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/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Hanumath Prasad <hanumath.prasad@stericsson.com>
* License terms: GNU General Public License (GPL) version 2
*/
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/amba/bus.h>
#include <linux/amba/mmci.h>
#include <linux/mmc/host.h>
#include <linux/platform_device.h>
#include <plat/pincfg.h>
#include <mach/devices.h>
#include <mach/hardware.h>
#include "devices-db8500.h"
#include "pins-db8500.h"
#include "board-mop500.h"
static pin_cfg_t mop500_sdi_pins[] = {
/* SDI0 (MicroSD slot) */
GPIO18_MC0_CMDDIR,
GPIO19_MC0_DAT0DIR,
GPIO20_MC0_DAT2DIR,
GPIO21_MC0_DAT31DIR,
GPIO22_MC0_FBCLK,
GPIO23_MC0_CLK,
GPIO24_MC0_CMD,
GPIO25_MC0_DAT0,
GPIO26_MC0_DAT1,
GPIO27_MC0_DAT2,
GPIO28_MC0_DAT3,
/* SDI4 (on-board eMMC) */
GPIO197_MC4_DAT3,
GPIO198_MC4_DAT2,
GPIO199_MC4_DAT1,
GPIO200_MC4_DAT0,
GPIO201_MC4_CMD,
GPIO202_MC4_FBCLK,
GPIO203_MC4_CLK,
GPIO204_MC4_DAT7,
GPIO205_MC4_DAT6,
GPIO206_MC4_DAT5,
GPIO207_MC4_DAT4,
};
static pin_cfg_t mop500_sdi2_pins[] = {
/* SDI2 (POP eMMC) */
GPIO128_MC2_CLK,
GPIO129_MC2_CMD,
GPIO130_MC2_FBCLK,
GPIO131_MC2_DAT0,
GPIO132_MC2_DAT1,
GPIO133_MC2_DAT2,
GPIO134_MC2_DAT3,
GPIO135_MC2_DAT4,
GPIO136_MC2_DAT5,
GPIO137_MC2_DAT6,
GPIO138_MC2_DAT7,
};
/*
* SDI 0 (MicroSD slot)
*/
/* MMCIPOWER bits */
#define MCI_DATA2DIREN (1 << 2)
#define MCI_CMDDIREN (1 << 3)
#define MCI_DATA0DIREN (1 << 4)
#define MCI_DATA31DIREN (1 << 5)
#define MCI_FBCLKEN (1 << 7)
static u32 mop500_sdi0_vdd_handler(struct device *dev, unsigned int vdd,
unsigned char power_mode)
{
if (power_mode == MMC_POWER_UP)
gpio_set_value_cansleep(GPIO_SDMMC_EN, 1);
else if (power_mode == MMC_POWER_OFF)
gpio_set_value_cansleep(GPIO_SDMMC_EN, 0);
return MCI_FBCLKEN | MCI_CMDDIREN | MCI_DATA0DIREN |
MCI_DATA2DIREN | MCI_DATA31DIREN;
}
static struct mmci_platform_data mop500_sdi0_data = {
.vdd_handler = mop500_sdi0_vdd_handler,
.ocr_mask = MMC_VDD_29_30,
.f_max = 100000000,
.capabilities = MMC_CAP_4_BIT_DATA,
.gpio_cd = GPIO_SDMMC_CD,
.gpio_wp = -1,
};
void mop500_sdi_tc35892_init(void)
{
int ret;
ret = gpio_request(GPIO_SDMMC_EN, "SDMMC_EN");
if (!ret)
ret = gpio_request(GPIO_SDMMC_1V8_3V_SEL,
"GPIO_SDMMC_1V8_3V_SEL");
if (ret)
return;
gpio_direction_output(GPIO_SDMMC_1V8_3V_SEL, 1);
gpio_direction_output(GPIO_SDMMC_EN, 0);
db8500_add_sdi0(&mop500_sdi0_data);
}
/*
* SDI 2 (POP eMMC, not on DB8500ed)
*/
static struct mmci_platform_data mop500_sdi2_data = {
.ocr_mask = MMC_VDD_165_195,
.f_max = 100000000,
.capabilities = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
.gpio_cd = -1,
.gpio_wp = -1,
};
/*
* SDI 4 (on-board eMMC)
*/
static struct mmci_platform_data mop500_sdi4_data = {
.ocr_mask = MMC_VDD_29_30,
.f_max = 100000000,
.capabilities = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA |
MMC_CAP_MMC_HIGHSPEED,
.gpio_cd = -1,
.gpio_wp = -1,
};
void __init mop500_sdi_init(void)
{
nmk_config_pins(mop500_sdi_pins, ARRAY_SIZE(mop500_sdi_pins));
/*
* sdi0 will finally be added when the TC35892 initializes and calls
* mop500_sdi_tc35892_init() above.
*/
/* PoP:ed eMMC */
if (!cpu_is_u8500ed()) {
nmk_config_pins(mop500_sdi2_pins, ARRAY_SIZE(mop500_sdi2_pins));
/* POP eMMC on v1.0 has problems with high speed */
if (!cpu_is_u8500v10())
mop500_sdi2_data.capabilities |= MMC_CAP_MMC_HIGHSPEED;
db8500_add_sdi2(&mop500_sdi2_data);
}
/* On-board eMMC */
db8500_add_sdi4(&mop500_sdi4_data);
}
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