cdac0fd2b7
This a follow-up to 5edf7f11313d ("leds: trigger: Load trigger modules
on-demand if used as default trigger") and sets an alias for the audio
triggers.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/4663d2d8-660d-4af2-9f65-d95e95263923@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
//
|
|
// Audio Mute LED trigger
|
|
//
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/leds.h>
|
|
#include <linux/module.h>
|
|
#include "../leds.h"
|
|
|
|
static enum led_brightness audio_state[NUM_AUDIO_LEDS];
|
|
|
|
static int ledtrig_audio_mute_activate(struct led_classdev *led_cdev)
|
|
{
|
|
led_set_brightness_nosleep(led_cdev, audio_state[LED_AUDIO_MUTE]);
|
|
return 0;
|
|
}
|
|
|
|
static int ledtrig_audio_micmute_activate(struct led_classdev *led_cdev)
|
|
{
|
|
led_set_brightness_nosleep(led_cdev, audio_state[LED_AUDIO_MICMUTE]);
|
|
return 0;
|
|
}
|
|
|
|
static struct led_trigger ledtrig_audio[NUM_AUDIO_LEDS] = {
|
|
[LED_AUDIO_MUTE] = {
|
|
.name = "audio-mute",
|
|
.activate = ledtrig_audio_mute_activate,
|
|
},
|
|
[LED_AUDIO_MICMUTE] = {
|
|
.name = "audio-micmute",
|
|
.activate = ledtrig_audio_micmute_activate,
|
|
},
|
|
};
|
|
|
|
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(&ledtrig_audio[LED_AUDIO_MUTE]);
|
|
led_trigger_register(&ledtrig_audio[LED_AUDIO_MICMUTE]);
|
|
return 0;
|
|
}
|
|
module_init(ledtrig_audio_init);
|
|
|
|
static void __exit ledtrig_audio_exit(void)
|
|
{
|
|
led_trigger_unregister(&ledtrig_audio[LED_AUDIO_MUTE]);
|
|
led_trigger_unregister(&ledtrig_audio[LED_AUDIO_MICMUTE]);
|
|
}
|
|
module_exit(ledtrig_audio_exit);
|
|
|
|
MODULE_DESCRIPTION("LED trigger for audio mute control");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS("ledtrig:audio-mute");
|
|
MODULE_ALIAS("ledtrig:audio-micmute");
|