On Thu, Aug 13, 2009 at 5:46 PM, MarkBrown<broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:> On Thu, Aug 13, 2009 at 05:37:09PM +0800, Barry Song wrote:>>> If so, all codec drivers need to save setting then restore them when>> resume. The physical shutdown depends on boards great. If we get an>> individual programmable PMU/LDO to control the voltage input to this>> chip, I can shutdown power-input to codec physically and save the>> registers when suspend, then restore them when resume. If no this>> unit, should every codec driver handle this case?>> Yes, every CODEC driver that supports suspend and resume needs to handle> this. Since the CODEC drivers generally use a register cache it's> normally just a case of writing the values in the cache back to the> device at the start of resume.>Well. If all chips need this same operation, can it be abstracted tothe soc core layer?_______________________________________________Alsa-devel mailing listAlsa-devel@xxxxxxxxxxxxxxxxxxxx://mailman.alsa-project.org/mailman/listinfo/alsa-devel
