text: /* Copyright 2018 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.
   */
  
  /* Nocturne board-specific configuration */
  
  #include "adc_chip.h"
  #include "button.h"
  #include "charge_manager.h"
  #include "charge_state.h"
  #include "charge_state_v2.h"
  #include "chipset.h"
  #include "common.h"
  #include "console.h"
  #include "compile_time_macros.h"
  #include "driver/accelgyro_bmi_common.h"
  #include "driver/als_opt3001.h"
  #include "driver/charger/isl923x.h"
  #include "driver/ppc/sn5s330.h"
  #include "driver/sync.h"
  #include "driver/tcpm/ps8xxx.h"
  #include "driver/temp_sensor/bd99992gw.h"
  #include "ec_commands.h"
  #include "extpower.h"
  #include "gpio.h"
  #include "hooks.h"
  #include "i2c.h"
  #include "lid_switch.h"
  #include "lpc.h"
  #include "mkbp_event.h"
  #include "motion_sense.h"
  #include "power.h"
  #include "power_button.h"
  #include "pwm.h"
  #include "pwm_chip.h"
  #include "registers.h"
  #include "system.h"
  #include "system_chip.h"
  #include "switch.h"
  #include "task.h"
  #include "tcpci.h"
  #include "temp_sensor.h"
  #include "usb_mux.h"
  #include "usb_pd_tcpm.h"
  #include "usbc_ppc.h"
  #include "util.h"
  
  #define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
  #define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args)
  
  static void tcpc_alert_event(enum gpio_signal s)
  {
  	int port = -1;
  
  	switch (s) {
  	case GPIO_USB_C0_PD_INT_ODL:
  		port = 0;
  		break;
  	case GPIO_USB_C1_PD_INT_ODL:
  		port = 1;
  		break;
  	default:
  		return;
  	}
  
  	schedule_deferred_pd_interrupt(port);
  }
  
  /*
   * Nocturne shares the TCPC Alert# line with the TI SN5S330's interrupt line.
   * Therefore, we need to also check on that part.
   */
  static void usb_c_interrupt(enum gpio_signal s)
  {
  	int port = (s == GPIO_USB_C0_PD_INT_ODL) ? 0 : 1;
  
  	tcpc_alert_event(s);
  	sn5s330_interrupt(port);
  }
  
  static void board_connect_c0_sbu_deferred(void)
  {
  	/*
  	 * If CCD_MODE_ODL asserts, it means there's a debug accessory connected
  	 * and we should enable the SBU FETs.
  	 */
  	ppc_set_sbu(0, 1);
  }
  DECLARE_DEFERRED(board_connect_c0_sbu_deferred);
  
  static void board_connect_c0_sbu(enum gpio_signal s)
  {
  	hook_call_deferred(&board_connect_c0_sbu_deferred_data, 0);
  }
  
  #include "gpio_list.h"
  
  const enum gpio_signal hibernate_wake_pins[] = {
  	GPIO_LID_OPEN,
  	GPIO_AC_PRESENT,
  	GPIO_POWER_BUTTON_L,
  };
  const int hibernate_wake_pins_used =  ARRAY_SIZE(hibernate_wake_pins);
  
  const struct adc_t adc_channels[] = {
  	[ADC_BASE_ATTACH] = {
  		"BASE ATTACH", NPCX_ADC_CH0, ADC_MAX_VOLT, ADC_READ_MAX + 1, 0
  	},
  
  	[ADC_BASE_DETACH] = {
  		"BASE DETACH", NPCX_ADC_CH1, ADC_MAX_VOLT, ADC_READ_MAX + 1, 0
  	},
  };
  
  /* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
  const struct pwm_t pwm_channels[] = {
  	[PWM_CH_DB0_LED_RED] =   { 3, PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
  				   986 },
  	[PWM_CH_DB0_LED_GREEN] = { 0, PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
  				   986 },
  	[PWM_CH_DB0_LED_BLUE] =  { 2, PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
  				   986 },
  	[PWM_CH_DB1_LED_RED] =   { 7, PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
  				   986 },
  	[PWM_CH_DB1_LED_GREEN] = { 5, PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
  				   986 },
  	[PWM_CH_DB1_LED_BLUE] =  { 6, PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
  				   986 },
  };
  BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
  
  /* I2C port map */
  const struct i2c_port_t i2c_ports[] = {
  	{
  		"battery", I2C_PORT_BATTERY, 100, GPIO_EC_I2C4_BATTERY_SCL,
  		GPIO_EC_I2C4_BATTERY_SDA
  	},
  
  	{
  		"power", I2C_PORT_POWER, 100, GPIO_EC_I2C0_POWER_SCL,
  		GPIO_EC_I2C0_POWER_SDA
  	},
  
  	{
  		"als_gyro", I2C_PORT_ALS_GYRO, 400, GPIO_EC_I2C5_ALS_GYRO_SCL,
  		GPIO_EC_I2C5_ALS_GYRO_SDA
  	},
  
  	{
  		"usbc0", I2C_PORT_USB_C0, 100, GPIO_USB_C0_SCL, GPIO_USB_C0_SDA
  	},
  
  	{
  		"usbc1", I2C_PORT_USB_C1, 100, GPIO_USB_C1_SCL, GPIO_USB_C1_SDA
  	},
  };
  const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
  
  
  /*
   * Motion Sense
   */
  
  /* Lid Sensor mutex */
  static struct mutex g_lid_mutex;
  
  /* Sensor driver data */
  static struct bmi_drv_data_t g_bmi160_data;
  static struct opt3001_drv_data_t g_opt3001_data = {
  	.scale = 1,
  	.uscale = 0,
  	.offset = 0,
  };
  
  /* Matrix to rotate accel/gyro into standard reference frame. */
  const mat33_fp_t lid_standard_ref = {
  	{ 0, FLOAT_TO_FP(1),  0},
  	{ FLOAT_TO_FP(-1), 0,  0},
  	{ 0,  0, FLOAT_TO_FP(1)}
  };
  
  struct motion_sensor_t motion_sensors[] = {
  	[LID_ACCEL] = {
  		.name = "BMI160 ACC",
  		.active_mask = SENSOR_ACTIVE_S0_S3,
  		.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_ALS_GYRO,
  		.i2c_spi_addr_flags = BMI160_ADDR0_FLAGS,
  		.rot_standard_ref = &lid_standard_ref,
  		.default_range = 4,  /* g, to meet CDD 7.3.1/C-1-4 reqs */
  		.min_frequency = BMI_ACCEL_MIN_FREQ,
  		.max_frequency = BMI_ACCEL_MAX_FREQ,
  		.config = {
  			/* EC setup accel for chrome usage */
  			[SENSOR_CONFIG_EC_S0] = {
  				.odr = 10000 | ROUND_UP_FLAG,
  			},
  		},
  	},
  
  	[LID_GYRO] = {
  		.name = "BMI160 GYRO",
  		.active_mask = SENSOR_ACTIVE_S0_S3,
  		.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_ALS_GYRO,
  		.i2c_spi_addr_flags = BMI160_ADDR0_FLAGS,
  		.rot_standard_ref = &lid_standard_ref,
  		.default_range = 1000, /* dps */
  		.min_frequency = BMI_GYRO_MIN_FREQ,
  		.max_frequency = BMI_GYRO_MAX_FREQ,
  	},
  
  	[LID_ALS] = {
  		.name = "Light",
  		.active_mask = SENSOR_ACTIVE_S0_S3,
  		.chip = MOTIONSENSE_CHIP_OPT3001,
  		.type = MOTIONSENSE_TYPE_LIGHT,
  		.location = MOTIONSENSE_LOC_LID,
  		.drv = &opt3001_drv,
  		.drv_data = &g_opt3001_data,
  		.port = I2C_PORT_ALS_GYRO,
  		.i2c_spi_addr_flags = OPT3001_I2C_ADDR_FLAGS,
  		.rot_standard_ref = NULL,
  		/* scale = 43.4513 http://b/111528815#comment14 */
  		.default_range = 0x2b11a1,
  		.min_frequency = OPT3001_LIGHT_MIN_FREQ,
  		.max_frequency = OPT3001_LIGHT_MAX_FREQ,
  		.config = {
  			/* Run ALS sensor in S0 */
  			[SENSOR_CONFIG_EC_S0] = {
  				.odr = 1000,
  			},
  		},
  	},
  
  	[VSYNC] = {
  		.name = "Camera VSYNC",
  		.active_mask = SENSOR_ACTIVE_S0,
  		.chip = MOTIONSENSE_CHIP_GPIO,
  		.type = MOTIONSENSE_TYPE_SYNC,
  		.location = MOTIONSENSE_LOC_CAMERA,
  		.drv = &sync_drv,
  		.default_range = 0,
  		.min_frequency = 0,
  		.max_frequency = 1,
  	},
  };
  const unsigned int motion_sensor_count = ARRAY_SIZE(motion_sensors);
  
  /* ALS instances when LPC mapping is needed. Each entry directs to a sensor. */
  const struct motion_sensor_t *motion_als_sensors[] = {
  	&motion_sensors[LID_ALS],
  };
  BUILD_ASSERT(ARRAY_SIZE(motion_als_sensors) == ALS_COUNT);
  
  static void disable_sensor_irqs(void)
  {
  	/*
  	 * In S5, sensors are unpowered, therefore disable their interrupts on
  	 * shutdown.
  	 */
  	gpio_disable_interrupt(GPIO_ACCELGYRO3_INT_L);
  	gpio_disable_interrupt(GPIO_RCAM_VSYNC);
  }
  DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, disable_sensor_irqs, HOOK_PRIO_DEFAULT);
  
  static void enable_sensor_irqs(void)
  {
  	/*
  	 * Re-enable the sensor interrupts when entering S0.
  	 */
  	gpio_enable_interrupt(GPIO_ACCELGYRO3_INT_L);
  	gpio_enable_interrupt(GPIO_RCAM_VSYNC);
  }
  DECLARE_HOOK(HOOK_CHIPSET_RESUME, enable_sensor_irqs, HOOK_PRIO_DEFAULT);
  
  struct ppc_config_t ppc_chips[] = {
  	{
  		.i2c_port = I2C_PORT_USB_C0,
  		.i2c_addr_flags = SN5S330_ADDR0_FLAGS,
  		.drv = &sn5s330_drv
  	},
  	{
  		.i2c_port = I2C_PORT_USB_C1,
  		.i2c_addr_flags = SN5S330_ADDR0_FLAGS,
  		.drv = &sn5s330_drv,
  	},
  };
  unsigned int ppc_cnt = ARRAY_SIZE(ppc_chips);
  
  const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_MAX_COUNT] = {
  	{
  		.bus_type = EC_BUS_TYPE_I2C,
  		.i2c_info = {
  			.port = I2C_PORT_USB_C0,
  			.addr_flags = PS8751_I2C_ADDR1_FLAGS,
  		},
  		.drv = &ps8xxx_tcpm_drv,
  	},
  	{
  		.bus_type = EC_BUS_TYPE_I2C,
  		.i2c_info = {
  			.port = I2C_PORT_USB_C1,
  			.addr_flags = PS8751_I2C_ADDR1_FLAGS,
  		},
  		.drv = &ps8xxx_tcpm_drv,
  	},
  };
  
  const struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_MAX_COUNT] = {
  	{
  		.usb_port = 0,
  		.driver = &tcpci_tcpm_usb_mux_driver,
  		.hpd_update = &ps8xxx_tcpc_update_hpd_status,
  	},
  
  	{
  		.usb_port = 1,
  		.driver = &tcpci_tcpm_usb_mux_driver,
  		.hpd_update = &ps8xxx_tcpc_update_hpd_status,
  	},
  };
  
  const struct charger_config_t chg_chips[] = {
  	{
  		.i2c_port = I2C_PORT_CHARGER,
  		.i2c_addr_flags = ISL923X_ADDR_FLAGS,
  		.drv = &isl923x_drv,
  	},
  };
  
  const unsigned int chg_cnt = ARRAY_SIZE(chg_chips);
  
  void board_chipset_startup(void)
  {
  	gpio_set_level(GPIO_EN_5V, 1);
  }
  DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup, HOOK_PRIO_DEFAULT);
  
  static void imvp8_tune_deferred(void)
  {
  	/* For the IMVP8, reduce the steps during decay from 3 to 1. */
  	if (i2c_write16(I2C_PORT_POWER, I2C_ADDR_MP2949_FLAGS,
  			0xFA, 0x0AC5))
  		CPRINTS("Failed to change step decay!");
  }
  DECLARE_DEFERRED(imvp8_tune_deferred);
  
  void board_chipset_resume(void)
  {
  	/* Write to the IMVP8 after 250ms. */
  	hook_call_deferred(&imvp8_tune_deferred_data, 250 * MSEC);
  }
  DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
  
  void board_chipset_shutdown(void)
  {
  	gpio_set_level(GPIO_EN_5V, 0);
  }
  DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown, HOOK_PRIO_DEFAULT);
  
  int board_get_version(void)
  {
  	static int board_version = -1;
  
  	if (board_version == -1) {
  		board_version = 0;
  		/* BRD_ID0 is LSb. */
  		if (gpio_get_level(GPIO_EC_BRD_ID0))
  			board_version |= 0x1;
  		if (gpio_get_level(GPIO_EC_BRD_ID1))
  			board_version |= 0x2;
  		if (gpio_get_level(GPIO_EC_BRD_ID2))
  			board_version |= 0x4;
  		if (gpio_get_level(GPIO_EC_BRD_ID3))
  			board_version |= 0x8;
  	}
  
  	return board_version;
  }
  
  void board_hibernate(void)
  {
  	int p;
  
  	/* Configure PSL pins */
  	for (p = 0; p < hibernate_wake_pins_used; p++)
  		system_config_psl_mode(hibernate_wake_pins[p]);
  
  	/*
  	 * Enter PSL mode.  Note that on Nocturne, simply enabling PSL mode does
  	 * not cut the EC's power.  Therefore, we'll need to cut off power via
  	 * the ROP PMIC afterwards.
  	 */
  	system_enter_psl_mode();
  
  	/* Cut off DSW power via the ROP PMIC. */
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x49, 0x1);
  
  	/* Wait for power to be cut. */
  	while (1)
  		;
  }
  
  static void board_init(void)
  {
  	/* Enable USB Type-C interrupts. */
  	gpio_enable_interrupt(GPIO_USB_C0_PD_INT_ODL);
  	gpio_enable_interrupt(GPIO_USB_C1_PD_INT_ODL);
  
  	/* Enable sensor IRQs if we're in S0. */
  	if (chipset_in_state(CHIPSET_STATE_ON))
  		enable_sensor_irqs();
  }
  DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
  
  int board_is_i2c_port_powered(int port)
  {
  	if (port != I2C_PORT_ALS_GYRO)
  		return 1;
  
  	/* The sensors are not powered in anything lower than S5. */
  	return chipset_in_state(CHIPSET_STATE_ANY_OFF) ? 0 : 1;
  }
  
  static void board_lid_change(void)
  {
  	/* This is done in hardware on old revisions. */
  	if (board_get_version() <= 1)
  		return;
  
  	if (lid_is_open())
  		gpio_set_level(GPIO_UHALL_PWR_EN, 1);
  	else
  		gpio_set_level(GPIO_UHALL_PWR_EN, 0);
  }
  DECLARE_HOOK(HOOK_LID_CHANGE, board_lid_change, HOOK_PRIO_DEFAULT);
  
  static void board_pmic_disable_slp_s0_vr_decay(void)
  {
  	/*
  	 * VCCIOCNT:
  	 * Bit 6    (0)   - Disable decay of VCCIO on SLP_S0# assertion
  	 * Bits 5:4 (11)  - Nominal output voltage: 0.850V
  	 * Bits 3:2 (10)  - VR set to AUTO on SLP_S0# de-assertion
  	 * Bits 1:0 (10)  - VR set to AUTO operating mode
  	 */
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x30, 0x3a);
  
  	/*
  	 * V18ACNT:
  	 * Bits 7:6 (00) - Disable low power mode on SLP_S0# assertion
  	 * Bits 5:4 (10) - Nominal voltage set to 1.8V
  	 * Bits 3:2 (10) - VR set to AUTO on SLP_S0# de-assertion
  	 * Bits 1:0 (10) - VR set to AUTO operating mode
  	 */
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x34, 0x2a);
  
  	/*
  	 * V085ACNT:
  	 * Bits 7:6 (00) - Disable low power mode on SLP_S0# assertion
  	 * Bits 5:4 (10) - Nominal voltage 0.85V
  	 * Bits 3:2 (10) - VR set to AUTO on SLP_S0# de-assertion
  	 * Bits 1:0 (10) - VR set to AUTO operating mode
  	 */
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x38, 0x2a);
  }
  
  static void board_pmic_enable_slp_s0_vr_decay(void)
  {
  	/*
  	 * VCCIOCNT:
  	 * Bit 6    (1)   - Enable decay of VCCIO on SLP_S0# assertion
  	 * Bits 5:4 (11)  - Nominal output voltage: 0.850V
  	 * Bits 3:2 (10)  - VR set to AUTO on SLP_S0# de-assertion
  	 * Bits 1:0 (10)  - VR set to AUTO operating mode
  	 */
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x30, 0x7a);
  
  	/*
  	 * V18ACNT:
  	 * Bits 7:6 (01) - Enable low power mode on SLP_S0# assertion
  	 * Bits 5:4 (10) - Nominal voltage set to 1.8V
  	 * Bits 3:2 (10) - VR set to AUTO on SLP_S0# de-assertion
  	 * Bits 1:0 (10) - VR set to AUTO operating mode
  	 */
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x34, 0x6a);
  
  	/*
  	 * V085ACNT:
  	 * Bits 7:6 (01) - Enable low power mode on SLP_S0# assertion
  	 * Bits 5:4 (10) - Nominal voltage 0.85V
  	 * Bits 3:2 (10) - VR set to AUTO on SLP_S0# de-assertion
  	 * Bits 1:0 (10) - VR set to AUTO operating mode
  	 */
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x38, 0x6a);
  }
  
  __override void power_board_handle_host_sleep_event(
  		enum host_sleep_event state)
  {
  	if (state == HOST_SLEEP_EVENT_S0IX_SUSPEND)
  		board_pmic_enable_slp_s0_vr_decay();
  	else if (state == HOST_SLEEP_EVENT_S0IX_RESUME)
  		board_pmic_disable_slp_s0_vr_decay();
  }
  
  static void board_pmic_init(void)
  {
  	int pgmask1;
  
  	/* Mask V5A_DS3_PG from PMIC PGMASK1. */
  	if (i2c_read8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS,
  		      0x18, &pgmask1))
  		return;
  	pgmask1 |= BIT(2);
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x18, pgmask1);
  
  	board_pmic_disable_slp_s0_vr_decay();
  
  	/* Enable active discharge (100 ohms) on V33A_PCH and V1.8A. */
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x3D, 0x5);
  
  	/* Enable active discharge (500 ohms) on 1.8U and (100 ohms) 1.2U. */
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x3E, 0xD0);
  }
  DECLARE_HOOK(HOOK_INIT, board_pmic_init, HOOK_PRIO_DEFAULT);
  
  static void board_quirks(void)
  {
  	/*
  	 * Newer board revisions have external pull ups stuffed, so remove the
  	 * internal pulls.
  	 */
  	if (board_get_version() > 0) {
  		gpio_set_flags(GPIO_USB_C0_PD_INT_ODL, GPIO_INT_FALLING);
  		gpio_set_flags(GPIO_USB_C1_PD_INT_ODL, GPIO_INT_FALLING);
  	}
  
  	/*
  	 * Older boards don't have the SBU bypass circuitry needed for CCD, so
  	 * enable the CCD_MODE_ODL interrupt such that we can help in making
  	 * sure the SBU FETs are connected.
  	 */
  	if (board_get_version() < 2)
  		gpio_enable_interrupt(GPIO_CCD_MODE_ODL);
  }
  DECLARE_HOOK(HOOK_INIT, board_quirks, HOOK_PRIO_DEFAULT);
  
  void board_overcurrent_event(int port, int is_overcurrented)
  {
  	int lvl;
  
  	/* Sanity check the port. */
  	if ((port < 0) || (port >= CONFIG_USB_PD_PORT_MAX_COUNT))
  		return;
  
  	/* Note that the levels are inverted because the pin is active low. */
  	lvl = is_overcurrented ? 0 : 1;
  
  	switch (port) {
  	case 0:
  		gpio_set_level(GPIO_USB_C0_OC_ODL, lvl);
  		break;
  
  	case 1:
  		gpio_set_level(GPIO_USB_C1_OC_ODL, lvl);
  		break;
  
  	default:
  		return;
  	};
  }
  
  static int read_gyro_sensor_temp(int idx, int *temp_ptr)
  {
  	/*
  	 * The gyro is only powered in S0, so don't go and read it if the AP is
  	 * off.
  	 */
  	if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
  		return EC_ERROR_NOT_POWERED;
  
  	return bmi160_get_sensor_temp(idx, temp_ptr);
  }
  
  const struct temp_sensor_t temp_sensors[] = {
  	{"Battery", TEMP_SENSOR_TYPE_BATTERY, charge_get_battery_temp, 0},
  
  	/* These BD99992GW temp sensors are only readable in S0 */
  	{"Ambient", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val,
  	 BD99992GW_ADC_CHANNEL_SYSTHERM0},
  	{"Charger", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val,
  	 BD99992GW_ADC_CHANNEL_SYSTHERM1},
  	{"DRAM", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val,
  	 BD99992GW_ADC_CHANNEL_SYSTHERM2},
  	{"eMMC", TEMP_SENSOR_TYPE_BOARD, bd99992gw_get_val,
  	 BD99992GW_ADC_CHANNEL_SYSTHERM3},
  	/* The Gyro temperature sensor is only readable in S0. */
  	{"Gyro", TEMP_SENSOR_TYPE_BOARD, read_gyro_sensor_temp, LID_GYRO}
  };
  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, 0}, 0, 0}, /* Battery */
  	{{0,          0, 0}, {0, 0, 0}, 0, 0}, /* Ambient */
  	{{0,          0, 0}, {0, 0, 0}, 0, 0}, /* Charger */
  	{{0, C_TO_K(52), 0}, {0, 0, 0}, 0, 0}, /* DRAM */
  	{{0,          0, 0}, {0, 0, 0}, 0, 0}, /* eMMC */
  	{{0,          0, 0}, {0, 0, 0}, 0, 0}  /* Gyro */
  };
  BUILD_ASSERT(ARRAY_SIZE(thermal_params) == TEMP_SENSOR_COUNT);
  
  
  /*
   * Check if PMIC fault registers indicate VR fault. If yes, print out fault
   * register info to console. Additionally, set panic reason so that the OS can
   * check for fault register info by looking at offset 0x14(PWRSTAT1) and
   * 0x15(PWRSTAT2) in cros ec panicinfo.
   */
  static void board_report_pmic_fault(const char *str)
  {
  	int vrfault, pwrstat1 = 0, pwrstat2 = 0;
  	uint32_t info;
  
  	/* RESETIRQ1 -- Bit 4: VRFAULT */
  	if (i2c_read8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x8, &vrfault)
  	    != EC_SUCCESS)
  		return;
  
  	if (!(vrfault & BIT(4)))
  		return;
  
  	/* VRFAULT has occurred, print VRFAULT status bits. */
  
  	/* PWRSTAT1 */
  	i2c_read8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x16, &pwrstat1);
  
  	/* PWRSTAT2 */
  	i2c_read8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x17, &pwrstat2);
  
  	CPRINTS("PMIC VRFAULT: %s", str);
  	CPRINTS("PMIC VRFAULT: PWRSTAT1=0x%02x PWRSTAT2=0x%02x", pwrstat1,
  		pwrstat2);
  
  	/* Clear all faults -- Write 1 to clear. */
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x8, BIT(4));
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x16, pwrstat1);
  	i2c_write8(I2C_PORT_PMIC, I2C_ADDR_BD99992_FLAGS, 0x17, pwrstat2);
  
  	/*
  	 * Status of the fault registers can be checked in the OS by looking at
  	 * offset 0x14(PWRSTAT1) and 0x15(PWRSTAT2) in cros ec panicinfo.
  	 */
  	info = ((pwrstat2 & 0xFF) << 8) | (pwrstat1 & 0xFF);
  	panic_set_reason(PANIC_SW_PMIC_FAULT, info, 0);
  }
  
  void board_reset_pd_mcu(void)
  {
  	cprints(CC_USB, "Resetting TCPCs...");
  	cflush();
  	/* GPIO_USB_PD_RST_L resets all the TCPCs. */
  	gpio_set_level(GPIO_USB_PD_RST_L, 0);
  	msleep(10); /* TODO(aaboagye): Verify min hold time. */
  	gpio_set_level(GPIO_USB_PD_RST_L, 1);
  	msleep(PS8805_FW_INIT_DELAY_MS);
  }
  
  void board_set_tcpc_power_mode(int port, int mode)
  {
  	/* Ignore the "mode" to turn the chip on.  We can only do a reset. */
  	if (mode)
  		return;
  
  	board_reset_pd_mcu();
  }
  
  int board_set_active_charge_port(int port)
  {
  	int is_real_port = (port >= 0 &&
  			    port < CONFIG_USB_PD_PORT_MAX_COUNT);
  	int i;
  	int rv;
  	int old_port;
  
  	if (!is_real_port && port != CHARGE_PORT_NONE)
  		return EC_ERROR_INVAL;
  
  	old_port = charge_manager_get_active_charge_port();
  
  	CPRINTS("New chg p%d", port);
  
  	if (port == CHARGE_PORT_NONE) {
  		/* Disable all ports. */
  		for (i = 0; i < ppc_cnt; i++) {
  			rv = ppc_vbus_sink_enable(i, 0);
  			/*
  			 * Deliberately ignoring this error since it may cause
  			 * an assertion error.
  			 */
  			if (rv)
  				CPRINTS("Disabling p%d sink path failed.", i);
  		}
  
  		return EC_SUCCESS;
  	}
  
  	/* Check if the port is sourcing VBUS. */
  	if (ppc_is_sourcing_vbus(port)) {
  		CPRINTF("Skip enable p%d", port);
  		return EC_ERROR_INVAL;
  	}
  
  	/*
  	 * Turn off the other ports' sink path FETs, before enabling the
  	 * requested charge port.
  	 */
  	for (i = 0; i < ppc_cnt; i++) {
  		if (i == port)
  			continue;
  
  		if (ppc_vbus_sink_enable(i, 0))
  			CPRINTS("p%d: sink path disable failed.", i);
  	}
  
  	/*
  	 * Stop the charger IC from switching while changing ports.  Otherwise,
  	 * we can overcurrent the adapter we're switching to. (crbug.com/926056)
  	 */
  	if (old_port != CHARGE_PORT_NONE)
  		charger_discharge_on_ac(1);
  
  	/* Enable requested charge port. */
  	if (ppc_vbus_sink_enable(port, 1)) {
  		CPRINTS("p%d: sink path enable failed.", port);
  		charger_discharge_on_ac(0);
  		return EC_ERROR_UNKNOWN;
  	}
  
  	/* Allow the charger IC to begin/continue switching. */
  	charger_discharge_on_ac(0);
  
  	return EC_SUCCESS;
  }
  
  void board_set_charge_limit(int port, int supplier, int charge_ma,
  			    int max_ma, int charge_mv)
  {
  	int icl = MAX(charge_ma, CONFIG_CHARGER_INPUT_CURRENT);
  
  	/*
  	 * Nocturne seems to overdraw its set input current limit by about 5%.
  	 * Request at most 95% of what's desired.
  	 */
  	icl = icl * 95 / 100;
  	charge_set_input_current_limit(icl, charge_mv);
  }
  
  static void board_chipset_reset(void)
  {
  	board_report_pmic_fault("CHIPSET RESET");
  }
  DECLARE_HOOK(HOOK_CHIPSET_RESET, board_chipset_reset, HOOK_PRIO_DEFAULT);
  
  uint16_t tcpc_get_alert_status(void)
  {
  	uint16_t status = 0;
  	int regval;
  
  	/*
  	 * The interrupt line is shared between the TCPC and PPC.  Therefore, go
  	 * out and actually read the alert registers to report the alert status.
  	 */
  	if (!gpio_get_level(GPIO_USB_C0_PD_INT_ODL)) {
  		if (!tcpc_read16(0, TCPC_REG_ALERT, &regval)) {
  			/* The TCPCI spec says to ignore bits 14:12. */
  			regval &= ~(BIT(14) | BIT(13) | BIT(12));
  
  			if (regval)
  				status |= PD_STATUS_TCPC_ALERT_0;
  		}
  	}
  
  	if (!gpio_get_level(GPIO_USB_C1_PD_INT_ODL)) {
  		if (!tcpc_read16(1, TCPC_REG_ALERT, &regval)) {
  			/* TCPCI spec says to ignore bits 14:12. */
  			regval &= ~(BIT(14) | BIT(13) | BIT(12));
  
  			if (regval)
  				status |= PD_STATUS_TCPC_ALERT_1;
  		}
  	}
  
  	return status;
  }
  