From 4cb36310848fd17766aa72afd1f2873f54b4e055 Mon Sep 17 00:00:00 2001 From: David Henningsson Date: Thu, 30 Sep 2010 10:12:50 +0200 Subject: ALSA: HDA: Add position_fix=3 module option, and refactor related code What was previously known as via_dmapos_patch, and hard-coded to be used for VIA and ATI controllers, is now configurable through a module option. The background is that some VIA controllers seem to prefer via_dmapos_patch to be turned off. Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai --- Documentation/sound/alsa/HD-Audio.txt | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'Documentation/sound') diff --git a/Documentation/sound/alsa/HD-Audio.txt b/Documentation/sound/alsa/HD-Audio.txt index 278cc2122ea0..c82beb007634 100644 --- a/Documentation/sound/alsa/HD-Audio.txt +++ b/Documentation/sound/alsa/HD-Audio.txt @@ -57,9 +57,11 @@ dead. However, this detection isn't perfect on some devices. In such a case, you can change the default method via `position_fix` option. `position_fix=1` means to use LPIB method explicitly. -`position_fix=2` means to use the position-buffer. 0 is the default -value, the automatic check and fallback to LPIB as described in the -above. If you get a problem of repeated sounds, this option might +`position_fix=2` means to use the position-buffer. +`position_fix=3` means to use a combination of both methods, needed +for some VIA and ATI controllers. 0 is the default value for all other +controllers, the automatic check and fallback to LPIB as described in +the above. If you get a problem of repeated sounds, this option might help. In addition to that, every controller is known to be broken regarding -- cgit v1.2.2