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kernel/linux-imx6_3.14.28/arch/arm/mach-omap1/board-h2-mmc.c 1.79 KB
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  /*
   * linux/arch/arm/mach-omap1/board-h2-mmc.c
   *
   * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
   * Author: Felipe Balbi <felipe.lima@indt.org.br>
   *
   * This code is based on linux/arch/arm/mach-omap2/board-n800-mmc.c, which is:
   * Copyright (C) 2006 Nokia Corporation
   *
   * 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 <linux/platform_data/gpio-omap.h>
  #include <linux/i2c/tps65010.h>
  
  #include "board-h2.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)
  {
  	gpio_set_value(H2_TPS_GPIO_MMC_PWR_EN, power_on);
  	return 0;
  }
  
  static int mmc_late_init(struct device *dev)
  {
  	int ret = gpio_request(H2_TPS_GPIO_MMC_PWR_EN, "MMC power");
  	if (ret < 0)
  		return ret;
  
  	gpio_direction_output(H2_TPS_GPIO_MMC_PWR_EN, 0);
  
  	return ret;
  }
  
  static void mmc_cleanup(struct device *dev)
  {
  	gpio_free(H2_TPS_GPIO_MMC_PWR_EN);
  }
  
  /*
   * H2 could use the following functions tested:
   * - mmc_get_cover_state that uses OMAP_MPUIO(1)
   * - mmc_get_wp that uses OMAP_MPUIO(3)
   */
  static struct omap_mmc_platform_data mmc1_data = {
  	.nr_slots                       = 1,
  	.init				= mmc_late_init,
  	.cleanup			= mmc_cleanup,
  	.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[OMAP16XX_NR_MMC];
  
  void __init h2_mmc_init(void)
  {
  	mmc_data[0] = &mmc1_data;
  	omap1_init_mmc(mmc_data, OMAP16XX_NR_MMC);
  }
  
  #else
  
  void __init h2_mmc_init(void)
  {
  }
  
  #endif