+++ /dev/null
-From b3e08e29f6f32dfb400374dc96d0a2f61e6adceb Mon Sep 17 00:00:00 2001
-From: Lars-Peter Clausen <lars@metafoo.de>
-Date: Sat, 24 Apr 2010 12:18:46 +0200
-Subject: [PATCH 08/16] Add jz4740 udc driver
-
-Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
----
- drivers/usb/gadget/Kconfig | 8 +
- drivers/usb/gadget/Makefile | 1 +
- drivers/usb/gadget/gadget_chips.h | 1 +
- drivers/usb/gadget/jz4740_udc.c | 2155 +++++++++++++++++++++++++++++++++++++
- drivers/usb/gadget/jz4740_udc.h | 101 ++
- 5 files changed, 2266 insertions(+)
- create mode 100644 drivers/usb/gadget/jz4740_udc.c
- create mode 100644 drivers/usb/gadget/jz4740_udc.h
-
---- a/drivers/usb/gadget/Kconfig
-+++ b/drivers/usb/gadget/Kconfig
-@@ -192,6 +192,14 @@ config USB_FUSB300
- help
- Faraday usb device controller FUSB300 driver
-
-+config USB_JZ4740
-+ tristate "JZ4740 UDC"
-+ depends on MACH_JZ4740
-+ select USB_GADGET_DUALSPEED
-+ help
-+ Select this to support the Ingenic JZ4740 processor
-+ high speed USB device controller.
-+
- config USB_OMAP
- tristate "OMAP USB Device Controller"
- depends on ARCH_OMAP1
---- 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_JZ4740) += jz4740_udc.o
-
- # USB Functions
- usb_f_acm-y := f_acm.o
---- a/drivers/usb/gadget/gadget_chips.h
-+++ b/drivers/usb/gadget/gadget_chips.h
-@@ -29,6 +29,7 @@
- */
- #define gadget_is_at91(g) (!strcmp("at91_udc", (g)->name))
- #define gadget_is_goku(g) (!strcmp("goku_udc", (g)->name))
-+#define gadget_is_jz4740(g) (!strcmp("ingenic_hsusb", (g)->name))
- #define gadget_is_musbhdrc(g) (!strcmp("musb-hdrc", (g)->name))
- #define gadget_is_net2280(g) (!strcmp("net2280", (g)->name))
- #define gadget_is_pxa(g) (!strcmp("pxa25x_udc", (g)->name))
---- /dev/null
-+++ b/drivers/usb/gadget/jz4740_udc.c
-@@ -0,0 +1,2155 @@
-+/*
-+ * 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/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 Management 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
-+
-+/* 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
-+
-+/*
-+ * 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, uint16_t mask)
-+{
-+ usb_writew(udc, reg, usb_readw(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 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, unsigned int count)
-+{
-+ uint8_t *buf;
-+ unsigned int length;
-+ void __iomem *fifo = ep->dev->base + ep->fifo;
-+
-+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-+
-+ buf = req->req.buf + req->req.actual;
-+
-+ length = req->req.length - req->req.actual;
-+ if (length > count)
-+ length = count;
-+ req->req.actual += length;
-+
-+ DEBUG("Write %d (count %d), fifo %x\n", length, count, ep->fifo);
-+
-+ writesl(fifo, buf, length >> 2);
-+ writesb(fifo, &buf[length - (length & 3)], length & 3);
-+
-+ return length;
-+}
-+
-+static int read_packet(struct jz4740_ep *ep,
-+ struct jz4740_request *req, unsigned int count)
-+{
-+ uint8_t *buf;
-+ unsigned int length;
-+ void __iomem *fifo = ep->dev->base + ep->fifo;
-+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-+
-+ buf = req->req.buf + req->req.actual;
-+
-+ length = req->req.length - req->req.actual;
-+ if (length > count)
-+ length = count;
-+ req->req.actual += length;
-+
-+ DEBUG("Read %d, fifo %x\n", length, ep->fifo);
-+
-+ readsl(fifo, buf, length >> 2);
-+ readsb(fifo, &buf[length - (length & 3)], length & 3);
-+
-+ 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_unprepare(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;
-+ }
-+}
-+
-+/* 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_select_ep(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_prepare_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.
-+ */
-+
-+static int jz4740_udc_start(struct usb_gadget *gadget,
-+ struct usb_gadget_driver *driver)
-+{
-+ struct jz4740_udc *udc = container_of(gadget, struct jz4740_udc, gadget);
-+
-+ /* hook up the driver */
-+ udc->driver = driver;
-+
-+
-+ /* then enable host detection and ep0; and we're ready
-+ * for set_configuration as well as eventual disconnect.
-+ */
-+ udc_enable(udc);
-+
-+ DEBUG("%s: registered gadget driver '%s'\n", gadget->name,
-+ driver->driver.name);
-+
-+ return 0;
-+}
-+
-+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_select_ep(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.
-+ */
-+static int jz4740_udc_stop(struct usb_gadget *gadget,
-+ struct usb_gadget_driver *driver)
-+{
-+ struct jz4740_udc *udc = container_of(gadget, struct jz4740_udc, gadget);
-+ unsigned long flags;
-+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-+
-+ spin_lock_irqsave(&udc->lock, flags);
-+ udc->driver = NULL;
-+ stop_activity(udc, driver);
-+ spin_unlock_irqrestore(&udc->lock, flags);
-+
-+ udc_disable(udc);
-+
-+ DEBUG("unregistered driver '%s'\n", driver->driver.name);
-+
-+ return 0;
-+}
-+
-+/*-------------------------------------------------------------------------*/
-+
-+/** 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;
-+
-+ DEBUG("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
-+ max = le16_to_cpu(ep->desc->wMaxPacketSize);
-+
-+ 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;
-+
-+ /* 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;
-+ 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) */
-+ index = usb_readb(ep->dev, JZ_REG_UDC_INDEX);
-+ spin_unlock_irqrestore(&ep->dev->lock, ep->dev->lock_flags);
-+
-+ req->req.complete(&ep->ep, &req->req);
-+
-+ spin_lock_irqsave(&ep->dev->lock, ep->dev->lock_flags);
-+ /* Restore index */
-+ jz_udc_set_index(ep->dev, index);
-+ ep->stopped = stopped;
-+}
-+
-+static inline unsigned int jz4740_udc_ep_irq_enable_reg(struct jz4740_ep *ep)
-+{
-+ if (ep_is_in(ep))
-+ return JZ_REG_UDC_INTRINE;
-+ else
-+ return JZ_REG_UDC_INTROUTE;
-+}
-+
-+/** Enable EP interrupt */
-+static void pio_irq_enable(struct jz4740_ep *ep)
-+{
-+ DEBUG("%s: EP%d %s\n", __FUNCTION__, ep_index(ep), ep_is_in(ep) ? "IN": "OUT");
-+
-+ usb_setw(ep->dev, jz4740_udc_ep_irq_enable_reg(ep), BIT(ep_index(ep)));
-+}
-+
-+/** Disable EP interrupt */
-+static void pio_irq_disable(struct jz4740_ep *ep)
-+{
-+ DEBUG("%s: EP%d %s\n", __FUNCTION__, ep_index(ep), ep_is_in(ep) ? "IN": "OUT");
-+
-+ usb_clearw(ep->dev, jz4740_udc_ep_irq_enable_reg(ep), BIT(ep_index(ep)));
-+}
-+
-+/*
-+ * 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_select_ep(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 = list_first_entry(&ep->queue, struct jz4740_request, queue);
-+ 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_select_ep(ep);
-+ if (ep->desc) {
-+ uint32_t csr;
-+
-+ 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\92t 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);
-+ }
-+ }
-+
-+ ep->stopped = value;
-+
-+ 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_select_ep(ep);
-+ 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->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;
-+
-+ req = kzalloc(sizeof(*req), gfp_flags);
-+ if (!req)
-+ return NULL;
-+
-+ 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;
-+
-+ 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;
-+
-+ 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, 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 (ep_is_in(ep)) {
-+ /* EP1 & EP2 */
-+ jz_udc_select_ep(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_select_ep(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, 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_select_ep(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_select_ep(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);
-+
-+ 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_select_ep(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__, 0,
-+ (dev->gadget.speed == USB_SPEED_HIGH) ? "HIGH":"FULL" );
-+}
-+
-+/*
-+ * jz4740 usb device interrupt handler.
-+ */
-+static irqreturn_t jz4740_udc_irq(int irq, void *devid)
-+{
-+ struct jz4740_udc *jz4740_udc = devid;
-+ uint8_t index;
-+
-+ uint32_t intr_usb = usb_readb(jz4740_udc, JZ_REG_UDC_INTRUSB) & 0x7; /* mask SOF */
-+ uint32_t intr_in = usb_readw(jz4740_udc, JZ_REG_UDC_INTRIN);
-+ uint32_t intr_out = usb_readw(jz4740_udc, JZ_REG_UDC_INTROUT);
-+ uint32_t intr_dma = usb_readb(jz4740_udc, 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(&jz4740_udc->lock);
-+ index = usb_readb(jz4740_udc, JZ_REG_UDC_INDEX);
-+
-+ /* Check for resume from suspend mode */
-+ if ((intr_usb & USB_INTR_RESUME) &&
-+ (usb_readb(jz4740_udc, JZ_REG_UDC_INTRUSBE) & USB_INTR_RESUME)) {
-+ DEBUG("USB resume\n");
-+ jz4740_udc->driver->resume(&jz4740_udc->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(jz4740_udc);
-+ }
-+
-+ /* Check for endpoint 0 interrupt */
-+ if (intr_in & USB_INTR_EP0) {
-+ DEBUG("USB_INTR_EP0 (control)\n");
-+ jz4740_handle_ep0(jz4740_udc, intr_in);
-+ }
-+
-+ /* Check for Bulk-IN DMA interrupt */
-+ if (intr_dma & 0x1) {
-+ int ep_num;
-+ struct jz4740_ep *ep;
-+ ep_num = (usb_readl(jz4740_udc, JZ_REG_UDC_CNTL1) >> 4) & 0xf;
-+ ep = &jz4740_udc->ep[ep_num + 1];
-+ jz_udc_select_ep(ep);
-+ usb_setb(jz4740_udc, ep->csr, USB_INCSR_INPKTRDY);
-+/* jz4740_in_epn(jz4740_udc, ep_num, intr_in);*/
-+ }
-+
-+ /* Check for Bulk-OUT DMA interrupt */
-+ if (intr_dma & 0x2) {
-+ int ep_num;
-+ ep_num = (usb_readl(jz4740_udc, JZ_REG_UDC_CNTL2) >> 4) & 0xf;
-+ jz4740_out_epn(jz4740_udc, ep_num, intr_out);
-+ }
-+
-+ /* Check for each configured endpoint interrupt */
-+ if (intr_in & USB_INTR_INEP1) {
-+ DEBUG("USB_INTR_INEP1\n");
-+ jz4740_in_epn(jz4740_udc, 1, intr_in);
-+ }
-+
-+ if (intr_in & USB_INTR_INEP2) {
-+ DEBUG("USB_INTR_INEP2\n");
-+ jz4740_in_epn(jz4740_udc, 2, intr_in);
-+ }
-+
-+ if (intr_out & USB_INTR_OUTEP1) {
-+ DEBUG("USB_INTR_OUTEP1\n");
-+ jz4740_out_epn(jz4740_udc, 1, intr_out);
-+ }
-+
-+ /* Check for suspend mode */
-+ if ((intr_usb & USB_INTR_SUSPEND) &&
-+ (usb_readb(jz4740_udc, JZ_REG_UDC_INTRUSBE) & USB_INTR_SUSPEND)) {
-+ DEBUG("USB suspend\n");
-+ jz4740_udc->driver->suspend(&jz4740_udc->gadget);
-+ /* Host unloaded from us, can do something, such as flushing
-+ the NAND block cache etc. */
-+ }
-+
-+ jz_udc_set_index(jz4740_udc, index);
-+
-+ spin_unlock(&jz4740_udc->lock);
-+
-+ return IRQ_HANDLED;
-+}
-+
-+
-+
-+/*-------------------------------------------------------------------------*/
-+
-+
-+static inline struct jz4740_udc *gadget_to_udc(struct usb_gadget *gadget)
-+{
-+ return container_of(gadget, struct jz4740_udc, gadget);
-+}
-+
-+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,
-+ .udc_start = jz4740_udc_start,
-+ .udc_stop = jz4740_udc_stop,
-+};
-+
-+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 jz4740_udc_controller = {
-+ .gadget = {
-+ .ops = &jz4740_udc_ops,
-+ .ep0 = &jz4740_udc_controller.ep[0].ep,
-+ .max_speed = USB_SPEED_HIGH,
-+ .name = "jz4740-udc",
-+ .dev = {
-+ .init_name = "gadget",
-+ },
-+ },
-+
-+ /* control endpoint */
-+ .ep[0] = {
-+ .ep = {
-+ .name = "ep0",
-+ .ops = &jz4740_ep_ops,
-+ .maxpacket = EP0_MAXPACKETSIZE,
-+ },
-+ .dev = &jz4740_udc_controller,
-+
-+ .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 = &jz4740_udc_controller,
-+
-+ .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 = &jz4740_udc_controller,
-+
-+ .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 = &jz4740_udc_controller,
-+
-+ .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 int jz4740_udc_probe(struct platform_device *pdev)
-+{
-+ struct jz4740_udc *jz4740_udc = &jz4740_udc_controller;
-+ int ret;
-+
-+ spin_lock_init(&jz4740_udc->lock);
-+
-+ jz4740_udc->dev = &pdev->dev;
-+
-+ jz4740_udc->clk = clk_get(&pdev->dev, "udc");
-+ if (IS_ERR(jz4740_udc->clk)) {
-+ ret = PTR_ERR(jz4740_udc->clk);
-+ dev_err(&pdev->dev, "Failed to get udc clock: %d\n", ret);
-+ return ret;
-+ }
-+
-+ platform_set_drvdata(pdev, jz4740_udc);
-+
-+ jz4740_udc->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+
-+ if (!jz4740_udc->mem) {
-+ ret = -ENOENT;
-+ dev_err(&pdev->dev, "Failed to get mmio memory resource\n");
-+ goto err_clk_put;
-+ }
-+
-+ jz4740_udc->mem = request_mem_region(jz4740_udc->mem->start,
-+ resource_size(jz4740_udc->mem), pdev->name);
-+
-+ if (!jz4740_udc->mem) {
-+ ret = -EBUSY;
-+ dev_err(&pdev->dev, "Failed to request mmio memory region\n");
-+ goto err_clk_put;
-+ }
-+
-+ jz4740_udc->base = ioremap(jz4740_udc->mem->start, resource_size(jz4740_udc->mem));
-+
-+ if (!jz4740_udc->base) {
-+ ret = -EBUSY;
-+ dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
-+ goto err_release_mem_region;
-+ }
-+
-+ jz4740_udc->irq = platform_get_irq(pdev, 0);
-+ ret = request_irq(jz4740_udc->irq, jz4740_udc_irq, 0, pdev->name,
-+ jz4740_udc);
-+ if (ret) {
-+ dev_err(&pdev->dev, "Failed to request irq: %d\n", ret);
-+ goto err_iounmap;
-+ }
-+
-+ ret = usb_add_gadget_udc(&pdev->dev, &jz4740_udc->gadget);
-+ if (ret) {
-+ dev_err(&pdev->dev, "Failed to add gadget: %d\n", ret);
-+ goto err_free_irq;
-+ }
-+
-+/* udc_disable(jz4740_udc);*/
-+ udc_reinit(jz4740_udc);
-+
-+ return 0;
-+
-+err_free_irq:
-+ free_irq(jz4740_udc->irq, pdev);
-+err_iounmap:
-+ iounmap(jz4740_udc->base);
-+err_release_mem_region:
-+ release_mem_region(jz4740_udc->mem->start, resource_size(jz4740_udc->mem));
-+err_clk_put:
-+ clk_put(jz4740_udc->clk);
-+
-+ return ret;
-+}
-+
-+static int jz4740_udc_remove(struct platform_device *pdev)
-+{
-+ struct jz4740_udc *dev = platform_get_drvdata(pdev);
-+
-+ usb_del_gadget_udc(&dev->gadget);
-+ 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);
-+
-+ return 0;
-+}
-+
-+#ifdef CONFIG_PM
-+
-+static int jz4740_udc_suspend(struct device *dev)
-+{
-+ struct jz4740_udc *jz4740_udc = dev_get_drvdata(dev);
-+
-+ if (jz4740_udc->state == UDC_STATE_ENABLE)
-+ udc_disable(jz4740_udc);
-+
-+ return 0;
-+}
-+
-+static int jz4740_udc_resume(struct device *dev)
-+{
-+ struct jz4740_udc *jz4740_udc = dev_get_drvdata(dev);
-+
-+ if (jz4740_udc->state == UDC_STATE_ENABLE)
-+ udc_enable(jz4740_udc);
-+
-+ return 0;
-+}
-+
-+static SIMPLE_DEV_PM_OPS(jz4740_udc_pm_ops, jz4740_udc_suspend, 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");
---- /dev/null
-+++ b/drivers/usb/gadget/jz4740_udc.h
-@@ -0,0 +1,101 @@
-+/*
-+ * 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
-+
-+/*-------------------------------------------------------------------------*/
-+
-+enum ep_type {
-+ ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt
-+};
-+
-+struct jz4740_ep {
-+ struct usb_ep ep;
-+ struct jz4740_udc *dev;
-+
-+ const struct usb_endpoint_descriptor *desc;
-+
-+ uint8_t stopped;
-+ uint8_t bEndpointAddress;
-+ uint8_t bmAttributes;
-+
-+ enum ep_type type;
-+ size_t fifo;
-+ uint32_t 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;
-+ unsigned long lock_flags;
-+
-+ enum ep0state ep0state;
-+ struct jz4740_ep ep[UDC_MAX_ENDPOINTS];
-+
-+ udc_state_t state;
-+
-+ struct resource *mem;
-+ void __iomem *base;
-+ int irq;
-+
-+ struct clk *clk;
-+};
-+
-+#define ep_maxpacket(EP) ((EP)->ep.maxpacket)
-+
-+static inline bool ep_is_in(const struct jz4740_ep *ep)
-+{
-+ return (ep->bEndpointAddress & USB_DIR_IN) == USB_DIR_IN;
-+}
-+
-+static inline uint8_t ep_index(const struct jz4740_ep *ep)
-+{
-+ return ep->bEndpointAddress & 0xf;
-+}
-+
-+#endif /* __USB_GADGET_JZ4740_H__ */
projects / openwrt.git / blobdiff