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/* Copyright 2022 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.
*/
#include <stdbool.h>
#include "cbi.h"
#include "gpio.h"
#include "hooks.h"
/* Enable/Disable keyboard backlight gpio */
static inline void kbd_backlight_enable(bool enable)
{
if (get_board_id() == 1)
gpio_set_level(GPIO_ID_1_EC_KB_BL_EN, enable);
else
gpio_set_level(GPIO_EC_KB_BL_EN_L, !enable);
}
/* Called on AP S3 -> S0 transition */
static void board_chipset_resume(void)
{
/* Allow keyboard backlight to be enabled */
kbd_backlight_enable(true);
}
DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
/* Called on AP S0 -> S3 transition */
static void board_chipset_suspend(void)
{
/* Turn off the keyboard backlight if it's on. */
kbd_backlight_enable(false);
}
DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT);
/*
* Explicitly apply the board ID 1 *gpio.inc settings to pins that
* were reassigned on current boards.
*/
static void set_board_id_1_gpios(void)
{
if (get_board_id() != 1)
return;
gpio_set_flags(GPIO_ID_1_EC_KB_BL_EN, GPIO_OUT_LOW);
}
DECLARE_HOOK(HOOK_INIT, set_board_id_1_gpios, HOOK_PRIO_FIRST);
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