On Fri, Apr 25, 2008 at 02:32:42PM -0700, Tobin Davis wrote: > The snd_hda_intel driver does this internally to mute the speakers when > headphones are plugged in. Ditto for front mic. But you are right, we > need a standard way of tracking this. I am exploring the HAL interface > now to see what I can learn from it. And most sound chips have an The interface I'd previously proposed here was to provide an input device per-jack which would do this - hal should then be able to monitor the input device. As suggested in the original message in the thread providing sysfs information would probably be helpful for scripts. > insert detection mechanism. Usually they are wired to specific jacks, > but sometimes they just register a change in plug state, and read the > jack's impedance levels to know which jack is used. It is documented in > the Sigmatel/IDT, Realtek, and Analog Devices codec PRMs. Yes, that's how all the codecs I've looked at do this. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
