[alsa-devel] [0/2] Jack reporting

Mark Brown broonie at opensource.wolfsonmicro.com
Thu Jul 17 12:31:12 CEST 2008

On Wed, Jul 16, 2008 at 12:36:06PM -0400, Dmitry Torokhov wrote:
> On Wed, Jul 16, 2008 at 01:50:53PM +0100, Mark Brown wrote:

> > As well as detecting the presence of a connected device typical jack
> > detection implementations also support the implementation of at least
> > one button which would require an input device for at least some jacks

> It really depends on what you can do with this button. If it is just a
> simple circuit breaker then it is not really an input device. However
> is you can remap it for different purposes or map a regular key on a
> keybaord to perform this function then I will agree with you. For example

As far as the hardware is concerned it's just a button - if it's visible
to software then there's no fixed function for it and any action taken
will be application/system specific.  There will normally be a side
effect in hardware muting the microphone but that's not intended to be
the main effect.

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