forked from Minki/linux
edaa86a414
A small fixup for the v1(.0) ASIC. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
161 lines
3.4 KiB
C
161 lines
3.4 KiB
C
/*
|
|
* 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);
|
|
}
|