1// SPDX-License-Identifier: GPL-2.0
 2//
 3// Audio Mute LED trigger
 4//
 5
 6#include <linux/kernel.h>
 7#include <linux/leds.h>
 8#include <linux/module.h>
 9
10static struct led_trigger *ledtrig_audio[NUM_AUDIO_LEDS];
11static enum led_brightness audio_state[NUM_AUDIO_LEDS];
12
13enum led_brightness ledtrig_audio_get(enum led_audio type)
14{
15	return audio_state[type];
16}
17EXPORT_SYMBOL_GPL(ledtrig_audio_get);
18
19void ledtrig_audio_set(enum led_audio type, enum led_brightness state)
20{
21	audio_state[type] = state;
22	led_trigger_event(ledtrig_audio[type], state);
23}
24EXPORT_SYMBOL_GPL(ledtrig_audio_set);
25
26static int __init ledtrig_audio_init(void)
27{
28	led_trigger_register_simple("audio-mute",
29				    &ledtrig_audio[LED_AUDIO_MUTE]);
30	led_trigger_register_simple("audio-micmute",
31				    &ledtrig_audio[LED_AUDIO_MICMUTE]);
32	return 0;
33}
34module_init(ledtrig_audio_init);
35
36static void __exit ledtrig_audio_exit(void)
37{
38	led_trigger_unregister_simple(ledtrig_audio[LED_AUDIO_MUTE]);
39	led_trigger_unregister_simple(ledtrig_audio[LED_AUDIO_MICMUTE]);
40}
41module_exit(ledtrig_audio_exit);
42
43MODULE_DESCRIPTION("LED trigger for audio mute control");
44MODULE_LICENSE("GPL v2");