LXR linux/drivers/pcmcia/sa1111

   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/* Does SOCKET1_3V actually do anything? */
  20#define SOCKET0_POWER   GPIO_GPIO0
  21#define SOCKET0_3V      GPIO_GPIO2
  22#define SOCKET1_POWER   (GPIO_GPIO1 | GPIO_GPIO3)
  23#define SOCKET1_3V      GPIO_GPIO3
  24
  25static int
  26jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
  27{
  28        struct sa1111_pcmcia_socket *s = to_skt(skt);
  29        unsigned int pa_dwr_mask, pa_dwr_set;
  30        int ret;
  31
  32        printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
  33                skt->nr, state->Vcc, state->Vpp);
  34
  35        switch (skt->nr) {
  36        case 0:
  37                pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;
  38
  39                switch (state->Vcc) {
  40                default:
  41                case  0:
  42                        pa_dwr_set = 0;
  43                        break;
  44                case 33:
  45                        pa_dwr_set = SOCKET0_POWER | SOCKET0_3V;
  46                        break;
  47                case 50:
  48                        pa_dwr_set = SOCKET0_POWER;
  49                        break;
  50                }
  51                break;
  52
  53        case 1:
  54                pa_dwr_mask = SOCKET1_POWER;
  55
  56                switch (state->Vcc) {
  57                default:
  58                case 0:
  59                        pa_dwr_set = 0;
  60                        break;
  61                case 33:
  62                        pa_dwr_set = SOCKET1_POWER;
  63                        break;
  64                case 50:
  65                        pa_dwr_set = SOCKET1_POWER;
  66                        break;
  67                }
  68                break;
  69
  70        default:
  71                return -1;
  72        }
  73
  74        if (state->Vpp != state->Vcc && state->Vpp != 0) {
  75                printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
  76                        __func__, state->Vpp);
  77                return -EPERM;
  78        }
  79
  80        ret = sa1111_pcmcia_configure_socket(skt, state);
  81        if (ret == 0)
  82                sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
  83
  84        return ret;
  85}
  86
  87static struct pcmcia_low_level jornada720_pcmcia_ops = {
  88        .owner                  = THIS_MODULE,
  89        .configure_socket       = jornada720_pcmcia_configure_socket,
  90        .first                  = 0,
  91        .nr                     = 2,
  92};
  93
  94int pcmcia_jornada720_init(struct device *dev)
  95{
  96        int ret = -ENODEV;
  97
  98        if (machine_is_jornada720()) {
  99                unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
 100
 101                GRER |= 0x00000002;
 102
 103                /* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
 104                sa1111_set_io_dir(dev, pin, 0, 0);
 105                sa1111_set_io(dev, pin, 0);
 106                sa1111_set_sleep_io(dev, pin, 0);
 107
 108                sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
 109                ret = sa1111_pcmcia_add(dev, &jornada720_pcmcia_ops,
 110                                sa11xx_drv_pcmcia_add_one);
 111        }
 112
 113        return ret;
 114}
 115