omap mmc: Add low-level initialization for hsmmc controller

Add low-level initialization for hsmmc controller. Merged into
this patch patch are various improvments and board support by
Grazvydas Ignotas and David Brownell.

Also change wire4 to be wires, as some newer controllers support
8 data lines.

Cc: Pierre Ossman <drzeus-mmc@drzeus.cx>
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

9 files changed, 701 insertions, 7 deletions

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index f12c43e4932f..bbd12bc10fdc 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -27,10 +27,15 @@ obj-$(CONFIG_ARCH_OMAP3)		+= clock34xx.o
 # Specific board support
 obj-$(CONFIG_MACH_OMAP_GENERIC)		+= board-generic.o
 obj-$(CONFIG_MACH_OMAP_H4)		+= board-h4.o
-obj-$(CONFIG_MACH_OMAP_2430SDP)		+= board-2430sdp.o
+obj-$(CONFIG_MACH_OMAP_2430SDP)		+= board-2430sdp.o \
+					   mmc-twl4030.o
 obj-$(CONFIG_MACH_OMAP_APOLLON)		+= board-apollon.o
-obj-$(CONFIG_MACH_OMAP3_BEAGLE)		+= board-omap3beagle.o
-obj-$(CONFIG_MACH_OMAP_LDP)		+= board-ldp.o
-obj-$(CONFIG_MACH_OVERO)		+= board-overo.o
-obj-$(CONFIG_MACH_OMAP3_PANDORA)	+= board-omap3pandora.o
+obj-$(CONFIG_MACH_OMAP3_BEAGLE)		+= board-omap3beagle.o \
+					   mmc-twl4030.o
+obj-$(CONFIG_MACH_OMAP_LDP)		+= board-ldp.o \
+					   mmc-twl4030.o
+obj-$(CONFIG_MACH_OVERO)		+= board-overo.o \
+					   mmc-twl4030.o
+obj-$(CONFIG_MACH_OMAP3_PANDORA)	+= board-omap3pandora.o \
+					   mmc-twl4030.o
 
diff --git a/arch/arm/mach-omap2/board-2430sdp.c b/arch/arm/mach-omap2/board-2430sdp.c
index 6748de6e19a8..83fa37211d77 100644
--- a/arch/arm/mach-omap2/board-2430sdp.c
+++ b/arch/arm/mach-omap2/board-2430sdp.c
@@ -19,6 +19,7 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/delay.h>
+#include <linux/i2c/twl4030.h>
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/io.h>
@@ -35,6 +36,7 @@
 #include <mach/common.h>
 #include <mach/gpmc.h>
 
+#include "mmc-twl4030.h"
 
 #define	SDP2430_FLASH_CS	0
 #define	SDP2430_SMC91X_CS	5
@@ -197,12 +199,58 @@ static struct omap_board_config_kernel sdp2430_config[] = {
 	{OMAP_TAG_UART, &sdp2430_uart_config},
 };
 
+
+static struct twl4030_gpio_platform_data sdp2430_gpio_data = {
+	.gpio_base	= OMAP_MAX_GPIO_LINES,
+	.irq_base	= TWL4030_GPIO_IRQ_BASE,
+	.irq_end	= TWL4030_GPIO_IRQ_END,
+};
+
+static struct twl4030_platform_data sdp2430_twldata = {
+	.irq_base	= TWL4030_IRQ_BASE,
+	.irq_end	= TWL4030_IRQ_END,
+
+	/* platform_data for children goes here */
+	.gpio		= &sdp2430_gpio_data,
+};
+
+static struct i2c_board_info __initdata sdp2430_i2c_boardinfo[] = {
+	{
+		I2C_BOARD_INFO("twl4030", 0x48),
+		.flags = I2C_CLIENT_WAKE,
+		.irq = INT_24XX_SYS_NIRQ,
+		.platform_data = &sdp2430_twldata,
+	},
+};
+
+static int __init omap2430_i2c_init(void)
+{
+	omap_register_i2c_bus(1, 400, NULL, 0);
+	omap_register_i2c_bus(2, 2600, sdp2430_i2c_boardinfo,
+			ARRAY_SIZE(sdp2430_i2c_boardinfo));
+	return 0;
+}
+
+static struct twl4030_hsmmc_info mmc[] __initdata = {
+	{
+		.mmc		= 1,
+		.wires		= 4,
+		.gpio_cd	= -EINVAL,
+		.gpio_wp	= -EINVAL,
+		.ext_clock	= 1,
+	},
+	{}	/* Terminator */
+};
+
 static void __init omap_2430sdp_init(void)
 {
+	omap2430_i2c_init();
+
 	platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 	omap_board_config = sdp2430_config;
 	omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 	omap_serial_init();
+	twl4030_mmc_init(mmc);
 }
 
 static void __init omap_2430sdp_map_io(void)
diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
index 43c7ac4b7f8f..aa6972781e4a 100644
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -21,6 +21,7 @@
 #include <linux/clk.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
+#include <linux/i2c/twl4030.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
@@ -38,6 +39,8 @@
 #include <asm/delay.h>
 #include <mach/control.h>
 
+#include "mmc-twl4030.h"
+
 #define SDP3430_SMC91X_CS	3
 
 static struct resource ldp_smc911x_resources[] = {
@@ -109,14 +112,48 @@ static struct omap_board_config_kernel ldp_config[] __initdata = {
 	{ OMAP_TAG_UART,	&ldp_uart_config },
 };
 
+static struct twl4030_gpio_platform_data ldp_gpio_data = {
+	.gpio_base	= OMAP_MAX_GPIO_LINES,
+	.irq_base	= TWL4030_GPIO_IRQ_BASE,
+	.irq_end	= TWL4030_GPIO_IRQ_END,
+};
+
+static struct twl4030_platform_data ldp_twldata = {
+	.irq_base	= TWL4030_IRQ_BASE,
+	.irq_end	= TWL4030_IRQ_END,
+
+	/* platform_data for children goes here */
+	.gpio		= &ldp_gpio_data,
+};
+
+static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
+	{
+		I2C_BOARD_INFO("twl4030", 0x48),
+		.flags = I2C_CLIENT_WAKE,
+		.irq = INT_34XX_SYS_NIRQ,
+		.platform_data = &ldp_twldata,
+	},
+};
+
 static int __init omap_i2c_init(void)
 {
-	omap_register_i2c_bus(1, 2600, NULL, 0);
+	omap_register_i2c_bus(1, 2600, ldp_i2c_boardinfo,
+			ARRAY_SIZE(ldp_i2c_boardinfo));
 	omap_register_i2c_bus(2, 400, NULL, 0);
 	omap_register_i2c_bus(3, 400, NULL, 0);
 	return 0;
 }
 
+static struct twl4030_hsmmc_info mmc[] __initdata = {
+	{
+		.mmc		= 1,
+		.wires		= 4,
+		.gpio_cd	= -EINVAL,
+		.gpio_wp	= -EINVAL,
+	},
+	{}	/* Terminator */
+};
+
 static void __init omap_ldp_init(void)
 {
 	omap_i2c_init();
@@ -124,6 +161,7 @@ static void __init omap_ldp_init(void)
 	omap_board_config = ldp_config;
 	omap_board_config_size = ARRAY_SIZE(ldp_config);
 	omap_serial_init();
+	twl4030_mmc_init(mmc);
 }
 
 static void __init omap_ldp_map_io(void)
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index baa79674e9d5..9e5ada01b5fa 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -38,7 +38,9 @@
 #include <mach/common.h>
 #include <mach/gpmc.h>
 #include <mach/nand.h>
+#include <mach/mux.h>
 
+#include "mmc-twl4030.h"
 
 #define GPMC_CS0_BASE  0x60
 #define GPMC_CS_SIZE   0x30
@@ -103,6 +105,78 @@ static struct omap_uart_config omap3_beagle_uart_config __initdata = {
 	.enabled_uarts	= ((1 << 0) | (1 << 1) | (1 << 2)),
 };
 
+static struct twl4030_hsmmc_info mmc[] = {
+	{
+		.mmc		= 1,
+		.wires		= 8,
+		.gpio_wp	= 29,
+	},
+	{}	/* Terminator */
+};
+
+static struct gpio_led gpio_leds[];
+
+static int beagle_twl_gpio_setup(struct device *dev,
+		unsigned gpio, unsigned ngpio)
+{
+	/* gpio + 0 is "mmc0_cd" (input/IRQ) */
+
+	/* REVISIT: need ehci-omap hooks for external VBUS
+	 * power switch and overcurrent detect
+	 */
+
+	gpio_request(gpio + 1, "EHCI_nOC");
+	gpio_direction_input(gpio + 1);
+
+	/* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
+	gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
+	gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
+
+	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
+	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
+
+	return 0;
+}
+
+static struct twl4030_gpio_platform_data beagle_gpio_data = {
+	.gpio_base	= OMAP_MAX_GPIO_LINES,
+	.irq_base	= TWL4030_GPIO_IRQ_BASE,
+	.irq_end	= TWL4030_GPIO_IRQ_END,
+	.use_leds	= true,
+	.pullups	= BIT(1),
+	.pulldowns	= BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
+				| BIT(15) | BIT(16) | BIT(17),
+	.setup		= beagle_twl_gpio_setup,
+};
+
+static struct twl4030_platform_data beagle_twldata = {
+	.irq_base	= TWL4030_IRQ_BASE,
+	.irq_end	= TWL4030_IRQ_END,
+
+	/* platform_data for children goes here */
+	.gpio		= &beagle_gpio_data,
+};
+
+static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
+	{
+		I2C_BOARD_INFO("twl4030", 0x48),
+		.flags = I2C_CLIENT_WAKE,
+		.irq = INT_34XX_SYS_NIRQ,
+		.platform_data = &beagle_twldata,
+	},
+};
+
+static int __init omap3_beagle_i2c_init(void)
+{
+	omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
+			ARRAY_SIZE(beagle_i2c_boardinfo));
+#ifdef CONFIG_I2C2_OMAP_BEAGLE
+	omap_register_i2c_bus(2, 400, NULL, 0);
+#endif
+	omap_register_i2c_bus(3, 400, NULL, 0);
+	return 0;
+}
+
 static void __init omap3_beagle_init_irq(void)
 {
 	omap2_init_common_hw();
@@ -130,6 +204,11 @@ static struct gpio_led gpio_leds[] = {
 		.default_trigger	= "mmc0",
 		.gpio			= 149,
 	},
+	{
+		.name			= "beagleboard::pmu_stat",
+		.gpio			= -EINVAL,	/* gets replaced */
+		.active_low		= true,
+	},
 };
 
 static struct gpio_led_platform_data gpio_led_info = {
@@ -218,11 +297,22 @@ static void __init omap3beagle_flash_init(void)
 
 static void __init omap3_beagle_init(void)
 {
+	omap3_beagle_i2c_init();
 	platform_add_devices(omap3_beagle_devices,
 			ARRAY_SIZE(omap3_beagle_devices));
 	omap_board_config = omap3_beagle_config;
 	omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
 	omap_serial_init();
+
+	omap_cfg_reg(AH8_34XX_GPIO29);
+	mmc[0].gpio_cd = gpio + 0;
+	twl4030_mmc_init(mmc);
+
+	omap_cfg_reg(J25_34XX_GPIO170);
+	gpio_request(170, "DVI_nPD");
+	/* REVISIT leave DVI powered down until it's needed ... */
+	gpio_direction_output(170, true);
+
 	omap3beagle_flash_init();
 }
 
diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
index 7236c7be05b3..b3196107afdb 100644
--- a/arch/arm/mach-omap2/board-omap3pandora.c
+++ b/arch/arm/mach-omap2/board-omap3pandora.c
@@ -35,16 +35,48 @@
 #include <mach/hardware.h>
 #include <mach/mcspi.h>
 
+#include "mmc-twl4030.h"
+
 #define OMAP3_PANDORA_TS_GPIO		94
 
+static struct twl4030_hsmmc_info omap3pandora_mmc[] = {
+	{
+		.mmc		= 1,
+		.wires		= 4,
+		.gpio_cd	= -EINVAL,
+		.gpio_wp	= 126,
+		.ext_clock	= 0,
+	},
+	{
+		.mmc		= 2,
+		.wires		= 4,
+		.gpio_cd	= -EINVAL,
+		.gpio_wp	= 127,
+		.ext_clock	= 1,
+	},
+	{}	/* Terminator */
+};
+
 static struct omap_uart_config omap3pandora_uart_config __initdata = {
 	.enabled_uarts	= (1 << 2), /* UART3 */
 };
 
+static int omap3pandora_twl_gpio_setup(struct device *dev,
+		unsigned gpio, unsigned ngpio)
+{
+	/* gpio + {0,1} is "mmc{0,1}_cd" (input/IRQ) */
+	omap3pandora_mmc[0].gpio_cd = gpio + 0;
+	omap3pandora_mmc[1].gpio_cd = gpio + 1;
+	twl4030_mmc_init(omap3pandora_mmc);
+
+	return 0;
+}
+
 static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
 	.gpio_base	= OMAP_MAX_GPIO_LINES,
 	.irq_base	= TWL4030_GPIO_IRQ_BASE,
 	.irq_end	= TWL4030_GPIO_IRQ_END,
+	.setup		= omap3pandora_twl_gpio_setup,
 };
 
 static struct twl4030_usb_data omap3pandora_usb_data = {
diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index e09aa59a399c..82b3dc557c96 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -26,6 +26,7 @@
 #include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
+#include <linux/i2c/twl4030.h>
 
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nand.h>
@@ -44,6 +45,8 @@
 #include <mach/hardware.h>
 #include <mach/nand.h>
 
+#include "mmc-twl4030.h"
+
 #define NAND_BLOCK_SIZE SZ_128K
 #define GPMC_CS0_BASE  0x60
 #define GPMC_CS_SIZE   0x30
@@ -139,8 +142,31 @@ static struct omap_uart_config overo_uart_config __initdata = {
 	.enabled_uarts	= ((1 << 0) | (1 << 1) | (1 << 2)),
 };
 
+static struct twl4030_gpio_platform_data overo_gpio_data = {
+	.gpio_base	= OMAP_MAX_GPIO_LINES,
+	.irq_base	= TWL4030_GPIO_IRQ_BASE,
+	.irq_end	= TWL4030_GPIO_IRQ_END,
+};
+
+static struct twl4030_platform_data overo_twldata = {
+	.irq_base	= TWL4030_IRQ_BASE,
+	.irq_end	= TWL4030_IRQ_END,
+	.gpio		= &overo_gpio_data,
+};
+
+static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
+	{
+		I2C_BOARD_INFO("twl4030", 0x48),
+		.flags = I2C_CLIENT_WAKE,
+		.irq = INT_34XX_SYS_NIRQ,
+		.platform_data = &overo_twldata,
+	},
+};
+
 static int __init overo_i2c_init(void)
 {
+	omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
+			ARRAY_SIZE(overo_i2c_boardinfo));
 	/* i2c2 pins are used for gpio */
 	omap_register_i2c_bus(3, 400, NULL, 0);
 	return 0;
@@ -171,6 +197,22 @@ static struct platform_device *overo_devices[] __initdata = {
 	&overo_lcd_device,
 };
 
+static struct twl4030_hsmmc_info mmc[] __initdata = {
+	{
+		.mmc		= 1,
+		.wires		= 4,
+		.gpio_cd	= -EINVAL,
+		.gpio_wp	= -EINVAL,
+	},
+	{
+		.mmc		= 2,
+		.wires		= 4,
+		.gpio_cd	= -EINVAL,
+		.gpio_wp	= -EINVAL,
+	},
+	{}	/* Terminator */
+};
+
 static void __init overo_init(void)
 {
 	overo_i2c_init();
@@ -178,6 +220,7 @@ static void __init overo_init(void)
 	omap_board_config = overo_config;
 	omap_board_config_size = ARRAY_SIZE(overo_config);
 	omap_serial_init();
+	twl4030_mmc_init(mmc);
 	overo_flash_init();
 
 	if ((gpio_request(OVERO_GPIO_W2W_NRESET,
diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index 8ccdfcf2942c..6e03272b0521 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -19,6 +19,7 @@
 #include <asm/mach-types.h>
 #include <asm/mach/map.h>
 
+#include <mach/control.h>
 #include <mach/tc.h>
 #include <mach/board.h>
 #include <mach/mux.h>
@@ -311,7 +312,7 @@ static inline void omap2_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
 		omap_cfg_reg(F20_24XX_MMC_DAT0);
 		omap_cfg_reg(F19_24XX_MMC_DAT_DIR0);
 		omap_cfg_reg(G18_24XX_MMC_CMD_DIR);
-		if (mmc_controller->slots[0].wire4) {
+		if (mmc_controller->slots[0].wires == 4) {
 			omap_cfg_reg(H14_24XX_MMC_DAT1);
 			omap_cfg_reg(E19_24XX_MMC_DAT2);
 			omap_cfg_reg(D19_24XX_MMC_DAT3);
diff --git a/arch/arm/mach-omap2/mmc-twl4030.c b/arch/arm/mach-omap2/mmc-twl4030.c
new file mode 100644
index 000000000000..437f52073f6e
--- /dev/null
+++ b/arch/arm/mach-omap2/mmc-twl4030.c
@@ -0,0 +1,408 @@
+/*
+ * linux/arch/arm/mach-omap2/mmc-twl4030.c
+ *
+ * Copyright (C) 2007-2008 Texas Instruments
+ * Copyright (C) 2008 Nokia Corporation
+ * Author: Texas Instruments
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/i2c/twl4030.h>
+
+#include <mach/hardware.h>
+#include <mach/control.h>
+#include <mach/mmc.h>
+#include <mach/board.h>
+
+#include "mmc-twl4030.h"
+
+#if defined(CONFIG_TWL4030_CORE) && \
+	(defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE))
+
+#define LDO_CLR			0x00
+#define VSEL_S2_CLR		0x40
+
+#define VMMC1_DEV_GRP		0x27
+#define VMMC1_CLR		0x00
+#define VMMC1_315V		0x03
+#define VMMC1_300V		0x02
+#define VMMC1_285V		0x01
+#define VMMC1_185V		0x00
+#define VMMC1_DEDICATED		0x2A
+
+#define VMMC2_DEV_GRP		0x2B
+#define VMMC2_CLR		0x40
+#define VMMC2_315V		0x0c
+#define VMMC2_300V		0x0b
+#define VMMC2_285V		0x0a
+#define VMMC2_260V		0x08
+#define VMMC2_185V		0x06
+#define VMMC2_DEDICATED		0x2E
+
+#define VMMC_DEV_GRP_P1		0x20
+
+static u16 control_pbias_offset;
+static u16 control_devconf1_offset;
+
+#define HSMMC_NAME_LEN	9
+
+static struct twl_mmc_controller {
+	struct omap_mmc_platform_data	*mmc;
+	u8		twl_vmmc_dev_grp;
+	u8		twl_mmc_dedicated;
+	char		name[HSMMC_NAME_LEN];
+} hsmmc[] = {
+	{
+		.twl_vmmc_dev_grp		= VMMC1_DEV_GRP,
+		.twl_mmc_dedicated		= VMMC1_DEDICATED,
+	},
+	{
+		.twl_vmmc_dev_grp		= VMMC2_DEV_GRP,
+		.twl_mmc_dedicated		= VMMC2_DEDICATED,
+	},
+};
+
+static int twl_mmc_card_detect(int irq)
+{
+	unsigned i;
+
+	for (i = 0; i < ARRAY_SIZE(hsmmc); i++) {
+		struct omap_mmc_platform_data *mmc;
+
+		mmc = hsmmc[i].mmc;
+		if (!mmc)
+			continue;
+		if (irq != mmc->slots[0].card_detect_irq)
+			continue;
+
+		/* NOTE: assumes card detect signal is active-low */
+		return !gpio_get_value_cansleep(mmc->slots[0].switch_pin);
+	}
+	return -ENOSYS;
+}
+
+static int twl_mmc_get_ro(struct device *dev, int slot)
+{
+	struct omap_mmc_platform_data *mmc = dev->platform_data;
+
+	/* NOTE: assumes write protect signal is active-high */
+	return gpio_get_value_cansleep(mmc->slots[0].gpio_wp);
+}
+
+/*
+ * MMC Slot Initialization.
+ */
+static int twl_mmc_late_init(struct device *dev)
+{
+	struct omap_mmc_platform_data *mmc = dev->platform_data;
+	int ret = 0;
+	int i;
+
+	ret = gpio_request(mmc->slots[0].switch_pin, "mmc_cd");
+	if (ret)
+		goto done;
+	ret = gpio_direction_input(mmc->slots[0].switch_pin);
+	if (ret)
+		goto err;
+
+	for (i = 0; i < ARRAY_SIZE(hsmmc); i++) {
+		if (hsmmc[i].name == mmc->slots[0].name) {
+			hsmmc[i].mmc = mmc;
+			break;
+		}
+	}
+
+	return 0;
+
+err:
+	gpio_free(mmc->slots[0].switch_pin);
+done:
+	mmc->slots[0].card_detect_irq = 0;
+	mmc->slots[0].card_detect = NULL;
+
+	dev_err(dev, "err %d configuring card detect\n", ret);
+	return ret;
+}
+
+static void twl_mmc_cleanup(struct device *dev)
+{
+	struct omap_mmc_platform_data *mmc = dev->platform_data;
+
+	gpio_free(mmc->slots[0].switch_pin);
+}
+
+#ifdef CONFIG_PM
+
+static int twl_mmc_suspend(struct device *dev, int slot)
+{
+	struct omap_mmc_platform_data *mmc = dev->platform_data;
+
+	disable_irq(mmc->slots[0].card_detect_irq);
+	return 0;
+}
+
+static int twl_mmc_resume(struct device *dev, int slot)
+{
+	struct omap_mmc_platform_data *mmc = dev->platform_data;
+
+	enable_irq(mmc->slots[0].card_detect_irq);
+	return 0;
+}
+
+#else
+#define twl_mmc_suspend	NULL
+#define twl_mmc_resume	NULL
+#endif
+
+/*
+ * Sets the MMC voltage in twl4030
+ */
+static int twl_mmc_set_voltage(struct twl_mmc_controller *c, int vdd)
+{
+	int ret;
+	u8 vmmc, dev_grp_val;
+
+	switch (1 << vdd) {
+	case MMC_VDD_35_36:
+	case MMC_VDD_34_35:
+	case MMC_VDD_33_34:
+	case MMC_VDD_32_33:
+	case MMC_VDD_31_32:
+	case MMC_VDD_30_31:
+		if (c->twl_vmmc_dev_grp == VMMC1_DEV_GRP)
+			vmmc = VMMC1_315V;
+		else
+			vmmc = VMMC2_315V;
+		break;
+	case MMC_VDD_29_30:
+		if (c->twl_vmmc_dev_grp == VMMC1_DEV_GRP)
+			vmmc = VMMC1_315V;
+		else
+			vmmc = VMMC2_300V;
+		break;
+	case MMC_VDD_27_28:
+	case MMC_VDD_26_27:
+		if (c->twl_vmmc_dev_grp == VMMC1_DEV_GRP)
+			vmmc = VMMC1_285V;
+		else
+			vmmc = VMMC2_285V;
+		break;
+	case MMC_VDD_25_26:
+	case MMC_VDD_24_25:
+	case MMC_VDD_23_24:
+	case MMC_VDD_22_23:
+	case MMC_VDD_21_22:
+	case MMC_VDD_20_21:
+		if (c->twl_vmmc_dev_grp == VMMC1_DEV_GRP)
+			vmmc = VMMC1_285V;
+		else
+			vmmc = VMMC2_260V;
+		break;
+	case MMC_VDD_165_195:
+		if (c->twl_vmmc_dev_grp == VMMC1_DEV_GRP)
+			vmmc = VMMC1_185V;
+		else
+			vmmc = VMMC2_185V;
+		break;
+	default:
+		vmmc = 0;
+		break;
+	}
+
+	if (vmmc)
+		dev_grp_val = VMMC_DEV_GRP_P1;	/* Power up */
+	else
+		dev_grp_val = LDO_CLR;		/* Power down */
+
+	ret = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+					dev_grp_val, c->twl_vmmc_dev_grp);
+	if (ret)
+		return ret;
+
+	ret = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+					vmmc, c->twl_mmc_dedicated);
+
+	return ret;
+}
+
+static int twl_mmc1_set_power(struct device *dev, int slot, int power_on,
+				int vdd)
+{
+	u32 reg;
+	int ret = 0;
+	struct twl_mmc_controller *c = &hsmmc[0];
+	struct omap_mmc_platform_data *mmc = dev->platform_data;
+
+	if (power_on) {
+		if (cpu_is_omap2430()) {
+			reg = omap_ctrl_readl(OMAP243X_CONTROL_DEVCONF1);
+			if ((1 << vdd) >= MMC_VDD_30_31)
+				reg |= OMAP243X_MMC1_ACTIVE_OVERWRITE;
+			else
+				reg &= ~OMAP243X_MMC1_ACTIVE_OVERWRITE;
+			omap_ctrl_writel(reg, OMAP243X_CONTROL_DEVCONF1);
+		}
+
+		if (mmc->slots[0].internal_clock) {
+			reg = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+			reg |= OMAP2_MMCSDIO1ADPCLKISEL;
+			omap_ctrl_writel(reg, OMAP2_CONTROL_DEVCONF0);
+		}
+
+		reg = omap_ctrl_readl(control_pbias_offset);
+		reg |= OMAP2_PBIASSPEEDCTRL0;
+		reg &= ~OMAP2_PBIASLITEPWRDNZ0;
+		omap_ctrl_writel(reg, control_pbias_offset);
+
+		ret = twl_mmc_set_voltage(c, vdd);
+
+		/* 100ms delay required for PBIAS configuration */
+		msleep(100);
+		reg = omap_ctrl_readl(control_pbias_offset);
+		reg |= (OMAP2_PBIASLITEPWRDNZ0 | OMAP2_PBIASSPEEDCTRL0);
+		if ((1 << vdd) <= MMC_VDD_165_195)
+			reg &= ~OMAP2_PBIASLITEVMODE0;
+		else
+			reg |= OMAP2_PBIASLITEVMODE0;
+		omap_ctrl_writel(reg, control_pbias_offset);
+	} else {
+		reg = omap_ctrl_readl(control_pbias_offset);
+		reg &= ~OMAP2_PBIASLITEPWRDNZ0;
+		omap_ctrl_writel(reg, control_pbias_offset);
+
+		ret = twl_mmc_set_voltage(c, 0);
+
+		/* 100ms delay required for PBIAS configuration */
+		msleep(100);
+		reg = omap_ctrl_readl(control_pbias_offset);
+		reg |= (OMAP2_PBIASSPEEDCTRL0 | OMAP2_PBIASLITEPWRDNZ0 |
+			OMAP2_PBIASLITEVMODE0);
+		omap_ctrl_writel(reg, control_pbias_offset);
+	}
+
+	return ret;
+}
+
+static int twl_mmc2_set_power(struct device *dev, int slot, int power_on, int vdd)
+{
+	int ret;
+	struct twl_mmc_controller *c = &hsmmc[1];
+	struct omap_mmc_platform_data *mmc = dev->platform_data;
+
+	if (power_on) {
+		if (mmc->slots[0].internal_clock) {
+			u32 reg;
+
+			reg = omap_ctrl_readl(control_devconf1_offset);
+			reg |= OMAP2_MMCSDIO2ADPCLKISEL;
+			omap_ctrl_writel(reg, control_devconf1_offset);
+		}
+		ret = twl_mmc_set_voltage(c, vdd);
+	} else {
+		ret = twl_mmc_set_voltage(c, 0);
+	}
+
+	return ret;
+}
+
+static struct omap_mmc_platform_data *hsmmc_data[OMAP34XX_NR_MMC] __initdata;
+
+void __init twl4030_mmc_init(struct twl4030_hsmmc_info *controllers)
+{
+	struct twl4030_hsmmc_info *c;
+	int nr_hsmmc = ARRAY_SIZE(hsmmc_data);
+
+	if (cpu_is_omap2430()) {
+		control_pbias_offset = OMAP243X_CONTROL_PBIAS_LITE;
+		control_devconf1_offset = OMAP243X_CONTROL_DEVCONF1;
+		nr_hsmmc = 2;
+	} else {
+		control_pbias_offset = OMAP343X_CONTROL_PBIAS_LITE;
+		control_devconf1_offset = OMAP343X_CONTROL_DEVCONF1;
+	}
+
+	for (c = controllers; c->mmc; c++) {
+		struct twl_mmc_controller *twl = hsmmc + c->mmc - 1;
+		struct omap_mmc_platform_data *mmc = hsmmc_data[c->mmc - 1];
+
+		if (!c->mmc || c->mmc > nr_hsmmc) {
+			pr_debug("MMC%d: no such controller\n", c->mmc);
+			continue;
+		}
+		if (mmc) {
+			pr_debug("MMC%d: already configured\n", c->mmc);
+			continue;
+		}
+
+		mmc = kzalloc(sizeof(struct omap_mmc_platform_data), GFP_KERNEL);
+		if (!mmc) {
+			pr_err("Cannot allocate memory for mmc device!\n");
+			return;
+		}
+
+		sprintf(twl->name, "mmc%islot%i", c->mmc, 1);
+		mmc->slots[0].name = twl->name;
+		mmc->nr_slots = 1;
+		mmc->slots[0].ocr_mask = MMC_VDD_165_195 |
+					MMC_VDD_26_27 | MMC_VDD_27_28 |
+					MMC_VDD_29_30 |
+					MMC_VDD_30_31 | MMC_VDD_31_32;
+		mmc->slots[0].wires = c->wires;
+		mmc->slots[0].internal_clock = !c->ext_clock;
+		mmc->dma_mask = 0xffffffff;
+
+		/* note: twl4030 card detect GPIOs normally switch VMMCx ... */
+		if (gpio_is_valid(c->gpio_cd)) {
+			mmc->init = twl_mmc_late_init;
+			mmc->cleanup = twl_mmc_cleanup;
+			mmc->suspend = twl_mmc_suspend;
+			mmc->resume = twl_mmc_resume;
+
+			mmc->slots[0].switch_pin = c->gpio_cd;
+			mmc->slots[0].card_detect_irq = gpio_to_irq(c->gpio_cd);
+			mmc->slots[0].card_detect = twl_mmc_card_detect;
+		} else
+			mmc->slots[0].switch_pin = -EINVAL;
+
+		/* write protect normally uses an OMAP gpio */
+		if (gpio_is_valid(c->gpio_wp)) {
+			gpio_request(c->gpio_wp, "mmc_wp");
+			gpio_direction_input(c->gpio_wp);
+
+			mmc->slots[0].gpio_wp = c->gpio_wp;
+			mmc->slots[0].get_ro = twl_mmc_get_ro;
+		} else
+			mmc->slots[0].gpio_wp = -EINVAL;
+
+		/* NOTE:  we assume OMAP's MMC1 and MMC2 use
+		 * the TWL4030's VMMC1 and VMMC2, respectively;
+		 * and that OMAP's MMC3 isn't used.
+		 */
+
+		switch (c->mmc) {
+		case 1:
+			mmc->slots[0].set_power = twl_mmc1_set_power;
+			break;
+		case 2:
+			mmc->slots[0].set_power = twl_mmc2_set_power;
+			break;
+		default:
+			pr_err("MMC%d configuration not supported!\n", c->mmc);
+			continue;
+		}
+		hsmmc_data[c->mmc - 1] = mmc;
+	}
+
+	omap2_init_mmc(hsmmc_data, OMAP34XX_NR_MMC);
+}
+
+#endif
diff --git a/arch/arm/mach-omap2/mmc-twl4030.h b/arch/arm/mach-omap2/mmc-twl4030.h
new file mode 100644
index 000000000000..e1c8076400ca
--- /dev/null
+++ b/arch/arm/mach-omap2/mmc-twl4030.h
@@ -0,0 +1,29 @@
+/*
+ * MMC definitions for OMAP2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+struct twl4030_hsmmc_info {
+	u8	mmc;		/* controller 1/2/3 */
+	u8	wires;		/* 1/4/8 wires */
+	int	gpio_cd;	/* or -EINVAL */
+	int	gpio_wp;	/* or -EINVAL */
+	int	ext_clock:1;	/* use external pin for input clock */
+};
+
+#if	defined(CONFIG_TWL4030_CORE) && \
+	(defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
+	 defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE))
+
+void twl4030_mmc_init(struct twl4030_hsmmc_info *);
+
+#else
+
+static inline void twl4030_mmc_init(struct twl4030_hsmmc_info *info)
+{
+}
+
+#endif