[alsa-devel] ALSA patch Nvidia 8 channel hdmi audio

[Alan Alan]

Hello Takashi !

I tried to apply the patch that removes restrictions to 16bits 48khz format.
Well now we have the following:
16bit 48khz                                     works
32bit 48khz                                     works
32bit 44khz, 96khz, 192khz              don't work
24bit 44khz, 48khz, 96khz, 192khz   don't work
16bit 44khz, 96khz, 192khz              don't work

I only get
Sample format not available for playback:
Setting of hwparams failed:

I enclosed to pastebin my alsainfo script output.

http://pastebin.com/m77dcfb3f

Thanks for the help !

2009/6/3 Takashi Iwai <tiwai at suse.de>

> At Wed, 3 Jun 2009 11:34:00 +0200,
> Alan Alan wrote:
> >
> > Hello Takashi !
> >
> > What should this patch do ?
>
> The patch removes the restriction patch_nvhdmi.c sets.  Instead,
> the driver tries to detect the supported format, rate, etc from the
> codec widget information.
>
> > Is it a cure for the 96, 192khz or 24bit sample playback problem ?
>
> Possibly.
>
> > If so, will it resample or natievly pass the stream to the amplifier ?
>
> It just enables the native support, possibly.
>
> And, don't forget to give back the alsa-info.sh output (run with
> --no-upload option).
>
>
> Takashi
>
> >
> > Thank you
> >
> > Alan
> >
> > 2009/6/3 Takashi Iwai <tiwai at suse.de>
> >
> >     At Wed, 3 Jun 2009 10:00:24 +0200,
> >     Alan Alan wrote:
> >     >
> >     > Hello Wei !
> >     >
> >     > Thanks for replying.
> >     > I tested it with speaker-test and xbmc babylon. Both had problems
> with
> >     > channel mapping.
> >     > I used this command:
> >     >
> >     > speaker-test -Dhdmi -c6
> >     > or
> >     > speaker-test -Dhdmi -c8
> >     >
> >     > alternatively you could try
> >     >
> >     > speaker-test -Dhw:0,3 -c6
> >     >
> >     >
> >     > I had to rund Xorg first and have the command from an xterm,
> becasue
> >     from a
> >     > normal terminal it would not work.
> >     > I think that is normal as a limitation of hdmi.
> >     >
> >     > What about the support for 24bits 192khz sound ?
> >     >
> >     > speaker-test -Dhdmi -c6  -r192000 does not work.
> >
> >     How about the patch below?
> >
> >     Also, could you give alsa-info.sh output?
> >
> >     Takashi
> >
> >     ---
> >     diff --git a/sound/pci/hda/patch_nvhdmi.c
> b/sound/pci/hda/patch_nvhdmi.c
> >     index f5792e2..48443de 100644
> >     --- a/sound/pci/hda/patch_nvhdmi.c
> >     +++ b/sound/pci/hda/patch_nvhdmi.c
> >     @@ -258,9 +258,11 @@ static struct hda_pcm_stream
> >     nvhdmi_pcm_digital_playback_8ch = {
> >            .channels_min = 2,
> >            .channels_max = 8,
> >            .nid = Nv_Master_Convert_nid,
> >     +#if 0
> >            .rates = SNDRV_PCM_RATE_48000,
> >            .maxbps = 16,
> >            .formats = SNDRV_PCM_FMTBIT_S16_LE,
> >     +#endif
> >            .ops = {
> >                    .open = nvhdmi_dig_playback_pcm_open,
> >                    .close = nvhdmi_dig_playback_pcm_close_8ch,
> >     @@ -273,9 +275,11 @@ static struct hda_pcm_stream
> >     nvhdmi_pcm_digital_playback_2ch = {
> >            .channels_min = 2,
> >            .channels_max = 2,
> >            .nid = Nv_Master_Convert_nid,
> >     +#if 0
> >            .rates = SNDRV_PCM_RATE_48000,
> >            .maxbps = 16,
> >            .formats = SNDRV_PCM_FMTBIT_S16_LE,
> >     +#endif
> >            .ops = {
> >                    .open = nvhdmi_dig_playback_pcm_open,
> >                    .close = nvhdmi_dig_playback_pcm_close_2ch,
> >
> >
>