arch/arm/mach-pxa/htcsable/htcsable_udc.c

   1 /*
   2  * htcsable_udc.c:
   3  * htcsable specific code for the pxa27x usb device controller.
   4  *
   5  *
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/init.h>
  10 #include <linux/platform_device.h>
  11 #include <asm/arch/hardware.h>
  12 #include <asm/arch/pxa-regs.h>
  13 #include <asm/arch/udc.h>
  14 #include <linux/soc/asic3_base.h>
  15 #include <asm/arch/htcsable-gpio.h>
  16 #include <asm/arch/htcsable-asic.h>
  17
  18 extern struct platform_device htcsable_asic3;
  19
  20 static void htcsable_udc_command(int cmd)
  21 {
  22         switch (cmd) {
  23         case PXA2XX_UDC_CMD_DISCONNECT:
  24     printk("htcsable udc disconnect\n");
  25                 asic3_set_gpio_out_a(&htcsable_asic3.dev,
  26                                            1<<GPIOA_USB_PUEN,  1<<GPIOA_USB_PUEN);
  27                 break;
  28         case PXA2XX_UDC_CMD_CONNECT:
  29     printk("htcsable udc connect\n");
  30                 asic3_set_gpio_out_a(&htcsable_asic3.dev,
  31                                            1<<GPIOA_USB_PUEN, 0);
  32                 break;
  33         default:
  34                 printk("_udc_control: unknown command!\n");
  35                 break;
  36         }
  37 }
  38
  39 static int htcsable_udc_is_connected(void)
  40 {
  41  int ret = ((asic3_get_gpio_status_b(&htcsable_asic3.dev) & (1<<GPIOB_USB_DETECT)) != 0);
  42  printk("htcsable_udc_is_connected returns %d\n",ret);
  43  return ret;
  44 }
  45
  46 static struct pxa2xx_udc_mach_info htcsable_udc_info __initdata = {
  47         .udc_is_connected = htcsable_udc_is_connected,
  48         .udc_command      = htcsable_udc_command,
  49 };
  50
  51 static int htcsable_udc_probe(struct device * dev)
  52 {
  53         pxa_set_udc_info(&htcsable_udc_info);
  54         return 0;
  55 }
  56
  57 static struct device_driver htcsable_udc_driver = {
  58         .name     = "htcsable_udc",
  59         .bus      = &platform_bus_type,
  60         .probe    = htcsable_udc_probe,
  61 };
  62
  63 static int __init htcsable_udc_init(void)
  64 {
  65  printk("htcsable_udc_init\n");
  66         return driver_register(&htcsable_udc_driver);
  67 }
  68
  69 module_init(htcsable_udc_init);
  70 MODULE_LICENSE("GPL");