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 #include <mach/mmc.h>
  22
  23 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
  24
  25 static int mmc_set_power(struct device *dev, int slot, int power_on,
  26                                 int vdd)
  27 {
  28         if (power_on)
  29                 gpio_direction_output(H2_TPS_GPIO_MMC_PWR_EN, 1);
  30         else
  31                 gpio_direction_output(H2_TPS_GPIO_MMC_PWR_EN, 0);
  32
  33         return 0;
  34 }
  35
  36 static int mmc_late_init(struct device *dev)
  37 {
  38         int ret;
  39
  40         ret = gpio_request(H2_TPS_GPIO_MMC_PWR_EN, "MMC power");
  41         if (ret < 0)
  42                 return ret;
  43
  44         gpio_direction_output(H2_TPS_GPIO_MMC_PWR_EN, 0);
  45
  46         return ret;
  47 }
  48
  49 static void mmc_shutdown(struct device *dev)
  50 {
  51         gpio_free(H2_TPS_GPIO_MMC_PWR_EN);
  52 }
  53
  54 /*
  55  * H2 could use the following functions tested:
  56  * - mmc_get_cover_state that uses OMAP_MPUIO(1)
  57  * - mmc_get_wp that uses OMAP_MPUIO(3)
  58  */
  59 static struct omap_mmc_platform_data mmc1_data = {
  60         .nr_slots                       = 1,
  61         .init                           = mmc_late_init,
  62         .shutdown                       = mmc_shutdown,
  63         .dma_mask                       = 0xffffffff,
  64         .slots[0]       = {
  65                 .set_power              = mmc_set_power,
  66                 .ocr_mask               = MMC_VDD_28_29 | MMC_VDD_30_31 |
  67                                           MMC_VDD_32_33 | MMC_VDD_33_34,
  68                 .name                   = "mmcblk",
  69         },
  70 };
  71
  72 static struct omap_mmc_platform_data *mmc_data[OMAP16XX_NR_MMC];
  73
  74 void __init h2_mmc_init(void)
  75 {
  76         mmc_data[0] = &mmc1_data;
  77         omap1_init_mmc(mmc_data, OMAP16XX_NR_MMC);
  78 }
  79
  80 #else
  81
  82 void __init h2_mmc_init(void)
  83 {
  84 }
  85
  86 #endif