[alsa-devel] Automatic mic-selection on Realtek and IDT/STAC codecs

Hi,

recently I added the code for HD-audio Realtek and IDT/Sigmatel codecs to support the automatic capture-source selection via mic jack plugging. This feature is enabled for machines with one external and one internal mic, and only for auto-BIOS parser mode in the case of Realtek codecs.

So, don't be surprised if you see neither "Capture Source" nor "Input Source" mixer elements after updates. Just plugging the mic jack will switch the input source from the internal to the external mic.

If you encounter any problems regarding this change, please let me know.

thanks,

Takashi