sa1111_jornada720.c

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/*
 * drivers/pcmcia/sa1100_jornada720.c
 *
 * Jornada720 PCMCIA specific routines
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/init.h>

#include <mach/hardware.h>
#include <asm/hardware/sa1111.h>
#include <asm/mach-types.h>

#include "sa1111_generic.h"

/* Does SOCKET1_3V actually do anything? */
#define SOCKET0_POWER   GPIO_GPIO0
#define SOCKET0_3V  GPIO_GPIO2
#define SOCKET1_POWER   (GPIO_GPIO1 | GPIO_GPIO3)
#define SOCKET1_3V  GPIO_GPIO3

static int
jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
    struct sa1111_pcmcia_socket *s = to_skt(skt);
    unsigned int pa_dwr_mask, pa_dwr_set;
    int ret;

    printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
        skt->nr, state->Vcc, state->Vpp);

    switch (skt->nr) {
    case 0:
        pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;

        switch (state->Vcc) {
        default:
        case  0:
            pa_dwr_set = 0;
            break;
        case 33:
            pa_dwr_set = SOCKET0_POWER | SOCKET0_3V;
            break;
        case 50:
            pa_dwr_set = SOCKET0_POWER;
            break;
        }
        break;

    case 1:
        pa_dwr_mask = SOCKET1_POWER;

        switch (state->Vcc) {
        default:
        case 0:
            pa_dwr_set = 0;
            break;
        case 33:
            pa_dwr_set = SOCKET1_POWER;
            break;
        case 50:
            pa_dwr_set = SOCKET1_POWER;
            break;
        }
        break;

    default:
        return -1;
    }

    if (state->Vpp != state->Vcc && state->Vpp != 0) {
        printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
            __func__, state->Vpp);
        return -EPERM;
    }

    ret = sa1111_pcmcia_configure_socket(skt, state);
    if (ret == 0)
        sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);

    return ret;
}

static struct pcmcia_low_level jornada720_pcmcia_ops = {
    .owner          = THIS_MODULE,
    .configure_socket   = jornada720_pcmcia_configure_socket,
    .first          = 0,
    .nr         = 2,
};

int __devinit pcmcia_jornada720_init(struct device *dev)
{
    int ret = -ENODEV;

    if (machine_is_jornada720()) {
        unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;

        GRER |= 0x00000002;

        /* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
        sa1111_set_io_dir(dev, pin, 0, 0);
        sa1111_set_io(dev, pin, 0);
        sa1111_set_sleep_io(dev, pin, 0);

        sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
        ret = sa1111_pcmcia_add(dev, &jornada720_pcmcia_ops,
                sa11xx_drv_pcmcia_add_one);
    }

    return ret;
}