[alsa-devel] multistream singlechanel DACs

[Raymond Yau]

2012-8-24 下午10:07 於 "powierski at mediascore.de" <powierski at mediascore.de> 寫道：
>
>
>
> Thank you for your help Raymond.
>
> the alsa-info.sh output is
> http://www.alsa-project.org/db/?f=bebb43deb4c3911cfe8a2181925b9723dfee0993
> and attached.
> bios table (also attached): I tried separate associations, also
association 0Fh,
> always sequence 0.
> both worked for win7. However it was important to have different
device_type -
> otherwise the outputs are only visible but not quite operational.
>
> documentation say "all dac support independent 16/20/24-bit,
> 44.1k/48k/96k/192kHz sample rate",
> actually it would be perfect to have 4+2 DACs if I can route it to
my-defined
> outputs. Also 2+2 is good, I need another 2 as a mixer out - analog
> pass-through- this would be configured later by application.

http://www.intel.com/support/motherboards/desktop/sb/cs-020642.htm#multistream

do your hardware using headphones , line out jacks or internal stereo
speakers ?

>
> as you write, this was seen working in another hardware -
> obviously my problem can be solved by proper configuration - question is
only
> how deep I have to dive.
>
>
> for now I will try to find out what is "alt_analog_playback" - maybe then
i can
> do configuration/routing by sending verbs to pin and mixer widgets.
>
>

there was a untested patch for desktop using realtek codec alc892 (7.1 + 2)

http://comments.gmane.org/gmane.linux.alsa.devel/84653