HDA pin sense and presence detect capability

[Arnaud Patard <apatard@mandriva.com>]

Hi,


On some laptops with HDA codecs, there are different nids for the
Headphones and for the built-in speakers. This results in having sound
on speakers and on headphones at the same time. imho, the expected
behaviour is to have sound only on headphones (without having to play
with the mixer).

This can be achieve with the presence detect capability (0x709,0xf09): When
plug/unplugging the headphones, one gets an unsollicited responsed and
the driver mute the channels.

Is there something to do that in the code or should I go and code it ?
Any opinion/comments about that ?


Regards,
Arnaud



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