[PATCH 1/3] OMAP: PM: formalize idle notifications

Tony Lindgren tony at atomide.com
Fri Oct 22 14:05:53 EDT 2010

* Kevin Hilman <khilman at deeprootsystems.com> [101020 16:22]:
> Currently in the idle path, we have custom function calls into device
> code to handle device specific actions that need to be coordinated CPU
> idle transitions. Rather than continue this ad-hoc method of calling
> device code from the PM core, create a formal way for device/driver
> code to register for idle notifications.
> Idle notifications are done late in the idle path when interrupts are
> disabled, hence use atomic notifier chains.  These notifications will
> also be atomic with respect to CPU idle transitions.


> +EXPORT_SYMBOL_GPL(omap_idle_notifier_register);
> +EXPORT_SYMBOL_GPL(omap_idle_notifier_unregister);

Let's rather set this up as a generic framework to avoid adding
more omap specific frameworks to the drivers.



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