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 #include <linux/gpio.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/platform_data/gpio-omap.h>
  17 #include <linux/i2c/tps65010.h>
  18
  19 #include "board-h2.h"
  20 #include "mmc.h"
  21
  22 #if IS_ENABLED(CONFIG_MMC_OMAP)
  23
  24 static int mmc_set_power(struct device *dev, int slot, int power_on,
  25                                 int vdd)
  26 {
  27         gpio_set_value(H2_TPS_GPIO_MMC_PWR_EN, power_on);
  28         return 0;
  29 }
  30
  31 static int mmc_late_init(struct device *dev)
  32 {
  33         int ret = gpio_request(H2_TPS_GPIO_MMC_PWR_EN, "MMC power");
  34         if (ret < 0)
  35                 return ret;
  36
  37         gpio_direction_output(H2_TPS_GPIO_MMC_PWR_EN, 0);
  38
  39         return ret;
  40 }
  41
  42 static void mmc_cleanup(struct device *dev)
  43 {
  44         gpio_free(H2_TPS_GPIO_MMC_PWR_EN);
  45 }
  46
  47 /*
  48  * H2 could use the following functions tested:
  49  * - mmc_get_cover_state that uses OMAP_MPUIO(1)
  50  * - mmc_get_wp that uses OMAP_MPUIO(3)
  51  */
  52 static struct omap_mmc_platform_data mmc1_data = {
  53         .nr_slots                       = 1,
  54         .init                           = mmc_late_init,
  55         .cleanup                        = mmc_cleanup,
  56         .slots[0]       = {
  57                 .set_power              = mmc_set_power,
  58                 .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
  59                 .name                   = "mmcblk",
  60         },
  61 };
  62
  63 static struct omap_mmc_platform_data *mmc_data[OMAP16XX_NR_MMC];
  64
  65 void __init h2_mmc_init(void)
  66 {
  67         mmc_data[0] = &mmc1_data;
  68         omap1_init_mmc(mmc_data, OMAP16XX_NR_MMC);
  69 }
  70
  71 #else
  72
  73 void __init h2_mmc_init(void)
  74 {
  75 }
  76
  77 #endif