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.power_state = PMSG_INVALID;
   8                 dev->power.early_init = true;
   9         }
  10 }
  11
  12 #ifdef CONFIG_PM_RUNTIME
  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 #else /* !CONFIG_PM_RUNTIME */
  24
  25 static inline void pm_runtime_early_init(struct device *dev)
  26 {
  27         device_pm_init_common(dev);
  28 }
  29
  30 static inline void pm_runtime_init(struct device *dev) {}
  31 static inline void pm_runtime_remove(struct device *dev) {}
  32
  33 #endif /* !CONFIG_PM_RUNTIME */
  34
  35 #ifdef CONFIG_PM_SLEEP
  36
  37 /* kernel/power/main.c */
  38 extern int pm_async_enabled;
  39
  40 /* drivers/base/power/main.c */
  41 extern struct list_head dpm_list;       /* The active device list */
  42
  43 static inline struct device *to_device(struct list_head *entry)
  44 {
  45         return container_of(entry, struct device, power.entry);
  46 }
  47
  48 extern void device_pm_sleep_init(struct device *dev);
  49 extern void device_pm_add(struct device *);
  50 extern void device_pm_remove(struct device *);
  51 extern void device_pm_move_before(struct device *, struct device *);
  52 extern void device_pm_move_after(struct device *, struct device *);
  53 extern void device_pm_move_last(struct device *);
  54
  55 #else /* !CONFIG_PM_SLEEP */
  56
  57 static inline void device_pm_sleep_init(struct device *dev) {}
  58
  59 static inline void device_pm_add(struct device *dev)
  60 {
  61         dev_pm_qos_constraints_init(dev);
  62 }
  63
  64 static inline void device_pm_remove(struct device *dev)
  65 {
  66         dev_pm_qos_constraints_destroy(dev);
  67         pm_runtime_remove(dev);
  68 }
  69
  70 static inline void device_pm_move_before(struct device *deva,
  71                                          struct device *devb) {}
  72 static inline void device_pm_move_after(struct device *deva,
  73                                         struct device *devb) {}
  74 static inline void device_pm_move_last(struct device *dev) {}
  75
  76 #endif /* !CONFIG_PM_SLEEP */
  77
  78 static inline void device_pm_init(struct device *dev)
  79 {
  80         device_pm_init_common(dev);
  81         device_pm_sleep_init(dev);
  82         pm_runtime_init(dev);
  83 }
  84
  85 #ifdef CONFIG_PM
  86
  87 /*
  88  * sysfs.c
  89  */
  90
  91 extern int dpm_sysfs_add(struct device *dev);
  92 extern void dpm_sysfs_remove(struct device *dev);
  93 extern void rpm_sysfs_remove(struct device *dev);
  94 extern int wakeup_sysfs_add(struct device *dev);
  95 extern void wakeup_sysfs_remove(struct device *dev);
  96 extern int pm_qos_sysfs_add_latency(struct device *dev);
  97 extern void pm_qos_sysfs_remove_latency(struct device *dev);
  98 extern int pm_qos_sysfs_add_flags(struct device *dev);
  99 extern void pm_qos_sysfs_remove_flags(struct device *dev);
 100
 101 #else /* CONFIG_PM */
 102
 103 static inline int dpm_sysfs_add(struct device *dev) { return 0; }
 104 static inline void dpm_sysfs_remove(struct device *dev) {}
 105 static inline void rpm_sysfs_remove(struct device *dev) {}
 106 static inline int wakeup_sysfs_add(struct device *dev) { return 0; }
 107 static inline void wakeup_sysfs_remove(struct device *dev) {}
 108 static inline int pm_qos_sysfs_add(struct device *dev) { return 0; }
 109 static inline void pm_qos_sysfs_remove(struct device *dev) {}
 110
 111 #endif