[alsa-devel] [PATCH] add the nvidia HDMI codec driver for MCP77/79

Takashi Iwai tiwai at suse.de
Thu Sep 4 09:04:13 CEST 2008

At Wed, 03 Sep 2008 14:11:16 +0200,
Pavel Hofman wrote:
> >> ......
> >> According to these codes, It only can get the realtek codec and can not
> >> get hdmi codec, if just change azx_max_codecs[AZX_DRIVER_NVIDIA] to 4
> >> I think if remove "if (!audio_codecs)", it will be better, and I only
> >> need to chang azx_max_codecs[AZX_DRIVER_NVIDIA] to 4
> > 
> > Well, the check is there for a good reason.
> > 
> > There are many machines with broken BIOS reporting the 4th slot
> > available although it isn't actually.  It's a workaround to skip such
> > a bogus information.  So, it cannot be changed so easily.
> > 
> > We need to sort out this in a better way...  Oh well.
> Please, please, put the above information as a comment to the respective 
> place. These "hacks" should be commented :)

I changed that code yesterday with a little bit more comment.

Wei, Peer, could you regenerate the patch based on the latest sound
git tree?


or use the snapshot tarball from


This already contains the fix for the 4th slot probe on Nvidia



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