drivers/base/power/power.h

   1
   2
   3 enum {
   4         DEVICE_PM_ON,
   5         DEVICE_PM1,
   6         DEVICE_PM2,
   7         DEVICE_PM3,
   8         DEVICE_PM_OFF,
   9 };
  10
  11 /*
  12  * shutdown.c
  13  */
  14
  15 extern int device_detach_shutdown(struct device *);
  16 extern void device_shutdown(void);
  17
  18
  19 #ifdef CONFIG_PM
  20
  21 /*
  22  * main.c
  23  */
  24
  25 /*
  26  * Used to synchronize global power management operations.
  27  */
  28 extern struct semaphore dpm_sem;
  29
  30 /*
  31  * Used to serialize changes to the dpm_* lists.
  32  */
  33 extern struct semaphore dpm_list_sem;
  34
  35 /*
  36  * The PM lists.
  37  */
  38 extern struct list_head dpm_active;
  39 extern struct list_head dpm_off;
  40 extern struct list_head dpm_off_irq;
  41
  42
  43 static inline struct dev_pm_info * to_pm_info(struct list_head * entry)
  44 {
  45         return container_of(entry, struct dev_pm_info, entry);
  46 }
  47
  48 static inline struct device * to_device(struct list_head * entry)
  49 {
  50         return container_of(to_pm_info(entry), struct device, power);
  51 }
  52
  53 extern int device_pm_add(struct device *);
  54 extern void device_pm_remove(struct device *);
  55
  56 /*
  57  * sysfs.c
  58  */
  59
  60 extern int dpm_sysfs_add(struct device *);
  61 extern void dpm_sysfs_remove(struct device *);
  62
  63 /*
  64  * resume.c
  65  */
  66
  67 extern void dpm_resume(void);
  68 extern void dpm_power_up(void);
  69 extern int resume_device(struct device *);
  70
  71 /*
  72  * suspend.c
  73  */
  74 extern int suspend_device(struct device *, pm_message_t);
  75
  76
  77 /*
  78  * runtime.c
  79  */
  80
  81 extern int dpm_runtime_suspend(struct device *, pm_message_t);
  82 extern void dpm_runtime_resume(struct device *);
  83
  84 #else /* CONFIG_PM */
  85
  86
  87 static inline int device_pm_add(struct device * dev)
  88 {
  89         return 0;
  90 }
  91 static inline void device_pm_remove(struct device * dev)
  92 {
  93
  94 }
  95
  96 static inline int dpm_runtime_suspend(struct device * dev, pm_message_t state)
  97 {
  98         return 0;
  99 }
 100
 101 static inline void dpm_runtime_resume(struct device * dev)
 102 {
 103
 104 }
 105
 106 #endif