 				if last set USB_CSR0_DATAEND bit
- */
-static void jz4740_ep0_out(struct jz4740_udc *dev, uint32_t csr, int kickstart)
-{
-	struct jz4740_request *req;
-	struct jz4740_ep *ep = &dev->ep[0];
-	int ret;
-
-	DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
-
-	if (list_empty(&ep->queue))
-		req = 0;
-	else
-		req = list_entry(ep->queue.next, struct jz4740_request, queue);
-
-	if (req) {
-		if (req->req.length == 0) {
-			DEBUG_EP0("ZERO LENGTH OUT!\n");
-			usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));
-			dev->ep0state = WAIT_FOR_SETUP;
-			return;
-		} else if (kickstart) {
-			usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY));
-			return;
-		}
-		ret = read_fifo_ep0(ep, req);
-		if (ret) {
-			/* Done! */
-			DEBUG_EP0("%s: finished, waiting for status\n",
-				  __FUNCTION__);
-			usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));
-			dev->ep0state = WAIT_FOR_SETUP;
-		} else {
-			/* Not done yet.. */
-			DEBUG_EP0("%s: not finished\n", __FUNCTION__);
-			usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY);
-		}
-	} else {
-		DEBUG_EP0("NO REQ??!\n");
-	}
-}
-
-/*
- * DATA_STATE_XMIT
- */
-static int jz4740_ep0_in(struct jz4740_udc *dev, uint32_t csr)
-{
-	struct jz4740_request *req;
-	struct jz4740_ep *ep = &dev->ep[0];
-	int ret, need_zlp = 0;
-
-	DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
-
-	if (list_empty(&ep->queue))
-		req = 0;
-	else
-		req = list_entry(ep->queue.next, struct jz4740_request, queue);
-
-	if (!req) {
-		DEBUG_EP0("%s: NULL REQ\n", __FUNCTION__);
-		return 0;
-	}
-
-	if (req->req.length == 0) {
-		usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND));
-		dev->ep0state = WAIT_FOR_SETUP;
-		return 1;
-	}
-
-	if (req->req.length - req->req.actual == EP0_MAXPACKETSIZE) {
-		/* Next write will end with the packet size, */
-		/* so we need zero-length-packet */
-		need_zlp = 1;
-	}
-
-	ret = write_fifo_ep0(ep, req);
-
-	if (ret == 1 && !need_zlp) {
-		/* Last packet */
-		DEBUG_EP0("%s: finished, waiting for status\n", __FUNCTION__);
-
-		usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND));
-		dev->ep0state = WAIT_FOR_SETUP;
-	} else {
-		DEBUG_EP0("%s: not finished\n", __FUNCTION__);
-		usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_INPKTRDY);
-	}
-
-	if (need_zlp) {
-		DEBUG_EP0("%s: Need ZLP!\n", __FUNCTION__);
-		usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_INPKTRDY);
-		dev->ep0state = DATA_STATE_NEED_ZLP;
-	}
-
-	return 1;
-}
-
-static int jz4740_handle_get_status(struct jz4740_udc *dev,
-				    struct usb_ctrlrequest *ctrl)
-{
-	struct jz4740_ep *ep0 = &dev->ep[0];
-	struct jz4740_ep *qep;
-	int reqtype = (ctrl->bRequestType & USB_RECIP_MASK);
-	uint16_t val = 0;
-
-    DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-
-	if (reqtype == USB_RECIP_INTERFACE) {
-		/* This is not supported.
-		 * And according to the USB spec, this one does nothing..
-		 * Just return 0
-		 */
-		DEBUG_SETUP("GET_STATUS: USB_RECIP_INTERFACE\n");
-	} else if (reqtype == USB_RECIP_DEVICE) {
-		DEBUG_SETUP("GET_STATUS: USB_RECIP_DEVICE\n");
-		val |= (1 << 0);	/* Self powered */
-		/*val |= (1<<1); *//* Remote wakeup */
-	} else if (reqtype == USB_RECIP_ENDPOINT) {
-		int ep_num = (ctrl->wIndex & ~USB_DIR_IN);
-
-		DEBUG_SETUP
-			("GET_STATUS: USB_RECIP_ENDPOINT (%d), ctrl->wLength = %d\n",
-			 ep_num, ctrl->wLength);
-
-		if (ctrl->wLength > 2 || ep_num > 3)
-			return -EOPNOTSUPP;
-
-		qep = &dev->ep[ep_num];
-		if (ep_is_in(qep) != ((ctrl->wIndex & USB_DIR_IN) ? 1 : 0)
-		    && ep_index(qep) != 0) {
-			return -EOPNOTSUPP;
-		}
-
-		jz_udc_set_index(dev, ep_index(qep));
-
-		/* Return status on next IN token */
-		switch (qep->type) {
-		case ep_control:
-			val =
-			    (usb_readb(dev, qep->csr) & USB_CSR0_SENDSTALL) ==
-			    USB_CSR0_SENDSTALL;
-			break;
-		case ep_bulk_in:
-		case ep_interrupt:
-			val =
-			    (usb_readb(dev, qep->csr) & USB_INCSR_SENDSTALL) ==
-			    USB_INCSR_SENDSTALL;
-			break;
-		case ep_bulk_out:
-			val =
-			    (usb_readb(dev, qep->csr) & USB_OUTCSR_SENDSTALL) ==
-			    USB_OUTCSR_SENDSTALL;
-			break;
-		}
-
-		/* Back to EP0 index */
-		jz_udc_set_index(dev, 0);
-
-		DEBUG_SETUP("GET_STATUS, ep: %d (%x), val = %d\n", ep_num,
-			    ctrl->wIndex, val);
-	} else {
-		DEBUG_SETUP("Unknown REQ TYPE: %d\n", reqtype);
-		return -EOPNOTSUPP;
-	}
-
-	/* Clear "out packet ready" */
-	usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY);
-	/* Put status to FIFO */
-	jz4740_fifo_write(ep0, (uint8_t *)&val, sizeof(val));
-	/* Issue "In packet ready" */
-	usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND));
-
-	return 0;
-}
-
-/*
- * WAIT_FOR_SETUP (OUTPKTRDY)
- *      - read data packet from EP0 FIFO
- *      - decode command
- *      - if error
- *              set USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND | USB_CSR0_SENDSTALL bits
- *      - else
- *              set USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND bits
- */
-static void jz4740_ep0_setup(struct jz4740_udc *dev, uint32_t csr)
-{
-	struct jz4740_ep *ep = &dev->ep[0];
-	struct usb_ctrlrequest ctrl;
-	int i;
-
-	DEBUG_SETUP("%s: %x\n", __FUNCTION__, csr);
-
-	/* Nuke all previous transfers */
-	nuke(ep, -EPROTO);
-
-	/* read control req from fifo (8 bytes) */
-	jz4740_fifo_read(ep, (unsigned char *)&ctrl, 8);
-
-	DEBUG_SETUP("SETUP %02x.%02x v%04x i%04x l%04x\n",
-		    ctrl.bRequestType, ctrl.bRequest,
-		    ctrl.wValue, ctrl.wIndex, ctrl.wLength);
-
-	/* Set direction of EP0 */
-	if (likely(ctrl.bRequestType & USB_DIR_IN)) {
-		ep->bEndpointAddress |= USB_DIR_IN;
-	} else {
-		ep->bEndpointAddress &= ~USB_DIR_IN;
-	}
-
-	/* Handle some SETUP packets ourselves */
-	switch (ctrl.bRequest) {
-	case USB_REQ_SET_ADDRESS:
-		if (ctrl.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
-			break;
-
-		DEBUG_SETUP("USB_REQ_SET_ADDRESS (%d)\n", ctrl.wValue);
-		udc_set_address(dev, ctrl.wValue);
-		usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));
-		return;
-
-	case USB_REQ_SET_CONFIGURATION:
-		if (ctrl.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
-			break;
-
-		DEBUG_SETUP("USB_REQ_SET_CONFIGURATION (%d)\n", ctrl.wValue);
-/*		usb_setb(JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));*/
-
-		/* Enable RESUME and SUSPEND interrupts */
-		usb_setb(dev, JZ_REG_UDC_INTRUSBE, (USB_INTR_RESUME | USB_INTR_SUSPEND));
-		break;
-
-	case USB_REQ_SET_INTERFACE:
-		if (ctrl.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
-			break;
-
-		DEBUG_SETUP("USB_REQ_SET_INTERFACE (%d)\n", ctrl.wValue);
-/*		usb_setb(JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));*/
-		break;
-
-	case USB_REQ_GET_STATUS:
-		if (jz4740_handle_get_status(dev, &ctrl) == 0)
-			return;
-
-	case USB_REQ_CLEAR_FEATURE:
-	case USB_REQ_SET_FEATURE:
-		if (ctrl.bRequestType == USB_RECIP_ENDPOINT) {
-			struct jz4740_ep *qep;
-			int ep_num = (ctrl.wIndex & 0x0f);
-
-			/* Support only HALT feature */
-			if (ctrl.wValue != 0 || ctrl.wLength != 0
-			    || ep_num > 3 || ep_num < 1)
-				break;
-
-			qep = &dev->ep[ep_num];
-			spin_unlock(&dev->lock);
-			if (ctrl.bRequest == USB_REQ_SET_FEATURE) {
-				DEBUG_SETUP("SET_FEATURE (%d)\n",
-					    ep_num);
-				jz4740_set_halt(&qep->ep, 1);
-			} else {
-				DEBUG_SETUP("CLR_FEATURE (%d)\n",
-					    ep_num);
-				jz4740_set_halt(&qep->ep, 0);
-			}
-			spin_lock(&dev->lock);
-
-			jz_udc_set_index(dev, 0);
-
-			/* Reply with a ZLP on next IN token */
-			usb_setb(dev, JZ_REG_UDC_CSR0,
-				 (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND));
-			return;
-		}
-		break;
-
-	default:
-		break;
-	}
-
-	/* gadget drivers see class/vendor specific requests,
-	 * {SET,GET}_{INTERFACE,DESCRIPTOR,CONFIGURATION},
-	 * and more.
-	 */
-	if (dev->driver) {
-		/* device-2-host (IN) or no data setup command, process immediately */
-		spin_unlock(&dev->lock);
-
-		i = dev->driver->setup(&dev->gadget, &ctrl);
-		spin_lock(&dev->lock);
-
-		if (unlikely(i < 0)) {
-			/* setup processing failed, force stall */
-			DEBUG_SETUP
-			    ("  --> ERROR: gadget setup FAILED (stalling), setup returned %d\n",
-			     i);
-			jz_udc_set_index(dev, 0);
-			usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_SVDOUTPKTRDY | USB_CSR0_DATAEND | USB_CSR0_SENDSTALL));
-
-			/* ep->stopped = 1; */
-			dev->ep0state = WAIT_FOR_SETUP;
-		}
-		else {
-			DEBUG_SETUP("gadget driver setup ok (%d)\n", ctrl.wLength);
-/*			if (!ctrl.wLength) {
-				usb_setb(JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY);
-			}*/
-		}
-	}
-}
-
-/*
- * DATA_STATE_NEED_ZLP
- */
-static void jz4740_ep0_in_zlp(struct jz4740_udc *dev, uint32_t csr)
-{
-	DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
-
-	usb_setb(dev, JZ_REG_UDC_CSR0, (USB_CSR0_INPKTRDY | USB_CSR0_DATAEND));
-	dev->ep0state = WAIT_FOR_SETUP;
-}
-
-/*
- * handle ep0 interrupt
- */
-static void jz4740_handle_ep0(struct jz4740_udc *dev, uint32_t intr)
-{
-	struct jz4740_ep *ep = &dev->ep[0];
-	uint32_t csr;
-
-    DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-	/* Set index 0 */
-	jz_udc_set_index(dev, 0);
-	csr = usb_readb(dev, JZ_REG_UDC_CSR0);
-
-	DEBUG_EP0("%s: csr = %x  state = \n", __FUNCTION__, csr);//, state_names[dev->ep0state]);
-
-	/*
-	 * if SENT_STALL is set
-	 *      - clear the SENT_STALL bit
-	 */
-	if (csr & USB_CSR0_SENTSTALL) {
-		DEBUG_EP0("%s: USB_CSR0_SENTSTALL is set: %x\n", __FUNCTION__, csr);
-		usb_clearb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SENDSTALL | USB_CSR0_SENTSTALL);
-		nuke(ep, -ECONNABORTED);
-		dev->ep0state = WAIT_FOR_SETUP;
-		return;
-	}
-
-	/*
-	 * if a transfer is in progress && INPKTRDY and OUTPKTRDY are clear
-	 *      - fill EP0 FIFO
-	 *      - if last packet
-	 *      -       set IN_PKT_RDY | DATA_END
-	 *      - else
-	 *              set IN_PKT_RDY
-	 */
-	if (!(csr & (USB_CSR0_INPKTRDY | USB_CSR0_OUTPKTRDY))) {
-		DEBUG_EP0("%s: INPKTRDY and OUTPKTRDY are clear\n",
-			  __FUNCTION__);
-
-		switch (dev->ep0state) {
-		case DATA_STATE_XMIT:
-			DEBUG_EP0("continue with DATA_STATE_XMIT\n");
-			jz4740_ep0_in(dev, csr);
-			return;
-		case DATA_STATE_NEED_ZLP:
-			DEBUG_EP0("continue with DATA_STATE_NEED_ZLP\n");
-			jz4740_ep0_in_zlp(dev, csr);
-			return;
-		default:
-			/* Stall? */
-//			DEBUG_EP0("Odd state!! state = %s\n",
-//				  state_names[dev->ep0state]);
-			dev->ep0state = WAIT_FOR_SETUP;
-			/* nuke(ep, 0); */
-			/* usb_setb(ep->csr, USB_CSR0_SENDSTALL); */
-//			break;
-			return;
-		}
-	}
-
-	/*
-	 * if SETUPEND is set
-	 *      - abort the last transfer
-	 *      - set SERVICED_SETUP_END_BIT
-	 */
-	if (csr & USB_CSR0_SETUPEND) {
-		DEBUG_EP0("%s: USB_CSR0_SETUPEND is set: %x\n", __FUNCTION__, csr);
-
-		usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDSETUPEND);
-		nuke(ep, 0);
-		dev->ep0state = WAIT_FOR_SETUP;
-	}
-
-	/*
-	 * if USB_CSR0_OUTPKTRDY is set
-	 *      - read data packet from EP0 FIFO
-	 *      - decode command
-	 *      - if error
-	 *              set SVDOUTPKTRDY | DATAEND | SENDSTALL bits
-	 *      - else
-	 *              set SVDOUTPKTRDY | DATAEND bits
-	 */
-	if (csr & USB_CSR0_OUTPKTRDY) {
-
-		DEBUG_EP0("%s: EP0_OUT_PKT_RDY is set: %x\n", __FUNCTION__,
-			  csr);
-
-		switch (dev->ep0state) {
-		case WAIT_FOR_SETUP:
-			DEBUG_EP0("WAIT_FOR_SETUP\n");
-			jz4740_ep0_setup(dev, csr);
-			break;
-
-		case DATA_STATE_RECV:
-			DEBUG_EP0("DATA_STATE_RECV\n");
-			jz4740_ep0_out(dev, csr, 0);
-			break;
-
-		default:
-			/* send stall? */
-			DEBUG_EP0("strange state!! 2. send stall? state = %d\n",
-				  dev->ep0state);
-			break;
-		}
-	}
-}
-
-static void jz4740_ep0_kick(struct jz4740_udc *dev, struct jz4740_ep *ep)
-{
-	uint32_t csr;
-
-	jz_udc_set_index(dev, 0);
-
-	DEBUG_EP0("%s: %x\n", __FUNCTION__, csr);
-
-	/* Clear "out packet ready" */
-
-	if (ep_is_in(ep)) {
-		usb_setb(dev, JZ_REG_UDC_CSR0, USB_CSR0_SVDOUTPKTRDY);
-		csr = usb_readb(dev, JZ_REG_UDC_CSR0);
-		dev->ep0state = DATA_STATE_XMIT;
-		jz4740_ep0_in(dev, csr);
-	} else {
-		csr = usb_readb(dev, JZ_REG_UDC_CSR0);
-		dev->ep0state = DATA_STATE_RECV;
-		jz4740_ep0_out(dev, csr, 1);
-	}
-}
-
-/** Handle USB RESET interrupt
- */
-static void jz4740_reset_irq(struct jz4740_udc *dev)
-{
-	dev->gadget.speed = (usb_readb(dev, JZ_REG_UDC_POWER) & USB_POWER_HSMODE) ?
-		USB_SPEED_HIGH : USB_SPEED_FULL;
-
-	DEBUG_SETUP("%s: address = %d, speed = %s\n", __FUNCTION__, dev->usb_address,
-		    (dev->gadget.speed == USB_SPEED_HIGH) ? "HIGH":"FULL" );
-}
-
-/*
- *	jz4740 usb device interrupt handler.
- */
-static irqreturn_t jz4740_udc_irq(int irq, void *_dev)
-{
-	struct jz4740_udc *dev = _dev;
-	uint8_t index;
-
-	uint32_t intr_usb = usb_readb(dev, JZ_REG_UDC_INTRUSB) & 0x7; /* mask SOF */
-	uint32_t intr_in  = usb_readw(dev, JZ_REG_UDC_INTRIN);
-	uint32_t intr_out = usb_readw(dev, JZ_REG_UDC_INTROUT);
-	uint32_t intr_dma = usb_readb(dev, JZ_REG_UDC_INTR);
-
-	if (!intr_usb && !intr_in && !intr_out && !intr_dma)
-		return IRQ_HANDLED;
-
-
-	DEBUG("intr_out=%x intr_in=%x intr_usb=%x\n",
-	      intr_out, intr_in, intr_usb);
-
-	spin_lock(&dev->lock);
-	index = usb_readb(dev, JZ_REG_UDC_INDEX);
-
-	/* Check for resume from suspend mode */
-	if ((intr_usb & USB_INTR_RESUME) &&
-	    (usb_readb(dev, JZ_REG_UDC_INTRUSBE) & USB_INTR_RESUME)) {
-		DEBUG("USB resume\n");
-		dev->driver->resume(&dev->gadget); /* We have suspend(), so we must have resume() too. */
-	}
-
-	/* Check for system interrupts */
-	if (intr_usb & USB_INTR_RESET) {
-		DEBUG("USB reset\n");
-		jz4740_reset_irq(dev);
-	}
-
-	/* Check for endpoint 0 interrupt */
-	if (intr_in & USB_INTR_EP0) {
-		DEBUG("USB_INTR_EP0 (control)\n");
-		jz4740_handle_ep0(dev, intr_in);
-	}
-
-	/* Check for Bulk-IN DMA interrupt */
-	if (intr_dma & 0x1) {
-		int ep_num;
-		struct jz4740_ep *ep;
-		ep_num = (usb_readl(dev, JZ_REG_UDC_CNTL1) >> 4) & 0xf;
-		ep = &dev->ep[ep_num + 1];
-		jz_udc_set_index(dev, ep_num);
-		usb_setb(dev, ep->csr, USB_INCSR_INPKTRDY);
-/*		jz4740_in_epn(dev, ep_num, intr_in);*/
-	}
-
-	/* Check for Bulk-OUT DMA interrupt */
-	if (intr_dma & 0x2) {
-		int ep_num;
-		ep_num = (usb_readl(dev, JZ_REG_UDC_CNTL2) >> 4) & 0xf;
-		jz4740_out_epn(dev, ep_num, intr_out);
-	}
-
-	/* Check for each configured endpoint interrupt */
-	if (intr_in & USB_INTR_INEP1) {
-		DEBUG("USB_INTR_INEP1\n");
-		jz4740_in_epn(dev, 1, intr_in);
-	}
-
-	if (intr_in & USB_INTR_INEP2) {
-		DEBUG("USB_INTR_INEP2\n");
-		jz4740_in_epn(dev, 2, intr_in);
-	}
-
-	if (intr_out & USB_INTR_OUTEP1) {
-		DEBUG("USB_INTR_OUTEP1\n");
-		jz4740_out_epn(dev, 1, intr_out);
-	}
-
-	/* Check for suspend mode */
-	if ((intr_usb & USB_INTR_SUSPEND) &&
-	    (usb_readb(dev, JZ_REG_UDC_INTRUSBE) & USB_INTR_SUSPEND)) {
-		DEBUG("USB suspend\n");
-		dev->driver->suspend(&dev->gadget);
-		/* Host unloaded from us, can do something, such as flushing
-		 the NAND block cache etc. */
-	}
-
-    jz_udc_set_index(dev, index);
-
-	spin_unlock(&dev->lock);
-
-	return IRQ_HANDLED;
-}
-
-
-
-/*-------------------------------------------------------------------------*/
-
-/* Common functions - Added by River */
-static struct jz4740_udc udc_dev;
-
-static inline struct jz4740_udc *gadget_to_udc(struct usb_gadget *gadget)
-{
-	return container_of(gadget, struct jz4740_udc, gadget);
-}
-/* End added */
-
-static int jz4740_udc_get_frame(struct usb_gadget *_gadget)
-{
-	DEBUG("%s, %p\n", __FUNCTION__, _gadget);
-	return usb_readw(gadget_to_udc(_gadget), JZ_REG_UDC_FRAME);
-}
-
-static int jz4740_udc_wakeup(struct usb_gadget *_gadget)
-{
-	/* host may not have enabled remote wakeup */
-	/*if ((UDCCS0 & UDCCS0_DRWF) == 0)
-	   return -EHOSTUNREACH;
-	   udc_set_mask_UDCCR(UDCCR_RSM); */
-	return -ENOTSUPP;
-}
-
-static int jz4740_udc_pullup(struct usb_gadget *_gadget, int on)
-{
-	struct jz4740_udc *udc = gadget_to_udc(_gadget);
-	unsigned long flags;
-
-	local_irq_save(flags);
-
-	if (on) {
-		udc->state = UDC_STATE_ENABLE;
-		udc_enable(udc);
-	} else {
-		udc->state = UDC_STATE_DISABLE;
-		udc_disable(udc);
-	}
-
-	local_irq_restore(flags);
-
-	return 0;
-}
-
-
-static const struct usb_gadget_ops jz4740_udc_ops = {
-	.get_frame = jz4740_udc_get_frame,
-	.wakeup = jz4740_udc_wakeup,
-	.pullup = jz4740_udc_pullup,
-	/* current versions must always be self-powered */
-};
-
-static struct usb_ep_ops jz4740_ep_ops = {
-	.enable		= jz4740_ep_enable,
-	.disable	= jz4740_ep_disable,
-
-	.alloc_request	= jz4740_alloc_request,
-	.free_request	= jz4740_free_request,
-
-	.queue		= jz4740_queue,
-	.dequeue	= jz4740_dequeue,
-
-	.set_halt	= jz4740_set_halt,
-	.fifo_status	= jz4740_fifo_status,
-	.fifo_flush	= jz4740_fifo_flush,
-};
-
-
-/*-------------------------------------------------------------------------*/
-
-static struct jz4740_udc udc_dev = {
-	.usb_address = 0,
-	.gadget = {
-		.ops = &jz4740_udc_ops,
-		.ep0 = &udc_dev.ep[0].ep,
-		.name = "jz-udc",
-		.dev = {
-			.init_name = "gadget",
-		},
-	},
-
-	/* control endpoint */
-	.ep[0] = {
-		.ep = {
-			.name = "ep0",
-			.ops = &jz4740_ep_ops,
-			.maxpacket = EP0_MAXPACKETSIZE,
-		},
-		.dev = &udc_dev,
-
-		.bEndpointAddress = 0,
-		.bmAttributes = 0,
-
-		.type = ep_control,
-		.fifo = JZ_REG_UDC_EP_FIFO(0),
-		.csr = JZ_REG_UDC_CSR0,
-	},
-
-	/* bulk out endpoint */
-	.ep[1] = {
-		.ep = {
-			.name = "ep1out-bulk",
-			.ops = &jz4740_ep_ops,
-			.maxpacket = EPBULK_MAXPACKETSIZE,
-		},
-		.dev = &udc_dev,
-
-		.bEndpointAddress = 1,
-		.bmAttributes = USB_ENDPOINT_XFER_BULK,
-
-		.type = ep_bulk_out,
-		.fifo = JZ_REG_UDC_EP_FIFO(1),
-		.csr = JZ_REG_UDC_OUTCSR,
-	},
-
-	/* bulk in endpoint */
-	.ep[2] = {
-		.ep = {
-			.name = "ep1in-bulk",
-			.ops = &jz4740_ep_ops,
-			.maxpacket = EPBULK_MAXPACKETSIZE,
-		},
-		.dev = &udc_dev,
-
-		.bEndpointAddress = 1 | USB_DIR_IN,
-		.bmAttributes = USB_ENDPOINT_XFER_BULK,
-
-		.type = ep_bulk_in,
-		.fifo = JZ_REG_UDC_EP_FIFO(1),
-		.csr = JZ_REG_UDC_INCSR,
-	},
-
-	/* interrupt in endpoint */
-	.ep[3] = {
-		.ep = {
-			.name = "ep2in-int",
-			.ops = &jz4740_ep_ops,
-			.maxpacket = EPINTR_MAXPACKETSIZE,
-		},
-		.dev = &udc_dev,
-
-		.bEndpointAddress = 2 | USB_DIR_IN,
-		.bmAttributes = USB_ENDPOINT_XFER_INT,
-
-		.type = ep_interrupt,
-		.fifo = JZ_REG_UDC_EP_FIFO(2),
-		.csr = JZ_REG_UDC_INCSR,
-	},
-};
-
-static void gadget_release(struct device *_dev)
-{
-}
-
-
-static int jz4740_udc_probe(struct platform_device *pdev)
-{
-	struct jz4740_udc *dev = &udc_dev;
-	int ret;
-
-	spin_lock_init(&dev->lock);
-	the_controller = dev;
-
-	dev->dev = &pdev->dev;
-	dev_set_name(&dev->gadget.dev, "gadget");
-	dev->gadget.dev.parent = &pdev->dev;
-	dev->gadget.dev.dma_mask = pdev->dev.dma_mask;
-	dev->gadget.dev.release = gadget_release;
-
-	ret = device_register(&dev->gadget.dev);
-	if (ret)
-		return ret;
-
-	dev->clk = clk_get(&pdev->dev, "udc");
-	if (IS_ERR(dev->clk)) {
-		ret = PTR_ERR(dev->clk);
-		dev_err(&pdev->dev, "Failed to get udc clock: %d\n", ret);
-		goto err_device_unregister;
-	}
-
-	platform_set_drvdata(pdev, dev);
-
-	dev->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
-	if (!dev->mem) {
-		ret = -ENOENT;
-		dev_err(&pdev->dev, "Failed to get mmio memory resource\n");
-		goto err_clk_put;
-	}
-
-	dev->mem = request_mem_region(dev->mem->start, resource_size(dev->mem), pdev->name);
-
-	if (!dev->mem) {
-		ret = -EBUSY;
-		dev_err(&pdev->dev, "Failed to request mmio memory region\n");
-		goto err_device_unregister;
-	}
-
-	dev->base = ioremap(dev->mem->start, resource_size(dev->mem));
-
-	if (!dev->base) {
-		ret = -EBUSY;
-		dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
-		goto err_release_mem_region;
-	}
-
-	dev->irq = platform_get_irq(pdev, 0);
-
-	ret = request_irq(dev->irq, jz4740_udc_irq, IRQF_DISABLED,
-                            pdev->name, dev);
-        if (ret) {
-                dev_err(&pdev->dev, "Failed to request irq: %d\n", ret);
-                goto err_iounmap;
-	}
-
-	udc_disable(dev);
-	udc_reinit(dev);
-
-	return 0;
-
-err_iounmap:
-	iounmap(dev->base);
-err_release_mem_region:
-	release_mem_region(dev->mem->start, resource_size(dev->mem));
-err_clk_put:
-	clk_put(dev->clk);
-err_device_unregister:
-	device_unregister(&dev->gadget.dev);
-	platform_set_drvdata(pdev, NULL);
-
-	the_controller = 0;
-
-        return ret;
-}
-
-static int jz4740_udc_remove(struct platform_device *pdev)
-{
-	struct jz4740_udc *dev = platform_get_drvdata(pdev);
-
-	if (dev->driver)
-		return -EBUSY;
-
-	udc_disable(dev);
-
-	free_irq(dev->irq, dev);
-	iounmap(dev->base);
-	release_mem_region(dev->mem->start, resource_size(dev->mem));
-	clk_put(dev->clk);
-
-	platform_set_drvdata(pdev, NULL);
-	device_unregister(&dev->gadget.dev);
-	the_controller = NULL;
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-
-static int jz4740_udc_suspend(struct device *dev)
-{
-	struct jz4740_udc *udc = dev_get_drvdata(dev);
-
-	if (udc->state == UDC_STATE_ENABLE)
-		udc_disable(udc);
-
-	return 0;
-}
-
-static int jz4740_udc_resume(struct device *dev)
-{
-	struct jz4740_udc *udc = dev_get_drvdata(dev);
-
-	if (udc->state == UDC_STATE_ENABLE)
-		udc_enable(udc);
-
-	return 0;
-}
-
-static struct dev_pm_ops jz4740_udc_pm_ops = {
-	.suspend = jz4740_udc_suspend,
-	.resume = jz4740_udc_resume,
-};
-
-#define JZ4740_UDC_PM_OPS (&jz4740_udc_pm_ops)
-
-#else
-
-#define JZ4740_UDC_PM_OPS NULL
-
-#endif
-
-static struct platform_driver udc_driver = {
-	.probe		= jz4740_udc_probe,
-	.remove		= jz4740_udc_remove,
-	.driver		= {
-		.name	= "jz-udc",
-		.owner	= THIS_MODULE,
-		.pm		= JZ4740_UDC_PM_OPS,
-	},
-};
-
-/*-------------------------------------------------------------------------*/
-
-static int __init udc_init (void)
-{
-	return platform_driver_register(&udc_driver);
-}
-module_init(udc_init);
-
-static void __exit udc_exit (void)
-{
-	platform_driver_unregister(&udc_driver);
-}
-module_exit(udc_exit);
-
-MODULE_DESCRIPTION("JZ4740 USB Device Controller");
-MODULE_AUTHOR("Wei Jianli <jlwei@ingenic.cn>");
-MODULE_LICENSE("GPL");
diff --git a/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.h b/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.h
deleted file mode 100644
index ac1540f05f..0000000000
--- a/target/linux/xburst/files-2.6.32/drivers/usb/gadget/jz4740_udc.h
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
- * linux/drivers/usb/gadget/jz4740_udc.h
- *
- * Ingenic JZ4740 on-chip high speed USB device controller
- *
- * Copyright (C) 2006 Ingenic Semiconductor Inc.
- * Author: <jlwei@ingenic.cn>
- *
- * 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.
- */
-
-#ifndef __USB_GADGET_JZ4740_H__
-#define __USB_GADGET_JZ4740_H__
-
-/*-------------------------------------------------------------------------*/
-
-// Max packet size
-#define EP0_MAXPACKETSIZE  	64
-#define EPBULK_MAXPACKETSIZE  	512
-#define EPINTR_MAXPACKETSIZE  	64
-
-#define UDC_MAX_ENDPOINTS       4
-
-/*-------------------------------------------------------------------------*/
-
-typedef enum ep_type {
-	ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt
-} ep_type_t;
-
-struct jz4740_ep {
-	struct usb_ep ep;
-	struct jz4740_udc *dev;
-
-	const struct usb_endpoint_descriptor *desc;
-	unsigned long pio_irqs;
-
-	uint8_t stopped;
-	uint8_t bEndpointAddress;
-	uint8_t bmAttributes;
-
-	ep_type_t type;
-	size_t fifo;
-	u32 csr;
-
-	uint32_t reg_addr;
-	struct list_head queue;
-};
-
-struct jz4740_request {
-	struct usb_request req;
-	struct list_head queue;
-};
-
-enum ep0state {
-	WAIT_FOR_SETUP,		/* between STATUS ack and SETUP report */
-	DATA_STATE_XMIT, 	/* data tx stage */
-	DATA_STATE_NEED_ZLP,	/* data tx zlp stage */
-	WAIT_FOR_OUT_STATUS,	/* status stages */
-	DATA_STATE_RECV,	/* data rx stage */
-};
-
-/* For function binding with UDC Disable - Added by River */
-typedef enum {
-	UDC_STATE_ENABLE = 0,
-	UDC_STATE_DISABLE,
-}udc_state_t;
-
-struct jz4740_udc {
-	struct usb_gadget gadget;
-	struct usb_gadget_driver *driver;
-	struct device *dev;
-	spinlock_t lock;
-
-	enum ep0state ep0state;
-	struct jz4740_ep ep[UDC_MAX_ENDPOINTS];
-
-	unsigned char usb_address;
-	
-	udc_state_t state;
-
-	struct resource *mem;
-	void __iomem *base;
-	int irq;
-	uint32_t in_mask;
-	uint32_t out_mask;
-
-	struct clk *clk;
-};
-
-extern struct jz4740_udc *the_controller;
-
-#define ep_is_in(EP) 		(((EP)->bEndpointAddress&USB_DIR_IN)==USB_DIR_IN)
-#define ep_maxpacket(EP) 	((EP)->ep.maxpacket)
-#define ep_index(EP) 		((EP)->bEndpointAddress&0xF)
-
-#endif /* __USB_GADGET_JZ4740_H__ */