/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
/* Pit board-specific configuration */

#include "battery.h"
#include "chipset.h"
#include "common.h"
#include "extpower.h"
#include "gpio.h"
#include "i2c.h"
#include "keyboard_scan.h"
#include "keyboard_raw.h"
#include "lid_switch.h"
#include "pmu_tpschrome.h"
#include "pwm.h"
#include "pwm_chip.h"
#include "registers.h"
#include "spi.h"
#include "timer.h"
#include "task.h"
#include "util.h"

#define GPIO_KB_INPUT  (GPIO_INPUT | GPIO_PULL_UP | GPIO_INT_BOTH)
#define GPIO_KB_OUTPUT GPIO_ODR_HIGH

/* GPIO signal list.  Must match order from enum gpio_signal. */
const struct gpio_info gpio_list[] = {
	/* Inputs with interrupt handlers are first for efficiency */
	{"KB_PWR_ON_L", GPIO_B, (1<<5),  GPIO_INT_BOTH, power_interrupt},
	{"PP1800_LDO2", GPIO_A, (1<<1),  GPIO_INT_BOTH, power_interrupt},
	{"XPSHOLD",     GPIO_A, (1<<3),  GPIO_INT_RISING, power_interrupt},
	{"CHARGER_INT_L", GPIO_C, (1<<6),  GPIO_INT_FALLING, pmu_irq_handler},
	{"LID_OPEN",    GPIO_C, (1<<13), GPIO_INT_BOTH, lid_interrupt},
	{"SUSPEND_L",   GPIO_C, (1<<7),  GPIO_INT_BOTH, power_interrupt},
	{"SPI1_NSS",    GPIO_A, (1<<4),  GPIO_INT_BOTH | GPIO_PULL_UP,
	 spi_event},
	{"AC_PRESENT",  GPIO_A, (1<<0),  GPIO_INT_BOTH, extpower_interrupt},
	{"KB_IN00",     GPIO_C, (1<<8),  GPIO_KB_INPUT,
	 keyboard_raw_gpio_interrupt},
	{"KB_IN01",     GPIO_C, (1<<9),  GPIO_KB_INPUT,
	 keyboard_raw_gpio_interrupt},
	{"KB_IN02",     GPIO_C, (1<<10), GPIO_KB_INPUT,
	 keyboard_raw_gpio_interrupt},
	{"KB_IN03",     GPIO_C, (1<<11), GPIO_KB_INPUT,
	 keyboard_raw_gpio_interrupt},
	{"KB_IN04",     GPIO_C, (1<<12), GPIO_KB_INPUT,
	 keyboard_raw_gpio_interrupt},
	{"KB_IN05",     GPIO_C, (1<<14), GPIO_KB_INPUT,
	 keyboard_raw_gpio_interrupt},
	{"KB_IN06",     GPIO_C, (1<<15), GPIO_KB_INPUT,
	 keyboard_raw_gpio_interrupt},
	{"KB_IN07",     GPIO_D, (1<<2),  GPIO_KB_INPUT,
	 keyboard_raw_gpio_interrupt},
	/* Other inputs */
	{"WP_L",        GPIO_B, (1<<4),  GPIO_INPUT, NULL},
	/* Outputs */
	{"AP_RESET_L",  GPIO_B, (1<<3),  GPIO_ODR_HIGH, NULL},
	{"CHARGER_EN",  GPIO_B, (1<<2),  GPIO_OUT_LOW, NULL},
	{"EC_INT",      GPIO_B, (1<<9),  GPIO_ODR_HIGH, NULL},
	{"EN_PP1350",   GPIO_H, (1<<1),  GPIO_OUT_LOW, NULL},
	{"EN_PP3300",   GPIO_A, (1<<8),  GPIO_OUT_LOW, NULL},
	{"EN_PP5000",   GPIO_A, (1<<11), GPIO_OUT_LOW, NULL},
	{"ENTERING_RW", GPIO_H, (1<<0),  GPIO_OUT_LOW, NULL},
	{"I2C1_SCL",    GPIO_B, (1<<6),  GPIO_ODR_HIGH, NULL},
	{"I2C1_SDA",    GPIO_B, (1<<7),  GPIO_ODR_HIGH, NULL},
	{"I2C2_SCL",    GPIO_B, (1<<10), GPIO_ODR_HIGH, NULL},
	{"I2C2_SDA",    GPIO_B, (1<<11), GPIO_ODR_HIGH, NULL},
	{"LED_POWER_L", GPIO_A, (1<<2), GPIO_OUT_HIGH, NULL},
	{"PMIC_PWRON",  GPIO_A, (1<<12), GPIO_OUT_LOW, NULL},
	{"PMIC_RESET",  GPIO_A, (1<<15), GPIO_OUT_LOW, NULL},
	{"KB_OUT00",    GPIO_B, (1<<0),  GPIO_KB_OUTPUT, NULL},
	{"KB_OUT01",    GPIO_B, (1<<8),  GPIO_KB_OUTPUT, NULL},
	{"KB_OUT02",    GPIO_B, (1<<12), GPIO_KB_OUTPUT, NULL},
	{"KB_OUT03",    GPIO_B, (1<<13), GPIO_KB_OUTPUT, NULL},
	{"KB_OUT04",    GPIO_B, (1<<14), GPIO_KB_OUTPUT, NULL},
	{"KB_OUT05",    GPIO_B, (1<<15), GPIO_KB_OUTPUT, NULL},
	{"KB_OUT06",    GPIO_C, (1<<0),  GPIO_KB_OUTPUT, NULL},
	{"KB_OUT07",    GPIO_C, (1<<1),  GPIO_KB_OUTPUT, NULL},
	{"KB_OUT08",    GPIO_C, (1<<2),  GPIO_KB_OUTPUT, NULL},
	{"KB_OUT09",    GPIO_B, (1<<1),  GPIO_KB_OUTPUT, NULL},
	{"KB_OUT10",    GPIO_C, (1<<5),  GPIO_KB_OUTPUT, NULL},
	{"KB_OUT11",    GPIO_C, (1<<4),  GPIO_KB_OUTPUT, NULL},
	{"KB_OUT12",    GPIO_A, (1<<13),  GPIO_KB_OUTPUT, NULL},
};
BUILD_ASSERT(ARRAY_SIZE(gpio_list) == GPIO_COUNT);

/* Pins with alternate functions */
const struct gpio_alt_func gpio_alt_funcs[] = {
	{GPIO_A, 0x0004, GPIO_ALT_TIM2,  MODULE_POWER_LED},
	{GPIO_A, 0x00f0, GPIO_ALT_SPI,   MODULE_SPI},
	{GPIO_A, 0x0600, GPIO_ALT_USART, MODULE_UART},
	{GPIO_B, 0x0cc0, GPIO_ALT_I2C,	 MODULE_I2C},
};
const int gpio_alt_funcs_count = ARRAY_SIZE(gpio_alt_funcs);

/* Battery temperature ranges in degrees C */
static const struct battery_info info = {
	.start_charging_min_c = 0,
	.start_charging_max_c = 45,
	.charging_min_c       = 0,
	.charging_max_c       = 60,
	.discharging_min_c    = 0,
	.discharging_max_c    = 100,
};

const struct battery_info *battery_get_info(void)
{
	return &info;
}

/* I2C ports */
const struct i2c_port_t i2c_ports[] = {
	{"master", I2C_PORT_MASTER, 100},
};
const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);

struct keyboard_scan_config keyscan_config = {
	.output_settle_us = 40,
	.debounce_down_us = 6 * MSEC,
	.debounce_up_us = 30 * MSEC,
	.scan_period_us = 1500,
	.min_post_scan_delay_us = 1000,
	.poll_timeout_us = SECOND,
	.actual_key_mask = {
		0x14, 0xff, 0xff, 0xff, 0xff, 0xf5, 0xff,
		0xa4, 0xff, 0xf6, 0x55, 0xfa, 0xc8  /* full set */
	},
};

/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
const struct pwm_t pwm_channels[] = {
	{STM32_TIM(2), STM32_TIM_CH(3),
	 PWM_CONFIG_ACTIVE_LOW, GPIO_LED_POWER_L},
};
BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);

int pmu_board_init(void)
{
	int ver, failure = 0;

	/* Set fast charging timeout to 6 hours*/
	if (!failure)
		failure = pmu_set_fastcharge(TIMEOUT_6HRS);
	/* Enable external gpio CHARGER_EN control */
	if (!failure)
		failure = pmu_enable_ext_control(1);
	/* Disable force charging */
	if (!failure)
		failure = pmu_enable_charger(0);

	/* Set NOITERM bit */
	if (!failure)
		failure = pmu_low_current_charging(1);

	/*
	 * High temperature charging
	 *   termination voltage: 2.1V
	 *   termination current: 100%
	 */
	if (!failure)
		failure = pmu_set_term_voltage(RANGE_T34, TERM_V2100);
	if (!failure)
		failure = pmu_set_term_current(RANGE_T34, TERM_I1000);
	/*
	 * Standard temperature charging
	 *   termination voltage: 2.1V
	 *   termination current: 100%
	 */
	if (!failure)
		failure = pmu_set_term_voltage(RANGE_T23, TERM_V2100);
	if (!failure)
		failure = pmu_set_term_current(RANGE_T23, TERM_I1000);

	/*
	 * Ignore TPSCHROME NTC reading in T40. This is snow board specific
	 * setting. Check:
	 *   http://crosbug.com/p/12221
	 *   http://crosbug.com/p/13171
	 */
	if (!failure)
		failure = pmu_set_term_voltage(RANGE_T40, TERM_V2100);
	if (!failure)
		failure = pmu_set_term_current(RANGE_T40, TERM_I1000);

	/* Workaround init values before ES3 */
	if (pmu_version(&ver) || ver < 3) {
		/* Termination current: 75% */
		if (!failure)
			failure = pmu_set_term_current(RANGE_T34, TERM_I0750);
		if (!failure)
			failure = pmu_set_term_current(RANGE_T23, TERM_I0750);
		if (!failure)
			failure = pmu_set_term_current(RANGE_T40, TERM_I0750);
	}

	return failure ? EC_ERROR_UNKNOWN : EC_SUCCESS;
}