root/include/linux/pm_runtime.h

/* [<][>][^][v][top][bottom][index][help] */

INCLUDED FROM

DEFINITIONS

This source file includes following definitions.
  1. queue_pm_work
  2. queue_pm_work
  3. pm_generic_runtime_suspend
  4. pm_generic_runtime_resume
  5. pm_runtime_force_suspend
  6. pm_runtime_force_resume
  7. pm_children_suspended
  8. pm_runtime_get_noresume
  9. pm_runtime_put_noidle
  10. device_run_wake
  11. device_set_run_wake
  12. pm_runtime_suspended
  13. pm_runtime_active
  14. pm_runtime_status_suspended
  15. pm_runtime_suspended_if_enabled
  16. pm_runtime_enabled
  17. pm_runtime_callbacks_present
  18. pm_runtime_mark_last_busy
  19. __pm_runtime_idle
  20. __pm_runtime_suspend
  21. __pm_runtime_resume
  22. pm_schedule_suspend
  23. __pm_runtime_set_status
  24. pm_runtime_barrier
  25. pm_runtime_enable
  26. __pm_runtime_disable
  27. pm_runtime_allow
  28. pm_runtime_forbid
  29. pm_children_suspended
  30. pm_runtime_get_noresume
  31. pm_runtime_put_noidle
  32. device_run_wake
  33. device_set_run_wake
  34. pm_runtime_suspended
  35. pm_runtime_active
  36. pm_runtime_status_suspended
  37. pm_runtime_suspended_if_enabled
  38. pm_runtime_enabled
  39. pm_runtime_no_callbacks
  40. pm_runtime_irq_safe
  41. pm_runtime_callbacks_present
  42. pm_runtime_mark_last_busy
  43. __pm_runtime_use_autosuspend
  44. pm_runtime_set_autosuspend_delay
  45. pm_runtime_autosuspend_expiration
  46. pm_runtime_set_memalloc_noio
  47. pm_runtime_idle
  48. pm_runtime_suspend
  49. pm_runtime_autosuspend
  50. pm_runtime_resume
  51. pm_request_idle
  52. pm_request_resume
  53. pm_request_autosuspend
  54. pm_runtime_get
  55. pm_runtime_get_sync
  56. pm_runtime_put
  57. pm_runtime_put_autosuspend
  58. pm_runtime_put_sync
  59. pm_runtime_put_sync_suspend
  60. pm_runtime_put_sync_autosuspend
  61. pm_runtime_set_active
  62. pm_runtime_set_suspended
  63. pm_runtime_disable
  64. pm_runtime_use_autosuspend
  65. pm_runtime_dont_use_autosuspend
/*
 * 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);
#else
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; }
#endif

#ifdef CONFIG_PM_RUNTIME

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);

static inline bool pm_children_suspended(struct device *dev)
{
        return dev->power.ignore_children
                || !atomic_read(&dev->power.child_count);
}

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
                && !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_suspended_if_enabled(struct device *dev)
{
        return pm_runtime_status_suspended(dev) && dev->power.disable_depth == 1;
}

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)
{
        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_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_suspended_if_enabled(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_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){}

#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_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 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
/* [<][>][^][v][top][bottom][index][help] */