| /* | |
| * pm_runtime.h - Device run-time power management helper functions. | |
| * | |
| * Copyright (C) 2009 Rafael J. Wysocki <rjw@sisk.pl> | |
| * | |
| * This file is released under the GPLv2. | |
| */ | |
| #ifndef _LINUX_PM_RUNTIME_H | |
| #define _LINUX_PM_RUNTIME_H | |
| #include <linux/device.h> | |
| #include <linux/notifier.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 | |
| extern struct workqueue_struct *pm_wq; | |
| static inline bool queue_pm_work(struct work_struct *work) | |
| { | |
| return queue_work(pm_wq, work); | |
| } | |
| extern int pm_generic_runtime_suspend(struct device *dev); | |
| extern int pm_generic_runtime_resume(struct device *dev); | |
| extern int pm_runtime_force_suspend(struct device *dev); | |
| extern int pm_runtime_force_resume(struct device *dev); | |
| 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_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 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 void pm_runtime_no_callbacks(struct device *dev); | |
| extern void pm_runtime_irq_safe(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); | |
| extern void pm_runtime_update_max_time_suspended(struct device *dev, | |
| s64 delta_ns); | |
| extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable); | |
| extern void pm_runtime_clean_up_links(struct device *dev); | |
| extern void pm_runtime_get_suppliers(struct device *dev); | |
| extern void pm_runtime_put_suppliers(struct device *dev); | |
| extern void pm_runtime_new_link(struct device *dev); | |
| extern void pm_runtime_drop_link(struct device *dev); | |
| 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 pm_runtime_suspended(struct device *dev) | |
| { | |
| return dev->power.runtime_status == RPM_SUSPENDED | |
| && !dev->power.disable_depth; | |
| } | |
| static inline bool pm_runtime_active(struct device *dev) | |
| { | |
| return dev->power.runtime_status == RPM_ACTIVE | |
| || dev->power.disable_depth; | |
| } | |
| static inline bool pm_runtime_status_suspended(struct device *dev) | |
| { | |
| return dev->power.runtime_status == RPM_SUSPENDED; | |
| } | |
| static inline bool pm_runtime_enabled(struct device *dev) | |
| { | |
| return !dev->power.disable_depth; | |
| } | |
| static inline bool pm_runtime_callbacks_present(struct device *dev) | |
| { | |
| return !dev->power.no_callbacks; | |
| } | |
| static inline void pm_runtime_mark_last_busy(struct device *dev) | |
| { | |
| WRITE_ONCE(dev->power.last_busy, jiffies); | |
| } | |
| static inline bool pm_runtime_is_irq_safe(struct device *dev) | |
| { | |
| return dev->power.irq_safe; | |
| } | |
| #else /* !CONFIG_PM */ | |
| 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 int pm_runtime_force_suspend(struct device *dev) { return 0; } | |
| static inline int pm_runtime_force_resume(struct device *dev) { return 0; } | |
| 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_get_if_in_use(struct device *dev) | |
| { | |
| return -EINVAL; | |
| } | |
| 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 void pm_suspend_ignore_children(struct device *dev, bool enable) {} | |
| static inline void pm_runtime_get_noresume(struct device *dev) {} | |
| static inline void pm_runtime_put_noidle(struct device *dev) {} | |
| static inline bool pm_runtime_suspended(struct device *dev) { return false; } | |
| static inline bool pm_runtime_active(struct device *dev) { return true; } | |
| static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } | |
| static inline bool pm_runtime_enabled(struct device *dev) { return false; } | |
| static inline void pm_runtime_no_callbacks(struct device *dev) {} | |
| static inline void pm_runtime_irq_safe(struct device *dev) {} | |
| static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; } | |
| static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } | |
| 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; } | |
| static inline void pm_runtime_set_memalloc_noio(struct device *dev, | |
| bool enable){} | |
| static inline void pm_runtime_clean_up_links(struct device *dev) {} | |
| static inline void pm_runtime_get_suppliers(struct device *dev) {} | |
| static inline void pm_runtime_put_suppliers(struct device *dev) {} | |
| static inline void pm_runtime_new_link(struct device *dev) {} | |
| static inline void pm_runtime_drop_link(struct device *dev) {} | |
| #endif /* !CONFIG_PM */ | |
| 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_suspend(struct device *dev) | |
| { | |
| return __pm_runtime_suspend(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 int pm_runtime_set_suspended(struct device *dev) | |
| { | |
| return __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 |