| /* |
| * pm_runtime.h - Device run-time power management helper functions. |
| * |
| * Copyright (C) 2009 Rafael J. Wysocki <[email protected]> |
| * |
| * This file is released under the GPLv2. |
| */ |
| |
| #ifndef _LINUX_PM_RUNTIME_H |
| #define _LINUX_PM_RUNTIME_H |
| |
| #include <linux/device.h> |
| #include <linux/pm.h> |
| |
| #include <linux/jiffies.h> |
| |
| /* Runtime PM flag argument bits */ |
| #define RPM_ASYNC 0x01 /* Request is asynchronous */ |
| #define RPM_NOWAIT 0x02 /* Don't wait for concurrent |
| state change */ |
| #define RPM_GET_PUT 0x04 /* Increment/decrement the |
| usage_count */ |
| #define RPM_AUTO 0x08 /* Use autosuspend_delay */ |
| |
| #ifdef CONFIG_PM_RUNTIME |
| |
| extern struct workqueue_struct *pm_wq; |
| |
| extern int __pm_runtime_idle(struct device *dev, int rpmflags); |
| extern int __pm_runtime_suspend(struct device *dev, int rpmflags); |
| extern int __pm_runtime_resume(struct device *dev, int rpmflags); |
| 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 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); |
| extern void pm_runtime_forbid(struct device *dev); |
| extern int pm_generic_runtime_idle(struct device *dev); |
| extern int pm_generic_runtime_suspend(struct device *dev); |
| extern int pm_generic_runtime_resume(struct device *dev); |
| extern void pm_runtime_no_callbacks(struct device *dev); |
| extern void __pm_runtime_use_autosuspend(struct device *dev, bool use); |
| extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); |
| extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev); |
| |
| static inline bool pm_children_suspended(struct device *dev) |
| { |
| return dev->power.ignore_children |
| || !atomic_read(&dev->power.child_count); |
| } |
| |
| static inline void pm_suspend_ignore_children(struct device *dev, bool enable) |
| { |
| dev->power.ignore_children = enable; |
| } |
| |
| static inline void pm_runtime_get_noresume(struct device *dev) |
| { |
| atomic_inc(&dev->power.usage_count); |
| } |
| |
| static inline void pm_runtime_put_noidle(struct device *dev) |
| { |
| atomic_add_unless(&dev->power.usage_count, -1, 0); |
| } |
| |
| static inline bool device_run_wake(struct device *dev) |
| { |
| return dev->power.run_wake; |
| } |
| |
| static inline void device_set_run_wake(struct device *dev, bool enable) |
| { |
| dev->power.run_wake = enable; |
| } |
| |
| static inline bool pm_runtime_suspended(struct device *dev) |
| { |
| return dev->power.runtime_status == RPM_SUSPENDED; |
| } |
| |
| static inline void pm_runtime_mark_last_busy(struct device *dev) |
| { |
| ACCESS_ONCE(dev->power.last_busy) = jiffies; |
| } |
| |
| #else /* !CONFIG_PM_RUNTIME */ |
| |
| static inline int __pm_runtime_idle(struct device *dev, int rpmflags) |
| { |
| return -ENOSYS; |
| } |
| static inline int __pm_runtime_suspend(struct device *dev, int rpmflags) |
| { |
| return -ENOSYS; |
| } |
| static inline int __pm_runtime_resume(struct device *dev, int rpmflags) |
| { |
| return 1; |
| } |
| static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) |
| { |
| return -ENOSYS; |
| } |
| 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 void pm_runtime_enable(struct device *dev) {} |
| 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 bool pm_children_suspended(struct device *dev) { return false; } |
| static inline void pm_suspend_ignore_children(struct device *dev, bool en) {} |
| static inline void pm_runtime_get_noresume(struct device *dev) {} |
| static inline void pm_runtime_put_noidle(struct device *dev) {} |
| static inline bool device_run_wake(struct device *dev) { return false; } |
| static inline void device_set_run_wake(struct device *dev, bool enable) {} |
| static inline bool pm_runtime_suspended(struct device *dev) { return false; } |
| |
| static inline int pm_generic_runtime_idle(struct device *dev) { return 0; } |
| 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 void pm_runtime_no_callbacks(struct device *dev) {} |
| |
| static inline void pm_runtime_mark_last_busy(struct device *dev) {} |
| static inline void __pm_runtime_use_autosuspend(struct device *dev, |
| bool use) {} |
| static inline void pm_runtime_set_autosuspend_delay(struct device *dev, |
| int delay) {} |
| static inline unsigned long pm_runtime_autosuspend_expiration( |
| struct device *dev) { return 0; } |
| |
| #endif /* !CONFIG_PM_RUNTIME */ |
| |
| static inline int pm_runtime_idle(struct device *dev) |
| { |
| return __pm_runtime_idle(dev, 0); |
| } |
| |
| static inline int pm_runtime_suspend(struct device *dev) |
| { |
| return __pm_runtime_suspend(dev, 0); |
| } |
| |
| static inline int pm_runtime_autosuspend(struct device *dev) |
| { |
| return __pm_runtime_suspend(dev, RPM_AUTO); |
| } |
| |
| static inline int pm_runtime_resume(struct device *dev) |
| { |
| return __pm_runtime_resume(dev, 0); |
| } |
| |
| static inline int pm_request_idle(struct device *dev) |
| { |
| return __pm_runtime_idle(dev, RPM_ASYNC); |
| } |
| |
| static inline int pm_request_resume(struct device *dev) |
| { |
| return __pm_runtime_resume(dev, RPM_ASYNC); |
| } |
| |
| static inline int pm_request_autosuspend(struct device *dev) |
| { |
| return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); |
| } |
| |
| static inline int pm_runtime_get(struct device *dev) |
| { |
| return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); |
| } |
| |
| static inline int pm_runtime_get_sync(struct device *dev) |
| { |
| return __pm_runtime_resume(dev, RPM_GET_PUT); |
| } |
| |
| static inline int pm_runtime_put(struct device *dev) |
| { |
| return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); |
| } |
| |
| static inline int pm_runtime_put_autosuspend(struct device *dev) |
| { |
| return __pm_runtime_suspend(dev, |
| RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); |
| } |
| |
| static inline int pm_runtime_put_sync(struct device *dev) |
| { |
| return __pm_runtime_idle(dev, RPM_GET_PUT); |
| } |
| |
| static inline int pm_runtime_put_sync_autosuspend(struct device *dev) |
| { |
| return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); |
| } |
| |
| static inline int pm_runtime_set_active(struct device *dev) |
| { |
| return __pm_runtime_set_status(dev, RPM_ACTIVE); |
| } |
| |
| static inline void pm_runtime_set_suspended(struct device *dev) |
| { |
| __pm_runtime_set_status(dev, RPM_SUSPENDED); |
| } |
| |
| static inline void pm_runtime_disable(struct device *dev) |
| { |
| __pm_runtime_disable(dev, true); |
| } |
| |
| static inline void pm_runtime_use_autosuspend(struct device *dev) |
| { |
| __pm_runtime_use_autosuspend(dev, true); |
| } |
| |
| static inline void pm_runtime_dont_use_autosuspend(struct device *dev) |
| { |
| __pm_runtime_use_autosuspend(dev, false); |
| } |
| |
| #endif |
