[deliverable/linux.git] / arch / arm / mach-omap2 / board-n8x0.c

/*
 * linux/arch/arm/mach-omap2/board-n8x0.c
 *
 * Copyright (C) 2005-2009 Nokia Corporation
 * Author: Juha Yrjola <juha.yrjola@nokia.com>
 *
 * Modified from mach-omap2/board-generic.c
 *
 * 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/clk.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/stddef.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
#include <linux/usb/musb.h>
#include <linux/mmc/host.h>
#include <linux/platform_data/spi-omap2-mcspi.h>
#include <linux/platform_data/mmc-omap.h>
#include <linux/mfd/menelaus.h>
#include <sound/tlv320aic3x.h>

#include <asm/mach/arch.h>
#include <asm/mach-types.h>

#include "common.h"
#include "mmc.h"
#include "soc.h"
#include "common-board-devices.h"

#define TUSB6010_ASYNC_CS	1
#define TUSB6010_SYNC_CS	4
#define TUSB6010_GPIO_INT	58
#define TUSB6010_GPIO_ENABLE	0
#define TUSB6010_DMACHAN	0x3f

#define NOKIA_N810_WIMAX	(1 << 2)
#define NOKIA_N810		(1 << 1)
#define NOKIA_N800		(1 << 0)

static u32 board_caps;

#define board_is_n800()		(board_caps & NOKIA_N800)
#define board_is_n810()		(board_caps & NOKIA_N810)
#define board_is_n810_wimax()	(board_caps & NOKIA_N810_WIMAX)

static void board_check_revision(void)
{
	if (of_have_populated_dt()) {
		if (of_machine_is_compatible("nokia,n800"))
			board_caps = NOKIA_N800;
		else if (of_machine_is_compatible("nokia,n810"))
			board_caps = NOKIA_N810;
		else if (of_machine_is_compatible("nokia,n810-wimax"))
			board_caps = NOKIA_N810_WIMAX;
	}

	if (!board_caps)
		pr_err("Unknown board\n");
}

#if defined(CONFIG_USB_MUSB_TUSB6010) || defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
/*
 * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and
 * 1.5 V voltage regulators of PM companion chip. Companion chip will then
 * provide then PGOOD signal to TUSB6010 which will release it from reset.
 */
static int tusb_set_power(int state)
{
	int i, retval = 0;

	if (state) {
		gpio_set_value(TUSB6010_GPIO_ENABLE, 1);
		msleep(1);

		/* Wait until TUSB6010 pulls INT pin down */
		i = 100;
		while (i && gpio_get_value(TUSB6010_GPIO_INT)) {
			msleep(1);
			i--;
		}

		if (!i) {
			printk(KERN_ERR "tusb: powerup failed\n");
			retval = -ENODEV;
		}
	} else {
		gpio_set_value(TUSB6010_GPIO_ENABLE, 0);
		msleep(10);
	}

	return retval;
}

static struct musb_hdrc_config musb_config = {
	.multipoint	= 1,
	.dyn_fifo	= 1,
	.num_eps	= 16,
	.ram_bits	= 12,
};

static struct musb_hdrc_platform_data tusb_data = {
	.mode		= MUSB_OTG,
	.set_power	= tusb_set_power,
	.min_power	= 25,	/* x2 = 50 mA drawn from VBUS as peripheral */
	.power		= 100,	/* Max 100 mA VBUS for host mode */
	.config		= &musb_config,
};

static void __init n8x0_usb_init(void)
{
	int ret = 0;
	static char	announce[] __initdata = KERN_INFO "TUSB 6010\n";

	/* PM companion chip power control pin */
	ret = gpio_request_one(TUSB6010_GPIO_ENABLE, GPIOF_OUT_INIT_LOW,
			       "TUSB6010 enable");
	if (ret != 0) {
		printk(KERN_ERR "Could not get TUSB power GPIO%i\n",
		       TUSB6010_GPIO_ENABLE);
		return;
	}
	tusb_set_power(0);

	ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2,
					TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS,
					TUSB6010_GPIO_INT, TUSB6010_DMACHAN);
	if (ret != 0)
		goto err;

	printk(announce);

	return;

err:
	gpio_free(TUSB6010_GPIO_ENABLE);
}
#else

static void __init n8x0_usb_init(void) {}

#endif /*CONFIG_USB_MUSB_TUSB6010 */


static struct omap2_mcspi_device_config p54spi_mcspi_config = {
	.turbo_mode	= 0,
};

static struct spi_board_info n800_spi_board_info[] __initdata = {
	{
		.modalias	= "p54spi",
		.bus_num	= 2,
		.chip_select	= 0,
		.max_speed_hz   = 48000000,
		.controller_data = &p54spi_mcspi_config,
	},
};

#if defined(CONFIG_MENELAUS) &&						\
	(defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE))

/*
 * On both N800 and N810, only the first of the two MMC controllers is in use.
 * The two MMC slots are multiplexed via Menelaus companion chip over I2C.
 * On N800, both slots are powered via Menelaus. On N810, only one of the
 * slots is powered via Menelaus. The N810 EMMC is powered via GPIO.
 *
 * VMMC				slot 1 on both N800 and N810
 * VDCDC3_APE and VMCS2_APE	slot 2 on N800
 * GPIO23 and GPIO9		slot 2 EMMC on N810
 *
 */
#define N8X0_SLOT_SWITCH_GPIO	96
#define N810_EMMC_VSD_GPIO	23
#define N810_EMMC_VIO_GPIO	9

static int slot1_cover_open;
static int slot2_cover_open;
static struct device *mmc_device;

static int n8x0_mmc_switch_slot(struct device *dev, int slot)
{
#ifdef CONFIG_MMC_DEBUG
	dev_dbg(dev, "Choose slot %d\n", slot + 1);
#endif
	gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot);
	return 0;
}

static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
					int power_on, int vdd)
{
	int mV;

#ifdef CONFIG_MMC_DEBUG
	dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
		power_on ? "on" : "off", vdd);
#endif
	if (slot == 0) {
		if (!power_on)
			return menelaus_set_vmmc(0);
		switch (1 << vdd) {
		case MMC_VDD_33_34:
		case MMC_VDD_32_33:
		case MMC_VDD_31_32:
			mV = 3100;
			break;
		case MMC_VDD_30_31:
			mV = 3000;
			break;
		case MMC_VDD_28_29:
			mV = 2800;
			break;
		case MMC_VDD_165_195:
			mV = 1850;
			break;
		default:
			BUG();
		}
		return menelaus_set_vmmc(mV);
	} else {
		if (!power_on)
			return menelaus_set_vdcdc(3, 0);
		switch (1 << vdd) {
		case MMC_VDD_33_34:
		case MMC_VDD_32_33:
			mV = 3300;
			break;
		case MMC_VDD_30_31:
		case MMC_VDD_29_30:
			mV = 3000;
			break;
		case MMC_VDD_28_29:
		case MMC_VDD_27_28:
			mV = 2800;
			break;
		case MMC_VDD_24_25:
		case MMC_VDD_23_24:
			mV = 2400;
			break;
		case MMC_VDD_22_23:
		case MMC_VDD_21_22:
			mV = 2200;
			break;
		case MMC_VDD_20_21:
			mV = 2000;
			break;
		case MMC_VDD_165_195:
			mV = 1800;
			break;
		default:
			BUG();
		}
		return menelaus_set_vdcdc(3, mV);
	}
	return 0;
}

static void n810_set_power_emmc(struct device *dev,
					 int power_on)
{
	dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off");

	if (power_on) {
		gpio_set_value(N810_EMMC_VSD_GPIO, 1);
		msleep(1);
		gpio_set_value(N810_EMMC_VIO_GPIO, 1);
		msleep(1);
	} else {
		gpio_set_value(N810_EMMC_VIO_GPIO, 0);
		msleep(50);
		gpio_set_value(N810_EMMC_VSD_GPIO, 0);
		msleep(50);
	}
}

static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
			      int vdd)
{
	if (board_is_n800() || slot == 0)
		return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);

	n810_set_power_emmc(dev, power_on);

	return 0;
}

static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
{
	int r;

	dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
		bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
	BUG_ON(slot != 0 && slot != 1);
	slot++;
	switch (bus_mode) {
	case MMC_BUSMODE_OPENDRAIN:
		r = menelaus_set_mmc_opendrain(slot, 1);
		break;
	case MMC_BUSMODE_PUSHPULL:
		r = menelaus_set_mmc_opendrain(slot, 0);
		break;
	default:
		BUG();
	}
	if (r != 0 && printk_ratelimit())
		dev_err(dev, "MMC: unable to set bus mode for slot %d\n",
			slot);
	return r;
}

static int n8x0_mmc_get_cover_state(struct device *dev, int slot)
{
	slot++;
	BUG_ON(slot != 1 && slot != 2);
	if (slot == 1)
		return slot1_cover_open;
	else
		return slot2_cover_open;
}

static void n8x0_mmc_callback(void *data, u8 card_mask)
{
	int bit, *openp, index;

	if (board_is_n800()) {
		bit = 1 << 1;
		openp = &slot2_cover_open;
		index = 1;
	} else {
		bit = 1;
		openp = &slot1_cover_open;
		index = 0;
	}

	if (card_mask & bit)
		*openp = 1;
	else
		*openp = 0;

#ifdef CONFIG_MMC_OMAP
	omap_mmc_notify_cover_event(mmc_device, index, *openp);
#else
	pr_warn("MMC: notify cover event not available\n");
#endif
}

static int n8x0_mmc_late_init(struct device *dev)
{
	int r, bit, *openp;
	int vs2sel;

	mmc_device = dev;

	r = menelaus_set_slot_sel(1);
	if (r < 0)
		return r;

	if (board_is_n800())
		vs2sel = 0;
	else
		vs2sel = 2;

	r = menelaus_set_mmc_slot(2, 0, vs2sel, 1);
	if (r < 0)
		return r;

	n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */
	n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16);

	r = menelaus_set_mmc_slot(1, 1, 0, 1);
	if (r < 0)
		return r;
	r = menelaus_set_mmc_slot(2, 1, vs2sel, 1);
	if (r < 0)
		return r;

	r = menelaus_get_slot_pin_states();
	if (r < 0)
		return r;

	if (board_is_n800()) {
		bit = 1 << 1;
		openp = &slot2_cover_open;
	} else {
		bit = 1;
		openp = &slot1_cover_open;
		slot2_cover_open = 0;
	}

	/* All slot pin bits seem to be inversed until first switch change */
	if (r == 0xf || r == (0xf & ~bit))
		r = ~r;

	if (r & bit)
		*openp = 1;
	else
		*openp = 0;

	r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL);

	return r;
}

static void n8x0_mmc_shutdown(struct device *dev)
{
	int vs2sel;

	if (board_is_n800())
		vs2sel = 0;
	else
		vs2sel = 2;

	menelaus_set_mmc_slot(1, 0, 0, 0);
	menelaus_set_mmc_slot(2, 0, vs2sel, 0);
}

static void n8x0_mmc_cleanup(struct device *dev)
{
	menelaus_unregister_mmc_callback();

	gpio_free(N8X0_SLOT_SWITCH_GPIO);

	if (board_is_n810()) {
		gpio_free(N810_EMMC_VSD_GPIO);
		gpio_free(N810_EMMC_VIO_GPIO);
	}
}

/*
 * MMC controller1 has two slots that are multiplexed via I2C.
 * MMC controller2 is not in use.
 */
static struct omap_mmc_platform_data mmc1_data = {
	.nr_slots			= 0,
	.switch_slot			= n8x0_mmc_switch_slot,
	.init				= n8x0_mmc_late_init,
	.cleanup			= n8x0_mmc_cleanup,
	.shutdown			= n8x0_mmc_shutdown,
	.max_freq			= 24000000,
	.slots[0] = {
		.wires			= 4,
		.set_power		= n8x0_mmc_set_power,
		.set_bus_mode		= n8x0_mmc_set_bus_mode,
		.get_cover_state	= n8x0_mmc_get_cover_state,
		.ocr_mask		= MMC_VDD_165_195 | MMC_VDD_30_31 |
						MMC_VDD_32_33   | MMC_VDD_33_34,
		.name			= "internal",
	},
	.slots[1] = {
		.set_power		= n8x0_mmc_set_power,
		.set_bus_mode		= n8x0_mmc_set_bus_mode,
		.get_cover_state	= n8x0_mmc_get_cover_state,
		.ocr_mask		= MMC_VDD_165_195 | MMC_VDD_20_21 |
						MMC_VDD_21_22 | MMC_VDD_22_23 |
						MMC_VDD_23_24 | MMC_VDD_24_25 |
						MMC_VDD_27_28 | MMC_VDD_28_29 |
						MMC_VDD_29_30 | MMC_VDD_30_31 |
						MMC_VDD_32_33 | MMC_VDD_33_34,
		.name			= "external",
	},
};

static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];

static struct gpio n810_emmc_gpios[] __initdata = {
	{ N810_EMMC_VSD_GPIO, GPIOF_OUT_INIT_LOW,  "MMC slot 2 Vddf" },
	{ N810_EMMC_VIO_GPIO, GPIOF_OUT_INIT_LOW,  "MMC slot 2 Vdd"  },
};

static void __init n8x0_mmc_init(void)
{
	int err;

	if (board_is_n810()) {
		mmc1_data.slots[0].name = "external";

		/*
		 * Some Samsung Movinand chips do not like open-ended
		 * multi-block reads and fall to braind-dead state
		 * while doing so. Reducing the number of blocks in
		 * the transfer or delays in clock disable do not help
		 */
		mmc1_data.slots[1].name = "internal";
		mmc1_data.slots[1].ban_openended = 1;
	}

	err = gpio_request_one(N8X0_SLOT_SWITCH_GPIO, GPIOF_OUT_INIT_LOW,
			       "MMC slot switch");
	if (err)
		return;

	if (board_is_n810()) {
		err = gpio_request_array(n810_emmc_gpios,
					 ARRAY_SIZE(n810_emmc_gpios));
		if (err) {
			gpio_free(N8X0_SLOT_SWITCH_GPIO);
			return;
		}
	}

	mmc1_data.nr_slots = 2;
	mmc_data[0] = &mmc1_data;
}
#else
static struct omap_mmc_platform_data mmc1_data;
void __init n8x0_mmc_init(void)
{
}
#endif	/* CONFIG_MMC_OMAP */

#ifdef CONFIG_MENELAUS

static int n8x0_auto_sleep_regulators(void)
{
	u32 val;
	int ret;

	val = EN_VPLL_SLEEP | EN_VMMC_SLEEP    \
		| EN_VAUX_SLEEP | EN_VIO_SLEEP \
		| EN_VMEM_SLEEP | EN_DC3_SLEEP \
		| EN_VC_SLEEP | EN_DC2_SLEEP;

	ret = menelaus_set_regulator_sleep(1, val);
	if (ret < 0) {
		pr_err("Could not set regulators to sleep on menelaus: %u\n",
		       ret);
		return ret;
	}
	return 0;
}

static int n8x0_auto_voltage_scale(void)
{
	int ret;

	ret = menelaus_set_vcore_hw(1400, 1050);
	if (ret < 0) {
		pr_err("Could not set VCORE voltage on menelaus: %u\n", ret);
		return ret;
	}
	return 0;
}

static int n8x0_menelaus_late_init(struct device *dev)
{
	int ret;

	ret = n8x0_auto_voltage_scale();
	if (ret < 0)
		return ret;
	ret = n8x0_auto_sleep_regulators();
	if (ret < 0)
		return ret;
	return 0;
}

#else
static int n8x0_menelaus_late_init(struct device *dev)
{
	return 0;
}
#endif

struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
	.late_init = n8x0_menelaus_late_init,
};

struct aic3x_pdata n810_aic33_data __initdata = {
	.gpio_reset = 118,
};

static int __init n8x0_late_initcall(void)
{
	if (!board_caps)
		return -ENODEV;

	n8x0_mmc_init();
	n8x0_usb_init();

	return 0;
}
omap_late_initcall(n8x0_late_initcall);

/*
 * Legacy init pdata init for n8x0. Note that we want to follow the
 * I2C bus numbering starting at 0 for device tree like other omaps.
 */
void * __init n8x0_legacy_init(void)
{
	board_check_revision();
	spi_register_board_info(n800_spi_board_info,
				ARRAY_SIZE(n800_spi_board_info));
	return &mmc1_data;
}
Commit	Line	Data
63138812 KV	1	/*
	2	* linux/arch/arm/mach-omap2/board-n8x0.c
	3	*
	4	* Copyright (C) 2005-2009 Nokia Corporation
	5	* Author: Juha Yrjola <juha.yrjola@nokia.com>
	6	*
	7	* Modified from mach-omap2/board-generic.c
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	12	*/
	13
	14	#include <linux/clk.h>
	15	#include <linux/delay.h>
	16	#include <linux/gpio.h>
	17	#include <linux/init.h>
	18	#include <linux/io.h>
0857ba3c	19	#include <linux/irq.h>
63138812	20	#include <linux/stddef.h>
9418c65f	21	#include <linux/i2c.h>
63138812 KV	22	#include <linux/spi/spi.h>
63138812 KV	23	#include <linux/usb/musb.h>
826c71a0	24	#include <linux/mmc/host.h>
2203747c	25	#include <linux/platform_data/spi-omap2-mcspi.h>
826c71a0	26	#include <linux/platform_data/mmc-omap.h>
7bd3b618	27	#include <linux/mfd/menelaus.h>
366498d4	28	#include <sound/tlv320aic3x.h>
63138812 KV	29
	30	#include <asm/mach/arch.h>
	31	#include <asm/mach-types.h>
	32
4e65331c	33	#include "common.h"
68f39e74	34	#include "mmc.h"
810ac2a1	35	#include "soc.h"
e92ce89c	36	#include "common-board-devices.h"
bd8f0fc9	37
97b9ad16 FA	38	#define TUSB6010_ASYNC_CS 1
	39	#define TUSB6010_SYNC_CS 4
	40	#define TUSB6010_GPIO_INT 58
	41	#define TUSB6010_GPIO_ENABLE 0
	42	#define TUSB6010_DMACHAN 0x3f
	43
c8f27e97 TL	44	#define NOKIA_N810_WIMAX (1 << 2)
	45	#define NOKIA_N810 (1 << 1)
	46	#define NOKIA_N800 (1 << 0)
	47
	48	static u32 board_caps;
	49
	50	#define board_is_n800() (board_caps & NOKIA_N800)
	51	#define board_is_n810() (board_caps & NOKIA_N810)
	52	#define board_is_n810_wimax() (board_caps & NOKIA_N810_WIMAX)
	53
	54	static void board_check_revision(void)
	55	{
	56	if (of_have_populated_dt()) {
	57	if (of_machine_is_compatible("nokia,n800"))
	58	board_caps = NOKIA_N800;
	59	else if (of_machine_is_compatible("nokia,n810"))
	60	board_caps = NOKIA_N810;
	61	else if (of_machine_is_compatible("nokia,n810-wimax"))
	62	board_caps = NOKIA_N810_WIMAX;
c8f27e97 TL	63	}
	64
	65	if (!board_caps)
	66	pr_err("Unknown board\n");
	67	}
	68
9a35f876	69	#if defined(CONFIG_USB_MUSB_TUSB6010) \|\| defined(CONFIG_USB_MUSB_TUSB6010_MODULE)
97b9ad16 FA	70	/*
	71	* Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and
	72	* 1.5 V voltage regulators of PM companion chip. Companion chip will then
	73	* provide then PGOOD signal to TUSB6010 which will release it from reset.
	74	*/
	75	static int tusb_set_power(int state)
	76	{
	77	int i, retval = 0;
	78
	79	if (state) {
	80	gpio_set_value(TUSB6010_GPIO_ENABLE, 1);
	81	msleep(1);
	82
	83	/* Wait until TUSB6010 pulls INT pin down */
	84	i = 100;
	85	while (i && gpio_get_value(TUSB6010_GPIO_INT)) {
	86	msleep(1);
	87	i--;
	88	}
	89
	90	if (!i) {
	91	printk(KERN_ERR "tusb: powerup failed\n");
	92	retval = -ENODEV;
	93	}
	94	} else {
	95	gpio_set_value(TUSB6010_GPIO_ENABLE, 0);
	96	msleep(10);
	97	}
	98
	99	return retval;
	100	}
	101
	102	static struct musb_hdrc_config musb_config = {
	103	.multipoint = 1,
	104	.dyn_fifo = 1,
	105	.num_eps = 16,
	106	.ram_bits = 12,
	107	};
	108
	109	static struct musb_hdrc_platform_data tusb_data = {
97b9ad16	110	.mode = MUSB_OTG,
97b9ad16 FA	111	.set_power = tusb_set_power,
	112	.min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */
	113	.power = 100, /* Max 100 mA VBUS for host mode */
	114	.config = &musb_config,
	115	};
	116
	117	static void __init n8x0_usb_init(void)
	118	{
	119	int ret = 0;
	120	static char announce[] __initdata = KERN_INFO "TUSB 6010\n";
	121
	122	/* PM companion chip power control pin */
bc593f5d IG	123	ret = gpio_request_one(TUSB6010_GPIO_ENABLE, GPIOF_OUT_INIT_LOW,
bc593f5d IG	124	"TUSB6010 enable");
97b9ad16 FA	125	if (ret != 0) {
	126	printk(KERN_ERR "Could not get TUSB power GPIO%i\n",
	127	TUSB6010_GPIO_ENABLE);
	128	return;
	129	}
97b9ad16 FA	130	tusb_set_power(0);
	131
	132	ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2,
	133	TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS,
	134	TUSB6010_GPIO_INT, TUSB6010_DMACHAN);
	135	if (ret != 0)
	136	goto err;
	137
	138	printk(announce);
	139
	140	return;
	141
	142	err:
	143	gpio_free(TUSB6010_GPIO_ENABLE);
	144	}
	145	#else
	146
	147	static void __init n8x0_usb_init(void) {}
	148
7c925546	149	#endif /CONFIG_USB_MUSB_TUSB6010 /
97b9ad16 FA	150
97b9ad16 FA	151
63138812 KV	152	static struct omap2_mcspi_device_config p54spi_mcspi_config = {
63138812 KV	153	.turbo_mode = 0,
63138812 KV	154	};
	155
	156	static struct spi_board_info n800_spi_board_info[] __initdata = {
	157	{
	158	.modalias = "p54spi",
	159	.bus_num = 2,
	160	.chip_select = 0,
	161	.max_speed_hz = 48000000,
	162	.controller_data = &p54spi_mcspi_config,
	163	},
	164	};
	165
9418c65f TL	166	#if defined(CONFIG_MENELAUS) && \
	167	(defined(CONFIG_MMC_OMAP) \|\| defined(CONFIG_MMC_OMAP_MODULE))
	168
	169	/*
	170	* On both N800 and N810, only the first of the two MMC controllers is in use.
	171	* The two MMC slots are multiplexed via Menelaus companion chip over I2C.
	172	* On N800, both slots are powered via Menelaus. On N810, only one of the
	173	* slots is powered via Menelaus. The N810 EMMC is powered via GPIO.
	174	*
	175	* VMMC slot 1 on both N800 and N810
	176	* VDCDC3_APE and VMCS2_APE slot 2 on N800
	177	* GPIO23 and GPIO9 slot 2 EMMC on N810
	178	*
	179	*/
	180	#define N8X0_SLOT_SWITCH_GPIO 96
	181	#define N810_EMMC_VSD_GPIO 23
1dea5c6b	182	#define N810_EMMC_VIO_GPIO 9
9418c65f	183
49b87c6d TL	184	static int slot1_cover_open;
	185	static int slot2_cover_open;
	186	static struct device *mmc_device;
	187
9418c65f TL	188	static int n8x0_mmc_switch_slot(struct device *dev, int slot)
	189	{
	190	#ifdef CONFIG_MMC_DEBUG
	191	dev_dbg(dev, "Choose slot %d\n", slot + 1);
	192	#endif
	193	gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot);
	194	return 0;
	195	}
	196
	197	static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
	198	int power_on, int vdd)
	199	{
	200	int mV;
	201
	202	#ifdef CONFIG_MMC_DEBUG
	203	dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
	204	power_on ? "on" : "off", vdd);
	205	#endif
	206	if (slot == 0) {
	207	if (!power_on)
	208	return menelaus_set_vmmc(0);
	209	switch (1 << vdd) {
	210	case MMC_VDD_33_34:
	211	case MMC_VDD_32_33:
	212	case MMC_VDD_31_32:
	213	mV = 3100;
	214	break;
	215	case MMC_VDD_30_31:
	216	mV = 3000;
	217	break;
	218	case MMC_VDD_28_29:
	219	mV = 2800;
	220	break;
	221	case MMC_VDD_165_195:
	222	mV = 1850;
	223	break;
	224	default:
	225	BUG();
	226	}
	227	return menelaus_set_vmmc(mV);
	228	} else {
	229	if (!power_on)
	230	return menelaus_set_vdcdc(3, 0);
	231	switch (1 << vdd) {
	232	case MMC_VDD_33_34:
	233	case MMC_VDD_32_33:
	234	mV = 3300;
	235	break;
	236	case MMC_VDD_30_31:
	237	case MMC_VDD_29_30:
	238	mV = 3000;
	239	break;
	240	case MMC_VDD_28_29:
	241	case MMC_VDD_27_28:
	242	mV = 2800;
	243	break;
	244	case MMC_VDD_24_25:
	245	case MMC_VDD_23_24:
	246	mV = 2400;
	247	break;
	248	case MMC_VDD_22_23:
	249	case MMC_VDD_21_22:
	250	mV = 2200;
	251	break;
252	case MMC_VDD_20_21:
253	mV = 2000;
254	break;
255	case MMC_VDD_165_195:
256	mV = 1800;
257	break;
258	default:
259	BUG();
260	}
261	return menelaus_set_vdcdc(3, mV);
262	}
263	return 0;
264	}
265
266	static void n810_set_power_emmc(struct device *dev,
267	int power_on)
268	{
269	dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off");
270
271	if (power_on) {
272	gpio_set_value(N810_EMMC_VSD_GPIO, 1);
273	msleep(1);
1dea5c6b	274	gpio_set_value(N810_EMMC_VIO_GPIO, 1);
9418c65f TL	275	msleep(1);
9418c65f TL	276	} else {
1dea5c6b	277	gpio_set_value(N810_EMMC_VIO_GPIO, 0);
9418c65f TL	278	msleep(50);
	279	gpio_set_value(N810_EMMC_VSD_GPIO, 0);
	280	msleep(50);
	281	}
	282	}
	283
	284	static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
	285	int vdd)
	286	{
c8f27e97	287	if (board_is_n800() \|\| slot == 0)
9418c65f TL	288	return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);
	289
	290	n810_set_power_emmc(dev, power_on);
	291
	292	return 0;
	293	}
	294
	295	static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
	296	{
	297	int r;
	298
	299	dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
	300	bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
	301	BUG_ON(slot != 0 && slot != 1);
	302	slot++;
	303	switch (bus_mode) {
	304	case MMC_BUSMODE_OPENDRAIN:
	305	r = menelaus_set_mmc_opendrain(slot, 1);
	306	break;
	307	case MMC_BUSMODE_PUSHPULL:
	308	r = menelaus_set_mmc_opendrain(slot, 0);
	309	break;
	310	default:
	311	BUG();
	312	}
	313	if (r != 0 && printk_ratelimit())
	314	dev_err(dev, "MMC: unable to set bus mode for slot %d\n",
	315	slot);
	316	return r;
	317	}
	318
	319	static int n8x0_mmc_get_cover_state(struct device *dev, int slot)
	320	{
	321	slot++;
	322	BUG_ON(slot != 1 && slot != 2);
	323	if (slot == 1)
	324	return slot1_cover_open;
	325	else
	326	return slot2_cover_open;
	327	}
	328
	329	static void n8x0_mmc_callback(void *data, u8 card_mask)
	330	{
	331	int bit, *openp, index;
	332
c8f27e97	333	if (board_is_n800()) {
9418c65f TL	334	bit = 1 << 1;
	335	openp = &slot2_cover_open;
	336	index = 1;
	337	} else {
	338	bit = 1;
	339	openp = &slot1_cover_open;
	340	index = 0;
	341	}
	342
	343	if (card_mask & bit)
	344	*openp = 1;
	345	else
	346	*openp = 0;
	347
d5171102	348	#ifdef CONFIG_MMC_OMAP
9418c65f	349	omap_mmc_notify_cover_event(mmc_device, index, *openp);
d5171102 TL	350	#else
	351	pr_warn("MMC: notify cover event not available\n");
	352	#endif
9418c65f TL	353	}
9418c65f TL	354
9418c65f TL	355	static int n8x0_mmc_late_init(struct device *dev)
	356	{
	357	int r, bit, *openp;
	358	int vs2sel;
	359
	360	mmc_device = dev;
	361
	362	r = menelaus_set_slot_sel(1);
	363	if (r < 0)
	364	return r;
	365
c8f27e97	366	if (board_is_n800())
9418c65f TL	367	vs2sel = 0;
	368	else
	369	vs2sel = 2;
	370
	371	r = menelaus_set_mmc_slot(2, 0, vs2sel, 1);
	372	if (r < 0)
	373	return r;
	374
	375	n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */
	376	n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16);
	377
	378	r = menelaus_set_mmc_slot(1, 1, 0, 1);
	379	if (r < 0)
	380	return r;
	381	r = menelaus_set_mmc_slot(2, 1, vs2sel, 1);
	382	if (r < 0)
	383	return r;
	384
	385	r = menelaus_get_slot_pin_states();
	386	if (r < 0)
	387	return r;
	388
c8f27e97	389	if (board_is_n800()) {
9418c65f TL	390	bit = 1 << 1;
	391	openp = &slot2_cover_open;
	392	} else {
	393	bit = 1;
	394	openp = &slot1_cover_open;
	395	slot2_cover_open = 0;
	396	}
	397
	398	/* All slot pin bits seem to be inversed until first switch change */
	399	if (r == 0xf \|\| r == (0xf & ~bit))
	400	r = ~r;
	401
	402	if (r & bit)
	403	*openp = 1;
	404	else
	405	*openp = 0;
	406
	407	r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL);
	408
	409	return r;
	410	}
	411
	412	static void n8x0_mmc_shutdown(struct device *dev)
	413	{
	414	int vs2sel;
	415
c8f27e97	416	if (board_is_n800())
9418c65f TL	417	vs2sel = 0;
	418	else
	419	vs2sel = 2;
	420
	421	menelaus_set_mmc_slot(1, 0, 0, 0);
	422	menelaus_set_mmc_slot(2, 0, vs2sel, 0);
	423	}
	424
	425	static void n8x0_mmc_cleanup(struct device *dev)
	426	{
	427	menelaus_unregister_mmc_callback();
	428
	429	gpio_free(N8X0_SLOT_SWITCH_GPIO);
	430
c8f27e97	431	if (board_is_n810()) {
9418c65f	432	gpio_free(N810_EMMC_VSD_GPIO);
1dea5c6b	433	gpio_free(N810_EMMC_VIO_GPIO);
9418c65f TL	434	}
	435	}
	436
	437	/*
	438	* MMC controller1 has two slots that are multiplexed via I2C.
	439	* MMC controller2 is not in use.
	440	*/
	441	static struct omap_mmc_platform_data mmc1_data = {
fa590c92	442	.nr_slots = 0,
9418c65f TL	443	.switch_slot = n8x0_mmc_switch_slot,
	444	.init = n8x0_mmc_late_init,
	445	.cleanup = n8x0_mmc_cleanup,
	446	.shutdown = n8x0_mmc_shutdown,
	447	.max_freq = 24000000,
9418c65f TL	448	.slots[0] = {
	449	.wires = 4,
	450	.set_power = n8x0_mmc_set_power,
	451	.set_bus_mode = n8x0_mmc_set_bus_mode,
	452	.get_cover_state = n8x0_mmc_get_cover_state,
	453	.ocr_mask = MMC_VDD_165_195 \| MMC_VDD_30_31 \|
	454	MMC_VDD_32_33 \| MMC_VDD_33_34,
	455	.name = "internal",
	456	},
	457	.slots[1] = {
	458	.set_power = n8x0_mmc_set_power,
	459	.set_bus_mode = n8x0_mmc_set_bus_mode,
	460	.get_cover_state = n8x0_mmc_get_cover_state,
	461	.ocr_mask = MMC_VDD_165_195 \| MMC_VDD_20_21 \|
	462	MMC_VDD_21_22 \| MMC_VDD_22_23 \|
	463	MMC_VDD_23_24 \| MMC_VDD_24_25 \|
	464	MMC_VDD_27_28 \| MMC_VDD_28_29 \|
	465	MMC_VDD_29_30 \| MMC_VDD_30_31 \|
	466	MMC_VDD_32_33 \| MMC_VDD_33_34,
	467	.name = "external",
	468	},
	469	};
	470
	471	static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
	472
bc593f5d IG	473	static struct gpio n810_emmc_gpios[] __initdata = {
	474	{ N810_EMMC_VSD_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vddf" },
	475	{ N810_EMMC_VIO_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vdd" },
	476	};
9418c65f	477
bc593f5d	478	static void __init n8x0_mmc_init(void)
9418c65f TL	479	{
	480	int err;
	481
c8f27e97	482	if (board_is_n810()) {
9418c65f TL	483	mmc1_data.slots[0].name = "external";
	484
	485	/*
	486	* Some Samsung Movinand chips do not like open-ended
	487	* multi-block reads and fall to braind-dead state
	488	* while doing so. Reducing the number of blocks in
	489	* the transfer or delays in clock disable do not help
	490	*/
	491	mmc1_data.slots[1].name = "internal";
	492	mmc1_data.slots[1].ban_openended = 1;
	493	}
	494
bc593f5d IG	495	err = gpio_request_one(N8X0_SLOT_SWITCH_GPIO, GPIOF_OUT_INIT_LOW,
bc593f5d IG	496	"MMC slot switch");
9418c65f	497	if (err)
1dea5c6b	498	return;
9418c65f	499
c8f27e97	500	if (board_is_n810()) {
bc593f5d IG	501	err = gpio_request_array(n810_emmc_gpios,
bc593f5d IG	502	ARRAY_SIZE(n810_emmc_gpios));
9418c65f TL	503	if (err) {
9418c65f TL	504	gpio_free(N8X0_SLOT_SWITCH_GPIO);
1dea5c6b	505	return;
9418c65f	506	}
9418c65f TL	507	}
9418c65f TL	508
fa590c92	509	mmc1_data.nr_slots = 2;
9418c65f	510	mmc_data[0] = &mmc1_data;
9418c65f TL	511	}
9418c65f TL	512	#else
fa590c92	513	static struct omap_mmc_platform_data mmc1_data;
9418c65f TL	514	void __init n8x0_mmc_init(void)
	515	{
	516	}
9418c65f TL	517	#endif /* CONFIG_MMC_OMAP */
	518
	519	#ifdef CONFIG_MENELAUS
	520
	521	static int n8x0_auto_sleep_regulators(void)
	522	{
	523	u32 val;
	524	int ret;
	525
	526	val = EN_VPLL_SLEEP \| EN_VMMC_SLEEP \
	527	\| EN_VAUX_SLEEP \| EN_VIO_SLEEP \
	528	\| EN_VMEM_SLEEP \| EN_DC3_SLEEP \
	529	\| EN_VC_SLEEP \| EN_DC2_SLEEP;
	530
	531	ret = menelaus_set_regulator_sleep(1, val);
	532	if (ret < 0) {
7852ec05 PW	533	pr_err("Could not set regulators to sleep on menelaus: %u\n",
7852ec05 PW	534	ret);
9418c65f TL	535	return ret;
	536	}
	537	return 0;
	538	}
	539
	540	static int n8x0_auto_voltage_scale(void)
	541	{
	542	int ret;
	543
	544	ret = menelaus_set_vcore_hw(1400, 1050);
	545	if (ret < 0) {
7852ec05	546	pr_err("Could not set VCORE voltage on menelaus: %u\n", ret);
9418c65f TL	547	return ret;
	548	}
	549	return 0;
	550	}
	551
	552	static int n8x0_menelaus_late_init(struct device *dev)
	553	{
	554	int ret;
	555
	556	ret = n8x0_auto_voltage_scale();
	557	if (ret < 0)
	558	return ret;
	559	ret = n8x0_auto_sleep_regulators();
	560	if (ret < 0)
	561	return ret;
	562	return 0;
	563	}
	564
a7f97d25 JN	565	#else
	566	static int n8x0_menelaus_late_init(struct device *dev)
	567	{
	568	return 0;
	569	}
	570	#endif
	571
e92ce89c	572	struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
a7f97d25 JN	573	.late_init = n8x0_menelaus_late_init,
	574	};
	575
e92ce89c	576	struct aic3x_pdata n810_aic33_data __initdata = {
366498d4	577	.gpio_reset = 118,
9418c65f TL	578	};
9418c65f TL	579
810ac2a1 TL	580	static int __init n8x0_late_initcall(void)
	581	{
	582	if (!board_caps)
	583	return -ENODEV;
	584
810ac2a1 TL	585	n8x0_mmc_init();
810ac2a1 TL	586	n8x0_usb_init();
810ac2a1 TL	587
	588	return 0;
	589	}
	590	omap_late_initcall(n8x0_late_initcall);
	591
fa590c92 TL	592	/*
	593	* Legacy init pdata init for n8x0. Note that we want to follow the
	594	* I2C bus numbering starting at 0 for device tree like other omaps.
	595	*/
	596	void * __init n8x0_legacy_init(void)
	597	{
	598	board_check_revision();
	599	spi_register_board_info(n800_spi_board_info,
	600	ARRAY_SIZE(n800_spi_board_info));
fa590c92 TL	601	return &mmc1_data;
fa590c92 TL	602	}