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); | |
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); |
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, |
56 | s64 delta_ns); | |
e823407f | 57 | extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable); |
5e928f77 RW |
58 | |
59 | static inline bool pm_children_suspended(struct device *dev) | |
60 | { | |
61 | return dev->power.ignore_children | |
62 | || !atomic_read(&dev->power.child_count); | |
63 | } | |
64 | ||
5e928f77 RW |
65 | static inline void pm_runtime_get_noresume(struct device *dev) |
66 | { | |
67 | atomic_inc(&dev->power.usage_count); | |
68 | } | |
69 | ||
70 | static inline void pm_runtime_put_noidle(struct device *dev) | |
71 | { | |
72 | atomic_add_unless(&dev->power.usage_count, -1, 0); | |
73 | } | |
74 | ||
7a1a8eb5 RW |
75 | static inline bool device_run_wake(struct device *dev) |
76 | { | |
77 | return dev->power.run_wake; | |
78 | } | |
79 | ||
80 | static inline void device_set_run_wake(struct device *dev, bool enable) | |
81 | { | |
82 | dev->power.run_wake = enable; | |
83 | } | |
84 | ||
d690b2cd RW |
85 | static inline bool pm_runtime_suspended(struct device *dev) |
86 | { | |
f08f5a0a RW |
87 | return dev->power.runtime_status == RPM_SUSPENDED |
88 | && !dev->power.disable_depth; | |
d690b2cd RW |
89 | } |
90 | ||
fbadc58d SL |
91 | static inline bool pm_runtime_active(struct device *dev) |
92 | { | |
93 | return dev->power.runtime_status == RPM_ACTIVE | |
94 | || dev->power.disable_depth; | |
95 | } | |
96 | ||
f3393b62 KH |
97 | static inline bool pm_runtime_status_suspended(struct device *dev) |
98 | { | |
99 | return dev->power.runtime_status == RPM_SUSPENDED; | |
100 | } | |
101 | ||
4b31db8a RW |
102 | static inline bool pm_runtime_enabled(struct device *dev) |
103 | { | |
104 | return !dev->power.disable_depth; | |
105 | } | |
106 | ||
cb8f51bd RW |
107 | static inline bool pm_runtime_callbacks_present(struct device *dev) |
108 | { | |
109 | return !dev->power.no_callbacks; | |
110 | } | |
111 | ||
15bcb91d AS |
112 | static inline void pm_runtime_mark_last_busy(struct device *dev) |
113 | { | |
114 | ACCESS_ONCE(dev->power.last_busy) = jiffies; | |
115 | } | |
116 | ||
3fb1581e KK |
117 | static inline bool pm_runtime_is_irq_safe(struct device *dev) |
118 | { | |
119 | return dev->power.irq_safe; | |
120 | } | |
121 | ||
d30d819d RW |
122 | #else /* !CONFIG_PM */ |
123 | ||
124 | static inline bool queue_pm_work(struct work_struct *work) { return false; } | |
125 | ||
126 | static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } | |
127 | static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } | |
128 | static inline int pm_runtime_force_suspend(struct device *dev) { return 0; } | |
129 | static inline int pm_runtime_force_resume(struct device *dev) { return 0; } | |
5e928f77 | 130 | |
140a6c94 AS |
131 | static inline int __pm_runtime_idle(struct device *dev, int rpmflags) |
132 | { | |
133 | return -ENOSYS; | |
134 | } | |
135 | static inline int __pm_runtime_suspend(struct device *dev, int rpmflags) | |
136 | { | |
137 | return -ENOSYS; | |
138 | } | |
139 | static inline int __pm_runtime_resume(struct device *dev, int rpmflags) | |
140 | { | |
141 | return 1; | |
142 | } | |
5e928f77 RW |
143 | static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) |
144 | { | |
145 | return -ENOSYS; | |
146 | } | |
a436b6a1 RW |
147 | static inline int pm_runtime_get_if_in_use(struct device *dev) |
148 | { | |
149 | return -EINVAL; | |
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; } |
4b31db8a | 167 | static inline bool pm_runtime_enabled(struct device *dev) { return false; } |
5e928f77 | 168 | |
7490e442 | 169 | static inline void pm_runtime_no_callbacks(struct device *dev) {} |
c7b61de5 | 170 | static inline void pm_runtime_irq_safe(struct device *dev) {} |
3fb1581e | 171 | static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; } |
2f60ba70 | 172 | |
cb8f51bd | 173 | static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } |
15bcb91d AS |
174 | static inline void pm_runtime_mark_last_busy(struct device *dev) {} |
175 | static inline void __pm_runtime_use_autosuspend(struct device *dev, | |
176 | bool use) {} | |
177 | static inline void pm_runtime_set_autosuspend_delay(struct device *dev, | |
178 | int delay) {} | |
179 | static inline unsigned long pm_runtime_autosuspend_expiration( | |
180 | struct device *dev) { return 0; } | |
e823407f ML |
181 | static inline void pm_runtime_set_memalloc_noio(struct device *dev, |
182 | bool enable){} | |
15bcb91d | 183 | |
d30d819d | 184 | #endif /* !CONFIG_PM */ |
5e928f77 | 185 | |
140a6c94 AS |
186 | static inline int pm_runtime_idle(struct device *dev) |
187 | { | |
188 | return __pm_runtime_idle(dev, 0); | |
189 | } | |
190 | ||
191 | static inline int pm_runtime_suspend(struct device *dev) | |
192 | { | |
193 | return __pm_runtime_suspend(dev, 0); | |
194 | } | |
195 | ||
15bcb91d AS |
196 | static inline int pm_runtime_autosuspend(struct device *dev) |
197 | { | |
198 | return __pm_runtime_suspend(dev, RPM_AUTO); | |
199 | } | |
200 | ||
140a6c94 AS |
201 | static inline int pm_runtime_resume(struct device *dev) |
202 | { | |
203 | return __pm_runtime_resume(dev, 0); | |
204 | } | |
205 | ||
206 | static inline int pm_request_idle(struct device *dev) | |
207 | { | |
208 | return __pm_runtime_idle(dev, RPM_ASYNC); | |
209 | } | |
210 | ||
211 | static inline int pm_request_resume(struct device *dev) | |
212 | { | |
213 | return __pm_runtime_resume(dev, RPM_ASYNC); | |
214 | } | |
215 | ||
5fc62aad ML |
216 | static inline int pm_request_autosuspend(struct device *dev) |
217 | { | |
218 | return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); | |
219 | } | |
220 | ||
5e928f77 RW |
221 | static inline int pm_runtime_get(struct device *dev) |
222 | { | |
140a6c94 | 223 | return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
224 | } |
225 | ||
226 | static inline int pm_runtime_get_sync(struct device *dev) | |
227 | { | |
140a6c94 | 228 | return __pm_runtime_resume(dev, RPM_GET_PUT); |
5e928f77 RW |
229 | } |
230 | ||
231 | static inline int pm_runtime_put(struct device *dev) | |
232 | { | |
140a6c94 | 233 | return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
234 | } |
235 | ||
15bcb91d AS |
236 | static inline int pm_runtime_put_autosuspend(struct device *dev) |
237 | { | |
238 | return __pm_runtime_suspend(dev, | |
239 | RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); | |
240 | } | |
241 | ||
5e928f77 RW |
242 | static inline int pm_runtime_put_sync(struct device *dev) |
243 | { | |
140a6c94 | 244 | return __pm_runtime_idle(dev, RPM_GET_PUT); |
5e928f77 RW |
245 | } |
246 | ||
c7b61de5 AS |
247 | static inline int pm_runtime_put_sync_suspend(struct device *dev) |
248 | { | |
249 | return __pm_runtime_suspend(dev, RPM_GET_PUT); | |
250 | } | |
251 | ||
15bcb91d AS |
252 | static inline int pm_runtime_put_sync_autosuspend(struct device *dev) |
253 | { | |
254 | return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); | |
255 | } | |
256 | ||
5e928f77 RW |
257 | static inline int pm_runtime_set_active(struct device *dev) |
258 | { | |
259 | return __pm_runtime_set_status(dev, RPM_ACTIVE); | |
260 | } | |
261 | ||
262 | static inline void pm_runtime_set_suspended(struct device *dev) | |
263 | { | |
264 | __pm_runtime_set_status(dev, RPM_SUSPENDED); | |
265 | } | |
266 | ||
267 | static inline void pm_runtime_disable(struct device *dev) | |
268 | { | |
269 | __pm_runtime_disable(dev, true); | |
270 | } | |
271 | ||
15bcb91d AS |
272 | static inline void pm_runtime_use_autosuspend(struct device *dev) |
273 | { | |
274 | __pm_runtime_use_autosuspend(dev, true); | |
275 | } | |
276 | ||
277 | static inline void pm_runtime_dont_use_autosuspend(struct device *dev) | |
278 | { | |
279 | __pm_runtime_use_autosuspend(dev, false); | |
280 | } | |
281 | ||
5e928f77 | 282 | #endif |