arch/arm/mach-omap1/board-h3-mmc.c

   1 /*
   2  * linux/arch/arm/mach-omap1/board-h3-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(H3_TPS_GPIO_MMC_PWR_EN, 1);
  29         else
  30                 gpio_direction_output(H3_TPS_GPIO_MMC_PWR_EN, 0);
  31
  32         return 0;
  33 }
  34
  35 /*
  36  * H3 could use the following functions tested:
  37  * - mmc_get_cover_state that uses OMAP_MPUIO(1)
  38  * - mmc_get_wp that maybe uses OMAP_MPUIO(3)
  39  */
  40 static struct omap_mmc_platform_data mmc1_data = {
  41         .nr_slots                       = 1,
  42         .dma_mask                       = 0xffffffff,
  43         .slots[0]       = {
  44                 .set_power              = mmc_set_power,
  45                 .ocr_mask               = MMC_VDD_28_29 | MMC_VDD_30_31 |
  46                                           MMC_VDD_32_33 | MMC_VDD_33_34,
  47                 .name                   = "mmcblk",
  48         },
  49 };
  50
  51 static struct omap_mmc_platform_data *mmc_data[OMAP16XX_NR_MMC];
  52
  53 void __init h3_mmc_init(void)
  54 {
  55         int ret;
  56
  57         ret = gpio_request(H3_TPS_GPIO_MMC_PWR_EN, "MMC power");
  58         if (ret < 0)
  59                 return;
  60         gpio_direction_output(H3_TPS_GPIO_MMC_PWR_EN, 0);
  61
  62         mmc_data[0] = &mmc1_data;
  63         omap1_init_mmc(mmc_data, OMAP16XX_NR_MMC);
  64 }
  65
  66 #else
  67
  68 void __init h3_mmc_init(void)
  69 {
  70 }
  71
  72 #endif