aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-ux500/board-mop500-sdi.c
blob: 4b996676594e588150a889d4760a6171492d7844 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
/*
 * 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);
}