On Fri, 19 Jun 2009, Takashi Iwai wrote:
Hi,
yet another thing I've worked recently on is a bit more generalized framework for jack-sense reporting for HD-audio. This supersedes the existing jack-sense reporting via the input layer. In addition, it gives the corresponding control elements.
For example, you'll have "Jack HP-Out" (or a bit more verbose like "Jack HP-Out at Ext Rear") control via control API as well as other mixer controls. This can notify when a jack is plugged/unplugged. But, another big win is that you can read the current pin sense just by reading this element.
Before definining such extension, I would really see to define standard control names in Documentation/ControlNames.txt file. It seems to me that most new drivers does not follow suggested naming. The document should be reviewed, of course.
Jaroslav
----- Jaroslav Kysela perex@perex.cz Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc.