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> |
15 | ||
15bcb91d AS |
16 | #include <linux/jiffies.h> |
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 |
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); |
35 | extern int pm_generic_runtime_resume(struct device *dev); | |
37f20416 UH |
36 | extern int pm_runtime_force_suspend(struct device *dev); |
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); | |
5e928f77 | 42 | extern int pm_schedule_suspend(struct device *dev, unsigned int delay); |
5e928f77 RW |
43 | extern int __pm_runtime_set_status(struct device *dev, unsigned int status); |
44 | extern int pm_runtime_barrier(struct device *dev); | |
45 | extern void pm_runtime_enable(struct device *dev); | |
46 | extern void __pm_runtime_disable(struct device *dev, bool check_resume); | |
53823639 RW |
47 | extern void pm_runtime_allow(struct device *dev); |
48 | extern void pm_runtime_forbid(struct device *dev); | |
7490e442 | 49 | extern void pm_runtime_no_callbacks(struct device *dev); |
c7b61de5 | 50 | extern void pm_runtime_irq_safe(struct device *dev); |
15bcb91d AS |
51 | extern void __pm_runtime_use_autosuspend(struct device *dev, bool use); |
52 | extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); | |
53 | extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev); | |
00dc9ad1 RW |
54 | extern void pm_runtime_update_max_time_suspended(struct device *dev, |
55 | s64 delta_ns); | |
e823407f | 56 | extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable); |
5e928f77 RW |
57 | |
58 | static inline bool pm_children_suspended(struct device *dev) | |
59 | { | |
60 | return dev->power.ignore_children | |
61 | || !atomic_read(&dev->power.child_count); | |
62 | } | |
63 | ||
5e928f77 RW |
64 | static inline void pm_runtime_get_noresume(struct device *dev) |
65 | { | |
66 | atomic_inc(&dev->power.usage_count); | |
67 | } | |
68 | ||
69 | static inline void pm_runtime_put_noidle(struct device *dev) | |
70 | { | |
71 | atomic_add_unless(&dev->power.usage_count, -1, 0); | |
72 | } | |
73 | ||
7a1a8eb5 RW |
74 | static inline bool device_run_wake(struct device *dev) |
75 | { | |
76 | return dev->power.run_wake; | |
77 | } | |
78 | ||
79 | static inline void device_set_run_wake(struct device *dev, bool enable) | |
80 | { | |
81 | dev->power.run_wake = enable; | |
82 | } | |
83 | ||
d690b2cd RW |
84 | static inline bool pm_runtime_suspended(struct device *dev) |
85 | { | |
f08f5a0a RW |
86 | return dev->power.runtime_status == RPM_SUSPENDED |
87 | && !dev->power.disable_depth; | |
d690b2cd RW |
88 | } |
89 | ||
fbadc58d SL |
90 | static inline bool pm_runtime_active(struct device *dev) |
91 | { | |
92 | return dev->power.runtime_status == RPM_ACTIVE | |
93 | || dev->power.disable_depth; | |
94 | } | |
95 | ||
f3393b62 KH |
96 | static inline bool pm_runtime_status_suspended(struct device *dev) |
97 | { | |
98 | return dev->power.runtime_status == RPM_SUSPENDED; | |
99 | } | |
100 | ||
aae4518b RW |
101 | static inline bool pm_runtime_suspended_if_enabled(struct device *dev) |
102 | { | |
103 | return pm_runtime_status_suspended(dev) && dev->power.disable_depth == 1; | |
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 | } | |
5e928f77 RW |
151 | static inline int __pm_runtime_set_status(struct device *dev, |
152 | unsigned int status) { return 0; } | |
153 | static inline int pm_runtime_barrier(struct device *dev) { return 0; } | |
154 | static inline void pm_runtime_enable(struct device *dev) {} | |
155 | static inline void __pm_runtime_disable(struct device *dev, bool c) {} | |
53823639 RW |
156 | static inline void pm_runtime_allow(struct device *dev) {} |
157 | static inline void pm_runtime_forbid(struct device *dev) {} | |
5e928f77 RW |
158 | |
159 | static inline bool pm_children_suspended(struct device *dev) { return false; } | |
5e928f77 RW |
160 | static inline void pm_runtime_get_noresume(struct device *dev) {} |
161 | static inline void pm_runtime_put_noidle(struct device *dev) {} | |
7a1a8eb5 RW |
162 | static inline bool device_run_wake(struct device *dev) { return false; } |
163 | static inline void device_set_run_wake(struct device *dev, bool enable) {} | |
d690b2cd | 164 | static inline bool pm_runtime_suspended(struct device *dev) { return false; } |
fbadc58d | 165 | static inline bool pm_runtime_active(struct device *dev) { return true; } |
f3393b62 | 166 | static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } |
aae4518b | 167 | static inline bool pm_runtime_suspended_if_enabled(struct device *dev) { return false; } |
4b31db8a | 168 | static inline bool pm_runtime_enabled(struct device *dev) { return false; } |
5e928f77 | 169 | |
7490e442 | 170 | static inline void pm_runtime_no_callbacks(struct device *dev) {} |
c7b61de5 | 171 | static inline void pm_runtime_irq_safe(struct device *dev) {} |
3fb1581e | 172 | static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; } |
2f60ba70 | 173 | |
cb8f51bd | 174 | static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } |
15bcb91d AS |
175 | static inline void pm_runtime_mark_last_busy(struct device *dev) {} |
176 | static inline void __pm_runtime_use_autosuspend(struct device *dev, | |
177 | bool use) {} | |
178 | static inline void pm_runtime_set_autosuspend_delay(struct device *dev, | |
179 | int delay) {} | |
180 | static inline unsigned long pm_runtime_autosuspend_expiration( | |
181 | struct device *dev) { return 0; } | |
e823407f ML |
182 | static inline void pm_runtime_set_memalloc_noio(struct device *dev, |
183 | bool enable){} | |
15bcb91d | 184 | |
d30d819d | 185 | #endif /* !CONFIG_PM */ |
5e928f77 | 186 | |
140a6c94 AS |
187 | static inline int pm_runtime_idle(struct device *dev) |
188 | { | |
189 | return __pm_runtime_idle(dev, 0); | |
190 | } | |
191 | ||
192 | static inline int pm_runtime_suspend(struct device *dev) | |
193 | { | |
194 | return __pm_runtime_suspend(dev, 0); | |
195 | } | |
196 | ||
15bcb91d AS |
197 | static inline int pm_runtime_autosuspend(struct device *dev) |
198 | { | |
199 | return __pm_runtime_suspend(dev, RPM_AUTO); | |
200 | } | |
201 | ||
140a6c94 AS |
202 | static inline int pm_runtime_resume(struct device *dev) |
203 | { | |
204 | return __pm_runtime_resume(dev, 0); | |
205 | } | |
206 | ||
207 | static inline int pm_request_idle(struct device *dev) | |
208 | { | |
209 | return __pm_runtime_idle(dev, RPM_ASYNC); | |
210 | } | |
211 | ||
212 | static inline int pm_request_resume(struct device *dev) | |
213 | { | |
214 | return __pm_runtime_resume(dev, RPM_ASYNC); | |
215 | } | |
216 | ||
5fc62aad ML |
217 | static inline int pm_request_autosuspend(struct device *dev) |
218 | { | |
219 | return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); | |
220 | } | |
221 | ||
5e928f77 RW |
222 | static inline int pm_runtime_get(struct device *dev) |
223 | { | |
140a6c94 | 224 | return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
225 | } |
226 | ||
227 | static inline int pm_runtime_get_sync(struct device *dev) | |
228 | { | |
140a6c94 | 229 | return __pm_runtime_resume(dev, RPM_GET_PUT); |
5e928f77 RW |
230 | } |
231 | ||
232 | static inline int pm_runtime_put(struct device *dev) | |
233 | { | |
140a6c94 | 234 | return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
235 | } |
236 | ||
15bcb91d AS |
237 | static inline int pm_runtime_put_autosuspend(struct device *dev) |
238 | { | |
239 | return __pm_runtime_suspend(dev, | |
240 | RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); | |
241 | } | |
242 | ||
5e928f77 RW |
243 | static inline int pm_runtime_put_sync(struct device *dev) |
244 | { | |
140a6c94 | 245 | return __pm_runtime_idle(dev, RPM_GET_PUT); |
5e928f77 RW |
246 | } |
247 | ||
c7b61de5 AS |
248 | static inline int pm_runtime_put_sync_suspend(struct device *dev) |
249 | { | |
250 | return __pm_runtime_suspend(dev, RPM_GET_PUT); | |
251 | } | |
252 | ||
15bcb91d AS |
253 | static inline int pm_runtime_put_sync_autosuspend(struct device *dev) |
254 | { | |
255 | return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); | |
256 | } | |
257 | ||
5e928f77 RW |
258 | static inline int pm_runtime_set_active(struct device *dev) |
259 | { | |
260 | return __pm_runtime_set_status(dev, RPM_ACTIVE); | |
261 | } | |
262 | ||
263 | static inline void pm_runtime_set_suspended(struct device *dev) | |
264 | { | |
265 | __pm_runtime_set_status(dev, RPM_SUSPENDED); | |
266 | } | |
267 | ||
268 | static inline void pm_runtime_disable(struct device *dev) | |
269 | { | |
270 | __pm_runtime_disable(dev, true); | |
271 | } | |
272 | ||
15bcb91d AS |
273 | static inline void pm_runtime_use_autosuspend(struct device *dev) |
274 | { | |
275 | __pm_runtime_use_autosuspend(dev, true); | |
276 | } | |
277 | ||
278 | static inline void pm_runtime_dont_use_autosuspend(struct device *dev) | |
279 | { | |
280 | __pm_runtime_use_autosuspend(dev, false); | |
281 | } | |
282 | ||
5e928f77 | 283 | #endif |