Introduce a new dev_pm_info flag - platform_resources_managed, to indicate whether platform PM resources such as clocks or resets are managed externally (e.g. by a generic power domain driver) instead of directly by the consumer device driver.
This flag enables device drivers to cooperate with SoC-specific PM domains by conditionally skipping management of clocks and resets when the platform owns them. This idea was discussed on the mailing list [1]. [1] - https://lore.kernel.org/all/CAPDyKFq=BF5f2i_Sr1cmVqtVAMgr=0fqsksl7rhzlkn++y0...@mail.gmail.com/ Signed-off-by: Michal Wilczynski <m.wilczyn...@samsung.com> --- include/linux/device.h | 11 +++++++++++ include/linux/pm.h | 1 + 2 files changed, 12 insertions(+) diff --git a/include/linux/device.h b/include/linux/device.h index 79e49fe494b7c4c70d902886db63c4cfe5b4de4f..3e7a36dd874cfb6b98e2451c7a876989aa9f1913 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -881,6 +881,17 @@ static inline bool device_async_suspend_enabled(struct device *dev) return !!dev->power.async_suspend; } +static inline bool device_platform_resources_pm_managed(struct device *dev) +{ + return dev->power.platform_resources_managed; +} + +static inline void device_platform_resources_set_pm_managed(struct device *dev, + bool val) +{ + dev->power.platform_resources_managed = val; +} + static inline bool device_pm_not_required(struct device *dev) { return dev->power.no_pm; diff --git a/include/linux/pm.h b/include/linux/pm.h index f0bd8fbae4f2c09c63d780bb2528693acf2d2da1..cd6cb59686e4a5e9eaa2701d1e44af2abbfd88d1 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -670,6 +670,7 @@ struct dev_pm_info { bool no_pm:1; bool early_init:1; /* Owned by the PM core */ bool direct_complete:1; /* Owned by the PM core */ + bool platform_resources_managed:1; u32 driver_flags; spinlock_t lock; #ifdef CONFIG_PM_SLEEP -- 2.34.1
