Re: [alsa-devel] [PATCH 3/4] snd: add support for displayport multi-stream to hda codec.

David Weinehall
2015-06-25T12:53:26Z

On Thu, Jun 25, 2015 at 04:22:38PM +0800, Raymond Yau wrote:
> > >
> > > Shall we move or cc this discussion on audio driver side to ALSA ML?
> >
> > Oops I thought I had cc'ed these patches to alsa-devel as well when I
> sent them.
> >
> > > I think we also need to decide how to manage PCM devices for DP MST.
> > > Now the HD-A driver create a PCM device for each pin, and the substream
> > > number is 1 for each PCM. Now with DP MST enabled, each pin can support
> > > multiple streams (e.g. 3 on Intel HSW/BDW/SKL).
>
> What hardware feature are available ?
>
> Only three monitors playing different audio streams or
>
> With 1x3 video wall , can the center monitor playback stereo while the left
> monitor play left channel and right monitor play right channel ?

Ohhh, clever idea :) If it isn't support already it'd make an awesome
feature at least.

Kind regards, David