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