[mirror_ubuntu-bionic-kernel.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_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 IS_ENABLED(CONFIG_USB_MUSB_TUSB6010)
/*
 * 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 const char announce[] __initconst = 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) && IS_ENABLED(CONFIG_MMC_OMAP)

/*
 * 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	{
0e78b121 TL	56	if (of_machine_is_compatible("nokia,n800"))
	57	board_caps = NOKIA_N800;
	58	else if (of_machine_is_compatible("nokia,n810"))
	59	board_caps = NOKIA_N810;
	60	else if (of_machine_is_compatible("nokia,n810-wimax"))
	61	board_caps = NOKIA_N810_WIMAX;
c8f27e97 TL	62
	63	if (!board_caps)
	64	pr_err("Unknown board\n");
	65	}
	66
502ad2a6	67	#if IS_ENABLED(CONFIG_USB_MUSB_TUSB6010)
97b9ad16 FA	68	/*
	69	* Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and
	70	* 1.5 V voltage regulators of PM companion chip. Companion chip will then
	71	* provide then PGOOD signal to TUSB6010 which will release it from reset.
	72	*/
	73	static int tusb_set_power(int state)
	74	{
	75	int i, retval = 0;
	76
	77	if (state) {
	78	gpio_set_value(TUSB6010_GPIO_ENABLE, 1);
	79	msleep(1);
	80
	81	/* Wait until TUSB6010 pulls INT pin down */
	82	i = 100;
	83	while (i && gpio_get_value(TUSB6010_GPIO_INT)) {
	84	msleep(1);
	85	i--;
	86	}
	87
	88	if (!i) {
	89	printk(KERN_ERR "tusb: powerup failed\n");
	90	retval = -ENODEV;
	91	}
	92	} else {
	93	gpio_set_value(TUSB6010_GPIO_ENABLE, 0);
	94	msleep(10);
	95	}
	96
	97	return retval;
	98	}
	99
	100	static struct musb_hdrc_config musb_config = {
	101	.multipoint = 1,
	102	.dyn_fifo = 1,
	103	.num_eps = 16,
	104	.ram_bits = 12,
	105	};
	106
	107	static struct musb_hdrc_platform_data tusb_data = {
97b9ad16	108	.mode = MUSB_OTG,
97b9ad16 FA	109	.set_power = tusb_set_power,
	110	.min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */
	111	.power = 100, /* Max 100 mA VBUS for host mode */
	112	.config = &musb_config,
	113	};
	114
	115	static void __init n8x0_usb_init(void)
	116	{
	117	int ret = 0;
06324664	118	static const char announce[] __initconst = KERN_INFO "TUSB 6010\n";
97b9ad16 FA	119
97b9ad16 FA	120	/* PM companion chip power control pin */
bc593f5d IG	121	ret = gpio_request_one(TUSB6010_GPIO_ENABLE, GPIOF_OUT_INIT_LOW,
bc593f5d IG	122	"TUSB6010 enable");
97b9ad16 FA	123	if (ret != 0) {
	124	printk(KERN_ERR "Could not get TUSB power GPIO%i\n",
	125	TUSB6010_GPIO_ENABLE);
	126	return;
	127	}
97b9ad16 FA	128	tusb_set_power(0);
	129
	130	ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2,
	131	TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS,
	132	TUSB6010_GPIO_INT, TUSB6010_DMACHAN);
	133	if (ret != 0)
	134	goto err;
	135
	136	printk(announce);
	137
	138	return;
	139
	140	err:
	141	gpio_free(TUSB6010_GPIO_ENABLE);
	142	}
	143	#else
	144
	145	static void __init n8x0_usb_init(void) {}
	146
7c925546	147	#endif /CONFIG_USB_MUSB_TUSB6010 /
97b9ad16 FA	148
97b9ad16 FA	149
63138812 KV	150	static struct omap2_mcspi_device_config p54spi_mcspi_config = {
63138812 KV	151	.turbo_mode = 0,
63138812 KV	152	};
	153
	154	static struct spi_board_info n800_spi_board_info[] __initdata = {
	155	{
	156	.modalias = "p54spi",
	157	.bus_num = 2,
	158	.chip_select = 0,
	159	.max_speed_hz = 48000000,
	160	.controller_data = &p54spi_mcspi_config,
	161	},
	162	};
	163
502ad2a6	164	#if defined(CONFIG_MENELAUS) && IS_ENABLED(CONFIG_MMC_OMAP)
9418c65f TL	165
	166	/*
	167	* On both N800 and N810, only the first of the two MMC controllers is in use.
	168	* The two MMC slots are multiplexed via Menelaus companion chip over I2C.
	169	* On N800, both slots are powered via Menelaus. On N810, only one of the
	170	* slots is powered via Menelaus. The N810 EMMC is powered via GPIO.
	171	*
	172	* VMMC slot 1 on both N800 and N810
	173	* VDCDC3_APE and VMCS2_APE slot 2 on N800
	174	* GPIO23 and GPIO9 slot 2 EMMC on N810
	175	*
	176	*/
	177	#define N8X0_SLOT_SWITCH_GPIO 96
	178	#define N810_EMMC_VSD_GPIO 23
1dea5c6b	179	#define N810_EMMC_VIO_GPIO 9
9418c65f	180
49b87c6d TL	181	static int slot1_cover_open;
	182	static int slot2_cover_open;
	183	static struct device *mmc_device;
	184
9418c65f TL	185	static int n8x0_mmc_switch_slot(struct device *dev, int slot)
	186	{
	187	#ifdef CONFIG_MMC_DEBUG
	188	dev_dbg(dev, "Choose slot %d\n", slot + 1);
	189	#endif
	190	gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot);
	191	return 0;
	192	}
	193
	194	static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
	195	int power_on, int vdd)
	196	{
	197	int mV;
	198
	199	#ifdef CONFIG_MMC_DEBUG
	200	dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
	201	power_on ? "on" : "off", vdd);
	202	#endif
	203	if (slot == 0) {
	204	if (!power_on)
	205	return menelaus_set_vmmc(0);
	206	switch (1 << vdd) {
	207	case MMC_VDD_33_34:
	208	case MMC_VDD_32_33:
	209	case MMC_VDD_31_32:
	210	mV = 3100;
	211	break;
	212	case MMC_VDD_30_31:
	213	mV = 3000;
	214	break;
	215	case MMC_VDD_28_29:
	216	mV = 2800;
	217	break;
	218	case MMC_VDD_165_195:
	219	mV = 1850;
	220	break;
	221	default:
	222	BUG();
	223	}
	224	return menelaus_set_vmmc(mV);
	225	} else {
	226	if (!power_on)
	227	return menelaus_set_vdcdc(3, 0);
	228	switch (1 << vdd) {
	229	case MMC_VDD_33_34:
	230	case MMC_VDD_32_33:
	231	mV = 3300;
	232	break;
	233	case MMC_VDD_30_31:
	234	case MMC_VDD_29_30:
	235	mV = 3000;
	236	break;
	237	case MMC_VDD_28_29:
	238	case MMC_VDD_27_28:
	239	mV = 2800;
	240	break;
	241	case MMC_VDD_24_25:
	242	case MMC_VDD_23_24:
	243	mV = 2400;
	244	break;
	245	case MMC_VDD_22_23:
	246	case MMC_VDD_21_22:
	247	mV = 2200;
	248	break;
249	case MMC_VDD_20_21:
250	mV = 2000;
251	break;
252	case MMC_VDD_165_195:
253	mV = 1800;
254	break;
255	default:
256	BUG();
257	}
258	return menelaus_set_vdcdc(3, mV);
259	}
260	return 0;
261	}
262
263	static void n810_set_power_emmc(struct device *dev,
264	int power_on)
265	{
266	dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off");
267
268	if (power_on) {
269	gpio_set_value(N810_EMMC_VSD_GPIO, 1);
270	msleep(1);
1dea5c6b	271	gpio_set_value(N810_EMMC_VIO_GPIO, 1);
9418c65f TL	272	msleep(1);
9418c65f TL	273	} else {
1dea5c6b	274	gpio_set_value(N810_EMMC_VIO_GPIO, 0);
9418c65f TL	275	msleep(50);
	276	gpio_set_value(N810_EMMC_VSD_GPIO, 0);
	277	msleep(50);
	278	}
	279	}
	280
	281	static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
	282	int vdd)
	283	{
c8f27e97	284	if (board_is_n800() \|\| slot == 0)
9418c65f TL	285	return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);
	286
	287	n810_set_power_emmc(dev, power_on);
	288
	289	return 0;
	290	}
	291
	292	static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
	293	{
	294	int r;
	295
	296	dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
	297	bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
	298	BUG_ON(slot != 0 && slot != 1);
	299	slot++;
	300	switch (bus_mode) {
	301	case MMC_BUSMODE_OPENDRAIN:
	302	r = menelaus_set_mmc_opendrain(slot, 1);
	303	break;
	304	case MMC_BUSMODE_PUSHPULL:
	305	r = menelaus_set_mmc_opendrain(slot, 0);
	306	break;
	307	default:
	308	BUG();
	309	}
	310	if (r != 0 && printk_ratelimit())
	311	dev_err(dev, "MMC: unable to set bus mode for slot %d\n",
	312	slot);
	313	return r;
	314	}
	315
	316	static int n8x0_mmc_get_cover_state(struct device *dev, int slot)
	317	{
	318	slot++;
	319	BUG_ON(slot != 1 && slot != 2);
	320	if (slot == 1)
	321	return slot1_cover_open;
	322	else
	323	return slot2_cover_open;
	324	}
	325
	326	static void n8x0_mmc_callback(void *data, u8 card_mask)
	327	{
	328	int bit, *openp, index;
	329
c8f27e97	330	if (board_is_n800()) {
9418c65f TL	331	bit = 1 << 1;
	332	openp = &slot2_cover_open;
	333	index = 1;
	334	} else {
	335	bit = 1;
	336	openp = &slot1_cover_open;
	337	index = 0;
	338	}
	339
	340	if (card_mask & bit)
	341	*openp = 1;
	342	else
	343	*openp = 0;
	344
d5171102	345	#ifdef CONFIG_MMC_OMAP
9418c65f	346	omap_mmc_notify_cover_event(mmc_device, index, *openp);
d5171102 TL	347	#else
	348	pr_warn("MMC: notify cover event not available\n");
	349	#endif
9418c65f TL	350	}
9418c65f TL	351
9418c65f TL	352	static int n8x0_mmc_late_init(struct device *dev)
	353	{
	354	int r, bit, *openp;
	355	int vs2sel;
	356
	357	mmc_device = dev;
	358
	359	r = menelaus_set_slot_sel(1);
	360	if (r < 0)
	361	return r;
	362
c8f27e97	363	if (board_is_n800())
9418c65f TL	364	vs2sel = 0;
	365	else
	366	vs2sel = 2;
	367
	368	r = menelaus_set_mmc_slot(2, 0, vs2sel, 1);
	369	if (r < 0)
	370	return r;
	371
	372	n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */
	373	n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16);
	374
	375	r = menelaus_set_mmc_slot(1, 1, 0, 1);
	376	if (r < 0)
	377	return r;
	378	r = menelaus_set_mmc_slot(2, 1, vs2sel, 1);
	379	if (r < 0)
	380	return r;
	381
	382	r = menelaus_get_slot_pin_states();
	383	if (r < 0)
	384	return r;
	385
c8f27e97	386	if (board_is_n800()) {
9418c65f TL	387	bit = 1 << 1;
	388	openp = &slot2_cover_open;
	389	} else {
	390	bit = 1;
	391	openp = &slot1_cover_open;
	392	slot2_cover_open = 0;
	393	}
	394
	395	/* All slot pin bits seem to be inversed until first switch change */
	396	if (r == 0xf \|\| r == (0xf & ~bit))
	397	r = ~r;
	398
	399	if (r & bit)
	400	*openp = 1;
	401	else
	402	*openp = 0;
	403
	404	r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL);
	405
	406	return r;
	407	}
	408
	409	static void n8x0_mmc_shutdown(struct device *dev)
	410	{
	411	int vs2sel;
	412
c8f27e97	413	if (board_is_n800())
9418c65f TL	414	vs2sel = 0;
	415	else
	416	vs2sel = 2;
	417
	418	menelaus_set_mmc_slot(1, 0, 0, 0);
	419	menelaus_set_mmc_slot(2, 0, vs2sel, 0);
	420	}
	421
	422	static void n8x0_mmc_cleanup(struct device *dev)
	423	{
	424	menelaus_unregister_mmc_callback();
	425
	426	gpio_free(N8X0_SLOT_SWITCH_GPIO);
	427
c8f27e97	428	if (board_is_n810()) {
9418c65f	429	gpio_free(N810_EMMC_VSD_GPIO);
1dea5c6b	430	gpio_free(N810_EMMC_VIO_GPIO);
9418c65f TL	431	}
	432	}
	433
	434	/*
	435	* MMC controller1 has two slots that are multiplexed via I2C.
	436	* MMC controller2 is not in use.
	437	*/
	438	static struct omap_mmc_platform_data mmc1_data = {
fa590c92	439	.nr_slots = 0,
9418c65f TL	440	.switch_slot = n8x0_mmc_switch_slot,
	441	.init = n8x0_mmc_late_init,
	442	.cleanup = n8x0_mmc_cleanup,
	443	.shutdown = n8x0_mmc_shutdown,
	444	.max_freq = 24000000,
9418c65f TL	445	.slots[0] = {
	446	.wires = 4,
	447	.set_power = n8x0_mmc_set_power,
	448	.set_bus_mode = n8x0_mmc_set_bus_mode,
	449	.get_cover_state = n8x0_mmc_get_cover_state,
	450	.ocr_mask = MMC_VDD_165_195 \| MMC_VDD_30_31 \|
	451	MMC_VDD_32_33 \| MMC_VDD_33_34,
	452	.name = "internal",
	453	},
	454	.slots[1] = {
	455	.set_power = n8x0_mmc_set_power,
	456	.set_bus_mode = n8x0_mmc_set_bus_mode,
	457	.get_cover_state = n8x0_mmc_get_cover_state,
	458	.ocr_mask = MMC_VDD_165_195 \| MMC_VDD_20_21 \|
	459	MMC_VDD_21_22 \| MMC_VDD_22_23 \|
	460	MMC_VDD_23_24 \| MMC_VDD_24_25 \|
	461	MMC_VDD_27_28 \| MMC_VDD_28_29 \|
	462	MMC_VDD_29_30 \| MMC_VDD_30_31 \|
	463	MMC_VDD_32_33 \| MMC_VDD_33_34,
	464	.name = "external",
	465	},
	466	};
	467
	468	static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
	469
bc593f5d IG	470	static struct gpio n810_emmc_gpios[] __initdata = {
	471	{ N810_EMMC_VSD_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vddf" },
	472	{ N810_EMMC_VIO_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vdd" },
	473	};
9418c65f	474
bc593f5d	475	static void __init n8x0_mmc_init(void)
9418c65f TL	476	{
	477	int err;
	478
c8f27e97	479	if (board_is_n810()) {
9418c65f TL	480	mmc1_data.slots[0].name = "external";
	481
	482	/*
	483	* Some Samsung Movinand chips do not like open-ended
	484	* multi-block reads and fall to braind-dead state
	485	* while doing so. Reducing the number of blocks in
	486	* the transfer or delays in clock disable do not help
	487	*/
	488	mmc1_data.slots[1].name = "internal";
	489	mmc1_data.slots[1].ban_openended = 1;
	490	}
	491
bc593f5d IG	492	err = gpio_request_one(N8X0_SLOT_SWITCH_GPIO, GPIOF_OUT_INIT_LOW,
bc593f5d IG	493	"MMC slot switch");
9418c65f	494	if (err)
1dea5c6b	495	return;
9418c65f	496
c8f27e97	497	if (board_is_n810()) {
bc593f5d IG	498	err = gpio_request_array(n810_emmc_gpios,
bc593f5d IG	499	ARRAY_SIZE(n810_emmc_gpios));
9418c65f TL	500	if (err) {
9418c65f TL	501	gpio_free(N8X0_SLOT_SWITCH_GPIO);
1dea5c6b	502	return;
9418c65f	503	}
9418c65f TL	504	}
9418c65f TL	505
fa590c92	506	mmc1_data.nr_slots = 2;
9418c65f	507	mmc_data[0] = &mmc1_data;
9418c65f TL	508	}
9418c65f TL	509	#else
fa590c92	510	static struct omap_mmc_platform_data mmc1_data;
9418c65f TL	511	void __init n8x0_mmc_init(void)
	512	{
	513	}
9418c65f TL	514	#endif /* CONFIG_MMC_OMAP */
	515
	516	#ifdef CONFIG_MENELAUS
	517
	518	static int n8x0_auto_sleep_regulators(void)
	519	{
	520	u32 val;
	521	int ret;
	522
	523	val = EN_VPLL_SLEEP \| EN_VMMC_SLEEP \
	524	\| EN_VAUX_SLEEP \| EN_VIO_SLEEP \
	525	\| EN_VMEM_SLEEP \| EN_DC3_SLEEP \
	526	\| EN_VC_SLEEP \| EN_DC2_SLEEP;
	527
	528	ret = menelaus_set_regulator_sleep(1, val);
	529	if (ret < 0) {
7852ec05 PW	530	pr_err("Could not set regulators to sleep on menelaus: %u\n",
7852ec05 PW	531	ret);
9418c65f TL	532	return ret;
	533	}
	534	return 0;
	535	}
	536
	537	static int n8x0_auto_voltage_scale(void)
	538	{
	539	int ret;
	540
	541	ret = menelaus_set_vcore_hw(1400, 1050);
	542	if (ret < 0) {
7852ec05	543	pr_err("Could not set VCORE voltage on menelaus: %u\n", ret);
9418c65f TL	544	return ret;
	545	}
	546	return 0;
	547	}
	548
	549	static int n8x0_menelaus_late_init(struct device *dev)
	550	{
	551	int ret;
	552
	553	ret = n8x0_auto_voltage_scale();
	554	if (ret < 0)
	555	return ret;
	556	ret = n8x0_auto_sleep_regulators();
	557	if (ret < 0)
	558	return ret;
	559	return 0;
	560	}
	561
a7f97d25 JN	562	#else
	563	static int n8x0_menelaus_late_init(struct device *dev)
	564	{
	565	return 0;
	566	}
	567	#endif
	568
e92ce89c	569	struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
a7f97d25 JN	570	.late_init = n8x0_menelaus_late_init,
	571	};
	572
e92ce89c	573	struct aic3x_pdata n810_aic33_data __initdata = {
366498d4	574	.gpio_reset = 118,
9418c65f TL	575	};
9418c65f TL	576
810ac2a1 TL	577	static int __init n8x0_late_initcall(void)
	578	{
	579	if (!board_caps)
	580	return -ENODEV;
	581
810ac2a1 TL	582	n8x0_mmc_init();
810ac2a1 TL	583	n8x0_usb_init();
810ac2a1 TL	584
	585	return 0;
	586	}
	587	omap_late_initcall(n8x0_late_initcall);
	588
fa590c92 TL	589	/*
	590	* Legacy init pdata init for n8x0. Note that we want to follow the
	591	* I2C bus numbering starting at 0 for device tree like other omaps.
	592	*/
	593	void * __init n8x0_legacy_init(void)
	594	{
	595	board_check_revision();
	596	spi_register_board_info(n800_spi_board_info,
	597	ARRAY_SIZE(n800_spi_board_info));
fa590c92 TL	598	return &mmc1_data;
fa590c92 TL	599	}