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