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path: root/board/halvor/board.c
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/* 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.
 */

/* Volteer board-specific configuration */

#include "button.h"
#include "common.h"
#include "accelgyro.h"
#include "driver/accel_bma2x2.h"
#include "driver/als_tcs3400.h"
#include "driver/sync.h"
#include "extpower.h"
#include "gpio.h"
#include "hooks.h"
#include "lid_switch.h"
#include "power.h"
#include "power_button.h"
#include "pwm.h"
#include "pwm_chip.h"
#include "switch.h"
#include "system.h"
#include "task.h"
#include "tablet_mode.h"
#include "uart.h"
#include "usb_pd_tbt.h"
#include "util.h"

#include "gpio_list.h" /* Must come after other header files. */

static void board_init(void)
{
	/* Illuminate motherboard and daughter board LEDs equally to start. */
	pwm_enable(PWM_CH_LED4_SIDESEL, 1);
	pwm_set_duty(PWM_CH_LED4_SIDESEL, 50);
}
DECLARE_HOOK(HOOK_INIT, board_init, HOOK_PRIO_DEFAULT);

__override enum tbt_compat_cable_speed board_get_max_tbt_speed(int port)
{
	/* Routing length exceeds 205mm prior to connection to re-timer */
	if (port == USBC_PORT_C1)
		return TBT_SS_U32_GEN1_GEN2;

	/*
	 * Thunderbolt-compatible mode not supported
	 *
	 * TODO (b/153995632): All the USB-C ports need to support same speed.
	 * Need to fix once USB-C feature set is known for Halvor.
	 */
	return TBT_SS_RES_0;
}

__override bool board_is_tbt_usb4_port(int port)
{
	/*
	 * On the volteer reference board 1 only port 1 supports TBT & USB4
	 *
	 * TODO (b/153995632): All the USB-C ports need to support same
	 * features. Need to fix once USB-C feature set is known for Halvor.
	 */
	return port == USBC_PORT_C1;
}

/******************************************************************************/
/* I2C port map configuration */
const struct i2c_port_t i2c_ports[] = {
	{
		.name = "sensor",
		.port = I2C_PORT_SENSOR,
		.kbps = 400,
		.scl = GPIO_EC_I2C_0_SCL,
		.sda = GPIO_EC_I2C_0_SDA,
	},
	{
		.name = "usb_c0",
		.port = I2C_PORT_USB_C0,
		.kbps = 1000,
		.scl = GPIO_EC_I2C_1_SCL,
		.sda = GPIO_EC_I2C_1_SDA,
	},
	{
		.name = "usb_c1",
		.port = I2C_PORT_USB_C1,
		.kbps = 1000,
		.scl = GPIO_EC_I2C_2_SCL,
		.sda = GPIO_EC_I2C_2_SDA,
	},
	{
		.name = "usb_bb_retimer",
		.port = I2C_PORT_USB_BB_RETIMER,
		.kbps = 100,
		.scl = GPIO_EC_I2C_3_SCL,
		.sda = GPIO_EC_I2C_3_SDA,
	},
	{
		.name = "usb_c2",
		.port = I2C_PORT_USB_C2,
		.kbps = 1000,
		.scl = GPIO_EC_I2C_4_SCL,
		.sda = GPIO_EC_I2C_4_SDA,
	},
	{
		.name = "power",
		.port = I2C_PORT_POWER,
		.kbps = 100,
		.scl = GPIO_EC_I2C_5_SCL,
		.sda = GPIO_EC_I2C_5_SDA,
	},
	{
		.name = "eeprom",
		.port = I2C_PORT_EEPROM,
		.kbps = 400,
		.scl = GPIO_EC_I2C_7_SCL,
		.sda = GPIO_EC_I2C_7_SDA,
	},
};
const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);

/* PWM configuration */
const struct pwm_t pwm_channels[] = {
	[PWM_CH_LED1_BLUE] = {
		.channel = 2,
		.flags = PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
		.freq = 2400,
	},
	[PWM_CH_LED2_GREEN] = {
		.channel = 0,
		.flags = PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
		.freq = 2400,
	},
	[PWM_CH_LED3_RED] = {
		.channel = 1,
		.flags = PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
		.freq = 2400,
	},
	[PWM_CH_LED4_SIDESEL] = {
		.channel = 7,
		.flags = PWM_CONFIG_ACTIVE_LOW | PWM_CONFIG_DSLEEP,
		/* Run at a higher frequency than the color PWM signals to avoid
		 * timing-based color shifts.
		 */
		.freq = 4800,
	},
	[PWM_CH_FAN] = {
		.channel = 5,
		.flags = PWM_CONFIG_OPEN_DRAIN,
		.freq = 25000
	},
	[PWM_CH_KBLIGHT] = {
		.channel = 3,
		.flags = 0,
		/*
		 * Set PWM frequency to multiple of 50 Hz and 60 Hz to prevent
		 * flicker. Higher frequencies consume similar average power to
		 * lower PWM frequencies, but higher frequencies record a much
		 * lower maximum power.
		 */
		.freq = 2400,
	},
};
BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);

/******************************************************************************/
void halvor_tcpc_alert_event(enum gpio_signal signal)
{
	/* TODO (b/153705222): Need tp implement three USB-C function */
}

void halvor_ppc_interrupt(enum gpio_signal signal)
{
	/* TODO (b/153705222): Need tp implement three USB-C function */
}

void halvor_bc12_interrupt(enum gpio_signal signal)
{
	/* TODO (b/153705222): Need tp implement three USB-C function */
}