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kernel/linux-imx6_3.14.28/arch/arm/mach-omap1/board-sx1-mmc.c 1.54 KB
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  /*
   * 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 <linux/gpio.h>
  #include <linux/platform_device.h>
  
  #include <mach/hardware.h>
  #include <mach/board-sx1.h>
  
  #include "mmc.h"
  
  #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
  
  static int mmc_set_power(struct device *dev, int slot, int power_on,
  				int vdd)
  {
  	int err;
  	u8 dat = 0;
  
  	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);
  }
  
  /* Cover switch is at OMAP_MPUIO(3) */
  static struct omap_mmc_platform_data mmc1_data = {
  	.nr_slots                       = 1,
  	.slots[0]       = {
  		.set_power              = mmc_set_power,
  		.ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
  		.name                   = "mmcblk",
  	},
  };
  
  static struct omap_mmc_platform_data *mmc_data[OMAP15XX_NR_MMC];
  
  void __init sx1_mmc_init(void)
  {
  	mmc_data[0] = &mmc1_data;
  	omap1_init_mmc(mmc_data, OMAP15XX_NR_MMC);
  }
  
  #else
  
  void __init sx1_mmc_init(void)
  {
  }
  
  #endif