[PATCH v2 2/4] pm: runtime: Add new devm functions
From: Bence Csókás <hidden>
Date: 2025-01-24 08:56:57
Also in:
dmaengine, linux-pm, linux-spi, lkml
Subsystem:
driver core, kobjects, debugfs and sysfs, hibernation (aka software suspend, aka swsusp), power management core, suspend to ram, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
Add `devm_pm_runtime_set_active()` and `devm_pm_runtime_get_noresume()` for simplifying common use cases in drivers. Signed-off-by: Bence Csókás <redacted> --- drivers/base/power/runtime.c | 36 ++++++++++++++++++++++++++++++++++++ include/linux/pm_runtime.h | 4 ++++ 2 files changed, 40 insertions(+)
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 2ee45841486b..f0a6c64bec19 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c@@ -1545,6 +1545,24 @@ void pm_runtime_enable(struct device *dev) } EXPORT_SYMBOL_GPL(pm_runtime_enable); +static void pm_runtime_set_suspended_action(void *data) +{ + pm_runtime_set_suspended(data); +} + +/** + * devm_pm_runtime_set_active - devres-enabled version of pm_runtime_set_active. + * + * @dev: Device to handle. + */ +int devm_pm_runtime_set_active(struct device *dev) +{ + pm_runtime_set_active(dev); + + return devm_add_action_or_reset(dev, pm_runtime_set_suspended_action, dev); +} +EXPORT_SYMBOL_GPL(devm_pm_runtime_set_active); + static void pm_runtime_disable_action(void *data) { pm_runtime_dont_use_autosuspend(data);
@@ -1567,6 +1585,24 @@ int devm_pm_runtime_enable(struct device *dev) } EXPORT_SYMBOL_GPL(devm_pm_runtime_enable); +static void pm_runtime_put_noidle_action(void *data) +{ + pm_runtime_put_noidle(data); +} + +/** + * devm_pm_runtime_get_noresume - devres-enabled version of pm_runtime_get_noresume. + * + * @dev: Device to handle. + */ +int devm_pm_runtime_get_noresume(struct device *dev) +{ + pm_runtime_get_noresume(dev); + + return devm_add_action_or_reset(dev, pm_runtime_put_noidle_action, dev); +} +EXPORT_SYMBOL_GPL(devm_pm_runtime_get_noresume); + /** * pm_runtime_forbid - Block runtime PM of a device. * @dev: Device to handle.
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index d39dc863f612..d7eca86150b8 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h@@ -93,7 +93,9 @@ extern void pm_runtime_new_link(struct device *dev); extern void pm_runtime_drop_link(struct device_link *link); extern void pm_runtime_release_supplier(struct device_link *link); +int devm_pm_runtime_set_active(struct device *dev); extern int devm_pm_runtime_enable(struct device *dev); +int devm_pm_runtime_get_noresume(struct device *dev); /** * pm_suspend_ignore_children - Set runtime PM behavior regarding children.
@@ -276,7 +278,9 @@ static inline void __pm_runtime_disable(struct device *dev, bool c) {} static inline void pm_runtime_allow(struct device *dev) {} static inline void pm_runtime_forbid(struct device *dev) {} +static inline int devm_pm_runtime_set_active(struct device *dev) { return 0; } static inline int devm_pm_runtime_enable(struct device *dev) { return 0; } +static inline int devm_pm_runtime_get_noresume(struct device *dev) { return 0; } static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {} static inline void pm_runtime_get_noresume(struct device *dev) {}
--
2.48.1