arch/arm/mach-omap1/board-sx1-mmc.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * linux/arch/arm/mach-omap1/board-sx1-mmc.c
   4  *
   5  * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
   6  * Author: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
   7  *
   8  * This code is based on linux/arch/arm/mach-omap1/board-h2-mmc.c, which is:
   9  * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
  10  */
  11
  12 #include <linux/gpio.h>
  13 #include <linux/platform_device.h>
  14
  15 #include "hardware.h"
  16 #include "board-sx1.h"
  17 #include "mmc.h"
  18
  19 #if IS_ENABLED(CONFIG_MMC_OMAP)
  20
  21 static int mmc_set_power(struct device *dev, int slot, int power_on,
  22                                 int vdd)
  23 {
  24         int err;
  25         u8 dat = 0;
  26
  27         err = sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, &dat);
  28         if (err < 0)
  29                 return err;
  30
  31         if (power_on)
  32                 dat |= SOFIA_MMC_POWER;
  33         else
  34                 dat &= ~SOFIA_MMC_POWER;
  35
  36         return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, dat);
  37 }
  38
  39 /* Cover switch is at OMAP_MPUIO(3) */
  40 static struct omap_mmc_platform_data mmc1_data = {
  41         .nr_slots                       = 1,
  42         .slots[0]       = {
  43                 .set_power              = mmc_set_power,
  44                 .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
  45                 .name                   = "mmcblk",
  46         },
  47 };
  48
  49 static struct omap_mmc_platform_data *mmc_data[OMAP15XX_NR_MMC];
  50
  51 void __init sx1_mmc_init(void)
  52 {
  53         mmc_data[0] = &mmc1_data;
  54         omap1_init_mmc(mmc_data, OMAP15XX_NR_MMC);
  55 }
  56
  57 #else
  58
  59 void __init sx1_mmc_init(void)
  60 {
  61 }
  62
  63 #endif