linux/drivers/pcmcia/sa1100_jornada720.c
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   1/*
   2 * drivers/pcmcia/sa1100_jornada720.c
   3 *
   4 * Jornada720 PCMCIA specific routines
   5 *
   6 */
   7#include <linux/module.h>
   8#include <linux/kernel.h>
   9#include <linux/device.h>
  10#include <linux/errno.h>
  11#include <linux/init.h>
  12
  13#include <mach/hardware.h>
  14#include <asm/hardware/sa1111.h>
  15#include <asm/mach-types.h>
  16
  17#include "sa1111_generic.h"
  18
  19#define SOCKET0_POWER   GPIO_GPIO0
  20#define SOCKET0_3V      GPIO_GPIO2
  21#define SOCKET1_POWER   (GPIO_GPIO1 | GPIO_GPIO3)
  22#warning *** Does SOCKET1_3V actually do anything?
  23#define SOCKET1_3V      GPIO_GPIO3
  24
  25static int jornada720_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
  26{
  27  /*
  28   * What is all this crap for?
  29   */
  30  GRER |= 0x00000002;
  31  /* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
  32  sa1111_set_io_dir(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0);
  33  sa1111_set_io(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
  34  sa1111_set_sleep_io(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
  35
  36  return sa1111_pcmcia_hw_init(skt);
  37}
  38
  39static int
  40jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
  41{
  42  unsigned int pa_dwr_mask, pa_dwr_set;
  43  int ret;
  44
  45printk("%s(): config socket %d vcc %d vpp %d\n", __func__,
  46        skt->nr, state->Vcc, state->Vpp);
  47
  48  switch (skt->nr) {
  49  case 0:
  50    pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;
  51
  52    switch (state->Vcc) {
  53    default:
  54    case 0:     pa_dwr_set = 0;                                 break;
  55    case 33:    pa_dwr_set = SOCKET0_POWER | SOCKET0_3V;        break;
  56    case 50:    pa_dwr_set = SOCKET0_POWER;                     break;
  57    }
  58    break;
  59
  60  case 1:
  61    pa_dwr_mask = SOCKET1_POWER;
  62
  63    switch (state->Vcc) {
  64    default:
  65    case 0:     pa_dwr_set = 0;                                 break;
  66    case 33:    pa_dwr_set = SOCKET1_POWER;                     break;
  67    case 50:    pa_dwr_set = SOCKET1_POWER;                     break;
  68    }
  69    break;
  70
  71  default:
  72    return -1;
  73  }
  74
  75  if (state->Vpp != state->Vcc && state->Vpp != 0) {
  76    printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
  77           __func__, state->Vpp);
  78    return -1;
  79  }
  80
  81  ret = sa1111_pcmcia_configure_socket(skt, state);
  82  if (ret == 0) {
  83    unsigned long flags;
  84
  85    local_irq_save(flags);
  86    sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, pa_dwr_set);
  87    local_irq_restore(flags);
  88  }
  89
  90  return ret;
  91}
  92
  93static struct pcmcia_low_level jornada720_pcmcia_ops = {
  94  .owner                = THIS_MODULE,
  95  .hw_init              = jornada720_pcmcia_hw_init,
  96  .hw_shutdown          = sa1111_pcmcia_hw_shutdown,
  97  .socket_state         = sa1111_pcmcia_socket_state,
  98  .configure_socket     = jornada720_pcmcia_configure_socket,
  99
 100  .socket_init          = sa1111_pcmcia_socket_init,
 101  .socket_suspend       = sa1111_pcmcia_socket_suspend,
 102};
 103
 104int __devinit pcmcia_jornada720_init(struct device *dev)
 105{
 106        int ret = -ENODEV;
 107
 108        if (machine_is_jornada720())
 109                ret = sa11xx_drv_pcmcia_probe(dev, &jornada720_pcmcia_ops, 0, 2);
 110
 111        return ret;
 112}
 113