From cd508fe58b07499403e806b558c7f15c90442292 Mon Sep 17 00:00:00 2001 From: Jaroslav Kysela Date: Fri, 26 Mar 2010 10:28:46 +0100 Subject: ALSA: hda-intel - add special 'hwio' model to bypass initialization Using the 'model=hwio' option, the driver bypasses any codec initialization and the reset procedure for codecs is also bypassed. This mode is usefull to enable direct access using hwdep interface (using hdaverb or hda-analyzer tools) and retain codec setup from BIOS. Signed-off-by: Jaroslav Kysela --- Documentation/sound/alsa/HD-Audio.txt | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'Documentation/sound') diff --git a/Documentation/sound/alsa/HD-Audio.txt b/Documentation/sound/alsa/HD-Audio.txt index f4dd3bf99d1..ecacf53a865 100644 --- a/Documentation/sound/alsa/HD-Audio.txt +++ b/Documentation/sound/alsa/HD-Audio.txt @@ -196,6 +196,11 @@ generic parser regardless of the codec. Usually the codec-specific parser is much better than the generic parser (as now). Thus this option is more about the debugging purpose. +Another special meaning has 'model=hwio'. For this model, the driver +bypasses any codec initialization and the reset procedure for codecs +is also bypassed. This mode is usefull to enable direct access using +hwdep interface (using hdaverb or hda-analyzer tools) and retain +codec setup from BIOS. Speaker and Headphone Output ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- cgit v1.2.3