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/* |
* 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. |
*/ |
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#ifndef _LINUX_PM_RUNTIME_H |
#define _LINUX_PM_RUNTIME_H |
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#include <linux/device.h> |
#include <linux/pm.h> |
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#include <linux/jiffies.h> |
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/* 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 */ |
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#ifdef CONFIG_PM |
extern struct workqueue_struct *pm_wq; |
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static inline bool queue_pm_work(struct work_struct *work) |
{ |
return queue_work(pm_wq, work); |
} |
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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); |
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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 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); |
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static inline bool pm_children_suspended(struct device *dev) |
{ |
return dev->power.ignore_children |
|| !atomic_read(&dev->power.child_count); |
} |
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static inline void pm_runtime_get_noresume(struct device *dev) |
{ |
atomic_inc(&dev->power.usage_count); |
} |
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static inline void pm_runtime_put_noidle(struct device *dev) |
{ |
atomic_add_unless(&dev->power.usage_count, -1, 0); |
} |
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static inline bool device_run_wake(struct device *dev) |
{ |
return dev->power.run_wake; |
} |
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static inline void device_set_run_wake(struct device *dev, bool enable) |
{ |
dev->power.run_wake = enable; |
} |
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static inline bool pm_runtime_suspended(struct device *dev) |
{ |
return dev->power.runtime_status == RPM_SUSPENDED |
&& !dev->power.disable_depth; |
} |
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static inline bool pm_runtime_active(struct device *dev) |
{ |
return dev->power.runtime_status == RPM_ACTIVE |
|| dev->power.disable_depth; |
} |
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static inline bool pm_runtime_status_suspended(struct device *dev) |
{ |
return dev->power.runtime_status == RPM_SUSPENDED; |
} |
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static inline bool pm_runtime_enabled(struct device *dev) |
{ |
return !dev->power.disable_depth; |
} |
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static inline bool pm_runtime_callbacks_present(struct device *dev) |
{ |
return !dev->power.no_callbacks; |
} |
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static inline void pm_runtime_mark_last_busy(struct device *dev) |
{ |
ACCESS_ONCE(dev->power.last_busy) = jiffies; |
} |
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static inline bool pm_runtime_is_irq_safe(struct device *dev) |
{ |
return dev->power.irq_safe; |
} |
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#else /* !CONFIG_PM */ |
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static inline bool queue_pm_work(struct work_struct *work) { return false; } |
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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; } |
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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) {} |
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static inline bool pm_children_suspended(struct device *dev) { return false; } |
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 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; } |
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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; } |
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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){} |
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#endif /* !CONFIG_PM */ |
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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); |
} |
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static inline int pm_runtime_autosuspend(struct device *dev) |
{ |
return __pm_runtime_suspend(dev, RPM_AUTO); |
} |
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static inline int pm_runtime_resume(struct device *dev) |
{ |
return __pm_runtime_resume(dev, 0); |
} |
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static inline int pm_request_idle(struct device *dev) |
{ |
return __pm_runtime_idle(dev, RPM_ASYNC); |
} |
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static inline int pm_request_resume(struct device *dev) |
{ |
return __pm_runtime_resume(dev, RPM_ASYNC); |
} |
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static inline int pm_request_autosuspend(struct device *dev) |
{ |
return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); |
} |
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static inline int pm_runtime_get(struct device *dev) |
{ |
return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); |
} |
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static inline int pm_runtime_get_sync(struct device *dev) |
{ |
return __pm_runtime_resume(dev, RPM_GET_PUT); |
} |
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static inline int pm_runtime_put(struct device *dev) |
{ |
return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); |
} |
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static inline int pm_runtime_put_autosuspend(struct device *dev) |
{ |
return __pm_runtime_suspend(dev, |
RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); |
} |
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static inline int pm_runtime_put_sync(struct device *dev) |
{ |
return __pm_runtime_idle(dev, RPM_GET_PUT); |
} |
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static inline int pm_runtime_put_sync_suspend(struct device *dev) |
{ |
return __pm_runtime_suspend(dev, RPM_GET_PUT); |
} |
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static inline int pm_runtime_put_sync_autosuspend(struct device *dev) |
{ |
return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); |
} |
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static inline int pm_runtime_set_active(struct device *dev) |
{ |
return __pm_runtime_set_status(dev, RPM_ACTIVE); |
} |
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static inline void pm_runtime_set_suspended(struct device *dev) |
{ |
__pm_runtime_set_status(dev, RPM_SUSPENDED); |
} |
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static inline void pm_runtime_disable(struct device *dev) |
{ |
__pm_runtime_disable(dev, true); |
} |
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static inline void pm_runtime_use_autosuspend(struct device *dev) |
{ |
__pm_runtime_use_autosuspend(dev, true); |
} |
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static inline void pm_runtime_dont_use_autosuspend(struct device *dev) |
{ |
__pm_runtime_use_autosuspend(dev, false); |
} |
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#endif |