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

[Jaroslav Kysela]

On Wed, 10 Mar 2010, VDR User wrote:

> On Tue, Mar 9, 2010 at 11:58 PM, Jaroslav Kysela <perex at perex.cz> wrote:
>> On Tue, 9 Mar 2010, VDR User wrote:
>>
>>> On Sun, Mar 7, 2010 at 8:46 PM, Wu Fengguang <fengguang.wu at intel.com>
>>> wrote:
>>>>
>>>> CC Jaroslav, maybe he has some idea on
>>>>
>>>>        pcm_hw.c: snd_pcm_hw_delay() SNDRV_PCM_IOCTL_DELAY failed.
>>>>
>>>> On Mon, Mar 08, 2010 at 12:35:37PM +0800, Wei Ni wrote:
>>>>>
>>>>> Hi,
>>>>> 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.
>>>>>
>>>>> Thanks
>>>>> Wei.
>>>>> nvpublic
>>>>>
>>>>> -----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"
>>>>>  MODULE_ALIAS("snd-hda-codec-id:10de0007");
>>>>>  MODULE_ALIAS("snd-hda-codec-id:10de0067");
>>>>>  MODULE_ALIAS("snd-hda-codec-id:10de8001");
>>>>> +MODULE_ALIAS("snd-hda-codec-id:10de000a");
>>>>>  MODULE_ALIAS("snd-hda-codec-id:10de000c");
>>>>>  MODULE_ALIAS("snd-hda-codec-id:10de000b");
>>>>>  MODULE_ALIAS("snd-hda-codec-id:10de000d");
>>>>>
>>>>> 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.
>>>
>>> So nobody has any ideas at all?  This is turning out to be a big
>>> problem and I've discovered it will occur even without anything else
>>> happening on the system.  (originally I thought you needed to do some
>>> other activity.)  I've checked with some other devs I know and
>>> everyone has said the problem is with alsa so it would seem there is a
>>> serious bug somewhere since eventually those errors will happen and
>>> the audio will start skipping like crazy.
>>>
>>> Please let me know if there's anything I can do within my ability to help.
>>
>> Could you do strace for ALSA ioctls? At least having the error code might
>> help to identify this issue.
>
> I don't know how but I'm willing to try if you want to tell me how to
> do it.  Please keep in mind, I'm just an end-user -- not a developer
> or even c coder.  The most I've done is run xine in gdb to help supply
> bug info to those devs.

strace -e trace=open,ioctl <xine>

 					Jaroslav

-----
Jaroslav Kysela <perex at perex.cz>
Linux Kernel Sound Maintainer
ALSA Project, Red Hat, Inc.