arch/arm/mach-omap1/board-h2-mmc.c

   1 /*
   2  * linux/arch/arm/mach-omap1/board-h2-mmc.c
   3  *
   4  * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
   5  * Author: Felipe Balbi <felipe.lima@indt.org.br>
   6  *
   7  * This code is based on linux/arch/arm/mach-omap2/board-n800-mmc.c, which is:
   8  * Copyright (C) 2006 Nokia Corporation
   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/platform_device.h>
  16
  17 #include <linux/i2c/tps65010.h>
  18
  19 #include <mach/mmc.h>
  20 #include <mach/gpio.h>
  21
  22 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
  23
  24 static int mmc_set_power(struct device *dev, int slot, int power_on,
  25                                 int vdd)
  26 {
  27         if (power_on)
  28                 gpio_direction_output(H2_TPS_GPIO_MMC_PWR_EN, 1);
  29         else
  30                 gpio_direction_output(H2_TPS_GPIO_MMC_PWR_EN, 0);
  31
  32         return 0;
  33 }
  34
  35 static int mmc_late_init(struct device *dev)
  36 {
  37         int ret;
  38
  39         ret = gpio_request(H2_TPS_GPIO_MMC_PWR_EN, "MMC power");
  40         if (ret < 0)
  41                 return ret;
  42
  43         gpio_direction_output(H2_TPS_GPIO_MMC_PWR_EN, 0);
  44
  45         return ret;
  46 }
  47
  48 static void mmc_shutdown(struct device *dev)
  49 {
  50         gpio_free(H2_TPS_GPIO_MMC_PWR_EN);
  51 }
  52
  53 /*
  54  * H2 could use the following functions tested:
  55  * - mmc_get_cover_state that uses OMAP_MPUIO(1)
  56  * - mmc_get_wp that uses OMAP_MPUIO(3)
  57  */
  58 static struct omap_mmc_platform_data mmc1_data = {
  59         .nr_slots                       = 1,
  60         .init                           = mmc_late_init,
  61         .shutdown                       = mmc_shutdown,
  62         .dma_mask                       = 0xffffffff,
  63         .slots[0]       = {
  64                 .set_power              = mmc_set_power,
  65                 .ocr_mask               = MMC_VDD_28_29 | MMC_VDD_30_31 |
  66                                           MMC_VDD_32_33 | MMC_VDD_33_34,
  67                 .name                   = "mmcblk",
  68         },
  69 };
  70
  71 static struct omap_mmc_platform_data *mmc_data[OMAP16XX_NR_MMC];
  72
  73 void __init h2_mmc_init(void)
  74 {
  75         mmc_data[0] = &mmc1_data;
  76         omap1_init_mmc(mmc_data, OMAP16XX_NR_MMC);
  77 }
  78
  79 #else
  80
  81 void __init h2_mmc_init(void)
  82 {
  83 }
  84
  85 #endif