"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. Kevin _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
