src/mainboard/google/veyron_rialto/chromeos.c

/* SPDX-License-Identifier: GPL-2.0-only */

#include <boot/coreboot_tables.h>
#include <gpio.h>
#include <vendorcode/google/chromeos/chromeos.h>

#include "board.h"

#define GPIO_WP		GPIO(7, A, 6)
#define GPIO_POWER	GPIO(0, A, 5)
#define GPIO_RECOVERY_SERVO	GPIO(0, B, 1)
#define GPIO_RECOVERY_PUSHKEY	GPIO(7, B, 1)

void setup_chromeos_gpios(void)
{
	gpio_input(GPIO_WP);
	gpio_input(GPIO_POWER);
	gpio_input_pullup(GPIO_RECOVERY_SERVO);
	gpio_input_pullup(GPIO_RECOVERY_PUSHKEY);
}

void fill_lb_gpios(struct lb_gpios *gpios)
{
	struct lb_gpio chromeos_gpios[] = {
		/* Note for early development, we want to support both servo
		 * and pushkey recovery buttons in firmware boot stages. */
		{GPIO_RECOVERY_PUSHKEY.raw, ACTIVE_LOW,
			!get_recovery_mode_switch(), "presence"},
		{GPIO_POWER.raw, ACTIVE_LOW, -1, "power"},
		{GPIO_RESET.raw, ACTIVE_HIGH, -1, "reset"},
	};
	lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
}

int get_recovery_mode_switch(void)
{
	// Both RECOVERY_SERVO and RECOVERY_PUSHKEY are low active.
	return !(gpio_get(GPIO_RECOVERY_SERVO) &&
		 gpio_get(GPIO_RECOVERY_PUSHKEY));
}

int get_write_protect_state(void)
{
	return !gpio_get(GPIO_WP);
}