arch/arm/mach-pxa/eseries/eseries_udc.c

   1 /*
   2  * UDC functions for the Toshiba e-series PDAs
   3  *
   4  * Copyright (c) Ian Molton 2003
   5  *
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include <linux/init.h>
  10 #include <asm/mach/arch.h>
  11 #include <asm/mach-types.h>
  12 #include <asm/arch/hardware.h>
  13 #include <asm/mach/map.h>
  14 #include <asm/domain.h>
  15 #include <asm/arch/pxa-regs.h>
  16 #include <asm/arch/eseries-gpio.h>
  17 #include <linux/device.h>
  18 #include <asm/arch/udc.h>
  19
  20 /* local PXA generic code */
  21 #include "../generic.h"
  22
  23 struct udc_info {
  24         int     discover;
  25         int     pullup;
  26 };
  27
  28 /* E740 E750 and E400 all use the same GPIOs */
  29 static struct udc_info e7xx_udc = {
  30         .discover      = GPIO_E7XX_USB_DISC,
  31         .pullup        = GPIO_E7XX_USB_PULLUP
  32 };
  33
  34 /* E800 is different, just to be awkward */
  35 static struct udc_info e800_udc = {
  36         .discover      = GPIO_E800_USB_DISC,
  37         .pullup        = GPIO_E800_USB_PULLUP
  38 };
  39
  40 static struct udc_info *udc;
  41
  42 static int eseries_udc_is_connected(void) {
  43         return (GPLR(udc->discover) & GPIO_bit(udc->discover));
  44 }
  45
  46 static void eseries_udc_command(int cmd) {
  47         switch(cmd){
  48                 case PXA2XX_UDC_CMD_DISCONNECT:
  49                         GPSR(udc->pullup) = GPIO_bit(udc->pullup);
  50                         break;
  51                 case PXA2XX_UDC_CMD_CONNECT:
  52                         GPCR(udc->pullup) = GPIO_bit(udc->pullup);
  53                         break;
  54                 default:
  55                         printk("eseries_udc_control: unknown command!\n");
  56                         break;
  57         }
  58 }
  59
  60 static struct pxa2xx_udc_mach_info eseries_udc_mach_info = {
  61         .udc_is_connected = eseries_udc_is_connected,
  62         .udc_command      = eseries_udc_command,
  63 };
  64
  65 static int __init eseries_udc_init(void) {
  66         if(machine_is_e330() || machine_is_e740() || machine_is_e750() ||
  67            machine_is_e400())
  68                 udc = &e7xx_udc;
  69         else if(machine_is_e800())
  70                 udc = &e800_udc;
  71         else
  72                 return -ENODEV;
  73
  74         pxa_set_udc_info(&eseries_udc_mach_info);
  75         return 0;
  76 }
  77
  78 module_init(eseries_udc_init);