arch/arm/mach-omap1/board-sx1-mmc.c

   1 /*
   2  * linux/arch/arm/mach-omap1/board-sx1-mmc.c
   3  *
   4  * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
   5  * Author: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
   6  *
   7  * This code is based on linux/arch/arm/mach-omap1/board-h2-mmc.c, which is:
   8  * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/gpio.h>
  16 #include <linux/platform_device.h>
  17
  18 #include <mach/hardware.h>
  19 #include "board-sx1.h"
  20
  21 #include "mmc.h"
  22
  23 #if IS_ENABLED(CONFIG_MMC_OMAP)
  24
  25 static int mmc_set_power(struct device *dev, int slot, int power_on,
  26                                 int vdd)
  27 {
  28         int err;
  29         u8 dat = 0;
  30
  31         err = sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, &dat);
  32         if (err < 0)
  33                 return err;
  34
  35         if (power_on)
  36                 dat |= SOFIA_MMC_POWER;
  37         else
  38                 dat &= ~SOFIA_MMC_POWER;
  39
  40         return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, dat);
  41 }
  42
  43 /* Cover switch is at OMAP_MPUIO(3) */
  44 static struct omap_mmc_platform_data mmc1_data = {
  45         .nr_slots                       = 1,
  46         .slots[0]       = {
  47                 .set_power              = mmc_set_power,
  48                 .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
  49                 .name                   = "mmcblk",
  50         },
  51 };
  52
  53 static struct omap_mmc_platform_data *mmc_data[OMAP15XX_NR_MMC];
  54
  55 void __init sx1_mmc_init(void)
  56 {
  57         mmc_data[0] = &mmc1_data;
  58         omap1_init_mmc(mmc_data, OMAP15XX_NR_MMC);
  59 }
  60
  61 #else
  62
  63 void __init sx1_mmc_init(void)
  64 {
  65 }
  66
  67 #endif