2 * Copyright (C) ST-Ericsson SA 2010
4 * Author: Hanumath Prasad <hanumath.prasad@stericsson.com>
5 * License terms: GNU General Public License (GPL) version 2
8 #include <linux/kernel.h>
9 #include <linux/gpio.h>
10 #include <linux/amba/bus.h>
11 #include <linux/amba/mmci.h>
12 #include <linux/mmc/host.h>
13 #include <linux/platform_device.h>
15 #include <plat/pincfg.h>
16 #include <mach/devices.h>
17 #include <mach/hardware.h>
19 #include "devices-db8500.h"
20 #include "pins-db8500.h"
21 #include "board-mop500.h"
23 static pin_cfg_t mop500_sdi_pins[] = {
24 /* SDI0 (MicroSD slot) */
37 /* SDI4 (on-board eMMC) */
51 static pin_cfg_t mop500_sdi2_pins[] = {
67 * SDI 0 (MicroSD slot)
71 #define MCI_DATA2DIREN (1 << 2)
72 #define MCI_CMDDIREN (1 << 3)
73 #define MCI_DATA0DIREN (1 << 4)
74 #define MCI_DATA31DIREN (1 << 5)
75 #define MCI_FBCLKEN (1 << 7)
77 static u32 mop500_sdi0_vdd_handler(struct device *dev, unsigned int vdd,
78 unsigned char power_mode)
80 if (power_mode == MMC_POWER_UP)
81 gpio_set_value_cansleep(GPIO_SDMMC_EN, 1);
82 else if (power_mode == MMC_POWER_OFF)
83 gpio_set_value_cansleep(GPIO_SDMMC_EN, 0);
85 return MCI_FBCLKEN | MCI_CMDDIREN | MCI_DATA0DIREN |
86 MCI_DATA2DIREN | MCI_DATA31DIREN;
89 static struct mmci_platform_data mop500_sdi0_data = {
90 .vdd_handler = mop500_sdi0_vdd_handler,
91 .ocr_mask = MMC_VDD_29_30,
93 .capabilities = MMC_CAP_4_BIT_DATA,
94 .gpio_cd = GPIO_SDMMC_CD,
98 void mop500_sdi_tc35892_init(void)
102 ret = gpio_request(GPIO_SDMMC_EN, "SDMMC_EN");
104 ret = gpio_request(GPIO_SDMMC_1V8_3V_SEL,
105 "GPIO_SDMMC_1V8_3V_SEL");
109 gpio_direction_output(GPIO_SDMMC_1V8_3V_SEL, 1);
110 gpio_direction_output(GPIO_SDMMC_EN, 0);
112 db8500_add_sdi0(&mop500_sdi0_data);
116 * SDI 2 (POP eMMC, not on DB8500ed)
119 static struct mmci_platform_data mop500_sdi2_data = {
120 .ocr_mask = MMC_VDD_165_195,
122 .capabilities = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
128 * SDI 4 (on-board eMMC)
131 static struct mmci_platform_data mop500_sdi4_data = {
132 .ocr_mask = MMC_VDD_29_30,
134 .capabilities = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA |
135 MMC_CAP_MMC_HIGHSPEED,
140 void __init mop500_sdi_init(void)
142 nmk_config_pins(mop500_sdi_pins, ARRAY_SIZE(mop500_sdi_pins));
145 * sdi0 will finally be added when the TC35892 initializes and calls
146 * mop500_sdi_tc35892_init() above.
150 if (!cpu_is_u8500ed()) {
151 nmk_config_pins(mop500_sdi2_pins, ARRAY_SIZE(mop500_sdi2_pins));
152 /* POP eMMC on v1.0 has problems with high speed */
153 if (!cpu_is_u8500v10())
154 mop500_sdi2_data.capabilities |= MMC_CAP_MMC_HIGHSPEED;
155 db8500_add_sdi2(&mop500_sdi2_data);
159 db8500_add_sdi4(&mop500_sdi4_data);