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| author | Takashi Iwai <tiwai@suse.de> | 2007-08-13 16:10:30 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2007-10-16 15:58:50 +0200 |
| commit | dee1b66ce4f406d36fef70d1dd4360c5f1d26218 (patch) | |
| tree | 0e72125049f8243e5787b16b8d2d77d0e852a306 /Documentation/sound | |
| parent | ae0a8ed8bf9c2edee4b831dee91ae914b9641fdd (diff) | |
| download | linux-dee1b66ce4f406d36fef70d1dd4360c5f1d26218.tar.bz2 | |
[ALSA] hda-intel - Add power_save_controller module option
Add power_save_controller module option instead of define flag.
Also, added descriptions of new module options in ALSA-Configuration.txt.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'Documentation/sound')
| -rw-r--r-- | Documentation/sound/alsa/ALSA-Configuration.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt index f71ed680d33c..2bdabe23bc70 100644 --- a/Documentation/sound/alsa/ALSA-Configuration.txt +++ b/Documentation/sound/alsa/ALSA-Configuration.txt @@ -768,6 +768,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. single_cmd - Use single immediate commands to communicate with codecs (for debugging only) enable_msi - Enable Message Signaled Interrupt (MSI) (default = off) + power_save - Automatic power-saving timtout (in second, 0 = + disable, default = 10) + power_save_controller - Reset HD-audio controller in power-saving mode + (default = on) This module supports one card and autoprobe. @@ -993,6 +997,12 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel ML (see the section "Links and Addresses"). + When CONFIG_SND_HDA_POWER_SAVE is set, two options, power_save and + power_save_controller become available. power_save specifies the + time to turn off the power automatically at idle status. When + power_save_controller is true, the controller is also turned off. + This might result in more obvious click noise at turning on/off. + Note 2: If you get click noises on output, try the module option position_fix=1 or 2. position_fix=1 will use the SD_LPIB register value without FIFO size correction as the current |