text: /* Copyright 2019 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.
   */
  
  /* Morphius board configuration */
  
  #include "adc.h"
  #include "battery_smart.h"
  #include "button.h"
  #include "cbi_ssfc.h"
  #include "charger.h"
  #include "cros_board_info.h"
  #include "driver/accelgyro_bmi_common.h"
  #include "driver/accelgyro_icm_common.h"
  #include "driver/accelgyro_icm426xx.h"
  #include "driver/accel_kionix.h"
  #include "driver/accel_kx022.h"
  #include "driver/ppc/aoz1380.h"
  #include "driver/ppc/nx20p348x.h"
  #include "driver/retimer/pi3dpx1207.h"
  #include "driver/retimer/pi3hdx1204.h"
  #include "driver/temp_sensor/sb_tsi.h"
  #include "driver/temp_sensor/tmp432.h"
  #include "driver/usb_mux/amd_fp5.h"
  #include "extpower.h"
  #include "gpio.h"
  #include "fan.h"
  #include "fan_chip.h"
  #include "hooks.h"
  #include "keyboard_8042.h"
  #include "lid_switch.h"
  #include "mkbp_event.h"
  #include "power.h"
  #include "power_button.h"
  #include "ps2_chip.h"
  #include "pwm.h"
  #include "pwm_chip.h"
  #include "switch.h"
  #include "system.h"
  #include "tablet_mode.h"
  #include "task.h"
  #include "temp_sensor.h"
  #include "temp_sensor/thermistor.h"
  #include "usb_mux.h"
  #include "usb_charge.h"
  #include "usbc_ppc.h"
  
  static void hdmi_hpd_interrupt_v2(enum ioex_signal signal);
  static void hdmi_hpd_interrupt_v3(enum gpio_signal signal);
  static void board_gmr_tablet_switch_isr(enum gpio_signal signal);
  
  #include "gpio_list.h"
  
  static bool support_aoz_ppc;
  static bool ignore_c1_dp;
  
  /* Motion sensors */
  static struct mutex g_lid_mutex;
  static struct mutex g_base_mutex;
  
  mat33_fp_t base_standard_ref = {
  	{ 0, FLOAT_TO_FP(1), 0},
  	{ FLOAT_TO_FP(1), 0, 0},
  	{ 0, 0, FLOAT_TO_FP(-1)}
  };
  const mat33_fp_t base_standard_ref_1 = {
  	{ FLOAT_TO_FP(-1), 0, 0},
  	{ 0, FLOAT_TO_FP(1), 0},
  	{ 0, 0,  FLOAT_TO_FP(-1)}
  };
  mat33_fp_t lid_standard_ref = {
  	{ 0, FLOAT_TO_FP(1), 0},
  	{ FLOAT_TO_FP(-1), 0,  0},
  	{ 0, 0, FLOAT_TO_FP(1)}
  };
  
  /* sensor private data */
  static struct kionix_accel_data g_kx022_data;
  static struct bmi_drv_data_t g_bmi160_data;
  static struct icm_drv_data_t g_icm426xx_data;
  
  /* TODO(gcc >= 5.0) Remove the casts to const pointer at rot_standard_ref */
  struct motion_sensor_t motion_sensors[] = {
  	[LID_ACCEL] = {
  	 .name = "Lid Accel",
  	 .active_mask = SENSOR_ACTIVE_S0_S3,
  	 .chip = MOTIONSENSE_CHIP_KX022,
  	 .type = MOTIONSENSE_TYPE_ACCEL,
  	 .location = MOTIONSENSE_LOC_LID,
  	 .drv = &kionix_accel_drv,
  	 .mutex = &g_lid_mutex,
  	 .drv_data = &g_kx022_data,
  	 .port = I2C_PORT_SENSOR,
  	 .i2c_spi_addr_flags = KX022_ADDR1_FLAGS,
  	 .rot_standard_ref = (const mat33_fp_t *)&lid_standard_ref,
  	 .default_range = 2, /* g, enough for laptop. */
  	 .min_frequency = KX022_ACCEL_MIN_FREQ,
  	 .max_frequency = KX022_ACCEL_MAX_FREQ,
  	 .config = {
  		 /* EC use accel for angle detection */
  		 [SENSOR_CONFIG_EC_S0] = {
  			.odr = 10000 | ROUND_UP_FLAG,
  			.ec_rate = 100,
  		 },
  		/* EC use accel for angle detection */
  		[SENSOR_CONFIG_EC_S3] = {
  			.odr = 10000 | ROUND_UP_FLAG,
  		},
  	 },
  	},
  
  	[BASE_ACCEL] = {
  	 .name = "Base Accel",
  	 .active_mask = SENSOR_ACTIVE_S0_S3,
  	 .chip = MOTIONSENSE_CHIP_BMI160,
  	 .type = MOTIONSENSE_TYPE_ACCEL,
  	 .location = MOTIONSENSE_LOC_BASE,
  	 .drv = &bmi160_drv,
  	 .mutex = &g_base_mutex,
  	 .drv_data = &g_bmi160_data,
  	 .port = I2C_PORT_SENSOR,
  	 .i2c_spi_addr_flags = BMI160_ADDR0_FLAGS,
  	 .default_range = 4, /* g, to meet CDD 7.3.1/C-1-4 reqs.*/
  	 .rot_standard_ref = (const mat33_fp_t *)&base_standard_ref,
  	 .min_frequency = BMI_ACCEL_MIN_FREQ,
  	 .max_frequency = BMI_ACCEL_MAX_FREQ,
  	 .config = {
  		 /* EC use accel for angle detection */
  		 [SENSOR_CONFIG_EC_S0] = {
  			.odr = 10000 | ROUND_UP_FLAG,
  			.ec_rate = 100,
  		 },
  		 /* EC use accel for angle detection */
  		 [SENSOR_CONFIG_EC_S3] = {
  			.odr = 10000 | ROUND_UP_FLAG,
  		 },
  	 },
  	},
  
  	[BASE_GYRO] = {
  	 .name = "Base Gyro",
  	 .active_mask = SENSOR_ACTIVE_S0_S3,
  	 .chip = MOTIONSENSE_CHIP_BMI160,
  	 .type = MOTIONSENSE_TYPE_GYRO,
  	 .location = MOTIONSENSE_LOC_BASE,
  	 .drv = &bmi160_drv,
  	 .mutex = &g_base_mutex,
  	 .drv_data = &g_bmi160_data,
  	 .port = I2C_PORT_SENSOR,
  	 .i2c_spi_addr_flags = BMI160_ADDR0_FLAGS,
  	 .default_range = 1000, /* dps */
  	 .rot_standard_ref = (const mat33_fp_t *)&base_standard_ref,
  	 .min_frequency = BMI_GYRO_MIN_FREQ,
  	 .max_frequency = BMI_GYRO_MAX_FREQ,
  	},
  };
  
  unsigned int motion_sensor_count = ARRAY_SIZE(motion_sensors);
  
  struct motion_sensor_t icm426xx_base_accel = {
  	.name = "Base Accel",
  	.active_mask = SENSOR_ACTIVE_S0_S3,
  	.chip = MOTIONSENSE_CHIP_ICM426XX,
  	.type = MOTIONSENSE_TYPE_ACCEL,
  	.location = MOTIONSENSE_LOC_BASE,
  	.drv = &icm426xx_drv,
  	.mutex = &g_base_mutex,
  	.drv_data = &g_icm426xx_data,
  	.port = I2C_PORT_SENSOR,
  	.i2c_spi_addr_flags = ICM426XX_ADDR0_FLAGS,
  	.default_range = 4, /* g, to meet CDD 7.3.1/C-1-4 reqs.*/
  	.rot_standard_ref = &base_standard_ref_1,
  	.min_frequency = ICM426XX_ACCEL_MIN_FREQ,
  	.max_frequency = ICM426XX_ACCEL_MAX_FREQ,
  	.config = {
  		/* EC use accel for angle detection */
  		[SENSOR_CONFIG_EC_S0] = {
  			.odr = 10000 | ROUND_UP_FLAG,
  			.ec_rate = 100,
  		},
  		/* EC use accel for angle detection */
  		[SENSOR_CONFIG_EC_S3] = {
  			.odr = 10000 | ROUND_UP_FLAG,
  		},
  	},
  };
  struct motion_sensor_t icm426xx_base_gyro = {
  	.name = "Base Gyro",
  	.active_mask = SENSOR_ACTIVE_S0_S3,
  	.chip = MOTIONSENSE_CHIP_ICM426XX,
  	.type = MOTIONSENSE_TYPE_GYRO,
  	.location = MOTIONSENSE_LOC_BASE,
  	.drv = &icm426xx_drv,
  	.mutex = &g_base_mutex,
  	.drv_data = &g_icm426xx_data,
  	.port = I2C_PORT_SENSOR,
  	.i2c_spi_addr_flags = ICM426XX_ADDR0_FLAGS,
  	.default_range = 1000, /* dps */
  	.rot_standard_ref = &base_standard_ref_1,
  	.min_frequency = ICM426XX_GYRO_MIN_FREQ,
  	.max_frequency = ICM426XX_GYRO_MAX_FREQ,
  };
  
  const struct pwm_t pwm_channels[] = {
  	[PWM_CH_KBLIGHT] = {
  		.channel = 3,
  		.flags = PWM_CONFIG_DSLEEP,
  		.freq = 100,
  	},
  	[PWM_CH_FAN] = {
  		.channel = 2,
  		.flags = PWM_CONFIG_OPEN_DRAIN,
  		.freq = 25000,
  	},
  	[PWM_CH_POWER_LED] = {
  		.channel = 0,
  		.flags = PWM_CONFIG_DSLEEP,
  		.freq = 100,
  	},
  };
  BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
  
  /* MFT channels. These are logically separate from pwm_channels. */
  const struct mft_t mft_channels[] = {
  	[MFT_CH_0] = {
  		.module = NPCX_MFT_MODULE_1,
  		.clk_src = TCKC_LFCLK,
  		.pwm_id = PWM_CH_FAN,
  	},
  };
  BUILD_ASSERT(ARRAY_SIZE(mft_channels) == MFT_CH_COUNT);
  
  const int usb_port_enable[USBA_PORT_COUNT] = {
  	IOEX_EN_USB_A0_5V,
  	IOEX_EN_USB_A1_5V_DB,
  };
  
  const struct pi3hdx1204_tuning pi3hdx1204_tuning = {
  	.eq_ch0_ch1_offset = PI3HDX1204_EQ_DB710,
  	.eq_ch2_ch3_offset = PI3HDX1204_EQ_DB710,
  	.vod_offset = PI3HDX1204_VOD_130_ALL_CHANNELS,
  	.de_offset = PI3HDX1204_DE_DB_MINUS7,
  };
  
  /*****************************************************************************
   * Base Gyro Sensor dynamic configuration
   */
  static enum ec_ssfc_base_gyro_sensor base_gyro_config = SSFC_BASE_GYRO_NONE;
  
  enum ec_ssfc_base_gyro_sensor get_base_gyro_sensor(void)
  {
  	switch (get_cbi_ssfc_base_sensor()) {
  	case SSFC_BASE_GYRO_NONE:
  		return ec_config_has_base_gyro_sensor();
  	default:
  		return get_cbi_ssfc_base_sensor();
  	}
  }
  
  static void setup_base_gyro_config(void)
  {
  	base_gyro_config = get_base_gyro_sensor();
  
  	switch (base_gyro_config) {
  	case SSFC_BASE_GYRO_BMI160:
  		ccprints("BASE GYRO is BMI160");
  		break;
  	case SSFC_BASE_GYRO_ICM426XX:
  		motion_sensors[BASE_ACCEL] = icm426xx_base_accel;
  		motion_sensors[BASE_GYRO] = icm426xx_base_gyro;
  		ccprints("BASE GYRO is ICM426XX");
  		break;
  	default:
  		break;
  	}
  }
  
  void motion_interrupt(enum gpio_signal signal)
  {
  	switch (base_gyro_config) {
  	case SSFC_BASE_GYRO_BMI160:
  		bmi160_interrupt(signal);
  		break;
  	case SSFC_BASE_GYRO_ICM426XX:
  		icm426xx_interrupt(signal);
  		break;
  	default:
  		break;
  	}
  }
  
  /*****************************************************************************
   * USB-C MUX/Retimer dynamic configuration
   */
  static void setup_mux(void)
  {
  	if (ec_config_has_usbc1_retimer_ps8802()) {
  		ccprints("C1 PS8802 detected");
  
  		/*
  		 * Main MUX is PS8802, secondary MUX is modified FP5
  		 *
  		 * Replace usb_muxes[USBC_PORT_C1] with the PS8802
  		 * table entry.
  		 */
  		memcpy(&usb_muxes[USBC_PORT_C1],
  		       &usbc1_ps8802,
  		       sizeof(struct usb_mux));
  
  		/* Set the AMD FP5 as the secondary MUX */
  		usb_muxes[USBC_PORT_C1].next_mux = &usbc1_amd_fp5_usb_mux;
  
  		/* Don't have the AMD FP5 flip */
  		usbc1_amd_fp5_usb_mux.flags = USB_MUX_FLAG_SET_WITHOUT_FLIP;
  
  	} else if (ec_config_has_usbc1_retimer_ps8818()) {
  		ccprints("C1 PS8818 detected");
  
  		/*
  		 * Main MUX is FP5, secondary MUX is PS8818
  		 *
  		 * Replace usb_muxes[USBC_PORT_C1] with the AMD FP5
  		 * table entry.
  		 */
  		memcpy(&usb_muxes[USBC_PORT_C1],
  		       &usbc1_amd_fp5_usb_mux,
  		       sizeof(struct usb_mux));
  
  		/* Set the PS8818 as the secondary MUX */
  		usb_muxes[USBC_PORT_C1].next_mux = &usbc1_ps8818;
  	}
  }
  
  const struct pi3dpx1207_usb_control pi3dpx1207_controls[] = {
  	[USBC_PORT_C0] = {
  		.enable_gpio = IOEX_USB_C0_DATA_EN,
  		.dp_enable_gpio = GPIO_USB_C0_IN_HPD,
  	},
  	[USBC_PORT_C1] = {
  	},
  };
  BUILD_ASSERT(ARRAY_SIZE(pi3dpx1207_controls) == USBC_PORT_COUNT);
  
  const struct usb_mux usbc0_pi3dpx1207_usb_retimer = {
  	.usb_port = USBC_PORT_C0,
  	.i2c_port = I2C_PORT_TCPC0,
  	.i2c_addr_flags = PI3DPX1207_I2C_ADDR_FLAGS,
  	.driver = &pi3dpx1207_usb_retimer,
  };
  
  struct usb_mux usb_muxes[] = {
  	[USBC_PORT_C0] = {
  		.usb_port = USBC_PORT_C0,
  		.i2c_port = I2C_PORT_USB_AP_MUX,
  		.i2c_addr_flags = AMD_FP5_MUX_I2C_ADDR_FLAGS,
  		.driver = &amd_fp5_usb_mux_driver,
  		.next_mux = &usbc0_pi3dpx1207_usb_retimer,
  	},
  	[USBC_PORT_C1] = {
  		/* Filled in dynamically at startup */
  	},
  };
  BUILD_ASSERT(ARRAY_SIZE(usb_muxes) == USBC_PORT_COUNT);
  
  /*****************************************************************************
   * Use FW_CONFIG to set correct configuration.
   */
  static uint32_t board_ver;
  enum gpio_signal gpio_ec_ps2_reset = GPIO_EC_PS2_RESET_V1;
  int board_usbc1_retimer_inhpd = GPIO_USB_C1_HPD_IN_DB_V1;
  
  static void setup_v0_charger(void)
  {
  	cbi_get_board_version(&board_ver);
  
  	if (board_ver <= 2)
  		chg_chips[0].i2c_port = I2C_PORT_CHARGER_V0;
  }
  /*
   * Use HOOK_PRIO_INIT_I2C so we re-map before charger_chips_init()
   * talks to the charger.
   */
  DECLARE_HOOK(HOOK_INIT, setup_v0_charger, HOOK_PRIO_INIT_I2C);
  
  enum gpio_signal board_usbc_port_to_hpd_gpio(int port)
  {
  	/* USB-C0 always uses USB_C0_HPD (= DP3_HPD). */
  	if (port == 0)
  		return GPIO_USB_C0_HPD;
  
  	/*
  	 * USB-C1 OPT3 DB
  	 *    version_2 uses EC_DP1_HPD
  	 *    version_3 uses DP1_HPD via RTD2141B MST hub to drive AP
  	 *    HPD, EC drives MST hub HPD input from USB-PD messages.
  	 *
  	 * This would have been ec_config_has_usbc1_retimer_ps8802
  	 * on version_2 hardware but the result is the same and
  	 * this will be removed when version_2 hardware is retired.
  	 */
  	else if (ec_config_has_mst_hub_rtd2141b())
  		return (board_ver >= 4)
  				? GPIO_USB_C1_HPD_IN_DB_V1
  				: (board_ver == 3)
  					? IOEX_USB_C1_HPD_IN_DB
  					: GPIO_EC_DP1_HPD;
  
  	/* USB-C1 OPT1 DB uses DP2_HPD. */
  	return GPIO_DP2_HPD;
  }
  
  static void board_remap_gpio(void)
  {
  	int ppc_id = 0;
  
  	if (board_ver >= 3) {
  		int rv;
  
  		gpio_ec_ps2_reset = GPIO_EC_PS2_RESET_V1;
  		ccprintf("GPIO_EC_PS2_RESET_V1\n");
  
  		/*
  		 * TODO(dbrockus@): remove code when older version_2
  		 * hardware is retired and no longer needed
  		 */
  		rv = ioex_set_flags(IOEX_HDMI_POWER_EN_DB, GPIO_OUT_LOW);
  		rv |= ioex_set_flags(IOEX_USB_C1_PPC_ILIM_3A_EN, GPIO_OUT_LOW);
  		if (rv)
  			ccprintf("IOEX Board>=3 Remap FAILED\n");
  
  		if (ec_config_has_hdmi_retimer_pi3hdx1204())
  			gpio_enable_interrupt(GPIO_DP1_HPD_EC_IN);
  	} else {
  		gpio_ec_ps2_reset = GPIO_EC_PS2_RESET_V0;
  		ccprintf("GPIO_EC_PS2_RESET_V0\n");
  
  		/*
  		 * TODO(dbrockus@): remove code when older version_2
  		 * hardware is retired and no longer needed
  		 */
  		if (ec_config_has_mst_hub_rtd2141b())
  			ioex_enable_interrupt(IOEX_MST_HPD_OUT);
  
  		if (ec_config_has_hdmi_retimer_pi3hdx1204())
  			ioex_enable_interrupt(IOEX_HDMI_CONN_HPD_3V3_DB);
  	}
  
  	if (board_ver >= 4)
  		board_usbc1_retimer_inhpd = GPIO_USB_C1_HPD_IN_DB_V1;
  	else
  		board_usbc1_retimer_inhpd = IOEX_USB_C1_HPD_IN_DB;
  
  	ioex_get_level(IOEX_PPC_ID, &ppc_id);
  
  	support_aoz_ppc = (board_ver == 3) || ((board_ver >= 4) && !ppc_id);
  	if (support_aoz_ppc) {
  		ccprintf("DB USBC PPC aoz1380\n");
  		ppc_chips[USBC_PORT_C1].drv = &aoz1380_drv;
  	}
  }
  
  static void setup_fw_config(void)
  {
  	/* Enable Gyro interrupts */
  	gpio_enable_interrupt(GPIO_6AXIS_INT_L);
  
  	/* Enable PS2 power interrupts */
  	gpio_enable_interrupt(GPIO_EN_PWR_TOUCHPAD_PS2);
  
  	ps2_enable_channel(NPCX_PS2_CH0, 1, send_aux_data_to_host_interrupt);
  
  	setup_mux();
  
  	board_remap_gpio();
  
  	setup_base_gyro_config();
  }
  /* Use HOOK_PRIO_INIT_I2C + 2 to be after ioex_init(). */
  DECLARE_HOOK(HOOK_INIT, setup_fw_config, HOOK_PRIO_INIT_I2C + 2);
  
  /*****************************************************************************
   * Fan
   */
  
  /* Physical fans. These are logically separate from pwm_channels. */
  const struct fan_conf fan_conf_0 = {
  	.flags = FAN_USE_RPM_MODE,
  	.ch = MFT_CH_0,	/* Use MFT id to control fan */
  	.pgood_gpio = -1,
  	.enable_gpio = -1,
  };
  const struct fan_rpm fan_rpm_0 = {
  	.rpm_min = 1800,
  	.rpm_start = 3000,
  	.rpm_max = 5200,
  };
  const struct fan_t fans[] = {
  	[FAN_CH_0] = {
  		.conf = &fan_conf_0,
  		.rpm = &fan_rpm_0,
  	},
  };
  BUILD_ASSERT(ARRAY_SIZE(fans) == FAN_CH_COUNT);
  
  int board_get_temp(int idx, int *temp_k)
  {
  	int mv;
  	int temp_c;
  	enum adc_channel channel;
  
  	/* idx is the sensor index set in board temp_sensors[] */
  	switch (idx) {
  	case TEMP_SENSOR_CHARGER:
  		channel = ADC_TEMP_SENSOR_CHARGER;
  		break;
  
  	case TEMP_SENSOR_5V_REGULATOR:
  		/* thermistor is not powered in G3 */
  		if (chipset_in_state(CHIPSET_STATE_HARD_OFF))
  			return EC_ERROR_NOT_POWERED;
  
  		channel = ADC_TEMP_SENSOR_5V_REGULATOR;
  		break;
  	default:
  		return EC_ERROR_INVAL;
  	}
  
  	mv = adc_read_channel(channel);
  	if (mv < 0)
  		return EC_ERROR_INVAL;
  
  	temp_c = thermistor_linear_interpolate(mv, &thermistor_info);
  	*temp_k = C_TO_K(temp_c);
  	return EC_SUCCESS;
  }
  
  const struct adc_t adc_channels[] = {
  	[ADC_TEMP_SENSOR_CHARGER] = {
  		.name = "CHARGER",
  		.input_ch = NPCX_ADC_CH2,
  		.factor_mul = ADC_MAX_VOLT,
  		.factor_div = ADC_READ_MAX + 1,
  		.shift = 0,
  	},
  	[ADC_TEMP_SENSOR_5V_REGULATOR] = {
  		.name = "5V_REGULATOR",
  		.input_ch = NPCX_ADC_CH3,
  		.factor_mul = ADC_MAX_VOLT,
  		.factor_div = ADC_READ_MAX + 1,
  		.shift = 0,
  	},
  };
  BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
  
  const struct temp_sensor_t temp_sensors[] = {
  	[TEMP_SENSOR_CHARGER] = {
  		.name = "Charger",
  		.type = TEMP_SENSOR_TYPE_BOARD,
  		.read = board_get_temp,
  		.idx = TEMP_SENSOR_CHARGER,
  	},
  	[TEMP_SENSOR_5V_REGULATOR] = {
  		.name = "5V_REGULATOR",
  		.type = TEMP_SENSOR_TYPE_BOARD,
  		.read = board_get_temp,
  		.idx = TEMP_SENSOR_5V_REGULATOR,
  	},
  	[TEMP_SENSOR_CPU] = {
  		.name = "CPU",
  		.type = TEMP_SENSOR_TYPE_CPU,
  		.read = sb_tsi_get_val,
  		.idx = 0,
  	},
  	[TEMP_SENSOR_SSD] = {
  		.name = "SSD",
  		.type = TEMP_SENSOR_TYPE_BOARD,
  		.read = tmp432_get_val,
  		.idx = TMP432_IDX_LOCAL,
  	},
  };
  BUILD_ASSERT(ARRAY_SIZE(temp_sensors) == TEMP_SENSOR_COUNT);
  
  const static struct ec_thermal_config thermal_cpu = {
  	.temp_host = {
  		[EC_TEMP_THRESH_HIGH] = C_TO_K(90),
  		[EC_TEMP_THRESH_HALT] = C_TO_K(105),
  	},
  	.temp_host_release = {
  		[EC_TEMP_THRESH_HIGH] = C_TO_K(80),
  	},
  };
  
  struct ec_thermal_config thermal_params[TEMP_SENSOR_COUNT];
  
  static void setup_fans(void)
  {
  	thermal_params[TEMP_SENSOR_CPU] = thermal_cpu;
  }
  DECLARE_HOOK(HOOK_INIT, setup_fans, HOOK_PRIO_DEFAULT);
  
  /* Battery functions */
  #define SB_OPTIONALMFG_FUNCTION2        0x26
  #define SMART_CHARGE_SUPPORT            0x01
  #define SMART_CHARGE_ENABLE             0x02
  #define SB_SMART_CHARGE_ENABLE          1
  #define SB_SMART_CHARGE_DISABLE         0
  
  static void sb_smart_charge_mode(int enable)
  {
  	int val, rv;
  
  	rv = sb_read(SB_OPTIONALMFG_FUNCTION2, &val);
  	if (rv)
  		return;
  	if (val & SMART_CHARGE_SUPPORT) {
  		if (enable)
  			val |= SMART_CHARGE_ENABLE;
  		else
  			val &= ~SMART_CHARGE_ENABLE;
  		sb_write(SB_OPTIONALMFG_FUNCTION2, val);
  	}
  }
  
  __override void ppc_interrupt(enum gpio_signal signal)
  {
  	switch (signal) {
  	case GPIO_USB_C0_PPC_FAULT_ODL:
  		aoz1380_interrupt(USBC_PORT_C0);
  		break;
  
  	case GPIO_USB_C1_PPC_INT_ODL:
  		if (support_aoz_ppc)
  			aoz1380_interrupt(USBC_PORT_C1);
  		else
  			nx20p348x_interrupt(USBC_PORT_C1);
  		break;
  
  	default:
  		break;
  	}
  }
  
  /*
   * In the AOZ1380 PPC, there are no programmable features.  We use
   * the attached NCT3807 to control a GPIO to indicate 1A5 or 3A0
   * current limits.
   */
  __override int board_aoz1380_set_vbus_source_current_limit(int port,
  						enum tcpc_rp_value rp)
  {
  	int rv;
  
  	/* Use the TCPC to set the current limit */
  	if (port == 0) {
  		rv = ioex_set_level(IOEX_USB_C0_PPC_ILIM_3A_EN,
  			    (rp == TYPEC_RP_3A0) ? 1 : 0);
  	} else if (board_ver >= 3) {
  		rv = ioex_set_level(IOEX_USB_C1_PPC_ILIM_3A_EN,
  			    (rp == TYPEC_RP_3A0) ? 1 : 0);
  	} else {
  		rv = 1;
  	}
  
  	return rv;
  }
  
  static void trackpoint_reset_deferred(void)
  {
  	gpio_set_level(gpio_ec_ps2_reset, 1);
  	msleep(2);
  	gpio_set_level(gpio_ec_ps2_reset, 0);
  	msleep(10);
  }
  DECLARE_DEFERRED(trackpoint_reset_deferred);
  
  void send_aux_data_to_device(uint8_t data)
  {
  	ps2_transmit_byte(NPCX_PS2_CH0, data);
  }
  
  void ps2_pwr_en_interrupt(enum gpio_signal signal)
  {
  	hook_call_deferred(&trackpoint_reset_deferred_data, MSEC);
  }
  
  static int check_hdmi_hpd_status(void)
  {
  	int hpd = 0;
  
  	if (board_ver < 3)
  		ioex_get_level(IOEX_HDMI_CONN_HPD_3V3_DB, &hpd);
  	else
  		hpd = gpio_get_level(GPIO_DP1_HPD_EC_IN);
  
  	return hpd;
  }
  
  /*****************************************************************************
   * Board suspend / resume
   */
  
  static void board_chipset_resume(void)
  {
  	/* Normal charge current */
  	sb_smart_charge_mode(SB_SMART_CHARGE_DISABLE);
  	ioex_set_level(IOEX_HDMI_DATA_EN_DB, 1);
  
  	if (ec_config_has_hdmi_retimer_pi3hdx1204()) {
  		if (board_ver >= 3) {
  			ioex_set_level(IOEX_HDMI_POWER_EN_DB, 1);
  			msleep(PI3HDX1204_POWER_ON_DELAY_MS);
  		}
  		pi3hdx1204_enable(I2C_PORT_TCPC1,
  				  PI3HDX1204_I2C_ADDR_FLAGS,
  				  check_hdmi_hpd_status());
  	}
  }
  DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
  
  static void board_chipset_suspend_delay(void)
  {
  	ignore_c1_dp = false;
  }
  DECLARE_DEFERRED(board_chipset_suspend_delay);
  
  static void board_chipset_suspend(void)
  {
  	/* SMART charge current */
  	sb_smart_charge_mode(SB_SMART_CHARGE_ENABLE);
  
  	if (ec_config_has_hdmi_retimer_pi3hdx1204()) {
  		pi3hdx1204_enable(I2C_PORT_TCPC1,
  				  PI3HDX1204_I2C_ADDR_FLAGS,
  				  0);
  		if (board_ver >= 3)
  			ioex_set_level(IOEX_HDMI_POWER_EN_DB, 0);
  	}
  
  	/* Wait 500ms before allowing DP event to cause resume. */
  	if (ec_config_has_mst_hub_rtd2141b()
  	    && (dp_flags[USBC_PORT_C1] & DP_FLAGS_DP_ON)) {
  		ignore_c1_dp = true;
  		hook_call_deferred(&board_chipset_suspend_delay_data,
  				   500 * MSEC);
  	}
  
  	ioex_set_level(IOEX_HDMI_DATA_EN_DB, 0);
  }
  DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT);
  
  /*****************************************************************************
   * Power signals
   */
  
  const struct power_signal_info power_signal_list[] = {
  	[X86_SLP_S3_N] = {
  		.gpio = GPIO_PCH_SLP_S3_L,
  		.flags = POWER_SIGNAL_ACTIVE_HIGH,
  		.name = "SLP_S3_DEASSERTED",
  	},
  	[X86_SLP_S5_N] = {
  		.gpio = GPIO_PCH_SLP_S5_L,
  		.flags = POWER_SIGNAL_ACTIVE_HIGH,
  		.name = "SLP_S5_DEASSERTED",
  	},
  	[X86_S0_PGOOD] = {
  		.gpio = GPIO_S0_PGOOD,
  		.flags = POWER_SIGNAL_ACTIVE_HIGH,
  		.name = "S0_PGOOD",
  	},
  	[X86_S5_PGOOD] = {
  		.gpio = GPIO_S5_PGOOD,
  		.flags = POWER_SIGNAL_ACTIVE_HIGH,
  		.name = "S5_PGOOD",
  	},
  };
  BUILD_ASSERT(ARRAY_SIZE(power_signal_list) == POWER_SIGNAL_COUNT);
  
  #ifdef CONFIG_KEYBOARD_FACTORY_TEST
  /*
   * Map keyboard connector pins to EC GPIO pins for factory test.
   * Pins mapped to {-1, -1} are skipped.
   * The connector has 24 pins total, and there is no pin 0.
   */
  const int keyboard_factory_scan_pins[][2] = {
  		{3, 0}, {2, 2}, {2, 3}, {1, 2}, {2, 5},
  		{2, 4}, {2, 1}, {2, 7}, {2, 6}, {1, 5},
  		{2, 0}, {3, 1}, {1, 7}, {1, 6}, {-1, -1},
  		{1, 3}, {1, 4}, {-1, -1}, {-1, -1}, {0, 7},
  		{0, 6}, {1, 0}, {1, 1}, {0, 5},
  };
  
  const int keyboard_factory_scan_pins_used =
  			ARRAY_SIZE(keyboard_factory_scan_pins);
  #endif
  
  /*****************************************************************************
   * MST hub
   *
   * TODO(dbrockus@): remove VERSION_2 code when older version of hardware is
   * retired and no longer needed
   */
  static void mst_hpd_handler(void)
  {
  	int hpd = 0;
  
  	/*
  	 * Ensure level on GPIO_EC_DP1_HPD matches IOEX_MST_HPD_OUT, in case
  	 * we got out of sync.
  	 */
  	ioex_get_level(IOEX_MST_HPD_OUT, &hpd);
  	gpio_set_level(GPIO_EC_DP1_HPD, hpd);
  	ccprints("MST HPD %d", hpd);
  }
  DECLARE_DEFERRED(mst_hpd_handler);
  
  void mst_hpd_interrupt(enum ioex_signal signal)
  {
  	/*
  	 * Goal is to pass HPD through from DB OPT3 MST hub to AP's DP1.
  	 * Immediately invert GPIO_EC_DP1_HPD, to pass through the edge on
  	 * IOEX_MST_HPD_OUT. Then check level after 2 msec debounce.
  	 */
  	int hpd = !gpio_get_level(GPIO_EC_DP1_HPD);
  
  	gpio_set_level(GPIO_EC_DP1_HPD, hpd);
  	hook_call_deferred(&mst_hpd_handler_data, (2 * MSEC));
  }
  
  static void hdmi_hpd_handler(void)
  {
  	/* Pass HPD through from DB OPT1 HDMI connector to AP's DP1. */
  	int hpd = check_hdmi_hpd_status();
  
  	gpio_set_level(GPIO_EC_DP1_HPD, hpd);
  	ccprints("HDMI HPD %d", hpd);
  	pi3hdx1204_enable(I2C_PORT_TCPC1,
  			  PI3HDX1204_I2C_ADDR_FLAGS,
  			  chipset_in_or_transitioning_to_state(CHIPSET_STATE_ON)
  			  && hpd);
  }
  DECLARE_DEFERRED(hdmi_hpd_handler);
  
  static void hdmi_hpd_interrupt_v2(enum ioex_signal signal)
  {
  	/* Debounce for 2 msec. */
  	hook_call_deferred(&hdmi_hpd_handler_data, (2 * MSEC));
  }
  
  static void hdmi_hpd_interrupt_v3(enum gpio_signal signal)
  {
  	/* Debounce for 2 msec. */
  	hook_call_deferred(&hdmi_hpd_handler_data, (2 * MSEC));
  }
  
  static void board_gmr_tablet_switch_isr(enum gpio_signal signal)
  {
  	/* Board version more than 3, DUT support GMR sensor */
  	if (board_ver >= 3)
  		gmr_tablet_switch_isr(signal);
  }
  
  int board_sensor_at_360(void)
  {
  	/*
  	 * Board version >= 3 supports GMR sensor. For older boards return 0
  	 * indicating not in 360-degree mode and rely on lid angle for tablet
  	 * mode.
  	 */
  	if (board_ver >= 3)
  		return !gpio_get_level(GMR_TABLET_MODE_GPIO_L);
  
  	return 0;
  }
  
  /*
   * b/167949458: Suppress setting the host event for 500ms after entering S3.
   * Otherwise turning off the MST hub in S3 (via IOEX_HDMI_DATA_EN_DB) causes
   * a VDM:Attention that immediately wakes us back up from S3.
   */
  __override void pd_notify_dp_alt_mode_entry(int port)
  {
  	if (port == USBC_PORT_C1 && ignore_c1_dp)
  		return;
  	cprints(CC_USBPD, "Notifying AP of DP Alt Mode Entry...");
  	mkbp_send_event(EC_MKBP_EVENT_DP_ALT_MODE_ENTERED);
  }
  