root/include/linux/pm_runtime.h

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INCLUDED FROM

DEFINITIONS

This source file includes following definitions.
  1. queue_pm_work
  2. pm_suspend_ignore_children
  3. pm_runtime_get_noresume
  4. pm_runtime_put_noidle
  5. pm_runtime_suspended
  6. pm_runtime_active
  7. pm_runtime_status_suspended
  8. pm_runtime_enabled
  9. pm_runtime_callbacks_present
  10. pm_runtime_mark_last_busy
  11. pm_runtime_is_irq_safe
  12. queue_pm_work
  13. pm_generic_runtime_suspend
  14. pm_generic_runtime_resume
  15. pm_runtime_force_suspend
  16. pm_runtime_force_resume
  17. __pm_runtime_idle
  18. __pm_runtime_suspend
  19. __pm_runtime_resume
  20. pm_schedule_suspend
  21. pm_runtime_get_if_in_use
  22. __pm_runtime_set_status
  23. pm_runtime_barrier
  24. pm_runtime_enable
  25. __pm_runtime_disable
  26. pm_runtime_allow
  27. pm_runtime_forbid
  28. pm_suspend_ignore_children
  29. pm_runtime_get_noresume
  30. pm_runtime_put_noidle
  31. pm_runtime_suspended
  32. pm_runtime_active
  33. pm_runtime_status_suspended
  34. pm_runtime_enabled
  35. pm_runtime_no_callbacks
  36. pm_runtime_irq_safe
  37. pm_runtime_is_irq_safe
  38. pm_runtime_callbacks_present
  39. pm_runtime_mark_last_busy
  40. __pm_runtime_use_autosuspend
  41. pm_runtime_set_autosuspend_delay
  42. pm_runtime_autosuspend_expiration
  43. pm_runtime_set_memalloc_noio
  44. pm_runtime_clean_up_links
  45. pm_runtime_get_suppliers
  46. pm_runtime_put_suppliers
  47. pm_runtime_new_link
  48. pm_runtime_drop_link
  49. pm_runtime_idle
  50. pm_runtime_suspend
  51. pm_runtime_autosuspend
  52. pm_runtime_resume
  53. pm_request_idle
  54. pm_request_resume
  55. pm_request_autosuspend
  56. pm_runtime_get
  57. pm_runtime_get_sync
  58. pm_runtime_put
  59. pm_runtime_put_autosuspend
  60. pm_runtime_put_sync
  61. pm_runtime_put_sync_suspend
  62. pm_runtime_put_sync_autosuspend
  63. pm_runtime_set_active
  64. pm_runtime_set_suspended
  65. pm_runtime_disable
  66. pm_runtime_use_autosuspend
  67. pm_runtime_dont_use_autosuspend
   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * pm_runtime.h - Device run-time power management helper functions.
   4  *
   5  * Copyright (C) 2009 Rafael J. Wysocki <rjw@sisk.pl>
   6  */
   7 
   8 #ifndef _LINUX_PM_RUNTIME_H
   9 #define _LINUX_PM_RUNTIME_H
  10 
  11 #include <linux/device.h>
  12 #include <linux/notifier.h>
  13 #include <linux/pm.h>
  14 
  15 #include <linux/jiffies.h>
  16 
  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 */
  21 #define RPM_GET_PUT             0x04    /* Increment/decrement the
  22                                             usage_count */
  23 #define RPM_AUTO                0x08    /* Use autosuspend_delay */
  24 
  25 #ifdef CONFIG_PM
  26 extern struct workqueue_struct *pm_wq;
  27 
  28 static inline bool queue_pm_work(struct work_struct *work)
  29 {
  30         return queue_work(pm_wq, work);
  31 }
  32 
  33 extern int pm_generic_runtime_suspend(struct device *dev);
  34 extern int pm_generic_runtime_resume(struct device *dev);
  35 extern int pm_runtime_force_suspend(struct device *dev);
  36 extern int pm_runtime_force_resume(struct device *dev);
  37 
  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);
  41 extern int pm_runtime_get_if_in_use(struct device *dev);
  42 extern int pm_schedule_suspend(struct device *dev, unsigned int delay);
  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);
  47 extern void pm_runtime_allow(struct device *dev);
  48 extern void pm_runtime_forbid(struct device *dev);
  49 extern void pm_runtime_no_callbacks(struct device *dev);
  50 extern void pm_runtime_irq_safe(struct device *dev);
  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 u64 pm_runtime_autosuspend_expiration(struct device *dev);
  54 extern void pm_runtime_update_max_time_suspended(struct device *dev,
  55                                                  s64 delta_ns);
  56 extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable);
  57 extern void pm_runtime_clean_up_links(struct device *dev);
  58 extern void pm_runtime_get_suppliers(struct device *dev);
  59 extern void pm_runtime_put_suppliers(struct device *dev);
  60 extern void pm_runtime_new_link(struct device *dev);
  61 extern void pm_runtime_drop_link(struct device *dev);
  62 
  63 static inline void pm_suspend_ignore_children(struct device *dev, bool enable)
  64 {
  65         dev->power.ignore_children = enable;
  66 }
  67 
  68 static inline void pm_runtime_get_noresume(struct device *dev)
  69 {
  70         atomic_inc(&dev->power.usage_count);
  71 }
  72 
  73 static inline void pm_runtime_put_noidle(struct device *dev)
  74 {
  75         atomic_add_unless(&dev->power.usage_count, -1, 0);
  76 }
  77 
  78 static inline bool pm_runtime_suspended(struct device *dev)
  79 {
  80         return dev->power.runtime_status == RPM_SUSPENDED
  81                 && !dev->power.disable_depth;
  82 }
  83 
  84 static inline bool pm_runtime_active(struct device *dev)
  85 {
  86         return dev->power.runtime_status == RPM_ACTIVE
  87                 || dev->power.disable_depth;
  88 }
  89 
  90 static inline bool pm_runtime_status_suspended(struct device *dev)
  91 {
  92         return dev->power.runtime_status == RPM_SUSPENDED;
  93 }
  94 
  95 static inline bool pm_runtime_enabled(struct device *dev)
  96 {
  97         return !dev->power.disable_depth;
  98 }
  99 
 100 static inline bool pm_runtime_callbacks_present(struct device *dev)
 101 {
 102         return !dev->power.no_callbacks;
 103 }
 104 
 105 static inline void pm_runtime_mark_last_busy(struct device *dev)
 106 {
 107         WRITE_ONCE(dev->power.last_busy, ktime_get_mono_fast_ns());
 108 }
 109 
 110 static inline bool pm_runtime_is_irq_safe(struct device *dev)
 111 {
 112         return dev->power.irq_safe;
 113 }
 114 
 115 extern u64 pm_runtime_suspended_time(struct device *dev);
 116 
 117 #else /* !CONFIG_PM */
 118 
 119 static inline bool queue_pm_work(struct work_struct *work) { return false; }
 120 
 121 static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
 122 static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
 123 static inline int pm_runtime_force_suspend(struct device *dev) { return 0; }
 124 static inline int pm_runtime_force_resume(struct device *dev) { return 0; }
 125 
 126 static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
 127 {
 128         return -ENOSYS;
 129 }
 130 static inline int __pm_runtime_suspend(struct device *dev, int rpmflags)
 131 {
 132         return -ENOSYS;
 133 }
 134 static inline int __pm_runtime_resume(struct device *dev, int rpmflags)
 135 {
 136         return 1;
 137 }
 138 static inline int pm_schedule_suspend(struct device *dev, unsigned int delay)
 139 {
 140         return -ENOSYS;
 141 }
 142 static inline int pm_runtime_get_if_in_use(struct device *dev)
 143 {
 144         return -EINVAL;
 145 }
 146 static inline int __pm_runtime_set_status(struct device *dev,
 147                                             unsigned int status) { return 0; }
 148 static inline int pm_runtime_barrier(struct device *dev) { return 0; }
 149 static inline void pm_runtime_enable(struct device *dev) {}
 150 static inline void __pm_runtime_disable(struct device *dev, bool c) {}
 151 static inline void pm_runtime_allow(struct device *dev) {}
 152 static inline void pm_runtime_forbid(struct device *dev) {}
 153 
 154 static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {}
 155 static inline void pm_runtime_get_noresume(struct device *dev) {}
 156 static inline void pm_runtime_put_noidle(struct device *dev) {}
 157 static inline bool pm_runtime_suspended(struct device *dev) { return false; }
 158 static inline bool pm_runtime_active(struct device *dev) { return true; }
 159 static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }
 160 static inline bool pm_runtime_enabled(struct device *dev) { return false; }
 161 
 162 static inline void pm_runtime_no_callbacks(struct device *dev) {}
 163 static inline void pm_runtime_irq_safe(struct device *dev) {}
 164 static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; }
 165 
 166 static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; }
 167 static inline void pm_runtime_mark_last_busy(struct device *dev) {}
 168 static inline void __pm_runtime_use_autosuspend(struct device *dev,
 169                                                 bool use) {}
 170 static inline void pm_runtime_set_autosuspend_delay(struct device *dev,
 171                                                 int delay) {}
 172 static inline u64 pm_runtime_autosuspend_expiration(
 173                                 struct device *dev) { return 0; }
 174 static inline void pm_runtime_set_memalloc_noio(struct device *dev,
 175                                                 bool enable){}
 176 static inline void pm_runtime_clean_up_links(struct device *dev) {}
 177 static inline void pm_runtime_get_suppliers(struct device *dev) {}
 178 static inline void pm_runtime_put_suppliers(struct device *dev) {}
 179 static inline void pm_runtime_new_link(struct device *dev) {}
 180 static inline void pm_runtime_drop_link(struct device *dev) {}
 181 
 182 #endif /* !CONFIG_PM */
 183 
 184 static inline int pm_runtime_idle(struct device *dev)
 185 {
 186         return __pm_runtime_idle(dev, 0);
 187 }
 188 
 189 static inline int pm_runtime_suspend(struct device *dev)
 190 {
 191         return __pm_runtime_suspend(dev, 0);
 192 }
 193 
 194 static inline int pm_runtime_autosuspend(struct device *dev)
 195 {
 196         return __pm_runtime_suspend(dev, RPM_AUTO);
 197 }
 198 
 199 static inline int pm_runtime_resume(struct device *dev)
 200 {
 201         return __pm_runtime_resume(dev, 0);
 202 }
 203 
 204 static inline int pm_request_idle(struct device *dev)
 205 {
 206         return __pm_runtime_idle(dev, RPM_ASYNC);
 207 }
 208 
 209 static inline int pm_request_resume(struct device *dev)
 210 {
 211         return __pm_runtime_resume(dev, RPM_ASYNC);
 212 }
 213 
 214 static inline int pm_request_autosuspend(struct device *dev)
 215 {
 216         return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO);
 217 }
 218 
 219 static inline int pm_runtime_get(struct device *dev)
 220 {
 221         return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC);
 222 }
 223 
 224 static inline int pm_runtime_get_sync(struct device *dev)
 225 {
 226         return __pm_runtime_resume(dev, RPM_GET_PUT);
 227 }
 228 
 229 static inline int pm_runtime_put(struct device *dev)
 230 {
 231         return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC);
 232 }
 233 
 234 static inline int pm_runtime_put_autosuspend(struct device *dev)
 235 {
 236         return __pm_runtime_suspend(dev,
 237             RPM_GET_PUT | RPM_ASYNC | RPM_AUTO);
 238 }
 239 
 240 static inline int pm_runtime_put_sync(struct device *dev)
 241 {
 242         return __pm_runtime_idle(dev, RPM_GET_PUT);
 243 }
 244 
 245 static inline int pm_runtime_put_sync_suspend(struct device *dev)
 246 {
 247         return __pm_runtime_suspend(dev, RPM_GET_PUT);
 248 }
 249 
 250 static inline int pm_runtime_put_sync_autosuspend(struct device *dev)
 251 {
 252         return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO);
 253 }
 254 
 255 static inline int pm_runtime_set_active(struct device *dev)
 256 {
 257         return __pm_runtime_set_status(dev, RPM_ACTIVE);
 258 }
 259 
 260 static inline int pm_runtime_set_suspended(struct device *dev)
 261 {
 262         return __pm_runtime_set_status(dev, RPM_SUSPENDED);
 263 }
 264 
 265 static inline void pm_runtime_disable(struct device *dev)
 266 {
 267         __pm_runtime_disable(dev, true);
 268 }
 269 
 270 static inline void pm_runtime_use_autosuspend(struct device *dev)
 271 {
 272         __pm_runtime_use_autosuspend(dev, true);
 273 }
 274 
 275 static inline void pm_runtime_dont_use_autosuspend(struct device *dev)
 276 {
 277         __pm_runtime_use_autosuspend(dev, false);
 278 }
 279 
 280 #endif
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