1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun //
3*4882a593Smuzhiyun // Audio Mute LED trigger
4*4882a593Smuzhiyun //
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <linux/kernel.h>
7*4882a593Smuzhiyun #include <linux/leds.h>
8*4882a593Smuzhiyun #include <linux/module.h>
9*4882a593Smuzhiyun #include "../leds.h"
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun static enum led_brightness audio_state[NUM_AUDIO_LEDS];
12*4882a593Smuzhiyun
ledtrig_audio_mute_activate(struct led_classdev * led_cdev)13*4882a593Smuzhiyun static int ledtrig_audio_mute_activate(struct led_classdev *led_cdev)
14*4882a593Smuzhiyun {
15*4882a593Smuzhiyun led_set_brightness_nosleep(led_cdev, audio_state[LED_AUDIO_MUTE]);
16*4882a593Smuzhiyun return 0;
17*4882a593Smuzhiyun }
18*4882a593Smuzhiyun
ledtrig_audio_micmute_activate(struct led_classdev * led_cdev)19*4882a593Smuzhiyun static int ledtrig_audio_micmute_activate(struct led_classdev *led_cdev)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun led_set_brightness_nosleep(led_cdev, audio_state[LED_AUDIO_MICMUTE]);
22*4882a593Smuzhiyun return 0;
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun static struct led_trigger ledtrig_audio[NUM_AUDIO_LEDS] = {
26*4882a593Smuzhiyun [LED_AUDIO_MUTE] = {
27*4882a593Smuzhiyun .name = "audio-mute",
28*4882a593Smuzhiyun .activate = ledtrig_audio_mute_activate,
29*4882a593Smuzhiyun },
30*4882a593Smuzhiyun [LED_AUDIO_MICMUTE] = {
31*4882a593Smuzhiyun .name = "audio-micmute",
32*4882a593Smuzhiyun .activate = ledtrig_audio_micmute_activate,
33*4882a593Smuzhiyun },
34*4882a593Smuzhiyun };
35*4882a593Smuzhiyun
ledtrig_audio_get(enum led_audio type)36*4882a593Smuzhiyun enum led_brightness ledtrig_audio_get(enum led_audio type)
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun return audio_state[type];
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(ledtrig_audio_get);
41*4882a593Smuzhiyun
ledtrig_audio_set(enum led_audio type,enum led_brightness state)42*4882a593Smuzhiyun void ledtrig_audio_set(enum led_audio type, enum led_brightness state)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun audio_state[type] = state;
45*4882a593Smuzhiyun led_trigger_event(&ledtrig_audio[type], state);
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(ledtrig_audio_set);
48*4882a593Smuzhiyun
ledtrig_audio_init(void)49*4882a593Smuzhiyun static int __init ledtrig_audio_init(void)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun led_trigger_register(&ledtrig_audio[LED_AUDIO_MUTE]);
52*4882a593Smuzhiyun led_trigger_register(&ledtrig_audio[LED_AUDIO_MICMUTE]);
53*4882a593Smuzhiyun return 0;
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun module_init(ledtrig_audio_init);
56*4882a593Smuzhiyun
ledtrig_audio_exit(void)57*4882a593Smuzhiyun static void __exit ledtrig_audio_exit(void)
58*4882a593Smuzhiyun {
59*4882a593Smuzhiyun led_trigger_unregister(&ledtrig_audio[LED_AUDIO_MUTE]);
60*4882a593Smuzhiyun led_trigger_unregister(&ledtrig_audio[LED_AUDIO_MICMUTE]);
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun module_exit(ledtrig_audio_exit);
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun MODULE_DESCRIPTION("LED trigger for audio mute control");
65*4882a593Smuzhiyun MODULE_LICENSE("GPL v2");
66