target/linux/s3c24xx/patches-2.6.30/100-udc-poll-vbus.patch

   1 --- a/drivers/usb/gadget/s3c2410_udc.c
   2 +++ b/drivers/usb/gadget/s3c2410_udc.c
   3 @@ -74,6 +74,7 @@ static void __iomem           *base_addr;
   4  static u64                     rsrc_start;
   5  static u64                     rsrc_len;
   6  static struct dentry           *s3c2410_udc_debugfs_root;
   7 +static struct timer_list       vbus_poll_timer;
   8
   9  static inline u32 udc_read(u32 reg)
  10  {
  11 @@ -134,6 +135,8 @@ static int dprintk(int level, const char
  12         return 0;
  13  }
  14  #endif
  15 +
  16 +#ifdef CONFIG_USB_GADGET_DEBUG_FS
  17  static int s3c2410_udc_debugfs_seq_show(struct seq_file *m, void *p)
  18  {
  19         u32 addr_reg,pwr_reg,ep_int_reg,usb_int_reg;
  20 @@ -197,6 +200,7 @@ static const struct file_operations s3c2
  21         .release        = single_release,
  22         .owner          = THIS_MODULE,
  23  };
  24 +#endif
  25
  26  /* io macros */
  27
  28 @@ -843,6 +847,7 @@ static void s3c2410_udc_handle_ep(struct
  29         u32                     ep_csr1;
  30         u32                     idx;
  31
  32 +handle_ep_again:
  33         if (likely (!list_empty(&ep->queue)))
  34                 req = list_entry(ep->queue.next,
  35                                 struct s3c2410_request, queue);
  36 @@ -882,6 +887,8 @@ static void s3c2410_udc_handle_ep(struct
  37
  38                 if ((ep_csr1 & S3C2410_UDC_OCSR1_PKTRDY) && req) {
  39                         s3c2410_udc_read_fifo(ep,req);
  40 +                       if (s3c2410_udc_fifo_count_out())
  41 +                               goto handle_ep_again;
  42                 }
  43         }
  44  }
  45 @@ -1520,6 +1527,20 @@ static irqreturn_t s3c2410_udc_vbus_irq(
  46         return IRQ_HANDLED;
  47  }
  48
  49 +static void s3c2410_udc_vbus_poll(unsigned long _data)
  50 +{
  51 +       struct s3c2410_udc      *data = (struct s3c2410_udc *)_data;
  52 +       int                     v;
  53 +
  54 +       dprintk(DEBUG_NORMAL, "%s()\n", __func__);
  55 +       if (udc_info && udc_info->get_vbus_status) {
  56 +               v = udc_info->get_vbus_status();
  57 +               if ((v > -1) && (v != data->vbus))
  58 +                       s3c2410_udc_vbus_session(&data->gadget, v);
  59 +               mod_timer(&vbus_poll_timer, jiffies + msecs_to_jiffies(900));
  60 +       }
  61 +}
  62 +
  63  static int s3c2410_vbus_draw(struct usb_gadget *_gadget, unsigned ma)
  64  {
  65         dprintk(DEBUG_NORMAL, "%s()\n", __func__);
  66 @@ -1677,6 +1698,11 @@ int usb_gadget_register_driver(struct us
  67                 goto register_error;
  68         }
  69
  70 +       if (udc_info && udc_info->get_vbus_status && !udc_info->vbus_pin) {
  71 +               mod_timer(&vbus_poll_timer, jiffies + msecs_to_jiffies(50));
  72 +               return 0; /* just return, vbus change will enable udc */
  73 +       }
  74 +
  75         /* Enable udc */
  76         s3c2410_udc_enable(udc);
  77
  78 @@ -1707,6 +1733,7 @@ int usb_gadget_unregister_driver(struct
  79         if (driver->disconnect)
  80                 driver->disconnect(&udc->gadget);
  81
  82 +       driver->unbind(&udc->gadget);
  83         device_del(&udc->gadget.dev);
  84         udc->driver = NULL;
  85
  86 @@ -1893,10 +1920,16 @@ static int s3c2410_udc_probe(struct plat
  87                 }
  88
  89                 dev_dbg(dev, "got irq %i\n", irq);
  90 +       } else if (udc_info && udc_info->get_vbus_status) {
  91 +               udc->vbus = 0;
  92 +               init_timer(&vbus_poll_timer);
  93 +               vbus_poll_timer.function = s3c2410_udc_vbus_poll;
  94 +               vbus_poll_timer.data = (unsigned long) udc;
  95         } else {
  96                 udc->vbus = 1;
  97         }
  98
  99 +#ifdef CONFIG_USB_GADGET_DEBUG_FS
 100         if (s3c2410_udc_debugfs_root) {
 101                 udc->regs_info = debugfs_create_file("registers", S_IRUGO,
 102                                 s3c2410_udc_debugfs_root,
 103 @@ -1904,6 +1937,7 @@ static int s3c2410_udc_probe(struct plat
 104                 if (!udc->regs_info)
 105                         dev_warn(dev, "debugfs file creation failed\n");
 106         }
 107 +#endif
 108
 109         dev_dbg(dev, "probe ok\n");
 110
 111 @@ -1939,6 +1973,8 @@ static int s3c2410_udc_remove(struct pla
 112         if (udc_info && udc_info->vbus_pin > 0) {
 113                 irq = gpio_to_irq(udc_info->vbus_pin);
 114                 free_irq(irq, udc);
 115 +       } else if (udc_info && udc_info->get_vbus_status) {
 116 +               del_timer_sync(&vbus_poll_timer);
 117         }
 118
 119         free_irq(IRQ_USBD, udc);
 120 @@ -2013,12 +2049,14 @@ static int __init udc_init(void)
 121
 122         dprintk(DEBUG_NORMAL, "%s: version %s\n", gadget_name, DRIVER_VERSION);
 123
 124 +#ifdef CONFIG_USB_GADGET_DEBUG_FS
 125         s3c2410_udc_debugfs_root = debugfs_create_dir(gadget_name, NULL);
 126         if (IS_ERR(s3c2410_udc_debugfs_root)) {
 127                 printk(KERN_ERR "%s: debugfs dir creation failed %ld\n",
 128                         gadget_name, PTR_ERR(s3c2410_udc_debugfs_root));
 129                 s3c2410_udc_debugfs_root = NULL;
 130         }
 131 +#endif
 132
 133         retval = platform_driver_register(&udc_driver_2410);
 134         if (retval)
 135 --- a/drivers/usb/host/ohci-s3c2410.c
 136 +++ b/drivers/usb/host/ohci-s3c2410.c
 137 @@ -21,6 +21,8 @@
 138
 139  #include <linux/platform_device.h>
 140  #include <linux/clk.h>
 141 +#include <mach/hardware.h>
 142 +#include <mach/regs-gpio.h>
 143  #include <plat/usb-control.h>
 144
 145  #define valid_port(idx) ((idx) == 1 || (idx) == 2)
 146 @@ -306,6 +308,42 @@ static void s3c2410_hcd_oc(struct s3c241
 147         local_irq_restore(flags);
 148  }
 149
 150 +/* switching of USB pads */
 151 +static ssize_t show_usb_mode(struct device *dev, struct device_attribute *attr,
 152 +                            char *buf)
 153 +{
 154 +       if (__raw_readl(S3C24XX_MISCCR) & S3C2410_MISCCR_USBHOST)
 155 +               return sprintf(buf, "host\n");
 156 +
 157 +       return sprintf(buf, "device\n");
 158 +}
 159 +
 160 +static ssize_t set_usb_mode(struct device *dev, struct device_attribute *attr,
 161 +                           const char *buf, size_t count)
 162 +{
 163 +       if (!strncmp(buf, "host", 4)) {
 164 +               printk(KERN_WARNING "s3c2410: changing usb to host\n");
 165 +               s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST,
 166 +                                     S3C2410_MISCCR_USBHOST);
 167 +               /* FIXME:
 168 +                * - call machine-specific disable-pullup function i
 169 +                * - enable +Vbus (if hardware supports it)
 170 +                */
 171 +               s3c2410_gpio_setpin(S3C2410_GPB9, 0);
 172 +       } else if (!strncmp(buf, "device", 6)) {
 173 +               printk(KERN_WARNING "s3c2410: changing usb to device\n");
 174 +               s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST, 0);
 175 +               s3c2410_gpio_setpin(S3C2410_GPB9, 1);
 176 +       } else {
 177 +               printk(KERN_WARNING "s3c2410: unknown mode\n");
 178 +               return -EINVAL;
 179 +       }
 180 +
 181 +       return count;
 182 +}
 183 +
 184 +static DEVICE_ATTR(usb_mode, S_IRUGO | S_IWUSR, show_usb_mode, set_usb_mode);
 185 +
 186  /* may be called without controller electrically present */
 187  /* may be called with controller, bus, and devices active */
 188
 189 @@ -486,15 +524,23 @@ static int ohci_hcd_s3c2410_drv_remove(s
 190         return 0;
 191  }
 192
 193 +static int ohci_hcd_s3c2410_drv_resume(struct platform_device *pdev)
 194 +{
 195 +       struct usb_hcd *hcd = platform_get_drvdata(pdev);
 196 +
 197 +       ohci_finish_controller_resume(hcd);
 198 +       return 0;
 199 +}
 200 +
 201  static struct platform_driver ohci_hcd_s3c2410_driver = {
 202         .probe          = ohci_hcd_s3c2410_drv_probe,
 203         .remove         = ohci_hcd_s3c2410_drv_remove,
 204         .shutdown       = usb_hcd_platform_shutdown,
 205         /*.suspend      = ohci_hcd_s3c2410_drv_suspend, */
 206 -       /*.resume       = ohci_hcd_s3c2410_drv_resume, */
 207 +       .resume         = ohci_hcd_s3c2410_drv_resume,
 208         .driver         = {
 209                 .owner  = THIS_MODULE,
 210 -               .name   = "s3c2410-ohci",
 211 +               .name   = "s3c-ohci",
 212         },
 213  };
 214
 215 --- a/arch/arm/plat-s3c24xx/include/plat/udc.h
 216 +++ b/arch/arm/plat-s3c24xx/include/plat/udc.h
 217 @@ -27,6 +27,7 @@ enum s3c2410_udc_cmd_e {
 218  struct s3c2410_udc_mach_info {
 219         void    (*udc_command)(enum s3c2410_udc_cmd_e);
 220         void    (*vbus_draw)(unsigned int ma);
 221 +       int     (*get_vbus_status)(void);
 222         unsigned int vbus_pin;
 223         unsigned char vbus_pin_inverted;
 224  };