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/platform_device.h>
  13
  14 #include "hardware.h"
  15 #include "board-sx1.h"
  16 #include "mmc.h"
  17
  18 #if IS_ENABLED(CONFIG_MMC_OMAP)
  19
  20 static int mmc_set_power(struct device *dev, int slot, int power_on,
  21                                 int vdd)
  22 {
  23         int err;
  24         u8 dat = 0;
  25
  26         err = sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, &dat);
  27         if (err < 0)
  28                 return err;
  29
  30         if (power_on)
  31                 dat |= SOFIA_MMC_POWER;
  32         else
  33                 dat &= ~SOFIA_MMC_POWER;
  34
  35         return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, dat);
  36 }
  37
  38 /* Cover switch is at OMAP_MPUIO(3) */
  39 static struct omap_mmc_platform_data mmc1_data = {
  40         .nr_slots                       = 1,
  41         .slots[0]       = {
  42                 .set_power              = mmc_set_power,
  43                 .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
  44                 .name                   = "mmcblk",
  45         },
  46 };
  47
  48 static struct omap_mmc_platform_data *mmc_data[OMAP15XX_NR_MMC];
  49
  50 void __init sx1_mmc_init(void)
  51 {
  52         mmc_data[0] = &mmc1_data;
  53         omap1_init_mmc(mmc_data, OMAP15XX_NR_MMC);
  54 }
  55
  56 #else
  57
  58 void __init sx1_mmc_init(void)
  59 {
  60 }
  61
  62 #endif