68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// Audio Mute LED trigger
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//
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#include <linux/kernel.h>
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#include <linux/leds.h>
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#include <linux/module.h>
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#include "../leds.h"
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static enum led_brightness audio_state[NUM_AUDIO_LEDS];
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static int ledtrig_audio_mute_activate(struct led_classdev *led_cdev)
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{
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led_set_brightness_nosleep(led_cdev, audio_state[LED_AUDIO_MUTE]);
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return 0;
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}
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static int ledtrig_audio_micmute_activate(struct led_classdev *led_cdev)
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{
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led_set_brightness_nosleep(led_cdev, audio_state[LED_AUDIO_MICMUTE]);
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return 0;
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}
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static struct led_trigger ledtrig_audio[NUM_AUDIO_LEDS] = {
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[LED_AUDIO_MUTE] = {
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.name = "audio-mute",
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.activate = ledtrig_audio_mute_activate,
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},
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[LED_AUDIO_MICMUTE] = {
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.name = "audio-micmute",
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.activate = ledtrig_audio_micmute_activate,
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},
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};
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enum led_brightness ledtrig_audio_get(enum led_audio type)
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{
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return audio_state[type];
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}
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EXPORT_SYMBOL_GPL(ledtrig_audio_get);
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void ledtrig_audio_set(enum led_audio type, enum led_brightness state)
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{
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audio_state[type] = state;
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led_trigger_event(&ledtrig_audio[type], state);
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}
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EXPORT_SYMBOL_GPL(ledtrig_audio_set);
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static int __init ledtrig_audio_init(void)
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{
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led_trigger_register(&ledtrig_audio[LED_AUDIO_MUTE]);
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led_trigger_register(&ledtrig_audio[LED_AUDIO_MICMUTE]);
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return 0;
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}
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module_init(ledtrig_audio_init);
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static void __exit ledtrig_audio_exit(void)
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{
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led_trigger_unregister(&ledtrig_audio[LED_AUDIO_MUTE]);
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led_trigger_unregister(&ledtrig_audio[LED_AUDIO_MICMUTE]);
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}
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module_exit(ledtrig_audio_exit);
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MODULE_DESCRIPTION("LED trigger for audio mute control");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("ledtrig:audio-mute");
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MODULE_ALIAS("ledtrig:audio-micmute");
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