/* Copyright 2015 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.
 */
/* Skylake Chrome Reference Design board-specific configuration */
#include "adc.h"
#include "adc_chip.h"
#include "als.h"
#include "battery.h"
#include "button.h"
#include "charge_manager.h"
#include "charge_state.h"
#include "charger.h"
#include "console.h"
#include "driver/accel_kionix.h"
#include "driver/accel_kxcj9.h"
#include "driver/als_opt3001.h"
#include "driver/gyro_l3gd20h.h"
#include "driver/pmic_tps650830.h"
#include "driver/temp_sensor/tmp432.h"
#include "extpower.h"
#include "fan.h"
#include "gpio.h"
#include "hooks.h"
#include "host_command.h"
#include "i2c.h"
#include "lid_switch.h"
#include "math_util.h"
#include "motion_lid.h"
#include "motion_sense.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 "temp_sensor_chip.h"
#include "thermal.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)

#define TPS650830_I2C_ADDR TPS650830_I2C_ADDR1

/* 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);
}

#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, "RSMRST_N_PWRGD"},
	{GPIO_PCH_SLP_S0_L,      1, "SLP_S0_DEASSERTED"},
	{GPIO_PCH_SLP_S3_L,      1, "SLP_S3_DEASSERTED"},
	{GPIO_PCH_SLP_S4_L,      1, "SLP_S4_DEASSERTED"},
	{GPIO_PCH_SLP_SUS_L,     1, "SLP_SUS_DEASSERTED"},
};
BUILD_ASSERT(ARRAY_SIZE(power_signal_list) == POWER_SIGNAL_COUNT);

/* VBUS_MUL */
#define VBUS_MUL 30123
/* VBUS_DIV 10bit ADC */
#define VBUS_DIV 1024
/* VBUS_SHIFT */
#define VBUS_SHIFT 116

/* ADC channels */
const struct adc_t adc_channels[] = {
	/* read voltage in battery thermistor as battery present */
	[ADC_BATT_PRESENT] = {"BATTPRES", 3300, 1024, 0, 0},
	/* Vbus sensing. Converted to mV, full ADC is equivalent to 30V. */
	[ADC_VBUS] = {"VBUS", VBUS_MUL, VBUS_DIV, VBUS_SHIFT, 1},
	/* Adapter current output or battery discharging current */
	[ADC_AMON_BMON] = {"AMON_BMON", 25000, 3072, 0, 3},
	/*
	 * System current consumption. Converted to mV,
	 * full ADC is equivalent to 100W
	 */
	[ADC_PSYS] = {"PSYS", 3000, 1024, 0, 4},

};
BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);

const struct i2c_port_t i2c_ports[]  = {
	{"pmic",     MEC1322_I2C0_0, 400,  GPIO_I2C0_0_SCL, GPIO_I2C0_0_SDA},
	{"muxes",    MEC1322_I2C0_1, 400,  GPIO_I2C0_1_SCL, GPIO_I2C0_1_SDA},
	{"pd_mcu",   MEC1322_I2C1,   500,  GPIO_I2C1_SCL,   GPIO_I2C1_SDA},
	{"sensors",  MEC1322_I2C2,   400,  GPIO_I2C2_SCL,   GPIO_I2C2_SDA  },
	{"batt",     MEC1322_I2C3,   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},
};

/* Physical fans. These are logically separate from pwm_channels. */
const struct fan_t fans[] = {
	{.flags = FAN_USE_RPM_MODE,
	 .rpm_min = 1000,
	 .rpm_start = 1000,
	 .rpm_max = 5200,
	 .ch = 1,
	 .pgood_gpio = -1,
	 .enable_gpio = GPIO_FAN_PWR_DIS_L,
	},
};
BUILD_ASSERT(ARRAY_SIZE(fans) == CONFIG_FANS);

/* SPI devices */
const struct spi_device_t spi_devices[] = {
	{ CONFIG_SPI_FLASH_PORT, 0, GPIO_PVT_CS0},
};
const unsigned int spi_devices_used = ARRAY_SIZE(spi_devices);

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);
}

#ifdef HAS_TASK_MOTIONSENSE
/* Four Motion sensors */
/* kxcj9 mutex and local/private data*/
static struct mutex g_kxcj9_mutex[2];
struct kionix_accel_data g_kxcj9_data[2] = {
	{.variant = KXCJ9},
	{.variant = KXCJ9},
};

#ifdef CONFIG_GYRO_L3GD20H
/* Gyro sensor */
/* l3gd20h mutex and local/private data*/
static struct mutex g_l3gd20h_mutex;
struct l3gd20_data g_l3gd20h_data;
#endif

/* 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)}
};

const matrix_3x3_t lid_standard_ref = {
	{FLOAT_TO_FP(-1), 0,  0},
	{ 0, FLOAT_TO_FP(1),  0},
	{ 0,  0, FLOAT_TO_FP(-1)}
};

struct motion_sensor_t motion_sensors[] = {
	{.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_kxcj9_mutex[0],
	 .drv_data = &g_kxcj9_data[0],
	 .port = I2C_PORT_ACCEL,
	 .addr = KXCJ9_ADDR1,
	 .rot_standard_ref = &base_standard_ref,
	 .default_range = 2,  /* g, enough for laptop. */
	 .config = {
		 /* AP: by default shutdown all sensors */
		 [SENSOR_CONFIG_AP] = {
			 .odr = 0,
			 .ec_rate = 0,
		 },
		 /* EC use accel for angle detection */
		 [SENSOR_CONFIG_EC_S0] = {
			 .odr = 100000 | 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
		 },
	 },
	},
	{.name = "Lid Accel",
	 .active_mask = SENSOR_ACTIVE_S0,
	 .chip = MOTIONSENSE_CHIP_KXCJ9,
	 .type = MOTIONSENSE_TYPE_ACCEL,
	 .location = MOTIONSENSE_LOC_LID,
	 .drv = &kionix_accel_drv,
	 .mutex = &g_kxcj9_mutex[1],
	 .drv_data = &g_kxcj9_data[1],
	 .port = I2C_PORT_ACCEL,
	 .addr = KXCJ9_ADDR0,
	 .rot_standard_ref = &lid_standard_ref,
	 .default_range = 2,  /* g, enough for laptop. */
	 .config = {
		 /* AP: by default shutdown all sensors */
		 [SENSOR_CONFIG_AP] = {
			 .odr = 0,
			 .ec_rate = 0,
		 },
		 /* EC use accel for angle detection */
		 [SENSOR_CONFIG_EC_S0] = {
			 .odr = 100000 | 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
		 },
	 },
	},
#ifdef CONFIG_GYRO_L3GD20H
	{.name = "Lid Gyro",
	 .active_mask = SENSOR_ACTIVE_S0,
	 .chip = MOTIONSENSE_CHIP_L3GD20H,
	 .type = MOTIONSENSE_TYPE_GYRO,
	 .location = MOTIONSENSE_LOC_LID,
	 .drv = &l3gd20h_drv,
	 .mutex = &g_l3gd20h_mutex,
	 .drv_data = &g_l3gd20h_data,
	 .port = I2C_PORT_GYRO,
	 .addr = L3GD20_ADDR1,
	 .rot_standard_ref = NULL,
	 .default_range = 2000,  /* DPS */
	 .config = {
		/* AP: by default shutdown all sensors */
		[SENSOR_CONFIG_AP] = {
			.odr = 0,
			.ec_rate = 0,
		},
		[SENSOR_CONFIG_EC_S0] = {
			.odr = 0,
			.ec_rate = 0,
		},
		/* unused */
		[SENSOR_CONFIG_EC_S3] = {
			.odr = 0,
			.ec_rate = 0,
		},
		[SENSOR_CONFIG_EC_S5] = {
			.odr = 0,
			.ec_rate = 0,
		},
	 },
	},
#endif
};
const unsigned int motion_sensor_count = ARRAY_SIZE(motion_sensors);
#endif

/*
 * 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[] = {
	{"TI", opt3001_init, opt3001_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},
};
BUILD_ASSERT(ARRAY_SIZE(buttons) == CONFIG_BUTTON_COUNT);

/* Initialize PMIC */
#define I2C_PMIC_READ(reg, data) \
		i2c_read8(I2C_PORT_PMIC, TPS650830_I2C_ADDR, (reg), (data))

#define I2C_PMIC_WRITE(reg, data) \
		i2c_write8(I2C_PORT_PMIC, TPS650830_I2C_ADDR, (reg), (data))

static void board_pmic_init(void)
{
	int ret;
	int data;
	int error_count = 0;

	/* No need to re-init PMIC since settings are sticky across sysjump */
	if (system_jumped_to_this_image())
		return;

	/* Read vendor ID */
	while (1) {
		ret = I2C_PMIC_READ(TPS650830_REG_VENDORID, &data);
		if (!ret && data == TPS650830_VENDOR_ID) {
			break;
		} else if (error_count > 5)
			goto pmic_error;

		error_count++;
	}

	/*
	 * VCCIOCNT register setting
	 * [6] : CSDECAYEN
	 * otherbits: default
	 */
	ret = I2C_PMIC_WRITE(TPS650830_REG_VCCIOCNT, 0x4A);
	if (ret)
		goto pmic_error;

	/*
	 * VRMODECTRL:
	 * [4] : VCCIOLPM clear
	 * otherbits: default
	 */
	ret = I2C_PMIC_WRITE(TPS650830_REG_VRMODECTRL, 0x2F);
	if (ret)
		goto pmic_error;

	/*
	 * PGMASK1 : Exclude VCCIO from Power Good Tree
	 * [7] : MVCCIOPG clear
	 * otherbits: default
	 */
	ret = I2C_PMIC_WRITE(TPS650830_REG_PGMASK1, 0x80);
	if (ret)
		goto pmic_error;

	/*
	 * PWFAULT_MASK1 Register settings
	 * [7] : 1b V4 Power Fault Masked
	 * [4] : 1b V7 Power Fault Masked
	 * [2] : 1b V9 Power Fault Masked
	 * [0] : 1b V13 Power Fault Masked
	 */
	ret = I2C_PMIC_WRITE(TPS650830_REG_PWFAULT_MASK1, 0x95);
	if (ret)
		goto pmic_error;

	/*
	 * Discharge control 4 register configuration
	 * [7:6] : 00b Reserved
	 * [5:4] : 01b V3.3S discharge resistance (V6S), 100 Ohm
	 * [3:2] : 01b V18S discharge resistance (V8S), 100 Ohm
	 * [1:0] : 01b V100S discharge resistance (V11S), 100 Ohm
	 */
	ret = I2C_PMIC_WRITE(TPS650830_REG_DISCHCNT4, 0x15);
	if (ret)
		goto pmic_error;

	/*
	 * Discharge control 3 register configuration
	 * [7:6] : 01b V1.8U_2.5U discharge resistance (V9), 100 Ohm
	 * [5:4] : 01b V1.2U discharge resistance (V10), 100 Ohm
	 * [3:2] : 01b V100A discharge resistance (V11), 100 Ohm
	 * [1:0] : 01b V085A discharge resistance (V12), 100 Ohm
	 */
	ret = I2C_PMIC_WRITE(TPS650830_REG_DISCHCNT3, 0x55);
	if (ret)
		goto pmic_error;

	/*
	 * Discharge control 2 register configuration
	 * [7:6] : 01b V5ADS3 discharge resistance (V5), 100 Ohm
	 * [5:4] : 01b V33A_DSW discharge resistance (V6), 100 Ohm
	 * [3:2] : 01b V33PCH discharge resistance (V7), 100 Ohm
	 * [1:0] : 01b V18A discharge resistance (V8), 100 Ohm
	 */
	ret = I2C_PMIC_WRITE(TPS650830_REG_DISCHCNT2, 0x55);
	if (ret)
		goto pmic_error;

	/*
	 * Discharge control 1 register configuration
	 * [7:2] : 00b Reserved
	 * [1:0] : 01b VCCIO discharge resistance (V4), 100 Ohm
	 */
	ret = I2C_PMIC_WRITE(TPS650830_REG_DISCHCNT1, 0x01);
	if (ret)
		goto pmic_error;

	/*
	 * Increase Voltage
	 *  [7:0] : 0x2a default
	 *  [5:4] : 10b default
	 *  [5:4] : 01b 5.1V (0x1a)
	 */
	ret = I2C_PMIC_WRITE(TPS650830_REG_V5ADS3CNT, 0x1a);
	if (ret)
		goto pmic_error;

	/*
	 * PBCONFIG Register configuration
	 *   [7] :      1b Power button debounce, 0ms (no debounce)
	 *   [6] :      0b Power button reset timer logic, no action (default)
	 * [5:0] : 011111b Force an Emergency reset time, 31s (default)
	 */
	ret = I2C_PMIC_WRITE(TPS650830_REG_PBCONFIG, 0x9F);
	if (ret)
		goto pmic_error;

	CPRINTS("PMIC initialization done");
	return;

pmic_error:
	CPRINTS("PMIC initialization failed");
}
DECLARE_HOOK(HOOK_INIT, board_pmic_init, HOOK_PRIO_INIT_I2C + 1);

/* 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);

	/* Provide AC status to the PCH */
	gpio_set_level(GPIO_PCH_ACOK, extpower_is_present());
}
DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);

/**
 * Buffer the AC present GPIO to the PCH.
 */
static void board_extpower(void)
{
	gpio_set_level(GPIO_PCH_ACOK, extpower_is_present());
}
DECLARE_HOOK(HOOK_AC_CHANGE, board_extpower, 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 touchpad on chipset startup so that it can wake the system */
static void board_chipset_startup(void)
{
	gpio_set_level(GPIO_ENABLE_TOUCHPAD, 1);
}
DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup,
	     HOOK_PRIO_DEFAULT);

/* Disable touchpad on chipset shutdown as it is no longer useful */
static void board_chipset_shutdown(void)
{
	gpio_set_level(GPIO_ENABLE_TOUCHPAD, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown,
	     HOOK_PRIO_DEFAULT);

/* Make the pmic re-sequence the power rails under these conditions. */
#define PMIC_RESET_FLAGS \
	(RESET_FLAG_WATCHDOG | RESET_FLAG_SOFT | RESET_FLAG_HARD)
static void board_handle_reboot(void)
{
	int flags;

	if (system_jumped_to_this_image())
		return;

	/* Interrogate current reset flags from previous reboot. */
	flags = system_get_reset_flags();

	if (!(flags & PMIC_RESET_FLAGS))
		return;

	/* Preserve AP off request. */
	if (flags & RESET_FLAG_AP_OFF)
		chip_save_reset_flags(RESET_FLAG_AP_OFF);

	ccprintf("Restarting system with PMIC.\n");
	/* Flush console */
	cflush();

	/* Bring down all rails but RTC rail (including EC power). */
	gpio_set_level(GPIO_LDO_EN, 1);
	while (1)
		; /* wait here */
}
DECLARE_HOOK(HOOK_INIT, board_handle_reboot, HOOK_PRIO_FIRST);

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)
		;
}