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PM: Use dev_name() in core device suspend and resume routines
[deliverable/linux.git] / include / linux / pm_runtime.h
CommitLineData
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>
13#include <linux/pm.h>
14
15bcb91d
AS		 15#include <linux/jiffies.h>
16
3f9af051
AS		 17/* Runtime PM flag argument bits */
18#define RPM_ASYNC 0x01 /* Request is asynchronous */
19#define RPM_NOWAIT 0x02 /* Don't wait for concurrent
20 state change */
140a6c94
AS		 21#define RPM_GET_PUT 0x04 /* Increment/decrement the
22 usage_count */
15bcb91d 23#define RPM_AUTO 0x08 /* Use autosuspend_delay */
3f9af051 24
5e928f77
RW		 25#ifdef CONFIG_PM_RUNTIME
26
27extern struct workqueue_struct *pm_wq;
28
140a6c94
AS		 29extern int __pm_runtime_idle(struct device *dev, int rpmflags);
30extern int __pm_runtime_suspend(struct device *dev, int rpmflags);
31extern int __pm_runtime_resume(struct device *dev, int rpmflags);
5e928f77 32extern int pm_schedule_suspend(struct device *dev, unsigned int delay);
5e928f77
RW		 33extern int __pm_runtime_set_status(struct device *dev, unsigned int status);
34extern int pm_runtime_barrier(struct device *dev);
35extern void pm_runtime_enable(struct device *dev);
36extern void __pm_runtime_disable(struct device *dev, bool check_resume);
53823639
RW		 37extern void pm_runtime_allow(struct device *dev);
38extern void pm_runtime_forbid(struct device *dev);
2f60ba70
RW		 39extern int pm_generic_runtime_idle(struct device *dev);
40extern int pm_generic_runtime_suspend(struct device *dev);
41extern int pm_generic_runtime_resume(struct device *dev);
7490e442 42extern void pm_runtime_no_callbacks(struct device *dev);
c7b61de5 43extern void pm_runtime_irq_safe(struct device *dev);
15bcb91d
AS		 44extern void __pm_runtime_use_autosuspend(struct device *dev, bool use);
45extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay);
46extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev);
5e928f77
RW		 47
48static inline bool pm_children_suspended(struct device *dev)
49{
50 return dev->power.ignore_children
51 || !atomic_read(&dev->power.child_count);
52}
53
54static inline void pm_suspend_ignore_children(struct device *dev, bool enable)
55{
56 dev->power.ignore_children = enable;
57}
58
59static inline void pm_runtime_get_noresume(struct device *dev)
60{
61 atomic_inc(&dev->power.usage_count);
62}
63
64static inline void pm_runtime_put_noidle(struct device *dev)
65{
66 atomic_add_unless(&dev->power.usage_count, -1, 0);
67}
68
7a1a8eb5
RW		 69static inline bool device_run_wake(struct device *dev)
70{
71 return dev->power.run_wake;
72}
73
74static inline void device_set_run_wake(struct device *dev, bool enable)
75{
76 dev->power.run_wake = enable;
77}
78
d690b2cd
RW		 79static inline bool pm_runtime_suspended(struct device *dev)
80{
f08f5a0a
RW		 81 return dev->power.runtime_status == RPM_SUSPENDED
82 && !dev->power.disable_depth;
d690b2cd
RW		 83}
84
15bcb91d
AS		 85static inline void pm_runtime_mark_last_busy(struct device *dev)
86{
87 ACCESS_ONCE(dev->power.last_busy) = jiffies;
88}
89
5e928f77
RW		 90#else /* !CONFIG_PM_RUNTIME */
91
140a6c94
AS		 92static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
93{
94 return -ENOSYS;
95}
96static inline int __pm_runtime_suspend(struct device *dev, int rpmflags)
97{
98 return -ENOSYS;
99}
100static inline int __pm_runtime_resume(struct device *dev, int rpmflags)
101{
102 return 1;
103}
5e928f77
RW		 104static inline int pm_schedule_suspend(struct device *dev, unsigned int delay)
105{
106 return -ENOSYS;
107}
5e928f77
RW		 108static inline int __pm_runtime_set_status(struct device *dev,
109 unsigned int status) { return 0; }
110static inline int pm_runtime_barrier(struct device *dev) { return 0; }
111static inline void pm_runtime_enable(struct device *dev) {}
112static inline void __pm_runtime_disable(struct device *dev, bool c) {}
53823639
RW		 113static inline void pm_runtime_allow(struct device *dev) {}
114static inline void pm_runtime_forbid(struct device *dev) {}
5e928f77
RW		 115
116static inline bool pm_children_suspended(struct device *dev) { return false; }
117static inline void pm_suspend_ignore_children(struct device *dev, bool en) {}
118static inline void pm_runtime_get_noresume(struct device *dev) {}
119static inline void pm_runtime_put_noidle(struct device *dev) {}
7a1a8eb5
RW		 120static inline bool device_run_wake(struct device *dev) { return false; }
121static inline void device_set_run_wake(struct device *dev, bool enable) {}
d690b2cd 122static inline bool pm_runtime_suspended(struct device *dev) { return false; }
5e928f77 123
2f60ba70
RW		 124static inline int pm_generic_runtime_idle(struct device *dev) { return 0; }
125static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
126static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
7490e442 127static inline void pm_runtime_no_callbacks(struct device *dev) {}
c7b61de5 128static inline void pm_runtime_irq_safe(struct device *dev) {}
2f60ba70 129
15bcb91d
AS		 130static inline void pm_runtime_mark_last_busy(struct device *dev) {}
131static inline void __pm_runtime_use_autosuspend(struct device *dev,
132 bool use) {}
133static inline void pm_runtime_set_autosuspend_delay(struct device *dev,
134 int delay) {}
135static inline unsigned long pm_runtime_autosuspend_expiration(
136 struct device *dev) { return 0; }
137
5e928f77
RW		 138#endif /* !CONFIG_PM_RUNTIME */
139
140a6c94
AS		 140static inline int pm_runtime_idle(struct device *dev)
141{
142 return __pm_runtime_idle(dev, 0);
143}
144
145static inline int pm_runtime_suspend(struct device *dev)
146{
147 return __pm_runtime_suspend(dev, 0);
148}
149
15bcb91d
AS		 150static inline int pm_runtime_autosuspend(struct device *dev)
151{
152 return __pm_runtime_suspend(dev, RPM_AUTO);
153}
154
140a6c94
AS		 155static inline int pm_runtime_resume(struct device *dev)
156{
157 return __pm_runtime_resume(dev, 0);
158}
159
160static inline int pm_request_idle(struct device *dev)
161{
162 return __pm_runtime_idle(dev, RPM_ASYNC);
163}
164
165static inline int pm_request_resume(struct device *dev)
166{
167 return __pm_runtime_resume(dev, RPM_ASYNC);
168}
169
5fc62aad
ML		 170static inline int pm_request_autosuspend(struct device *dev)
171{
172 return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO);
173}
174
5e928f77
RW		 175static inline int pm_runtime_get(struct device *dev)
176{
140a6c94 177 return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC);
5e928f77
RW		 178}
179
180static inline int pm_runtime_get_sync(struct device *dev)
181{
140a6c94 182 return __pm_runtime_resume(dev, RPM_GET_PUT);
5e928f77
RW		 183}
184
185static inline int pm_runtime_put(struct device *dev)
186{
140a6c94 187 return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC);
5e928f77
RW		 188}
189
15bcb91d
AS		 190static inline int pm_runtime_put_autosuspend(struct device *dev)
191{
192 return __pm_runtime_suspend(dev,
193 RPM_GET_PUT | RPM_ASYNC | RPM_AUTO);
194}
195
5e928f77
RW		 196static inline int pm_runtime_put_sync(struct device *dev)
197{
140a6c94 198 return __pm_runtime_idle(dev, RPM_GET_PUT);
5e928f77
RW		 199}
200
c7b61de5
AS		 201static inline int pm_runtime_put_sync_suspend(struct device *dev)
202{
203 return __pm_runtime_suspend(dev, RPM_GET_PUT);
204}
205
15bcb91d
AS		 206static inline int pm_runtime_put_sync_autosuspend(struct device *dev)
207{
208 return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO);
209}
210
5e928f77
RW		 211static inline int pm_runtime_set_active(struct device *dev)
212{
213 return __pm_runtime_set_status(dev, RPM_ACTIVE);
214}
215
216static inline void pm_runtime_set_suspended(struct device *dev)
217{
218 __pm_runtime_set_status(dev, RPM_SUSPENDED);
219}
220
221static inline void pm_runtime_disable(struct device *dev)
222{
223 __pm_runtime_disable(dev, true);
224}
225
15bcb91d
AS		 226static inline void pm_runtime_use_autosuspend(struct device *dev)
227{
228 __pm_runtime_use_autosuspend(dev, true);
229}
230
231static inline void pm_runtime_dont_use_autosuspend(struct device *dev)
232{
233 __pm_runtime_use_autosuspend(dev, false);
234}
235
5e928f77 236#endif
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