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#include <linux/io.h>
  13
  14#include <mach/hardware.h>
  15#include <asm/hardware/sa1111.h>
  16#include <asm/mach-types.h>
  17
  18#include "sa1111_generic.h"
  19
  20/* Does SOCKET1_3V actually do anything? */
  21#define SOCKET0_POWER   GPIO_GPIO0
  22#define SOCKET0_3V      GPIO_GPIO2
  23#define SOCKET1_POWER   (GPIO_GPIO1 | GPIO_GPIO3)
  24#define SOCKET1_3V      GPIO_GPIO3
  25
  26static int
  27jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
  28{
  29        struct sa1111_pcmcia_socket *s = to_skt(skt);
  30        unsigned int pa_dwr_mask, pa_dwr_set;
  31        int ret;
  32
  33        printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
  34                skt->nr, state->Vcc, state->Vpp);
  35
  36        switch (skt->nr) {
  37        case 0:
  38                pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;
  39
  40                switch (state->Vcc) {
  41                default:
  42                case  0:
  43                        pa_dwr_set = 0;
  44                        break;
  45                case 33:
  46                        pa_dwr_set = SOCKET0_POWER | SOCKET0_3V;
  47                        break;
  48                case 50:
  49                        pa_dwr_set = SOCKET0_POWER;
  50                        break;
  51                }
  52                break;
  53
  54        case 1:
  55                pa_dwr_mask = SOCKET1_POWER;
  56
  57                switch (state->Vcc) {
  58                default:
  59                case 0:
  60                        pa_dwr_set = 0;
  61                        break;
  62                case 33:
  63                        pa_dwr_set = SOCKET1_POWER;
  64                        break;
  65                case 50:
  66                        pa_dwr_set = SOCKET1_POWER;
  67                        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 -EPERM;
  79        }
  80
  81        ret = sa1111_pcmcia_configure_socket(skt, state);
  82        if (ret == 0)
  83                sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
  84
  85        return ret;
  86}
  87
  88static struct pcmcia_low_level jornada720_pcmcia_ops = {
  89        .owner                  = THIS_MODULE,
  90        .configure_socket       = jornada720_pcmcia_configure_socket,
  91        .first                  = 0,
  92        .nr                     = 2,
  93};
  94
  95int pcmcia_jornada720_init(struct sa1111_dev *sadev)
  96{
  97        unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;
  98
  99        /* Fixme: why messing around with SA11x0's GPIO1? */
 100        GRER |= 0x00000002;
 101
 102        /* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
 103        sa1111_set_io_dir(sadev, pin, 0, 0);
 104        sa1111_set_io(sadev, pin, 0);
 105        sa1111_set_sleep_io(sadev, pin, 0);
 106
 107        sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
 108        return sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops,
 109                                 sa11xx_drv_pcmcia_add_one);
 110}
 111