At Thu, 15 Jul 2010 09:36:23 +0200 (CEST), Jiri Kosina wrote: > > On Wed, 14 Jul 2010, Michael Witten wrote: > > > The description has been expanded to explain the time-out > > value provided by the power_save module parameter. > > Michael, > > thanks a lot for the patch. I'd rather let it go through Takashi still > anyway (added to CC). The patch looks good. Michael, could you repost so that I can apply it directly? thanks, Takashi > > Thanks. > > > > > Signed-off-by: Michael Witten <mfwitten@xxxxxxxxx> > > --- > > sound/drivers/Kconfig | 24 +++++++++++++++++++++--- > > 1 files changed, 21 insertions(+), 3 deletions(-) > > > > diff --git a/sound/drivers/Kconfig b/sound/drivers/Kconfig > > index 84714a6..3264600 100644 > > --- a/sound/drivers/Kconfig > > +++ b/sound/drivers/Kconfig > > @@ -170,9 +170,25 @@ config SND_AC97_POWER_SAVE > > AC97 codecs. In this mode, the power-mode is dynamically > > controlled at each open/close. > > > > - The mode is activated by passing power_save=1 option to > > - snd-ac97-codec driver. You can toggle it dynamically over > > - sysfs, too. > > + The mode is activated by passing 'power_save=X' to the > > + snd-ac97-codec driver module, where 'X' is the time-out > > + value, a nonnegative integer that specifies how many > > + seconds of idle time the driver must count before it may > > + put the AC97 into power-save mode; a value of 0 (zero) > > + disables the use of this power-save mode. > > + > > + After the snd-ac97-codec driver module has been loaded, > > + the 'power_save' parameter can be set via sysfs as follows: > > + > > + echo 10 > /sys/module/snd_ac97_codec/parameters/power_save > > + > > + In this case, the time-out is set to 10 seconds; setting > > + the time-out to 1 second (the minimum activation value) > > + isn't recommended because many applications try to reopen > > + the device frequently. A value of 10 seconds would be a > > + good choice for normal operations. > > + > > + See Documentation/sound/alsa/powersave.txt for more details. > > > > config SND_AC97_POWER_SAVE_DEFAULT > > int "Default time-out for AC97 power-save mode" > > @@ -182,4 +198,6 @@ config SND_AC97_POWER_SAVE_DEFAULT > > The default time-out value in seconds for AC97 automatic > > power-save mode. 0 means to disable the power-save mode. > > > > + See SND_AC97_POWER_SAVE for more details. > > + > > endif # SND_DRIVERS > > -- > > 1.7.2.rc1.9.g5b527 > > > > -- > Jiri Kosina > SUSE Labs, Novell Inc. > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
