[alsa-devel] HDA: Enable chipset gcap usage

Takashi Iwai tiwai at suse.de
Tue Jan 15 11:25:34 CET 2008

At Mon, 14 Jan 2008 11:44:27 -0800,
Tobin Davis wrote:
> I tweaked this as promised, and ran it through the checkpatch.pl utility from
> kernel git tree.  I have tested it on my Asus Z62F laptop as well as a few
> systems in my work environment without issue.
> Summary:  hda_intel.c use gcap register to determine number of streams supported
> by southbridge.
> This patch quieries the southbridge for the number of streams supported by the
> southbridge in most chipsets, and reads these values from the chipset directly. 
> Most systems are hardwired for 4 streams in each direction, but newer chipsets
> change that capability.  As a fallback, the old hardcoded method is still
> available.
> Signed off by Tobin Davis <tdavis at dsl-only.net>                                 

Thanks.  I applied the patch after fixing some issues.
(It didn't even compile :)


More information about the Alsa-devel mailing list