[alsa-devel] [STAC927x HDA codec] 0x1F function not supported bydriver ?

Eric ejaouen at ponctey.fr
Thu Mar 3 12:59:15 CET 2011

Any help please... The complete codec datasheet is available (link
provided). Functional and complete ALSA driver for this HDA codec would
be great.
Thanks in advance, Eric

> Hi everybody I have some news : bad news but I was prepared to : as of
> now the alsa codec driver for STAC9271 is not complete : its ADAT output
> (vendor specific function) support is not complete.
> I tested with the ADAT output option Matthew Ranostay had added in a
> patch ( amixer sset 'IEC958 Playback Source' ADAT )
> and also having changed the 0x21 pin default from 014521xx to 015521xx
> (4 being spdif out and 5 being digital out) : when doing so "alsactl
> restore" responded : unknown hardware HDAintel STAC ; hardware is
> initialized using a guess method   (which is possibly normal )
> In jack I only had 2 alsa outputs (allways using card0 device 1 : "STAC
> digital").
> Maybe the problem is that ADATout Node 0x1F is not detailled enough in
> the driver ?
> here is COMPLETE codec datasheet (page185 for 0x1F node ; page 155 for
> 0x21 digOUT node):
> http://pdf1.alldatasheet.com/datasheet-pdf/view/199321/IDT/STAC9271.html
> here a alsa-info.sh of me (before changing to 015521xx pin config):
> www.alsa-project.org/db/?f=297fa42ac3c439e3ca9336d1fa525a2cadabdae6
> Hoping to get help to at least try to make it work : I bought intel
> DP35DP motherboard ONLY for the advertised "ADAToutput feature".
> Thanks a lot in advance, Eric
>> Hi Steven,
>> I have studied the hd audio documents :
>> Please make sure the pin default is actually 015521xx when in ADAT mode
>> (instead of config default 014521xx ) .
>> Please copy me your alsainfo script if it still does not work.
>> Matthew Ranostay is right : really not much is missing or wrong for ADAT
>> to work.
>> Thanks everybody for future help, Eric
>> Tellman, Steven a écrit :
>>> It doesn't work. The option comes up, but no dice. Doesn't lock to the
>>> receiver that has ADAT support.
>>> Hello Eric,
>>> You should run the latest ALSA from the git tree because I added a codec
>>> specific SPDIF output control control for that chipset.
>>> ....
>>>  417 static const char *stac927x_spdif_labels[5] = {
>>>  418     "Digital Playback", "ADAT", "Analog Mux 1",
>>>  419     "Analog Mux 2", "Analog Mux 3"
>>>  420 };
>>> ....
>>> I haven't tested ADAT output though but I have no reason to
>>> think it wouldn't work.
>>> Thanks,
>>> Matt Ranostay
>>> Eric wrote:
>>>> In their handbook, motherboard intel DP35DP and others with STAC927x
>>> (in
>>>> the codec datasheet also ADAT output is featured on older sigmatel
>>>> STAC9271 and now IDT STAC9274 only) advertise ADAT output possible on
>>>> their toslink.
>>>> DP35DP and other intel boards are proven to have the ADAT output
>>> working
>>>> under windows.
>>>> Is it working in Alsa ? Many HTPC users would love that... I would !
>>>> Anybody from intel or IDT/sigmatel to confirm (by checking the
>>> sigmatel
>>>> STAC927x hda codec driver) that it will work ?
>>>> I want these intel motherboards only for this ADAT output feature and
>>> I
>>>> am a linux only user so I would like to know before buying...
>>>> I want to be sure someone would make the necessary changes to the hda
>>>> sigmatel codec alsa driver so it would work.
>>>> Thank you everybody
>>>>>> Is the ADAT output of the IDT (sigmatel) STAC927x HDA codec
>>> supported in
>>>>>> alsa ?
>>>>>> If not could someone please try to add this incredibly nice feature
>>> in
>>>>>> the existing alsa driver ?
>>>>> Do you have any HD-audio device with ADAT?
>>>>> IIRC, there is no specific verbs for ADAT on STAC927x...
>>>>> Takashi

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