[alsa-devel] DP1.2 MST audio support discussion

[Yang, Libin]

> -----Original Message-----
> From: David Henningsson [mailto:david.henningsson at canonical.com]
> Sent: Thursday, October 22, 2015 2:52 PM
> To: Yang, Libin; Raymond Yau; Takashi Iwai
> Cc: airlied at linux.ie; tanuk at iki.fi; Lin, Mengdong; Girdwood, Liam R;
> ALSA Development Mailing List
> Subject: Re: [alsa-devel] DP1.2 MST audio support discussion
> 
> 
> 
> On 2015-10-22 03:31, Yang, Libin wrote:
> > Hi Raymond,
> >
> >>
> >> From: Raymond Yau [mailto:superquad.vortex2 at gmail.com]
> >> Sent: Friday, October 16, 2015 8:33 AM
> >> To: Takashi Iwai
> >> Cc: airlied at linux.ie; tanuk at iki.fi; David Henningsson; Yang, Libin;
> Lin,
> >> Mengdong; Girdwood, Liam R; ALSA Development Mailing List
> >> Subject: Re: [alsa-devel] DP1.2 MST audio support discussion
> >>
> >>
> >>>>
> >>>> Do it mean that only one DP MST port and no HDMI port on the
> >> same graphic
> >>>> card ?
> >>>
> >>> No.
> >> If there is only one HDMI and one Display Port, this mean that there
> >> are two pin complexes
> >> How about the name of jack detection kctl of three Display Port
> >> monitors  which are created on the same pin complex but different
> >> dev_index ?
> >
> > For the jack name, what do you think if we change to
> > "HDMI/DP, pin=n, dev=m" format? Will it impact on pulseaudio?
> 
> Yes, it will impact PulseAudio. It will require changes to files in
> 
> http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/
> alsa/mixer/paths

So does this mean we should not change the name "HDMI/DP,pcm=3 Jack"
to "HDMI/DP,pin=n, dev=m Jack", otherwise the old PA will not work with
the new driver?

Regards,
Libin

> 
> --
> David Henningsson, Canonical Ltd.
> https://launchpad.net/~diwic