drivers/pcmcia/sa1111_jornada720.c

   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
  26 static int
  27 jornada720_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
  88 static 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
  95 int 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 }