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> | |
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 | ||
27 | extern struct workqueue_struct *pm_wq; | |
28 | ||
140a6c94 AS |
29 | extern int __pm_runtime_idle(struct device *dev, int rpmflags); |
30 | extern int __pm_runtime_suspend(struct device *dev, int rpmflags); | |
31 | extern int __pm_runtime_resume(struct device *dev, int rpmflags); | |
5e928f77 | 32 | extern int pm_schedule_suspend(struct device *dev, unsigned int delay); |
5e928f77 RW |
33 | extern int __pm_runtime_set_status(struct device *dev, unsigned int status); |
34 | extern int pm_runtime_barrier(struct device *dev); | |
35 | extern void pm_runtime_enable(struct device *dev); | |
36 | extern void __pm_runtime_disable(struct device *dev, bool check_resume); | |
53823639 RW |
37 | extern void pm_runtime_allow(struct device *dev); |
38 | extern void pm_runtime_forbid(struct device *dev); | |
2f60ba70 RW |
39 | extern int pm_generic_runtime_idle(struct device *dev); |
40 | extern int pm_generic_runtime_suspend(struct device *dev); | |
41 | extern int pm_generic_runtime_resume(struct device *dev); | |
7490e442 | 42 | extern void pm_runtime_no_callbacks(struct device *dev); |
c7b61de5 | 43 | extern void pm_runtime_irq_safe(struct device *dev); |
15bcb91d AS |
44 | extern void __pm_runtime_use_autosuspend(struct device *dev, bool use); |
45 | extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); | |
46 | extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev); | |
5e928f77 RW |
47 | |
48 | static inline bool pm_children_suspended(struct device *dev) | |
49 | { | |
50 | return dev->power.ignore_children | |
51 | || !atomic_read(&dev->power.child_count); | |
52 | } | |
53 | ||
54 | static inline void pm_suspend_ignore_children(struct device *dev, bool enable) | |
55 | { | |
56 | dev->power.ignore_children = enable; | |
57 | } | |
58 | ||
59 | static inline void pm_runtime_get_noresume(struct device *dev) | |
60 | { | |
61 | atomic_inc(&dev->power.usage_count); | |
62 | } | |
63 | ||
64 | static inline void pm_runtime_put_noidle(struct device *dev) | |
65 | { | |
66 | atomic_add_unless(&dev->power.usage_count, -1, 0); | |
67 | } | |
68 | ||
7a1a8eb5 RW |
69 | static inline bool device_run_wake(struct device *dev) |
70 | { | |
71 | return dev->power.run_wake; | |
72 | } | |
73 | ||
74 | static inline void device_set_run_wake(struct device *dev, bool enable) | |
75 | { | |
76 | dev->power.run_wake = enable; | |
77 | } | |
78 | ||
d690b2cd RW |
79 | static 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 | ||
4b31db8a RW |
85 | static inline bool pm_runtime_enabled(struct device *dev) |
86 | { | |
87 | return !dev->power.disable_depth; | |
88 | } | |
89 | ||
cb8f51bd RW |
90 | static inline bool pm_runtime_callbacks_present(struct device *dev) |
91 | { | |
92 | return !dev->power.no_callbacks; | |
93 | } | |
94 | ||
15bcb91d AS |
95 | static inline void pm_runtime_mark_last_busy(struct device *dev) |
96 | { | |
97 | ACCESS_ONCE(dev->power.last_busy) = jiffies; | |
98 | } | |
99 | ||
5e928f77 RW |
100 | #else /* !CONFIG_PM_RUNTIME */ |
101 | ||
140a6c94 AS |
102 | static inline int __pm_runtime_idle(struct device *dev, int rpmflags) |
103 | { | |
104 | return -ENOSYS; | |
105 | } | |
106 | static inline int __pm_runtime_suspend(struct device *dev, int rpmflags) | |
107 | { | |
108 | return -ENOSYS; | |
109 | } | |
110 | static inline int __pm_runtime_resume(struct device *dev, int rpmflags) | |
111 | { | |
112 | return 1; | |
113 | } | |
5e928f77 RW |
114 | static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) |
115 | { | |
116 | return -ENOSYS; | |
117 | } | |
5e928f77 RW |
118 | static inline int __pm_runtime_set_status(struct device *dev, |
119 | unsigned int status) { return 0; } | |
120 | static inline int pm_runtime_barrier(struct device *dev) { return 0; } | |
121 | static inline void pm_runtime_enable(struct device *dev) {} | |
122 | static inline void __pm_runtime_disable(struct device *dev, bool c) {} | |
53823639 RW |
123 | static inline void pm_runtime_allow(struct device *dev) {} |
124 | static inline void pm_runtime_forbid(struct device *dev) {} | |
5e928f77 RW |
125 | |
126 | static inline bool pm_children_suspended(struct device *dev) { return false; } | |
127 | static inline void pm_suspend_ignore_children(struct device *dev, bool en) {} | |
128 | static inline void pm_runtime_get_noresume(struct device *dev) {} | |
129 | static inline void pm_runtime_put_noidle(struct device *dev) {} | |
7a1a8eb5 RW |
130 | static inline bool device_run_wake(struct device *dev) { return false; } |
131 | static inline void device_set_run_wake(struct device *dev, bool enable) {} | |
d690b2cd | 132 | static inline bool pm_runtime_suspended(struct device *dev) { return false; } |
4b31db8a | 133 | static inline bool pm_runtime_enabled(struct device *dev) { return false; } |
5e928f77 | 134 | |
2f60ba70 RW |
135 | static inline int pm_generic_runtime_idle(struct device *dev) { return 0; } |
136 | static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; } | |
137 | static inline int pm_generic_runtime_resume(struct device *dev) { return 0; } | |
7490e442 | 138 | static inline void pm_runtime_no_callbacks(struct device *dev) {} |
c7b61de5 | 139 | static inline void pm_runtime_irq_safe(struct device *dev) {} |
2f60ba70 | 140 | |
cb8f51bd | 141 | static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } |
15bcb91d AS |
142 | static inline void pm_runtime_mark_last_busy(struct device *dev) {} |
143 | static inline void __pm_runtime_use_autosuspend(struct device *dev, | |
144 | bool use) {} | |
145 | static inline void pm_runtime_set_autosuspend_delay(struct device *dev, | |
146 | int delay) {} | |
147 | static inline unsigned long pm_runtime_autosuspend_expiration( | |
148 | struct device *dev) { return 0; } | |
149 | ||
5e928f77 RW |
150 | #endif /* !CONFIG_PM_RUNTIME */ |
151 | ||
140a6c94 AS |
152 | static inline int pm_runtime_idle(struct device *dev) |
153 | { | |
154 | return __pm_runtime_idle(dev, 0); | |
155 | } | |
156 | ||
157 | static inline int pm_runtime_suspend(struct device *dev) | |
158 | { | |
159 | return __pm_runtime_suspend(dev, 0); | |
160 | } | |
161 | ||
15bcb91d AS |
162 | static inline int pm_runtime_autosuspend(struct device *dev) |
163 | { | |
164 | return __pm_runtime_suspend(dev, RPM_AUTO); | |
165 | } | |
166 | ||
140a6c94 AS |
167 | static inline int pm_runtime_resume(struct device *dev) |
168 | { | |
169 | return __pm_runtime_resume(dev, 0); | |
170 | } | |
171 | ||
172 | static inline int pm_request_idle(struct device *dev) | |
173 | { | |
174 | return __pm_runtime_idle(dev, RPM_ASYNC); | |
175 | } | |
176 | ||
177 | static inline int pm_request_resume(struct device *dev) | |
178 | { | |
179 | return __pm_runtime_resume(dev, RPM_ASYNC); | |
180 | } | |
181 | ||
5fc62aad ML |
182 | static inline int pm_request_autosuspend(struct device *dev) |
183 | { | |
184 | return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); | |
185 | } | |
186 | ||
5e928f77 RW |
187 | static inline int pm_runtime_get(struct device *dev) |
188 | { | |
140a6c94 | 189 | return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
190 | } |
191 | ||
192 | static inline int pm_runtime_get_sync(struct device *dev) | |
193 | { | |
140a6c94 | 194 | return __pm_runtime_resume(dev, RPM_GET_PUT); |
5e928f77 RW |
195 | } |
196 | ||
197 | static inline int pm_runtime_put(struct device *dev) | |
198 | { | |
140a6c94 | 199 | return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); |
5e928f77 RW |
200 | } |
201 | ||
15bcb91d AS |
202 | static inline int pm_runtime_put_autosuspend(struct device *dev) |
203 | { | |
204 | return __pm_runtime_suspend(dev, | |
205 | RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); | |
206 | } | |
207 | ||
5e928f77 RW |
208 | static inline int pm_runtime_put_sync(struct device *dev) |
209 | { | |
140a6c94 | 210 | return __pm_runtime_idle(dev, RPM_GET_PUT); |
5e928f77 RW |
211 | } |
212 | ||
c7b61de5 AS |
213 | static inline int pm_runtime_put_sync_suspend(struct device *dev) |
214 | { | |
215 | return __pm_runtime_suspend(dev, RPM_GET_PUT); | |
216 | } | |
217 | ||
15bcb91d AS |
218 | static inline int pm_runtime_put_sync_autosuspend(struct device *dev) |
219 | { | |
220 | return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); | |
221 | } | |
222 | ||
5e928f77 RW |
223 | static inline int pm_runtime_set_active(struct device *dev) |
224 | { | |
225 | return __pm_runtime_set_status(dev, RPM_ACTIVE); | |
226 | } | |
227 | ||
228 | static inline void pm_runtime_set_suspended(struct device *dev) | |
229 | { | |
230 | __pm_runtime_set_status(dev, RPM_SUSPENDED); | |
231 | } | |
232 | ||
233 | static inline void pm_runtime_disable(struct device *dev) | |
234 | { | |
235 | __pm_runtime_disable(dev, true); | |
236 | } | |
237 | ||
15bcb91d AS |
238 | static inline void pm_runtime_use_autosuspend(struct device *dev) |
239 | { | |
240 | __pm_runtime_use_autosuspend(dev, true); | |
241 | } | |
242 | ||
243 | static inline void pm_runtime_dont_use_autosuspend(struct device *dev) | |
244 | { | |
245 | __pm_runtime_use_autosuspend(dev, false); | |
246 | } | |
247 | ||
85eb8c8d RW |
248 | struct pm_clk_notifier_block { |
249 | struct notifier_block nb; | |
250 | struct dev_power_domain *pwr_domain; | |
251 | char *con_ids[]; | |
252 | }; | |
253 | ||
254 | #ifdef CONFIG_PM_RUNTIME_CLK | |
255 | extern int pm_runtime_clk_init(struct device *dev); | |
256 | extern void pm_runtime_clk_destroy(struct device *dev); | |
257 | extern int pm_runtime_clk_add(struct device *dev, const char *con_id); | |
258 | extern void pm_runtime_clk_remove(struct device *dev, const char *con_id); | |
259 | extern int pm_runtime_clk_suspend(struct device *dev); | |
260 | extern int pm_runtime_clk_resume(struct device *dev); | |
261 | #else | |
262 | static inline int pm_runtime_clk_init(struct device *dev) | |
263 | { | |
264 | return -EINVAL; | |
265 | } | |
266 | static inline void pm_runtime_clk_destroy(struct device *dev) | |
267 | { | |
268 | } | |
269 | static inline int pm_runtime_clk_add(struct device *dev, const char *con_id) | |
270 | { | |
271 | return -EINVAL; | |
272 | } | |
273 | static inline void pm_runtime_clk_remove(struct device *dev, const char *con_id) | |
274 | { | |
275 | } | |
276 | #define pm_runtime_clock_suspend NULL | |
277 | #define pm_runtime_clock_resume NULL | |
278 | #endif | |
279 | ||
280 | #ifdef CONFIG_HAVE_CLK | |
281 | extern void pm_runtime_clk_add_notifier(struct bus_type *bus, | |
282 | struct pm_clk_notifier_block *clknb); | |
283 | #else | |
284 | static inline void pm_runtime_clk_add_notifier(struct bus_type *bus, | |
285 | struct pm_clk_notifier_block *clknb) | |
286 | { | |
287 | } | |
288 | #endif | |
289 | ||
5e928f77 | 290 | #endif |