kernel/linux.git/include/linux/pm_runtime.h, branch v6.6.132

PM: runtime: Add new devm functions

2025-10-23T14:16:39+00:00

[ Upstream commit 73db799bf5efc5a04654bb3ff6c9bf63a0dfa473 ] Add `devm_pm_runtime_set_active_enabled()` and `devm_pm_runtime_get_noresume()` for simplifying common cases in drivers. Signed-off-by: Bence Csókás Link: https://patch.msgid.link/20250327195928.680771-3-csokas.bence@prolan.hu Signed-off-by: Rafael J. Wysocki Stable-dep-of: 0792c1984a45 ("iio: imu: inv_icm42600: Simplify pm_runtime setup") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

PM: runtime: Simplify pm_runtime_get_if_active() usage

2025-08-28T14:28:42+00:00

[ Upstream commit c0ef3df8dbaef51ee4cfd58a471adf2eaee6f6b3 ] There are two ways to opportunistically increment a device's runtime PM usage count, calling either pm_runtime_get_if_active() or pm_runtime_get_if_in_use(). The former has an argument to tell whether to ignore the usage count or not, and the latter simply calls the former with ign_usage_count set to false. The other users that want to ignore the usage_count will have to explicitly set that argument to true which is a bit cumbersome. To make this function more practical to use, remove the ign_usage_count argument from the function. The main implementation is in a static function called pm_runtime_get_conditional() and implementations of pm_runtime_get_if_active() and pm_runtime_get_if_in_use() are moved to runtime.c. Signed-off-by: Sakari Ailus Reviewed-by: Alex Elder Reviewed-by: Laurent Pinchart Acked-by: Takashi Iwai # sound/ Reviewed-by: Jacek Lawrynowicz # drivers/accel/ivpu/ Acked-by: Rodrigo Vivi # drivers/gpu/drm/i915/ Reviewed-by: Rodrigo Vivi Acked-by: Bjorn Helgaas # drivers/pci/ Signed-off-by: Rafael J. Wysocki [ Removed changes to code that didn't exist in older trees ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

PM: sleep: Adjust check before setting power.must_resume

2025-04-10T12:37:26+00:00

[ Upstream commit eeb87d17aceab7803a5a5bcb6cf2817b745157cf ] The check before setting power.must_resume in device_suspend_noirq() does not take power.child_count into account, but it should do that, so use pm_runtime_need_not_resume() in it for this purpose and adjust the comment next to it accordingly. Fixes: 107d47b2b95e ("PM: sleep: core: Simplify the SMART_SUSPEND flag handling") Signed-off-by: Rafael J. Wysocki Reviewed-by: Ulf Hansson Link: https://patch.msgid.link/3353728.44csPzL39Z@rjwysocki.net Signed-off-by: Sasha Levin

PM: runtime: Remove unsued extern declaration of pm_runtime_update_max_time_suspended()

2023-08-22T19:31:57+00:00

Commit 76e267d822f2 ("PM / Runtime: Remove device fields related to suspend time, v2") left behind this. Signed-off-by: YueHaibing Signed-off-by: Rafael J. Wysocki

PM: Improve EXPORT_*_DEV_PM_OPS macros

2022-10-04T18:52:38+00:00

Update the _EXPORT_DEV_PM_OPS() internal macro. It was not used anywhere outside pm.h and pm_runtime.h, so it is safe to update it. Before, this macro would take a few parameters to be used as sleep and runtime callbacks. This made it unsuitable to use with different callbacks, for instance the "noirq" ones. It is now semantically different: instead of creating a conditionally exported dev_pm_ops structure, it only contains part of the definition. This macro should however never be used directly (hence the trailing underscore). Instead, the following four macros are provided: - EXPORT_DEV_PM_OPS(name) - EXPORT_GPL_DEV_PM_OPS(name) - EXPORT_NS_DEV_PM_OPS(name, ns) - EXPORT_NS_GPL_DEV_PM_OPS(name, ns) For instance, it is now possible to conditionally export noirq suspend/resume PM functions like this: EXPORT_GPL_DEV_PM_OPS(foo_pm_ops) = { NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) }; The existing helper macros EXPORT_*_SIMPLE_DEV_PM_OPS() and EXPORT_*_RUNTIME_DEV_PM_OPS() have been updated to use these new macros. Signed-off-by: Paul Cercueil Reviewed-by: Jonathan Cameron Signed-off-by: Rafael J. Wysocki

PM: runtime: Redefine pm_runtime_release_supplier()

2022-07-01T19:04:02+00:00

Instead of passing an extra bool argument to pm_runtime_release_supplier(), make its callers take care of triggering a runtime-suspend of the supplier device as needed. No expected functional impact. Suggested-by: Greg Kroah-Hartman Signed-off-by: Rafael J. Wysocki Reviewed-by: Greg Kroah-Hartman Cc: 5.1+ # 5.1+

PM: core: Add NS varients of EXPORT[_GPL]_SIMPLE_DEV_PM_OPS and runtime pm equiv

2022-04-05T18:16:34+00:00

As more drivers start to use namespaces, we need to have varients of these useful macros that allow the export to be in a particular namespace. Signed-off-by: Jonathan Cameron Cc: Paul Cercueil Signed-off-by: Rafael J. Wysocki

PM: runtime: Have devm_pm_runtime_enable() handle pm_runtime_dont_use_autosuspend()

2022-03-04T17:26:54+00:00

The PM Runtime docs say: Drivers in ->remove() callback should undo the runtime PM changes done in ->probe(). Usually this means calling pm_runtime_disable(), pm_runtime_dont_use_autosuspend() etc. From grepping code, it's clear that many people aren't aware of the need to call pm_runtime_dont_use_autosuspend(). When brainstorming solutions, one idea that came up was to leverage the new-ish devm_pm_runtime_enable() function. The idea here is that: * When the devm action is called we know that the driver is being removed. It's the perfect time to undo the use_autosuspend. * The code of pm_runtime_dont_use_autosuspend() already handles the case of being called when autosuspend wasn't enabled. Suggested-by: Laurent Pinchart Signed-off-by: Douglas Anderson Reviewed-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki

PM: runtime: Add EXPORT[_GPL]_RUNTIME_DEV_PM_OPS macros

2022-01-12T18:59:05+00:00

Similar to EXPORT[_GPL]_SIMPLE_DEV_PM_OPS, but for users with runtime-PM suspend/resume callbacks. Signed-off-by: Paul Cercueil Acked-by: Jonathan Cameron Reviewed-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki

PM: runtime: Add DEFINE_RUNTIME_DEV_PM_OPS() macro

2022-01-12T18:59:05+00:00

A lot of drivers create a dev_pm_ops struct with the system sleep suspend/resume callbacks set to pm_runtime_force_suspend() and pm_runtime_force_resume(). These drivers can now use the DEFINE_RUNTIME_DEV_PM_OPS() macro, which will use pm_runtime_force_{suspend,resume}() as the system sleep callbacks, while having the same dead code removal characteristic that is already provided by DEFINE_SIMPLE_DEV_PM_OPS(). Signed-off-by: Paul Cercueil Acked-by: Jonathan Cameron Reviewed-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki