Re: [PATCH V2 0/3] PM: Enable option of re-use runtime PM callbacksat system suspend

[Ulf Hansson]

On 10 December 2013 14:37, Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote:
> To put devices into low power state during system suspend, it is convenient
> for some runtime PM supported power domains, subsystems and drivers to have
> the option of re-using and invoking the runtime PM callbacks from their system
> PM callbacks.
>
> The benefit is that we don't need to implement wrapper functions which
> handles runtime PM resourses, typically called from both runtime PM and system
> PM callbacks.
>
> Some new helper macros for defining the PM callbacks are added.
>
> SET_PM_RUNTIME_PM_OPS; to define runtime PM callbacks for CONFIG_PM instead of
> CONFIG_PM_RUNTIME.
>
> SET_LATE_SYSTEM_SLEEP_PM_OPS; to define common late/early system PM callbacks,
> same approach is applicable to the existing SET_SYSTEM_SLEEP_PM_OPS which
> defines common suspend/resume system PM callbacks.
>
> A minor fix was needed for the platform bus, which runtime PM callbacks are set
> to the pm_generic_runtime_suspend|resume functions. These were implemented only
> for CONFIG_PM_RUNTIME and thus the platform bus prevented driver's runtime PM
> callbacks to be invoked when only CONFIG_PM_SLEEP was used. We move them into
> CONFIG_PM to resolve the problem.
>
> Changes in v2:
>         Updated commit messages to try to better reflect the changes.
>         Removed the below patches from this patch set. Let's leave those to be
>         addressed separately, if needed.
>         - PM / Sleep: Add pm_generic functions to re-use runtime PM callbacks
>         - drm/exynos: Convert to suspend_late/resume_early callbacks for fimc
>
>
> Ulf Hansson (3):
>   PM / Runtime: Add second macro for definition of runtime PM callbacks
>   PM / Runtime: Implement the pm_generic_runtime functions for
>     CONFIG_PM
>   PM / Sleep: Add macro to define common late/early system PM callbacks
>
>  drivers/base/power/generic_ops.c |    4 ++--
>  include/linux/pm.h               |   21 +++++++++++++++++++++
>  include/linux/pm_runtime.h       |   12 ++++++++----
>  3 files changed, 31 insertions(+), 6 deletions(-)
>
> --
> 1.7.9.5
>

Hi,

Just wanted to send a kind ping on this patchset.

Would be nice to try to conclude on the way forward after the quite
long and good discussions we had around this topic.

Kind regards
Uffe
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