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