the following patch was just integrated into master:
Author: Kerry Sheh <shekairui(a)gmail.com>
Date: Wed Nov 23 15:04:13 2011 +0800
south_station: Enable GNB hd audio
Enable HD audio over HDMI.
Tested in Ubuntu-11.10 with ATI Catalyst Proprietary Driver installed.
Signed-off-by: Kerry Sheh <shekairui(a)gmail.com>
Signed-off-by: Kerry Sheh <kerry.she(a)amd.com>
Build-Tested: build bot (Jenkins) at Wed Nov 23 07:43:19 2011, giving +1
Reviewed-By: Marc Jones <marcj303(a)gmail.com> at Tue Dec 20 07:28:39 2011, giving +2