arch/arm/mach-pxa/h4000/h4000_udc.c

   1 /*
   2  * h4000_udc.c:
   3  * h4000 specific code for the pxa255 usb device controller.
   4  *
   5  * */
   6
   7 #include <linux/module.h>
   8 #include <linux/init.h>
   9 #include <linux/platform_device.h>
  10 #include <asm/arch/hardware.h>
  11 #include <asm/arch/pxa-regs.h>
  12 #include <asm/arch/udc.h>
  13 #include <linux/soc/asic3_base.h>
  14 #include <asm/arch/h4000-gpio.h>
  15 #include <asm/arch/h4000-asic.h>
  16
  17 extern struct platform_device h4000_asic3;
  18
  19 static void h4000_udc_command(int cmd)
  20 {
  21         switch (cmd) {
  22         case PXA2XX_UDC_CMD_DISCONNECT:
  23                 asic3_set_gpio_out_d(&h4000_asic3.dev,
  24                                           GPIOD_USB_PULLUP, 0);
  25                 break;
  26         case PXA2XX_UDC_CMD_CONNECT:
  27                 asic3_set_gpio_out_d(&h4000_asic3.dev,
  28                                           GPIOD_USB_PULLUP, GPIOD_USB_PULLUP);
  29                 break;
  30         default:
  31                 printk("_udc_control: unknown command!\n");
  32                 break;
  33         }
  34 }
  35
  36 static int h4000_udc_is_connected(void)
  37 {
  38         return (!(GET_H4000_GPIO(USB_DETECT_N)));
  39 }
  40
  41 static struct pxa2xx_udc_mach_info h4000_udc_info __initdata = {
  42         .udc_is_connected = h4000_udc_is_connected,
  43         .udc_command      = h4000_udc_command,
  44 };
  45
  46 static int h4000_udc_probe(struct platform_device * dev)
  47 {
  48         pxa_set_udc_info(&h4000_udc_info);
  49         return 0;
  50 }
  51
  52 static struct platform_driver h4000_udc_driver = {
  53         .driver   = {
  54                 .name     = "h4000_udc",
  55         },
  56         .probe    = h4000_udc_probe,
  57 };
  58
  59 static int __init h4000_udc_init(void)
  60 {
  61         return platform_driver_register(&h4000_udc_driver);
  62 }
  63
  64 module_init(h4000_udc_init);
  65 MODULE_LICENSE("GPL");
  66