/*
 * arch/arm/mach-tegra/p852/board-p852-power.c
 *
 * Copyright (c) 2010-2011, NVIDIA Corporation.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#include <linux/i2c.h>
#include <linux/pda_power.h>
#include <linux/platform_device.h>
#include <linux/resource.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/tps6586x.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <mach/iomap.h>
#include <mach/irqs.h>
#include "board-p852.h"

#define PMC_CTRL		0x0
#define PMC_CTRL_INTR_LOW	(1 << 17)

static struct regulator_consumer_supply tps658621_sm0_supply[] = {
	REGULATOR_SUPPLY("vdd_core", NULL),
};
static struct regulator_consumer_supply tps658621_sm1_supply[] = {
	REGULATOR_SUPPLY("vdd_cpu", NULL),
};
static struct regulator_consumer_supply tps658621_sm2_supply[] = {
	REGULATOR_SUPPLY("vdd_sm2", NULL),
};
static struct regulator_consumer_supply tps658621_ldo0_supply[] = {
	REGULATOR_SUPPLY("vddio_pex_clk", NULL),
};
static struct regulator_consumer_supply tps658621_ldo1_supply[] = {
	REGULATOR_SUPPLY("avdd_pll", NULL),
	REGULATOR_SUPPLY("avdd_plla_pc", NULL),
	REGULATOR_SUPPLY("avdd_pllm", NULL),
	REGULATOR_SUPPLY("avdd_pllu", NULL),
	REGULATOR_SUPPLY("avdd_pllx6", NULL),
};
static struct regulator_consumer_supply tps658621_ldo2_supply[] = {
	REGULATOR_SUPPLY("vdd_rtc", NULL),
};
static struct regulator_consumer_supply tps658621_ldo3_supply[] = {
	REGULATOR_SUPPLY("avdd_usb", NULL),
	REGULATOR_SUPPLY("avdd_usb_pll", NULL),
	REGULATOR_SUPPLY("avdd_lvds", NULL),
};
static struct regulator_consumer_supply tps658621_ldo4_supply[] = {
	REGULATOR_SUPPLY("avdd_osc", NULL),
	REGULATOR_SUPPLY("vddio_sys", "panjit_touch"),
};
static struct regulator_consumer_supply tps658621_ldo5_supply[] = {
	REGULATOR_SUPPLY("vddio_lcd", NULL),
};
static struct regulator_consumer_supply tps658621_ldo6_supply[] = {
	REGULATOR_SUPPLY("avdd_vdac", NULL),
};
static struct regulator_consumer_supply tps658621_ldo7_supply[] = {
	REGULATOR_SUPPLY("vddio_vi", NULL),
	REGULATOR_SUPPLY("vdd_fuse", NULL),
	REGULATOR_SUPPLY("vspi", "spi_tegra.0"),
};
static struct regulator_consumer_supply tps658621_ldo8_supply[] = {
	REGULATOR_SUPPLY("vddio_bb", NULL),
	REGULATOR_SUPPLY("vmmc", "sdhci-tegra.0"),
	REGULATOR_SUPPLY("vmmc", "sdhci-tegra.2"),
};
static struct regulator_consumer_supply tps658621_ldo9_supply[] = {
	REGULATOR_SUPPLY("vdd_ddr_rx", NULL),
	REGULATOR_SUPPLY("vmmc", "sdhci-tegra.3"),
};

#define REGULATOR_INIT(_id, _minmv, _maxmv)				\
	{								\
		.constraints = {					\
			.min_uV = (_minmv)*1000,			\
			.max_uV = (_maxmv)*1000,			\
			.valid_modes_mask = (REGULATOR_MODE_NORMAL |	\
					     REGULATOR_MODE_STANDBY),	\
			.valid_ops_mask = (REGULATOR_CHANGE_MODE |	\
					   REGULATOR_CHANGE_STATUS |	\
					   REGULATOR_CHANGE_VOLTAGE),	\
		},							\
		.num_consumer_supplies = ARRAY_SIZE(tps658621_##_id##_supply),\
		.consumer_supplies = tps658621_##_id##_supply,		\
	}

static struct regulator_init_data sm0_data = REGULATOR_INIT(sm0, 725, 1500);
static struct regulator_init_data sm1_data = REGULATOR_INIT(sm1, 725, 1500);
static struct regulator_init_data sm2_data = REGULATOR_INIT(sm2, 3000, 4550);
static struct regulator_init_data ldo0_data = REGULATOR_INIT(ldo0, 1250, 3300);
static struct regulator_init_data ldo1_data = REGULATOR_INIT(ldo1, 725, 1500);
static struct regulator_init_data ldo2_data = REGULATOR_INIT(ldo2, 725, 1225);
static struct regulator_init_data ldo3_data = REGULATOR_INIT(ldo3, 1250, 3300);
static struct regulator_init_data ldo4_data = REGULATOR_INIT(ldo4, 1700, 2475);
static struct regulator_init_data ldo5_data = REGULATOR_INIT(ldo5, 1250, 3300);
static struct regulator_init_data ldo6_data = REGULATOR_INIT(ldo6, 1250, 3300);
static struct regulator_init_data ldo7_data = REGULATOR_INIT(ldo7, 1250, 3300);
static struct regulator_init_data ldo8_data = REGULATOR_INIT(ldo8, 1250, 3300);
static struct regulator_init_data ldo9_data = REGULATOR_INIT(ldo9, 1250, 3300);


static struct tps6586x_rtc_platform_data rtc_data = {
	.irq = TEGRA_NR_IRQS + TPS6586X_INT_RTC_ALM1,
	.cl_sel = 0,
};


#define TPS_REG(_id, _data)			\
	{					\
		.id = TPS6586X_ID_##_id,	\
		.name = "tps6586x-regulator",	\
		.platform_data = _data,		\
	}

static struct tps6586x_subdev_info tps_devs[] = {
	TPS_REG(SM_0, &sm0_data),
	TPS_REG(SM_1, &sm1_data),
	TPS_REG(SM_2, &sm2_data),
	TPS_REG(LDO_0, &ldo0_data),
	TPS_REG(LDO_1, &ldo1_data),
	TPS_REG(LDO_2, &ldo2_data),
	TPS_REG(LDO_3, &ldo3_data),
	TPS_REG(LDO_4, &ldo4_data),
	TPS_REG(LDO_5, &ldo5_data),
	TPS_REG(LDO_6, &ldo6_data),
	TPS_REG(LDO_7, &ldo7_data),
	TPS_REG(LDO_8, &ldo8_data),
	TPS_REG(LDO_9, &ldo9_data),
	{
		.id	= 0,
		.name	= "tps6586x-rtc",
		.platform_data = &rtc_data,
	},
};

static struct tps6586x_platform_data tps_platform = {
	.irq_base = TEGRA_NR_IRQS,
	.num_subdevs = ARRAY_SIZE(tps_devs),
	.subdevs = tps_devs,
	.gpio_base = TEGRA_NR_GPIOS,
	.use_power_off = true,
};

static struct i2c_board_info __initdata p852_regulators[] = {
	{
		I2C_BOARD_INFO("tps6586x", 0x34),
		.irq		= INT_EXTERNAL_PMU,
		.platform_data	= &tps_platform,
	},
};

static void __init tps6586x_rtc_preinit(void)
{
	int i;
	struct tps6586x_rtc_platform_data *rtc_pdata;

	if (system_rev == P852_SKU23_B00 ||
		system_rev == P852_SKU23_C01 ||
		system_rev == P852_SKU13_B00 ||
		system_rev == P852_SKU5_B00  ||
		system_rev == P852_SKU5_C01) {
		for (i = 0; i < tps_platform.num_subdevs; ++i)
			if (!strcmp(tps_platform.subdevs[i].name,
				"tps6586x-rtc"))
				rtc_pdata =
					(struct tps6586x_rtc_platform_data *)
					(tps_platform.subdevs[i].platform_data);
				rtc_pdata->cl_sel = TPS6586X_RTC_CL_SEL_1_5PF;
	}
}

int __init p852_regulator_init(void)
{
	void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
	u32 pmc_ctrl;

	/* configure the power management controller to trigger PMU
	 * interrupts when low */
	pmc_ctrl = readl(pmc + PMC_CTRL);
	writel(pmc_ctrl | PMC_CTRL_INTR_LOW, pmc + PMC_CTRL);
	i2c_register_board_info(3, p852_regulators, 1);

	tps6586x_rtc_preinit();

	return 0;
}