text: /* Copyright 2020 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.
   */
  
  /* Coachz board-specific configuration */
  
  #include "adc_chip.h"
  #include "button.h"
  #include "charge_manager.h"
  #include "charge_state.h"
  #include "common.h"
  #include "extpower.h"
  #include "driver/accel_bma2x2.h"
  #include "driver/accelgyro_bmi_common.h"
  #include "driver/accelgyro_bmi260.h"
  #include "driver/ppc/sn5s330.h"
  #include "driver/tcpm/ps8xxx.h"
  #include "driver/tcpm/tcpci.h"
  #include "gpio.h"
  #include "hooks.h"
  #include "lid_switch.h"
  #include "mkbp_input_devices.h"
  #include "peripheral_charger.h"
  #include "pi3usb9201.h"
  #include "power.h"
  #include "power/qcom.h"
  #include "power_button.h"
  #include "pwm.h"
  #include "pwm_chip.h"
  #include "queue.h"
  #include "system.h"
  #include "shi_chip.h"
  #include "switch.h"
  #include "tablet_mode.h"
  #include "task.h"
  #include "usbc_ppc.h"
  
  #define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
  #define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args)
  
  #define KS_DEBOUNCE_US    (30 * MSEC)  /* Debounce time for kickstand switch */
  
  /* Forward declaration */
  static void tcpc_alert_event(enum gpio_signal signal);
  static void usb0_evt(enum gpio_signal signal);
  static void usb1_evt(enum gpio_signal signal);
  static void ppc_interrupt(enum gpio_signal signal);
  static void board_connect_c0_sbu(enum gpio_signal s);
  static void ks_interrupt(enum gpio_signal s);
  
  #include "gpio_list.h"
  
  /*
   * Workaround for b/193223400. This disables the IRQ from CTN730. Fixing this
   * here (using a rather awkward way) separates the fix from the common code.
   */
  #ifdef SECTION_IS_RW
  #define GPIO_PCHG_P0 GPIO_WLC_IRQ_CONN
  #else
  #define GPIO_PCHG_P0 ARRAY_SIZE(gpio_irq_handlers)
  #endif
  
  extern struct pchg_drv ctn730_drv;
  
  struct pchg pchgs[] = {
  	[0] = {
  		.cfg = &(const struct pchg_config) {
  			.drv = &ctn730_drv,
  			.i2c_port = I2C_PORT_WLC,
  			.irq_pin = GPIO_PCHG_P0,
  			.full_percent = 96,
  			.block_size = 128,
  		},
  		.events = QUEUE_NULL(PCHG_EVENT_QUEUE_SIZE, enum pchg_event),
  	},
  };
  const int pchg_count = ARRAY_SIZE(pchgs);
  
  /* GPIO Interrupt Handlers */
  static void tcpc_alert_event(enum gpio_signal signal)
  {
  	int port = -1;
  
  	switch (signal) {
  	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);
  }
  
  static void usb0_evt(enum gpio_signal signal)
  {
  	task_set_event(TASK_ID_USB_CHG_P0, USB_CHG_EVENT_BC12);
  }
  
  static void usb1_evt(enum gpio_signal signal)
  {
  	task_set_event(TASK_ID_USB_CHG_P1, USB_CHG_EVENT_BC12);
  }
  
  static void ppc_interrupt(enum gpio_signal signal)
  {
  	switch (signal) {
  	case GPIO_USB_C0_SWCTL_INT_ODL:
  		sn5s330_interrupt(0);
  		break;
  	case GPIO_USB_C1_SWCTL_INT_ODL:
  		sn5s330_interrupt(1);
  		break;
  	default:
  		break;
  	}
  }
  
  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);
  }
  
  static int debounced_ks_attached;
  static int debounced_ks_open;
  
  /**
   * Kickstand switch initialization
   */
  static void ks_init(void)
  {
  	debounced_ks_attached = !gpio_get_level(GPIO_KS_ATTACHED_L);
  	debounced_ks_open = gpio_get_level(GPIO_KS_OPEN);
  
  	/* Enable interrupts, now that we've initialized */
  	gpio_enable_interrupt(GPIO_KS_ATTACHED_L);
  	gpio_enable_interrupt(GPIO_KS_OPEN);
  }
  DECLARE_HOOK(HOOK_INIT, ks_init, HOOK_PRIO_INIT_SWITCH);
  
  /**
   * Handle debounced kickstand switch changing state.
   */
  static void ks_change_deferred(void)
  {
  	const int ks_attached = !gpio_get_level(GPIO_KS_ATTACHED_L);
  	const int ks_open = gpio_get_level(GPIO_KS_OPEN);
  	int proximity_detected;
  
  	/* If the switches haven't changed, nothing to do */
  	if (ks_attached == debounced_ks_attached &&
  	    ks_open == debounced_ks_open)
  		return;
  
  	/*
  	 * A heuristic method to use the kickstand position to approach
  	 * the human body proximity.
  	 */
  	proximity_detected = !(ks_attached && ks_open);
  	CPRINTS("ks %s %s -> proximity %s",
  		ks_attached ? "attached" : "detached",
  		ks_open ? "open" : "close",
  		proximity_detected ? "on" : "off");
  
  	debounced_ks_attached = ks_attached;
  	debounced_ks_open = ks_open;
  
  	mkbp_update_switches(EC_MKBP_FRONT_PROXIMITY, proximity_detected);
  }
  DECLARE_DEFERRED(ks_change_deferred);
  
  static void ks_interrupt(enum gpio_signal s)
  {
  	/* Reset kickstand debounce time */
  	hook_call_deferred(&ks_change_deferred_data, KS_DEBOUNCE_US);
  }
  
  /* I2C port map */
  const struct i2c_port_t i2c_ports[] = {
  	{"power",   I2C_PORT_POWER,  100, GPIO_EC_I2C_POWER_SCL,
  					  GPIO_EC_I2C_POWER_SDA},
  	{"tcpc0",   I2C_PORT_TCPC0, 1000, GPIO_EC_I2C_USB_C0_PD_SCL,
  					  GPIO_EC_I2C_USB_C0_PD_SDA},
  	{"tcpc1",   I2C_PORT_TCPC1, 1000, GPIO_EC_I2C_USB_C1_PD_SCL,
  					  GPIO_EC_I2C_USB_C1_PD_SDA},
  	{"wlc",     I2C_PORT_WLC,    400, GPIO_EC_I2C_WLC_SCL,
  					  GPIO_EC_I2C_WLC_SDA},
  	{"eeprom",  I2C_PORT_EEPROM, 400, GPIO_EC_I2C_EEPROM_SCL,
  					  GPIO_EC_I2C_EEPROM_SDA},
  	{"sensor",  I2C_PORT_SENSOR, 400, GPIO_EC_I2C_SENSOR_SCL,
  					  GPIO_EC_I2C_SENSOR_SDA},
  };
  
  const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
  
  /* ADC channels */
  const struct adc_t adc_channels[] = {
  	/* Measure VBUS through a 1/10 voltage divider */
  	[ADC_VBUS] = {
  		"VBUS",
  		NPCX_ADC_CH1,
  		ADC_MAX_VOLT * 10,
  		ADC_READ_MAX + 1,
  		0
  	},
  	/*
  	 * Adapter current output or battery charging/discharging current (uV)
  	 * 18x amplification on charger side.
  	 */
  	[ADC_AMON_BMON] = {
  		"AMON_BMON",
  		NPCX_ADC_CH2,
  		ADC_MAX_VOLT * 1000 / 18,
  		ADC_READ_MAX + 1,
  		0
  	},
  	/*
  	 * ISL9238 PSYS output is 1.44 uA/W over 5.6K resistor, to read
  	 * 0.8V @ 99 W, i.e. 124000 uW/mV. Using ADC_MAX_VOLT*124000 and
  	 * ADC_READ_MAX+1 as multiplier/divider leads to overflows, so we
  	 * only divide by 2 (enough to avoid precision issues).
  	 */
  	[ADC_PSYS] = {
  		"PSYS",
  		NPCX_ADC_CH3,
  		ADC_MAX_VOLT * 124000 * 2 / (ADC_READ_MAX + 1),
  		2,
  		0
  	},
  	/* Base detection */
  	[ADC_BASE_DET] = {
  		"BASE_DET",
  		NPCX_ADC_CH5,
  		ADC_MAX_VOLT,
  		ADC_READ_MAX + 1,
  		0
  	},
  };
  BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
  
  const struct pwm_t pwm_channels[] = {
  	/* TODO(waihong): Assign a proper frequency. */
  	[PWM_CH_DISPLIGHT] = { .channel = 5, .flags = 0, .freq = 4800 },
  };
  BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
  
  /* Power Path Controller */
  struct ppc_config_t ppc_chips[] = {
  	{
  		.i2c_port = I2C_PORT_TCPC0,
  		.i2c_addr_flags = SN5S330_ADDR0_FLAGS,
  		.drv = &sn5s330_drv
  	},
  	{
  		.i2c_port = I2C_PORT_TCPC1,
  		.i2c_addr_flags = SN5S330_ADDR0_FLAGS,
  		.drv = &sn5s330_drv
  	},
  };
  unsigned int ppc_cnt = ARRAY_SIZE(ppc_chips);
  
  /* TCPC mux configuration */
  const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_MAX_COUNT] = {
  	{
  		.bus_type = EC_BUS_TYPE_I2C,
  		.i2c_info = {
  			.port = I2C_PORT_TCPC0,
  			.addr_flags = PS8751_I2C_ADDR1_FLAGS,
  		},
  		.drv = &ps8xxx_tcpm_drv,
  	},
  	{
  		.bus_type = EC_BUS_TYPE_I2C,
  		.i2c_info = {
  			.port = I2C_PORT_TCPC1,
  			.addr_flags = PS8751_I2C_ADDR1_FLAGS,
  		},
  		.drv = &ps8xxx_tcpm_drv,
  	},
  };
  
  /*
   * Port-0/1 USB mux driver.
   *
   * The USB mux is handled by TCPC chip and the HPD update is through a GPIO
   * to AP. But the TCPC chip is also needed to know the HPD status; otherwise,
   * the mux misbehaves.
   */
  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,
  	}
  };
  
  /* BC1.2 */
  const struct pi3usb9201_config_t pi3usb9201_bc12_chips[] = {
  	{
  		.i2c_port = I2C_PORT_POWER,
  		.i2c_addr_flags = PI3USB9201_I2C_ADDR_3_FLAGS,
  	},
  	{
  		.i2c_port = I2C_PORT_EEPROM,
  		.i2c_addr_flags = PI3USB9201_I2C_ADDR_3_FLAGS,
  	},
  };
  
  /* Mutexes */
  static struct mutex g_lid_mutex;
  
  static struct bmi_drv_data_t g_bmi160_data;
  static struct bmi_drv_data_t g_bmi260_data;
  
  bool is_bmi260_present;
  
  /* Matrix to rotate accelerometer 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[] = {
  	/*
  	 * 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_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_SENSOR,
  	 .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 = {
  		 [SENSOR_CONFIG_EC_S0] = {
  			 .odr = 10000 | ROUND_UP_FLAG,
  		 },
  	 },
  	},
  	[LID_GYRO] = {
  	 .name = "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_SENSOR,
  	 .i2c_spi_addr_flags = BMI160_ADDR0_FLAGS,
  	 .default_range = 1000, /* dps */
  	 .rot_standard_ref = &lid_standard_ref,
  	 .min_frequency = BMI_GYRO_MIN_FREQ,
  	 .max_frequency = BMI_GYRO_MAX_FREQ,
  	},
  };
  
  struct motion_sensor_t motion_sensors_260[] = {
  	/*
  	 * Note: bmi260: 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_S3,
  	 .chip = MOTIONSENSE_CHIP_BMI260,
  	 .type = MOTIONSENSE_TYPE_ACCEL,
  	 .location = MOTIONSENSE_LOC_LID,
  	 .drv = &bmi260_drv,
  	 .mutex = &g_lid_mutex,
  	 .drv_data = &g_bmi260_data,
  	 .port = I2C_PORT_SENSOR,
  	 .i2c_spi_addr_flags = BMI260_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 = {
  		 [SENSOR_CONFIG_EC_S0] = {
  			 .odr = 10000 | ROUND_UP_FLAG,
  		 },
  	 },
  	},
  	[LID_GYRO] = {
  	 .name = "Gyro",
  	 .active_mask = SENSOR_ACTIVE_S0_S3,
  	 .chip = MOTIONSENSE_CHIP_BMI260,
  	 .type = MOTIONSENSE_TYPE_GYRO,
  	 .location = MOTIONSENSE_LOC_LID,
  	 .drv = &bmi260_drv,
  	 .mutex = &g_lid_mutex,
  	 .drv_data = &g_bmi260_data,
  	 .port = I2C_PORT_SENSOR,
  	 .i2c_spi_addr_flags = BMI260_ADDR0_FLAGS,
  	 .default_range = 1000, /* dps */
  	 .rot_standard_ref = &lid_standard_ref,
  	 .min_frequency = BMI_GYRO_MIN_FREQ,
  	 .max_frequency = BMI_GYRO_MAX_FREQ,
  	},
  };
  
  const unsigned int motion_sensor_count = ARRAY_SIZE(motion_sensors);
  
  static void board_detect_motionsensor(void)
  {
  	int val = -1;
  
  	if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
  		return;
  
  	/* Check base accelgyro chip */
  	bmi_read8(motion_sensors[LID_ACCEL].port,
  		motion_sensors[LID_ACCEL].i2c_spi_addr_flags,
  		BMI260_CHIP_ID, &val);
  	if (val == BMI260_CHIP_ID_MAJOR) {
  		motion_sensors[LID_ACCEL] = motion_sensors_260[LID_ACCEL];
  		motion_sensors[LID_GYRO] = motion_sensors_260[LID_GYRO];
  		is_bmi260_present = 1;
  	} else {
  		is_bmi260_present = 0;
  	}
  }
  DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_detect_motionsensor,
  	     HOOK_PRIO_DEFAULT);
  DECLARE_HOOK(HOOK_INIT, board_detect_motionsensor, HOOK_PRIO_DEFAULT + 1);
  
  void motion_interrupt(enum gpio_signal signal)
  {
  	if (is_bmi260_present) {
  		bmi260_interrupt(signal);
  	} else {
  		bmi160_interrupt(signal);
  	}
  }
  
  /* Initialize board. */
  static void board_init(void)
  {
  	/*
  	 * The rev-1 hardware doesn't have the external pull-up fix for the bug
  	 * b/177611071. It requires rework to stuff the resistor. For people who
  	 * has difficulty to do the rework, this is a workaround, which makes
  	 * the GPIO push-pull, instead of open-drain.
  	 */
  	if (system_get_board_version() == 1)
  		gpio_set_flags(GPIO_HIBERNATE_L, GPIO_OUTPUT);
  
  	/* Enable BC1.2 interrupts */
  	gpio_enable_interrupt(GPIO_USB_C0_BC12_INT_L);
  	gpio_enable_interrupt(GPIO_USB_C1_BC12_INT_L);
  	gpio_enable_interrupt(GPIO_ACCEL_GYRO_INT_L);
  
  	/*
  	 * The H1 SBU line for CCD are behind PPC chip. The PPC internal FETs
  	 * for SBU may be disconnected after DP alt mode is off. Should enable
  	 * the CCD_MODE_ODL interrupt to make sure the SBU FETs are connected.
  	 */
  	gpio_enable_interrupt(GPIO_CCD_MODE_ODL);
  
  	/* Set the backlight duty cycle to 0. AP will override it later. */
  	pwm_set_duty(PWM_CH_DISPLIGHT, 0);
  }
  DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);
  
  __overridable uint16_t board_get_ps8xxx_product_id(int port)
  {
  	/* Coachz board rev 2+ changes TCPC from 8805 to 8755*/
  	if (system_get_board_version() < 2)
  		return PS8805_PRODUCT_ID;
  
  	return PS8755_PRODUCT_ID;
  }
  
  void board_tcpc_init(void)
  {
  	/* Only reset TCPC if not sysjump */
  	if (!system_jumped_late()) {
  		/* TODO(crosbug.com/p/61098): How long do we need to wait? */
  		board_reset_pd_mcu();
  	}
  
  	/* Enable PPC interrupts */
  	gpio_enable_interrupt(GPIO_USB_C0_SWCTL_INT_ODL);
  
  	/* Enable TCPC interrupts */
  	gpio_enable_interrupt(GPIO_USB_C0_PD_INT_ODL);
  	gpio_enable_interrupt(GPIO_USB_C1_PD_INT_ODL);
  
  	/*
  	 * Initialize HPD to low; after sysjump SOC needs to see
  	 * HPD pulse to enable video path
  	 */
  	for (int port = 0; port < CONFIG_USB_PD_PORT_MAX_COUNT; ++port)
  		usb_mux_hpd_update(port, USB_PD_MUX_HPD_LVL_DEASSERTED |
  					 USB_PD_MUX_HPD_IRQ_DEASSERTED);
  }
  DECLARE_HOOK(HOOK_INIT, board_tcpc_init, HOOK_PRIO_INIT_I2C+1);
  
  void board_hibernate(void)
  {
  	int i;
  
  	/*
  	 * Sensors are unpowered in hibernate. Apply PD to the
  	 * interrupt lines such that they don't float.
  	 */
  	gpio_set_flags(GPIO_ACCEL_GYRO_INT_L,
  		       GPIO_INPUT | GPIO_PULL_DOWN);
  
  	/*
  	 * Board rev 1+ has the hardware fix. Don't need the following
  	 * workaround.
  	 */
  	if (system_get_board_version() >= 1)
  		return;
  
  	/*
  	 * Enable the PPC power sink path before EC enters hibernate;
  	 * otherwise, ACOK won't go High and can't wake EC up. Check the
  	 * bug b/170324206 for details.
  	 */
  	for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++)
  		ppc_vbus_sink_enable(i, 1);
  }
  
  /* Called on AP S0 -> S3 transition */
  static void board_chipset_suspend(void)
  {
  	/*
  	 * Turn off display backlight in S3. AP has its own control. The EC's
  	 * and the AP's will be AND'ed together in hardware.
  	 */
  	gpio_set_level(GPIO_ENABLE_BACKLIGHT, 0);
  	pwm_enable(PWM_CH_DISPLIGHT, 0);
  }
  DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT);
  
  /* Called on AP S3 -> S0 transition */
  static void board_chipset_resume(void)
  {
  	/* Turn on display and keyboard backlight in S0. */
  	gpio_set_level(GPIO_ENABLE_BACKLIGHT, 1);
  	if (pwm_get_duty(PWM_CH_DISPLIGHT))
  		pwm_enable(PWM_CH_DISPLIGHT, 1);
  }
  DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
  
  void board_set_switchcap_power(int enable)
  {
  	gpio_set_level(GPIO_SWITCHCAP_ON, enable);
  }
  
  int board_is_switchcap_enabled(void)
  {
  	return gpio_get_level(GPIO_SWITCHCAP_ON);
  }
  
  int board_is_switchcap_power_good(void)
  {
  	return gpio_get_level(GPIO_DA9313_GPIO0);
  }
  
  void board_reset_pd_mcu(void)
  {
  	cprints(CC_USB, "Resetting TCPCs...");
  	cflush();
  
  	gpio_set_level(GPIO_USB_C0_PD_RST_L, 0);
  	gpio_set_level(GPIO_USB_C1_PD_RST_L, 0);
  	msleep(PS8XXX_RESET_DELAY_MS);
  	gpio_set_level(GPIO_USB_C0_PD_RST_L, 1);
  	gpio_set_level(GPIO_USB_C1_PD_RST_L, 1);
  }
  
  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_vbus_sink_enable(int port, int enable)
  {
  	/* Both ports are controlled by PPC SN5S330 */
  	return ppc_vbus_sink_enable(port, enable);
  }
  
  int board_is_sourcing_vbus(int port)
  {
  	/* Both ports are controlled by PPC SN5S330 */
  	return ppc_is_sourcing_vbus(port);
  }
  
  void board_overcurrent_event(int port, int is_overcurrented)
  {
  	/* TODO(b/120231371): Notify AP */
  	CPRINTS("p%d: overcurrent!", port);
  }
  
  int board_set_active_charge_port(int port)
  {
  	int is_real_port = (port >= 0 &&
  			    port < CONFIG_USB_PD_PORT_MAX_COUNT);
  	int i;
  
  	if (!is_real_port && port != CHARGE_PORT_NONE)
  		return EC_ERROR_INVAL;
  
  	if (port == CHARGE_PORT_NONE) {
  		CPRINTS("Disabling all charging port");
  
  		/* Disable all ports. */
  		for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
  			/*
  			 * Do not return early if one fails otherwise we can
  			 * get into a boot loop assertion failure.
  			 */
  			if (board_vbus_sink_enable(i, 0))
  				CPRINTS("Disabling p%d sink path failed.", i);
  		}
  
  		return EC_SUCCESS;
  	}
  
  	/* Check if the port is sourcing VBUS. */
  	if (board_is_sourcing_vbus(port)) {
  		CPRINTS("Skip enable p%d", port);
  		return EC_ERROR_INVAL;
  	}
  
  
  	CPRINTS("New charge port: p%d", port);
  
  	/*
  	 * Turn off the other ports' sink path FETs, before enabling the
  	 * requested charge port.
  	 */
  	for (i = 0; i < CONFIG_USB_PD_PORT_MAX_COUNT; i++) {
  		if (i == port)
  			continue;
  
  		if (board_vbus_sink_enable(i, 0))
  			CPRINTS("p%d: sink path disable failed.", i);
  	}
  
  	/* Enable requested charge port. */
  	if (board_vbus_sink_enable(port, 1)) {
  		CPRINTS("p%d: sink path enable failed.", port);
  		return EC_ERROR_UNKNOWN;
  	}
  
  	return EC_SUCCESS;
  }
  
  void board_set_charge_limit(int port, int supplier, int charge_ma,
  			    int max_ma, int charge_mv)
  {
  	/*
  	 * Ignore lower charge ceiling on PD transition if our battery is
  	 * critical, as we may brownout.
  	 */
  	if (supplier == CHARGE_SUPPLIER_PD &&
  	    charge_ma < 1500 &&
  	    charge_get_percent() < CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON) {
  		CPRINTS("Using max ilim %d", max_ma);
  		charge_ma = max_ma;
  	}
  
  	charge_ma = charge_ma * 95 / 100;
  	charge_set_input_current_limit(MAX(charge_ma,
  					   CONFIG_CHARGER_INPUT_CURRENT),
  				       charge_mv);
  }
  
  uint16_t tcpc_get_alert_status(void)
  {
  	uint16_t status = 0;
  
  	if (!gpio_get_level(GPIO_USB_C0_PD_INT_ODL))
  		if (gpio_get_level(GPIO_USB_C0_PD_RST_L))
  			status |= PD_STATUS_TCPC_ALERT_0;
  	if (!gpio_get_level(GPIO_USB_C1_PD_INT_ODL))
  		if (gpio_get_level(GPIO_USB_C1_PD_RST_L))
  			status |= PD_STATUS_TCPC_ALERT_1;
  
  	return status;
  }
  
  int battery_get_vendor_param(uint32_t param, uint32_t *value)
  {
  	int rv;
  	uint8_t data[16] = {};
  
  	/* only allow reading 0x70~0x7F, 16 byte data */
  	if (param < 0x70 || param >= 0x80)
  		return EC_ERROR_ACCESS_DENIED;
  
  	rv = sb_read_string(0x70, data, sizeof(data));
  	if (rv)
  		return rv;
  
  	*value = data[param - 0x70];
  	return EC_SUCCESS;
  }
  
  int battery_set_vendor_param(uint32_t param, uint32_t value)
  {
  	return EC_ERROR_UNIMPLEMENTED;
  }
  