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board-sx1-mmc.c

/*
 * linux/arch/arm/mach-omap1/board-sx1-mmc.c
 *
 * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
 * Author: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
 *
 * This code is based on linux/arch/arm/mach-omap1/board-h2-mmc.c, which is:
 * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <mach/hardware.h>
#include <mach/mmc.h>
#include <mach/gpio.h>

#ifdef CONFIG_MMC_OMAP
static int slot_cover_open;
static struct device *mmc_device;

static int sx1_mmc_set_power(struct device *dev, int slot, int power_on,
                        int vdd)
{
      int err;
      u8 dat = 0;

#ifdef CONFIG_MMC_DEBUG
      dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
            power_on ? "on" : "off", vdd);
#endif

      if (slot != 0) {
            dev_err(dev, "No such slot %d\n", slot + 1);
            return -ENODEV;
      }

      err = sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, &dat);
      if (err < 0)
            return err;

      if (power_on)
            dat |= SOFIA_MMC_POWER;
      else
            dat &= ~SOFIA_MMC_POWER;

      return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, dat);
}

static int sx1_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
{
#ifdef CONFIG_MMC_DEBUG
      dev_dbg(dev, "Set slot %d bus_mode %s\n", slot + 1,
            bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
#endif
      if (slot != 0) {
            dev_err(dev, "No such slot %d\n", slot + 1);
            return -ENODEV;
      }

      return 0;
}

static int sx1_mmc_get_cover_state(struct device *dev, int slot)
{
      BUG_ON(slot != 0);

      return slot_cover_open;
}

void sx1_mmc_slot_cover_handler(void *arg, int state)
{
      if (mmc_device == NULL)
            return;

      slot_cover_open = state;
      omap_mmc_notify_cover_event(mmc_device, 0, state);
}

static int sx1_mmc_late_init(struct device *dev)
{
      int ret = 0;

      mmc_device = dev;

      return ret;
}

static void sx1_mmc_cleanup(struct device *dev)
{
}

static struct omap_mmc_platform_data sx1_mmc_data = {
      .nr_slots                       = 1,
      .switch_slot                    = NULL,
      .init                           = sx1_mmc_late_init,
      .cleanup                        = sx1_mmc_cleanup,
      .slots[0]       = {
            .set_power              = sx1_mmc_set_power,
            .set_bus_mode           = sx1_mmc_set_bus_mode,
            .get_ro                 = NULL,
            .get_cover_state        = sx1_mmc_get_cover_state,
            .ocr_mask               = MMC_VDD_28_29 | MMC_VDD_30_31 |
                                MMC_VDD_32_33 | MMC_VDD_33_34,
            .name                   = "mmcblk",
      },
};

void __init sx1_mmc_init(void)
{
      omap_set_mmc_info(1, &sx1_mmc_data);
}

#else

void __init sx1_mmc_init(void)
{
}

void sx1_mmc_slot_cover_handler(void *arg, int state)
{
}
#endif

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