[alsa-devel] [PATCH]Support MCP89 and GT21x hdmi audio

Wei Ni wni at nvidia.com
Mon Mar 8 05:35:37 CET 2010

Because I don't have GT220 card on hand, I didn't test it yet.
So I didn't add this card to the patch file. I think you could add it after
you test it.

About the warning messages, I don't know why.
May be some others can answer.


-----Original Message-----
From: VDR User [mailto:user.vdr at gmail.com] 
Sent: Monday, March 08, 2010 3:22 AM
To: Wei Ni
Cc: Takashi Iwai; akpm; alsa-devel; Wu Fengguang; linux-kernel; Pavel Hofman
Subject: Re: [alsa-devel] [PATCH]Support MCP89 and GT21x hdmi audio

I think this may be relevant to this subject, if not then my apologies.

I've just installed a GT220 card and was able to get audio-over-hdmi
working by compiling the snapshot drivers from 20100307 which contain
Wei's new code.  I further had to patch the driver to recognize my
card with:

--- alsa-driver-orig/alsa-kernel/pci/hda/patch_nvhdmi.c 2010-03-06
18:00:12.000000000 -0800
+++ alsa-driver/alsa-kernel/pci/hda/patch_nvhdmi.c      2010-03-06
18:02:00.000000000 -0800
@@ -1335,6 +1335,8 @@ static struct hda_codec_preset snd_hda_p
          .patch = patch_nvhdmi_8ch_89 },
        { .id = 0x10de000b, .name = "GT21x HDMI",
          .patch = patch_nvhdmi_8ch_89 },
+       { .id = 0x10de000a, .name = "GT220 HDMI",
+         .patch = patch_nvhdmi_8ch_89 },
        { .id = 0x10de000d, .name = "GT240 HDMI",
          .patch = patch_nvhdmi_8ch_89 },
        {} /* terminator */
@@ -1347,6 +1349,7 @@ MODULE_ALIAS("snd-hda-codec-id:10de0006"

This seems to work fine when running VDR but if I do anything else
like upgrade packages, compile something, or maybe create a bz2, then
I start to see _a lot_ of the following in my xine log:

pcm_hw.c: snd_pcm_hw_delay() SNDRV_PCM_IOCTL_DELAY failed.

With the old code this didn't happen.  However, my setup was an 8400gs
using SPDIF OUT from my mainboard to SPDIF IN on the card.  Then using
a dvi->hdmi cable into the tv.

Again, I apologize if I'm posting this in the wrong place.

Best regards.

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