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225 lines
6.4 KiB
Diff
225 lines
6.4 KiB
Diff
--- a/drivers/usb/gadget/s3c2410_udc.c
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+++ b/drivers/usb/gadget/s3c2410_udc.c
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@@ -74,6 +74,7 @@ static void __iomem *base_addr;
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static u64 rsrc_start;
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static u64 rsrc_len;
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static struct dentry *s3c2410_udc_debugfs_root;
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+static struct timer_list vbus_poll_timer;
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static inline u32 udc_read(u32 reg)
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{
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@@ -134,6 +135,8 @@ static int dprintk(int level, const char
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return 0;
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}
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#endif
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+
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+#ifdef CONFIG_USB_GADGET_DEBUG_FS
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static int s3c2410_udc_debugfs_seq_show(struct seq_file *m, void *p)
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{
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u32 addr_reg,pwr_reg,ep_int_reg,usb_int_reg;
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@@ -197,6 +200,7 @@ static const struct file_operations s3c2
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.release = single_release,
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.owner = THIS_MODULE,
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};
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+#endif
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/* io macros */
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@@ -843,6 +847,7 @@ static void s3c2410_udc_handle_ep(struct
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u32 ep_csr1;
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u32 idx;
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+handle_ep_again:
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if (likely (!list_empty(&ep->queue)))
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req = list_entry(ep->queue.next,
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struct s3c2410_request, queue);
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@@ -882,6 +887,8 @@ static void s3c2410_udc_handle_ep(struct
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if ((ep_csr1 & S3C2410_UDC_OCSR1_PKTRDY) && req) {
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s3c2410_udc_read_fifo(ep,req);
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+ if (s3c2410_udc_fifo_count_out())
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+ goto handle_ep_again;
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}
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}
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}
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@@ -1520,6 +1527,20 @@ static irqreturn_t s3c2410_udc_vbus_irq(
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return IRQ_HANDLED;
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}
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+static void s3c2410_udc_vbus_poll(unsigned long _data)
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+{
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+ struct s3c2410_udc *data = (struct s3c2410_udc *)_data;
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+ int v;
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+
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+ dprintk(DEBUG_NORMAL, "%s()\n", __func__);
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+ if (udc_info && udc_info->get_vbus_status) {
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+ v = udc_info->get_vbus_status();
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+ if ((v > -1) && (v != data->vbus))
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+ s3c2410_udc_vbus_session(&data->gadget, v);
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+ mod_timer(&vbus_poll_timer, jiffies + msecs_to_jiffies(900));
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+ }
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+}
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+
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static int s3c2410_vbus_draw(struct usb_gadget *_gadget, unsigned ma)
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{
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dprintk(DEBUG_NORMAL, "%s()\n", __func__);
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@@ -1677,6 +1698,11 @@ int usb_gadget_register_driver(struct us
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goto register_error;
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}
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+ if (udc_info && udc_info->get_vbus_status && !udc_info->vbus_pin) {
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+ mod_timer(&vbus_poll_timer, jiffies + msecs_to_jiffies(50));
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+ return 0; /* just return, vbus change will enable udc */
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+ }
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+
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/* Enable udc */
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s3c2410_udc_enable(udc);
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@@ -1707,6 +1733,7 @@ int usb_gadget_unregister_driver(struct
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if (driver->disconnect)
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driver->disconnect(&udc->gadget);
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+ driver->unbind(&udc->gadget);
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device_del(&udc->gadget.dev);
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udc->driver = NULL;
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@@ -1893,10 +1920,16 @@ static int s3c2410_udc_probe(struct plat
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}
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dev_dbg(dev, "got irq %i\n", irq);
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+ } else if (udc_info && udc_info->get_vbus_status) {
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+ udc->vbus = 0;
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+ init_timer(&vbus_poll_timer);
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+ vbus_poll_timer.function = s3c2410_udc_vbus_poll;
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+ vbus_poll_timer.data = (unsigned long) udc;
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} else {
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udc->vbus = 1;
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}
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+#ifdef CONFIG_USB_GADGET_DEBUG_FS
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if (s3c2410_udc_debugfs_root) {
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udc->regs_info = debugfs_create_file("registers", S_IRUGO,
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s3c2410_udc_debugfs_root,
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@@ -1904,6 +1937,7 @@ static int s3c2410_udc_probe(struct plat
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if (!udc->regs_info)
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dev_warn(dev, "debugfs file creation failed\n");
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}
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+#endif
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dev_dbg(dev, "probe ok\n");
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@@ -1939,6 +1973,8 @@ static int s3c2410_udc_remove(struct pla
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if (udc_info && udc_info->vbus_pin > 0) {
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irq = gpio_to_irq(udc_info->vbus_pin);
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free_irq(irq, udc);
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+ } else if (udc_info && udc_info->get_vbus_status) {
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+ del_timer_sync(&vbus_poll_timer);
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}
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free_irq(IRQ_USBD, udc);
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@@ -2013,12 +2049,14 @@ static int __init udc_init(void)
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dprintk(DEBUG_NORMAL, "%s: version %s\n", gadget_name, DRIVER_VERSION);
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+#ifdef CONFIG_USB_GADGET_DEBUG_FS
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s3c2410_udc_debugfs_root = debugfs_create_dir(gadget_name, NULL);
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if (IS_ERR(s3c2410_udc_debugfs_root)) {
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printk(KERN_ERR "%s: debugfs dir creation failed %ld\n",
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gadget_name, PTR_ERR(s3c2410_udc_debugfs_root));
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s3c2410_udc_debugfs_root = NULL;
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}
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+#endif
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retval = platform_driver_register(&udc_driver_2410);
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if (retval)
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--- a/drivers/usb/host/ohci-s3c2410.c
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+++ b/drivers/usb/host/ohci-s3c2410.c
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@@ -21,6 +21,8 @@
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#include <linux/platform_device.h>
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#include <linux/clk.h>
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+#include <mach/hardware.h>
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+#include <mach/regs-gpio.h>
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#include <plat/usb-control.h>
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#define valid_port(idx) ((idx) == 1 || (idx) == 2)
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@@ -306,6 +308,42 @@ static void s3c2410_hcd_oc(struct s3c241
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local_irq_restore(flags);
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}
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+/* switching of USB pads */
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+static ssize_t show_usb_mode(struct device *dev, struct device_attribute *attr,
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+ char *buf)
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+{
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+ if (__raw_readl(S3C24XX_MISCCR) & S3C2410_MISCCR_USBHOST)
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+ return sprintf(buf, "host\n");
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+
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+ return sprintf(buf, "device\n");
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+}
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+
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+static ssize_t set_usb_mode(struct device *dev, struct device_attribute *attr,
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+ const char *buf, size_t count)
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+{
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+ if (!strncmp(buf, "host", 4)) {
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+ printk(KERN_WARNING "s3c2410: changing usb to host\n");
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+ s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST,
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+ S3C2410_MISCCR_USBHOST);
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+ /* FIXME:
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+ * - call machine-specific disable-pullup function i
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+ * - enable +Vbus (if hardware supports it)
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+ */
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+ s3c2410_gpio_setpin(S3C2410_GPB9, 0);
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+ } else if (!strncmp(buf, "device", 6)) {
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+ printk(KERN_WARNING "s3c2410: changing usb to device\n");
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+ s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST, 0);
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+ s3c2410_gpio_setpin(S3C2410_GPB9, 1);
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+ } else {
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+ printk(KERN_WARNING "s3c2410: unknown mode\n");
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+ return -EINVAL;
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+ }
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+
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+ return count;
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+}
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+
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+static DEVICE_ATTR(usb_mode, S_IRUGO | S_IWUSR, show_usb_mode, set_usb_mode);
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+
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/* may be called without controller electrically present */
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/* may be called with controller, bus, and devices active */
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@@ -486,15 +524,23 @@ static int ohci_hcd_s3c2410_drv_remove(s
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return 0;
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}
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+static int ohci_hcd_s3c2410_drv_resume(struct platform_device *pdev)
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+{
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+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
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+
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+ ohci_finish_controller_resume(hcd);
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+ return 0;
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+}
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+
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static struct platform_driver ohci_hcd_s3c2410_driver = {
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.probe = ohci_hcd_s3c2410_drv_probe,
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.remove = ohci_hcd_s3c2410_drv_remove,
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.shutdown = usb_hcd_platform_shutdown,
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/*.suspend = ohci_hcd_s3c2410_drv_suspend, */
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- /*.resume = ohci_hcd_s3c2410_drv_resume, */
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+ .resume = ohci_hcd_s3c2410_drv_resume,
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.driver = {
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.owner = THIS_MODULE,
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- .name = "s3c2410-ohci",
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+ .name = "s3c-ohci",
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},
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};
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--- a/arch/arm/plat-s3c24xx/include/plat/udc.h
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+++ b/arch/arm/plat-s3c24xx/include/plat/udc.h
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@@ -27,6 +27,7 @@ enum s3c2410_udc_cmd_e {
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struct s3c2410_udc_mach_info {
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void (*udc_command)(enum s3c2410_udc_cmd_e);
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void (*vbus_draw)(unsigned int ma);
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+ int (*get_vbus_status)(void);
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unsigned int vbus_pin;
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unsigned char vbus_pin_inverted;
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};
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