/*
* linux/drivers/usb/gadget/pxa2xx_udc.c
- * Intel PXA2xx and IXP4xx on-chip full speed USB device controllers
+ * Intel PXA25x and IXP4xx on-chip full speed USB device controllers
*
* Copyright (C) 2002 Intrinsyc, Inc. (Frank Becker)
* Copyright (C) 2003 Robert Schwebel, Pengutronix
#undef DEBUG
// #define VERBOSE DBG_VERBOSE
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/types.h>
-#include <linux/version.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/proc_fs.h>
#include <linux/mm.h>
-#include <linux/device.h>
+#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
+#include <linux/irq.h>
#include <asm/byteorder.h>
#include <asm/dma.h>
#include <asm/io.h>
-#include <asm/irq.h>
#include <asm/system.h>
#include <asm/mach-types.h>
#include <asm/unaligned.h>
#include <asm/hardware.h>
+#ifdef CONFIG_ARCH_PXA
#include <asm/arch/pxa-regs.h>
+#endif
#include <linux/usb_ch9.h>
#include <linux/usb_gadget.h>
/*
- * This driver handles the USB Device Controller (UDC) in Intel's PXA 2xx
+ * This driver handles the USB Device Controller (UDC) in Intel's PXA 25x
* series processors. The UDC for the IXP 4xx series is very similar.
* There are fifteen endpoints, in addition to ep0.
*
* pxa250 a0/a1 b0/b1/b2 sure act like they're still there.
*/
-#define DRIVER_VERSION "14-Dec-2003"
-#define DRIVER_DESC "PXA 2xx USB Device Controller driver"
+#define DRIVER_VERSION "4-May-2005"
+#define DRIVER_DESC "PXA 25x USB Device Controller driver"
static const char driver_name [] = "pxa2xx_udc";
module_param(use_dma, bool, 0);
MODULE_PARM_DESC (use_dma, "true to use dma");
-static void dma_nodesc_handler (int dmach, void *_ep, struct pt_regs *r);
+static void dma_nodesc_handler (int dmach, void *_ep);
static void kick_dma(struct pxa2xx_ep *ep, struct pxa2xx_request *req);
#ifdef USE_OUT_DMA
static void pxa2xx_ep_fifo_flush (struct usb_ep *ep);
static void nuke (struct pxa2xx_ep *, int status);
+/* one GPIO should be used to detect VBUS from the host */
+static int is_vbus_present(void)
+{
+ struct pxa2xx_udc_mach_info *mach = the_controller->mach;
+
+ if (mach->gpio_vbus)
+ return pxa_gpio_get(mach->gpio_vbus);
+ if (mach->udc_is_connected)
+ return mach->udc_is_connected();
+ return 1;
+}
+
+/* one GPIO should control a D+ pullup, so host sees this device (or not) */
+static void pullup_off(void)
+{
+ struct pxa2xx_udc_mach_info *mach = the_controller->mach;
+
+ if (mach->gpio_pullup)
+ pxa_gpio_set(mach->gpio_pullup, 0);
+ else if (mach->udc_command)
+ mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
+}
+
+static void pullup_on(void)
+{
+ struct pxa2xx_udc_mach_info *mach = the_controller->mach;
+
+ if (mach->gpio_pullup)
+ pxa_gpio_set(mach->gpio_pullup, 1);
+ else if (mach->udc_command)
+ mach->udc_command(PXA2XX_UDC_CMD_CONNECT);
+}
+
static void pio_irq_enable(int bEndpointAddress)
{
bEndpointAddress &= 0xf;
static int pxa2xx_ep_disable (struct usb_ep *_ep)
{
struct pxa2xx_ep *ep;
+ unsigned long flags;
ep = container_of (_ep, struct pxa2xx_ep, ep);
if (!_ep || !ep->desc) {
_ep ? ep->ep.name : NULL);
return -EINVAL;
}
+ local_irq_save(flags);
+
nuke (ep, -ESHUTDOWN);
#ifdef USE_DMA
ep->desc = NULL;
ep->stopped = 1;
+ local_irq_restore(flags);
DBG(DBG_VERBOSE, "%s disabled\n", _ep->name);
return 0;
}
* pxa2xx_ep_alloc_request - allocate a request data structure
*/
static struct usb_request *
-pxa2xx_ep_alloc_request (struct usb_ep *_ep, int gfp_flags)
+pxa2xx_ep_alloc_request (struct usb_ep *_ep, gfp_t gfp_flags)
{
struct pxa2xx_request *req;
- req = kmalloc (sizeof *req, gfp_flags);
+ req = kzalloc(sizeof(*req), gfp_flags);
if (!req)
return NULL;
- memset (req, 0, sizeof *req);
INIT_LIST_HEAD (&req->queue);
return &req->req;
}
*/
static void *
pxa2xx_ep_alloc_buffer(struct usb_ep *_ep, unsigned bytes,
- dma_addr_t *dma, int gfp_flags)
+ dma_addr_t *dma, gfp_t gfp_flags)
{
char *retval;
count = req->req.length;
done (ep, req, 0);
ep0_idle(ep->dev);
+#ifndef CONFIG_ARCH_IXP4XX
#if 1
/* This seems to get rid of lost status irqs in some cases:
* host responds quickly, or next request involves config
udelay(1);
} while (count);
}
+#endif
#endif
} else if (ep->dev->req_pending)
ep0start(ep->dev, 0, "IN");
}
/* dma channel stopped ... normal tx end (IN), or on error (IN/OUT) */
-static void dma_nodesc_handler(int dmach, void *_ep, struct pt_regs *r)
+static void dma_nodesc_handler(int dmach, void *_ep)
{
struct pxa2xx_ep *ep = _ep;
struct pxa2xx_request *req;
/*-------------------------------------------------------------------------*/
static int
-pxa2xx_ep_queue(struct usb_ep *_ep, struct usb_request *_req, int gfp_flags)
+pxa2xx_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
{
struct pxa2xx_request *req;
struct pxa2xx_ep *ep;
kick_dma(ep, req);
#endif
/* can the FIFO can satisfy the request immediately? */
- } else if ((ep->bEndpointAddress & USB_DIR_IN) != 0
- && (*ep->reg_udccs & UDCCS_BI_TFS) != 0
- && write_fifo(ep, req)) {
- req = NULL;
+ } else if ((ep->bEndpointAddress & USB_DIR_IN) != 0) {
+ if ((*ep->reg_udccs & UDCCS_BI_TFS) != 0
+ && write_fifo(ep, req))
+ req = NULL;
} else if ((*ep->reg_udccs & UDCCS_BO_RFS) != 0
&& read_fifo(ep, req)) {
req = NULL;
"%s version: %s\nGadget driver: %s\nHost %s\n\n",
driver_name, DRIVER_VERSION SIZE_STR DMASTR,
dev->driver ? dev->driver->driver.name : "(none)",
- is_usb_connected() ? "full speed" : "disconnected");
+ is_vbus_present() ? "full speed" : "disconnected");
size -= t;
next += t;
next += t;
}
- if (!is_usb_connected() || !dev->driver)
+ if (!is_vbus_present() || !dev->driver)
goto done;
t = scnprintf(next, size, "ep0 IN %lu/%lu, OUT %lu/%lu\nirqs %lu\n\n",
/* "function" sysfs attribute */
static ssize_t
-show_function (struct device *_dev, char *buf)
+show_function (struct device *_dev, struct device_attribute *attr, char *buf)
{
struct pxa2xx_udc *dev = dev_get_drvdata (_dev);
UFNRH = UFNRH_SIM;
/* if hardware supports it, disconnect from usb */
- make_usb_disappear();
+ pullup_off();
udc_clear_mask_UDCCR(UDCCR_UDE);
UICR0 &= ~UICR0_IM0;
/* if hardware supports it, pullup D+ and wait for reset */
- let_usb_appear();
+ pullup_on();
}
int retval;
if (!driver
- || driver->speed != USB_SPEED_FULL
+ || driver->speed < USB_SPEED_FULL
|| !driver->bind
- || !driver->unbind
|| !driver->disconnect
|| !driver->setup)
return -EINVAL;
if (!dev)
return -ENODEV;
- if (!driver || driver != dev->driver)
+ if (!driver || driver != dev->driver || !driver->unbind)
return -EINVAL;
local_irq_disable();
*/
static irqreturn_t
-lubbock_vbus_irq(int irq, void *_dev, struct pt_regs *r)
+lubbock_vbus_irq(int irq, void *_dev)
{
struct pxa2xx_udc *dev = _dev;
int vbus;
#endif
+static irqreturn_t udc_vbus_irq(int irq, void *_dev)
+{
+ struct pxa2xx_udc *dev = _dev;
+ int vbus = pxa_gpio_get(dev->mach->gpio_vbus);
+
+ pxa2xx_udc_vbus_session(&dev->gadget, vbus);
+ return IRQ_HANDLED;
+}
+
/*-------------------------------------------------------------------------*/
* could cause usb protocol errors.
*/
static irqreturn_t
-pxa2xx_udc_irq(int irq, void *_dev, struct pt_regs *r)
+pxa2xx_udc_irq(int irq, void *_dev)
{
struct pxa2xx_udc *dev = _dev;
int handled;
if (unlikely(udccr & UDCCR_SUSIR)) {
udc_ack_int_UDCCR(UDCCR_SUSIR);
handled = 1;
- DBG(DBG_VERBOSE, "USB suspend%s\n", is_usb_connected()
+ DBG(DBG_VERBOSE, "USB suspend%s\n", is_vbus_present()
? "" : "+disconnect");
- if (!is_usb_connected())
+ if (!is_vbus_present())
stop_activity(dev, dev->driver);
else if (dev->gadget.speed != USB_SPEED_UNKNOWN
&& dev->driver
if (dev->gadget.speed != USB_SPEED_UNKNOWN
&& dev->driver
&& dev->driver->resume
- && is_usb_connected())
+ && is_vbus_present())
dev->driver->resume(&dev->gadget);
}
#define PXA210_B1 0x00000123
#define PXA210_B0 0x00000122
#define IXP425_A0 0x000001c1
+#define IXP425_B0 0x000001f1
+#define IXP465_AD 0x00000200
/*
* probe - binds to the platform device
*/
-static int __init pxa2xx_udc_probe(struct device *_dev)
+static int __init pxa2xx_udc_probe(struct platform_device *pdev)
{
struct pxa2xx_udc *dev = &memory;
- int retval, out_dma = 1;
+ int retval, out_dma = 1, vbus_irq;
u32 chiprev;
/* insist on Intel/ARM/XScale */
break;
#elif defined(CONFIG_ARCH_IXP4XX)
case IXP425_A0:
+ case IXP425_B0:
+ case IXP465_AD:
+ dev->has_cfr = 1;
out_dma = 0;
break;
#endif
#endif
/* other non-static parts of init */
- dev->dev = _dev;
- dev->mach = _dev->platform_data;
+ dev->dev = &pdev->dev;
+ dev->mach = pdev->dev.platform_data;
+ if (dev->mach->gpio_vbus) {
+ vbus_irq = IRQ_GPIO(dev->mach->gpio_vbus & GPIO_MD_MASK_NR);
+ pxa_gpio_mode((dev->mach->gpio_vbus & GPIO_MD_MASK_NR)
+ | GPIO_IN);
+ set_irq_type(vbus_irq, IRQT_BOTHEDGE);
+ } else
+ vbus_irq = 0;
+ if (dev->mach->gpio_pullup)
+ pxa_gpio_mode((dev->mach->gpio_pullup & GPIO_MD_MASK_NR)
+ | GPIO_OUT | GPIO_DFLT_LOW);
init_timer(&dev->timer);
dev->timer.function = udc_watchdog;
dev->timer.data = (unsigned long) dev;
device_initialize(&dev->gadget.dev);
- dev->gadget.dev.parent = _dev;
- dev->gadget.dev.dma_mask = _dev->dma_mask;
+ dev->gadget.dev.parent = &pdev->dev;
+ dev->gadget.dev.dma_mask = pdev->dev.dma_mask;
the_controller = dev;
- dev_set_drvdata(_dev, dev);
+ platform_set_drvdata(pdev, dev);
udc_disable(dev);
udc_reinit(dev);
- dev->vbus = is_usb_connected();
+ dev->vbus = is_vbus_present();
/* irq setup after old hardware state is cleaned up */
retval = request_irq(IRQ_USB, pxa2xx_udc_irq,
- SA_INTERRUPT, driver_name, dev);
+ IRQF_DISABLED, driver_name, dev);
if (retval != 0) {
printk(KERN_ERR "%s: can't get irq %i, err %d\n",
driver_name, IRQ_USB, retval);
if (machine_is_lubbock()) {
retval = request_irq(LUBBOCK_USB_DISC_IRQ,
lubbock_vbus_irq,
- SA_INTERRUPT | SA_SAMPLE_RANDOM,
+ IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
driver_name, dev);
if (retval != 0) {
printk(KERN_ERR "%s: can't get irq %i, err %d\n",
}
retval = request_irq(LUBBOCK_USB_IRQ,
lubbock_vbus_irq,
- SA_INTERRUPT | SA_SAMPLE_RANDOM,
+ IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
driver_name, dev);
if (retval != 0) {
printk(KERN_ERR "%s: can't get irq %i, err %d\n",
HEX_DISPLAY(dev->stats.irqs);
LUB_DISC_BLNK_LED &= 0xff;
#endif
- }
+ } else
#endif
+ if (vbus_irq) {
+ retval = request_irq(vbus_irq, udc_vbus_irq,
+ SA_INTERRUPT | SA_SAMPLE_RANDOM,
+ driver_name, dev);
+ if (retval != 0) {
+ printk(KERN_ERR "%s: can't get irq %i, err %d\n",
+ driver_name, vbus_irq, retval);
+ free_irq(IRQ_USB, dev);
+ return -EBUSY;
+ }
+ }
create_proc_files();
return 0;
}
-static int __exit pxa2xx_udc_remove(struct device *_dev)
+
+static void pxa2xx_udc_shutdown(struct platform_device *_dev)
{
- struct pxa2xx_udc *dev = dev_get_drvdata(_dev);
+ pullup_off();
+}
+
+static int __exit pxa2xx_udc_remove(struct platform_device *pdev)
+{
+ struct pxa2xx_udc *dev = platform_get_drvdata(pdev);
+
+ if (dev->driver)
+ return -EBUSY;
udc_disable(dev);
remove_proc_files();
- usb_gadget_unregister_driver(dev->driver);
if (dev->got_irq) {
free_irq(IRQ_USB, dev);
dev->got_irq = 0;
}
+#ifdef CONFIG_ARCH_LUBBOCK
if (machine_is_lubbock()) {
free_irq(LUBBOCK_USB_DISC_IRQ, dev);
free_irq(LUBBOCK_USB_IRQ, dev);
}
- dev_set_drvdata(_dev, NULL);
+#endif
+ if (dev->mach->gpio_vbus)
+ free_irq(IRQ_GPIO(dev->mach->gpio_vbus), dev);
+ platform_set_drvdata(pdev, NULL);
the_controller = NULL;
return 0;
}
* VBUS IRQs should probably be ignored so that the PXA device just acts
* "dead" to USB hosts until system resume.
*/
-static int pxa2xx_udc_suspend(struct device *dev, u32 state, u32 level)
+static int pxa2xx_udc_suspend(struct platform_device *dev, pm_message_t state)
{
- struct pxa2xx_udc *udc = dev_get_drvdata(dev);
+ struct pxa2xx_udc *udc = platform_get_drvdata(dev);
+
+ if (!udc->mach->udc_command)
+ WARN("USB host won't detect disconnect!\n");
+ pullup(udc, 0);
- if (level == SUSPEND_POWER_DOWN) {
- if (!udc->mach->udc_command)
- WARN("USB host won't detect disconnect!\n");
- pullup(udc, 0);
- }
return 0;
}
-static int pxa2xx_udc_resume(struct device *dev, u32 level)
+static int pxa2xx_udc_resume(struct platform_device *dev)
{
- struct pxa2xx_udc *udc = dev_get_drvdata(dev);
+ struct pxa2xx_udc *udc = platform_get_drvdata(dev);
+
+ pullup(udc, 1);
- if (level == RESUME_POWER_ON)
- pullup(udc, 1);
return 0;
}
/*-------------------------------------------------------------------------*/
-static struct device_driver udc_driver = {
- .name = "pxa2xx-udc",
- .bus = &platform_bus_type,
+static struct platform_driver udc_driver = {
.probe = pxa2xx_udc_probe,
+ .shutdown = pxa2xx_udc_shutdown,
.remove = __exit_p(pxa2xx_udc_remove),
.suspend = pxa2xx_udc_suspend,
.resume = pxa2xx_udc_resume,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "pxa2xx-udc",
+ },
};
static int __init udc_init(void)
{
printk(KERN_INFO "%s: version %s\n", driver_name, DRIVER_VERSION);
- return driver_register(&udc_driver);
+ return platform_driver_register(&udc_driver);
}
module_init(udc_init);
static void __exit udc_exit(void)
{
- driver_unregister(&udc_driver);
+ platform_driver_unregister(&udc_driver);
}
module_exit(udc_exit);