/*
 * arch/arm/mach-tegra/board-roth-sensors.c
 *
 * Copyright (c) 2012-2013 NVIDIA CORPORATION, All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * Neither the name of NVIDIA CORPORATION nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * 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/delay.h>
#include <linux/mpu.h>
#include <linux/gpio.h>
#include <linux/therm_est.h>
#include <linux/nct1008.h>
#include <mach/edp.h>
#include <mach/gpio-tegra.h>
#include <mach/pinmux-t11.h>
#include <mach/pinmux.h>
#include <generated/mach-types.h>

#include "gpio-names.h"
#include "board.h"
#include "board-common.h"
#include "board-roth.h"
#include "cpu-tegra.h"
#include "devices.h"
#include "tegra-board-id.h"
#include "dvfs.h"

static struct board_info board_info;

static struct throttle_table tj_throttle_table[] = {
		/* CPU_THROT_LOW cannot be used by other than CPU */
		/* NO_CAP cannot be used by CPU */
		/*    CPU,   C2BUS,   C3BUS,    SCLK,     EMC */
		{ { 1530000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1428000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1326000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1224000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1122000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1020000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  918000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  816000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  714000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  612000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  612000,  564000,  564000,  NO_CAP,  NO_CAP } },
		{ {  612000,  528000,  528000,  NO_CAP,  NO_CAP } },
		{ {  612000,  492000,  492000,  NO_CAP,  NO_CAP } },
		{ {  612000,  420000,  420000,  NO_CAP,  NO_CAP } },
		{ {  612000,  408000,  408000,  NO_CAP,  NO_CAP } },
		{ {  612000,  360000,  360000,  NO_CAP,  NO_CAP } },
		{ {  612000,  360000,  360000,  312000,  NO_CAP } },
		{ {  510000,  360000,  360000,  312000,  480000 } },
		{ {  468000,  360000,  360000,  312000,  480000 } },
		{ {  468000,  276000,  276000,  208000,  480000 } },
		{ {  372000,  276000,  276000,  208000,  204000 } },
		{ {  288000,  276000,  276000,  208000,  204000 } },
		{ {  252000,  276000,  228000,  208000,  102000 } },
		{ {  204000,  276000,  228000,  208000,  102000 } },
		{ {  102000,  276000,  228000,  208000,  102000 } },
	  { { CPU_THROT_LOW,  276000,  228000,  208000,  102000 } },
};

static struct balanced_throttle tj_throttle = {
	.throt_tab_size = ARRAY_SIZE(tj_throttle_table),
	.throt_tab = tj_throttle_table,
};

static struct throttle_table tj_heavy_throttle_table[] = {
	{ {  204000,  420000,  360000,  208000,  204000 } },
};

static struct balanced_throttle tj_heavy_throttle = {
	.throt_tab_size = ARRAY_SIZE(tj_heavy_throttle_table),
	.throt_tab = tj_heavy_throttle_table,
};

static int __init roth_throttle_init(void)
{
	if (machine_is_roth()) {
		balanced_throttle_register(&tj_throttle, "tegra-balanced");
		balanced_throttle_register(&tj_heavy_throttle, "tegra-heavy");
	}

	return 0;
}
module_init(roth_throttle_init);

static struct thermal_zone_params roth_nct1008_tzp = {
	.governor_name = "step_wise",
};

static struct nct1008_platform_data roth_nct1008_pdata = {
	.supported_hwrev = true,
	.ext_range = true,
	.conv_rate = 0x08,
	.offset = 0,
	.shutdown_ext_limit = 91, /* C */
	.shutdown_local_limit = 120, /* C */
	.loc_name = "soc",

	.passive_delay = 2000,

	.num_trips = 2,
	.trips = {
		/* Thermal Throttling */
		[0] = {
			.cdev_type = "tegra-balanced",
			.trip_temp = 80000,
			.trip_type = THERMAL_TRIP_PASSIVE,
			.upper = THERMAL_NO_LIMIT,
			.lower = THERMAL_NO_LIMIT,
			.hysteresis = 0,
		},
		[1] = {
			.cdev_type = "tegra-heavy",
			.trip_temp = 86000, /* shutdown_ext_limit - 2C */
			.trip_type = THERMAL_TRIP_PASSIVE,
			.upper = 1,
			.lower = 1,
			.hysteresis = 6000,
		},
	},
	.tzp = &roth_nct1008_tzp,
};

static struct i2c_board_info roth_i2c4_nct1008_board_info[] = {
	{
		I2C_BOARD_INFO("nct1008", 0x4C),
		.platform_data = &roth_nct1008_pdata,
		.irq = -1,
	}
};

#define VI_PINMUX(_pingroup, _mux, _pupd, _tri, _io, _lock, _ioreset) \
	{							\
		.pingroup	= TEGRA_PINGROUP_##_pingroup,	\
		.func		= TEGRA_MUX_##_mux,		\
		.pupd		= TEGRA_PUPD_##_pupd,		\
		.tristate	= TEGRA_TRI_##_tri,		\
		.io		= TEGRA_PIN_##_io,		\
		.lock		= TEGRA_PIN_LOCK_##_lock,	\
		.od		= TEGRA_PIN_OD_DEFAULT,		\
		.ioreset	= TEGRA_PIN_IO_RESET_##_ioreset	\
	}

/* MPU board file definition	*/
static struct mpu_platform_data mpu6050_gyro_data = {
	.int_config	= 0x10,
	.level_shifter	= 0,
	/* Located in board_[platformname].h */
	.orientation	= MPU_GYRO_ORIENTATION,
	.sec_slave_type	= SECONDARY_SLAVE_TYPE_NONE,
	.key		= {0x4E, 0xCC, 0x7E, 0xEB, 0xF6, 0x1E, 0x35, 0x22,
			   0x00, 0x34, 0x0D, 0x65, 0x32, 0xE9, 0x94, 0x89},
};

static struct i2c_board_info __initdata inv_mpu6050_i2c2_board_info[] = {
	{
		I2C_BOARD_INFO(MPU_GYRO_NAME, MPU_GYRO_ADDR),
		.platform_data = &mpu6050_gyro_data,
	},
};

static void mpuirq_init(void)
{
	int ret = 0;
	unsigned gyro_irq_gpio = MPU_GYRO_IRQ_GPIO;
	unsigned gyro_bus_num = MPU_GYRO_BUS_NUM;
	char *gyro_name = MPU_GYRO_NAME;

	pr_info("*** MPU START *** mpuirq_init...\n");

	ret = gpio_request(gyro_irq_gpio, gyro_name);

	if (ret < 0) {
		pr_err("%s: gpio_request failed %d\n", __func__, ret);
		return;
	}

	ret = gpio_direction_input(gyro_irq_gpio);
	if (ret < 0) {
		pr_err("%s: gpio_direction_input failed %d\n", __func__, ret);
		gpio_free(gyro_irq_gpio);
		return;
	}
	pr_info("*** MPU END *** mpuirq_init...\n");

	inv_mpu6050_i2c2_board_info[0].irq = gpio_to_irq(MPU_GYRO_IRQ_GPIO);
	i2c_register_board_info(gyro_bus_num, inv_mpu6050_i2c2_board_info,
		ARRAY_SIZE(inv_mpu6050_i2c2_board_info));
}

static int roth_nct1008_init(void)
{
	int nct1008_port = TEGRA_GPIO_PX6;
	int ret = 0;

	tegra_platform_edp_init(roth_nct1008_pdata.trips,
				&roth_nct1008_pdata.num_trips,
				0); /* edp temperature margin */
	tegra_add_cdev_trips(roth_nct1008_pdata.trips,
				&roth_nct1008_pdata.num_trips);
	tegra_add_tj_trips(roth_nct1008_pdata.trips,
				&roth_nct1008_pdata.num_trips);

	roth_i2c4_nct1008_board_info[0].irq = gpio_to_irq(nct1008_port);
	pr_info("%s: roth nct1008 irq %d", __func__, \
				roth_i2c4_nct1008_board_info[0].irq);

	ret = gpio_request(nct1008_port, "temp_alert");
	if (ret < 0)
		return ret;

	ret = gpio_direction_input(nct1008_port);
	if (ret < 0) {
		pr_info("%s: calling gpio_free(nct1008_port)", __func__);
		gpio_free(nct1008_port);
	}

	/* roth has thermal sensor on GEN1-I2C i.e. instance 0 */
	i2c_register_board_info(0, roth_i2c4_nct1008_board_info,
		ARRAY_SIZE(roth_i2c4_nct1008_board_info));

	return ret;
}

#ifdef CONFIG_TEGRA_SKIN_THROTTLE
static int tegra_skin_match(struct thermal_zone_device *thz, void *data)
{
	return strcmp((char *)data, thz->type) == 0;
}

static int tegra_skin_get_temp(void *data, long *temp)
{
	struct thermal_zone_device *thz;

	thz = thermal_zone_device_find(data, tegra_skin_match);

	if (!thz || thz->ops->get_temp(thz, temp))
		*temp = 25000;

	return 0;
}

static struct therm_est_data skin_data = {
	.cdev_type = "skin-balanced",
	.toffset = 9793,
	.polling_period = 1100,
	.ndevs = 2,
	.tc1 = 10,
	.tc2 = 1,
	.devs = {
			{
				.dev_data = "nct_ext",
				.get_temp = tegra_skin_get_temp,
				.coeffs = {
					2, 1, 1, 1,
					1, 1, 1, 1,
					1, 1, 1, 0,
					1, 1, 0, 0,
					0, 0, -1, -7
				},
			},
			{
				.dev_data = "nct_int",
				.get_temp = tegra_skin_get_temp,
				.coeffs = {
					-11, -7, -5, -3,
					-3, -2, -1, 0,
					0, 0, 1, 1,
					1, 2, 2, 3,
					4, 6, 11, 18
				},
			},
	},
	.trip_temp = 45000,
	.passive_delay = 15000,
};

static struct throttle_table skin_throttle_table[] = {
		/* CPU_THROT_LOW cannot be used by other than CPU */
		/* NO_CAP cannot be used by CPU */
		/*    CPU,   C2BUS,   C3BUS,    SCLK,     EMC */
		{ { 1530000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1530000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1326000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1326000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1326000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1326000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1326000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1122000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1122000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1122000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1122000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1122000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1122000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1020000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1020000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1020000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1020000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1020000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ { 1020000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  918000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  918000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  918000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  918000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  918000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  918000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  816000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  816000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  816000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  816000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  816000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  816000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  714000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  714000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  714000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  714000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  714000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  714000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  612000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  612000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  612000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  612000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  612000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  612000,  NO_CAP,  NO_CAP,  NO_CAP,  NO_CAP } },
		{ {  612000,  564000,  564000,  NO_CAP,  NO_CAP } },
		{ {  612000,  564000,  564000,  NO_CAP,  NO_CAP } },
		{ {  612000,  528000,  528000,  NO_CAP,  NO_CAP } },
		{ {  612000,  528000,  528000,  NO_CAP,  NO_CAP } },
		{ {  612000,  492000,  492000,  NO_CAP,  NO_CAP } },
		{ {  612000,  492000,  492000,  NO_CAP,  NO_CAP } },
		{ {  612000,  420000,  420000,  NO_CAP,  NO_CAP } },
		{ {  612000,  420000,  420000,  NO_CAP,  NO_CAP } },
		{ {  612000,  408000,  408000,  NO_CAP,  NO_CAP } },
		{ {  612000,  408000,  408000,  NO_CAP,  NO_CAP } },
		{ {  612000,  360000,  360000,  NO_CAP,  NO_CAP } },
		{ {  612000,  360000,  360000,  NO_CAP,  NO_CAP } },
		{ {  510000,  360000,  360000,  312000,  NO_CAP } },
		{ {  510000,  360000,  360000,  312000,  NO_CAP } },
		{ {  510000,  360000,  360000,  312000,  480000 } },
		{ {  510000,  360000,  360000,  312000,  480000 } },
		{ {  510000,  360000,  360000,  312000,  480000 } },
		{ {  510000,  360000,  360000,  312000,  480000 } },
		{ {  510000,  360000,  360000,  312000,  480000 } },
		{ {  510000,  360000,  360000,  312000,  480000 } },
		{ {  468000,  360000,  360000,  312000,  480000 } },
		{ {  468000,  360000,  360000,  312000,  480000 } },
		{ {  468000,  276000,  276000,  208000,  480000 } },
		{ {  468000,  276000,  276000,  208000,  480000 } },
		{ {  372000,  276000,  276000,  208000,  204000 } },
		{ {  372000,  276000,  276000,  208000,  204000 } },
		{ {  288000,  276000,  276000,  208000,  204000 } },
		{ {  288000,  276000,  276000,  208000,  204000 } },
		{ {  252000,  276000,  228000,  208000,  102000 } },
		{ {  252000,  276000,  228000,  208000,  102000 } },
		{ {  204000,  276000,  228000,  208000,  102000 } },
		{ {  204000,  276000,  228000,  208000,  102000 } },
		{ {  102000,  276000,  228000,  208000,  102000 } },
	  { { CPU_THROT_LOW,  276000,  228000,  208000,  102000 } },
};

static struct balanced_throttle skin_throttle = {
	.throt_tab_size = ARRAY_SIZE(skin_throttle_table),
	.throt_tab = skin_throttle_table,
};

static int __init roth_skin_init(void)
{
	if (machine_is_roth()) {
		balanced_throttle_register(&skin_throttle, "skin-balanced");
		tegra_skin_therm_est_device.dev.platform_data = &skin_data;
		platform_device_register(&tegra_skin_therm_est_device);
	}

	return 0;
}
late_initcall(roth_skin_init);
#endif

static int roth_fan_est_match(struct thermal_zone_device *thz, void *data)
{
	return (strcmp((char *)data, thz->type) == 0);
}

static int roth_fan_est_get_temp(void *data, long *temp)
{
	struct thermal_zone_device *thz;

	thz = thermal_zone_device_find(data, roth_fan_est_match);

	if (!thz || thz->ops->get_temp(thz, temp))
		*temp = 25000;

	return 0;
}

/*Fan thermal estimator init data for P2454*/
static struct therm_fan_est_data fan_est_data_p2454 = {
	.toffset = 0,
	.polling_period = 1100,
	.ndevs = 2,
	.devs = {
			{
				.dev_data = "nct_ext_soc",
				.get_temp = roth_fan_est_get_temp,
				.coeffs = {
					100, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0
				},
			},
			{
				.dev_data = "nct_int_soc",
				.get_temp = roth_fan_est_get_temp,
				.coeffs = {
					0, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0
				},
			},
	},
	.cdev_type = "pwm-fan",
	.active_trip_temps = {0, 70000, 82000, 120000, 130000,
				140000, 150000, 160000, 170000, 180000},
	.active_hysteresis = {0, 10000, 7000, 0, 0, 0, 0, 0, 0, 0},
};

static struct platform_device roth_fan_therm_est_device_p2454 = {
	.name   = "therm-fan-est",
	.id     = -1,
	.num_resources  = 0,
	.dev = {
		.platform_data = &fan_est_data_p2454,
	},
};

/*Fan thermal estimator data for P2560*/
static struct therm_fan_est_data fan_est_data_p2560 = {
	.toffset = 0,
	.polling_period = 1100,
	.ndevs = 2,
	.devs = {
			{
				.dev_data = "nct_ext_soc",
				.get_temp = roth_fan_est_get_temp,
				.coeffs = {
					100, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0
				},
			},
			{
				.dev_data = "nct_int_soc",
				.get_temp = roth_fan_est_get_temp,
				.coeffs = {
					0, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0,
					0, 0, 0, 0
				},
			},
	},
	.cdev_type = "pwm-fan",
	.active_trip_temps = {0, 47000, 55000, 67000, 103000,
				140000, 150000, 160000, 170000, 180000},
	.active_hysteresis = {0, 12000, 7000, 10000, 0, 0, 0, 0, 0, 0},
};

static struct platform_device roth_fan_therm_est_device_p2560 = {
	.name   = "therm-fan-est",
	.id     = -1,
	.num_resources  = 0,
	.dev = {
		.platform_data = &fan_est_data_p2560,
	},
};

static int __init roth_fan_est_init(void)
{
	struct board_info board_info;

	tegra_get_board_info(&board_info);
	if (board_info.board_id == BOARD_P2560)
		platform_device_register(&roth_fan_therm_est_device_p2560);
	else
		platform_device_register(&roth_fan_therm_est_device_p2454);

	return 0;
}

int __init roth_sensors_init(void)
{
	int err;

	tegra_get_board_info(&board_info);

	err = roth_nct1008_init();
	if (err)
		return err;

	mpuirq_init();

	roth_fan_est_init();

	return 0;
}