diff options
Diffstat (limited to 'include/linux/pm_runtime.h')
| -rw-r--r-- | include/linux/pm_runtime.h | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index d39dc863f612..7fb5a459847e 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -66,6 +66,7 @@ static inline bool queue_pm_work(struct work_struct *work) extern int pm_generic_runtime_suspend(struct device *dev); extern int pm_generic_runtime_resume(struct device *dev); +extern bool pm_runtime_need_not_resume(struct device *dev); extern int pm_runtime_force_suspend(struct device *dev); extern int pm_runtime_force_resume(struct device *dev); @@ -77,6 +78,8 @@ extern int pm_runtime_get_if_in_use(struct device *dev); extern int pm_schedule_suspend(struct device *dev, unsigned int delay); extern int __pm_runtime_set_status(struct device *dev, unsigned int status); extern int pm_runtime_barrier(struct device *dev); +extern bool pm_runtime_block_if_disabled(struct device *dev); +extern void pm_runtime_unblock(struct device *dev); extern void pm_runtime_enable(struct device *dev); extern void __pm_runtime_disable(struct device *dev, bool check_resume); extern void pm_runtime_allow(struct device *dev); @@ -197,6 +200,17 @@ static inline bool pm_runtime_enabled(struct device *dev) } /** + * pm_runtime_blocked - Check if runtime PM enabling is blocked. + * @dev: Target device. + * + * Do not call this function outside system suspend/resume code paths. + */ +static inline bool pm_runtime_blocked(struct device *dev) +{ + return dev->power.last_status == RPM_BLOCKED; +} + +/** * pm_runtime_has_no_callbacks - Check if runtime PM callbacks may be present. * @dev: Target device. * @@ -241,6 +255,7 @@ static inline bool queue_pm_work(struct work_struct *work) { return false; } static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } +static inline bool pm_runtime_need_not_resume(struct device *dev) {return true; } static inline int pm_runtime_force_suspend(struct device *dev) { return 0; } static inline int pm_runtime_force_resume(struct device *dev) { return 0; } @@ -271,8 +286,11 @@ static inline int pm_runtime_get_if_active(struct device *dev) static inline int __pm_runtime_set_status(struct device *dev, unsigned int status) { return 0; } static inline int pm_runtime_barrier(struct device *dev) { return 0; } +static inline bool pm_runtime_block_if_disabled(struct device *dev) { return true; } +static inline void pm_runtime_unblock(struct device *dev) {} static inline void pm_runtime_enable(struct device *dev) {} static inline void __pm_runtime_disable(struct device *dev, bool c) {} +static inline bool pm_runtime_blocked(struct device *dev) { return true; } static inline void pm_runtime_allow(struct device *dev) {} static inline void pm_runtime_forbid(struct device *dev) {} @@ -556,11 +574,18 @@ static inline int pm_runtime_set_suspended(struct device *dev) * pm_runtime_disable - Disable runtime PM for a device. * @dev: Target device. * - * Prevent the runtime PM framework from working with @dev (by incrementing its - * "blocking" counter). + * Prevent the runtime PM framework from working with @dev by incrementing its + * "disable" counter. + * + * If the counter is zero when this function runs and there is a pending runtime + * resume request for @dev, it will be resumed. If the counter is still zero at + * that point, all of the pending runtime PM requests for @dev will be canceled + * and all runtime PM operations in progress involving it will be waited for to + * complete. * - * For each invocation of this function for @dev there must be a matching - * pm_runtime_enable() call in order for runtime PM to be enabled for it. + * For each invocation of this function for @dev, there must be a matching + * pm_runtime_enable() call, so that runtime PM is eventually enabled for it + * again. */ static inline void pm_runtime_disable(struct device *dev) { |