229 lines
6.6 KiB
C
229 lines
6.6 KiB
C
/*
|
|
* 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/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
|