[alsa-devel] [PATCH v4 0/5] ALSA: hda - hdmi support dynamic pcm assignment

[Yang, Libin]

Hi Takashi,

> -----Original Message-----
> From: Takashi Iwai [mailto:tiwai at suse.de]
> Sent: Wednesday, December 16, 2015 3:47 PM
> To: libin.yang at linux.intel.com
> Cc: alsa-devel at alsa-project.org; Lin, Mengdong; Yang, Libin
> Subject: Re: [alsa-devel] [PATCH v4 0/5] ALSA: hda - hdmi support
> dynamic pcm assignment
> 
> On Wed, 16 Dec 2015 06:42:40 +0100,
> libin.yang at linux.intel.com wrote:
> >
> > From: Libin Yang <libin.yang at linux.intel.com>
> >
> > The patches are trying to support dynamically binding PCM to pin
> > in HDMI/DP audio.
> >
> > The pin will not bind to any PCM if there is not monitor connected.
> > When there is a monitor connected to the port (pin), driver will
> > try to find a proper PCM to assign to the port and setup the pin
> > if necessary.
> >
> > Libin Yang (5):
> >   ALSA: hda - hdmi begin to support dynamic PCM assignment
> >   ALSA: hda - hdmi playback without monitor in dynamic pcm bind
> mode
> >   ALSA: hda - hdmi operate spdif based on pcm
> >   ALSA: hda - hdmi dynamically bind PCM to pin when monitor hotplug
> >   ALSA: hda - hdmi setup pin when monitor hotplug in pcm dynamic
> >     assignment mode
> 
> I updated topic/hda-mst branch with these patches.  But the patch 4
> needs more fixes, as suggested in another mail.
> 
> Overall, I'd like to know whether MST audio really works in the
> current state, or not.  Do you have *any* git branch where MST audio
> is supposed to work at all?

I have uploaded the patches to: https://github.com/libinyang/linux.git
Branch is mst_virtual_pin_github. 

There is still an issue when doing the mst audio playback:
The later converter selection for pin will overwrite the previous setting.
This is the driver bug, I'm debugging it. 

Regards,
Libin

> 
> 
> thanks,
> 
> Takashi