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Commit | Line | Data |
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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 UH |
26 | #ifdef CONFIG_PM |
27 | extern int pm_generic_runtime_suspend(struct device *dev); | |
28 | extern int pm_generic_runtime_resume(struct device *dev); | |
29 | #else | |
30 | static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } | |
31 | static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } | |
32 | #endif | |
33 | ||
5e928f77 RW |
34 | #ifdef CONFIG_PM_RUNTIME |
35 | ||
36 | extern struct workqueue_struct *pm_wq; | |
37 | ||
140a6c94 AS |
38 | extern int __pm_runtime_idle(struct device *dev, int rpmflags); |
39 | extern int __pm_runtime_suspend(struct device *dev, int rpmflags); | |
40 | extern int __pm_runtime_resume(struct device *dev, int rpmflags); | |
5e928f77 | 41 | extern int pm_schedule_suspend(struct device *dev, unsigned int delay); |
5e928f77 RW |
42 | extern int __pm_runtime_set_status(struct device *dev, unsigned int status); |
43 | extern int pm_runtime_barrier(struct device *dev); | |
44 | extern void pm_runtime_enable(struct device *dev); | |
45 | extern void __pm_runtime_disable(struct device *dev, bool check_resume); | |
53823639 RW |
46 | extern void pm_runtime_allow(struct device *dev); |
47 | extern void pm_runtime_forbid(struct device *dev); | |
7490e442 | 48 | extern void pm_runtime_no_callbacks(struct device *dev); |
c7b61de5 | 49 | extern void pm_runtime_irq_safe(struct device *dev); |
15bcb91d AS |
50 | extern void __pm_runtime_use_autosuspend(struct device *dev, bool use); |
51 | extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); | |
52 | extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev); | |
00dc9ad1 RW |
53 | extern void pm_runtime_update_max_time_suspended(struct device *dev, |
54 | s64 delta_ns); | |
e823407f | 55 | extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable); |
5e928f77 RW |
56 | |
57 | static inline bool pm_children_suspended(struct device *dev) | |
58 | { | |
59 | return dev->power.ignore_children | |
60 | || !atomic_read(&dev->power.child_count); | |
61 | } | |
62 | ||
5e928f77 RW |
63 | static inline void pm_runtime_get_noresume(struct device *dev) |
64 | { | |
65 | atomic_inc(&dev->power.usage_count); | |
66 | } | |
67 | ||
68 | static inline void pm_runtime_put_noidle(struct device *dev) | |
69 | { | |
70 | atomic_add_unless(&dev->power.usage_count, -1, 0); | |
71 | } | |
72 | ||
7a1a8eb5 RW |
73 | static inline bool device_run_wake(struct device *dev) |
74 | { | |
75 | return dev->power.run_wake; | |
76 | } | |
77 | ||
78 | static inline void device_set_run_wake(struct device *dev, bool enable) | |
79 | { | |
80 | dev->power.run_wake = enable; | |
81 | } | |
82 | ||
d690b2cd RW |
83 | static inline bool pm_runtime_suspended(struct device *dev) |
84 | { | |
f08f5a0a RW |
85 | return dev->power.runtime_status == RPM_SUSPENDED |
86 | && !dev->power.disable_depth; | |
d690b2cd RW |
87 | } |
88 | ||
fbadc58d SL |
89 | static inline bool pm_runtime_active(struct device *dev) |
90 | { | |
91 | return dev->power.runtime_status == RPM_ACTIVE | |
92 | || dev->power.disable_depth; | |
93 | } | |
94 | ||
f3393b62 KH |
95 | static inline bool pm_runtime_status_suspended(struct device *dev) |
96 | { | |
97 | return dev->power.runtime_status == RPM_SUSPENDED; | |
98 | } | |
99 | ||
4b31db8a RW |
100 | static inline bool pm_runtime_enabled(struct device *dev) |
101 | { | |
102 | return !dev->power.disable_depth; | |
103 | } | |
104 | ||
cb8f51bd RW |
105 | static inline bool pm_runtime_callbacks_present(struct device *dev) |
106 | { | |
107 | return !dev->power.no_callbacks; | |
108 | } | |
109 | ||
15bcb91d AS |
110 | static inline void pm_runtime_mark_last_busy(struct device *dev) |
111 | { | |
112 | ACCESS_ONCE(dev->power.last_busy) = jiffies; | |
113 | } | |
114 | ||
5e928f77 RW |
115 | #else /* !CONFIG_PM_RUNTIME */ |
116 | ||
140a6c94 AS |
117 | static inline int __pm_runtime_idle(struct device *dev, int rpmflags) |
118 | { | |
119 | return -ENOSYS; | |
120 | } | |
121 | static inline int __pm_runtime_suspend(struct device *dev, int rpmflags) | |
122 | { | |
123 | return -ENOSYS; | |
124 | } | |
125 | static inline int __pm_runtime_resume(struct device *dev, int rpmflags) | |
126 | { | |
127 | return 1; | |
128 | } | |
5e928f77 RW |
129 | static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) |
130 | { | |
131 | return -ENOSYS; | |
132 | } | |
5e928f77 RW |
133 | static inline int __pm_runtime_set_status(struct device *dev, |
134 | unsigned int status) { return 0; } | |
135 | static inline int pm_runtime_barrier(struct device *dev) { return 0; } | |
136 | static inline void pm_runtime_enable(struct device *dev) {} | |
137 | static inline void __pm_runtime_disable(struct device *dev, bool c) {} | |
53823639 RW |
138 | static inline void pm_runtime_allow(struct device *dev) {} |
139 | static inline void pm_runtime_forbid(struct device *dev) {} | |
5e928f77 RW |
140 | |
141 | static inline bool pm_children_suspended(struct device *dev) { return false; } | |
5e928f77 RW |
142 | static inline void pm_runtime_get_noresume(struct device *dev) {} |
143 | static inline void pm_runtime_put_noidle(struct device *dev) {} | |
7a1a8eb5 RW |
144 | static inline bool device_run_wake(struct device *dev) { return false; } |
145 | static inline void device_set_run_wake(struct device *dev, bool enable) {} | |
d690b2cd | 146 | static inline bool pm_runtime_suspended(struct device *dev) { return false; } |
fbadc58d | 147 | static inline bool pm_runtime_active(struct device *dev) { return true; } |
f3393b62 | 148 | static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } |
4b31db8a | 149 | static inline bool pm_runtime_enabled(struct device *dev) { return false; } |
5e928f77 | 150 | |
7490e442 | 151 | static inline void pm_runtime_no_callbacks(struct device *dev) {} |
c7b61de5 | 152 | static inline void pm_runtime_irq_safe(struct device *dev) {} |
2f60ba70 | 153 | |
cb8f51bd | 154 | static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } |
15bcb91d AS |
155 | static inline void pm_runtime_mark_last_busy(struct device *dev) {} |
156 | static inline void __pm_runtime_use_autosuspend(struct device *dev, | |
157 | bool use) {} | |
158 | static inline void pm_runtime_set_autosuspend_delay(struct device *dev, | |
159 | int delay) {} | |
160 | static inline unsigned long pm_runtime_autosuspend_expiration( | |
161 | struct device *dev) { return 0; } | |
e823407f ML |
162 | static inline void pm_runtime_set_memalloc_noio(struct device *dev, |
163 | bool enable){} | |
15bcb91d | 164 | |
5e928f77 RW |
165 | #endif /* !CONFIG_PM_RUNTIME */ |
166 | ||
140a6c94 AS |
167 | static inline int pm_runtime_idle(struct device *dev) |
168 | { | |
169 | return __pm_runtime_idle(dev, 0); | |
170 | } | |
171 | ||
172 | static inline int pm_runtime_suspend(struct device *dev) | |
173 | { | |
174 | return __pm_runtime_suspend(dev, 0); | |
175 | } | |
176 | ||
15bcb91d AS |
177 | static inline int pm_runtime_autosuspend(struct device *dev) |
178 | { | |
179 | return __pm_runtime_suspend(dev, RPM_AUTO); | |
180 | } | |
181 | ||
140a6c94 AS |
182 | static inline int pm_runtime_resume(struct device *dev) |
183 | { | |
184 | return __pm_runtime_resume(dev, 0); | |
185 | } | |
186 | ||
187 | static inline int pm_request_idle(struct device *dev) | |
188 | { | |
189 | return __pm_runtime_idle(dev, RPM_ASYNC); | |
190 | } | |
191 | ||
192 | static inline int pm_request_resume(struct device *dev) | |
193 | { | |
194 | return __pm_runtime_resume(dev, RPM_ASYNC); | |
195 | } | |
196 | ||
5fc62aad ML |
197 | static inline int pm_request_autosuspend(struct device *dev) |
198 | { | |
199 | return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); | |
200 | } | |
201 | ||
5e928f77 RW |
202 | static inline int pm_runtime_get(struct device *dev) |
203 | { | |
140a6c94 | 204 | return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
205 | } |
206 | ||
207 | static inline int pm_runtime_get_sync(struct device *dev) | |
208 | { | |
140a6c94 | 209 | return __pm_runtime_resume(dev, RPM_GET_PUT); |
5e928f77 RW |
210 | } |
211 | ||
212 | static inline int pm_runtime_put(struct device *dev) | |
213 | { | |
140a6c94 | 214 | return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
215 | } |
216 | ||
15bcb91d AS |
217 | static inline int pm_runtime_put_autosuspend(struct device *dev) |
218 | { | |
219 | return __pm_runtime_suspend(dev, | |
220 | RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); | |
221 | } | |
222 | ||
5e928f77 RW |
223 | static inline int pm_runtime_put_sync(struct device *dev) |
224 | { | |
140a6c94 | 225 | return __pm_runtime_idle(dev, RPM_GET_PUT); |
5e928f77 RW |
226 | } |
227 | ||
c7b61de5 AS |
228 | static inline int pm_runtime_put_sync_suspend(struct device *dev) |
229 | { | |
230 | return __pm_runtime_suspend(dev, RPM_GET_PUT); | |
231 | } | |
232 | ||
15bcb91d AS |
233 | static inline int pm_runtime_put_sync_autosuspend(struct device *dev) |
234 | { | |
235 | return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); | |
236 | } | |
237 | ||
5e928f77 RW |
238 | static inline int pm_runtime_set_active(struct device *dev) |
239 | { | |
240 | return __pm_runtime_set_status(dev, RPM_ACTIVE); | |
241 | } | |
242 | ||
243 | static inline void pm_runtime_set_suspended(struct device *dev) | |
244 | { | |
245 | __pm_runtime_set_status(dev, RPM_SUSPENDED); | |
246 | } | |
247 | ||
248 | static inline void pm_runtime_disable(struct device *dev) | |
249 | { | |
250 | __pm_runtime_disable(dev, true); | |
251 | } | |
252 | ||
15bcb91d AS |
253 | static inline void pm_runtime_use_autosuspend(struct device *dev) |
254 | { | |
255 | __pm_runtime_use_autosuspend(dev, true); | |
256 | } | |
257 | ||
258 | static inline void pm_runtime_dont_use_autosuspend(struct device *dev) | |
259 | { | |
260 | __pm_runtime_use_autosuspend(dev, false); | |
261 | } | |
262 | ||
5e928f77 | 263 | #endif |