On Sunday, August 21, 2011, Mark Brown wrote: > On Sat, Aug 20, 2011 at 09:14:37PM +0200, Rafael J. Wysocki wrote: > > > I guess you mean the driver here and I'm not really sure it can. > > For instance, the driver may not know what configuration it works in, > > e.g. is there a power domain or a hierarchy of those and how much time > > it takes to power them all down and up and what the power break even is. > > I don't understand why the driver would need to know what situation it's > in. I'd been working on the basis that the idea was that the driver > said what the constraints it has are and then some code with a more > system wide view would make the actual decisions for things outside the > driver domian. That's correct, but in order to figure out a "sensible default" the driver generally would need to know what the expectations with respect to it are. Otherwise it can very well generate a random number and use that. Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
