[alsa-devel] questions about asoc jack detection

Mark Brown broonie at opensource.wolfsonmicro.com
Wed Apr 20 16:53:58 CEST 2011

On Wed, Apr 20, 2011 at 10:06:15PM +0800, Lu Guanqun wrote:

> Yes, it's related to policy. But I see some inconsistencies in handling
> this stuff. In this above example, you suggest we should play out of
> both outputs. However in HDA code, the common way when headphone is
> inserted is to mute the speaker and enable the headphone. Is there some
> differences between the HDA code and the ASoC code? Or this is just due
> to legacy code?

HDA code does this differently.  I'd argue that they've taken the wrong
implementation decision and that this should be a userspace issue but
the use cases for PCs are a bit more basic.

More information about the Alsa-devel mailing list