On Wed, Nov 25, 2009 at 03:38:04PM +0000, Mark Brown wrote: > On Wed, Nov 25, 2009 at 04:20:52PM +0100, Daniel Mack wrote: > > > Ok - which place would you suggest for it? Is there an ASoC callback I > > can hook on to tell me when the whole codec isn't used anymore? I can > > only see startup/shutdown, but I would need to my own snd_pc_substream > > handling login in there. Other drivers do that in the probe/remove > > set_bias_level(). If the device is idle then the bias will be held in > STANDBY (or OFF in future). If you are happy switching off the analogue > supply separately to the others then turn that one on when in PREPARE or > ON, and kill the others only in OFF. Ok, will do and resend later. Thanks! > > functions, but that won't suffice for my board as we want VA disabled > > whenever possible. > > Are the power savings really that great? If the power saving really is > that critical it seems like a low power focused part might be a more > natural choice... The VA suplpy domain not only powers the codec but a bunch of OPAMPs and the like as well. And yes, for all these, the power saving is significant. Daniel _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
