ralink: set v3.10 as default

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37497 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 0 insertions, 3012 deletions

diff --git a/target/linux/ramips/patches-3.9/0162-USB-MIPS-ralink-add-rt5350-mt7620-UDC.patch b/target/linux/ramips/patches-3.9/0162-USB-MIPS-ralink-add-rt5350-mt7620-UDC.patch
deleted file mode 100644
index 1fdd48c508..0000000000
--- a/target/linux/ramips/patches-3.9/0162-USB-MIPS-ralink-add-rt5350-mt7620-UDC.patch
+++ /dev/null
@@ -1,3012 +0,0 @@
-From 0e3b1bffd1974e6852912865a7cea481617b1c39 Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Thu, 30 May 2013 16:06:35 +0200
-Subject: [PATCH 162/164] USB: MIPS: ralink: add rt5350/mt7620 UDC
-
-Signed-off-by: John Crispin <blogic@openwrt.org>
----
- drivers/usb/gadget/Kconfig       |    8 +
- drivers/usb/gadget/Makefile      |    1 +
- drivers/usb/gadget/rt_udc.h      |  417 +++++++
- drivers/usb/gadget/rt_udc_pdma.c | 2547 ++++++++++++++++++++++++++++++++++++++
- 4 files changed, 2973 insertions(+)
- create mode 100644 drivers/usb/gadget/rt_udc.h
- create mode 100644 drivers/usb/gadget/rt_udc_pdma.c
-
---- a/drivers/usb/gadget/Kconfig
-+++ b/drivers/usb/gadget/Kconfig
-@@ -336,6 +336,14 @@ config USB_MV_U3D
- 	  MARVELL PXA2128 Processor series include a super speed USB3.0 device
- 	  controller, which support super speed USB peripheral.
- 
-+config USB_RT_UDC
-+	boolean "Ralink USB Device Port"
-+	depends on SOC_MT7620
-+	help
-+	  Say "y" to link the driver statically, or "m" to build a
-+	  dynamically linked module called "rt_udc" and force all
-+	  gadget drivers to also be dynamically linked.
-+
- #
- # Controllers available in both integrated and discrete versions
- #
---- a/drivers/usb/gadget/Makefile
-+++ b/drivers/usb/gadget/Makefile
-@@ -34,6 +34,7 @@ obj-$(CONFIG_USB_MV_UDC)	+= mv_udc.o
- mv_udc-y			:= mv_udc_core.o
- obj-$(CONFIG_USB_FUSB300)	+= fusb300_udc.o
- obj-$(CONFIG_USB_MV_U3D)	+= mv_u3d_core.o
-+obj-$(CONFIG_USB_RT_UDC)	+= rt_udc_pdma.o
- 
- # USB Functions
- obj-$(CONFIG_USB_F_ACM)		+= f_acm.o
---- /dev/null
-+++ b/drivers/usb/gadget/rt_udc.h
-@@ -0,0 +1,417 @@
-+/*
-+ *	Copyright (C) 2009 Y.Y. Huang, Ralink Tech.(yy_huang@ralinktech.com)
-+ *
-+ *	This udc driver is now under testing and code is based on pxa2xx_udc.h
-+ *	Please use it with your own risk!
-+ *
-+ *	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 program is distributed in the hope that it will be useful,
-+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ *	GNU General Public License for more details.
-+ */
-+
-+#ifndef __LINUX_USB_GADGET_RT_UDC_H
-+#define __LINUX_USB_GADGET_RT_UDC_H
-+
-+#define CONFIG_RALINK_MT7620
-+
-+#include <linux/types.h>
-+
-+//#include "../host/ralink_usb.h" 	/* for port sharing setting and power saving purpose */
-+
-+#if defined (CONFIG_RALINK_RT3883) || defined (CONFIG_RALINK_RT3352) || defined (CONFIG_RALINK_MT7620)
-+#define IN_EP_NUM		2
-+#define OUT_EP_NUM		2
-+#elif defined (CONFIG_RALINK_RT5350)
-+#define IN_EP_NUM		1
-+#define OUT_EP_NUM		1
-+#else
-+#error "Please define a platform."
-+#endif
-+
-+/* Helper macros */
-+#define EP_IDX(ep)		((ep->bEndpointAddress & ~USB_DIR_IN)+(EP_DIR(ep)? 0:IN_EP_NUM)) /* IN:1, OUT:0 */
-+#define EP_NO(ep)		((ep->bEndpointAddress & ~USB_DIR_IN)) 							/* IN:1, OUT:0 */
-+#define EP_DIR(ep)		((ep->bEndpointAddress) & USB_DIR_IN ? 1 : 0)
-+#define EP_IN			1
-+#define EP_OUT			0
-+#define RT_USB_NB_EP	(IN_EP_NUM + OUT_EP_NUM + 1)
-+
-+/* Driver structures */
-+struct rt_request {
-+	struct usb_request			req;
-+	struct list_head			queue;
-+	unsigned int				in_use;
-+	struct rt_ep_struct			*rt_ep;			// test for rx tasklet
-+	int					zlp_dma_done;		// used for DMA ZLP packet.
-+	int					txd_count;
-+};
-+
-+enum ep0_state {
-+	EP0_IDLE,
-+	EP0_IN_DATA_PHASE,
-+	EP0_OUT_DATA_PHASE,
-+	EP0_NO_DATA_PHASE,
-+	EP0_STALL,
-+};
-+
-+struct rt_ep_struct {
-+	struct usb_ep				ep;
-+	struct rt_udc_struct		*rt_usb;
-+	struct list_head			queue;
-+	unsigned char				stopped;
-+	unsigned char				bEndpointAddress;
-+	unsigned char				bmAttributes;
-+
-+	unsigned char				pending;
-+	unsigned int				rx_done_count;	/* used by OUT EP only */
-+	unsigned int				tx_done_count;	/* used by OUT EP only */
-+};
-+
-+struct rt_udc_struct {
-+	struct usb_gadget			gadget;
-+	struct usb_gadget_driver	*driver;
-+	struct device				*dev;
-+	struct rt_ep_struct			rt_ep[RT_USB_NB_EP];
-+	/* struct clk				*clk; */
-+	struct timer_list			timer;
-+	enum ep0_state				ep0state;
-+	struct resource				*res;
-+	void __iomem				*base;
-+	unsigned char				set_config;
-+	int					cfg,
-+						intf,
-+						alt,
-+						interrupt;
-+};
-+
-+#define USB_BASE		(0xB0120000)
-+
-+#define OUT0BC			(0x000)
-+#define IN0BC			(0x001)
-+#define EP0CS			(0x002)
-+
-+#define OUT1CON			(0x00A)
-+#define IN1CON			(0x00E)
-+#define OUT2CON			(0x012)
-+#define IN2CON			(0x016)
-+#define OUT3CON			(0x01A)
-+#define IN3CON			(0x01E)
-+#define OUT4CON			(0x022)
-+#define IN4CON			(0x026)
-+
-+
-+#define EP0INDAT		(0x100)
-+#define EP0OUTDAT		(0x140)
-+#define SETUPDATA		(0x180)
-+
-+#define IN07IRQ			(0x188)
-+#define IN815IRQ		(0x189)
-+#define OUT07IRQ		(0x18A)
-+#define OUT815IRQ		(0x18B)
-+#define USBIRQ			(0x18C)
-+#define OUT07PNGIRQ		(0x18E)
-+#define OUT815PNGIRQ	(0x18F)
-+
-+#define IN07IEN			(0x194)
-+#define OUT07IEN		(0x196)
-+#define USBIEN			(0x198)
-+
-+#define OUT07PNGIEN		(0x19A)
-+#define OUT815PNGIEN	(0x19B)
-+
-+#define ENDPRST			(0x1A2)
-+#define ENDPRST_IO		(0x1 << 4)
-+#define ENDPRST_TOGRST	(0x1 << 5)
-+#define ENDPRST_FIFORST	(0x1 << 6)
-+
-+#define FIFOCTRL		(0x1A8)
-+
-+#define EP_CS_EP0_STALL		(0x1 << 0)
-+#define EP_CS_EP0_HSNAK		(0x1 << 1)
-+#define EP_CS_EP0_INBSY		(0x1 << 2)
-+#define EP_CS_EP0_OUTBSY	(0x1 << 3)
-+#define EP_CS_AUTO		(0x1 << 4)
-+#define EP_CS_NPAK1		(0x1 << 3)
-+#define EP_CS_NPAK0		(0x1 << 2)
-+#define EP_CS_BSY		(0x1 << 1)
-+#define EP_CS_ERR		(0x1 << 0)
-+
-+#define EP0_OUT_BSY		(0x1 << 3)
-+#define EP0_IN_BSY		(0x1 << 2)
-+
-+#define USB_INTR_HSPEED				(0x20)
-+#define USB_INTR_RESET				(0x10)
-+#define USB_INTR_SUSPEND			(0x08)
-+#define USB_INTR_SETUP_TOKEN		(0x04)
-+#define USB_INTR_SOF				(0x02)
-+#define USB_INTR_SETUP_TOKEN_VALID	(0x01)
-+
-+/* UDMA */
-+#define RTUSB_UDMA_CTRL				(USB_BASE + 0x800)
-+#define RTUSB_UDMA_WRR				(USB_BASE + 0x804)
-+
-+/* PDMA */
-+#define RTUSB_TX_BASE_PTR0        (USB_BASE + 0x1000)
-+#define RTUSB_TX_MAX_CNT0         (USB_BASE + 0x1004)
-+#define RTUSB_TX_CTX_IDX0         (USB_BASE + 0x1008)
-+#define RTUSB_TX_DTX_IDX0         (USB_BASE + 0x100C)
-+#define RTUSB_TX_BASE_PTR1        (USB_BASE + 0x1010)
-+#define RTUSB_TX_MAX_CNT1         (USB_BASE + 0x1014)
-+#define RTUSB_TX_CTX_IDX1         (USB_BASE + 0x1018)
-+#define RTUSB_TX_DTX_IDX1         (USB_BASE + 0x101C)
-+#define RTUSB_RX_BASE_PTR0        (USB_BASE + 0x1100)
-+#define RTUSB_RX_MAX_CNT0         (USB_BASE + 0x1104)
-+#define RTUSB_RX_CALC_IDX0        (USB_BASE + 0x1108)
-+#define RTUSB_RX_DRX_IDX0         (USB_BASE + 0x110C)
-+#define RTUSB_PDMA_GLO_CFG        (USB_BASE + 0x1204)
-+
-+#define RTUSB_TX_WB_DDONE			(0x1 << 6)
-+#define RTUSB_RX_DMA_BUSY			(0x1 << 3)
-+#define RTUSB_RX_DMA_EN				(0x1 << 2)
-+#define RTUSB_TX_DMA_BUSY			(0x1 << 1)
-+#define RTUSB_TX_DMA_EN				(0x1 << 0)
-+
-+#define RTUSB_PDMA_RST_IDX        (USB_BASE + 0x1208)
-+
-+#define RTUSB_RST_DRX_IDX1			(0x1 << 17)
-+#define RTUSB_RST_DRX_IDX0			(0x1 << 16)
-+#define RTUSB_RST_DTX_IDX3			(0x1 << 3)
-+#define RTUSB_RST_DTX_IDX2			(0x1 << 2)
-+#define RTUSB_RST_DTX_IDX1			(0x1 << 1)
-+#define RTUSB_RST_DTX_IDX0			(0x1 << 0)
-+
-+#define RTUSB_DELAY_INT_CFG       (USB_BASE + 0x120C)
-+#define RTUSB_INT_STATUS		  (USB_BASE + 0x1220)
-+#define RTUSB_RX_DONE_INT1			(0x1 << 17)
-+#define RTUSB_RX_DONE_INT0			(0x1 << 16)
-+#define RTUSB_TX_DONE_INT3			(0x1 << 3)
-+#define RTUSB_TX_DONE_INT2			(0x1 << 2)
-+#define RTUSB_TX_DONE_INT1			(0x1 << 1)
-+#define RTUSB_TX_DONE_INT0			(0x1 << 0)
-+
-+#define RTUSB_INT_MASK			  (USB_BASE + 0x1228)
-+#define RTUSB_RX_DONE_INT_MSK1		(0x1 << 17)
-+#define RTUSB_RX_DONE_INT_MSK0		(0x1 << 16)
-+#define RTUSB_TX_DONE_INT_MSK3		(0x1 << 3)
-+#define RTUSB_TX_DONE_INT_MSK2		(0x1 << 2)
-+#define RTUSB_TX_DONE_INT_MSK1		(0x1 << 1)
-+#define RTUSB_TX_DONE_INT_MSK0		(0x1 << 0)
-+
-+
-+/*=========================================
-+      PDMA RX Descriptor Format define
-+=========================================*/
-+//-------------------------------------------------
-+typedef struct _PDMA_RXD_INFO1_  PDMA_RXD_INFO1_T;
-+
-+struct _PDMA_RXD_INFO1_ {
-+    unsigned int    PDP0;
-+};
-+//-------------------------------------------------
-+typedef struct _PDMA_RXD_INFO2_    PDMA_RXD_INFO2_T;
-+
-+struct _PDMA_RXD_INFO2_ {
-+    unsigned int    PLEN1                 : 14;
-+    unsigned int    LS1                   : 1;
-+    unsigned int    UN_USED               : 1;
-+    unsigned int    PLEN0                 : 14;
-+    unsigned int    LS0                   : 1;
-+    unsigned int    DDONE_bit             : 1;
-+};
-+//-------------------------------------------------
-+typedef struct _PDMA_RXD_INFO3_  PDMA_RXD_INFO3_T;
-+
-+struct _PDMA_RXD_INFO3_ {
-+    unsigned int    PDP1;
-+};
-+//-------------------------------------------------
-+typedef struct _PDMA_RXD_INFO4_    PDMA_RXD_INFO4_T;
-+
-+struct _PDMA_RXD_INFO4_ {
-+    unsigned int        Rx_bcnt:16;
-+    unsigned int        Reserved1:8;
-+    unsigned int        Out_ep_addr:4;
-+    unsigned int        Reserved0:4;
-+};
-+struct PDMA_rxdesc {
-+    PDMA_RXD_INFO1_T rxd_info1;
-+    PDMA_RXD_INFO2_T rxd_info2;
-+    PDMA_RXD_INFO3_T rxd_info3;
-+    PDMA_RXD_INFO4_T rxd_info4;
-+};
-+/*=========================================
-+      PDMA TX Descriptor Format define
-+=========================================*/
-+//-------------------------------------------------
-+typedef struct _PDMA_TXD_INFO1_  PDMA_TXD_INFO1_T;
-+
-+struct _PDMA_TXD_INFO1_ {
-+    unsigned int    SDP0;
-+};
-+//-------------------------------------------------
-+typedef struct _PDMA_TXD_INFO2_    PDMA_TXD_INFO2_T;
-+
-+struct _PDMA_TXD_INFO2_ {
-+    unsigned int    SDL1                  : 14;
-+    unsigned int    LS1_bit               : 1;
-+    unsigned int    BURST_bit             : 1;
-+    unsigned int    SDL0                  : 14;
-+    unsigned int    LS0_bit               : 1;
-+    unsigned int    DDONE_bit             : 1;
-+};
-+//-------------------------------------------------
-+typedef struct _PDMA_TXD_INFO3_  PDMA_TXD_INFO3_T;
-+
-+struct _PDMA_TXD_INFO3_ {
-+    unsigned int    SDP1;
-+};
-+//-------------------------------------------------
-+typedef struct _PDMA_TXD_INFO4_    PDMA_TXD_INFO4_T;
-+struct _PDMA_TXD_INFO4_ {
-+    unsigned int        reserved2:17;
-+    unsigned int        zlp_flag:1;
-+    unsigned int        reserved1:6;
-+    unsigned int        In_ep_addr:4;
-+    unsigned int        rsv:4;
-+};
-+
-+struct PDMA_txdesc {
-+    PDMA_TXD_INFO1_T txd_info1;
-+    PDMA_TXD_INFO2_T txd_info2;
-+    PDMA_TXD_INFO3_T txd_info3;
-+    PDMA_TXD_INFO4_T txd_info4;
-+};
-+
-+
-+#ifdef DEBUG
-+#define DBG do{ if(debuglevel) printk("%s()\n", __FUNCTION__); }while(0);
-+#define DD	do{ printk("%s: %s %d\n", driver_name, __FUNCTION__, __LINE__); } while(0);
-+#define xprintk(fmt, args...)	do{ if(debuglevel) printk(fmt, ## args); } while(0);
-+#else
-+#define DBG
-+#define DD
-+#define xprintk(fmt, args...)
-+#endif
-+
-+#define FATAL_ERROR(fmt, args...)	do{ printk(fmt, ## args); printk("\n###############  ERROR  #####################\n %s %d\n###############  ERROR  #####################\n",  __FUNCTION__, __LINE__);  BUG(); } while(0)
-+
-+static void inline dump_usbirq(u32 irqreg)
-+{
-+	if(irqreg)
-+		xprintk("U%s%s%s%s%s%s\n", 
-+			(irqreg & USB_INTR_SOF) ? "sof" : "",
-+			(irqreg & USB_INTR_RESET) ? " rst" : "",
-+			(irqreg & USB_INTR_SUSPEND) ? " sus" : "",
-+			(irqreg & USB_INTR_SETUP_TOKEN) ? "st" : "",
-+			(irqreg & USB_INTR_SETUP_TOKEN_VALID) ? "sv" : "",
-+			(irqreg & USB_INTR_HSPEED) ? " HS" : "");
-+
-+//  if(irqreg & USB_INTR_SETUP_TOKEN)
-+//  	printk("ST\n");
-+//  if(irqreg & USB_INTR_SETUP_TOKEN_VALID)
-+//  	printk("SV\n");
-+
-+}
-+
-+static void inline dump_epirq(u32 irqreg, u32 ienreg, int dir)
-+{
-+	if(irqreg)
-+	xprintk("%s%x\n", dir? "I" : "O", irqreg);
-+}
-+
-+static __inline__ u32 usb_read(u32 addr)
-+{
-+	return ioread32( (void __iomem *)(USB_BASE + (addr << 2)) );
-+}
-+
-+static __inline__ void usb_write(u32 addr, u32 value)
-+{
-+	iowrite32(value, (void __iomem *)(USB_BASE + (addr << 2)) );
-+}
-+
-+static __inline__ void reg_write(u32 addr, u32 value)
-+{
-+	iowrite32(value, (void __iomem *)0x0 + addr);
-+}
-+
-+static __inline__ u32 reg_read(u32 addr)
-+{
-+	return ioread32( (void __iomem *)0x0 + addr);
-+}
-+
-+
-+static void handle_pending_epoutirq(struct rt_udc_struct *rt_usb, struct rt_ep_struct *rt_ep, struct rt_request *req);
-+
-+/* Debug macros */
-+#ifdef DEBUG
-+#define DEBUG_REQ
-+#define DEBUG_TRX
-+#define DEBUG_INIT
-+#define DEBUG_EP0
-+#define DEBUG_EPX
-+#define DEBUG_ERR
-+
-+#ifdef DEBUG_REQ
-+	#define D_REQ(dev, args...)	printk(args)
-+#else
-+	#define D_REQ(dev, args...)	do {} while (0)
-+#endif /* DEBUG_REQ */
-+
-+#ifdef DEBUG_TRX
-+	#define D_TRX(dev, args...)	printk(args)
-+#else
-+	#define D_TRX(dev, args...)	do {} while (0)
-+#endif /* DEBUG_TRX */
-+
-+#ifdef DEBUG_INIT
-+	#define D_INI(dev, args...)	printk(args)
-+#else
-+	#define D_INI(dev, args...)	do {} while (0)
-+#endif /* DEBUG_INIT */
-+
-+#ifdef DEBUG_EP0
-+	static const char *state_name[] = {
-+		"IDLE",
-+		"IN",
-+		"OUT",
-+		"NODATA",
-+		"STALL"
-+	};
-+	#define D_EP0(dev, args...) printk(args)
-+#else
-+	#define D_EP0(dev, args...)	do {} while (0)
-+#endif /* DEBUG_EP0 */
-+
-+#ifdef DEBUG_EPX
-+	#define D_EPX(dev, args...)	printk(args)
-+#else
-+	#define D_EPX(dev, args...)	do {} while (0)
-+#endif /* DEBUG_EP0 */
-+
-+#ifdef DEBUG_ERR
-+	#define D_ERR(dev, args...)	printk(args)
-+#else
-+	#define D_ERR(dev, args...)	do {} while (0)
-+#endif
-+
-+#else
-+	#define D_REQ(dev, args...)		do {} while (0)
-+	#define D_TRX(dev, args...)		do {} while (0)
-+	#define D_INI(dev, args...)		do {} while (0)
-+	#define D_EP0(dev, args...)		do {} while (0)
-+	#define D_EPX(dev, args...)		do {} while (0)
-+	#define dump_ep_intr(x, y, z, i)	do {} while (0)
-+	#define dump_intr(x, y, z)		do {} while (0)
-+	#define dump_ep_stat(x, y)		do {} while (0)
-+	#define dump_usb_stat(x, y)		do {} while (0)
-+	#define dump_req(x, y, z)		do {} while (0)
-+	#define D_ERR(dev, args...)		do {} while (0)
-+#endif /* DEBUG */
-+
-+#endif /* __LINUX_USB_GADGET_RT_UDC_H */
---- /dev/null
-+++ b/drivers/usb/gadget/rt_udc_pdma.c
-@@ -0,0 +1,2547 @@
-+/*
-+ *	driver/usb/gadget/rt_udc.c
-+ *
-+ *	Copyright (C) 2009 Ying Yuan Huang, Ralink Tech. <yyhuang@ralink_tech.com>
-+ *
-+ *	This program is free software; you can redistribute it and/or modify
-+ *	it under the terms of the GNU General Public License as published by
-+ *	the Free Software Foundation; either version 2 of the License, or
-+ *	(at your option) any later version.
-+ *
-+ *	This program is distributed in the hope that it will be useful,
-+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ *	GNU General Public License for more details.
-+ */
-+
-+/*
-+ *  1) [ USB composite device ]. The USB PDMA architecture is not suitable for USB composite
-+ *     device support. A passive gadget driver(device) may slow down or block other gadget
-+ *     (device) because they are in the same ring.
-+ */
-+#include <linux/init.h>
-+#include <linux/kernel.h>
-+#include <linux/platform_device.h>
-+#include <linux/module.h>
-+#include <linux/errno.h>
-+#include <linux/list.h>
-+#include <linux/interrupt.h>
-+#include <linux/io.h>
-+#include <linux/irq.h>
-+#include <linux/device.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/clk.h>
-+#include <linux/delay.h>
-+#include <linux/timer.h>
-+#include <linux/proc_fs.h>
-+#include <linux/usb/ch9.h>
-+#include <linux/version.h>
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36)
-+#include <linux/usb_gadget.h>
-+#else
-+#include <linux/usb/gadget.h>
-+#endif
-+
-+static const char driver_name[] = "rt_udc";
-+static const char ep0name[] = "ep0";
-+static unsigned debuglevel = 0;
-+module_param (debuglevel, uint, S_IRUGO);
-+
-+#define DEBUG
-+#include "rt_udc.h"
-+
-+#define PROC_DIR				driver_name
-+#define DEBUGLEVEL_PROCFILE		"debuglevel"
-+static struct proc_dir_entry *pProcDir   = NULL;
-+static struct proc_dir_entry *pProcDebugLevel = NULL;
-+
-+/*
-+ * USB PDMA related
-+ */
-+#define NUM_RX_DESC     256
-+#define NUM_TX_DESC     256
-+#define RX_BUFF_SZ      1600			/* 1536 */
-+#define RING_RESET_TIMEOUT  3000                    /* 3 secs */
-+#define RX_RESCHEDULE   64
-+#define TX_RESCHEDULE   4
-+static unsigned dma = 0;
-+module_param (dma, uint, S_IRUGO);
-+static unsigned sm = 0;
-+module_param (sm, uint, S_IRUGO);
-+static unsigned int TXMAXCAP = 512;
-+module_param (TXMAXCAP, uint, S_IRUGO);
-+
-+static struct PDMA_txdesc *tx_ring0_cache = NULL;
-+static struct PDMA_rxdesc *rx_ring0_cache = NULL;
-+static volatile struct PDMA_rxdesc *rx_ring0_noncache = NULL;
-+static volatile struct PDMA_txdesc *tx_ring0_noncache = NULL;
-+static dma_addr_t tx_ring_bus_addr;
-+static dma_addr_t rx_ring_bus_addr;
-+
-+static int rx_dma_owner_idx0;                             /* Point to the next RXD DMA wants to use in RXD Ring#0.  */
-+static int tx_cpu_owner_idx0;
-+static int tx_need_free_idx0;
-+
-+static volatile unsigned char *USBRxPackets[NUM_RX_DESC];           /* Receive packets */
-+static unsigned char tx_zlp_dummy_buf[8];
-+struct tasklet_struct rx_dma_tasklet;
-+struct tasklet_struct tx_dma_tasklet;
-+
-+static struct rt_udc_struct controller;
-+static struct rt_request *handle_outep(struct rt_ep_struct *rt_ep);
-+
-+static int debuglevel_read(char *page, char **start, off_t off,int count, int *eof, void *data)
-+{
-+	int len;
-+	sprintf(page, "%d\n", debuglevel);
-+	len = strlen(page) + 1;
-+	*eof = 1;
-+	return len;
-+}
-+
-+static int debuglevel_write(struct file *file, const char *buffer, unsigned long count, void *data)
-+{
-+	char tmp[32];
-+	count = (count > 32) ? 32 : count;
-+	memset(tmp, 0, 32);
-+	if (copy_from_user(tmp, buffer, count))
-+		return -EFAULT;
-+	debuglevel = simple_strtol(tmp, 0, 10);
-+	return count;
-+}
-+
-+static void ep0_chg_stat(const char *label, struct rt_udc_struct *rt_usb, enum ep0_state stat)
-+{
-+	xprintk("<0st>%s->%s\n", state_name[rt_usb->ep0state], state_name[stat]);
-+
-+	if (rt_usb->ep0state == stat)
-+		return;
-+	rt_usb->ep0state = stat;
-+}
-+
-+static u8 read_epcs(struct rt_ep_struct *rt_ep)
-+{
-+	int idx = EP_NO(rt_ep);
-+	int dir = EP_DIR(rt_ep);
-+
-+	if(idx == 0)
-+		return usb_read(EP0CS);
-+
-+	return (dir == EP_IN ? usb_read(0x7 + idx*8) : usb_read(0x3 + idx*8) );
-+}
-+
-+static void write_epcs(struct rt_ep_struct *rt_ep, u8 val)
-+{
-+	int idx = EP_NO(rt_ep);
-+	int dir = EP_DIR(rt_ep);
-+
-+	if(idx == 0)
-+		usb_write(EP0CS, val);
-+	else
-+		(dir == EP_IN ? /*IN */ usb_write(0x7 + idx*8, val) : usb_write(0x3 + idx*8, val) );
-+}
-+
-+static u16 read_inbc(int epnum)
-+{
-+	u16 low, high = 0;
-+	if(epnum == 0){ /* EP0 */
-+		low = usb_read(IN0BC);
-+	}else{
-+		low = usb_read(epnum * 8 + 4);
-+		high = usb_read((epnum * 8 + 4)+1);
-+	}
-+	return (low | (high << 8));
-+}
-+
-+static u16 read_outbc(int epnum)
-+{
-+	u16 low, high = 0;
-+	if(epnum == 0){ /* EP0 */
-+		low = usb_read(OUT0BC);
-+	}else{
-+		low = usb_read(epnum * 8);
-+		high = usb_read((epnum * 8)+1);
-+	}
-+	return (low | (high << 8));
-+}
-+
-+
-+static void rt_all_eps_reset(void)
-+{
-+	// reset(toggle & fifo) all 16 IN & 16 OUT endpoints
-+	usb_write(ENDPRST, 0x10);
-+	usb_write(ENDPRST, 0x70);
-+	usb_write(ENDPRST, 0x00);
-+	usb_write(ENDPRST, 0x60);
-+}
-+
-+static void rt_ep_rst(struct rt_ep_struct *rt_ep)
-+{
-+	u8 reg = 0;
-+	u8 idx = EP_NO(rt_ep);
-+	u8 dir = EP_DIR(rt_ep);
-+	if(dir == EP_IN )
-+		reg |= ENDPRST_IO | idx;
-+	usb_write(ENDPRST, reg);
-+
-+	reg |= ENDPRST_TOGRST | ENDPRST_FIFORST;
-+	usb_write(ENDPRST, reg);	        
-+}
-+
-+static void rt_ep_irq_enable(struct rt_ep_struct *rt_ep)
-+{
-+	u8 reg;
-+	u8 idx = EP_NO(rt_ep);
-+	u8 dir = EP_DIR(rt_ep);
-+
-+	if(idx == 0 /* ep0 */){
-+		usb_write(IN07IEN, (usb_read(IN07IEN) | 0x1) );
-+		usb_write(OUT07IEN, (usb_read(OUT07IEN) | 0x1) );
-+	}else{   /* epX */
-+		reg = usb_read(dir ? IN07IEN : OUT07IEN);
-+		reg = reg | (0x1 << idx);
-+		usb_write(dir == EP_IN ? IN07IEN : OUT07IEN, reg);
-+		reg = usb_read(dir ? IN07IEN : OUT07IEN);
-+	}
-+}
-+
-+static void rt_udc_init_ep(struct rt_udc_struct *rt_usb)
-+{
-+	DBG;
-+	if(dma){
-+#if defined (CONFIG_RALINK_RT3883) || defined (CONFIG_RALINK_RT3352) || defined (CONFIG_RALINK_MT7620)
-+		usb_write(IN1CON, 0x8D);  // InEP1 : Int, 2 subfifos
-+		usb_write(IN2CON, 0x89);  // InEP2 : Bulk, 2 subfifos
-+		usb_write(OUT1CON, 0x8D);  // OutEP1 : Int, 2 subfifos
-+		usb_write(OUT2CON, 0x89);  // OutEP2 : Bulk, 2 subfifos
-+		//usb_write(OUT3CON, 0x89);  // OutEP3 : Bulk, 2 subfifos
-+		//usb_write(OUT4CON, 0x89);  // OutEP4 : Bulk, 2 subfifos
-+#elif defined (CONFIG_RALINK_RT5350)
-+		usb_write(IN1CON, 0x89);	// InEP1  : BULK, 2 subfifos
-+		usb_write(OUT1CON, 0x89);	// OutEP1 : BULK, 2 subfifos
-+#else
-+#error	"define a platform"
-+#endif
-+	}else{
-+#if defined (CONFIG_RALINK_RT3883) || defined (CONFIG_RALINK_RT3352) || defined (CONFIG_RALINK_MT7620)
-+		usb_write(IN1CON, 0x8C);	// InEP1 : Int  , 1 subfifos
-+		usb_write(IN2CON, 0x88);	// InEP2 : Bulk, 1 subfifo
-+		usb_write(OUT1CON, 0x8C);	// OutEP1 : Int, 1 subfifos
-+		usb_write(OUT2CON, 0x88);	// OutEP2 : Bulk, 1 subfifos
-+		//usb_write(OUT3CON, 0x88);	// OutEP3 : Bulk, 1 subfifo
-+		//usb_write(OUT4CON, 0x88);	// OutEP4 : Bulk. 1 subfifo
-+
-+#elif defined (CONFIG_RALINK_RT5350)
-+		usb_write(IN1CON, 0x88);	// InEP1  : BULK  , 1 subfifos
-+		usb_write(OUT1CON, 0x88);	// OutEP1 : BULK, 1 subfifos
-+#else
-+#error	"define a platform"
-+#endif
-+	}
-+	// clear all pending HW interrupts
-+	usb_write(IN07IRQ, 0xFF);
-+	usb_write(OUT07IRQ, 0xFF);
-+	rt_all_eps_reset();
-+	rt_ep_irq_enable(&rt_usb->rt_ep[0]);
-+}
-+
-+static void rt_udc_init_fifo(struct rt_udc_struct *rt_usb)
-+{
-+	// fifo control
-+	if(dma){
-+		usb_write(FIFOCTRL, 0x31);	// INEP1, Autoin = 1
-+		usb_write(FIFOCTRL, 0x32);	// INEP2, Autoin = 1
-+		usb_write(FIFOCTRL, 0x21);	// OUTEP1, Autoin = 1
-+		usb_write(FIFOCTRL, 0x22);	// OUTEP2, Autoin = 1
-+		//usb_write(FIFOCTRL, 0x23);// OUTEP3, Autoin = 1
-+		//usb_write(FIFOCTRL, 0x24);// OUTEP4, Autoin = 1
-+
-+		usb_write(FIFOCTRL, 0x00);	// Access by DMA
-+	}else{
-+		usb_write(FIFOCTRL, 0x11);	// INEP1, Autoin = 0
-+		usb_write(FIFOCTRL, 0x12);	// INEP2, Autoin = 0
-+		usb_write(FIFOCTRL, 0x01);	// OUTEP1, Autoin = 0
-+		usb_write(FIFOCTRL, 0x02);	// OUTEP2, Autoin = 0
-+		//usb_write(FIFOCTRL, 0x03);// OUTEP3, Autoin = 0
-+		//usb_write(FIFOCTRL, 0x04);// OUTEP4, Autoin = 0
-+
-+		usb_write(FIFOCTRL, 0x80);	// Access by CPU
-+	}
-+}
-+
-+static void rt_udc_init(struct rt_udc_struct *rt_usb)
-+{
-+	/* Setup & Init endpoints */
-+	rt_udc_init_ep(rt_usb);
-+
-+	// Enable HS, reset, suspend, SETUP valid data interrupt
-+	usb_write(USBIRQ, 0xff);			// clear first
-+	usb_write(USBIEN, 0x21);
-+
-+	/* Setup ep fifos */
-+	rt_udc_init_fifo(rt_usb);
-+}
-+
-+static void rt_ep_irq_disable(struct rt_ep_struct *rt_ep)
-+{
-+	u8 reg;
-+	u8 idx = EP_NO(rt_ep);
-+	u8 dir = EP_DIR(rt_ep);
-+
-+	if(idx == 0 /* ep0 */){
-+		usb_write(IN07IEN, (usb_read(IN07IEN) & ~(0x1)) );
-+		usb_write(OUT07IEN, (usb_read(OUT07IEN) & ~(0x1)) );
-+	}else{
-+		reg = usb_read(dir ? IN07IEN : OUT07IEN);
-+		reg = reg & ~(0x1 << idx);
-+		usb_write(dir == EP_IN ? IN07IEN : OUT07IEN, reg);
-+		reg = usb_read(dir ? IN07IEN : OUT07IEN);
-+	}
-+}
-+
-+static u32 rt_fifo_bcount(struct rt_ep_struct *rt_ep)
-+{
-+	u8 low, high;
-+	u32 rc;
-+
-+	int idx = EP_NO(rt_ep);
-+	int dir = EP_DIR(rt_ep);
-+
-+	if(idx == 0)
-+		return 0;
-+
-+	if(dir /* IN */){
-+		low = usb_read(0x004 + idx*8);
-+		high = usb_read( (0x004 + idx*8)+1 );
-+	}else{  /* OUT */
-+		low = usb_read(0x000 + idx*8);
-+		high = usb_read( (0x000 + idx*8)+1 );
-+	}
-+	rc = high | low;
-+	return rc;
-+}
-+
-+void rt_flush(struct rt_ep_struct *rt_ep)
-+{
-+	rt_ep_rst(rt_ep);
-+}
-+
-+void rt_ep_stall(struct rt_ep_struct *rt_ep, int value)
-+{
-+	u8 tmp;
-+	u32 addr;
-+	int idx = EP_NO(rt_ep);
-+	int dir = EP_DIR(rt_ep);
-+
-+	if(idx == 0){
-+		tmp = usb_read(EP0CS);
-+		if(value)
-+		tmp |= 0x1;
-+		else
-+			tmp &= ~(0x1);
-+		usb_write(EP0CS, tmp);
-+	}else{
-+		addr = (dir == EP_IN ? 0x006 : 0x002) + idx * 8;
-+		tmp = usb_read(addr);
-+		if(value)
-+		tmp |= 0x40;
-+		else
-+			tmp &= ~(0x40);
-+		usb_write(addr, tmp);
-+	}
-+
-+	return;
-+}
-+
-+static int rt_udc_get_frame(struct usb_gadget *_gadget)
-+{
-+	return 0;
-+}
-+
-+static int rt_udc_wakeup(struct usb_gadget *_gadget)
-+{
-+	DBG;
-+	return 0;
-+}
-+
-+
-+/*******************************************************************************
-+ * USB request control functions
-+ *******************************************************************************
-+ */
-+static inline void ep_add_request(struct rt_ep_struct *rt_ep, struct rt_request *req)
-+{
-+	if (unlikely(!req))
-+		return;
-+	req->in_use = 1;
-+	req->zlp_dma_done = 0;
-+	req->rt_ep = rt_ep;
-+	list_add_tail(&req->queue, &rt_ep->queue);
-+}
-+
-+static inline void ep_del_request(struct rt_ep_struct *rt_ep, struct rt_request *req)
-+{
-+	if (unlikely(!req))
-+		return;
-+	list_del_init(&req->queue);
-+	req->zlp_dma_done = 0;
-+	req->in_use = 0;
-+}
-+
-+static void done(struct rt_ep_struct *rt_ep, struct rt_request *req, int status)
-+{
-+	ep_del_request(rt_ep, req);
-+
-+	if (likely(req->req.status == -EINPROGRESS))
-+		req->req.status = status;
-+	else
-+		status = req->req.status;
-+
-+	if (status && status != -ESHUTDOWN)
-+		D_ERR(rt_ep->rt_usb->dev, "<%s> complete %s req %p stat %d len %u/%u\n", __func__, rt_ep->ep.name, &req->req, status,req->req.actual, req->req.length);
-+
-+	req->req.complete(&rt_ep->ep, &req->req);
-+}
-+
-+#if 0
-+/* for reference */
-+struct tasklet_struct rx_tasklet_tmp;
-+static void rx_done_do_tasklet(unsigned long arg)
-+{
-+	struct rt_ep_struct 	*rt_ep;
-+	struct rt_request 		*rt_req;
-+	struct usb_request 		*usb_req;
-+	struct usb_ep 			*ep;
-+	int						i, rx_count, status = 0;
-+	struct rt_udc_struct 	*rt_usb = &controller;
-+
-+	for (i = (IN_EP_NUM+1); i < RT_USB_NB_EP; i++) {
-+		rt_ep = &rt_usb->rt_ep[i];
-+		ep = &rt_ep->ep;
-+
-+		// shared by irq handler, protect it
-+		spin_lock_irqsave(&rx_done_lock, rx_done_lock_flags);
-+		rx_count = rt_ep->rx_done_count;
-+
-+		//spin_unlock_irqrestore(&rx_done_lock, rx_done_lock_flags);
-+
-+		for (;rx_count > 0; rx_count--) {
-+			if(unlikely(list_empty(&rt_ep->queue)))
-+				FATAL_ERROR("empty queue");
-+
-+			rt_req = list_entry(rt_ep->queue.next, struct rt_request, queue);
-+			usb_req = &rt_req->req;
-+
-+			ep_del_request(rt_ep, rt_req);
-+			rt_ep->rx_done_count--;
-+
-+			spin_unlock_irqrestore(&rx_done_lock, rx_done_lock_flags);
-+
-+			if (unlikely(rt_req->req.status == -EINPROGRESS))
-+				rt_req->req.status = status;
-+			else
-+				status = rt_req->req.status;
-+
-+			if (unlikely(status && status != -ESHUTDOWN))
-+				D_ERR(rt_ep->rt_usb->dev, "<%s> complete %s req %p stat %d len %u/%u\n", __func__, rt_ep->ep.name, &rt_req->req, status,rt_req->req.actual, rt_req->req.length);
-+
-+			// indicate gadget driver.
-+			usb_req->complete(ep, usb_req);
-+
-+			spin_lock_irqsave(&rx_done_lock, rx_done_lock_flags);
-+		}
-+		spin_unlock_irqrestore(&rx_done_lock, rx_done_lock_flags);
-+    }
-+}
-+#endif
-+
-+struct tasklet_struct tx_tasklet;
-+static void tx_do_tasklet(unsigned long arg)
-+{
-+	return;
-+}
-+
-+struct tasklet_struct rx_tasklet;
-+static void rx_do_tasklet(unsigned long arg)
-+{
-+	struct rt_ep_struct 	*rt_ep;
-+	struct rt_request 		*req;
-+	struct usb_ep 			*ep;
-+	int						i;
-+	struct rt_udc_struct 	*rt_usb = &controller;
-+
-+	for (i = (IN_EP_NUM+1/* EP0 */); i < RT_USB_NB_EP; i++){
-+		u8 epcs;
-+		rt_ep = &rt_usb->rt_ep[i];
-+		ep = &rt_ep->ep;
-+
-+		epcs = read_epcs(rt_ep);        
-+		while(!(epcs & EP_CS_BSY)){
-+			req = handle_outep(rt_ep);
-+			if(!req){
-+				// No usb request found.
-+				// Just set up the flag (pending) and clear int.
-+				rt_ep->pending = 1;
-+				break;
-+	        }else{
-+				if(req && ( (req->req.actual % rt_ep->ep.maxpacket) || (req->req.actual >= req->req.length))){
-+					xprintk("q.l=%d,q.a=%d\n", req->req.length, req->req.actual);
-+					done(rt_ep, req, 0);
-+				}
-+			}
-+
-+	        epcs = read_epcs(rt_ep);
-+	        write_epcs(rt_ep, 0x0);
-+			epcs = read_epcs(rt_ep);
-+		}
-+    }
-+}
-+
-+static void nuke(struct rt_ep_struct *rt_ep, int status)
-+{
-+	struct rt_request *req;
-+
-+	DBG;
-+	while (!list_empty(&rt_ep->queue)) {
-+		req = list_entry(rt_ep->queue.next, struct rt_request, queue);
-+		done(rt_ep, req, status);
-+	}
-+}
-+
-+/*
-+ *******************************************************************************
-+ * Data tansfer over USB functions
-+ *******************************************************************************
-+ */
-+static int read_ep0_fifo(struct rt_ep_struct *rt_ep, struct rt_request *req)
-+{
-+	u8	*buf;
-+	int	byte_count, req_bufferspace, count, i;
-+
-+DBG;
-+	if(!in_irq())
-+		FATAL_ERROR("not irq context.");
-+
-+	byte_count = read_outbc(EP_NO(rt_ep));
-+	req_bufferspace = req->req.length - req->req.actual;
-+
-+	buf = req->req.buf + req->req.actual;
-+
-+	if(!req_bufferspace)
-+		FATAL_ERROR("zlp");
-+
-+	if(byte_count > req_bufferspace)
-+		FATAL_ERROR("buffer overflow, byte_count=%d, req->req.length=%d, req->req.actual=%d\n", byte_count, req->req.length ,req->req.actual);
-+
-+	count = min(byte_count, req_bufferspace);
-+
-+	//test, Access by CPU
-+	if(dma)
-+		usb_write(FIFOCTRL, 0x80);
-+
-+	for (i = 0; i < count; i++){
-+		*buf = usb_read(EP0OUTDAT+i);
-+		buf++;
-+	}
-+	req->req.actual += count;
-+
-+	//test, Access by DMA
-+	if(dma)
-+		usb_write(FIFOCTRL, 0x00);
-+
-+	return count;
-+}
-+
-+
-+static int read_ep_fifo(struct rt_ep_struct *rt_ep, struct rt_request *req)
-+{
-+	u8	*buf, ep_no, ep_no_shift;
-+	int	byte_count, req_bufferspace, count, i;
-+
-+DBG;
-+	ep_no = EP_NO(rt_ep);
-+
-+	byte_count = read_outbc(ep_no);
-+	if(unlikely(!byte_count))
-+		FATAL_ERROR("ep_no:%d bc = 0", ep_no);
-+
-+	req_bufferspace = req->req.length - req->req.actual;
-+
-+	buf = req->req.buf + req->req.actual;
-+
-+	if(unlikely(!req_bufferspace))
-+		FATAL_ERROR("zlp");
-+
-+	xprintk("bc=%d,r.l=%d,r.a=%d\n", byte_count, req->req.length ,req->req.actual);
-+	if(unlikely(byte_count > req_bufferspace))
-+		FATAL_ERROR("buffer overflow, byte_count=%d, req->req.length=%d, req->req.actual=%d\n", byte_count, req->req.length ,req->req.actual);
-+
-+	count = min(byte_count, req_bufferspace);
-+
-+	ep_no_shift = 0x80+ep_no * 4;
-+	for (i = 0; i < count; i++){
-+		*buf = usb_read(ep_no_shift);
-+		buf++;
-+	}
-+
-+	req->req.actual += count;
-+
-+	// EP Out irq handler would arm another transaction.
-+	return count;
-+}
-+
-+static int write_ep_fifo_zlp(struct rt_ep_struct *rt_ep)
-+{
-+	u8	epcs;
-+	int	ep_no = EP_NO(rt_ep);
-+
-+DBG;
-+	xprintk("w%d ZLP\n", EP_NO(rt_ep));
-+	epcs = read_epcs(rt_ep);
-+	if(epcs & EP_CS_BSY)
-+		FATAL_ERROR("EP%d busy. cs=%x\n", ep_no, epcs);
-+
-+	/* check INEP byte count is zero? */
-+	if(read_inbc(ep_no))
-+		FATAL_ERROR("EP%d bc zero. bc=%d\n", ep_no, read_inbc(ep_no));
-+
-+	epcs = read_epcs(rt_ep);
-+	write_epcs(rt_ep, epcs);
-+	return 0;
-+}
-+
-+
-+/*
-+ * handle_epinirq()
-+*/
-+static int write_ep_fifo(struct rt_ep_struct *rt_ep, struct rt_request *req)
-+{
-+	u8	*buf, epcs;
-+	int	length, i, ep_no = EP_NO(rt_ep);
-+
-+DBG;
-+	xprintk("w ep%d req=%p,r.l=%d,r.a=%d\n",EP_NO(rt_ep),&req->req,req->req.length,req->req.actual);
-+	epcs = read_epcs(rt_ep);
-+	if(epcs & EP_CS_BSY)
-+		FATAL_ERROR("EP%d busy. epcs=%x\n", ep_no, epcs);
-+
-+	/* check INEP byte count is zero? */
-+	if(read_inbc(ep_no))
-+		FATAL_ERROR("EP%d bc=%d\n", ep_no, read_inbc(ep_no));
-+
-+	buf = req->req.buf + req->req.actual;
-+	length = (req->req.length - req->req.actual) < rt_ep->ep.maxpacket ? (req->req.length - req->req.actual) : rt_ep->ep.maxpacket;
-+	req->req.actual += length;
-+	if (!length) {	/* zlp */
-+		// for debug
-+		xprintk("<%s> zero packet\n", __func__);
-+		write_ep_fifo_zlp(rt_ep);
-+		return 0;
-+	}
-+
-+	// write to ep in fifo
-+	for (i=0; i< length; i++)
-+		usb_write(0x80+ep_no*4, *buf++);
-+
-+	epcs = read_epcs(rt_ep);
-+	write_epcs(rt_ep, epcs);
-+
-+	return length;
-+}
-+
-+/*
-+ *
-+ */
-+static int write_ep0_fifo(struct rt_ep_struct *rt_ep, struct rt_request *req)
-+{
-+	u8	*buf;
-+	int	length, i;
-+	u32 maxpacket;
-+
-+DBG;
-+	xprintk("q.l=%d, q.a=%d, maxp=%d\n", req->req.length, req->req.actual, rt_ep->ep.maxpacket);
-+
-+	buf = req->req.buf + req->req.actual;
-+	maxpacket = (u32)(rt_ep->ep.maxpacket);
-+	length = min(req->req.length - req->req.actual, maxpacket);
-+
-+	req->req.actual += length;
-+
-+	if (!length && req->req.zero)
-+		FATAL_ERROR("zlp");
-+
-+	if(!in_irq())
-+		FATAL_ERROR("Not in irq context");
-+
-+	//test, Access by CPU
-+	if(dma)
-+		usb_write(FIFOCTRL, 0x80);
-+
-+	//write to ep0in fifo
-+	for (i=0; i< length; i++)
-+		usb_write(EP0INDAT+i, *buf++);
-+
-+	// arm ep0in
-+	usb_write(IN0BC, length);
-+	if(length != rt_ep->ep.maxpacket)
-+		usb_write(EP0CS, 0x2);		// clear NAK bit to ACK host.
-+
-+	//test, Access by CPU
-+	if(dma)
-+		usb_write(FIFOCTRL, 0x00);
-+
-+	return length;
-+}
-+
-+static struct rt_request *get_unhandled_req(struct rt_ep_struct *rt_ep)
-+{
-+	struct list_head *p;
-+	struct rt_request *req = NULL;
-+
-+	if(EP_DIR(rt_ep) == EP_OUT)
-+		FATAL_ERROR("Out EP");
-+
-+	if(dma){
-+		list_for_each(p, &rt_ep->queue){
-+			req = list_entry(p, struct rt_request, queue);
-+			if(req->req.length > req->req.actual )
-+				return req;
-+			else if(unlikely(req->req.length == 0 && req->zlp_dma_done == 0))
-+				return req;
-+			else
-+				continue;
-+		}
-+		return NULL;
-+	}else{
-+		if (!list_empty(&rt_ep->queue)){
-+			req = list_entry(rt_ep->queue.next, struct rt_request, queue);
-+		}else {
-+			FATAL_ERROR("%s No request", rt_ep->ep.name);
-+		}
-+		return req;
-+	}
-+}
-+
-+#define PADDING_LENGTH 64
-+static int write_dma_txring(struct rt_ep_struct *rt_ep,struct rt_request *req)
-+{
-+	u8 *buf;
-+	int length;
-+	int retry_times = 0;
-+	u32 hw_current_idx;
-+DBG;
-+	xprintk("w%dr=%p,r.l=%d,r.a=%d\n", EP_NO(rt_ep), &req->req,req->req.length,req->req.actual);
-+
-+	length = req->req.length;
-+
-+	while(length > 0 || (req->req.length == 0 && req->zlp_dma_done == 0)){
-+retry:
-+	/* wait for a free TXD */
-+	hw_current_idx = reg_read(RTUSB_TX_DTX_IDX0);
-+	if ( tx_ring0_cache[tx_cpu_owner_idx0].txd_info2.DDONE_bit == 0 ||
-+		((tx_cpu_owner_idx0+1) % NUM_TX_DESC == hw_current_idx) ) {
-+		if(retry_times > 1000)
-+			return -1;
-+		mdelay(1);
-+		retry_times++;
-+		goto retry;
-+	}
-+
-+		if(length > TXMAXCAP)
-+			length = TXMAXCAP;
-+
-+		buf = req->req.buf + req->req.actual;
-+		req->req.actual += length;
-+
-+	/* deal with ZLP.*/
-+		if(req->req.length == 0 && req->zlp_dma_done == 0)
-+		req->zlp_dma_done = 1;
-+
-+		req->txd_count++;
-+
-+#define phys_to_bus(a) ((u32)a & 0x1FFFFFFF)
-+		if(length){
-+			tx_ring0_cache[tx_cpu_owner_idx0].txd_info1.SDP0 = cpu_to_le32(phys_to_bus(buf));
-+			tx_ring0_cache[tx_cpu_owner_idx0].txd_info2.SDL0 = cpu_to_le32(length);
-+			tx_ring0_cache[tx_cpu_owner_idx0].txd_info4.zlp_flag = 0;
-+			dma_cache_sync(NULL, (void *)buf, length, DMA_TO_DEVICE);
-+		}else{
-+			tx_ring0_cache[tx_cpu_owner_idx0].txd_info1.SDP0 = cpu_to_le32(phys_to_bus(tx_zlp_dummy_buf));
-+			tx_ring0_cache[tx_cpu_owner_idx0].txd_info2.SDL0 = cpu_to_le32(sizeof(tx_zlp_dummy_buf));
-+			tx_ring0_cache[tx_cpu_owner_idx0].txd_info4.zlp_flag = 1;
-+		}
-+
-+		tx_ring0_cache[tx_cpu_owner_idx0].txd_info4.In_ep_addr = cpu_to_le32(EP_NO(rt_ep));
-+		tx_ring0_cache[tx_cpu_owner_idx0].txd_info2.DDONE_bit = 0;
-+		tx_cpu_owner_idx0 = (tx_cpu_owner_idx0 + 1) % NUM_TX_DESC;
-+
-+		length = req->req.length - req->req.actual;
-+	}
-+
-+	reg_write(RTUSB_TX_CTX_IDX0, tx_cpu_owner_idx0);
-+
-+	return 0;
-+}
-+
-+
-+/*******************************************************************************
-+ * Endpoint handlers
-+ *******************************************************************************
-+ */
-+
-+/*
-+ *  Handle In Endpoint
-+ *  CPU(FIFO):
-+ *			Enqueue -> Write fifo -> TX_DONE -> Write fifo -> TX_DONE -> ..
-+ *
-+ *  DMA
-+ *			Enqueue -> Kick off TxD.   Enqueue -> Kick off TxD.   Enqueue -> Kick off TxD. 
-+ */
-+static int handle_inep(struct rt_ep_struct *rt_ep)
-+{
-+	struct rt_request *req;
-+
-+DBG;
-+	if(!(req = get_unhandled_req(rt_ep)))
-+		return -1;
-+
-+	if(dma){
-+		write_dma_txring(rt_ep, req);
-+	}else{
-+		write_ep_fifo(rt_ep, req);
-+		rt_ep->tx_done_count = 1;
-+	}
-+	return 0;
-+}
-+
-+/*
-+ * IRQ context.
-+ */
-+static struct rt_request *handle_outep(struct rt_ep_struct *rt_ep)
-+{
-+	struct rt_request *req;
-+	struct list_head *p;
-+	int count = 0;
-+
-+DBG;
-+	if (list_empty(&rt_ep->queue)){
-+		return NULL;
-+	}
-+
-+	list_for_each(p, &rt_ep->queue){
-+		if(count != rt_ep->rx_done_count){
-+			count++;       
-+			continue;
-+		}
-+		req = list_entry(p, struct rt_request, queue);
-+		read_ep_fifo(rt_ep, req);
-+		return req;
-+	}
-+
-+	return NULL;
-+}
-+
-+static struct rt_request *handle_inep0(struct rt_ep_struct *rt_ep)
-+{
-+	struct rt_request *req = NULL;
-+
-+DBG;
-+	if (list_empty(&rt_ep->queue)) {
-+		D_ERR(rt_ep->rt_usb->dev, "<%s> no request on %s\n", __func__, rt_ep->ep.name);
-+		return NULL;
-+	}
-+
-+	req = list_entry(rt_ep->queue.next, struct rt_request, queue);
-+	switch (rt_ep->rt_usb->ep0state) {
-+		case EP0_IN_DATA_PHASE:			/* GET_DESCRIPTOR */
-+			write_ep0_fifo(rt_ep, req);
-+			break;
-+
-+		// Impossible:
-+		//case EP0_OUT_DATA_PHASE:		/* SET_DESCRIPTOR */
-+		//case EP0_NO_DATA_PHASE:		/* for no data stage control transfer */
-+
-+		default:
-+			D_ERR(rt_ep->rt_usb->dev, "<%s> ep0 i/o, odd state %d\n", __func__, rt_ep->rt_usb->ep0state);
-+			ep_del_request(rt_ep, req);
-+			req = NULL;
-+			break;
-+	}
-+
-+	return req;
-+}
-+
-+static struct rt_request *handle_outep0(struct rt_ep_struct *rt_ep)
-+{
-+	struct rt_request *req = NULL;
-+
-+DBG;
-+	if (list_empty(&rt_ep->queue)) {
-+		D_ERR(rt_ep->rt_usb->dev, "<%s> no request on %s\n", __func__, rt_ep->ep.name);
-+		return NULL;
-+	}
-+
-+	if(rt_ep->rt_usb->ep0state != EP0_OUT_DATA_PHASE){
-+		D_EP0(rt_ep->rt_usb->dev, "<%s> ep0 i/o, odd state %d\n", __func__, rt_ep->rt_usb->ep0state);
-+		ep_del_request(rt_ep, req);
-+		req = NULL;
-+	}
-+
-+	req = list_entry(rt_ep->queue.next, struct rt_request, queue);
-+
-+	read_ep0_fifo(rt_ep, req);
-+
-+	return req;
-+}
-+
-+/*******************************************************************************
-+ * USB gadget callback functions
-+ *******************************************************************************
-+ */
-+static void handle_dma_rxdone(struct rt_udc_struct *rt_usb)
-+{
-+	DBG;
-+	tasklet_schedule(&rx_dma_tasklet);
-+}
-+
-+static void handle_dma_txdone(struct rt_udc_struct *rt_usb)
-+{
-+	DBG;
-+	tasklet_schedule(&tx_dma_tasklet);
-+}
-+
-+static void handle_dmairq(struct rt_udc_struct *rt_usb, u32 irq)
-+{
-+	if(irq & RTUSB_RX_DONE_INT0){
-+		handle_dma_rxdone(rt_usb);
-+	}
-+
-+	if(irq & RTUSB_TX_DONE_INT0){
-+		handle_dma_txdone(rt_usb);
-+	}
-+
-+	reg_write(RTUSB_INT_STATUS, irq);
-+}
-+
-+static inline int udc_dma_reset_txring(void)
-+{
-+    int count = 0;
-+    u32 reg;
-+
-+    while(count++< RING_RESET_TIMEOUT){
-+        reg = reg_read(RTUSB_PDMA_GLO_CFG);
-+        if(reg & RTUSB_TX_DMA_BUSY){
-+            mdelay(1);
-+        }else
-+            break;
-+
-+    }
-+    if(count== RING_RESET_TIMEOUT)
-+        return -1;
-+
-+    reg = reg_read(RTUSB_PDMA_RST_IDX);
-+    udelay(100);
-+    reg |= (RTUSB_RST_DTX_IDX1 | RTUSB_RST_DTX_IDX0);
-+    reg_write(RTUSB_PDMA_RST_IDX, reg);
-+    udelay(100);
-+    return 0;
-+}
-+
-+static inline int udc_dma_reset_rxring(void)
-+{
-+    int count = 0;
-+    u32 reg;
-+
-+    while(count++< RING_RESET_TIMEOUT){
-+        reg = reg_read(RTUSB_PDMA_GLO_CFG);
-+        if(reg & RTUSB_RX_DMA_BUSY){
-+            mdelay(1);
-+        }else
-+            break;
-+    }
-+    if(count== RING_RESET_TIMEOUT)
-+        return -1;
-+
-+    reg = reg_read(RTUSB_PDMA_RST_IDX);
-+    udelay(100);
-+    reg |= (RTUSB_RST_DRX_IDX1 | RTUSB_RST_DRX_IDX0);
-+    reg_write(RTUSB_PDMA_RST_IDX, reg);
-+    udelay(100);\
-+    return 0;
-+}
-+
-+static int udc_dma_hw_reset(void)
-+{
-+    if(udc_dma_reset_rxring() == -1)
-+        return -1;
-+    if(udc_dma_reset_txring() == -1)
-+        return -1;
-+    return 0;
-+}
-+
-+static void udc_dma_enable(int enable)
-+{
-+    u32 reg;
-+    reg = reg_read(RTUSB_PDMA_GLO_CFG);
-+    udelay(100);
-+    if(enable)
-+        reg |= RTUSB_TX_WB_DDONE | RTUSB_RX_DMA_EN | RTUSB_TX_DMA_EN ;
-+    else
-+        reg &= ~(RTUSB_TX_WB_DDONE | RTUSB_RX_DMA_EN | RTUSB_TX_DMA_EN) ;
-+    reg_write(RTUSB_PDMA_GLO_CFG, reg);
-+    udelay(500);
-+}
-+
-+static void udc_dma_int_enable(int enable)
-+{
-+    u32 reg;
-+    reg = reg_read(RTUSB_INT_MASK);
-+    udelay(100);
-+    if(enable)
-+        reg |=  RTUSB_RX_DONE_INT_MSK0 | RTUSB_TX_DONE_INT_MSK0 ;
-+    else
-+        reg &= ~(RTUSB_RX_DONE_INT_MSK0 | RTUSB_TX_DONE_INT_MSK0) ;
-+    reg_write(RTUSB_INT_MASK, reg);
-+    udelay(100);
-+}
-+
-+static inline void udc_dma_tx_int_clear(void)
-+{
-+    reg_write(RTUSB_INT_STATUS, 0x0000000F);
-+}
-+
-+static inline void udc_dma_rx_int_clear(void)
-+{
-+    reg_write(RTUSB_INT_STATUS, 0x00030000);
-+}
-+
-+static inline void udc_dma_all_int_clear(void)
-+{
-+    reg_write(RTUSB_INT_STATUS, 0xFFFFFFFF);
-+}
-+
-+static int copy_data_to_ep(void *src, int length, int ep_num)
-+{
-+	struct rt_ep_struct *rt_ep;
-+	struct rt_udc_struct *rt_usb = &controller;
-+	struct rt_request *req;
-+	int req_bufferspace, count;
-+	u8 *buf;
-+
-+	DBG;
-+	rt_ep = &rt_usb->rt_ep[ep_num+IN_EP_NUM];
-+
-+	if (list_empty(&rt_ep->queue)){
-+		/* It is safe to return 0 if no req queued. */
-+		return 0;
-+	}
-+
-+	req = list_entry(rt_ep->queue.next, struct rt_request, queue);
-+	req_bufferspace = req->req.length - req->req.actual;
-+
-+    if(unlikely(!req_bufferspace)){
-+        // for debug
-+        FATAL_ERROR("zlp");
-+        return -1;
-+    }
-+
-+    if(length > req_bufferspace){
-+        FATAL_ERROR("buffer overflow");
-+        return -1;
-+    }
-+
-+    // sync with cache.
-+    if(likely(length))
-+        dma_cache_sync(NULL, src, length, DMA_FROM_DEVICE);
-+
-+    buf = req->req.buf + req->req.actual;
-+    count = min(length, req_bufferspace);
-+    memcpy(buf, src, count);
-+
-+    req->req.actual += count;
-+
-+	if((req->req.actual % rt_ep->ep.maxpacket) || (req->req.actual >= req->req.length)){
-+		done(rt_ep, req, 0);    // short packet indicates transaction is done.
-+	}
-+    return count;
-+}
-+
-+static void rx_dma_done_do_tasklet(unsigned long arg)
-+{
-+	u32 *rxd_info;
-+	u32 length;
-+	int ep, rc;
-+	int processed_count=0;
-+
-+	DBG;
-+	for (;;){
-+		if (rx_ring0_cache[rx_dma_owner_idx0].rxd_info2.DDONE_bit == 0)
-+			break;
-+
-+		if(processed_count++ > RX_RESCHEDULE){
-+			tasklet_schedule(&rx_dma_tasklet);
-+			break;
-+		}
-+
-+		length = rx_ring0_cache[rx_dma_owner_idx0].rxd_info4.Rx_bcnt;
-+		ep = rx_ring0_cache[rx_dma_owner_idx0].rxd_info4.Out_ep_addr;
-+
-+		// copy data from RXD->buffer to ep queue.
-+		rc = copy_data_to_ep((void *)USBRxPackets[rx_dma_owner_idx0], length, ep);
-+		if(rc <= 0)
-+			return;
-+
-+		rxd_info = (u32 *)&rx_ring0_cache[rx_dma_owner_idx0].rxd_info4;
-+		*rxd_info = 0;
-+
-+		/* clear DDONE bit*/
-+		rxd_info = (u32 *)&rx_ring0_cache[rx_dma_owner_idx0].rxd_info2;
-+		*rxd_info = 0;
-+		//rx_ring0_cache[rx_dma_owner_idx0].rxd_info2.DDONE_bit = 0;
-+		//rx_ring0_cache[i].rxd_info2.LS0= 0;
-+		rx_ring0_cache[rx_dma_owner_idx0].rxd_info2.PLEN0= sizeof(u8) * RX_BUFF_SZ;
-+
-+		/*  Move point to next RXD which wants to alloc */
-+		//OUTL(cpu_to_le32((u32) rx_dma_owner_idx0), RTUSB_RX_CALC_IDX0);
-+		reg_write(RTUSB_RX_CALC_IDX0, rx_dma_owner_idx0);
-+
-+		/* Update to Next packet point that was received.
-+		*/
-+		rx_dma_owner_idx0 = (rx_dma_owner_idx0 + 1) % NUM_RX_DESC;
-+    }
-+}
-+
-+/*
-+ *  Recycle reqs and call gadget complete callback function.
-+ */
-+static void tx_dma_done_do_tasklet(unsigned long arg)
-+{
-+	int ep_num;
-+	u32 hw_current;
-+	struct rt_ep_struct *rt_ep;
-+	struct rt_request   *rt_req;
-+	struct rt_udc_struct *rt_usb = &controller;
-+
-+	DBG;
-+	while(tx_need_free_idx0 != (hw_current = reg_read(RTUSB_TX_DTX_IDX0))){
-+		int retry = 0;
-+		while(tx_ring0_cache[tx_need_free_idx0].txd_info2.DDONE_bit != 1){
-+			mdelay(1);
-+			retry++;
-+			if(retry > 1000)
-+				FATAL_ERROR("tx timeout");
-+		}
-+
-+		// rt_ep = tx_ring0_req_mapping[tx_need_free_idx0];
-+		ep_num = tx_ring0_cache[tx_need_free_idx0].txd_info4.In_ep_addr;
-+		if(!ep_num || ep_num > IN_EP_NUM)
-+			FATAL_ERROR("Out of range");
-+
-+		rt_ep = &rt_usb->rt_ep[ep_num];
-+		if(list_empty(&rt_ep->queue))
-+			FATAL_ERROR("ep[%d] No request", ep_num);
-+
-+		rt_req = list_entry(rt_ep->queue.next, struct rt_request, queue);
-+		rt_req->txd_count--;
-+
-+
-+		if(rt_req->txd_count == 0)
-+			done(rt_ep, rt_req, 0);
-+
-+		tx_need_free_idx0 = (tx_need_free_idx0 + 1) % NUM_TX_DESC;
-+
-+	}
-+}
-+
-+static int udc_dma_rst(void)
-+{
-+	if( udc_dma_reset_txring() == -1)
-+		return -1;
-+	if( udc_dma_reset_rxring() == -1)
-+		return -1;
-+
-+	tx_cpu_owner_idx0 = 0;
-+	tx_need_free_idx0 = 0;
-+	rx_dma_owner_idx0 = 0;
-+	reg_write(RTUSB_RX_CALC_IDX0, cpu_to_le32(NUM_RX_DESC - 1));
-+	return 0;
-+}
-+
-+static int rt_udc_dma_init(void)
-+{
-+	int i;
-+	
-+	if( udc_dma_hw_reset() == -1)
-+		return -1;
-+
-+	for(i=0; i<NUM_RX_DESC; i++){
-+		USBRxPackets[i]  = kmalloc(sizeof(u8) * RX_BUFF_SZ, GFP_ATOMIC | GFP_DMA); // todo: use  GFP_KERNEL instead.
-+		if(!USBRxPackets[i]){
-+			for(i=i-1; i>=0; i--)
-+				kfree((void *)USBRxPackets[i]);
-+			printk("No mem.");
-+			return -1;
-+		}
-+	}
-+
-+	tx_ring0_cache = dma_alloc_coherent(NULL, sizeof(struct PDMA_txdesc) * NUM_TX_DESC, &tx_ring_bus_addr, GFP_KERNEL);
-+	rx_ring0_cache = dma_alloc_coherent(NULL, sizeof(struct PDMA_rxdesc) * NUM_RX_DESC, &rx_ring_bus_addr, GFP_KERNEL);
-+
-+	printk("USB PDMA mode enabled.\n");
-+	printk("tx_ring=%p\n", tx_ring0_cache);
-+	printk("rx_ring=%p\n", rx_ring0_cache);
-+
-+	tx_ring0_noncache = tx_ring0_cache;
-+	rx_ring0_noncache = rx_ring0_cache;
-+
-+	for(i=0; i < NUM_RX_DESC; i++){
-+		memset((void *)&rx_ring0_noncache[i], 0, 16 /* sizeof()*/);
-+		rx_ring0_noncache[i].rxd_info2.DDONE_bit = 0;
-+		rx_ring0_noncache[i].rxd_info2.LS0= 0;
-+		rx_ring0_noncache[i].rxd_info2.PLEN0= sizeof(u8) * RX_BUFF_SZ;
-+		rx_ring0_noncache[i].rxd_info1.PDP0 = dma_map_single(NULL, (void *)USBRxPackets[i], sizeof(u8) * RX_BUFF_SZ, DMA_FROM_DEVICE);
-+	}
-+
-+	for (i=0; i < NUM_TX_DESC; i++) {
-+		memset((void *)&tx_ring0_noncache[i],0, 16 /* sizeof()*/);
-+		tx_ring0_noncache[i].txd_info2.LS0_bit = 1;
-+		tx_ring0_noncache[i].txd_info2.DDONE_bit = 1;
-+		// we would map dma buffer dynamically in IRQ handler & ep_queue();
-+	}
-+
-+	rx_dma_owner_idx0 = 0;
-+	tx_cpu_owner_idx0 = 0;
-+	tx_need_free_idx0 = 0;
-+
-+	/* initial UDMA register */
-+	//OUTL(cpu_to_le32((u32) UDMA_Init_Setting), RTUSB_UDMA_CTRL);
-+
-+	if(sm){
-+		printk("Storage mode enabled.\n");
-+		reg_write(RTUSB_UDMA_CTRL, 0x3F000063);	/* enable storage mode */
-+	}else
-+	reg_write(RTUSB_UDMA_CTRL, 0x3F000003);
-+
-+
-+	/* Tell the adapter where the TX/RX rings are located. */
-+	//OUTL(phys_to_bus((u32) &rx_ring[0]), RTUSB_RX_BASE_PTR0);
-+	reg_write(RTUSB_RX_BASE_PTR0, rx_ring_bus_addr);
-+
-+	//OUTL(phys_to_bus((u32) &tx_ring0[0]), RTUSB_TX_BASE_PTR0);
-+	reg_write(RTUSB_TX_BASE_PTR0, tx_ring_bus_addr);
-+
-+	//OUTL(cpu_to_le32((u32) NUM_RX_DESC), RTUSB_RX_MAX_CNT0);
-+	//OUTL(cpu_to_le32((u32) NUM_TX_DESC), RTUSB_TX_MAX_CNT0);
-+	reg_write(RTUSB_RX_MAX_CNT0, cpu_to_le32(NUM_RX_DESC));
-+	reg_write(RTUSB_TX_MAX_CNT0, cpu_to_le32(NUM_TX_DESC));
-+
-+	//OUTL(cpu_to_le32((u32) tx_cpu_owner_idx0), RTUSB_TX_CTX_IDX0);
-+	//OUTL(cpu_to_le32((u32) (NUM_RX_DESC - 1)), RTUSB_RX_CALC_IDX0);
-+	reg_write(RTUSB_TX_CTX_IDX0, cpu_to_le32(tx_cpu_owner_idx0));
-+	reg_write(RTUSB_RX_CALC_IDX0, cpu_to_le32(NUM_RX_DESC - 1));
-+
-+	udelay(500);
-+	return 0;
-+}
-+
-+static int udc_dma_fini(void)
-+{
-+	int i;
-+	u32 len;
-+	dma_addr_t addr;
-+
-+	udc_dma_enable(false);
-+	udc_dma_int_enable(false);
-+
-+	/* restore UDMA register */
-+	reg_write(RTUSB_UDMA_CTRL, 0x0);
-+
-+	// unmap & free RX buffer
-+	for(i=0; i<NUM_RX_DESC; i++){
-+		addr = rx_ring0_noncache[i].rxd_info1.PDP0;
-+		if(addr)
-+			dma_unmap_single(NULL, addr, sizeof(u8) * RX_BUFF_SZ, DMA_FROM_DEVICE);
-+		kfree((void *)USBRxPackets[i]);
-+	}
-+
-+	// unmap Tx buffer only(but not free it)
-+	for(i=0; i<NUM_TX_DESC; i++){
-+		addr = tx_ring0_noncache[i].txd_info1.SDP0;
-+		if(addr){
-+			len  = tx_ring0_noncache[i].txd_info2.SDL0;
-+			dma_unmap_single(NULL, addr, sizeof(u8) * len, DMA_TO_DEVICE);
-+		}
-+	}
-+
-+	dma_free_coherent(NULL, sizeof(struct PDMA_txdesc) * NUM_TX_DESC, tx_ring0_cache, tx_ring_bus_addr);
-+	dma_free_coherent(NULL, sizeof(struct PDMA_rxdesc) * NUM_RX_DESC, rx_ring0_cache, rx_ring_bus_addr);
-+
-+	return 0;
-+}
-+
-+static int rt_ep_enable(struct usb_ep *usb_ep, const struct usb_endpoint_descriptor *desc)
-+{
-+	struct rt_ep_struct *rt_ep = container_of(usb_ep, struct rt_ep_struct, ep);
-+	struct rt_udc_struct *rt_usb = rt_ep->rt_usb;
-+	unsigned long flags;
-+
-+	DBG;
-+
-+	if (!usb_ep || !desc || !EP_NO(rt_ep) || desc->bDescriptorType != USB_DT_ENDPOINT || rt_ep->bEndpointAddress != desc->bEndpointAddress) {
-+		D_ERR(rt_usb->dev, "<%s> bad ep or descriptor\n", __func__);
-+		return -EINVAL;
-+	}
-+	if (rt_ep->bmAttributes != desc->bmAttributes) {
-+		D_ERR(rt_usb->dev, "<%s> %s type mismatch, 0x%x, 0x%x\n", __func__, usb_ep->name, rt_ep->bmAttributes, desc->bmAttributes);
-+		return -EINVAL;
-+	}
-+	if (!rt_usb->driver || rt_usb->gadget.speed == USB_SPEED_UNKNOWN) {
-+		D_ERR(rt_usb->dev, "<%s> bogus device state\n", __func__);
-+		return -ESHUTDOWN;
-+	}
-+	local_irq_save(flags);
-+	rt_ep->stopped = 0;
-+	if(dma){
-+		//rt_ep_irq_enable(rt_ep);
-+	}else
-+		rt_ep_irq_enable(rt_ep);
-+	local_irq_restore(flags);
-+
-+	xprintk("<%s> ENABLED %s\n", __func__, usb_ep->name);
-+	return 0;
-+}
-+
-+static int rt_ep_disable(struct usb_ep *usb_ep)
-+{
-+	struct rt_ep_struct *rt_ep = container_of(usb_ep, struct rt_ep_struct, ep);
-+	unsigned long flags;
-+
-+DBG;
-+	if (!usb_ep || !EP_NO(rt_ep) /* || !list_empty(&rt_ep->queue) */) {
-+		D_ERR(rt_ep->rt_usb->dev, "<%s> %s can not be disabled\n", __func__, usb_ep ? rt_ep->ep.name : NULL);
-+		return -EINVAL;
-+	}
-+
-+	local_irq_save(flags);
-+	rt_ep->stopped = 1;
-+	nuke(rt_ep, -ESHUTDOWN);
-+	rt_flush(rt_ep);
-+	rt_ep_irq_disable(rt_ep);
-+
-+	local_irq_restore(flags);
-+
-+	xprintk("<%s> DISABLED %s\n", __func__, usb_ep->name);
-+	return 0;
-+}
-+
-+static struct usb_request *rt_ep_alloc_request (struct usb_ep *usb_ep, gfp_t gfp_flags)
-+{
-+	struct rt_request *req;
-+
-+	DBG;
-+	req = kzalloc(sizeof *req, gfp_flags);
-+	if (!req || !usb_ep)
-+		return 0;
-+
-+	INIT_LIST_HEAD(&req->queue);
-+	req->in_use = 0;
-+	return &req->req;
-+}
-+
-+static void rt_ep_free_request(struct usb_ep *usb_ep, struct usb_request *usb_req)
-+{
-+	struct rt_request *req;
-+
-+	DBG;
-+	req = container_of(usb_req, struct rt_request, req);
-+	WARN_ON(!list_empty(&req->queue));
-+	kfree(req);
-+}
-+
-+/*
-+ * Two cases :
-+ * 1) UDC TX (IN EPs)
-+ * enqueue req -> handle_ep() -> write fifo -> TX_DONE -> handle_ep() -> write next fifo -> TX_DONE...
-+ *
-+ * 2) UDC RX (OUT EPs)
-+ * enqueue req -> RX_DONE -> handle_ep() -> read_fifo -> RX_DONE -> handle_ep() -> read fifo...
-+ */
-+static int rt_ep_queue(struct usb_ep *usb_ep, struct usb_request *req, gfp_t gfp_flags)
-+{
-+	struct rt_ep_struct		*rt_ep;
-+	struct rt_udc_struct	*rt_usb;
-+	struct rt_request		*rt_req;
-+	unsigned long		flags;
-+	int			ret = 0;
-+	int			handle_right_now = 0;
-+
-+	rt_ep = container_of(usb_ep, struct rt_ep_struct, ep);
-+	rt_usb = rt_ep->rt_usb;
-+	rt_req = container_of(req, struct rt_request, req);
-+	rt_req->rt_ep = rt_ep;
-+
-+	if (rt_usb->set_config && !EP_NO(rt_ep)) {
-+		rt_usb->set_config = 0;
-+		D_ERR(rt_usb->dev, "<%s> gadget reply set config\n", __func__);
-+		return 0;
-+	}
-+
-+	if (unlikely(!req || !rt_req || !req->complete || !req->buf)) {
-+		D_ERR(rt_usb->dev, "<%s> bad params\n", __func__);
-+		return -EINVAL;
-+	}
-+
-+	if (unlikely(!usb_ep || !rt_ep)) {
-+		D_ERR(rt_usb->dev, "<%s> bad ep\n", __func__);
-+		return -EINVAL;
-+	}
-+
-+	if (!rt_usb->driver || rt_usb->gadget.speed == USB_SPEED_UNKNOWN) {
-+		D_ERR(rt_usb->dev, "<%s> bogus device state\n", __func__);
-+		return -ESHUTDOWN;
-+	}
-+
-+	/* debug */
-+	xprintk("<eq> ep%d%s %p %dB\n",  EP_NO(rt_ep), ((!EP_NO(rt_ep) && rt_ep->rt_usb->ep0state == EP0_IN_DATA_PHASE) || (EP_NO(rt_ep) && EP_DIR(rt_ep) == EP_IN  )) ? "IN" : "OUT", &rt_req->req,  req->length);
-+
-+	if (rt_ep->stopped) {
-+		printk("EP%d -> stopped.\n",  EP_NO(rt_ep));
-+		req->status = -ESHUTDOWN;
-+		return -ESHUTDOWN;
-+	}
-+
-+	if (rt_req->in_use) {
-+		D_ERR(rt_usb->dev, "<%s> refusing to queue req %p (already queued)\n", __func__, req);
-+		return -1;
-+	}
-+
-+	local_irq_save(flags);
-+	/*
-+	 *	handle No-data Ctrl transfer.
-+	 */
-+	if(!EP_NO(rt_ep)/* EP0 */ && EP_DIR(rt_ep) == EP_OUT && !req->length){
-+		done(rt_ep, rt_req, 0);
-+		local_irq_restore(flags);
-+		return ret;
-+	}
-+
-+	req->status = -EINPROGRESS;
-+	req->actual = 0;
-+
-+	if(dma || list_empty(&rt_ep->queue))
-+		handle_right_now = 1;
-+
-+	ep_add_request(rt_ep, rt_req);
-+
-+	if(handle_right_now){
-+		if(!EP_NO(rt_ep) && rt_ep->rt_usb->ep0state != EP0_OUT_DATA_PHASE){	/* ep0 && TX*/
-+			handle_inep0(rt_ep);
-+		}else if( EP_DIR(rt_ep) == EP_IN){			/* epin[1-x] */
-+			handle_inep(rt_ep);
-+		}else{
-+			// other reqs are waiting for TX_DONE int.
-+		}
-+	}
-+
-+	if(dma){
-+		if(EP_NO(rt_ep) && (EP_DIR(rt_ep) == EP_OUT))
-+			tasklet_schedule(&rx_dma_tasklet);
-+	}else{
-+		if( (EP_DIR(rt_ep) == EP_OUT)/* OUT EP */ && rt_ep->pending){
-+			rt_ep->pending = 0;
-+			handle_pending_epoutirq(rt_usb, rt_ep, rt_req);
-+		}
-+	}
-+
-+	local_irq_restore(flags);
-+	return ret;
-+}
-+
-+static int rt_ep_dequeue(struct usb_ep *usb_ep, struct usb_request *usb_req)
-+{
-+	struct rt_ep_struct *rt_ep = container_of(usb_ep, struct rt_ep_struct, ep);
-+	struct rt_request *req;
-+	unsigned long flags;
-+
-+	DBG;
-+	if (unlikely(!usb_ep || !EP_NO(rt_ep))) {
-+		D_ERR(rt_ep->rt_usb->dev, "<%s> bad ep\n", __func__);
-+		return -EINVAL;
-+	}
-+
-+	local_irq_save(flags);
-+
-+	/* make sure it's actually queued on this endpoint */
-+	list_for_each_entry(req, &rt_ep->queue, queue) {
-+		if (&req->req == usb_req)
-+			break;
-+	}
-+	if (&req->req != usb_req) {
-+		local_irq_restore(flags);
-+		return -EINVAL;
-+	}
-+
-+	done(rt_ep, req, -ECONNRESET);
-+
-+	local_irq_restore(flags);
-+	return 0;
-+}
-+
-+static int rt_ep_set_halt(struct usb_ep *usb_ep, int value)
-+{
-+	struct rt_ep_struct *rt_ep = container_of(usb_ep, struct rt_ep_struct, ep);
-+	unsigned long flags;
-+
-+	DBG;
-+	if (unlikely(!usb_ep || !EP_NO(rt_ep))) {
-+		D_ERR(rt_ep->rt_usb->dev, "<%s> bad ep\n", __func__);
-+		return -EINVAL;
-+	}
-+
-+	local_irq_save(flags);
-+
-+	if ((rt_ep->bEndpointAddress & USB_DIR_IN) && !list_empty(&rt_ep->queue)) {
-+			local_irq_restore(flags);
-+			return -EAGAIN;
-+	}
-+
-+	rt_ep_stall(rt_ep, 1);
-+
-+	local_irq_restore(flags);
-+
-+	D_EPX(rt_ep->rt_usb->dev, "<%s> %s halt\n", __func__, usb_ep->name);
-+	return 0;
-+}
-+
-+static int rt_ep_fifo_status(struct usb_ep *usb_ep)
-+{
-+	struct rt_ep_struct *rt_ep = container_of(usb_ep, struct rt_ep_struct, ep);
-+
-+	DBG;
-+	if (!usb_ep) {
-+		D_ERR(rt_ep->rt_usb->dev, "<%s> bad ep\n", __func__);
-+		return -ENODEV;
-+	}
-+
-+	if (rt_ep->rt_usb->gadget.speed == USB_SPEED_UNKNOWN)
-+		return 0;
-+	else
-+		return rt_fifo_bcount(rt_ep);
-+}
-+
-+static void rt_ep_fifo_flush(struct usb_ep *usb_ep)
-+{
-+	struct rt_ep_struct *rt_ep = container_of(usb_ep, struct rt_ep_struct, ep);
-+	unsigned long flags;
-+
-+	DBG;
-+	local_irq_save(flags);
-+
-+	if (!usb_ep || !EP_NO(rt_ep) || !list_empty(&rt_ep->queue)) {
-+		D_ERR(rt_ep->rt_usb->dev, "<%s> bad ep\n", __func__);
-+		local_irq_restore(flags);
-+		return;
-+	}
-+
-+	/* toggle and halt bits stay unchanged */
-+	rt_flush(rt_ep);
-+
-+	local_irq_restore(flags);
-+}
-+
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36)
-+static void *rt_ep_alloc_buffer(struct usb_ep *_ep, unsigned bytes, dma_addr_t *dma, gfp_t gfp_flags)
-+{
-+	char	*retval;
-+
-+	retval = kmalloc (bytes, gfp_flags & ~(__GFP_DMA|__GFP_HIGHMEM));
-+	if (retval)
-+//		*dma = virt_to_bus (retval);
-+		*dma = (dma_addr_t)~0;
-+	return retval;
-+}
-+
-+static void rt_ep_free_buffer(struct usb_ep *_ep, void *buf, dma_addr_t dma, unsigned bytes)
-+{
-+	kfree (buf);
-+}
-+#endif
-+
-+static struct usb_ep_ops rt_ep_ops = {
-+	.enable		= rt_ep_enable,
-+	.disable	= rt_ep_disable,
-+
-+	.alloc_request	= rt_ep_alloc_request,
-+	.free_request	= rt_ep_free_request,
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36)
-+	.alloc_buffer	= rt_ep_alloc_buffer,
-+	.free_buffer	= rt_ep_free_buffer,
-+#endif
-+	.queue		= rt_ep_queue,
-+	.dequeue	= rt_ep_dequeue,
-+
-+	.set_halt	= rt_ep_set_halt,
-+	.fifo_status= rt_ep_fifo_status,
-+	.fifo_flush	= rt_ep_fifo_flush,
-+};
-+
-+/*******************************************************************************
-+ * USB endpoint control functions
-+ *******************************************************************************
-+ */
-+static void usb_init_data(struct rt_udc_struct *rt_usb)
-+{
-+	struct rt_ep_struct *rt_ep;
-+	u8 i;
-+
-+	DBG;
-+	/* device/ep0 records init */
-+	INIT_LIST_HEAD(&rt_usb->gadget.ep_list);
-+	INIT_LIST_HEAD(&rt_usb->gadget.ep0->ep_list);
-+	ep0_chg_stat(__func__, rt_usb, EP0_IDLE);
-+
-+	/* basic endpoint records init */
-+	for (i = 0; i < RT_USB_NB_EP; i++) {
-+		rt_ep = &rt_usb->rt_ep[i];
-+
-+		if (i) {
-+			list_add_tail(&rt_ep->ep.ep_list, &rt_usb->gadget.ep_list);
-+			rt_ep->stopped = 1;
-+		} else
-+			rt_ep->stopped = 0;
-+
-+		INIT_LIST_HEAD(&rt_ep->queue);
-+	}
-+}
-+
-+static void udc_stop_activity(struct rt_udc_struct *rt_usb, struct usb_gadget_driver *driver)
-+{
-+	struct rt_ep_struct *rt_ep;
-+	int i;
-+
-+	if (rt_usb->gadget.speed == USB_SPEED_UNKNOWN)
-+		driver = NULL;
-+
-+	/* prevent new request submissions, kill any outstanding requests  */
-+	for (i = 0; i < RT_USB_NB_EP; i++) {
-+		rt_ep = &rt_usb->rt_ep[i];
-+		if(i != 0){					/* don't have to flush EP[0]. */
-+			rt_flush(rt_ep);
-+			rt_ep->stopped = 1;
-+			rt_ep_irq_disable(rt_ep);
-+		}
-+		nuke(rt_ep, -ESHUTDOWN);
-+	}
-+
-+	rt_usb->cfg = 0;
-+	rt_usb->intf = 0;
-+	rt_usb->alt = 0;
-+
-+	if (driver)
-+		driver->disconnect(&rt_usb->gadget);
-+}
-+
-+/*
-+ * keep for reference.
-+ */
-+static void handle_config(unsigned long data)
-+{
-+	DBG;
-+#if 0
-+	struct imx_udc_struct *imx_usb = (void *)data;
-+	struct usb_ctrlrequest u;
-+	int temp, cfg, intf, alt;
-+
-+	local_irq_disable();
-+
-+	temp = __raw_readl(imx_usb->base + USB_STAT);
-+	cfg  = (temp & STAT_CFG) >> 5;
-+	intf = (temp & STAT_INTF) >> 3;
-+	alt  =  temp & STAT_ALTSET;
-+
-+	xprintk("<%s> orig config C=%d, I=%d, A=%d / req config C=%d, I=%d, A=%d\n", __func__, imx_usb->cfg, imx_usb->intf, imx_usb->alt, cfg, intf, alt);
-+
-+	if (cfg == 1 || cfg == 2) {
-+
-+		if (imx_usb->cfg != cfg) {
-+			u.bRequest = USB_REQ_SET_CONFIGURATION;
-+			u.bRequestType = USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE;
-+			u.wValue = cfg;
-+			u.wIndex = 0;
-+			u.wLength = 0;
-+			imx_usb->cfg = cfg;
-+			imx_usb->driver->setup(&imx_usb->gadget, &u);
-+
-+		}
-+		if (imx_usb->intf != intf || imx_usb->alt != alt) {
-+			u.bRequest = USB_REQ_SET_INTERFACE;
-+			u.bRequestType = USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_INTERFACE;
-+			u.wValue = alt;
-+			u.wIndex = intf;
-+			u.wLength = 0;
-+			imx_usb->intf = intf;
-+			imx_usb->alt = alt;
-+			imx_usb->driver->setup(&imx_usb->gadget, &u);
-+		}
-+	}
-+
-+	imx_usb->set_config = 0;
-+
-+	local_irq_enable();
-+#endif
-+}
-+
-+static void handle_setup(struct rt_udc_struct *rt_usb)
-+{
-+	u8 epcs;
-+	int i;
-+	union {
-+		struct usb_ctrlrequest  r;
-+		u8          raw[8];
-+		u32         word[2];
-+	} u;
-+	struct rt_ep_struct *rt_ep = &rt_usb->rt_ep[0];
-+
-+	nuke(rt_ep, -EPROTO);
-+
-+	// read setup packet
-+	for (i = 0; i < 8; i++)
-+		u.raw[i] = usb_read(SETUPDATA + i);
-+
-+	le16_to_cpus(&u.r.wValue);
-+	le16_to_cpus(&u.r.wIndex);
-+	le16_to_cpus(&u.r.wLength);
-+
-+	xprintk("<SETUP> %02x.%02x v%04x\n", u.r.bRequestType, u.r.bRequest, u.r.wValue);
-+
-+	switch(u.r.bRequest){
-+		/* HW(CUSB2) has handled it. */
-+		case USB_REQ_SET_ADDRESS:
-+			if (u.r.bRequestType != (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
-+				break;
-+			return;
-+	}
-+
-+	if(!u.r.wLength){
-+		ep0_chg_stat(__func__, rt_usb, EP0_NO_DATA_PHASE);
-+	}else if (u.r.bRequestType & USB_DIR_IN){
-+		ep0_chg_stat(__func__, rt_usb, EP0_IN_DATA_PHASE);
-+	}else{
-+		// reload and clear out0bc
-+		usb_write(OUT0BC, 0);
-+		ep0_chg_stat(__func__, rt_usb, EP0_OUT_DATA_PHASE);
-+	}
-+
-+	if(!rt_usb->driver){
-+		printk("<%s> please insert gadget driver/module.\n", __func__);
-+		goto stall;
-+	}
-+
-+	if(!rt_usb->driver->setup)
-+		goto stall;
-+
-+	i = rt_usb->driver->setup(&rt_usb->gadget, &u.r); // gadget would queue more usb req here
-+
-+	if (i < 0) {
-+		printk("<%s> device setup error %d\n", __func__, i);
-+		goto stall;
-+	}
-+
-+	if(rt_usb->ep0state == EP0_NO_DATA_PHASE){
-+		epcs = read_epcs(rt_ep);
-+		epcs |= EP_CS_EP0_HSNAK;	// clear hsnak to let HW ack the status stage.
-+		write_epcs(rt_ep, epcs);
-+	}
-+
-+	return;
-+stall:
-+	printk("<%s> protocol STALL\n", __func__);
-+	rt_ep_stall(rt_ep, 1);
-+	ep0_chg_stat(__func__, rt_usb, EP0_STALL);
-+	return;
-+}
-+
-+/*
-+ *  handle TX done interrupt
-+ */
-+static void handle_epinirq(struct rt_udc_struct *rt_usb, u8 epinirq)
-+{
-+	u8 irq = 0x0;
-+    struct rt_request *req;
-+	struct rt_ep_struct *rt_ep;
-+
-+	rt_ep = &rt_usb->rt_ep[epinirq];
-+
-+	if (list_empty(&rt_ep->queue))
-+		FATAL_ERROR("empty queue");
-+
-+	// clear ep interrupt
-+	if(epinirq < 8){
-+		irq |= 1 << epinirq; 
-+		usb_write(IN07IRQ, irq);
-+	}else{
-+		irq |= 1 << (epinirq-8);
-+		usb_write(IN815IRQ, irq);
-+	}
-+
-+	req = list_entry(rt_ep->queue.next, struct rt_request, queue);
-+	xprintk("r.l=%d, r.a=%d\n", req->req.length, req->req.actual);
-+	if(req->req.actual >= req->req.length ){
-+		if( req->req.actual && (!(req->req.actual % rt_ep->ep.maxpacket))  && req->req.zero){
-+			// deal with one more "zlp"
-+			req->req.zero = 0;
-+			write_ep_fifo_zlp(rt_ep);
-+                        return;
-+		}
-+
-+		// the first tx req in ep->queue is done.
-+		rt_ep->tx_done_count = 0;
-+		if(!epinirq /* EP0 */)
-+			ep0_chg_stat(__func__, rt_usb, EP0_IDLE);
-+		done(rt_ep, req, 0);
-+#if 1
-+		// more reqs there.
-+		if (!list_empty(&rt_ep->queue) && !rt_ep->tx_done_count){
-+			if(!epinirq /* EP0 */){
-+				handle_inep0(rt_ep);
-+			}else{
-+				handle_inep(rt_ep);
-+			}
-+		}
-+#endif
-+	}else{
-+		if(!epinirq /* EP0 */){
-+			handle_inep0(rt_ep);
-+		}else
-+			handle_inep(rt_ep);
-+	}
-+}
-+
-+static void handle_ep0outirq(struct rt_udc_struct *rt_usb, u8 epoutirq)
-+{
-+	u8 epcs, irq = 0x0;
-+    struct rt_request *req = NULL;
-+	struct rt_ep_struct *rt_ep = NULL;
-+
-+DBG;
-+	rt_ep = &rt_usb->rt_ep[0];
-+
-+	if(rt_usb->ep0state == EP0_STALL){
-+		printk("<%s> protocol STALL\n", __func__);
-+		rt_ep_stall(rt_ep, 1);
-+		return;
-+	}
-+
-+	if(rt_usb->ep0state != EP0_OUT_DATA_PHASE)
-+		FATAL_ERROR("Odd stage");
-+
-+	do{
-+		if(unlikely(!read_outbc(0x0)))
-+			FATAL_ERROR("EP0 BC");
-+
-+		if (unlikely(list_empty(&rt_ep->queue)))
-+			FATAL_ERROR("EP0 no req");
-+
-+		req = handle_outep0(rt_ep);
-+
-+		//req = list_entry(rt_ep->queue.next, struct rt_request, queue);
-+		xprintk("q.l=%d,q.a=%d\n", req->req.length, req->req.actual);
-+
-+		// clear ep interrupt
-+		irq |= 1; 
-+		usb_write(OUT07IRQ, irq);
-+
-+		if(req && ((req->req.actual % rt_ep->ep.maxpacket) || (req->req.actual >= req->req.length))){
-+			ep0_chg_stat(__func__, rt_usb, EP0_IDLE);
-+			done(rt_ep, req, 0);	// short packet indicates transaction is done.
-+
-+			epcs = read_epcs(rt_ep);
-+			epcs |= EP_CS_EP0_HSNAK;	// clear hsnak bit to let HW ack the status stage.
-+			write_epcs(rt_ep, epcs);
-+			break;
-+		}
-+
-+		// reload EP[0]
-+		usb_write(OUT0BC /*out0bc*/, 0x0);
-+		epcs = read_epcs(rt_ep);
-+	}while(!(epcs & EP0_OUT_BSY));
-+}
-+
-+static void handle_pending_epoutirq(struct rt_udc_struct *rt_usb, struct rt_ep_struct *rt_ep, struct rt_request *req)
-+{
-+	u8 epcs;
-+
-+DBG;
-+	do{
-+		if(unlikely(!read_outbc(EP_NO(rt_ep))))
-+			FATAL_ERROR("No BC");
-+
-+		handle_outep(rt_ep);
-+		if(req && ( (req->req.actual % rt_ep->ep.maxpacket) || (req->req.actual >= req->req.length))){
-+			xprintk("q.l=%d,q.a=%d\n", req->req.length, req->req.actual);
-+
-+			//rx_done(rt_ep, req, 0);
-+			done(rt_ep, req, 0);
-+		}
-+
-+		epcs = read_epcs(rt_ep);
-+		write_epcs(rt_ep, 0x0);
-+		epcs = read_epcs(rt_ep);
-+
-+	}while(!(epcs & EP_CS_BSY));
-+}
-+
-+static void handle_epoutirq(struct rt_udc_struct *rt_usb, u8 epoutirq)
-+{
-+	u8 irq = 0x0;
-+
-+DBG;
-+	if(unlikely(epoutirq == 0x0)){
-+		handle_ep0outirq(rt_usb, 0x0);
-+		return;
-+	}
-+
-+	tasklet_schedule(&rx_tasklet);
-+
-+	// clear ep interrupt
-+	irq |= 1 << epoutirq; 
-+	usb_write(OUT07IRQ, irq);
-+	return;
-+}
-+
-+static void eps_change_to_hs(struct rt_udc_struct *rt_usb)
-+{
-+	int i;
-+	struct rt_ep_struct *rt_ep;
-+	for(i = 0; i < RT_USB_NB_EP; i++){
-+		rt_ep = &rt_usb->rt_ep[i];
-+		if(rt_ep->bmAttributes == USB_ENDPOINT_XFER_BULK){
-+			rt_ep->ep.maxpacket = 512;
-+		}
-+	}
-+}
-+
-+static void eps_change_to_fs(struct rt_udc_struct *rt_usb)
-+{
-+	int i;
-+	struct rt_ep_struct *rt_ep;
-+	for(i = 0; i < RT_USB_NB_EP; i++){
-+		rt_ep = &rt_usb->rt_ep[i];
-+		if(rt_ep->bmAttributes == USB_ENDPOINT_XFER_BULK){
-+			rt_ep->ep.maxpacket = 64;
-+		}
-+	}
-+}
-+
-+void handle_highspeed(struct rt_udc_struct *rt_usb)
-+{
-+	DBG;
-+
-+	eps_change_to_hs(rt_usb);
-+
-+	if(dma){
-+#if defined (CONFIG_RALINK_RT3883) || defined (CONFIG_RALINK_RT3352) || defined (CONFIG_RALINK_MT7620)
-+		usb_write(IN1CON, 0x8D);	// InEP1 : Int, 2 subfifos
-+		usb_write(IN2CON, 0x89);	// InEP2 : Bulk, 2 subfifo
-+		usb_write(OUT1CON, 0x8D);	// OutEP1 : Int, 2 subfifos
-+		usb_write(OUT2CON, 0x89);	// OutEP2 : Bulk, 2 subfifos
-+		//usb_write(OUT3CON, 0x89);	// OutEP3 : Bulk, 2 subfifo
-+		//usb_write(OUT4CON, 0x89);	// OutEP4 : Bulk. 2 subfifo
-+#elif defined (CONFIG_RALINK_RT5350)
-+		// Access by CPU
-+		usb_write(IN1CON, 0x89);	// InEP1 : Bulk, 2 subfifos
-+		usb_write(OUT1CON, 0x89);	// OutEP1 : Bulk, 2 subfifos
-+#else
-+#error	"define a platform"
-+#endif
-+	}else{
-+		// Access by CPU
-+#if defined (CONFIG_RALINK_RT3883) || defined (CONFIG_RALINK_RT3352) || defined (CONFIG_RALINK_MT7620)
-+		usb_write(IN1CON, 0x8C);	// InEP1 : Int  , 1 subfifos
-+		usb_write(IN2CON, 0x88);	// InEP2 : Bulk, 1 subfifo
-+
-+		usb_write(OUT1CON, 0x8C);	// OutEP1 : Int, 1 subfifos
-+		usb_write(OUT2CON, 0x88);	// OutEP2 : Bulk, 1 subfifos
-+		//usb_write(OUT3CON, 0x88);	// OutEP3 : Bulk, 1 subfifo
-+		//usb_write(OUT4CON, 0x88);	// OutEP4 : Bulk. 1 subfifo
-+#elif defined (CONFIG_RALINK_RT5350)
-+		// Access by CPU
-+		usb_write(IN1CON, 0x88);	// InEP1 : Bulk  , 1 subfifos
-+		usb_write(OUT1CON, 0x88);	// OutEP1 : Bulk, 1 subfifos
-+#else
-+#error	"define a platform"
-+#endif
-+
-+	}
-+	// clear all pending interrupts
-+	usb_write(IN07IRQ, 0xFF);
-+	usb_write(OUT07IRQ, 0xFF);
-+
-+	rt_usb->gadget.speed = USB_SPEED_HIGH;	
-+
-+	// reset ALL endpoints
-+	rt_all_eps_reset();
-+
-+	// Enable ep0 interrupt.
-+	// (EPx interrupt is enabled in EPx_enable(). )
-+	rt_ep_irq_enable(&rt_usb->rt_ep[0]);
-+}
-+
-+static void handle_reset(struct rt_udc_struct *rt_usb)
-+{
-+	struct rt_ep_struct *rt_ep;
-+        int i;
-+
-+	eps_change_to_fs(rt_usb);
-+
-+	// remove all EPs' usb request
-+	for (i = 0; i < RT_USB_NB_EP; i++) {
-+		rt_ep = &rt_usb->rt_ep[i];
-+		if(i != 0){                                     /* don't have to flush EP[0]. */
-+			rt_flush(rt_ep);
-+			rt_ep->stopped = 1;
-+			rt_ep_irq_disable(rt_ep);
-+		}
-+		nuke(rt_ep, -ESHUTDOWN);
-+	}
-+
-+        rt_usb->cfg = 0;
-+        rt_usb->intf = 0;
-+        rt_usb->alt = 0;
-+
-+        if(dma){
-+		// clear all PDMA interrupts
-+		udc_dma_all_int_clear();
-+		// reset PDMA
-+		udc_dma_rst();
-+	}
-+
-+	// clear all pending interrupts
-+	usb_write(IN07IRQ, 0xFF);
-+	usb_write(OUT07IRQ, 0xFF);
-+
-+	// flush all EP's fifo
-+	rt_all_eps_reset();                        
-+}
-+
-+static void handle_usbirq(struct rt_udc_struct *rt_usb, u8 usbirq)
-+{
-+	if(usbirq & USB_INTR_SETUP_TOKEN_VALID){
-+		// Setup token is arrival.
-+		// get setup data and pass it to gadget driver.
-+		handle_setup(rt_usb);
-+	}
-+
-+	if(usbirq & USB_INTR_RESET)
-+		handle_reset(rt_usb);
-+
-+	if(usbirq & USB_INTR_HSPEED)
-+		handle_highspeed(rt_usb);
-+
-+	/*
-+	 * DO NOT try to clear SoF and token Interrupt!
-+	 */
-+	if( (usbirq & USB_INTR_SETUP_TOKEN_VALID) ||
-+		(usbirq & USB_INTR_HSPEED) ||
-+		(usbirq & USB_INTR_RESET))
-+		usb_write(USBIRQ, usbirq);
-+}
-+
-+static int irq_count = 100;	/* for debug */
-+/*
-+ * Interrupt handler
-+ */
-+irqreturn_t rt_irq_handler(int irq, void *_dev)
-+{
-+	u32 usbirq,epin07irq,epin07ien,epout07irq,epout07ien;
-+	struct rt_udc_struct *rt_usb = _dev;
-+#ifdef DEBUG
-+	u32 count_tmp = irq_count;	
-+#endif
-+
-+        
-+	DBG;
-+	irq_count++;
-+
-+	usbirq = usb_read(USBIRQ);
-+	epin07irq = usb_read(IN07IRQ);
-+	epin07ien = usb_read(IN07IEN);
-+	epout07irq = usb_read(OUT07IRQ);
-+	epout07ien = usb_read(OUT07IEN);
-+
-+	//epin07irq = epin07irq & epin07ien;
-+	//epout07irq = epout07irq & epout07ien;
-+	
-+	xprintk(">%x\n", count_tmp);
-+	dump_usbirq(usbirq);
-+	dump_epirq(epin07irq, epin07ien, 1);
-+	dump_epirq(epout07irq, epout07ien, 0);
-+
-+	if(dma){
-+		u32 dma_irq = reg_read(RTUSB_INT_STATUS);
-+		if(epin07irq & 0x1)				// INEP0
-+			handle_epinirq(rt_usb, 0);
-+
-+		if(usbirq)						// HS, Reset, SetupValid
-+			handle_usbirq(rt_usb, usbirq);
-+
-+		if(epout07irq & 0x1)			// OUTEP0
-+			handle_epoutirq(rt_usb, 0);
-+
-+		if(dma_irq)
-+			handle_dmairq(rt_usb, dma_irq);
-+
-+	}else{
-+		if(epin07irq & 0x1)				// INEP0
-+			handle_epinirq(rt_usb, 0);
-+
-+		if(usbirq)						// HS, Reset, SetupValid
-+			handle_usbirq(rt_usb, usbirq);
-+
-+		if(epout07irq & 0x1)			// OUTEP0
-+			handle_epoutirq(rt_usb, 0);
-+
-+		if(epout07irq & 0x2)			// OUTEP1
-+			handle_epoutirq(rt_usb, 1);
-+
-+		if(epin07irq & 0x2)				// INEP1
-+			handle_epinirq(rt_usb, 1);
-+
-+		if(epout07irq & 0x4)			// OUTEP2
-+			handle_epoutirq(rt_usb, 2);
-+
-+		if(epin07irq & 0x4)				// INEP2
-+			handle_epinirq(rt_usb, 2);
-+
-+		//if(epout07irq & 0x8)			// OUTEP3
-+		//	handle_epoutirq(rt_usb, 3);
-+
-+		//if(epout07irq & 0x10)			// OUTEP4
-+		//	handle_epoutirq(rt_usb, 4);
-+	}
-+	xprintk("<%x\n", count_tmp);
-+	return IRQ_HANDLED;
-+}
-+
-+/*
-+ ******************************************************************************
-+ * Static defined Ralink UDC structure
-+ *******************************************************************************
-+ */
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
-+static void nop_release(struct device *dev)
-+{
-+    return;
-+}
-+#endif
-+
-+static const struct usb_gadget_ops rt_udc_ops = {
-+	.get_frame	 = rt_udc_get_frame,
-+	.wakeup		 = rt_udc_wakeup,
-+};
-+
-+static struct rt_udc_struct controller = {
-+	.gadget = {
-+		.ops		= &rt_udc_ops,
-+		.ep0		= &controller.rt_ep[0].ep,
-+		.name		= driver_name,
-+		.dev = {
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
-+                        .init_name = "gadget",
-+                        .release = nop_release,
-+#else
-+			.bus_id = "gadget",
-+#endif
-+		},
-+	},
-+	.rt_ep[0] = {
-+		.ep = {
-+			.name		= ep0name,
-+			.ops		= &rt_ep_ops,
-+			.maxpacket	= 64,
-+		},
-+		.rt_usb		= &controller,
-+		.bEndpointAddress	= 0,
-+		.bmAttributes		= USB_ENDPOINT_XFER_CONTROL,
-+		.pending		= 0,
-+	 },
-+#if defined (CONFIG_RALINK_RT3883) || defined (CONFIG_RALINK_RT3352) || defined (CONFIG_RALINK_MT7620)
-+	.rt_ep[1] = {
-+		.ep = {
-+			.name		= "ep1in-int",
-+			.ops		= &rt_ep_ops,
-+			.maxpacket	= 64,
-+		},
-+		.rt_usb			= &controller,
-+		.bEndpointAddress	= USB_DIR_IN | 1,
-+		.bmAttributes		= USB_ENDPOINT_XFER_INT,
-+		.pending        = 0,
-+	 },
-+	.rt_ep[2] = {
-+		.ep = {
-+			.name		= "ep2in-bulk",
-+			.ops		= &rt_ep_ops,
-+			.maxpacket	= 64,
-+		},
-+		.rt_usb			= &controller,
-+		.bEndpointAddress	= USB_DIR_IN | 2,
-+		.bmAttributes		= USB_ENDPOINT_XFER_BULK,
-+		.pending        = 0,
-+	},
-+	.rt_ep[3] = {
-+		.ep = {
-+			.name		= "ep1out-int",
-+			.ops		= &rt_ep_ops,
-+			.maxpacket	= 64,
-+		},
-+		.rt_usb			= &controller,
-+		.bEndpointAddress 	= USB_DIR_OUT | 1,
-+		.bmAttributes		= USB_ENDPOINT_XFER_INT,
-+		.pending        = 0,
-+	 },
-+	.rt_ep[4] = {
-+		.ep = {
-+			.name		= "ep2out-bulk",
-+			.ops		= &rt_ep_ops,
-+			.maxpacket	= 64,
-+		 },
-+		.rt_usb			= &controller,
-+		.bEndpointAddress 	= USB_DIR_OUT | 2,
-+		.bmAttributes		= USB_ENDPOINT_XFER_BULK,
-+		.pending        = 0,
-+	 },
-+	 /*
-+	.rt_ep[5] = {
-+		.ep = {
-+			.name		= "ep3out-bulk",
-+			.ops		= &rt_ep_ops,
-+			.maxpacket	= 64,
-+		},
-+		.rt_usb			= &controller,
-+		.bEndpointAddress 	= USB_DIR_OUT | 3,
-+		.bmAttributes		= USB_ENDPOINT_XFER_BULK,
-+		.pending        = 0,
-+	 },
-+	.rt_ep[6] = {
-+		.ep = {
-+			.name		= "ep4out-bulk",
-+			.ops		= &rt_ep_ops,
-+			.maxpacket	= 64,
-+		},
-+		.rt_usb			= &controller,
-+		.bEndpointAddress 	= USB_DIR_OUT | 4,
-+		.bmAttributes		= USB_ENDPOINT_XFER_BULK,
-+		.pending        = 0,
-+	 },
-+	 */
-+
-+#elif defined (CONFIG_RALINK_RT5350)
-+	.rt_ep[1] = {
-+		.ep = {
-+			.name		= "ep1in-bulk",
-+			.ops		= &rt_ep_ops,
-+			.maxpacket	= 64,
-+		},
-+		.rt_usb			= &controller,
-+		.bEndpointAddress	= USB_DIR_IN | 1,
-+		.bmAttributes		= USB_ENDPOINT_XFER_BULK,
-+		.pending        = 0,
-+	 },
-+	.rt_ep[2] = {
-+		.ep = {
-+			.name		= "ep1out-bulk",
-+			.ops		= &rt_ep_ops,
-+			.maxpacket	= 64,
-+		},
-+		.rt_usb			= &controller,
-+		.bEndpointAddress 	= USB_DIR_OUT | 1,
-+		.bmAttributes		= USB_ENDPOINT_XFER_BULK,
-+		.pending        = 0,
-+	 },
-+#else
-+#error	"define a platform"
-+#endif
-+};
-+
-+/*
-+ *******************************************************************************
-+ * USB gadged driver functions
-+ *******************************************************************************
-+ */
-+
-+static void rt_udc_enable(struct rt_udc_struct *rt_usb)
-+{
-+	DBG;
-+	rt_usb->gadget.speed = USB_SPEED_FULL;
-+	if(dma){
-+		// enable dma interrupts
-+		udc_dma_all_int_clear();
-+		udc_dma_int_enable(true);
-+
-+		udc_dma_rst();
-+
-+		// enable dma
-+		udc_dma_enable(true);
-+	}
-+}
-+
-+static void rt_udc_disable(struct rt_udc_struct *rt_usb)
-+{
-+	DBG;
-+	ep0_chg_stat(__func__, rt_usb, EP0_IDLE);
-+	rt_usb->gadget.speed = USB_SPEED_UNKNOWN;
-+	if(dma){
-+		// disable dma interrupts
-+		udc_dma_all_int_clear();
-+		udc_dma_int_enable(false);
-+
-+		udc_dma_rst();
-+
-+		// disable dma
-+		udc_dma_enable(false);
-+	}
-+}
-+
-+int usb_gadget_register_driver(struct usb_gadget_driver *driver)
-+{
-+	struct rt_udc_struct *rt_usb = &controller;
-+	int retval;
-+
-+	DBG;
-+	if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind || !driver->disconnect || !driver->setup)
-+			return -EINVAL;
-+	if (!rt_usb)
-+		return -ENODEV;
-+	if (rt_usb->driver)
-+		return -EBUSY;
-+
-+	/* first hook up the driver ... */
-+	rt_usb->driver = driver;
-+	rt_usb->gadget.dev.driver = &driver->driver;
-+	retval = device_add(&rt_usb->gadget.dev);
-+	if (retval)
-+		goto fail;
-+
-+	retval = driver->bind(&rt_usb->gadget);
-+	if (retval) {
-+		D_ERR(rt_usb->dev, "<%s> bind to driver --> error %d\n", __func__, retval);
-+		device_del(&rt_usb->gadget.dev);
-+		goto fail;
-+	}
-+
-+	D_INI(rt_usb->dev, "<%s> registered gadget driver '%s'\n", __func__, driver->driver.name);
-+	rt_udc_enable(rt_usb);
-+	return 0;
-+
-+fail:
-+	rt_usb->driver = NULL;
-+	rt_usb->gadget.dev.driver = NULL;
-+	return retval;
-+}
-+EXPORT_SYMBOL(usb_gadget_register_driver);
-+
-+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
-+{
-+	struct rt_udc_struct *rt_usb = &controller;
-+
-+DBG;
-+	if (!rt_usb)
-+		return -ENODEV;
-+	if (!driver || driver != rt_usb->driver || !driver->unbind)
-+		return -EINVAL;
-+
-+	udc_stop_activity(rt_usb, driver);
-+	rt_udc_disable(rt_usb);
-+	del_timer(&rt_usb->timer);
-+
-+	driver->unbind(&rt_usb->gadget);
-+	rt_usb->gadget.dev.driver = NULL;
-+	rt_usb->driver = NULL;
-+
-+	device_del(&rt_usb->gadget.dev);
-+
-+	D_INI(rt_usb->dev, "<%s> unregistered gadget driver '%s'\n", __func__, driver->driver.name);
-+
-+	return 0;
-+}
-+EXPORT_SYMBOL(usb_gadget_unregister_driver);
-+
-+/*******************************************************************************
-+ * Module functions
-+ *******************************************************************************
-+ */
-+static int __init rt_udc_probe(struct platform_device *pdev)
-+{
-+	struct rt_udc_struct *rt_usb = &controller;
-+	struct resource *res_mem, *res_irq;
-+	void __iomem *base;
-+	int ret = 0, res_mem_size;
-+
-+DBG;
-+	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+	if (!res_mem) {
-+		dev_err(&pdev->dev, "can't get device resources\n");
-+		return -ENODEV;
-+	}
-+
-+	res_mem_size = res_mem->end - res_mem->start + 1;
-+	if (!request_mem_region(res_mem->start, res_mem_size, res_mem->name)) {
-+		dev_err(&pdev->dev, "can't allocate %d bytes at %d address\n", res_mem_size, res_mem->start);
-+		return -ENOMEM;
-+	}
-+
-+	base = ioremap(res_mem->start, res_mem_size);
-+	if (!base) {
-+		dev_err(&pdev->dev, "ioremap failed\n");
-+		ret = -EIO;
-+		goto fail1;
-+	}
-+
-+	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-+	if (!res_irq) {
-+			dev_err(&pdev->dev, "can't get irq number\n");
-+			ret = -ENODEV;
-+			goto fail3;
-+	}
-+	rt_usb->interrupt = res_irq->start;
-+
-+	ret = request_irq(rt_usb->interrupt, rt_irq_handler, IRQF_DISABLED, driver_name, rt_usb);
-+	if (ret) {
-+		dev_err(&pdev->dev, "can't get irq %i, err %d\n", rt_usb->interrupt, ret);
-+		goto fail3;
-+	}
-+
-+	rt_usb->res = res_mem;
-+	rt_usb->base = base;
-+	rt_usb->dev = &pdev->dev;
-+
-+	device_initialize(&rt_usb->gadget.dev);
-+
-+	rt_usb->gadget.dev.parent = &pdev->dev;
-+	rt_usb->gadget.dev.dma_mask = pdev->dev.dma_mask;
-+
-+	platform_set_drvdata(pdev, rt_usb);
-+
-+	usb_init_data(rt_usb);
-+
-+	if(dma){
-+		if(rt_udc_dma_init())
-+			goto fail4;
-+	}
-+
-+	rt_udc_init(rt_usb);
-+
-+	init_timer(&rt_usb->timer);
-+	rt_usb->timer.function = handle_config;
-+	rt_usb->timer.data = (unsigned long)rt_usb;
-+
-+	return 0;
-+fail4:
-+	free_irq(rt_usb->interrupt, rt_usb);
-+fail3:
-+	iounmap(base);
-+fail1:
-+	release_mem_region(res_mem->start, res_mem_size);
-+	return ret;
-+}
-+
-+static int __exit rt_udc_remove(struct platform_device *pdev)
-+{
-+	struct rt_udc_struct *rt_usb = platform_get_drvdata(pdev);
-+
-+	DBG;
-+	rt_udc_disable(rt_usb);
-+	del_timer(&rt_usb->timer);
-+
-+	free_irq(rt_usb->interrupt, rt_usb);
-+
-+	iounmap(rt_usb->base);
-+	release_mem_region(rt_usb->res->start,	rt_usb->res->end - rt_usb->res->start + 1);
-+
-+	//if (pdata->exit)
-+	//	pdata->exit(&pdev->dev);
-+	platform_set_drvdata(pdev, NULL);
-+
-+	return 0;
-+}
-+
-+static void set_device_mode(void)
-+{
-+	u32 val;
-+	val = le32_to_cpu(*(volatile u_long *)(SYSCFG1));
-+	val = val & ~(USB0_HOST_MODE);
-+	*(volatile u_long *)(SYSCFG1) = cpu_to_le32(val);
-+	udelay(10000);
-+}
-+
-+/*----------------------------------------------------------------------------*/
-+static struct platform_driver udc_driver = {
-+
-+	.driver		= {
-+		.name	= driver_name,
-+		.owner	= THIS_MODULE,
-+	},
-+	.probe		= rt_udc_probe,
-+	.remove		= __exit_p(rt_udc_remove),
-+	.suspend	= NULL,
-+	.resume		= NULL,
-+};
-+
-+static int udc_create_proc(void)
-+{
-+    pProcDir = proc_mkdir(PROC_DIR, NULL);
-+    if ((pProcDebugLevel = create_proc_entry(DEBUGLEVEL_PROCFILE, 0, pProcDir))){
-+        pProcDebugLevel->read_proc = (read_proc_t*)&debuglevel_read;
-+        pProcDebugLevel->write_proc = (write_proc_t*)&debuglevel_write;
-+    }
-+    return 0;
-+}
-+
-+static int udc_remove_proc(void)
-+{
-+    if (pProcDebugLevel)
-+        remove_proc_entry(DEBUGLEVEL_PROCFILE, pProcDir);
-+    if (pProcDir)
-+        remove_proc_entry(PROC_DIR, 0);
-+
-+    return 0;
-+}
-+
-+static int __init udc_init(void)
-+{
-+	int ret;
-+	udc_create_proc();
-+
-+	try_wake_up();
-+	set_device_mode();
-+
-+	ret = platform_driver_register(&udc_driver);
-+
-+	tasklet_init(&rx_tasklet, rx_do_tasklet, 0);
-+	tasklet_init(&tx_tasklet, tx_do_tasklet, 0);
-+
-+	if(dma){
-+		printk("DMA TXMAXCAP=%d\n", TXMAXCAP);
-+		tasklet_init(&rx_dma_tasklet, rx_dma_done_do_tasklet, 0);
-+		tasklet_init(&tx_dma_tasklet, tx_dma_done_do_tasklet, 0);
-+	}
-+
-+	return ret; //platform_driver_probe(&udc_driver, rt_udc_probe);
-+}
-+module_init(udc_init);
-+
-+static void __exit udc_exit(void)
-+{
-+	DBG;
-+	udc_remove_proc();
-+	if(dma)
-+		udc_dma_fini();
-+	platform_driver_unregister(&udc_driver);
-+}
-+module_exit(udc_exit);
-+
-+MODULE_DESCRIPTION("Ralink USB Device Controller driver");
-+MODULE_AUTHOR("Ying Yuan Huang <yy_huang@ralinktech.com>");
-+MODULE_LICENSE("GPL");
-+MODULE_ALIAS("platform:rt_udc");
-+