// SPDX-License-Identifier: GPL-2.0 // // Audio Mute LED trigger // #include <linux/kernel.h> #include <linux/leds.h> #include <linux/module.h> static struct led_trigger *ledtrig_audio[NUM_AUDIO_LEDS]; static enum led_brightness audio_state[NUM_AUDIO_LEDS]; enum led_brightness ledtrig_audio_get(enum led_audio type) { return audio_state[type]; } EXPORT_SYMBOL_GPL(ledtrig_audio_get); void ledtrig_audio_set(enum led_audio type, enum led_brightness state) { audio_state[type] = state; led_trigger_event(ledtrig_audio[type], state); } EXPORT_SYMBOL_GPL(ledtrig_audio_set); static int __init ledtrig_audio_init(void) { led_trigger_register_simple("audio-mute", &ledtrig_audio[LED_AUDIO_MUTE]); led_trigger_register_simple("audio-micmute", &ledtrig_audio[LED_AUDIO_MICMUTE]); return 0; } module_init(ledtrig_audio_init); static void __exit ledtrig_audio_exit(void) { led_trigger_unregister_simple(ledtrig_audio[LED_AUDIO_MUTE]); led_trigger_unregister_simple(ledtrig_audio[LED_AUDIO_MICMUTE]); } module_exit(ledtrig_audio_exit); MODULE_DESCRIPTION("LED trigger for audio mute control"); MODULE_LICENSE("GPL v2");