/* Copyright 2016 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.
 */

/* Amenia board-specific configuration */

#include "adc_chip.h"
#include "als.h"
#include "button.h"
#include "charge_manager.h"
#include "charge_state.h"
#include "charger.h"
#include "chipset.h"
#include "console.h"
#include "driver/als_isl29035.h"
#include "driver/accel_kionix.h"
#include "driver/accel_kxcj9.h"
#include "driver/accelgyro_bmi160.h"
#include "driver/temp_sensor/tmp432.h"
#include "extpower.h"
#include "gpio.h"
#include "hooks.h"
#include "host_command.h"
#include "i2c.h"
#include "keyboard_scan.h"
#include "lid_switch.h"
#include "math_util.h"
#include "motion_sense.h"
#include "motion_lid.h"
#include "pi3usb9281.h"
#include "power.h"
#include "power_button.h"
#include "spi.h"
#include "switch.h"
#include "system.h"
#include "task.h"
#include "temp_sensor.h"
#include "timer.h"
#include "uart.h"
#include "usb_charge.h"
#include "usb_mux.h"
#include "usb_pd.h"
#include "usb_pd_tcpm.h"
#include "util.h"

#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args)

/* Exchange status with PD MCU. */
static void pd_mcu_interrupt(enum gpio_signal signal)
{
#ifdef HAS_TASK_PDCMD
	/* Exchange status with PD MCU to determine interrupt cause */
	host_command_pd_send_status(0);
#endif
}

void vbus0_evt(enum gpio_signal signal)
{
	/* VBUS present GPIO is inverted */
	usb_charger_vbus_change(0, !gpio_get_level(signal));
	task_wake(TASK_ID_PD_C0);
}

void vbus1_evt(enum gpio_signal signal)
{
	/* VBUS present GPIO is inverted */
	usb_charger_vbus_change(1, !gpio_get_level(signal));
	task_wake(TASK_ID_PD_C1);
}

void usb0_evt(enum gpio_signal signal)
{
	task_set_event(TASK_ID_USB_CHG_P0, USB_CHG_EVENT_BC12, 0);
}

void usb1_evt(enum gpio_signal signal)
{
	task_set_event(TASK_ID_USB_CHG_P1, USB_CHG_EVENT_BC12, 0);
}

/*
 * enable_input_devices() is called by the tablet_mode ISR, but changes the
 * state of GPIOs, so its definition must reside after including gpio_list.
 */
static void enable_input_devices(void);

void tablet_mode_interrupt(enum gpio_signal signal)
{
	hook_call_deferred(enable_input_devices, 0);
}

#include "gpio_list.h"

/* power signal list.  Must match order of enum power_signal. */
const struct power_signal_info power_signal_list[] = {
	{GPIO_RSMRST_L_PGOOD,    1, "PMIC_RSMRST_N"},
	{GPIO_ALL_SYS_PGOOD,     1, "ALL_SYS_PWRGD"},
	{GPIO_PCH_SLP_S0_L,      1, "PMU_SLP_S0_N"},
	{GPIO_PCH_SLP_S3_L,      1, "PMU_SLP_S3_N"},
	{GPIO_PCH_SLP_S4_L,      1, "PMU_SLP_S4_N"},
	{GPIO_PCH_SUSPWRDNACK,   1, "SUSPWRDNACK"},
	{GPIO_PCH_SUS_STAT_L,    1, "PMU_SUS_STAT_N"},
};
BUILD_ASSERT(ARRAY_SIZE(power_signal_list) == POWER_SIGNAL_COUNT);

/* ADC channels */
const struct adc_t adc_channels[] = {
	/* Vbus sensing. Converted to mV, full ADC is equivalent to 28.16V. */
	[ADC_VBUS] = {"VBUS", NPCX_ADC_CH1, 28160, ADC_READ_MAX+1, 0},
	/* Adapter current output or battery discharging current */
	[ADC_AMON_BMON] = {"AMON_BMON", NPCX_ADC_CH4, 55000, 6144, 0},
	/* System current consumption */
	[ADC_PSYS] = {"PSYS", NPCX_ADC_CH3, 1, 1, 0},
};
BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);

const struct i2c_port_t i2c_ports[]  = {
	{"pmic",    NPCX_I2C_PORT0_0, 400, GPIO_I2C0_0_SCL, GPIO_I2C0_0_SDA},
	{"muxes",   NPCX_I2C_PORT0_1, 400, GPIO_I2C0_1_SCL, GPIO_I2C0_1_SDA},
	{"pd_mcu",  NPCX_I2C_PORT1,   400, GPIO_I2C1_SCL,   GPIO_I2C1_SDA},
	{"sensors", NPCX_I2C_PORT2,   400, GPIO_I2C2_SCL,   GPIO_I2C2_SDA},
	{"batt",    NPCX_I2C_PORT3,   100, GPIO_I2C3_SCL,   GPIO_I2C3_SDA},
};
const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);

const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_COUNT] = {
	{I2C_PORT_TCPC, CONFIG_TCPC_I2C_BASE_ADDR},
	{I2C_PORT_TCPC, CONFIG_TCPC_I2C_BASE_ADDR + 2},
};

const enum gpio_signal hibernate_wake_pins[] = {
	GPIO_AC_PRESENT,
	GPIO_LID_OPEN,
	GPIO_POWER_BUTTON_L,
};

const int hibernate_wake_pins_used = ARRAY_SIZE(hibernate_wake_pins);

struct pi3usb9281_config pi3usb9281_chips[] = {
	{
		.i2c_port = I2C_PORT_USB_CHARGER_1,
		.mux_lock = NULL,
	},
	{
		.i2c_port = I2C_PORT_USB_CHARGER_2,
		.mux_lock = NULL,
	},
};
BUILD_ASSERT(ARRAY_SIZE(pi3usb9281_chips) ==
	     CONFIG_USB_SWITCH_PI3USB9281_CHIP_COUNT);

struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_COUNT] = {
	{
		.port_addr = 0xa8,
		.driver = &pi3usb30532_usb_mux_driver,
	},
	{
		.port_addr = 0xaa,
		.driver = &pi3usb30532_usb_mux_driver,
	}
};

/**
 * Reset PD MCU
 */
void board_reset_pd_mcu(void)
{
	gpio_set_level(GPIO_PD_RST_L, 0);
	usleep(100);
	gpio_set_level(GPIO_PD_RST_L, 1);
}

/*
 * Temperature sensors data; must be in same order as enum temp_sensor_id.
 * Sensor index and name must match those present in coreboot:
 *     src/mainboard/google/${board}/acpi/dptf.asl
 */
const struct temp_sensor_t temp_sensors[] = {
	{"TMP432_Internal", TEMP_SENSOR_TYPE_BOARD, tmp432_get_val,
		TMP432_IDX_LOCAL, 4},
	{"TMP432_Sensor_1", TEMP_SENSOR_TYPE_BOARD, tmp432_get_val,
		TMP432_IDX_REMOTE1, 4},
	{"TMP432_Sensor_2", TEMP_SENSOR_TYPE_BOARD, tmp432_get_val,
		TMP432_IDX_REMOTE2, 4},
	{"Battery", TEMP_SENSOR_TYPE_BATTERY, charge_temp_sensor_get_val,
		0, 4},
};
BUILD_ASSERT(ARRAY_SIZE(temp_sensors) == TEMP_SENSOR_COUNT);

/*
 * Thermal limits for each temp sensor.  All temps are in degrees K.  Must be in
 * same order as enum temp_sensor_id.  To always ignore any temp, use 0.
 */
struct ec_thermal_config thermal_params[] = {
	/* {Twarn, Thigh, Thalt}, fan_off, fan_max */
	{{0, 0, 0}, 0, 0},	/* TMP432_Internal */
	{{0, 0, 0}, 0, 0},	/* TMP432_Sensor_1 */
	{{0, 0, 0}, 0, 0},	/* TMP432_Sensor_2 */
	{{0, 0, 0}, 0, 0},	/* Battery */
};
BUILD_ASSERT(ARRAY_SIZE(thermal_params) == TEMP_SENSOR_COUNT);

/* ALS instances. Must be in same order as enum als_id. */
struct als_t als[] = {
	{"ISL", isl29035_init, isl29035_read_lux, 5},
};
BUILD_ASSERT(ARRAY_SIZE(als) == ALS_COUNT);

const struct button_config buttons[CONFIG_BUTTON_COUNT] = {
	{"Volume Down", KEYBOARD_BUTTON_VOLUME_DOWN, GPIO_VOLUME_DOWN_L,
	 30 * MSEC, 0},
	{"Volume Up", KEYBOARD_BUTTON_VOLUME_UP, GPIO_VOLUME_UP_L,
	 30 * MSEC, 0},
};

/* Initialize board. */
static void board_init(void)
{
	/* Enable PD MCU interrupt */
	gpio_enable_interrupt(GPIO_PD_MCU_INT);

	/* Enable VBUS interrupt */
	gpio_enable_interrupt(GPIO_USB_C0_VBUS_WAKE_L);
	gpio_enable_interrupt(GPIO_USB_C1_VBUS_WAKE_L);

	/* Enable pericom BC1.2 interrupts */
	gpio_enable_interrupt(GPIO_USB_C0_BC12_INT_L);
	gpio_enable_interrupt(GPIO_USB_C1_BC12_INT_L);

	/* Enable tablet mode interrupt for input device enable */
	gpio_enable_interrupt(GPIO_TABLET_MODE_L);
}
DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);

/**
 * Set active charge port -- only one port can be active at a time.
 *
 * @param charge_port   Charge port to enable.
 *
 * Returns EC_SUCCESS if charge port is accepted and made active,
 * EC_ERROR_* otherwise.
 */
int board_set_active_charge_port(int charge_port)
{
	/* charge port is a realy physical port */
	int is_real_port = (charge_port >= 0 &&
			    charge_port < CONFIG_USB_PD_PORT_COUNT);
	/* check if we are source vbus on that port */
	int source = gpio_get_level(charge_port == 0 ? GPIO_USB_C0_5V_EN :
						       GPIO_USB_C1_5V_EN);

	if (is_real_port && source) {
		CPRINTS("Skip enable p%d", charge_port);
		return EC_ERROR_INVAL;
	}

	CPRINTS("New chg p%d", charge_port);

	if (charge_port == CHARGE_PORT_NONE) {
		/* Disable both ports */
		gpio_set_level(GPIO_USB_C0_CHARGE_EN_L, 1);
		gpio_set_level(GPIO_USB_C1_CHARGE_EN_L, 1);
	} else {
		/* Make sure non-charging port is disabled */
		gpio_set_level(charge_port ? GPIO_USB_C0_CHARGE_EN_L :
					     GPIO_USB_C1_CHARGE_EN_L, 1);
		/* Enable charging port */
		gpio_set_level(charge_port ? GPIO_USB_C1_CHARGE_EN_L :
					     GPIO_USB_C0_CHARGE_EN_L, 0);
	}

	return EC_SUCCESS;
}

/**
 * Set the charge limit based upon desired maximum.
 *
 * @param charge_ma     Desired charge limit (mA).
 */
void board_set_charge_limit(int charge_ma)
{
	charge_set_input_current_limit(MAX(charge_ma,
					   CONFIG_CHARGER_INPUT_CURRENT));
}

/* Enable or disable input devices, based upon chipset state and tablet mode */
static void enable_input_devices(void)
{
	int kb_enable = 1;
	int tp_enable = 1;

	/* Disable both TP and KB in tablet mode */
	if (!gpio_get_level(GPIO_TABLET_MODE_L))
		kb_enable = tp_enable = 0;
	/* Disable TP if chipset is off */
	else if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
		tp_enable = 0;

	keyboard_scan_enable(kb_enable, KB_SCAN_DISABLE_LID_ANGLE);
	gpio_set_level(GPIO_ENABLE_TOUCHPAD, tp_enable);
}
DECLARE_DEFERRED(enable_input_devices);

/* Called on AP S5 -> S3 transition */
static void board_chipset_startup(void)
{
	hook_call_deferred(enable_input_devices, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup, HOOK_PRIO_DEFAULT);

/* Called on AP S3 -> S5 transition */
static void board_chipset_shutdown(void)
{
	hook_call_deferred(enable_input_devices, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown, HOOK_PRIO_DEFAULT);

void board_hibernate_late(void)
{
	int i;
	const uint32_t hibernate_pins[][2] = {
		/* Turn off LEDs in hibernate */
		{GPIO_CHARGE_LED_1, GPIO_OUTPUT | GPIO_LOW},
		{GPIO_CHARGE_LED_2, GPIO_OUTPUT | GPIO_LOW},
		/*
		 * Set PD wake low so that it toggles high to generate a wake
		 * event once we leave hibernate.
		 */
		{GPIO_USB_PD_WAKE, GPIO_OUTPUT | GPIO_LOW},
		/*
		 * In hibernate, this pin connected to GND. Set it to output
		 * low to eliminate the current caused by internal pull-up.
		 */
		{GPIO_PLATFORM_EC_PROCHOT, GPIO_OUTPUT | GPIO_LOW},
		/*
		 * Leave USB-C charging enabled in hibernate, in order to
		 * allow wake-on-plug. 5V enable must be pulled low.
		 */
		{GPIO_USB_C0_5V_EN,       GPIO_INPUT  | GPIO_PULL_DOWN},
		{GPIO_USB_C0_CHARGE_EN_L, GPIO_OUTPUT | GPIO_LOW},
		{GPIO_USB_C1_5V_EN,       GPIO_INPUT  | GPIO_PULL_DOWN},
		{GPIO_USB_C1_CHARGE_EN_L, GPIO_OUTPUT | GPIO_LOW},
	};

	/* Change GPIOs' state in hibernate for better power consumption */
	for (i = 0; i < ARRAY_SIZE(hibernate_pins); ++i)
		gpio_set_flags(hibernate_pins[i][0], hibernate_pins[i][1]);

	gpio_config_module(MODULE_KEYBOARD_SCAN, 0);

	/*
	 * Calling gpio_config_module sets disabled alternate function pins to
	 * GPIO_INPUT.  But to prevent keypresses causing leakage currents
	 * while hibernating we want to enable GPIO_PULL_UP as well.
	 */
	gpio_set_flags_by_mask(0x2, 0x03, GPIO_INPUT | GPIO_PULL_UP);
	gpio_set_flags_by_mask(0x1, 0xFF, GPIO_INPUT | GPIO_PULL_UP);
	gpio_set_flags_by_mask(0x0, 0xE0, GPIO_INPUT | GPIO_PULL_UP);
}

/* Motion sensors */
/* Mutexes */
static struct mutex g_lid_mutex;
static struct mutex g_base_mutex;

/* Matrix to rotate accelrator into standard reference frame */
const matrix_3x3_t base_standard_ref = {
	{ 0,  FLOAT_TO_FP(1),  0},
	{ FLOAT_TO_FP(-1), 0,  0},
	{ 0,  0,  FLOAT_TO_FP(1)}
};

/* KXCJ9 private data */
struct kionix_accel_data g_kxcj9_data = {
	.variant = KXCJ9,
};

struct motion_sensor_t motion_sensors[] = {
	/*
	 * Note: bmi160: supports accelerometer and gyro sensor
	 * Requirement: accelerometer sensor must init before gyro sensor
	 * DO NOT change the order of the following table.
	 */
	[LID_ACCEL] = {
	 .name = "Lid Accel",
	 .active_mask = SENSOR_ACTIVE_S0,
	 .chip = MOTIONSENSE_CHIP_BMI160,
	 .type = MOTIONSENSE_TYPE_ACCEL,
	 .location = MOTIONSENSE_LOC_LID,
	 .drv = &bmi160_drv,
	 .mutex = &g_lid_mutex,
	 .drv_data = &g_bmi160_data,
	 .port = I2C_PORT_ACCEL,
	 .addr = BMI160_ADDR0,
	 .rot_standard_ref = NULL, /* Identity matrix. */
	 .default_range = 2,  /* g, enough for laptop. */
	 .config = {
		 /* AP: by default use EC settings */
		 [SENSOR_CONFIG_AP] = {
			 .odr = 10000 | ROUND_UP_FLAG,
			 .ec_rate = 100 * MSEC,
		 },
		 /* EC use accel for angle detection */
		 [SENSOR_CONFIG_EC_S0] = {
			 .odr = 10000 | ROUND_UP_FLAG,
			 .ec_rate = 100 * MSEC,
		 },
		 /* Sensor off in S3/S5 */
		 [SENSOR_CONFIG_EC_S3] = {
			 .odr = 0,
			 .ec_rate = 0
		 },
		 /* Sensor off in S3/S5 */
		 [SENSOR_CONFIG_EC_S5] = {
			 .odr = 0,
			 .ec_rate = 0
		 },
	 },
	},

	[LID_GYRO] = {
	 .name = "Lid Gyro",
	 .active_mask = SENSOR_ACTIVE_S0,
	 .chip = MOTIONSENSE_CHIP_BMI160,
	 .type = MOTIONSENSE_TYPE_GYRO,
	 .location = MOTIONSENSE_LOC_LID,
	 .drv = &bmi160_drv,
	 .mutex = &g_lid_mutex,
	 .drv_data = &g_bmi160_data,
	 .port = I2C_PORT_ACCEL,
	 .addr = BMI160_ADDR0,
	 .default_range = 1000, /* dps */
	 .rot_standard_ref = NULL, /* Identity Matrix. */
	 .config = {
		 /* AP: by default shutdown all sensors */
		 [SENSOR_CONFIG_AP] = {
			 .odr = 0,
			 .ec_rate = 0,
		 },
		 /* EC does not need in S0 */
		 [SENSOR_CONFIG_EC_S0] = {
			 .odr = 0,
			 .ec_rate = 0,
		 },
		 /* Sensor off in S3/S5 */
		 [SENSOR_CONFIG_EC_S3] = {
			 .odr = 0,
			 .ec_rate = 0,
		 },
		 /* Sensor off in S3/S5 */
		 [SENSOR_CONFIG_EC_S5] = {
			 .odr = 0,
			 .ec_rate = 0,
		 },
	 },
	},

	[BASE_ACCEL] = {
	 .name = "Base Accel",
	 .active_mask = SENSOR_ACTIVE_S0,
	 .chip = MOTIONSENSE_CHIP_KXCJ9,
	 .type = MOTIONSENSE_TYPE_ACCEL,
	 .location = MOTIONSENSE_LOC_BASE,
	 .drv = &kionix_accel_drv,
	 .mutex = &g_base_mutex,
	 .drv_data = &g_kxcj9_data,
	 .port = I2C_PORT_ACCEL,
	 .addr = KXCJ9_ADDR1,
	 .rot_standard_ref = &base_standard_ref, /* Identity matrix. */
	 .default_range = 2, /* g, enough for laptop. */
	 .config = {
		/* AP: by default use EC settings */
		[SENSOR_CONFIG_AP] = {
			.odr = 10000 | ROUND_UP_FLAG,
			.ec_rate = 100 * MSEC,
		},
		/* EC use accel for angle detection */
		[SENSOR_CONFIG_EC_S0] = {
			.odr = 10000 | ROUND_UP_FLAG,
			.ec_rate = 100 * MSEC,
		},
		/* unused */
		[SENSOR_CONFIG_EC_S3] = {
			.odr = 0,
			.ec_rate = 0,
		},
		[SENSOR_CONFIG_EC_S5] = {
			.odr = 0,
			.ec_rate = 0,
		},
	 },
	},
};
const unsigned int motion_sensor_count = ARRAY_SIZE(motion_sensors);

void board_hibernate(void)
{
	CPRINTS("Enter Pseudo G3");

	/*
	 * Clean up the UART buffer and prevent any unwanted garbage characters
	 * before power off and also ensure above debug message is printed.
	 */
	cflush();

	gpio_set_level(GPIO_G3_SLEEP_EN, 1);

	/* Power to EC should shut down now */
	while (1)
		;
}