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authorTakashi Iwai <tiwai@suse.de>2005-05-12 08:26:27 -0400
committerJaroslav Kysela <perex@suse.cz>2005-05-29 04:08:30 -0400
commitc74db86bcf0897cdd4dc1f85ae0d76ef59aaeb20 (patch)
tree07ca89ae966291074bdf5eea73aaaed14edb89dd /Documentation/sound/alsa
parent091bf4dcab10b083f944d4eafbe0c734786485fe (diff)
[ALSA] Add position_fix module option
Documentation,HDA Intel driver Added position_fix module option to HDA-intel driver for fixing up the DMA position (possibly hardware-) bugs. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation/sound/alsa')
-rw-r--r--Documentation/sound/alsa/ALSA-Configuration.txt9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index c69581ca2a34..ef07506e583c 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -618,6 +618,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
618 Module for Intel HD Audio (ICH6, ICH6M, ICH7) 618 Module for Intel HD Audio (ICH6, ICH6M, ICH7)
619 619
620 model - force the model name 620 model - force the model name
621 position_fix - Fix DMA pointer (0 = FIFO size, 1 = none, 2 = POSBUF)
621 622
622 Module supports up to 8 cards. 623 Module supports up to 8 cards.
623 624
@@ -643,6 +644,14 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
643 full_dig 6-jack in back, 2-jack in front, SPDIF I/O 644 full_dig 6-jack in back, 2-jack in front, SPDIF I/O
644 allout 5-jack in back, 2-jack in front, SPDIF out 645 allout 5-jack in back, 2-jack in front, SPDIF out
645 646
647 Note 2: If you get click noises on output, try the module option
648 position_fix=1 or 2. position_fix=1 will use the SD_LPIB
649 register value without FIFO size correction as the current
650 DMA pointer. position_fix=2 will make the driver to use
651 the position buffer instead of reading SD_LPIB register.
652 (Usually SD_LPLIB register is more accurate than the
653 position buffer.)
654
646 Module snd-hdsp 655 Module snd-hdsp
647 --------------- 656 ---------------
648 657