On 11.11.20 15:30, Limonciello, Mario wrote: Hi, > Pressing the mute key activates a time delayed circuit to physically cut > off the mute. The LED is in the same circuit, so it reflects the true > state of the HW mute. The reason for the EC "ack" is so that software > can first invoke a SW mute before the HW circuit is cut off. Without SW > cutting this off first does not affect the time delayed muting or status > of the LED but there is a possibility of a "popping" noise leading to a > poor user experience. how long is that timeout ? > Exposing as an LED device allows the codec drivers notification path to > EC ACK to work. Which driver exactly ? Who's gonna access this LED ? --mtx -- --- Hinweis: unverschlüsselte E-Mails können leicht abgehört und manipuliert werden ! Für eine vertrauliche Kommunikation senden Sie bitte ihren GPG/PGP-Schlüssel zu. --- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering info@xxxxxxxxx -- +49-151-27565287