[alsa-devel] [RFC/RFT PATCH] ALSA: hda - hdmi: Add ATI/AMD multi-channel audio support

Rafał Miłecki zajec5 at gmail.com
Fri Sep 27 11:27:53 CEST 2013

2013/9/22 Anssi Hannula <anssi.hannula at iki.fi>:
> AMD just released the documentation needed for multi-channel HDMI
> support, so here is the initial patch adding such support.
> This has been tested on codec 0x1002aa01, revision 0x100200 with the
> exception of custom channel maps, which I intend to test later.
> I'm especially interested in testers with:
> - Older codecs other than 0x1002aa01. My best guess is that the new code
>   should work on them as well, but I'm not really 100% sure.
> - Codec 0x1002aa01 revisions 0x100300 (Rev ID 3) or later (see
>   /proc/asound/cardX/codec#Y). These support individual channel
>   remapping and that code is entirely untested (even for regular
>   5.1/7.1).

Wow, that's a nice (and quick) work :) I was on vacations for the last
week, and only noticed the docs release. Planned to work on that, but
you were much faster :)

I'll test it with my cards, but it'll take me some time (env setup,
cards switching...).

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