path: root/Documentation/sound
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authorTakashi Iwai <tiwai@suse.de>2013-01-09 11:15:13 +0100
committerTakashi Iwai <tiwai@suse.de>2013-01-09 11:15:13 +0100
commit6ab317419c62850a71e2adfd1573e5ee87d8774f (patch)
treecb5f0fa631f10797649e40faa6dc257ad72c769c /Documentation/sound
parentf4f0a8c4783a0258f2d0020a67fd619ce41a02a3 (diff)
ALSA: hda - Allow power_save_controller option override DCAPS
Change the power_save_controller option to bint from bool so that user can override the runtime PM capability bit and force to enable or disable the runtime PM. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation/sound')
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index b9cfd339a6fa..ce6581c8ca26 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -890,8 +890,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)
power_save - Automatic power-saving timeout (in second, 0 =
- power_save_controller - Reset HD-audio controller in power-saving mode
- (default = on)
+ power_save_controller - Support runtime D3 of HD-audio controller
+ (-1 = on for supported chip (default), false = off,
+ true = force to on even for unsupported hardware)
align_buffer_size - Force rounding of buffer/period sizes to multiples
of 128 bytes. This is more efficient in terms of memory
access but isn't required by the HDA spec and prevents

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