On Thu, May 17, 2012 at 3:52 AM, Shilimkar, Santosh <[email protected]> wrote: > On Thu, May 17, 2012 at 12:34 PM, Shilimkar, Santosh > <[email protected]> wrote: >> On Thu, May 17, 2012 at 4:12 AM, Kevin Hilman <[email protected]> wrote: >>> Tero Kristo <[email protected]> writes: >>> [...] >>> - Rather than hooking into omap4_enter_lowpower(), should use >>> the cluster PM enter/exit notifier chain. >>> >> This is again specific to device OFF only and not related to CPU >> cluster state as such. So I don't think notifiers should be used here. >> >> O.w even when we attempt just MPU OSWR C-state, all these functions will >> get called in notifier chain. >> > Just a thought, we can have a separate notifier chain for device OFF. It can > allow use to get rid of 'enable_off_mode" kind of flags and can be > used by many drivers too.
Like the overall idea, but one minor dumb concern might be sequencing of notifiers - OFF entry and restore needs things to be executed in a specific sequence. How do we plan to ensure the sequence is maintained in a notifier call chain? one possible option might be a "priority" based scheme? Regards, Nishanth Menon -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
