[alsa-devel] HD-Audio device unsuppored (Nvidia G2xx-series GPU implemented)

[Takashi Iwai]

At Wed, 16 Dec 2009 22:15:50 +0100,
Stefan Ringel wrote:
> 
> Am 14.12.2009 18:45, schrieb Takashi Iwai:
> > At Mon, 14 Dec 2009 12:52:40 +0100,
> > I wrote:
> >   
> >> > 
> >>     
> >>> > > 
> >>> > > one codec-id missed (0x10de000d) and codec-name is "G2xx HDMI".
> >>>       
> >> > 
> >> > OK, I'll update.
> >>     
> > Below is the updated patch.  This also replaces the PCI ID check using
> > the generic hd-audio class check.
> >
> >
> > Takashi
> >
> >   
> Hi Takashi,
> 
> I have a theory,
> 
> 4 codec with 2 channels bundling to one pcm device for 8 channels
> uncompressed lpcm audio and compressed audio over first codec.

Yeah, that's my guess, too.

> Actual configuration is 4 separate pcm device.

I'm not sure about this.  The other 8ch Nvidia codecs have also
separate audio widgets, namely, one master + 4 slave.
Of course, the new one has no master, so it might be really with
separated 2ch PCM streams instead of 8ch interleaved format.


Takashi