drivers/base/power/power.h

   1 #include <linux/pm_qos.h>
   2
   3 static inline void device_pm_init_common(struct device *dev)
   4 {
   5         if (!dev->power.early_init) {
   6                 spin_lock_init(&dev->power.lock);
   7                 dev->power.qos = NULL;
   8                 dev->power.early_init = true;
   9         }
  10 }
  11
  12 #ifdef CONFIG_PM
  13
  14 static inline void pm_runtime_early_init(struct device *dev)
  15 {
  16         dev->power.disable_depth = 1;
  17         device_pm_init_common(dev);
  18 }
  19
  20 extern void pm_runtime_init(struct device *dev);
  21 extern void pm_runtime_remove(struct device *dev);
  22
  23 /*
  24  * sysfs.c
  25  */
  26
  27 extern int dpm_sysfs_add(struct device *dev);
  28 extern void dpm_sysfs_remove(struct device *dev);
  29 extern void rpm_sysfs_remove(struct device *dev);
  30 extern int wakeup_sysfs_add(struct device *dev);
  31 extern void wakeup_sysfs_remove(struct device *dev);
  32 extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
  33 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
  34 extern int pm_qos_sysfs_add_flags(struct device *dev);
  35 extern void pm_qos_sysfs_remove_flags(struct device *dev);
  36
  37 #else /* CONFIG_PM */
  38
  39 static inline void pm_runtime_early_init(struct device *dev)
  40 {
  41         device_pm_init_common(dev);
  42 }
  43
  44 static inline void pm_runtime_init(struct device *dev) {}
  45 static inline void pm_runtime_remove(struct device *dev) {}
  46
  47 static inline int dpm_sysfs_add(struct device *dev) { return 0; }
  48 static inline void dpm_sysfs_remove(struct device *dev) {}
  49 static inline void rpm_sysfs_remove(struct device *dev) {}
  50 static inline int wakeup_sysfs_add(struct device *dev) { return 0; }
  51 static inline void wakeup_sysfs_remove(struct device *dev) {}
  52 static inline int pm_qos_sysfs_add(struct device *dev) { return 0; }
  53 static inline void pm_qos_sysfs_remove(struct device *dev) {}
  54
  55 #endif
  56
  57 #ifdef CONFIG_PM_SLEEP
  58
  59 /* kernel/power/main.c */
  60 extern int pm_async_enabled;
  61
  62 /* drivers/base/power/main.c */
  63 extern struct list_head dpm_list;       /* The active device list */
  64
  65 static inline struct device *to_device(struct list_head *entry)
  66 {
  67         return container_of(entry, struct device, power.entry);
  68 }
  69
  70 extern void device_pm_sleep_init(struct device *dev);
  71 extern void device_pm_add(struct device *);
  72 extern void device_pm_remove(struct device *);
  73 extern void device_pm_move_before(struct device *, struct device *);
  74 extern void device_pm_move_after(struct device *, struct device *);
  75 extern void device_pm_move_last(struct device *);
  76
  77 #else /* !CONFIG_PM_SLEEP */
  78
  79 static inline void device_pm_sleep_init(struct device *dev) {}
  80
  81 static inline void device_pm_add(struct device *dev) {}
  82
  83 static inline void device_pm_remove(struct device *dev)
  84 {
  85         pm_runtime_remove(dev);
  86 }
  87
  88 static inline void device_pm_move_before(struct device *deva,
  89                                          struct device *devb) {}
  90 static inline void device_pm_move_after(struct device *deva,
  91                                         struct device *devb) {}
  92 static inline void device_pm_move_last(struct device *dev) {}
  93
  94 #endif /* !CONFIG_PM_SLEEP */
  95
  96 static inline void device_pm_init(struct device *dev)
  97 {
  98         device_pm_init_common(dev);
  99         device_pm_sleep_init(dev);
 100         pm_runtime_init(dev);
 101 }