1 files changed, 230 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.30/100-udc-poll-vbus.patch b/target/linux/s3c24xx/patches-2.6.30/100-udc-poll-vbus.patch
new file mode 100644
index 0000000..5fe1c2e
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.30/100-udc-poll-vbus.patch
@@ -0,0 +1,230 @@
+Index: linux-2.6.30-rc6/drivers/usb/gadget/s3c2410_udc.c
+===================================================================
+--- linux-2.6.30-rc6.orig/drivers/usb/gadget/s3c2410_udc.c	2009-05-16 06:12:57.000000000 +0200
++++ linux-2.6.30-rc6/drivers/usb/gadget/s3c2410_udc.c	2009-05-18 19:08:35.000000000 +0200
+@@ -74,6 +74,7 @@
+ static u64			rsrc_start;
+ static u64			rsrc_len;
+ static struct dentry		*s3c2410_udc_debugfs_root;
++static struct timer_list	vbus_poll_timer;
+ 
+ static inline u32 udc_read(u32 reg)
+ {
+@@ -134,6 +135,8 @@
+ 	return 0;
+ }
+ #endif
++
++#ifdef CONFIG_USB_GADGET_DEBUG_FS
+ static int s3c2410_udc_debugfs_seq_show(struct seq_file *m, void *p)
+ {
+ 	u32 addr_reg,pwr_reg,ep_int_reg,usb_int_reg;
+@@ -197,6 +200,7 @@
+ 	.release	= single_release,
+ 	.owner		= THIS_MODULE,
+ };
++#endif
+ 
+ /* io macros */
+ 
+@@ -843,6 +847,7 @@
+ 	u32			ep_csr1;
+ 	u32			idx;
+ 
++handle_ep_again:
+ 	if (likely (!list_empty(&ep->queue)))
+ 		req = list_entry(ep->queue.next,
+ 				struct s3c2410_request, queue);
+@@ -882,6 +887,8 @@
+ 
+ 		if ((ep_csr1 & S3C2410_UDC_OCSR1_PKTRDY) && req) {
+ 			s3c2410_udc_read_fifo(ep,req);
++			if (s3c2410_udc_fifo_count_out())
++				goto handle_ep_again;
+ 		}
+ 	}
+ }
+@@ -1520,6 +1527,20 @@
+ 	return IRQ_HANDLED;
+ }
+ 
++static void s3c2410_udc_vbus_poll(unsigned long _data)
++{
++	struct s3c2410_udc	*data = (struct s3c2410_udc *)_data;
++	int			v;
++
++	dprintk(DEBUG_NORMAL, "%s()\n", __func__);
++	if (udc_info && udc_info->get_vbus_status) {
++		v = udc_info->get_vbus_status();
++		if ((v > -1) && (v != data->vbus))
++			s3c2410_udc_vbus_session(&data->gadget, v);
++		mod_timer(&vbus_poll_timer, jiffies + msecs_to_jiffies(900));
++	}
++}
++
+ static int s3c2410_vbus_draw(struct usb_gadget *_gadget, unsigned ma)
+ {
+ 	dprintk(DEBUG_NORMAL, "%s()\n", __func__);
+@@ -1677,6 +1698,11 @@
+ 		goto register_error;
+ 	}
+ 
++	if (udc_info && udc_info->get_vbus_status && !udc_info->vbus_pin) {
++		mod_timer(&vbus_poll_timer, jiffies + msecs_to_jiffies(50));
++		return 0; /* just return, vbus change will enable udc */
++	}
++
+ 	/* Enable udc */
+ 	s3c2410_udc_enable(udc);
+ 
+@@ -1707,6 +1733,7 @@
+ 	if (driver->disconnect)
+ 		driver->disconnect(&udc->gadget);
+ 
++	driver->unbind(&udc->gadget);
+ 	device_del(&udc->gadget.dev);
+ 	udc->driver = NULL;
+ 
+@@ -1893,10 +1920,16 @@
+ 		}
+ 
+ 		dev_dbg(dev, "got irq %i\n", irq);
++	} else if (udc_info && udc_info->get_vbus_status) {
++		udc->vbus = 0;
++		init_timer(&vbus_poll_timer);
++		vbus_poll_timer.function = s3c2410_udc_vbus_poll;
++		vbus_poll_timer.data = (unsigned long) udc;
+ 	} else {
+ 		udc->vbus = 1;
+ 	}
+ 
++#ifdef CONFIG_USB_GADGET_DEBUG_FS
+ 	if (s3c2410_udc_debugfs_root) {
+ 		udc->regs_info = debugfs_create_file("registers", S_IRUGO,
+ 				s3c2410_udc_debugfs_root,
+@@ -1904,6 +1937,7 @@
+ 		if (!udc->regs_info)
+ 			dev_warn(dev, "debugfs file creation failed\n");
+ 	}
++#endif
+ 
+ 	dev_dbg(dev, "probe ok\n");
+ 
+@@ -1939,6 +1973,8 @@
+ 	if (udc_info && udc_info->vbus_pin > 0) {
+ 		irq = gpio_to_irq(udc_info->vbus_pin);
+ 		free_irq(irq, udc);
++	} else if (udc_info && udc_info->get_vbus_status) {
++		del_timer_sync(&vbus_poll_timer);
+ 	}
+ 
+ 	free_irq(IRQ_USBD, udc);
+@@ -2013,12 +2049,14 @@
+ 
+ 	dprintk(DEBUG_NORMAL, "%s: version %s\n", gadget_name, DRIVER_VERSION);
+ 
++#ifdef CONFIG_USB_GADGET_DEBUG_FS
+ 	s3c2410_udc_debugfs_root = debugfs_create_dir(gadget_name, NULL);
+ 	if (IS_ERR(s3c2410_udc_debugfs_root)) {
+ 		printk(KERN_ERR "%s: debugfs dir creation failed %ld\n",
+ 			gadget_name, PTR_ERR(s3c2410_udc_debugfs_root));
+ 		s3c2410_udc_debugfs_root = NULL;
+ 	}
++#endif
+ 
+ 	retval = platform_driver_register(&udc_driver_2410);
+ 	if (retval)
+Index: linux-2.6.30-rc6/drivers/usb/host/ohci-s3c2410.c
+===================================================================
+--- linux-2.6.30-rc6.orig/drivers/usb/host/ohci-s3c2410.c	2009-05-16 06:12:57.000000000 +0200
++++ linux-2.6.30-rc6/drivers/usb/host/ohci-s3c2410.c	2009-05-18 19:08:35.000000000 +0200
+@@ -21,6 +21,8 @@
+ 
+ #include <linux/platform_device.h>
+ #include <linux/clk.h>
++#include <mach/hardware.h>
++#include <mach/regs-gpio.h>
+ #include <plat/usb-control.h>
+ 
+ #define valid_port(idx) ((idx) == 1 || (idx) == 2)
+@@ -306,6 +308,42 @@
+ 	local_irq_restore(flags);
+ }
+ 
++/* switching of USB pads */
++static ssize_t show_usb_mode(struct device *dev, struct device_attribute *attr,
++			     char *buf)
++{
++	if (__raw_readl(S3C24XX_MISCCR) & S3C2410_MISCCR_USBHOST)
++		return sprintf(buf, "host\n");
++
++	return sprintf(buf, "device\n");
++}
++
++static ssize_t set_usb_mode(struct device *dev, struct device_attribute *attr,
++			    const char *buf, size_t count)
++{
++	if (!strncmp(buf, "host", 4)) {
++		printk(KERN_WARNING "s3c2410: changing usb to host\n");
++		s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST,
++				      S3C2410_MISCCR_USBHOST);
++		/* FIXME:
++		 * - call machine-specific disable-pullup function i
++		 * - enable +Vbus (if hardware supports it)
++		 */
++		s3c2410_gpio_setpin(S3C2410_GPB9, 0);
++	} else if (!strncmp(buf, "device", 6)) {
++		printk(KERN_WARNING "s3c2410: changing usb to device\n");
++		s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST, 0);
++		s3c2410_gpio_setpin(S3C2410_GPB9, 1);
++	} else {
++		printk(KERN_WARNING "s3c2410: unknown mode\n");
++		return -EINVAL;
++	}
++
++	return count;
++}
++
++static DEVICE_ATTR(usb_mode, S_IRUGO | S_IWUSR, show_usb_mode, set_usb_mode);
++
+ /* may be called without controller electrically present */
+ /* may be called with controller, bus, and devices active */
+ 
+@@ -486,15 +524,23 @@
+ 	return 0;
+ }
+ 
++static int ohci_hcd_s3c2410_drv_resume(struct platform_device *pdev)
++{
++	struct usb_hcd *hcd = platform_get_drvdata(pdev);
++
++	ohci_finish_controller_resume(hcd);
++	return 0;
++}
++
+ static struct platform_driver ohci_hcd_s3c2410_driver = {
+ 	.probe		= ohci_hcd_s3c2410_drv_probe,
+ 	.remove		= ohci_hcd_s3c2410_drv_remove,
+ 	.shutdown	= usb_hcd_platform_shutdown,
+ 	/*.suspend	= ohci_hcd_s3c2410_drv_suspend, */
+-	/*.resume	= ohci_hcd_s3c2410_drv_resume, */
++	.resume		= ohci_hcd_s3c2410_drv_resume,
+ 	.driver		= {
+ 		.owner	= THIS_MODULE,
+-		.name	= "s3c2410-ohci",
++		.name	= "s3c-ohci",
+ 	},
+ };
+ 
+Index: linux-2.6.30-rc6/arch/arm/plat-s3c24xx/include/plat/udc.h
+===================================================================
+--- linux-2.6.30-rc6.orig/arch/arm/plat-s3c24xx/include/plat/udc.h	2009-05-16 06:12:57.000000000 +0200
++++ linux-2.6.30-rc6/arch/arm/plat-s3c24xx/include/plat/udc.h	2009-05-18 19:08:35.000000000 +0200
+@@ -27,6 +27,7 @@
+ struct s3c2410_udc_mach_info {
+ 	void	(*udc_command)(enum s3c2410_udc_cmd_e);
+  	void	(*vbus_draw)(unsigned int ma);
++	int	(*get_vbus_status)(void);
+ 	unsigned int vbus_pin;
+ 	unsigned char vbus_pin_inverted;
+ };