diff options
Diffstat (limited to 'zephyr/program/brya/kblight_hooks.c')
-rw-r--r-- | zephyr/program/brya/kblight_hooks.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/zephyr/program/brya/kblight_hooks.c b/zephyr/program/brya/kblight_hooks.c new file mode 100644 index 0000000000..8716537f5d --- /dev/null +++ b/zephyr/program/brya/kblight_hooks.c @@ -0,0 +1,69 @@ +/* Copyright 2022 The ChromiumOS Authors + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "cbi.h" +#include "hooks.h" + +#include <stdbool.h> + +#include <zephyr/drivers/gpio.h> + +#include <ap_power/ap_power.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); |