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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 <zephyr/drivers/gpio.h>
#include <stdbool.h>
#include <ap_power/ap_power.h>
#include "cbi.h"
#include "hooks.h"
/* Enable/Disable keyboard backlight gpio */
static inline void kbd_backlight_enable(bool enable)
{
if (get_board_id() == 1)
gpio_pin_set_dt(GPIO_DT_FROM_NODELABEL(gpio_id_1_ec_kb_bl_en),
enable);
else
gpio_pin_set_dt(GPIO_DT_FROM_NODELABEL(gpio_ec_kb_bl_en_l),
!enable);
}
static void board_backlight_handler(struct ap_power_ev_callback *cb,
struct ap_power_ev_data data)
{
bool enable;
switch (data.event) {
default:
return;
case AP_POWER_RESUME:
/* Called on AP S3 -> S0 transition */
enable = true;
break;
case AP_POWER_SUSPEND:
/* Called on AP S0 -> S3 transition */
enable = false;
break;
}
kbd_backlight_enable(enable);
}
/*
* 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)
{
static struct ap_power_ev_callback cb;
/*
* Add a callback for suspend/resume to
* control the keyboard backlight.
*/
ap_power_ev_init_callback(&cb, board_backlight_handler,
AP_POWER_RESUME | AP_POWER_SUSPEND);
ap_power_ev_add_callback(&cb);
if (get_board_id() != 1)
return;
gpio_pin_configure_dt(GPIO_DT_FROM_NODELABEL(gpio_id_1_ec_kb_bl_en),
GPIO_OUTPUT_LOW);
}
DECLARE_HOOK(HOOK_INIT, set_board_id_1_gpios, HOOK_PRIO_FIRST);
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