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

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * linux/arch/arm/mach-omap1/board-sx1-mmc.c
0004  *
0005  * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
0006  * Author: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
0007  *
0008  * This code is based on linux/arch/arm/mach-omap1/board-h2-mmc.c, which is:
0009  * Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
0010  */
0011
0012 #include <linux/gpio.h>
0013 #include <linux/platform_device.h>
0014
0015 #include "hardware.h"
0016 #include "board-sx1.h"
0017 #include "mmc.h"
0018
0019 #if IS_ENABLED(CONFIG_MMC_OMAP)
0020
0021 static int mmc_set_power(struct device *dev, int slot, int power_on,
0022                 int vdd)
0023 {
0024     int err;
0025     u8 dat = 0;
0026
0027     err = sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, &dat);
0028     if (err < 0)
0029         return err;
0030
0031     if (power_on)
0032         dat |= SOFIA_MMC_POWER;
0033     else
0034         dat &= ~SOFIA_MMC_POWER;
0035
0036     return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, dat);
0037 }
0038
0039 /* Cover switch is at OMAP_MPUIO(3) */
0040 static struct omap_mmc_platform_data mmc1_data = {
0041     .nr_slots                       = 1,
0042     .slots[0]       = {
0043         .set_power              = mmc_set_power,
0044         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
0045         .name                   = "mmcblk",
0046     },
0047 };
0048
0049 static struct omap_mmc_platform_data *mmc_data[OMAP15XX_NR_MMC];
0050
0051 void __init sx1_mmc_init(void)
0052 {
0053     mmc_data[0] = &mmc1_data;
0054     omap1_init_mmc(mmc_data, OMAP15XX_NR_MMC);
0055 }
0056
0057 #else
0058
0059 void __init sx1_mmc_init(void)
0060 {
0061 }
0062
0063 #endif