On Tuesday, February 01, 2011, Kevin Hilman wrote: > "Rafael J. Wysocki" <rjw@xxxxxxx> writes: > > > Hi, > > > > This is something we discussed during the last Linux Plumbers Conference. > > > > The problem appears to be that the same device may be used in different > > systems in different configurations such that actions necessary for the > > device's power management can vary from one system to another. In those > > cases the drivers' power management callbacks are generally not sufficient, > > because they can't take the configuration of the whole system into account. > > > > I think this issue may be addressed by adding objects that will represent > > power domains and will provide power management callbacks to be executed > > in addition to the device driver's PM callbacks, which is done by the patch > > below. > > > > Please have a look at it and tell me what you think. > > > > FYI... I just tested this patch on OMAP by converting our existing use > of platform_bus_set_ops() to use this approach by adding a powerdomain > to each omap_device. > > Note we're currently only overriding the runtime_[suspend|resume] > methods, so those are the only paths I've tested. Thanks a lot for the testing! I'm going to prepare a new version of the patch that will add power domain objects at the core level (ie. struct device). Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
