board: Add reef_mchp board.

Create a new board reef_mchp based on production reef board
with original EC replaced with MEC1701 on interposer board.

BRANCH=none
BUG=none
TEST=Build and flash into board. Requires CoreBoot and
ChromiumOS rebuilt with cros_mec USE flag.

Change-Id: Ib93063586ca3b71f98d19c91d974138f880e5fd0
Signed-off-by: scott worley <scott.worley@microchip.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/1054729
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>

1 files changed, 1232 insertions, 0 deletions

diff --git a/board/reef_mchp/board.c b/board/reef_mchp/board.c
new file mode 100644
index 0000000000..4efe7dcdb3
--- /dev/null
+++ b/board/reef_mchp/board.c
@@ -0,0 +1,1232 @@
+/* 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.
+ */
+
+/* Reef board-specific configuration */
+
+#include "adc.h"
+#include "adc_chip.h"
+#include "als.h"
+#include "button.h"
+#include "charge_manager.h"
+#include "charge_ramp.h"
+#include "charge_state.h"
+#include "charger.h"
+#include "chipset.h"
+#include "console.h"
+#include "driver/als_opt3001.h"
+#include "driver/accel_kionix.h"
+#include "driver/accel_kx022.h"
+#include "driver/accelgyro_bmi160.h"
+#include "driver/baro_bmp280.h"
+#include "driver/charger/bd9995x.h"
+#include "driver/tcpm/anx74xx.h"
+#include "driver/tcpm/ps8xxx.h"
+#include "driver/tcpm/tcpci.h"
+#include "driver/tcpm/tcpm.h"
+#include "extpower.h"
+#include "gpio.h"
+#include "hooks.h"
+#include "host_command.h"
+#include "i2c.h"
+#include "keyboard_scan.h"
+#include "lid_angle.h"
+#include "lid_switch.h"
+#include "math_util.h"
+#include "motion_sense.h"
+#include "motion_lid.h"
+#include "power.h"
+#include "power_button.h"
+#include "pwm.h"
+#include "pwm_chip.h"
+#include "lpc_chip.h"
+#include "spi.h"
+#include "spi_chip.h"
+#include "switch.h"
+#include "system.h"
+#include "tablet_mode.h"
+#include "task.h"
+#include "temp_sensor.h"
+#include "tfdp_chip.h"
+#include "thermistor.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 CPUTS(outstr) cputs(CC_USBCHARGE, outstr)
+#define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args)
+#define CPRINTF(format, args...) cprintf(CC_USBCHARGE, format, ## args)
+
+#define IN_ALL_SYS_PG	POWER_SIGNAL_MASK(X86_ALL_SYS_PG)
+#define IN_PGOOD_PP3300	POWER_SIGNAL_MASK(X86_PGOOD_PP3300)
+#define IN_PGOOD_PP5000	POWER_SIGNAL_MASK(X86_PGOOD_PP5000)
+
+#define USB_PD_PORT_ANX74XX	0
+#define USB_PD_PORT_PS8751	1
+
+#ifdef CONFIG_BOARD_PRE_INIT
+/*
+ * reefmchp - requires changing
+ * VTR1 pin domain = 3.3V
+ * VTR2 pin domain = 1.8V
+ * VTR3 pin domain = 3.3V
+ */
+void board_config_pre_init(void)
+{
+	MCHP_EC_GPIO_BANK_PWR = MCHP_EC_GPIO_BANK_PWR_VTR2_18;
+
+#ifdef CONFIG_LOW_POWER_IDLE
+	/* DEBUG - GPIO_0060 becomes 48MHZ_OUT
+	 * MEC1701 interposer J47-7
+	 */
+	gpio_config_module(MODULE_CHIPSET, 1);
+#endif
+}
+#endif
+
+/*
+ * NOTES: The PD GPIO's are armed for falling edge.
+ * There is a potential race condition in this routine.
+ * ISR calls this routine and it reads state of GPIO pin.
+ * If GPIO is still asserted low, this routine will do nothing.
+ * If this routine samples GPIO after it returns high then it
+ * will wake the PDCMD task.
+ */
+static void tcpc_alert_event(enum gpio_signal signal)
+{
+	if ((signal == GPIO_USB_C0_PD_INT_ODL) &&
+			!gpio_get_level(GPIO_USB_C0_PD_RST_L))
+		return;
+
+	if ((signal == GPIO_USB_C1_PD_INT_ODL) &&
+			!gpio_get_level(GPIO_USB_C1_PD_RST_ODL))
+		return;
+
+#ifdef HAS_TASK_PDCMD
+	/* Exchange status with TCPCs */
+	host_command_pd_send_status(PD_CHARGE_NO_CHANGE);
+#endif
+}
+
+#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
+static void anx74xx_cable_det_handler(void)
+{
+	int cable_det = gpio_get_level(GPIO_USB_C0_CABLE_DET);
+	int reset_n = gpio_get_level(GPIO_USB_C0_PD_RST_L);
+
+	/*
+	 * A cable_det low->high transition was detected. If following the
+	 * debounce time, cable_det is high, and reset_n is low, then ANX3429 is
+	 * currently in standby mode and needs to be woken up. Set the
+	 * TCPC_RESET event which will bring the ANX3429 out of standby
+	 * mode. Setting this event is gated on reset_n being low because the
+	 * ANX3429 will always set cable_det when transitioning to normal mode
+	 * and if in normal mode, then there is no need to trigger a tcpc reset.
+	 */
+	if (cable_det && !reset_n)
+		task_set_event(TASK_ID_PD_C0, PD_EVENT_TCPC_RESET, 0);
+}
+DECLARE_DEFERRED(anx74xx_cable_det_handler);
+/* from firmware-reef-9042.B */
+DECLARE_HOOK(HOOK_CHIPSET_RESUME, anx74xx_cable_det_handler, HOOK_PRIO_LAST);
+
+void anx74xx_cable_det_interrupt(enum gpio_signal signal)
+{
+	/* debounce for 2 msec */
+	hook_call_deferred(&anx74xx_cable_det_handler_data, (2 * MSEC));
+}
+#endif
+
+/*
+ * 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.
+ * Use DECLARE_DEFERRED to generate enable_input_devices_data.
+ */
+static void enable_input_devices(void);
+DECLARE_DEFERRED(enable_input_devices);
+
+#define LID_DEBOUNCE_US    (30 * MSEC)  /* Debounce time for lid switch */
+void tablet_mode_interrupt(enum gpio_signal signal)
+{
+	hook_call_deferred(&enable_input_devices_data, LID_DEBOUNCE_US);
+}
+
+#include "gpio_list.h"
+
+/* power signal list.  Must match order of enum power_signal. */
+const struct power_signal_info power_signal_list[] = {
+#ifdef CONFIG_POWER_S0IX
+	{GPIO_PCH_SLP_S0_L,
+		POWER_SIGNAL_ACTIVE_HIGH | POWER_SIGNAL_DISABLE_AT_BOOT,
+		"SLP_S0_DEASSERTED"},
+#endif
+	{GPIO_RSMRST_L_PGOOD, POWER_SIGNAL_ACTIVE_HIGH,
+		"RSMRST_L"},
+	{GPIO_PCH_SLP_S3_L,   POWER_SIGNAL_ACTIVE_HIGH,
+		"SLP_S3_DEASSERTED"},
+	{GPIO_PCH_SLP_S4_L,   POWER_SIGNAL_ACTIVE_HIGH,
+		"SLP_S4_DEASSERTED"},
+	{GPIO_SUSPWRNACK,     POWER_SIGNAL_ACTIVE_HIGH,
+	 "SUSPWRNACK_DEASSERTED"},
+	{GPIO_ALL_SYS_PGOOD,  POWER_SIGNAL_ACTIVE_HIGH,
+		"ALL_SYS_PGOOD"},
+	{GPIO_PP3300_PG,      POWER_SIGNAL_ACTIVE_HIGH, "PP3300_PG"},
+	{GPIO_PP5000_PG,      POWER_SIGNAL_ACTIVE_HIGH, "PP5000_PG"},
+};
+BUILD_ASSERT(ARRAY_SIZE(power_signal_list) == POWER_SIGNAL_COUNT);
+
+/* SPI devices */
+const struct spi_device_t spi_devices[] = {
+	{ QMSPI0_PORT, 4, GPIO_QMSPI_CS0},
+#if defined(CONFIG_SPI_ACCEL_PORT)
+	{ GPSPI0_PORT, 2, GPIO_SPI0_CS0 },
+#endif
+};
+const unsigned int spi_devices_used = ARRAY_SIZE(spi_devices);
+
+/* ADC channels */
+/* chip/mchp defined adc_t
+ * name, factor_mul, factor_div, shift, channel
+ * Signals routed through interposer to MEC17xx ADC channels.
+ */
+const struct adc_t adc_channels[] = {
+	/* Vref = 3.000V, 10-bit unsigned reading */
+	[ADC_TEMP_SENSOR_CHARGER] = {
+		"CHARGER", 3000, 1024, 0, 0
+	},
+	[ADC_TEMP_SENSOR_AMB] = {
+		"AMBIENT", 3000, 1024, 0, 1
+	},
+	[ADC_BOARD_ID] = {
+		"BRD_ID", 3000, 1024, 0, 2
+	},
+};
+BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
+
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
+#ifdef CONFIG_PWM
+const struct pwm_t pwm_channels[] = {
+	/* channel, flags */
+	[PWM_CH_LED_GREEN] = { 4, PWM_CONFIG_DSLEEP },
+	[PWM_CH_LED_RED] =   { 5, PWM_CONFIG_DSLEEP },
+};
+BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
+#endif /* #ifdef CONFIG_PWM */
+
+/*
+ * Using Ports 3, 6, 7 from board.h
+ * Using Ports 0, 2 from board.c
+ * Due to added RC of interposer board temporarily reduce
+ * 400 to 100 kHz.
+ */
+const struct i2c_port_t i2c_ports[]  = {
+	{"tcpc0",     MCHP_I2C_PORT0, 400,
+		GPIO_EC_I2C_USB_C0_PD_SCL, GPIO_EC_I2C_USB_C0_PD_SDA},
+	{"tcpc1",     MCHP_I2C_PORT2, 400,
+		GPIO_EC_I2C_USB_C1_PD_SCL, GPIO_EC_I2C_USB_C1_PD_SDA},
+	{"accelgyro", I2C_PORT_GYRO, 400,
+		GPIO_EC_I2C_GYRO_SCL,      GPIO_EC_I2C_GYRO_SDA},
+	{"sensors",   MCHP_I2C_PORT7, 400,
+		GPIO_EC_I2C_SENSOR_SCL,    GPIO_EC_I2C_SENSOR_SDA},
+	{"batt",      MCHP_I2C_PORT3, 100,
+		GPIO_EC_I2C_POWER_SCL,     GPIO_EC_I2C_POWER_SDA},
+};
+const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
+
+/*
+ * Map ports to controller.
+ * Ports may map to the same controller.
+ * Both USB PD ports are mapped to CTRL0.
+ */
+const uint16_t i2c_port_to_ctrl[I2C_PORT_COUNT] = {
+	(MCHP_I2C_CTRL0 << 8) + MCHP_I2C_PORT0,
+	(MCHP_I2C_CTRL0 << 8) + MCHP_I2C_PORT2,
+	(MCHP_I2C_CTRL1 << 8) + I2C_PORT_GYRO,
+	(MCHP_I2C_CTRL2 << 8) + MCHP_I2C_PORT3,
+	(MCHP_I2C_CTRL3 << 8) + MCHP_I2C_PORT7,
+};
+
+/*
+ * Used by chip level I2C controller initialization.
+ * Board level can specify two unused I2C addresses
+ * for each controller. Current chip level disables
+ * controller response to address 0(general call).
+ */
+const uint32_t i2c_ctrl_slave_addrs[I2C_CONTROLLER_COUNT] = {
+	0, 0, 0, 0,
+};
+
+/* Return the two slave addresses the specified
+ * controller will respond to when controller
+ * is acting as a slave.
+ * b[6:0]  = b[7:1] of I2C address 1
+ * b[14:8] = b[7:1] of I2C address 2
+ * When not using I2C controllers as slaves we can use
+ * the same value for all controllers. The address should
+ * not be 0x00 as this is the general call address.
+ */
+uint16_t board_i2c_slave_addrs(int controller)
+{
+	int i;
+
+	for (i = 0; i < I2C_CONTROLLER_COUNT; i++)
+		if ((i2c_ctrl_slave_addrs[i] & 0xffff) == controller)
+			return (i2c_ctrl_slave_addrs[i] >> 16);
+
+	return 0; /* general call address */
+}
+
+/*
+ * default to I2C0 because callers may not check
+ * return value if we returned an error code.
+ */
+int board_i2c_p2c(int port)
+{
+	int i;
+
+	for (i = 0; i < I2C_PORT_COUNT; i++)
+		if ((i2c_port_to_ctrl[i] & 0xFF) == port)
+			return (int)(i2c_port_to_ctrl[i] >> 8);
+
+	return -1;
+}
+
+#ifdef CONFIG_CMD_I2C_STRESS_TEST
+struct i2c_stress_test i2c_stress_tests[] = {
+
+#ifdef CONFIG_CMD_I2C_STRESS_TEST_TCPC
+	{
+		.port = MCHP_I2C_PORT0,
+		.addr = 0x50,
+		.i2c_test = &anx74xx_i2c_stress_test_dev,
+	},
+#endif
+
+#ifdef CONFIG_CMD_I2C_STRESS_TEST_TCPC
+	{
+		.port = MCHP_I2C_PORT2,
+		.addr = 0x16,
+		.i2c_test = &ps8xxx_i2c_stress_test_dev,
+	},
+#endif
+#ifdef CONFIG_CMD_I2C_STRESS_TEST_ACCEL
+	{
+		.port = I2C_PORT_GYRO,
+		.addr = BMI160_ADDR0,
+		.i2c_test = &bmi160_i2c_stress_test_dev,
+	},
+#endif
+#ifdef CONFIG_CMD_I2C_STRESS_TEST_ACCEL
+	{
+		.port = I2C_PORT_BARO,
+		.addr = BMP280_I2C_ADDRESS1,
+		.i2c_test = &bmp280_i2c_stress_test_dev,
+	},
+	{
+		.port = I2C_PORT_LID_ACCEL,
+		.addr = KX022_ADDR1,
+		.i2c_test = &kionix_i2c_stress_test_dev,
+	},
+#endif
+#ifdef CONFIG_CMD_I2C_STRESS_TEST_ALS
+	{
+		.port = I2C_PORT_ALS,
+		.addr = OPT3001_I2C_ADDR1,
+		.i2c_test = &opt3001_i2c_stress_test_dev,
+	},
+#endif
+/* MCHP_I2C_PORT3 */
+#ifdef CONFIG_CMD_I2C_STRESS_TEST_BATTERY
+	{
+		.i2c_test = &battery_i2c_stress_test_dev,
+	},
+#endif
+/* MCHP_I2C_PORT3 */
+#ifdef CONFIG_CMD_I2C_STRESS_TEST_CHARGER
+	{
+		.i2c_test = &bd9995x_i2c_stress_test_dev,
+	},
+#endif
+};
+const int i2c_test_dev_used = ARRAY_SIZE(i2c_stress_tests);
+#endif /* CONFIG_CMD_I2C_STRESS_TEST */
+
+const struct tcpc_config_t tcpc_config[CONFIG_USB_PD_PORT_COUNT] = {
+	[USB_PD_PORT_ANX74XX] = {
+		.i2c_host_port = MCHP_I2C_PORT0,
+		.i2c_slave_addr = 0x50,
+		.drv = &anx74xx_tcpm_drv,
+		.pol = TCPC_ALERT_ACTIVE_LOW,
+	},
+	[USB_PD_PORT_PS8751] = {
+		.i2c_host_port = MCHP_I2C_PORT2,
+		.i2c_slave_addr = 0x16,
+		.drv = &ps8xxx_tcpm_drv,
+		.pol = TCPC_ALERT_ACTIVE_LOW,
+	},
+};
+
+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_ODL))
+			status |= PD_STATUS_TCPC_ALERT_1;
+	}
+
+	return status;
+}
+
+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);
+
+/*
+ * PS8751 TCPM DRP low power idle behavour is causing I2C errors.
+ * Upon receiving DRP low power idle command, PS8751 holds SCL and
+ * SDA low for ~480us. It simultaneously releases both pins which is
+ * defined as a bus error condition by I2C spec. No ACK received.
+ * TCPCI spec. states waking any TCPM requires sending any dummy
+ * I2C command which the TCPM will NACK. The I2C master MUST wait
+ * a minimum of 5 ms after the NACK before sending another I2C
+ * command. We observe the PD task and TCPCI state machines do not
+ * follow the TCPCI spec. Sometimes this routine is called to wake
+ * the PS8751 after it has been put into low power idle and sometimes
+ * the PD/TCPCI state machine doesn't call this routine and tries
+ * communicating with PS8751. This results in lots of I2C retries and
+ * results taking up to 10ms before I2C communication with PS8751
+ * is stable. Don't know how to fix this.
+ */
+static int ps8751_tune_mux(const struct usb_mux *mux)
+{
+	int rv;
+
+	/* 0x98 sets lower EQ of DP port (4.5db) */
+	rv = i2c_write8(MCHP_I2C_PORT2, 0x16,
+		PS8XXX_REG_MUX_DP_EQ_CONFIGURATION, 0x98);
+
+	/* TCPCI spec. delay msleep(6); */
+
+	return rv;
+}
+
+/*
+ * USB_PD_PORT_ANX74XX and USB_PD_PORT_PS8751 are zero based indices into
+ * tcpc_config array. The tcpc_config array contains the actual EC I2C
+ * port, device slave address, and a function pointer into the driver code.
+ */
+struct usb_mux usb_muxes[CONFIG_USB_PD_PORT_COUNT] = {
+	[USB_PD_PORT_ANX74XX] = {
+		.port_addr = USB_PD_PORT_ANX74XX,
+		.driver = &anx74xx_tcpm_usb_mux_driver,
+		.hpd_update = &anx74xx_tcpc_update_hpd_status,
+	},
+	[USB_PD_PORT_PS8751] = {
+		.port_addr = USB_PD_PORT_PS8751,
+		.driver = &tcpci_tcpm_usb_mux_driver,
+		.hpd_update = &ps8xxx_tcpc_update_hpd_status,
+		.board_init = &ps8751_tune_mux,
+	}
+};
+
+/* MCHP
+ * New, not in firmware-reef-9042.B
+ */
+const int usb_port_enable[CONFIG_USB_PORT_POWER_SMART_PORT_COUNT] = {
+	GPIO_USB1_ENABLE,
+};
+
+/**
+ * Power on (or off) a single TCPC.
+ * minimum on/off delays are included.
+ *
+ * @param port	Port number of TCPC.
+ * @param mode	0: power off, 1: power on.
+ */
+void board_set_tcpc_power_mode(int port, int mode)
+{
+	if (port != USB_PD_PORT_ANX74XX)
+		return;
+
+	switch (mode) {
+	case ANX74XX_NORMAL_MODE:
+		gpio_set_level(GPIO_EN_USB_TCPC_PWR, 1);
+		msleep(ANX74XX_PWR_H_RST_H_DELAY_MS);
+		gpio_set_level(GPIO_USB_C0_PD_RST_L, 1);
+		break;
+	case ANX74XX_STANDBY_MODE:
+		gpio_set_level(GPIO_USB_C0_PD_RST_L, 0);
+		msleep(ANX74XX_RST_L_PWR_L_DELAY_MS);
+		gpio_set_level(GPIO_EN_USB_TCPC_PWR, 0);
+		msleep(ANX74XX_PWR_L_PWR_H_DELAY_MS);
+		break;
+	default:
+		break;
+	}
+}
+
+/**
+ * Reset all system PD/TCPC MCUs -- currently only called from
+ * handle_pending_reboot() in common/power.c just before hard
+ * resetting the system. This logic is likely not needed as the
+ * PP3300_A rail should be dropped on EC reset.
+ */
+void board_reset_pd_mcu(void)
+{
+	/* Assert reset to TCPC1 */
+	gpio_set_level(GPIO_USB_C1_PD_RST_ODL, 0);
+
+	/* Assert reset to TCPC0 (anx3429) */
+	gpio_set_level(GPIO_USB_C0_PD_RST_L, 0);
+	/* TCPC1 (ps8751) requires 1ms reset down assertion */
+	msleep(MAX(1, ANX74XX_RST_L_PWR_L_DELAY_MS));
+
+	/* Deassert reset to TCPC1 */
+	gpio_set_level(GPIO_USB_C1_PD_RST_ODL, 1);
+	/* Disable TCPC0 power */
+	gpio_set_level(GPIO_EN_USB_TCPC_PWR, 0);
+
+	/*
+	 * anx3429 requires 10ms reset/power down assertion
+	 */
+	msleep(ANX74XX_PWR_L_PWR_H_DELAY_MS);
+	board_set_tcpc_power_mode(USB_PD_PORT_ANX74XX, 1);
+}
+
+void board_tcpc_init(void)
+{
+	int port, reg;
+
+	/* Only reset TCPC if not sysjump */
+	if (!system_jumped_to_this_image())
+		board_reset_pd_mcu();
+
+	/*
+	 * TODO: Remove when Reef is updated with PS8751 A3.
+	 *
+	 * Force PS8751 A2 to wake from low power mode.
+	 * If PS8751 remains in low power mode after sysjump,
+	 * TCPM_INIT will fail due to not able to access PS8751.
+	 *
+	 * NOTE: PS8751 A3 will wake on any I2C access.
+	 */
+	reg = 0;
+	/* TODO MCHP:
+	 * PS8751 is at I2C address 0x16. Original reef using
+	 * address 0x10. Is this another attempt at waking PS8751
+	 * from DRP low power idle mode?
+	 */
+	i2c_read8(MCHP_I2C_PORT2, 0x10, 0xA0, &reg);
+
+	/* Enable TCPC0 interrupt */
+	gpio_enable_interrupt(GPIO_USB_C0_PD_INT_ODL);
+
+	/* Enable TCPC1 interrupt */
+	gpio_enable_interrupt(GPIO_USB_C1_PD_INT_ODL);
+
+#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
+	/* Enable CABLE_DET interrupt for ANX3429 wake from standby */
+	gpio_enable_interrupt(GPIO_USB_C0_CABLE_DET);
+#endif
+	/*
+	 * Initialize HPD to low; after sysjump SOC needs to see
+	 * HPD pulse to enable video path
+	 */
+	for (port = 0; port < CONFIG_USB_PD_PORT_COUNT; port++) {
+		const struct usb_mux *mux = &usb_muxes[port];
+
+		mux->hpd_update(port, 0, 0);
+	}
+}
+DECLARE_HOOK(HOOK_INIT, board_tcpc_init, HOOK_PRIO_INIT_I2C+1);
+
+/*
+ * Data derived from Seinhart-Hart equation in a resistor divider circuit with
+ * Vdd=3300mV, R = 13.7Kohm, and Murata NCP15WB-series thermistor (B = 4050,
+ * T0 = 298.15, nominal resistance (R0) = 47Kohm).
+ */
+#define CHARGER_THERMISTOR_SCALING_FACTOR 13
+static const struct thermistor_data_pair charger_thermistor_data[] = {
+	{ 3044 / CHARGER_THERMISTOR_SCALING_FACTOR, 0 },
+	{ 2890 / CHARGER_THERMISTOR_SCALING_FACTOR, 10 },
+	{ 2680 / CHARGER_THERMISTOR_SCALING_FACTOR, 20 },
+	{ 2418 / CHARGER_THERMISTOR_SCALING_FACTOR, 30 },
+	{ 2117 / CHARGER_THERMISTOR_SCALING_FACTOR, 40 },
+	{ 1800 / CHARGER_THERMISTOR_SCALING_FACTOR, 50 },
+	{ 1490 / CHARGER_THERMISTOR_SCALING_FACTOR, 60 },
+	{ 1208 / CHARGER_THERMISTOR_SCALING_FACTOR, 70 },
+	{ 966 / CHARGER_THERMISTOR_SCALING_FACTOR, 80 },
+	{ 860 / CHARGER_THERMISTOR_SCALING_FACTOR, 85 },
+	{ 766 / CHARGER_THERMISTOR_SCALING_FACTOR, 90 },
+	{ 679 / CHARGER_THERMISTOR_SCALING_FACTOR, 95 },
+	{ 603 / CHARGER_THERMISTOR_SCALING_FACTOR, 100 },
+};
+
+static const struct thermistor_info charger_thermistor_info = {
+	.scaling_factor = CHARGER_THERMISTOR_SCALING_FACTOR,
+	.num_pairs = ARRAY_SIZE(charger_thermistor_data),
+	.data = charger_thermistor_data,
+};
+
+int board_get_charger_temp(int idx, int *temp_ptr)
+{
+	int mv = adc_read_channel(MCHP_ADC_CH(0));
+
+	if (mv < 0)
+		return -1;
+
+	*temp_ptr = thermistor_linear_interpolate(mv,
+		&charger_thermistor_info);
+	*temp_ptr = C_TO_K(*temp_ptr);
+	return 0;
+}
+
+/*
+ * Data derived from Seinhart-Hart equation in a resistor divider circuit with
+ * Vdd=3300mV, R = 51.1Kohm, and Murata NCP15WB-series thermistor (B = 4050,
+ * T0 = 298.15, nominal resistance (R0) = 47Kohm).
+ */
+#define AMB_THERMISTOR_SCALING_FACTOR 11
+static const struct thermistor_data_pair amb_thermistor_data[] = {
+	{ 2512 / AMB_THERMISTOR_SCALING_FACTOR, 0 },
+	{ 2158 / AMB_THERMISTOR_SCALING_FACTOR, 10 },
+	{ 1772 / AMB_THERMISTOR_SCALING_FACTOR, 20 },
+	{ 1398 / AMB_THERMISTOR_SCALING_FACTOR, 30 },
+	{ 1070 / AMB_THERMISTOR_SCALING_FACTOR, 40 },
+	{ 803 / AMB_THERMISTOR_SCALING_FACTOR, 50 },
+	{ 597 / AMB_THERMISTOR_SCALING_FACTOR, 60 },
+	{ 443 / AMB_THERMISTOR_SCALING_FACTOR, 70 },
+	{ 329 / AMB_THERMISTOR_SCALING_FACTOR, 80 },
+	{ 285 / AMB_THERMISTOR_SCALING_FACTOR, 85 },
+	{ 247 / AMB_THERMISTOR_SCALING_FACTOR, 90 },
+	{ 214 / AMB_THERMISTOR_SCALING_FACTOR, 95 },
+	{ 187 / AMB_THERMISTOR_SCALING_FACTOR, 100 },
+};
+
+static const struct thermistor_info amb_thermistor_info = {
+	.scaling_factor = AMB_THERMISTOR_SCALING_FACTOR,
+	.num_pairs = ARRAY_SIZE(amb_thermistor_data),
+	.data = amb_thermistor_data,
+};
+
+int board_get_ambient_temp(int idx, int *temp_ptr)
+{
+	int mv = adc_read_channel(MCHP_ADC_CH(1));
+
+	if (mv < 0)
+		return -1;
+
+	*temp_ptr = thermistor_linear_interpolate(mv,
+		&amb_thermistor_info);
+	*temp_ptr = C_TO_K(*temp_ptr);
+	return 0;
+}
+
+/*
+ * name, sensor type, read function,
+ * index of sensor passed to read function,
+ * delay from read to taking action
+ */
+const struct temp_sensor_t temp_sensors[] = {
+	/* FIXME(dhendrix): tweak action_delay_sec */
+	{"Battery", TEMP_SENSOR_TYPE_BATTERY, charge_get_battery_temp, 0, 1},
+	{"Ambient", TEMP_SENSOR_TYPE_BOARD, board_get_ambient_temp, 0, 5},
+	{"Charger", TEMP_SENSOR_TYPE_BOARD, board_get_charger_temp, 1, 1},
+};
+BUILD_ASSERT(ARRAY_SIZE(temp_sensors) == TEMP_SENSOR_COUNT);
+
+/* Called by APL power state machine when transitioning from G3 to S5 */
+void chipset_pre_init_callback(void)
+{
+	/*
+	 * No need to re-init PMIC since settings are sticky across sysjump.
+	 * However, be sure to check that PMIC is already enabled. If it is
+	 * then there's no need to re-sequence the PMIC.
+	 */
+	if (system_jumped_to_this_image() && gpio_get_level(GPIO_PMIC_EN))
+		return;
+
+	/* Enable PP5000 before PP3300 due to NFC: chrome-os-partner:50807 */
+	gpio_set_level(GPIO_EN_PP5000, 1);
+	while (!gpio_get_level(GPIO_PP5000_PG))
+		;
+
+	/*
+	 * To prevent SLP glitches, PMIC_EN (V5A_EN) should be enabled
+	 * at the same time as PP3300 (chrome-os-partner:51323).
+	 */
+	/* Enable 3.3V rail */
+	gpio_set_level(GPIO_EN_PP3300, 1);
+	while (!gpio_get_level(GPIO_PP3300_PG))
+		;
+
+	/* Enable PMIC */
+	gpio_set_level(GPIO_PMIC_EN, 1);
+}
+
+static void board_set_tablet_mode(void)
+{
+	tablet_set_mode(!gpio_get_level(GPIO_TABLET_MODE_L));
+}
+
+/* Initialize board. */
+static void board_init(void)
+{
+	/* Ensure tablet mode is initialized according to the hardware state
+	 * so that the cached state reflects reality.
+	 */
+	board_set_tablet_mode();
+
+	gpio_enable_interrupt(GPIO_TABLET_MODE_L);
+
+	/* Enable charger interrupts */
+	gpio_enable_interrupt(GPIO_CHARGER_INT_L);
+
+	/* Enable Gyro interrupts */
+	gpio_enable_interrupt(GPIO_BASE_SIXAXIS_INT_L);
+}
+/* PP3300 needs to be enabled before TCPC init hooks */
+DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_FIRST);
+
+/*
+ * MCHP - new version of this routine.
+ * firmware-reef-9042.B must do port lookup here
+ * before calling bd9995x_is_vbus_provided
+ */
+int pd_snk_is_vbus_provided(int port)
+{
+	if (port != 0 && port != 1)
+		panic("Invalid charge port\n");
+
+	return bd9995x_is_vbus_provided(port);
+}
+
+/**
+ * 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)
+{
+	enum bd9995x_charge_port bd9995x_port;
+	int bd9995x_port_select = 1;
+
+	switch (charge_port) {
+	case USB_PD_PORT_ANX74XX:
+	case USB_PD_PORT_PS8751:
+		/* Don't charge from a source port */
+		if (board_vbus_source_enabled(charge_port))
+			return -1;
+
+		bd9995x_port = charge_port;
+		break;
+	case CHARGE_PORT_NONE:
+		bd9995x_port_select = 0;
+		bd9995x_port = BD9995X_CHARGE_PORT_BOTH;
+
+		/*
+		 * To avoid inrush current from the external charger, enable
+		 * discharge on AC till the new charger is detected and
+		 * charge detect delay has passed.
+		 */
+		if (charge_get_percent() > 2)
+			charger_discharge_on_ac(1);
+		break;
+	default:
+		panic("Invalid charge port\n");
+		break;
+	}
+
+	CPRINTS("New chg p%d", charge_port);
+	return bd9995x_select_input_port(bd9995x_port, bd9995x_port_select);
+}
+
+/**
+ * Set the charge limit based upon desired maximum.
+ *
+ * @param port          Port number.
+ * @param supplier      Charge supplier type.
+ * @param charge_ma     Desired charge limit (mA).
+ * @param charge_mv     Negotiated charge voltage (mV).
+ */
+void board_set_charge_limit(int port, int supplier, int charge_ma,
+			    int max_ma, int charge_mv)
+{
+	/* Enable charging trigger by BC1.2 detection */
+	int bc12_enable = (supplier == CHARGE_SUPPLIER_BC12_CDP ||
+			   supplier == CHARGE_SUPPLIER_BC12_DCP ||
+			   supplier == CHARGE_SUPPLIER_BC12_SDP ||
+			   supplier == CHARGE_SUPPLIER_OTHER);
+
+	if (bd9995x_bc12_enable_charging(port, bc12_enable))
+		return;
+
+	charge_ma = (charge_ma * 95) / 100;
+	charge_set_input_current_limit(MAX(charge_ma,
+			CONFIG_CHARGER_INPUT_CURRENT), charge_mv);
+}
+
+/*
+ * MCHP next two functions from production firmware-reef-9042.B
+ * Have changes to USB PD common and TCPCI driver code deprecated
+ * these functions?
+ */
+/**
+ * Return whether ramping is allowed for given supplier
+ */
+int board_is_ramp_allowed(int supplier)
+{
+	/* Don't allow ramping in RO when write protected */
+	if (system_get_image_copy() != SYSTEM_IMAGE_RW
+		&& system_is_locked())
+		return 0;
+	else
+		return (supplier == CHARGE_SUPPLIER_BC12_DCP ||
+			supplier == CHARGE_SUPPLIER_BC12_SDP ||
+			supplier == CHARGE_SUPPLIER_BC12_CDP ||
+			supplier == CHARGE_SUPPLIER_OTHER);
+}
+
+/**
+ * Return if board is consuming full amount of input current
+ */
+int board_is_consuming_full_charge(void)
+{
+	int chg_perc = charge_get_percent();
+
+	return chg_perc > 2 && chg_perc < 95;
+}
+
+/**
+ * Return if VBUS is sagging too low
+ */
+int board_is_vbus_too_low(int port, enum chg_ramp_vbus_state ramp_state)
+{
+	return charger_get_vbus_voltage(port) < BD9995X_BC12_MIN_VOLTAGE;
+}
+
+static void enable_input_devices(void)
+{
+	/* We need to turn on tablet mode for motion sense */
+	board_set_tablet_mode();
+
+	/* Then, we disable peripherals only when the lid reaches 360 position.
+	 * (It's probably already disabled by motion_sense_task.)
+	 * We deliberately do not enable peripherals when the lid is leaving
+	 * 360 position. Instead, we let motion_sense_task enable it once it
+	 * reaches laptop zone (180 or less).
+	 */
+	if (tablet_get_mode())
+		lid_angle_peripheral_enable(0);
+}
+
+/* Enable or disable input devices, based on chipset state and tablet mode */
+#ifndef TEST_BUILD
+void lid_angle_peripheral_enable(int enable)
+{
+	/* If the lid is in 360 position, ignore the lid angle,
+	 * which might be faulty. Disable keyboard.
+	 */
+	if (tablet_get_mode() || chipset_in_state(CHIPSET_STATE_ANY_OFF))
+		enable = 0;
+	keyboard_scan_enable(enable, KB_SCAN_DISABLE_LID_ANGLE);
+}
+#endif
+
+/* Called on AP S5 -> S3 transition */
+static void board_chipset_startup(void)
+{
+	/* Enable USB-A port. */
+	gpio_set_level(GPIO_USB1_ENABLE, 1);
+
+	/* Enable Trackpad */
+	gpio_set_level(GPIO_EN_P3300_TRACKPAD_ODL, 0);
+
+	hook_call_deferred(&enable_input_devices_data, 0);
+}
+DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup, HOOK_PRIO_DEFAULT);
+
+/* Called on AP S3 -> S5 transition */
+static void board_chipset_shutdown(void)
+{
+	/* Disable USB-A port. */
+	gpio_set_level(GPIO_USB1_ENABLE, 0);
+
+	/* Disable Trackpad */
+	gpio_set_level(GPIO_EN_P3300_TRACKPAD_ODL, 1);
+
+	hook_call_deferred(&enable_input_devices_data, 0);
+	/* FIXME(dhendrix): Drive USB_PD_RST_ODL low to prevent
+	 * leakage? (see comment in schematic)
+	 */
+}
+DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown, HOOK_PRIO_DEFAULT);
+
+/* FIXME(dhendrix): Add CHIPSET_RESUME and CHIPSET_SUSPEND
+ * hooks to enable/disable sensors?
+ */
+/*
+ * MCHP: Next two routines not present in firmware-reef-9042.B
+ */
+/* Called on AP S3 -> S0 transition */
+static void board_chipset_resume(void)
+{
+	gpio_set_level(GPIO_ENABLE_BACKLIGHT, 1);
+}
+DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
+
+/* Called on AP S0 -> S3 transition */
+static void board_chipset_suspend(void)
+{
+	gpio_set_level(GPIO_ENABLE_BACKLIGHT, 0);
+}
+DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT);
+
+/*
+ * FIXME(dhendrix): Weak symbol hack until we can get a better solution for
+ * both Amenia and Reef.
+ */
+void chipset_do_shutdown(void)
+{
+	/* Disable PMIC */
+	gpio_set_level(GPIO_PMIC_EN, 0);
+
+	/*Disable 3.3V rail */
+	gpio_set_level(GPIO_EN_PP3300, 0);
+	while (gpio_get_level(GPIO_PP3300_PG))
+		;
+
+	/*Disable 5V rail */
+	gpio_set_level(GPIO_EN_PP5000, 0);
+	while (gpio_get_level(GPIO_PP5000_PG))
+		;
+}
+
+void board_hibernate_late(void)
+{
+	int i;
+	const uint32_t hibernate_pins[][2] = {
+		/* Turn off LEDs in hibernate */
+		{GPIO_BAT_LED_BLUE, GPIO_INPUT | GPIO_PULL_UP},
+		{GPIO_BAT_LED_AMBER, GPIO_INPUT | GPIO_PULL_UP},
+		{GPIO_LID_OPEN, GPIO_INT_RISING | GPIO_PULL_DOWN},
+
+		/*
+		 * BD99956 handles charge input automatically. We'll disable
+		 * charge output in hibernate. Charger will assert ACOK_OD
+		 * when VBUS or VCC are plugged in.
+		 */
+		{GPIO_USB_C0_5V_EN,       GPIO_INPUT  | GPIO_PULL_DOWN},
+		{GPIO_USB_C1_5V_EN,       GPIO_INPUT  | GPIO_PULL_DOWN},
+	};
+
+	/* 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, 0x7F, GPIO_INPUT | GPIO_PULL_UP);
+	gpio_set_flags_by_mask(0x0, 0xE0, GPIO_INPUT | GPIO_PULL_UP);
+	/* KBD_KSO2 needs to have a pull-down enabled instead of pull-up */
+	gpio_set_flags_by_mask(0x1, 0x80, GPIO_INPUT | GPIO_PULL_DOWN);
+}
+
+/* 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)}
+};
+
+const matrix_3x3_t mag_standard_ref = {
+	{ FLOAT_TO_FP(-1), 0, 0},
+	{ 0,  FLOAT_TO_FP(1), 0},
+	{ 0, 0, FLOAT_TO_FP(-1)}
+};
+
+/* sensor private data */
+static struct kionix_accel_data g_kx022_data;
+static struct bmi160_drv_data_t g_bmi160_data;
+static struct bmp280_drv_data_t bmp280_drv_data;
+/* MCHP: struct not present in firmware-reef-9042.B */
+static struct opt3001_drv_data_t g_opt3001_data = {
+	.scale = 1,
+	.uscale = 0,
+	.offset = 0,
+};
+
+/* MCHP: differences in structure initializatio from
+ * firmware-reef-9042.B
+ */
+/* FIXME(dhendrix): Copied from Amenia, probably need to tweak for Reef */
+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_LID_ACCEL,
+	 .addr = KX022_ADDR1,
+	 .rot_standard_ref = NULL, /* Identity matrix. */
+	 .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,
+		},
+		 /* Sensor on for lid 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_GYRO,
+	 .addr = BMI160_ADDR0,
+	 .rot_standard_ref = &base_standard_ref,
+	 .default_range = 2,  /* g, enough for laptop. */
+	 .min_frequency = BMI160_ACCEL_MIN_FREQ,
+	 .max_frequency = BMI160_ACCEL_MAX_FREQ,
+	 .config = {
+		 /* EC use accel for angle detection */
+		 [SENSOR_CONFIG_EC_S0] = {
+			.odr = 10000 | ROUND_UP_FLAG,
+			.ec_rate = 100 * MSEC,
+		 },
+		 /* Sensor on for lid angle detection */
+		 [SENSOR_CONFIG_EC_S3] = {
+			.odr = 10000 | ROUND_UP_FLAG,
+			.ec_rate = 100 * MSEC,
+		 },
+	 },
+	},
+
+	[BASE_GYRO] = {
+	 .name = "Base Gyro",
+	 .active_mask = SENSOR_ACTIVE_S0,
+	 .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_GYRO,
+	 .addr = BMI160_ADDR0,
+	 .default_range = 1000, /* dps */
+	 .rot_standard_ref = &base_standard_ref,
+	 .min_frequency = BMI160_GYRO_MIN_FREQ,
+	 .max_frequency = BMI160_GYRO_MAX_FREQ,
+	},
+	[BASE_MAG] = {
+	 .name = "Base Mag",
+	 .active_mask = SENSOR_ACTIVE_S0,
+	 .chip = MOTIONSENSE_CHIP_BMI160,
+	 .type = MOTIONSENSE_TYPE_MAG,
+	 .location = MOTIONSENSE_LOC_BASE,
+	 .drv = &bmi160_drv,
+	 .mutex = &g_base_mutex,
+	 .drv_data = &g_bmi160_data,
+	 .port = I2C_PORT_GYRO,
+	 .addr = BMI160_ADDR0,
+	 .default_range = 1 << 11, /* 16LSB / uT, fixed */
+	 .rot_standard_ref = &mag_standard_ref,
+	 .min_frequency = BMM150_MAG_MIN_FREQ,
+	 .max_frequency = BMM150_MAG_MAX_FREQ(SPECIAL),
+	},
+	[BASE_BARO] = {
+	 .name = "Base Baro",
+	 .active_mask = SENSOR_ACTIVE_S0,
+	 .chip = MOTIONSENSE_CHIP_BMP280,
+	 .type = MOTIONSENSE_TYPE_BARO,
+	 .location = MOTIONSENSE_LOC_BASE,
+	 .drv = &bmp280_drv,
+	 .drv_data = &bmp280_drv_data,
+	 .port = I2C_PORT_BARO,
+	 .addr = BMP280_I2C_ADDRESS1,
+	 .default_range = 1 << 18, /*  1bit = 4 Pa, 16bit ~= 2600 hPa */
+	 .min_frequency = BMP280_BARO_MIN_FREQ,
+	 .max_frequency = BMP280_BARO_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,
+	 .addr = OPT3001_I2C_ADDR1,
+	 .rot_standard_ref = NULL,
+	 .default_range = 0x10000, /* scale = 1; uscale = 0 */
+	 .min_frequency = OPT3001_LIGHT_MIN_FREQ,
+	 .max_frequency = OPT3001_LIGHT_MAX_FREQ,
+	 .config = {
+		[SENSOR_CONFIG_EC_S0] = {
+			.odr = 1000,
+		},
+	 },
+	},
+};
+const unsigned int motion_sensor_count = ARRAY_SIZE(motion_sensors);
+
+/*
+ * MCHP: difference from firmware-reef-9042.B
+ * New code doesn't have TASK_ALS
+ */
+/* 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);
+
+void board_hibernate(void)
+{
+	/*
+	 * To support hibernate called from console commands, ectool commands
+	 * and key sequence, shutdown the AP before hibernating.
+	 */
+	chipset_do_shutdown();
+
+	/* Added delay to allow AP to settle down */
+	msleep(100);
+
+	/* Enable both the VBUS & VCC ports before entering PG3 */
+	bd9995x_select_input_port(BD9995X_CHARGE_PORT_BOTH, 1);
+
+	/* Turn BGATE OFF for saving the power */
+	bd9995x_set_power_save_mode(BD9995X_PWR_SAVE_MAX);
+}
+
+struct {
+	enum reef_board_version version;
+	int thresh_mv;
+} const reef_board_versions[] = {
+	/* Vin = 3.3V, R1 = 46.4K, R2 values listed below */
+	{ BOARD_VERSION_1, 328 * 1.03 },  /* 5.11 Kohm */
+	{ BOARD_VERSION_2, 670 * 1.03 },  /* 11.8 Kohm */
+	{ BOARD_VERSION_3, 1012 * 1.03 }, /* 20.5 Kohm */
+	{ BOARD_VERSION_4, 1357 * 1.03 }, /* 32.4 Kohm */
+	{ BOARD_VERSION_5, 1690 * 1.03 }, /* 48.7 Kohm */
+	{ BOARD_VERSION_6, 2020 * 1.03 }, /* 73.2 Kohm */
+	{ BOARD_VERSION_7, 2352 * 1.03 }, /* 115 Kohm */
+	{ BOARD_VERSION_8, 2802 * 1.03 }, /* 261 Kohm */
+};
+BUILD_ASSERT(ARRAY_SIZE(reef_board_versions) == BOARD_VERSION_COUNT);
+
+/*
+ * Checkpatch claims msleep(n) for n < 20 can sleep up to 20 ms.
+ * Loop up to 10 times sampling every 100 us. If 5 or more consecutive
+ * samples are the same exit sample loop.
+ */
+int board_get_version(void)
+{
+	static int version = BOARD_VERSION_UNKNOWN;
+	int mv, i, prev, cnt;
+
+	if (version != BOARD_VERSION_UNKNOWN)
+		return version;
+
+	/* FIXME(dhendrix): enable ADC */
+	gpio_set_flags(GPIO_EC_BRD_ID_EN_ODL, GPIO_ODR_HIGH);
+	gpio_set_level(GPIO_EC_BRD_ID_EN_ODL, 0);
+	/* Wait to allow cap charge */
+	prev = 0;
+	cnt = 0;
+	for (i = 0; i < 10; i++) {
+		udelay(100);
+		mv = adc_read_channel(ADC_BOARD_ID);
+		if (mv != prev) {
+			prev = mv;
+			cnt = 0;
+		} else {
+			cnt++;
+		}
+		if (cnt >= 5)
+			break;
+	}
+	/* FIXME(dhendrix): disable ADC */
+	gpio_set_level(GPIO_EC_BRD_ID_EN_ODL, 1);
+	gpio_set_flags(GPIO_EC_BRD_ID_EN_ODL, GPIO_INPUT);
+
+	if (mv == ADC_READ_ERROR) {
+		version = BOARD_VERSION_UNKNOWN;
+		return version;
+	}
+
+	for (i = 0; i < BOARD_VERSION_COUNT; i++) {
+		if (mv < reef_board_versions[i].thresh_mv) {
+			version = reef_board_versions[i].version;
+			break;
+		}
+	}
+
+	CPRINTS("Board version: %d", version);
+	return version;
+}
+
+/* Keyboard scan setting */
+struct keyboard_scan_config keyscan_config = {
+	/*
+	 * F3 key scan cycle completed but scan input is not
+	 * charging to logic high when EC start scan next
+	 * column for "T" key, so we set .output_settle_us
+	 * to 80us from 50us.
+	 */
+	.output_settle_us = 80,
+	.debounce_down_us = 9 * MSEC,
+	.debounce_up_us = 30 * MSEC,
+	.scan_period_us = 3 * MSEC,
+	.min_post_scan_delay_us = 1000,
+	.poll_timeout_us = 100 * MSEC,
+	.actual_key_mask = {
+		0x14, 0xff, 0xff, 0xff, 0xff, 0xf5, 0xff,
+		0xa4, 0xff, 0xfe, 0x55, 0xfa, 0xca  /* full set */
+	},
+};