Audio Mute LED Trigger

modulename: ledtrig-audio.ko

configname: CONFIG_LEDS_TRIGGER_AUDIO

Linux Kernel Configuration
└─>Device Drivers
└─>LED Support
└─>LED Trigger support
└─>Audio Mute LED Trigger
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
This allows LEDs to be controlled by audio drivers for following
the audio mute and mic-mute changes.
If unsure, say N

source code: