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cyb4_linux/drivers/usb/gadget/s3c-udc-hs.c

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/*
* drivers/usb/gadget/s3c-udc-hs.c
* Samsung S3C on-chip full/high speed USB device controllers
*
* $Id: s3c-udc-hs.c,v 1.5 2008/07/25 05:24:31 dasan Exp $*
*
* Copyright (C) 2006 for Samsung Electronics
*
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <asm/irq.h>
#include <asm/arch/regs-irq.h>
#include <asm/arch/regs-gpio.h>
#include <asm/arch/regs-udc-hs.h>
#if defined(CONFIG_CPU_S3C2443)
#include <asm/arch/regs-s3c2443-clock.h>
#elif defined(CONFIG_CPU_S3C2450)
#include <asm/arch/regs-s3c2450-clock.h>
#elif defined(CONFIG_CPU_S3C2416)
#include <asm/arch/regs-s3c2416-clock.h>
#else
#error "Unknown CPU configuration, Select right configuration!!"
#endif
#include "s3c-udc.h"
#include <linux/major.h> //Qisda, Leo SJ Yang, 2009/11/4, for udc power state
#undef DEBUG_S3C_UDC_SETUP
#undef DEBUG_S3C_UDC_EP0
#undef DEBUG_S3C_UDC
#define USB_TEST_MODE
// USB Device DMA support
#define RX_DMA_MODE 0
#define TX_DMA_MODE 0
static int tx_dmaStart = 0;
static int rx_dmaStart = 0;
#ifdef DEBUG_S3C_UDC_SETUP
static char *state_names[] = {
"WAIT_FOR_SETUP",
"DATA_STATE_XMIT",
"DATA_STATE_NEED_ZLP",
"WAIT_FOR_OUT_STATUS",
"DATA_STATE_RECV"
};
#define DEBUG_SETUP(fmt,args...) printk(fmt, ##args)
#else
#define DEBUG_SETUP(fmt,args...) do {} while(0)
#endif
#ifdef DEBUG_S3C_UDC_EP0
#define DEBUG_EP0(fmt,args...) printk(fmt, ##args)
#else
#define DEBUG_EP0(fmt,args...) do {} while(0)
#endif
#ifdef DEBUG_S3C_UDC
#define DEBUG(fmt,args...) printk(fmt, ##args)
#else
#define DEBUG(fmt,args...) do {} while(0)
#endif
#define DRIVER_DESC "Samsung Dual-speed USB Device Controller"
#define DRIVER_VERSION __DATE__
#define USB_UDC_DEVICE_POWER_STATE 10 //Qisda,2009/11/04 udc power state
struct s3c_udc *the_controller;
static const char driver_name[] = "s3c-udc";
static const char driver_desc[] = DRIVER_DESC;
static const char ep0name[] = "ep0-control";
// Max packet size
static u32 ep0_fifo_size = 64;
static u32 ep_fifo_size = 512;
static u32 ep_fifo_size2 = 1024;
/*
Local declarations.
*/
static int s3c_ep_enable(struct usb_ep *ep,
const struct usb_endpoint_descriptor *);
static int s3c_ep_disable(struct usb_ep *ep);
static struct usb_request *s3c_alloc_request(struct usb_ep *ep, gfp_t gfp_flags);
static void s3c_free_request(struct usb_ep *ep, struct usb_request *);
static void *s3c_alloc_buffer(struct usb_ep *ep, unsigned, dma_addr_t *,
gfp_t gfp_flags);
static void s3c_free_buffer(struct usb_ep *ep, void *, dma_addr_t,
unsigned);
static int s3c_queue(struct usb_ep *ep, struct usb_request *, gfp_t gfp_flags);
static int s3c_dequeue(struct usb_ep *ep, struct usb_request *);
static int s3c_set_halt(struct usb_ep *ep, int);
static int s3c_fifo_status(struct usb_ep *ep);
static void s3c_fifo_flush(struct usb_ep *ep);
static void s3c_ep0_kick(struct s3c_udc *dev, struct s3c_ep *ep);
static void s3c_handle_ep0(struct s3c_udc *dev);
static void done(struct s3c_ep *ep, struct s3c_request *req,
int status);
static void stop_activity(struct s3c_udc *dev,
struct usb_gadget_driver *driver);
static int udc_enable(struct s3c_udc *dev);
static void udc_set_address(struct s3c_udc *dev, unsigned char address);
static void reconfig_usbd(void);
/*Qisda,Leo SJ Yang,2009/10/26*/
/*send key code F6 1 when USB plugin*/
/*send key code F6 0 when USB unplugin*/
/*send key code F6 0 when USB safety remove USB{*/
#ifdef QISDA
void USB_SaftRemove_keypad_message_to_ap(uint uiSleep)
#endif
/*}Qisda,Leo SJ Yang,2009/10/26*/
static __inline__ u32 usb_read(u32 port, u8 ind)
{
__raw_writel(ind, S3C_UDC_INDEX_REG);
return __raw_readl(port);
}
static __inline__ void usb_write(u32 val, u32 port, u8 ind)
{
__raw_writel(ind, S3C_UDC_INDEX_REG);
__raw_writel(val, port);
}
static __inline__ void usb_set(u32 val, u32 port, u8 ind)
{
__raw_writel(ind, S3C_UDC_INDEX_REG);
__raw_writel(__raw_readl(port) | val, port);
}
static __inline__ void usb_clear(u32 val, u32 port, u8 ind)
{
__raw_writel(ind, S3C_UDC_INDEX_REG);
__raw_writel(__raw_readl(port) & ~val, port);
}
static struct usb_ep_ops s3c_ep_ops = {
.enable = s3c_ep_enable,
.disable = s3c_ep_disable,
.alloc_request = s3c_alloc_request,
.free_request = s3c_free_request,
.alloc_buffer = s3c_alloc_buffer,
.free_buffer = s3c_free_buffer,
.queue = s3c_queue,
.dequeue = s3c_dequeue,
.set_halt = s3c_set_halt,
.fifo_status = s3c_fifo_status,
.fifo_flush = s3c_fifo_flush,
};
/* Inline code */
static __inline__ int write_packet(struct s3c_ep *ep,
struct s3c_request *req, int max)
{
u16 *buf;
int length, count;
u32 fifo = ep->fifo;
buf = req->req.buf + req->req.actual;
prefetch(buf);
length = req->req.length - req->req.actual;
length = min(length, max);
req->req.actual += length;
DEBUG("%s: Write %d (max %d), fifo=0x%x\n",
__FUNCTION__, length, max, fifo);
usb_write(length, (u32) S3C_UDC_BYTE_WRITE_CNT_REG, ep_index(ep));
for (count=0;count<length;count+=2) {
__raw_writel(*buf++, fifo);
}
return length;
}
#define CONFIG_USB_GADGET_DEBUG_FILES
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
static const char proc_node_name[] = "driver/udc";
/*Qisda,Leo SJ Yang,2009/07/28 add /proc/driver/udc for EM mode{*/
char g_EMUSBTestIsOK=0;
/*}Qisda,Leo SJ Yang,2009/07/28 add /proc/driver/udc for EM mode*/
static int
udc_proc_read(char *page, char **start, off_t off, int count,
int *eof, void *_dev)
{
char *buf = page;
struct s3c_udc *dev = _dev;
char *next = buf;
unsigned size = count;
unsigned long flags;
int t;
if (off != 0)
return 0;
local_irq_save(flags);
/*Qisda,Leo SJ Yang,2009/07/28 add /proc/driver/udc for EM mode{*/
#if 0
/* basic device status */
t = scnprintf(next, size,
DRIVER_DESC "\n"
"%s version: %s\n"
"Gadget driver: %s\n"
"\n",
driver_name, DRIVER_VERSION,
dev->driver ? dev->driver->driver.name : "(none)");
#endif
t = scnprintf(next, size,
"MassStorage=%d\n",
g_EMUSBTestIsOK);
size -= t;
next += t;
/*}Qisda,Leo SJ Yang,2009/07/28 add /proc/driver/udc for EM mode*/
local_irq_restore(flags);
*eof = 1;
return count - size;
}
#define create_proc_files() \
create_proc_read_entry(proc_node_name, 0, NULL, udc_proc_read, dev)
#define remove_proc_files() \
remove_proc_entry(proc_node_name, NULL)
#else /* !CONFIG_USB_GADGET_DEBUG_FILES */
#define create_proc_files() do {} while (0)
#define remove_proc_files() do {} while (0)
#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
/*
* udc_disable - disable USB device controller
*/
static void udc_disable(struct s3c_udc *dev)
{
DEBUG_SETUP("%s: %p\n", __FUNCTION__, dev);
udc_set_address(dev, 0);
dev->ep0state = WAIT_FOR_SETUP;
dev->gadget.speed = USB_SPEED_UNKNOWN;
dev->usb_address = 0;
/* usb power disable */
/*Qisda,2009/7/29,Leo SJ Yang{*/
/*Mark the previous the GPIO Config that doesn't belong to EVT0*/
#if 0
#if defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416)
s3c2410_gpio_pullup(S3C2443_GPH14, 1); /* pull-down enable */
s3c2410_gpio_pullup(S3C2410_GPF2, 1); /* pull-down enable */
#else
s3c2410_gpio_pullup(S3C2443_GPH14, 2); /* pull-down enable */
#endif
#endif
/*}Qisda,2009/7/29,Leo SJ Yang*/
#ifdef CONFIG_QISDA_E600_EVT2
if((readl(S3C2410_GPHDAT) &&(1<<11))==0)
{
s3c2410_gpio_cfgpin(S3C2443_GPH14, S3C2443_GPH14_OUTP);
s3c2410_gpio_setpin(S3C2443_GPH14, 0);
/* usb clock disable */
// __raw_writel(0, S3C_UCLKCON);
/* USB Port is Suspend mode */
// __raw_writel(__raw_readl(S3C2410_MISCCR)|(1<<12), S3C2410_MISCCR);
/* PHY power disable */
// __raw_writel(__raw_readl(S3C_PWRCFG)&~(1<<4), S3C_PWRCFG);
}
__raw_writel((0<<31)|(0<<2)|(1<<1)|(1<<0), S3C_UCLKCON);
//#elif CONFIG_QISDA_AS090B00_EVT1
#else
if((readl(S3C2410_GPHDAT) &&(1<<11))==0)
{
s3c2410_gpio_cfgpin(S3C2443_GPH14, S3C2443_GPH14_OUTP);
s3c2410_gpio_setpin(S3C2443_GPH14, 0);
/* usb clock disable */
// __raw_writel(0, S3C_UCLKCON);
/* USB Port is Suspend mode */
// __raw_writel(__raw_readl(S3C2410_MISCCR)|(1<<12), S3C2410_MISCCR);
/* PHY power disable */
// __raw_writel(__raw_readl(S3C_PWRCFG)&~(1<<4), S3C_PWRCFG);
}
//__raw_writel((0<<31)|(0<<2)|(1<<1)|(1<<0), S3C_UCLKCON);
#endif
}
/*
* udc_reinit - initialize software state
*/
static void udc_reinit(struct s3c_udc *dev)
{
u32 i;
DEBUG_SETUP("%s: %p\n", __FUNCTION__, dev);
/* device/ep0 records init */
INIT_LIST_HEAD(&dev->gadget.ep_list);
INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
dev->ep0state = WAIT_FOR_SETUP;
/* basic endpoint records init */
for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
struct s3c_ep *ep = &dev->ep[i];
if (i != 0)
list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
ep->desc = 0;
ep->stopped = 0;
INIT_LIST_HEAD(&ep->queue);
ep->pio_irqs = 0;
}
/* the rest was statically initialized, and is read-only */
}
#define BYTES2MAXP(x) (x / 8)
#define MAXP2BYTES(x) (x * 8)
/* until it's enabled, this UDC should be completely invisible
* to any USB host.
*/
static int udc_enable(struct s3c_udc *dev)
{
DEBUG_SETUP("%s: %p\n", __FUNCTION__, dev);
/* usb power enable, vbus detect pull-up/down disable */
/*Qisda,2009/7/29,Leo SJ Yang{*/
/*Mark the previous the GPIO Config that doesn't belong to EVT0*/
#if 0
#if defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416)
s3c2410_gpio_pullup(S3C2443_GPH14, 2); /* usb power pull-up enable */
s3c2410_gpio_pullup(S3C2410_GPF2, 0); /* vbus detect pull-up/down disable */
#else
s3c2410_gpio_pullup(S3C2443_GPH14, 0); /* usb power pull-up enable */
#endif
#endif
/*}Qisda,2009/7/29,Leo SJ Yang*/
s3c2410_gpio_cfgpin(S3C2443_GPH14, S3C2443_GPH14_OUTP);
s3c2410_gpio_setpin(S3C2443_GPH14, 1); /* usb power enbale */
/*Qisda,2009/8/14,Leo SJ Yang{*/
/*Set GPD13,GPD14 as C_MODE and USB_SEL for EVT2*/
#ifdef CONFIG_QISDA_E600_EVT2
s3c2410_gpio_cfgpin(S3C2410_GPD14, S3C2410_GPD14_OUTP);
s3c2410_gpio_setpin(S3C2410_GPD14,0); /* usb power enbale */
s3c2410_gpio_cfgpin(S3C2410_GPD13, S3C2410_GPD13_OUTP);
s3c2410_gpio_setpin(S3C2410_GPD13,1); /* usb power enbale */
/*Qisda,2009/8/14,Leo SJ Yang}*/
//#elif CONFIG_QISDA_AS090B00_EVT1
#else
/*Qisda,2009/09/02,Leo SJ Yang{*/
s3c2410_gpio_cfgpin(S3C2410_GPD13, S3C2410_GPD13_OUTP);
s3c2410_gpio_setpin(S3C2410_GPD13,1); /* usb power enbale */
/*Qisda,2009/09/02,Leo SJ Yang}*/
#endif
mdelay(1);
/* if reset by sleep wakeup, control the retention I/O cell */
if (__raw_readl(S3C_RSTSTAT) & 0x8)
__raw_writel(__raw_readl(S3C_RSTCON)|(1<<16), S3C_RSTCON);
/* USB Port is Normal mode */
__raw_writel(__raw_readl(S3C2410_MISCCR)&~(1<<12), S3C2410_MISCCR);
/* PHY power enable */
__raw_writel(__raw_readl(S3C_PWRCFG)|(1<<4), S3C_PWRCFG);
/* USB device 2.0 must reset like bellow,
* 1st phy reset and after at least 10us, func_reset & host reset
* phy reset can reset bellow registers.
*/
/* PHY 2.0 S/W reset */
/*Qisda,Leo SJ Yang,2009/09/09{*/
/*Fixed 3G module can not work after running Mass storage*/
// __raw_writel((0<<2)|(0<<1)|(1<<0), S3C_URSTCON);
__raw_writel((0<<2)|(1<<0), S3C_URSTCON);
/*}Qisda,Leo SJ Yang,2009/09/09*/
/*Fixed 3G module can not work after running Mass storage*/
mdelay(1); /* phy reset must be asserted for at 10us */
/*Function 2.0, Host 1.1 S/W reset*/
/*Qisda,Leo SJ Yang,2009/09/09{*/
/*Fixed 3G module can not work after running Mass storage*/
//__raw_writel((1<<2)|(1<<1)|(0<<0), S3C_URSTCON);
//__raw_writel((0<<2)|(0<<1)|(0<<0), S3C_URSTCON);
__raw_writel((1<<2)|(0<<0), S3C_URSTCON);
__raw_writel((0<<2)|(0<<0), S3C_URSTCON);
/*}Qisda,Leo SJ Yang,2009/09/09*/
/*Fixed 3G module can not work after running Mass storage*/
/* 48Mhz,Oscillator,External X-tal,device */
/*Qisda,Leo SJ Yang,2009/09/09{*/
/*Fixed 3G module can not work after running Mass storage*/
// __raw_writel((0<<3)|(1<<2)|(1<<1)|(0<<0), S3C_PHYCTRL);
__raw_writel((0<<3)|(0<<2)|(0<<1)|(0<<0), S3C_PHYCTRL);
/*}Qisda,Leo SJ Yang,2009/09/09*/
/*Fixed 3G module can not work after running Mass storage*/
/* 48Mhz clock on ,PHY2.0 analog block power on
* XO block power on,XO block power in suspend mode,
* PHY 2.0 Pll power on ,suspend signal for save mode disable
*/
__raw_writel((1<<31)|(0<<4)|(0<<3)|(0<<2)|(0<<1)|(0<<0), S3C_PHYPWR);
/* D+ pull up disable(VBUS detect), USB2.0 Function clock Enable,
* USB1.1 HOST disable, USB2.0 PHY test enable
*/
/*Qisda,Leo SJ Yang,2009/09/09{*/
/*Fixed 3G module can not work after running Mass storage*/
//__raw_writel((0<<31)|(1<<2)|(0<<1)|(1<<0), S3C_UCLKCON);
__raw_writel((0<<31)|(1<<2)|(1<<1)|(1<<0), S3C_UCLKCON);
/*}Qisda,Leo SJ Yang,2009/09/09*/
/*Fixed 3G module can not work after running Mass storage*/
__raw_writel(IRQ_USBD, S3C2410_INTPND);
__raw_writel(IRQ_USBD, S3C2410_SRCPND);
reconfig_usbd();
__raw_writel(__raw_readl(S3C2410_INTMSK)&~(IRQ_USBD), S3C2410_INTMSK);
/* D+ pull up , USB2.0 Function clock Enable,
* USB1.1 HOST disable,USB2.0 PHY test enable
*/
/*Qisda,Leo SJ Yang,2009/09/09{*/
/*Fixed 3G module can not work after running Mass storage*/
//__raw_writel((1<<31)|(1<<2)|(0<<1)|(1<<0), S3C_UCLKCON);
__raw_writel((1<<31)|(1<<2)|(1<<1)|(1<<0), S3C_UCLKCON);
/*}Qisda,Leo SJ Yang,2009/09/09*/
/*Fixed 3G module can not work after running Mass storage*/
DEBUG_SETUP("S3C2443 USB Controller Core Initialized\n");
dev->gadget.speed = USB_SPEED_UNKNOWN;
return 0;
}
/*
Register entry point for the peripheral controller driver.
*/
int usb_gadget_register_driver(struct usb_gadget_driver *driver)
{
struct s3c_udc *dev = the_controller;
int retval;
DEBUG_SETUP("%s: %s\n", __FUNCTION__, driver->driver.name);
if (!driver
|| (driver->speed != USB_SPEED_FULL && driver->speed != USB_SPEED_HIGH)
|| !driver->bind
|| !driver->unbind || !driver->disconnect || !driver->setup)
return -EINVAL;
if (!dev)
return -ENODEV;
if (dev->driver)
return -EBUSY;
/* first hook up the driver ... */
dev->driver = driver;
dev->gadget.dev.driver = &driver->driver;
retval = device_add(&dev->gadget.dev);
if(retval) { /* TODO */
printk("target device_add failed, error %d\n", retval);
return retval;
}
retval = driver->bind(&dev->gadget);
if (retval) {
printk("%s: bind to driver %s --> error %d\n", dev->gadget.name,
driver->driver.name, retval);
device_del(&dev->gadget.dev);
dev->driver = 0;
dev->gadget.dev.driver = 0;
return retval;
}
/*Qisda,Leo SJ Yang,2009/08/26 set g_EMUSBTestIsOK=0 when uplug USB{*/
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
create_proc_files();
#endif
/*}Qisda,Leo SJ Yang,2009/08/26 set g_EMUSBTestIsOK=0 when uplug USB*/
enable_irq(IRQ_USBD);
printk("Registered S3C gadget driver '%s'\n", driver->driver.name);
udc_enable(dev);
return 0;
}
EXPORT_SYMBOL(usb_gadget_register_driver);
/*
Unregister entry point for the peripheral controller driver.
*/
int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
{
struct s3c_udc *dev = the_controller;
unsigned long flags;
if (!dev)
return -ENODEV;
if (!driver || driver != dev->driver)
return -EINVAL;
spin_lock_irqsave(&dev->lock, flags);
/*Qisda,Leo SJ Yang,2009/08/26 set g_EMUSBTestIsOK=0 when uplug USB{*/
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
remove_proc_files();
#endif
/*}Qisda,Leo SJ Yang,2009/08/26 set g_EMUSBTestIsOK=0 when uplug USB*/
dev->driver = 0;
stop_activity(dev, driver);
spin_unlock_irqrestore(&dev->lock, flags);
driver->unbind(&dev->gadget);
device_del(&dev->gadget.dev);
disable_irq(IRQ_USBD);
printk("Unregistered S3C gadget driver '%s'\n", driver->driver.name);
udc_disable(dev);
return 0;
}
EXPORT_SYMBOL(usb_gadget_unregister_driver);
/*-------------------------------------------------------------------------*/
/** Write request to FIFO (max write == maxp size)
* Return: 0 = still running, 1 = completed, negative = errno
*/
static int write_fifo(struct s3c_ep *ep, struct s3c_request *req)
{
u32 max;
unsigned count;
int is_last = 0, is_short = 0;
#if TX_DMA_MODE
if(tx_dmaStart) return 0;
if ((req->req.actual == 0) && (req->req.length > ep->ep.maxpacket) && (!tx_dmaStart)) {
DEBUG("TX_DMA_Start:: %s: read %s, bytes req %p %d/%d\n",
__FUNCTION__, ep->ep.name, req, req->req.actual, req->req.length);
usb_set(S3C_DMA_ENABLE,
(u32) S3C_UDC_FCON_REG, ep_index(ep));
usb_write(ep->ep.maxpacket, (u32) S3C_UDC_MAXP_REG, ep_index(ep));
usb_write(ep->ep.maxpacket, (u32) S3C_UDC_BYTE_WRITE_CNT_REG, ep_index(ep));
usb_set((u16)req->req.length,
(u32) S3C_UDC_DMA_TOTAL_CNT1_REG, ep_index(ep));
usb_set((u16)((req->req.length)>>16),
(u32) S3C_UDC_DMA_TOTAL_CNT2_REG, ep_index(ep));
usb_set(virt_to_phys(req->req.buf),
(u32) S3C_UDC_DMA_MEM_BASE_ADDR_REG, ep_index(ep));
usb_set(ep->ep.maxpacket,
(u32) S3C_UDC_DMA_CNT_REG, ep_index(ep));
usb_set(ep->ep.maxpacket,
(u32) S3C_UDC_DMA_FIFO_CNT_REG, ep_index(ep));
usb_set(S3C_MAX_BURST_INCR16,
(u32) S3C_UDC_DMA_IF_CON_REG, ep_index(ep));
usb_set(S3C_DMA_FLY_ENABLE|S3C_DMA_TX_START|S3C_USB_DMA_MODE,
(u32) S3C_UDC_DMA_CON_REG, ep_index(ep));
tx_dmaStart = 1;
udelay(600);
}
else {
#endif
max = le16_to_cpu(ep->desc->wMaxPacketSize);
count = write_packet(ep, req, max);
/* 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 req %p %d/%d\n", __FUNCTION__,
ep->ep.name, count,
is_last ? "/L" : "", is_short ? "/S" : "",
req, req->req.actual, req->req.length);
#if TX_DMA_MODE
}
#endif
/* requests complete when all IN data is in the FIFO */
if (is_last) {
if(!ep_index(ep)){
DEBUG("%s: --> Error EP0 must not come here!\n",
__FUNCTION__);
BUG();
}
done(ep, req, 0);
return 1;
}
return 0;
}
/** Read to request from FIFO (max read == bytes in fifo)
* Return: 0 = still running, 1 = completed, negative = errno
*/
static int read_fifo(struct s3c_ep *ep, struct s3c_request *req)
{
u32 csr;
u16 *buf;
unsigned bufferspace, count, count_bytes, is_short = 0;
u32 fifo = ep->fifo;
csr = usb_read( (u32) S3C_UDC_EP_STATUS_REG, ep_index(ep));
/* make sure there's a packet in the FIFO. */
if (!(csr & S3C_UDC_EP_RX_SUCCESS)) {
DEBUG("%s: Packet NOT ready!\n", __FUNCTION__);
return -EINVAL;
}
buf = req->req.buf + req->req.actual;
prefetchw(buf);
bufferspace = req->req.length - req->req.actual;
/* read all bytes from this packet */
count = usb_read((u32) S3C_UDC_BYTE_READ_CNT_REG, ep_index(ep));
if (csr & S3C_UDC_EP_LWO)
count_bytes = count * 2 -1;
else
count_bytes = count * 2;
#if RX_DMA_MODE
if(rx_dmaStart) return 0;
if ((req->req.actual == 0) && (req->req.length > ep->ep.maxpacket) && (!rx_dmaStart)) {
DEBUG("RX_DMA_Start :: %s: read %s, %d bytes req %p %d/%d CSR::0x%x\n",
__FUNCTION__, ep->ep.name, count_bytes, req, req->req.actual, req->req.length, csr);
usb_set(S3C_DMA_ENABLE,
(u32) S3C_UDC_FCON_REG, ep_index(ep));
usb_set((u16)req->req.length,
(u32) S3C_UDC_DMA_TOTAL_CNT1_REG, ep_index(ep));
usb_set((u16)((req->req.length)>>16),
(u32) S3C_UDC_DMA_TOTAL_CNT2_REG, ep_index(ep));
usb_set(ep->ep.maxpacket,
(u32) S3C_UDC_DMA_CNT_REG, ep_index(ep));
//usb_set(512,
//(u32) S3C_UDC_DMA_FIFO_CNT_REG, ep_index(ep));
usb_set(S3C_MAX_BURST_INCR16,
(u32) S3C_UDC_DMA_IF_CON_REG, ep_index(ep));
usb_set(virt_to_phys(buf),
(u32) S3C_UDC_DMA_MEM_BASE_ADDR_REG, ep_index(ep));
usb_set(S3C_DMA_FLY_ENABLE|S3C_DMA_RX_START|S3C_USB_DMA_MODE,
(u32) S3C_UDC_DMA_CON_REG, ep_index(ep));
rx_dmaStart = 1;
}
else {
#endif
req->req.actual += min(count_bytes, bufferspace);
is_short = (count_bytes < ep->ep.maxpacket);
DEBUG("%s: read %s, %d bytes%s req %p %d/%d\n",
__FUNCTION__,
ep->ep.name, count_bytes,
is_short ? "/S" : "", req, req->req.actual, req->req.length);
while (likely(count-- != 0)) {
u16 byte = (u16) __raw_readl(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)
printk("%s overflow %d\n", ep->ep.name, count);
req->req.status = -EOVERFLOW;
} else {
*buf++ = byte;
bufferspace--;
}
}
#if RX_DMA_MODE
}
#endif
/* 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;
}
/*
* done - retire a request; caller blocked irqs
*/
static void done(struct s3c_ep *ep, struct s3c_request *req, int status)
{
unsigned int stopped = ep->stopped;
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;
spin_unlock(&ep->dev->lock);
req->req.complete(&ep->ep, &req->req);
spin_lock(&ep->dev->lock);
ep->stopped = stopped;
}
/*
* nuke - dequeue ALL requests
*/
void nuke(struct s3c_ep *ep, int status)
{
struct s3c_request *req;
DEBUG("%s: %p\n", __FUNCTION__, ep);
/* called with irqs blocked */
while (!list_empty(&ep->queue)) {
req = list_entry(ep->queue.next, struct s3c_request, queue);
done(ep, req, status);
}
}
/**
* s3c_in_epn - handle IN interrupt
*/
static void s3c_in_epn(struct s3c_udc *dev, u32 ep_idx)
{
u32 csr;
struct s3c_ep *ep = &dev->ep[ep_idx];
struct s3c_request *req;
csr = usb_read((u32) S3C_UDC_EP_STATUS_REG, ep_idx);
DEBUG("%s: S3C_UDC_EP%d_STATUS_REG=0x%x\n", __FUNCTION__, ep_idx, csr);
if (csr & S3C_UDC_EP_STALL) {
DEBUG("%s: S3C_UDC_EP_STALL\n", __FUNCTION__);
usb_set(S3C_UDC_EP_STALL, (u32) S3C_UDC_EP_STATUS_REG, ep_idx);
return;
}
if (!ep->desc) {
DEBUG("%s: NO EP DESC\n", __FUNCTION__);
return;
}
if (csr & S3C_UDC_EP_DTCZ) {
DEBUG("%s: TX_DMA :: DMA Total Count Zero:: S3C_UDC_EP%d_STATUS_REG=0x%x\n",
__FUNCTION__, ep_index(ep), csr);
tx_dmaStart = 0;
usb_set(S3C_DMA_DISABLE,
(u32) S3C_UDC_FCON_REG, ep_idx);
usb_set(S3C_DMA_TX_STOP|S3C_USB_INT_MODE,
(u32) S3C_UDC_DMA_CON_REG, ep_idx);
usb_set(S3C_UDC_EP_DTCZ, (u32) S3C_UDC_EP_STATUS_REG, ep_idx);
if (list_empty(&ep->queue))
req = 0;
else
req = list_entry(ep->queue.next,
struct s3c_request, queue);
if (unlikely(!req)) {
DEBUG("%s: TX_DMA - NULL REQ (ep%d)\n", __FUNCTION__, ep_idx);
//return;
} else {
DEBUG("%s: TX_DMA_DONE - REQ is %p (%d/%d) CSR:0x%x\n", __FUNCTION__, req, req->req.actual, req->req.length, csr);
req->req.actual = req->req.length;
done(ep, req, 0);
}
}
if (csr & S3C_UDC_EP_TX_SUCCESS) {
usb_set(S3C_UDC_EP_TX_SUCCESS,
(u32) S3C_UDC_EP_STATUS_REG, ep_idx);
if (list_empty(&ep->queue))
req = 0;
else
req = list_entry(ep->queue.next, struct s3c_request, queue);
if (unlikely(!req)) {
DEBUG("%s:NULL REQ :: EP_TX_SUCCESS, req = %p CSR:0x%x\n", __FUNCTION__, req, csr);
return;
}
else {
DEBUG("%s: EP_TX_SUCCESS, req = %p CSR:0x%x\n", __FUNCTION__, req, csr);
if ((write_fifo(ep, req)==0) && (csr & S3C_UDC_EP_PSIF_TWO))
write_fifo(ep, req);
}
}
}
/* ********************************************************************************************* */
/* Bulk OUT (recv)
*/
static void s3c_out_epn(struct s3c_udc *dev, u32 ep_idx)
{
struct s3c_ep *ep = &dev->ep[ep_idx];
struct s3c_request *req;
u32 csr;
csr=usb_read((u32) S3C_UDC_EP_STATUS_REG, ep_index(ep));
DEBUG("%s: S3C_UDC_EP%d_STATUS_REG=0x%x\n",
__FUNCTION__, ep_index(ep), csr);
if (unlikely(!(ep->desc))) {
/* Throw packet away.. */
printk("%s: No descriptor?!?\n", __FUNCTION__);
return;
}
if (csr & S3C_UDC_EP_STALL) {
DEBUG("%s: stall sent\n", __FUNCTION__);
usb_set(S3C_UDC_EP_STALL, (u32) S3C_UDC_EP_STATUS_REG, ep_idx);
return;
}
if (csr & S3C_UDC_EP_FIFO_FLUSH) {
DEBUG("%s: fifo flush \n", __FUNCTION__);
usb_set(S3C_UDC_EP_FIFO_FLUSH, (u32) S3C_UDC_EP_CON_REG, ep_idx);
return;
}
if (csr & S3C_UDC_EP_DTCZ) {
DEBUG("%s: DMA Total Count Zero:: S3C_UDC_EP%d_STATUS_REG=0x%x\n",
__FUNCTION__, ep_index(ep), csr);
rx_dmaStart = 0;
usb_set(S3C_DMA_DISABLE,
(u32) S3C_UDC_FCON_REG, ep_idx);
usb_set(S3C_DMA_RX_STOP|S3C_USB_INT_MODE,
(u32) S3C_UDC_DMA_CON_REG, ep_idx);
usb_set(S3C_UDC_EP_DTCZ, (u32) S3C_UDC_EP_STATUS_REG, ep_idx);
if (list_empty(&ep->queue))
req = 0;
else
req = list_entry(ep->queue.next,
struct s3c_request, queue);
if (unlikely(!req)) {
DEBUG("%s : RX_DMA - NULL REQ (ep%d)\n", __FUNCTION__, ep_idx);
} else {
DEBUG("%s : RX_DMA_DONE - REQ : %p\n", __FUNCTION__, req);
req->req.actual = req->req.length;
done(ep, req, 0);
}
}
if (csr & S3C_UDC_EP_RX_SUCCESS) {
if(!rx_dmaStart) {
if (list_empty(&ep->queue))
req = 0;
else
req = list_entry(ep->queue.next,
struct s3c_request, queue);
if (unlikely(!req)) {
DEBUG("%s: NULL REQ on ISR %d\n", __FUNCTION__, ep_idx);
return;
} else {
if(((read_fifo(ep, req))==0) && (csr & S3C_UDC_EP_PSIF_TWO))
read_fifo(ep, req);
}
}
}
}
static void stop_activity(struct s3c_udc *dev,
struct usb_gadget_driver *driver)
{
int i;
/* 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 < S3C_MAX_ENDPOINTS; i++) {
struct s3c_ep *ep = &dev->ep[i];
ep->stopped = 1;
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);
}
static void reconfig_usbd(void)
{
__raw_writel(0x04, S3C_UDC_EP_DIR_REG); /* EP1:OUT, EP2:IN */
/* EP0~2 Interrupt enable */
__raw_writel(0x7, S3C_UDC_EP_INT_EN_REG);
__raw_writel(0x0000, S3C_UDC_TEST_REG);
/* error interrupt enable, 16bit bus, Little format,
* suspend&reset enable
*/
__raw_writel(S3C_UDC_DTZIEN_EN|S3C_UDC_RRD_EN
|S3C_UDC_SUS_EN|S3C_UDC_RST_EN,
S3C_UDC_SYS_CON_REG);
__raw_writel(0x0000, S3C_UDC_EP0_CON_REG);
/* EP1, EP2 dual FIFO mode enable */
/*Qisda qube for fix mass storage bug*/
// usb_write(0x0080, (u32) S3C_UDC_EP_CON_REG, 1);
/*Qisda qube for fix mass storage bug*/
usb_write(0x0080, (u32) S3C_UDC_EP_CON_REG, 2);
__raw_writel(0, S3C_UDC_INDEX_REG);
}
void set_max_pktsize(struct s3c_udc *dev, enum usb_device_speed speed)
{
if (speed == USB_SPEED_HIGH)
{
ep0_fifo_size = 64;
ep_fifo_size = 512;
ep_fifo_size2 = 1024;
dev->gadget.speed = USB_SPEED_HIGH;
}
else
{
ep0_fifo_size = 64;
ep_fifo_size = 64;
ep_fifo_size2 = 64;
dev->gadget.speed = USB_SPEED_FULL;
}
dev->ep[0].ep.maxpacket = ep0_fifo_size;
dev->ep[1].ep.maxpacket = ep_fifo_size;
dev->ep[2].ep.maxpacket = ep_fifo_size;
dev->ep[3].ep.maxpacket = ep_fifo_size;
dev->ep[4].ep.maxpacket = ep_fifo_size;
dev->ep[5].ep.maxpacket = ep_fifo_size2;
dev->ep[6].ep.maxpacket = ep_fifo_size2;
dev->ep[7].ep.maxpacket = ep_fifo_size2;
dev->ep[8].ep.maxpacket = ep_fifo_size2;
usb_write(ep0_fifo_size, (u32) S3C_UDC_MAXP_REG, 0);
usb_write(ep_fifo_size, (u32) S3C_UDC_MAXP_REG, 1);
usb_write(ep_fifo_size, (u32) S3C_UDC_MAXP_REG, 2);
usb_write(ep_fifo_size, (u32) S3C_UDC_MAXP_REG, 3);
usb_write(ep_fifo_size, (u32) S3C_UDC_MAXP_REG, 4);
usb_write(ep_fifo_size2, (u32) S3C_UDC_MAXP_REG, 5);
usb_write(ep_fifo_size2, (u32) S3C_UDC_MAXP_REG, 6);
usb_write(ep_fifo_size2, (u32) S3C_UDC_MAXP_REG, 7);
usb_write(ep_fifo_size2, (u32) S3C_UDC_MAXP_REG, 8);
}
/*
* elfin usb client interrupt handler.
*/
static irqreturn_t s3c_udc_irq(int irq, void *_dev)
{
struct s3c_udc *dev = _dev;
u32 intr_out;
u32 intr_in;
u32 intr_status, intr_status_chk;
spin_lock(&dev->lock);
intr_status = __raw_readl(S3C_UDC_SYS_STATUS_REG);
intr_out = intr_in = __raw_readl(S3C_UDC_EP_INT_REG);
DEBUG_SETUP("\n\n%s: S3C_UDC_EP_INT_REG=0x%x, S3C_UDC_SYS_STATUS_REG=0x%x(on state %s)\n",
__FUNCTION__, intr_out, intr_status, state_names[dev->ep0state]);
/* We have only 3 usable eps now */
intr_status_chk = intr_status & S3C_UDC_INT_CHECK;
intr_in &= (S3C_UDC_INT_EP2 | S3C_UDC_INT_EP0);
intr_out &= S3C_UDC_INT_EP1;
if (!intr_out && !intr_in && !intr_status_chk){
spin_unlock(&dev->lock);
return IRQ_HANDLED;
}
if (intr_status) {
if (intr_status & S3C_UDC_INT_VBUSON) {
DEBUG_SETUP("%s: VBUSON interrupt\n", __FUNCTION__);
__raw_writel(S3C_UDC_INT_VBUSON, S3C_UDC_SYS_STATUS_REG);
}
if (intr_status & S3C_UDC_INT_ERR) {
DEBUG_SETUP("%s: Error interrupt\n", __FUNCTION__);
__raw_writel(S3C_UDC_INT_ERR, S3C_UDC_SYS_STATUS_REG);
}
if (intr_status & S3C_UDC_INT_SDE) {
DEBUG_SETUP("%s: Speed Detection interrupt\n",
__FUNCTION__);
__raw_writel(S3C_UDC_INT_SDE, S3C_UDC_SYS_STATUS_REG);
if (intr_status & S3C_UDC_INT_HSP) {
DEBUG_SETUP("%s: High Speed Detection\n",
__FUNCTION__);
set_max_pktsize(dev, USB_SPEED_HIGH);
}
else {
DEBUG_SETUP("%s: Full Speed Detection\n",
__FUNCTION__);
set_max_pktsize(dev, USB_SPEED_FULL);
}
}
if (intr_status & S3C_UDC_INT_SUSPEND) {
/*Qisda,Leo SJ Yang,2009/08/26 set g_EMUSBTestIsOK=0 when uplug USB{*/
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
g_EMUSBTestIsOK=0;
/*Qisda,Leo SJ Yang,2009/10/26*/
/*send key code F6 1 when USB plugin*/
/*send key code F6 0 when USB unplugin*/
/*send key code F6 0 when USB safety remove USB{*/
/*Qisda,Leo SJ Yang,2009/11/13*/
/*prevent from sending saftremove event to MMI when the event to be occured is not the action of saftremove{*/
#ifdef QISDA
if((intr_status&S3C_UDC_INT_VBUSON)==0)
USB_SaftRemove_keypad_message_to_ap(0);
#endif
/*}Qisda,Leo SJ Yang,2009/11/13*/
#endif
/*}Qisda,Leo SJ Yang,2009/08/26 set g_EMUSBTestIsOK=0 when uplug USB*/
DEBUG_SETUP("%s: SUSPEND interrupt\n", __FUNCTION__);
__raw_writel(S3C_UDC_INT_SUSPEND, S3C_UDC_SYS_STATUS_REG);
if (dev->gadget.speed != USB_SPEED_UNKNOWN
&& dev->driver
&& dev->driver->suspend) {
dev->driver->suspend(&dev->gadget);
}
}
if (intr_status & S3C_UDC_INT_RESUME) {
DEBUG_SETUP("%s: RESUME interrupt\n", __FUNCTION__);
__raw_writel(S3C_UDC_INT_RESUME, S3C_UDC_SYS_STATUS_REG);
if (dev->gadget.speed != USB_SPEED_UNKNOWN
&& dev->driver
&& dev->driver->resume) {
dev->driver->resume(&dev->gadget);
}
}
if (intr_status & S3C_UDC_INT_RESET) {
DEBUG_SETUP("%s: RESET interrupt\n", __FUNCTION__);
__raw_writel(S3C_UDC_INT_RESET, S3C_UDC_SYS_STATUS_REG);
reconfig_usbd();
dev->ep0state = WAIT_FOR_SETUP;
}
}
if (intr_in) {
if (intr_in & S3C_UDC_INT_EP0){
__raw_writel(S3C_UDC_INT_EP0, S3C_UDC_EP_INT_REG);
s3c_handle_ep0(dev);
}else if (intr_in & S3C_UDC_INT_EP2){
__raw_writel(S3C_UDC_INT_EP2, S3C_UDC_EP_INT_REG);
s3c_in_epn(dev, 2); // hard coded !!!
}else{
__raw_writel(S3C_UDC_INT_EP3, S3C_UDC_EP_INT_REG);
s3c_in_epn(dev, 3); // hard coded !!!
}
}
if (intr_out) {
usb_write(S3C_UDC_INT_EP1, (u32) S3C_UDC_EP_INT_REG, 1);
s3c_out_epn(dev, 1); // hard coded !!!
}
__raw_writel(IRQ_USBD, S3C2410_INTPND);
__raw_writel(IRQ_USBD, S3C2410_SRCPND);
spin_unlock(&dev->lock);
return IRQ_HANDLED;
}
static int s3c_ep_enable(struct usb_ep *_ep,
const struct usb_endpoint_descriptor *desc)
{
struct s3c_ep *ep;
struct s3c_udc *dev;
unsigned long flags;
DEBUG("%s: %p\n", __FUNCTION__, _ep);
ep = container_of(_ep, struct s3c_ep, ep);
if (!_ep || !desc || ep->desc || _ep->name == ep0name
|| desc->bDescriptorType != USB_DT_ENDPOINT
|| ep->bEndpointAddress != desc->bEndpointAddress
|| ep_maxpacket(ep) < le16_to_cpu(desc->wMaxPacketSize)) {
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;
}
/* hardware _could_ do smaller, but driver doesn't */
if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
&& le16_to_cpu(desc->wMaxPacketSize) != ep_maxpacket(ep))
|| !desc->wMaxPacketSize) {
DEBUG("%s: bad %s maxpacket\n", __FUNCTION__, _ep->name);
return -ERANGE;
}
dev = ep->dev;
if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
DEBUG("%s: bogus device state\n", __FUNCTION__);
return -ESHUTDOWN;
}
spin_lock_irqsave(&ep->dev->lock, flags);
ep->stopped = 0;
ep->desc = desc;
ep->pio_irqs = 0;
ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
/* Reset halt state */
s3c_set_halt(_ep, 0);
spin_unlock_irqrestore(&ep->dev->lock, flags);
DEBUG("%s: enabled %s\n", __FUNCTION__, _ep->name);
return 0;
}
/** Disable EP
*/
static int s3c_ep_disable(struct usb_ep *_ep)
{
struct s3c_ep *ep;
unsigned long flags;
DEBUG("%s: %p\n", __FUNCTION__, _ep);
ep = container_of(_ep, struct s3c_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);
/* Nuke all pending requests */
nuke(ep, -ESHUTDOWN);
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 *s3c_alloc_request(struct usb_ep *ep,
gfp_t gfp_flags)
{
struct s3c_request *req;
DEBUG("%s: %p\n", __FUNCTION__, ep);
req = kmalloc(sizeof *req, gfp_flags);
if (!req)
return 0;
memset(req, 0, sizeof *req);
INIT_LIST_HEAD(&req->queue);
return &req->req;
}
static void s3c_free_request(struct usb_ep *ep, struct usb_request *_req)
{
struct s3c_request *req;
DEBUG("%s: %p\n", __FUNCTION__, ep);
req = container_of(_req, struct s3c_request, req);
WARN_ON(!list_empty(&req->queue));
kfree(req);
}
static void *s3c_alloc_buffer(struct usb_ep *ep, unsigned bytes,
dma_addr_t * dma, gfp_t gfp_flags)
{
char *retval;
DEBUG("%s (%p, %d, %d)\n", __FUNCTION__, ep, bytes, gfp_flags);
retval = kmalloc(bytes, gfp_flags & ~(__GFP_DMA | __GFP_HIGHMEM));
if (retval)
*dma = virt_to_dma(NULL, retval);
return retval;
}
static void s3c_free_buffer(struct usb_ep *ep, void *buf, dma_addr_t dma,
unsigned bytes)
{
DEBUG("%s: %p\n", __FUNCTION__, ep);
kfree(buf);
}
/** Queue one request
* Kickstart transfer if needed
*/
static int s3c_queue(struct usb_ep *_ep, struct usb_request *_req,
gfp_t gfp_flags)
{
struct s3c_request *req;
struct s3c_ep *ep;
struct s3c_udc *dev;
unsigned long flags;
DEBUG("%s: %p\n", __FUNCTION__, _ep);
req = container_of(_req, struct s3c_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 s3c_ep, ep);
if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
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: %s queue req %p, len %d buf %p\n",
__FUNCTION__, _ep->name, _req, _req->length, _req->buf);
spin_lock_irqsave(&dev->lock, flags);
_req->status = -EINPROGRESS;
_req->actual = 0;
/* kickstart this i/o queue? */
DEBUG("%s: Add to ep=%d, Q empty=%d, stopped=%d\n",
__FUNCTION__, ep_index(ep), list_empty(&ep->queue), ep->stopped);
if (list_empty(&ep->queue) && likely(!ep->stopped)) {
u32 csr;
if (unlikely(ep_index(ep) == 0)) {
/* EP0 */
list_add_tail(&req->queue, &ep->queue);
s3c_ep0_kick(dev, ep);
req = 0;
} else if (ep_is_in(ep)) {
csr = usb_read((u32) S3C_UDC_EP_STATUS_REG, ep_index(ep));
DEBUG("%s: ep_is_in, S3C_UDC_EP%d_STATUS_REG=0x%x\n",
__FUNCTION__, ep_index(ep), csr);
if(!(csr & S3C_UDC_EP_TX_SUCCESS)
&& (write_fifo(ep, req) == 1))
req = 0;
else
DEBUG("IN-list_add_taill :: req =%p\n", req);
} else {
csr = usb_read((u32) S3C_UDC_EP_STATUS_REG, ep_index(ep));
DEBUG("%s: ep_is_out, S3C_UDC_EP%d_STATUS_REG=0x%x\n",
__FUNCTION__, ep_index(ep),csr);
if((csr & S3C_UDC_EP_RX_SUCCESS)
&& (read_fifo(ep, req) == 1))
req = 0;
else
DEBUG("OUT-list_add_taill :: req =%p\n", req);
}
}
/* pio or dma irq handler advances the queue. */
if (likely(req != 0))
list_add_tail(&req->queue, &ep->queue);
spin_unlock_irqrestore(&dev->lock, flags);
return 0;
}
/* dequeue JUST ONE request */
static int s3c_dequeue(struct usb_ep *_ep, struct usb_request *_req)
{
struct s3c_ep *ep;
struct s3c_request *req;
unsigned long flags;
DEBUG("%s: %p\n", __FUNCTION__, _ep);
ep = container_of(_ep, struct s3c_ep, ep);
if (!_ep || ep->ep.name == ep0name)
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;
}
/** Halt specific EP
* Return 0 if success
*/
static int s3c_set_halt(struct usb_ep *_ep, int value)
{
return 0;
}
/** Return bytes in EP FIFO
*/
static int s3c_fifo_status(struct usb_ep *_ep)
{
u32 csr;
int count = 0;
struct s3c_ep *ep;
ep = container_of(_ep, struct s3c_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;
csr = usb_read((u32) S3C_UDC_EP_STATUS_REG, ep_index(ep));
if (ep->dev->gadget.speed != USB_SPEED_UNKNOWN ||
csr & S3C_UDC_EP_RX_SUCCESS) {
count = usb_read((u32) S3C_UDC_BYTE_READ_CNT_REG, ep_index(ep));
if (usb_read((u32) S3C_UDC_EP_STATUS_REG, ep_index(ep))
& S3C_UDC_EP_LWO)
count = count * 2 -1;
else
count = count * 2;
}
return count;
}
/** Flush EP FIFO
*/
static void s3c_fifo_flush(struct usb_ep *_ep)
{
struct s3c_ep *ep;
ep = container_of(_ep, struct s3c_ep, ep);
if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
DEBUG("%s: bad ep\n", __FUNCTION__);
return;
}
DEBUG("%s: %d\n", __FUNCTION__, ep_index(ep));
}
/****************************************************************/
/* End Point 0 related functions */
/****************************************************************/
/* return: 0 = still running, 1 = completed, negative = errno */
static int write_fifo_ep0(struct s3c_ep *ep, struct s3c_request *req)
{
u32 max;
unsigned count;
int is_last;
max = ep_maxpacket(ep);
DEBUG_EP0("%s: max = %d\n", __FUNCTION__, max);
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) {
return 1;
}
return 0;
}
static __inline__ int s3c_fifo_read(struct s3c_ep *ep, u16 *cp, int max)
{
int bytes;
int count;
count = usb_read((u32) S3C_UDC_BYTE_READ_CNT_REG, ep_index(ep));
DEBUG_EP0("%s: count=%d, ep_index=%d, fifo=0x%x\n",
__FUNCTION__, count, ep_index(ep), ep->fifo);
bytes = count * 2;
if (bytes != max){
printk("bytes=%d max=%d\n", bytes, max);
count = 4;
}
while (count--) {
*cp++ = (u16) __raw_readl(S3C_UDC_EP0_FIFO_REG);
}
__raw_writel(S3C_UDC_EP0_RX_SUCCESS, S3C_UDC_EP0_STATUS_REG);/* clear */
return bytes;
}
static int read_fifo_ep0(struct s3c_ep *ep, struct s3c_request *req)
{
u32 csr;
u16 *buf;
unsigned bufferspace, count, is_short, bytes;
u32 fifo = ep->fifo;
DEBUG_EP0("%s\n", __FUNCTION__);
csr = __raw_readl(S3C_UDC_EP0_STATUS_REG);
if (!(csr & S3C_UDC_EP0_RX_SUCCESS))
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 & S3C_UDC_EP0_RX_SUCCESS)) {
count = usb_read((u32) S3C_UDC_BYTE_READ_CNT_REG, ep_index(ep));
if (csr & S3C_UDC_EP0_LWO)
bytes = count * 2 -1;
else
bytes = count * 2;
req->req.actual += min(bytes, bufferspace);
} else { // zlp
count = 0;
bytes = 0;
}
is_short = (bytes < ep->ep.maxpacket);
DEBUG_EP0("%s: read %s %02x, %d bytes%s req %p %d/%d\n",
__FUNCTION__,
ep->ep.name, csr, bytes,
is_short ? "/S" : "", req, req->req.actual, req->req.length);
while (likely(count-- != 0)) {
u16 byte = (u16) __raw_readl(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 = bufferspace - 2;
}
}
__raw_writel(S3C_UDC_EP0_RX_SUCCESS, S3C_UDC_EP0_STATUS_REG);/* clear */
/* completion */
if (is_short || req->req.actual == req->req.length) {
return 1;
}
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 s3c_udc *dev, unsigned char address)
{
DEBUG_EP0("%s: address=%d, S3C_UDC_FUNC_ADDR_REG=0x%x\n",
__FUNCTION__, address, __raw_readl(S3C_UDC_FUNC_ADDR_REG));
dev->usb_address = address;
}
/*
* DATA_STATE_RECV (OUT_PKT_RDY)
*/
static int first_time = 1;
static void s3c_ep0_read(struct s3c_udc *dev)
{
struct s3c_request *req;
struct s3c_ep *ep = &dev->ep[0];
int ret;
if (!list_empty(&ep->queue))
req = list_entry(ep->queue.next, struct s3c_request, queue);
else {
DEBUG_EP0("%s: ---> BUG\n", __FUNCTION__);
BUG(); //logic ensures -jassi
return;
}
DEBUG_EP0("%s: req.length = 0x%x, req.actual = 0x%x\n",
__FUNCTION__, req->req.length, req->req.actual);
if(req->req.length == 0) {
__raw_writel(S3C_UDC_EP0_RX_SUCCESS, S3C_UDC_EP0_STATUS_REG);
dev->ep0state = WAIT_FOR_SETUP;
first_time = 1;
done(ep, req, 0);
return;
}
if(!req->req.actual && first_time){ //for SetUp packet
__raw_writel(S3C_UDC_EP0_RX_SUCCESS, S3C_UDC_EP0_STATUS_REG);
first_time = 0;
return;
}
ret = read_fifo_ep0(ep, req);
if (ret) {
dev->ep0state = WAIT_FOR_SETUP;
first_time = 1;
done(ep, req, 0);
return;
}
}
/*
* DATA_STATE_XMIT
*/
static int s3c_ep0_write(struct s3c_udc *dev)
{
struct s3c_request *req;
struct s3c_ep *ep = &dev->ep[0];
int ret, need_zlp = 0;
DEBUG_EP0("%s: ep0 write\n", __FUNCTION__);
if (list_empty(&ep->queue))
req = 0;
else
req = list_entry(ep->queue.next, struct s3c_request, queue);
if (!req) {
DEBUG_EP0("%s: NULL REQ\n", __FUNCTION__);
return 0;
}
DEBUG_EP0("%s: req.length = 0x%x, req.actual = 0x%x\n",
__FUNCTION__, req->req.length, req->req.actual);
if (req->req.length == 0) {
dev->ep0state = WAIT_FOR_SETUP;
done(ep, req, 0);
return 1;
}
if (req->req.length - req->req.actual == ep0_fifo_size) {
/* 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__);
dev->ep0state = WAIT_FOR_SETUP;
} else {
DEBUG_EP0("%s: not finished\n", __FUNCTION__);
}
if (need_zlp) {
DEBUG_EP0("%s: Need ZLP!\n", __FUNCTION__);
dev->ep0state = DATA_STATE_NEED_ZLP;
}
if(ret)
done(ep, req, 0);
return 1;
}
/*
* WAIT_FOR_SETUP (OUT_PKT_RDY)
*/
static void s3c_ep0_setup(struct s3c_udc *dev, u32 csr)
{
struct s3c_ep *ep = &dev->ep[0];
struct usb_ctrlrequest ctrl = {0};
int i, bytes, is_in;
#ifdef USB_TEST_MODE
#define TEST_PKT_SIZE 53
#define TEST_ARR_SIZE 54
/* Test Mode Selector*/
#define TEST_J 1
#define TEST_K 2
#define TEST_SE0_NAK 3
#define TEST_PACKET 4
#define TEST_FORCE_ENABLE 5
#endif
DEBUG_SETUP("%s: csr = 0x%x\n", __FUNCTION__, csr);
/* Nuke all previous transfers */
nuke(ep, -EPROTO);
/* read control req from fifo (8 bytes) */
bytes = s3c_fifo_read(ep, (u16 *)&ctrl, 8);
DEBUG_SETUP("Read CTRL REQ %d bytes\n", bytes);
DEBUG_SETUP("CTRL.bRequestType = 0x%x (is_in %d)\n", ctrl.bRequestType,
ctrl.bRequestType & USB_DIR_IN);
DEBUG_SETUP("CTRL.bRequest = 0x%x\n", ctrl.bRequest);
DEBUG_SETUP("CTRL.wLength = 0x%x\n", ctrl.wLength);
DEBUG_SETUP("CTRL.wValue = 0x%x (%d)\n", ctrl.wValue, ctrl.wValue >> 8);
DEBUG_SETUP("CTRL.wIndex = 0x%x\n", ctrl.wIndex);
/* Set direction of EP0 */
if (likely(ctrl.bRequestType & USB_DIR_IN)) {
ep->bEndpointAddress |= USB_DIR_IN;
is_in = 1;
} else {
ep->bEndpointAddress &= ~USB_DIR_IN;
is_in = 0;
}
dev->req_pending = 1;
/* Handle some SETUP packets ourselves */
switch (ctrl.bRequest) {
case USB_REQ_SET_ADDRESS:
if (ctrl.bRequestType
!= (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
break;
/*Qisda,Leo SJ Yang,2009/07/28 add /proc/driver/udc for EM mode{*/
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
g_EMUSBTestIsOK=1;
#ifdef QISDA
USB_SaftRemove_keypad_message_to_ap(1);
#endif
#endif
/*}Qisda,Leo SJ Yang,2009/07/28 add /proc/driver/udc for EM mode*/
DEBUG_SETUP("%s: USB_REQ_SET_ADDRESS (%d)\n",
__FUNCTION__, ctrl.wValue);
udc_set_address(dev, ctrl.wValue);
return;
#ifdef USB_TEST_MODE
case USB_REQ_SET_FEATURE:
{
u8 cvalue=(u8)(ctrl.wValue&0xff);
printk ("USB_REQ_SET_FEATURE %x\n",ctrl.wValue&0xff);
if (cvalue==0x2)
{
u32 testreg;
u8 cIndex_L=(u8)(ctrl.wIndex&0xff);
u8 cIndex_H=(u8)(ctrl.wIndex>>8);
printk ("USB_REQ_SET_FEATURE %x %x\n",cIndex_L,cIndex_H);
if ((0 !=cIndex_L) ||(0 != ctrl.bRequestType))
{
printk ("USB_REQ_SET_FEATURE %x %x\n",cIndex_L,cIndex_H);
break;
}
// Set TEST MODE
testreg=__raw_readl(S3C_UDC_TEST_REG);
testreg=testreg|0x10;
__raw_writel(testreg,S3C_UDC_TEST_REG);
switch(cIndex_H)
{
case TEST_J:
printk ("TEST_J\n");
testreg=__raw_readl(S3C_UDC_TEST_REG);
testreg=testreg|0x2;
__raw_writel(testreg,S3C_UDC_TEST_REG);
break;
case TEST_K:
printk ("TEST_K\n");
//Set Test K
testreg=__raw_readl(S3C_UDC_TEST_REG);
testreg=testreg|0x4;
__raw_writel(testreg,S3C_UDC_TEST_REG);
printk ("TEST_K\n");
break;
case TEST_SE0_NAK:
printk ("TEST_SE0_NAK\n");
testreg=__raw_readl(S3C_UDC_TEST_REG);
testreg=testreg|0x1;
__raw_writel(testreg,S3C_UDC_TEST_REG);
printk ("TEST_SE0_NAK\n");
break;
case TEST_PACKET:
{
int count=0;
u8 *pahwTestPkt;
u8 ahwTestPkt [TEST_ARR_SIZE] = {
0x00,0x00, 0x00,0x00, 0x00,0x00,
0x00,0xAA, 0xAA,0xAA, 0xAA,0xAA, 0xAA,0xAA,
0xAA,0xEE, 0xEE,0xEE, 0xEE,0xEE, 0xEE,0xEE,
0xEE,0xFE, 0xFF,0xFF, 0xFF,0xFF, 0xFF,0xFF,
0xFF,0xFF, 0xFF,0xFF, 0xFF,0x7F, 0xBF,0xDF,
0xEF,0xF7, 0xFB,0xFD, 0xFC,0x7E, 0xBF,0xDF,
0xEF,0xF7, 0xFB,0xFD, 0x7E,0x00, 0x00,0x00
};
pahwTestPkt=ahwTestPkt;
printk ("Test_packet\n");
usb_write(TEST_PKT_SIZE, (u32) S3C_UDC_BYTE_WRITE_CNT_REG, ep_index(ep));
for (count=0;count<(TEST_PKT_SIZE+1);count+=2) {
__raw_writel((((*(pahwTestPkt+1))<<8)|*pahwTestPkt), S3C_UDC_EP0_FIFO_REG);
pahwTestPkt=pahwTestPkt+2;
} //Set Test K
testreg=__raw_readl(S3C_UDC_TEST_REG);
testreg=testreg|0x8;
__raw_writel(testreg,S3C_UDC_TEST_REG);
printk ("tr=%0X\n", testreg);
}
break;
}
dev->ep0state = WAIT_FOR_SETUP;
return;
}
}
break;
#endif
default:
DEBUG_SETUP("%s: DFAULT\n", __FUNCTION__);
break;
}
if (likely(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 (i < 0) {
/* setup processing failed, force stall */
printk("%s: --> ERROR: gadget setup FAILED (stalling), setup returned %d\n",
__FUNCTION__, i);
/* ep->stopped = 1; */
dev->ep0state = WAIT_FOR_SETUP;
}
}
}
/*
* handle ep0 interrupt
*/
static void s3c_handle_ep0(struct s3c_udc *dev)
{
struct s3c_ep *ep = &dev->ep[0];
u32 csr;
csr = __raw_readl(S3C_UDC_EP0_STATUS_REG);
DEBUG_EP0("%s: S3C_UDC_EP0_STATUS_REG = 0x%x\n", __FUNCTION__, csr);
/*
* if SENT_STALL is set
* - clear the SENT_STALL bit
*/
if (csr & S3C_UDC_EP0_STALL) {
printk("%s: S3C_UDC_EP0_STALL\n", __FUNCTION__);
__raw_writel(S3C_UDC_EP0_STALL, S3C_UDC_EP0_STATUS_REG); /* clear */
nuke(ep, -ECONNABORTED);
dev->ep0state = WAIT_FOR_SETUP;
return;
}
if (csr & S3C_UDC_EP0_TX_SUCCESS) {
DEBUG_EP0("%s: EP0_TX_SUCCESS \n", __FUNCTION__);
__raw_writel(S3C_UDC_EP0_TX_SUCCESS, S3C_UDC_EP0_STATUS_REG); /* clear */
if(dev->ep0state == DATA_STATE_XMIT) {
DEBUG_EP0("%s: Continue ep0 write... \n", __FUNCTION__);
s3c_ep0_write(dev);
}
}
if (csr & S3C_UDC_EP0_RX_SUCCESS) {
if (dev->ep0state == WAIT_FOR_SETUP) {
DEBUG_EP0("%s: WAIT_FOR_SETUP\n", __FUNCTION__);
s3c_ep0_setup(dev, csr);
} else {
DEBUG_EP0("%s: strange state!!(state = %s)\n",
__FUNCTION__, state_names[dev->ep0state]);
}
}
}
static void s3c_ep0_kick(struct s3c_udc *dev, struct s3c_ep *ep)
{
DEBUG_EP0("%s: ep_is_in = %d\n", __FUNCTION__, ep_is_in(ep));
if (ep_is_in(ep)) {
dev->ep0state = DATA_STATE_XMIT;
s3c_ep0_write(dev);
} else {
dev->ep0state = DATA_STATE_RECV;
s3c_ep0_read(dev);
}
}
/* ---------------------------------------------------------------------------
* device-scoped parts of the api to the usb controller hardware
* ---------------------------------------------------------------------------
*/
static int s3c_udc_get_frame(struct usb_gadget *_gadget)
{
/*fram count number [10:0]*/
u32 frame = __raw_readl(S3C_UDC_FRAME_NUM_REG);
DEBUG("%s: %p\n", __FUNCTION__, _gadget);
return (frame & 0x7ff);
}
static int s3c_udc_wakeup(struct usb_gadget *_gadget)
{
return -ENOTSUPP;
}
static const struct usb_gadget_ops s3c_udc_ops = {
.get_frame = s3c_udc_get_frame,
.wakeup = s3c_udc_wakeup,
/* current versions must always be self-powered */
};
static void nop_release(struct device *dev)
{
DEBUG("%s %s\n", __FUNCTION__, dev->bus_id);
}
static struct s3c_udc memory = {
.usb_address = 0,
.gadget = {
.ops = &s3c_udc_ops,
.ep0 = &memory.ep[0].ep,
.name = driver_name,
.dev = {
.bus_id = "gadget",
.release = nop_release,
},
},
/* control endpoint */
.ep[0] = {
.ep = {
.name = ep0name,
.ops = &s3c_ep_ops,
.maxpacket = EP0_FIFO_SIZE,
},
.dev = &memory,
.bEndpointAddress = 0,
.bmAttributes = 0,
.ep_type = ep_control,
.fifo = (u32) S3C_UDC_EP0_FIFO_REG,
},
/* first group of endpoints */
.ep[1] = {
.ep = {
.name = "ep1-bulk",
.ops = &s3c_ep_ops,
.maxpacket = EP_FIFO_SIZE,
},
.dev = &memory,
.bEndpointAddress = 1,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.ep_type = ep_bulk_out,
.fifo = (u32) S3C_UDC_EP1_FIFO_REG,
},
.ep[2] = {
.ep = {
.name = "ep2-bulk",
.ops = &s3c_ep_ops,
.maxpacket = EP_FIFO_SIZE,
},
.dev = &memory,
.bEndpointAddress = USB_DIR_IN | 2,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.ep_type = ep_bulk_in,
.fifo = (u32) S3C_UDC_EP2_FIFO_REG,
},
.ep[3] = { // Though NOT USED XXX
.ep = {
.name = "ep3-int",
.ops = &s3c_ep_ops,
.maxpacket = EP_FIFO_SIZE,
},
.dev = &memory,
.bEndpointAddress = USB_DIR_IN | 3,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.ep_type = ep_interrupt,
.fifo = (u32) S3C_UDC_EP3_FIFO_REG,
},
.ep[4] = { // Though NOT USED XXX
.ep = {
.name = "ep4-int",
.ops = &s3c_ep_ops,
.maxpacket = EP_FIFO_SIZE,
},
.dev = &memory,
.bEndpointAddress = USB_DIR_IN | 4,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.ep_type = ep_interrupt,
.fifo = (u32) S3C_UDC_EP4_FIFO_REG,
},
.ep[5] = { // Though NOT USED XXX
.ep = {
.name = "ep5-int",
.ops = &s3c_ep_ops,
.maxpacket = EP_FIFO_SIZE2,
},
.dev = &memory,
.bEndpointAddress = USB_DIR_IN | 5,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.ep_type = ep_interrupt,
.fifo = (u32) S3C_UDC_EP5_FIFO_REG,
},
.ep[6] = { // Though NOT USED XXX
.ep = {
.name = "ep6-int",
.ops = &s3c_ep_ops,
.maxpacket = EP_FIFO_SIZE2,
},
.dev = &memory,
.bEndpointAddress = USB_DIR_IN | 6,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.ep_type = ep_interrupt,
.fifo = (u32) S3C_UDC_EP6_FIFO_REG,
},
.ep[7] = { // Though NOT USED XXX
.ep = {
.name = "ep7-int",
.ops = &s3c_ep_ops,
.maxpacket = EP_FIFO_SIZE2,
},
.dev = &memory,
.bEndpointAddress = USB_DIR_IN | 7,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.ep_type = ep_interrupt,
.fifo = (u32) S3C_UDC_EP7_FIFO_REG,
},
.ep[8] = { // Though NOT USED XXX
.ep = {
.name = "ep8-int",
.ops = &s3c_ep_ops,
.maxpacket = EP_FIFO_SIZE2,
},
.dev = &memory,
.bEndpointAddress = USB_DIR_IN | 8,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.ep_type = ep_interrupt,
.fifo = (u32) S3C_UDC_EP8_FIFO_REG,
},
};
//Qisda, Leo SJ Yang,2009/11/04
//{turn off USB_EN20 when charger is unplug
static int s3c_udc_open(struct inode *inode, struct file *file)
{
return 0;
}
static int s3c_udc_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
int retval;
static char s3c_UDC_power_off = 1;
static int USB_UDC_POWER_SAVING = 0;
switch(cmd)
{
case USB_UDC_DEVICE_POWER_STATE:
{
printk("\nUSB_UDC_DEVICE_POWER_STATE: %d\n", arg);
if(arg == 0)
{
s3c2410_gpio_cfgpin(S3C2443_GPH14, S3C2443_GPH14_OUTP);
s3c2410_gpio_setpin(S3C2443_GPH14, 1); /* usb power enbale */
s3c_UDC_power_off = 0;
}
else if(arg == 1||arg == 2||arg == 3)
{
if(!s3c_UDC_power_off)
{
if((readl(S3C2410_GPGDAT) &(1<<1))==0)
{
printk("\nUSB_UDC_DEVICE_POWER_STATE: %d\n", arg);
s3c2410_gpio_cfgpin(S3C2443_GPH14, S3C2443_GPH14_OUTP);
s3c2410_gpio_setpin(S3C2443_GPH14, 0); /* usb power enbale */
}
s3c_UDC_power_off = 1;
}
}
}
break;
default:
printk("no this command\n");
break;
}
return 0;
}
/* File operations struct for character device */
static const struct file_operations s3c_udc_fops = {
.owner = THIS_MODULE,
.ioctl = s3c_udc_ioctl,
.open = s3c_udc_open,
.release = NULL
};
//Qisda, Leo SJ Yang, 2009/11/04, for udc power state}
/*
* probe - binds to the platform device
*/
static struct clk *udc_clock = NULL;
static int s3c_udc_probe(struct platform_device *pdev)
{
struct s3c_udc *dev = &memory;
int retval;
DEBUG("%s: %p\n", __FUNCTION__, pdev);
spin_lock_init(&dev->lock);
dev->dev = pdev;
device_initialize(&dev->gadget.dev);
dev->gadget.dev.parent = &pdev->dev;
dev->gadget.is_dualspeed = 1; // Hack only
dev->gadget.is_otg = 0;
dev->gadget.is_a_peripheral = 0;
dev->gadget.b_hnp_enable = 0;
dev->gadget.a_hnp_support = 0;
dev->gadget.a_alt_hnp_support = 0;
the_controller = dev;
platform_set_drvdata(pdev, dev);
udc_reinit(dev);
udc_clock = clk_get(&pdev->dev, "usb-device");
if (udc_clock == NULL) {
printk(KERN_INFO "failed to find usb-device clock source\n");
return -ENOENT;
}
/*Qisda Leo SJ Yang 2009/11/04 udc power state{*/
/*turn off USB EN20 when charger in unplug*/
if (register_chrdev(S3C_UDC_MAJOR,"s3c_usb_udc",&s3c_udc_fops))
{
printk("unable to get major s3c_usb_udc\n");
}
s3c2410_gpio_cfgpin(S3C2443_GPH14,S3C2443_GPH14_OUTP);
s3c2410_gpio_setpin(S3C2443_GPH14,0);/* usb power enbale */
/*turn off USB_EN20 when charger is unplug*/
/*}Qisda Leo SJ Yang 2009/11/04 udc power state*/
clk_enable(udc_clock);
local_irq_disable();
/* irq setup after old hardware state is cleaned up */
retval =
request_irq(IRQ_USBD, s3c_udc_irq, SA_INTERRUPT, driver_name,
dev);
if (retval != 0) {
DEBUG(KERN_ERR "%s: can't get irq %i, err %d\n", driver_name,
IRQ_USBD, retval);
return -EBUSY;
}
disable_irq(IRQ_USBD);
local_irq_enable();
//create_proc_files();
return retval;
}
static int s3c_udc_remove(struct platform_device *pdev)
{
struct s3c_udc *dev = platform_get_drvdata(pdev);
DEBUG("%s: %p\n", __FUNCTION__, pdev);
remove_proc_files();
usb_gadget_unregister_driver(dev->driver);
free_irq(IRQ_USBD, dev);
platform_set_drvdata(pdev, 0);
the_controller = 0;
return 0;
}
/*-------------------------------------------------------------------------*/
static struct platform_driver s3c_udc_driver = {
.probe = s3c_udc_probe,
.remove = s3c_udc_remove,
.driver = {
.owner = THIS_MODULE,
.name = "s3c2410-usbgadget",
},
};
static int __init udc_init(void)
{
int ret;
ret = platform_driver_register(&s3c_udc_driver);
if(!ret)
printk("Loaded %s version %s\n", driver_name, DRIVER_VERSION);
return ret;
}
static void __exit udc_exit(void)
{
platform_driver_unregister(&s3c_udc_driver);
printk("Unloaded %s version %s\n", driver_name, DRIVER_VERSION);
}
module_init(udc_init);
module_exit(udc_exit);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR("Samsung");
MODULE_LICENSE("GPL");
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