[mirror_ubuntu-bionic-kernel.git] / include / linux / pm_runtime.h

/*
 * 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 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_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;
}

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 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; }

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
Commit	Line	Data
5e928f77 RW	1	/*
	2	* pm_runtime.h - Device run-time power management helper functions.
	3	*
	4	* Copyright (C) 2009 Rafael J. Wysocki <rjw@sisk.pl>
	5	*
	6	* This file is released under the GPLv2.
	7	*/
	8
	9	#ifndef _LINUX_PM_RUNTIME_H
	10	#define _LINUX_PM_RUNTIME_H
	11
	12	#include <linux/device.h>
246359d3	13	#include <linux/notifier.h>
5e928f77 RW	14	#include <linux/pm.h>
5e928f77 RW	15
15bcb91d AS	16	#include <linux/jiffies.h>
15bcb91d AS	17
3f9af051 AS	18	/* Runtime PM flag argument bits */
	19	#define RPM_ASYNC 0x01 /* Request is asynchronous */
	20	#define RPM_NOWAIT 0x02 /* Don't wait for concurrent
	21	state change */
140a6c94 AS	22	#define RPM_GET_PUT 0x04 /* Increment/decrement the
140a6c94 AS	23	usage_count */
15bcb91d	24	#define RPM_AUTO 0x08 /* Use autosuspend_delay */
3f9af051	25
717e5d45	26	#ifdef CONFIG_PM
28cb5ef1 RW	27	extern struct workqueue_struct *pm_wq;
	28
	29	static inline bool queue_pm_work(struct work_struct *work)
	30	{
	31	return queue_work(pm_wq, work);
	32	}
	33
717e5d45 UH	34	extern int pm_generic_runtime_suspend(struct device *dev);
717e5d45 UH	35	extern int pm_generic_runtime_resume(struct device *dev);
37f20416 UH	36	extern int pm_runtime_force_suspend(struct device *dev);
37f20416 UH	37	extern int pm_runtime_force_resume(struct device *dev);
5e928f77	38
140a6c94 AS	39	extern int __pm_runtime_idle(struct device *dev, int rpmflags);
	40	extern int __pm_runtime_suspend(struct device *dev, int rpmflags);
	41	extern int __pm_runtime_resume(struct device *dev, int rpmflags);
a436b6a1	42	extern int pm_runtime_get_if_in_use(struct device *dev);
5e928f77	43	extern int pm_schedule_suspend(struct device *dev, unsigned int delay);
5e928f77 RW	44	extern int __pm_runtime_set_status(struct device *dev, unsigned int status);
	45	extern int pm_runtime_barrier(struct device *dev);
	46	extern void pm_runtime_enable(struct device *dev);
	47	extern void __pm_runtime_disable(struct device *dev, bool check_resume);
53823639 RW	48	extern void pm_runtime_allow(struct device *dev);
53823639 RW	49	extern void pm_runtime_forbid(struct device *dev);
7490e442	50	extern void pm_runtime_no_callbacks(struct device *dev);
c7b61de5	51	extern void pm_runtime_irq_safe(struct device *dev);
15bcb91d AS	52	extern void __pm_runtime_use_autosuspend(struct device *dev, bool use);
	53	extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay);
	54	extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev);
00dc9ad1 RW	55	extern void pm_runtime_update_max_time_suspended(struct device *dev,
00dc9ad1 RW	56	s64 delta_ns);
e823407f	57	extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable);
21d5c57b RW	58	extern void pm_runtime_clean_up_links(struct device *dev);
	59	extern void pm_runtime_get_suppliers(struct device *dev);
	60	extern void pm_runtime_put_suppliers(struct device *dev);
baa8809f RW	61	extern void pm_runtime_new_link(struct device *dev);
baa8809f RW	62	extern void pm_runtime_drop_link(struct device *dev);
5e928f77	63
372a12ed UH	64	static inline void pm_suspend_ignore_children(struct device *dev, bool enable)
	65	{
	66	dev->power.ignore_children = enable;
	67	}
	68
5e928f77 RW	69	static inline void pm_runtime_get_noresume(struct device *dev)
	70	{
	71	atomic_inc(&dev->power.usage_count);
	72	}
	73
	74	static inline void pm_runtime_put_noidle(struct device *dev)
	75	{
	76	atomic_add_unless(&dev->power.usage_count, -1, 0);
	77	}
	78
7a1a8eb5 RW	79	static inline bool device_run_wake(struct device *dev)
	80	{
	81	return dev->power.run_wake;
	82	}
	83
	84	static inline void device_set_run_wake(struct device *dev, bool enable)
	85	{
	86	dev->power.run_wake = enable;
	87	}
	88
d690b2cd RW	89	static inline bool pm_runtime_suspended(struct device *dev)
d690b2cd RW	90	{
f08f5a0a RW	91	return dev->power.runtime_status == RPM_SUSPENDED
f08f5a0a RW	92	&& !dev->power.disable_depth;
d690b2cd RW	93	}
d690b2cd RW	94
fbadc58d SL	95	static inline bool pm_runtime_active(struct device *dev)
	96	{
	97	return dev->power.runtime_status == RPM_ACTIVE
	98	\|\| dev->power.disable_depth;
	99	}
	100
f3393b62 KH	101	static inline bool pm_runtime_status_suspended(struct device *dev)
	102	{
	103	return dev->power.runtime_status == RPM_SUSPENDED;
	104	}
	105
4b31db8a RW	106	static inline bool pm_runtime_enabled(struct device *dev)
	107	{
	108	return !dev->power.disable_depth;
	109	}
	110
cb8f51bd RW	111	static inline bool pm_runtime_callbacks_present(struct device *dev)
	112	{
	113	return !dev->power.no_callbacks;
	114	}
	115
15bcb91d AS	116	static inline void pm_runtime_mark_last_busy(struct device *dev)
	117	{
	118	ACCESS_ONCE(dev->power.last_busy) = jiffies;
	119	}
	120
3fb1581e KK	121	static inline bool pm_runtime_is_irq_safe(struct device *dev)
	122	{
	123	return dev->power.irq_safe;
	124	}
	125
d30d819d RW	126	#else /* !CONFIG_PM */
	127
	128	static inline bool queue_pm_work(struct work_struct *work) { return false; }
	129
	130	static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
	131	static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
	132	static inline int pm_runtime_force_suspend(struct device *dev) { return 0; }
	133	static inline int pm_runtime_force_resume(struct device *dev) { return 0; }
5e928f77	134
140a6c94 AS	135	static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
	136	{
	137	return -ENOSYS;
	138	}
	139	static inline int __pm_runtime_suspend(struct device *dev, int rpmflags)
	140	{
	141	return -ENOSYS;
	142	}
	143	static inline int __pm_runtime_resume(struct device *dev, int rpmflags)
	144	{
	145	return 1;
	146	}
5e928f77 RW	147	static inline int pm_schedule_suspend(struct device *dev, unsigned int delay)
	148	{
	149	return -ENOSYS;
	150	}
a436b6a1 RW	151	static inline int pm_runtime_get_if_in_use(struct device *dev)
	152	{
	153	return -EINVAL;
	154	}
5e928f77 RW	155	static inline int __pm_runtime_set_status(struct device *dev,
	156	unsigned int status) { return 0; }
	157	static inline int pm_runtime_barrier(struct device *dev) { return 0; }
	158	static inline void pm_runtime_enable(struct device *dev) {}
	159	static inline void __pm_runtime_disable(struct device *dev, bool c) {}
53823639 RW	160	static inline void pm_runtime_allow(struct device *dev) {}
53823639 RW	161	static inline void pm_runtime_forbid(struct device *dev) {}
5e928f77	162
372a12ed	163	static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {}
5e928f77 RW	164	static inline void pm_runtime_get_noresume(struct device *dev) {}
5e928f77 RW	165	static inline void pm_runtime_put_noidle(struct device *dev) {}
7a1a8eb5 RW	166	static inline bool device_run_wake(struct device *dev) { return false; }
7a1a8eb5 RW	167	static inline void device_set_run_wake(struct device *dev, bool enable) {}
d690b2cd	168	static inline bool pm_runtime_suspended(struct device *dev) { return false; }
fbadc58d	169	static inline bool pm_runtime_active(struct device *dev) { return true; }
f3393b62	170	static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }
4b31db8a	171	static inline bool pm_runtime_enabled(struct device *dev) { return false; }
5e928f77	172
7490e442	173	static inline void pm_runtime_no_callbacks(struct device *dev) {}
c7b61de5	174	static inline void pm_runtime_irq_safe(struct device *dev) {}
3fb1581e	175	static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; }
2f60ba70	176
cb8f51bd	177	static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; }
15bcb91d AS	178	static inline void pm_runtime_mark_last_busy(struct device *dev) {}
	179	static inline void __pm_runtime_use_autosuspend(struct device *dev,
	180	bool use) {}
	181	static inline void pm_runtime_set_autosuspend_delay(struct device *dev,
	182	int delay) {}
	183	static inline unsigned long pm_runtime_autosuspend_expiration(
	184	struct device *dev) { return 0; }
e823407f ML	185	static inline void pm_runtime_set_memalloc_noio(struct device *dev,
e823407f ML	186	bool enable){}
21d5c57b RW	187	static inline void pm_runtime_clean_up_links(struct device *dev) {}
	188	static inline void pm_runtime_get_suppliers(struct device *dev) {}
	189	static inline void pm_runtime_put_suppliers(struct device *dev) {}
baa8809f RW	190	static inline void pm_runtime_new_link(struct device *dev) {}
baa8809f RW	191	static inline void pm_runtime_drop_link(struct device *dev) {}
15bcb91d	192
d30d819d	193	#endif /* !CONFIG_PM */
5e928f77	194
140a6c94 AS	195	static inline int pm_runtime_idle(struct device *dev)
	196	{
	197	return __pm_runtime_idle(dev, 0);
	198	}
	199
	200	static inline int pm_runtime_suspend(struct device *dev)
	201	{
	202	return __pm_runtime_suspend(dev, 0);
	203	}
	204
15bcb91d AS	205	static inline int pm_runtime_autosuspend(struct device *dev)
	206	{
	207	return __pm_runtime_suspend(dev, RPM_AUTO);
	208	}
	209
140a6c94 AS	210	static inline int pm_runtime_resume(struct device *dev)
	211	{
	212	return __pm_runtime_resume(dev, 0);
	213	}
	214
	215	static inline int pm_request_idle(struct device *dev)
	216	{
	217	return __pm_runtime_idle(dev, RPM_ASYNC);
	218	}
	219
	220	static inline int pm_request_resume(struct device *dev)
	221	{
	222	return __pm_runtime_resume(dev, RPM_ASYNC);
	223	}
	224
5fc62aad ML	225	static inline int pm_request_autosuspend(struct device *dev)
	226	{
	227	return __pm_runtime_suspend(dev, RPM_ASYNC \| RPM_AUTO);
	228	}
	229
5e928f77 RW	230	static inline int pm_runtime_get(struct device *dev)
5e928f77 RW	231	{
140a6c94	232	return __pm_runtime_resume(dev, RPM_GET_PUT \| RPM_ASYNC);
5e928f77 RW	233	}
	234
	235	static inline int pm_runtime_get_sync(struct device *dev)
	236	{
140a6c94	237	return __pm_runtime_resume(dev, RPM_GET_PUT);
5e928f77 RW	238	}
	239
	240	static inline int pm_runtime_put(struct device *dev)
	241	{
140a6c94	242	return __pm_runtime_idle(dev, RPM_GET_PUT \| RPM_ASYNC);
5e928f77 RW	243	}
5e928f77 RW	244
15bcb91d AS	245	static inline int pm_runtime_put_autosuspend(struct device *dev)
	246	{
	247	return __pm_runtime_suspend(dev,
	248	RPM_GET_PUT \| RPM_ASYNC \| RPM_AUTO);
	249	}
	250
5e928f77 RW	251	static inline int pm_runtime_put_sync(struct device *dev)
5e928f77 RW	252	{
140a6c94	253	return __pm_runtime_idle(dev, RPM_GET_PUT);
5e928f77 RW	254	}
5e928f77 RW	255
c7b61de5 AS	256	static inline int pm_runtime_put_sync_suspend(struct device *dev)
	257	{
	258	return __pm_runtime_suspend(dev, RPM_GET_PUT);
	259	}
	260
15bcb91d AS	261	static inline int pm_runtime_put_sync_autosuspend(struct device *dev)
	262	{
	263	return __pm_runtime_suspend(dev, RPM_GET_PUT \| RPM_AUTO);
	264	}
	265
5e928f77 RW	266	static inline int pm_runtime_set_active(struct device *dev)
	267	{
	268	return __pm_runtime_set_status(dev, RPM_ACTIVE);
	269	}
	270
b1a60995	271	static inline int pm_runtime_set_suspended(struct device *dev)
5e928f77	272	{
b1a60995	273	return __pm_runtime_set_status(dev, RPM_SUSPENDED);
5e928f77 RW	274	}
	275
	276	static inline void pm_runtime_disable(struct device *dev)
	277	{
	278	__pm_runtime_disable(dev, true);
	279	}
	280
15bcb91d AS	281	static inline void pm_runtime_use_autosuspend(struct device *dev)
	282	{
	283	__pm_runtime_use_autosuspend(dev, true);
	284	}
	285
	286	static inline void pm_runtime_dont_use_autosuspend(struct device *dev)
	287	{
	288	__pm_runtime_use_autosuspend(dev, false);
	289	}
	290
5e928f77	291	#endif