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 struct wake_irq {
  24         struct device *dev;
  25         int irq;
  26         bool dedicated_irq:1;
  27 };
  28
  29 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
  30 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
  31
  32 #ifdef CONFIG_PM_SLEEP
  33
  34 extern int device_wakeup_attach_irq(struct device *dev,
  35                                     struct wake_irq *wakeirq);
  36 extern void device_wakeup_detach_irq(struct device *dev);
  37 extern void device_wakeup_arm_wake_irqs(void);
  38 extern void device_wakeup_disarm_wake_irqs(void);
  39
  40 #else
  41
  42 static inline int
  43 device_wakeup_attach_irq(struct device *dev,
  44                          struct wake_irq *wakeirq)
  45 {
  46         return 0;
  47 }
  48
  49 static inline void device_wakeup_detach_irq(struct device *dev)
  50 {
  51 }
  52
  53 static inline void device_wakeup_arm_wake_irqs(void)
  54 {
  55 }
  56
  57 static inline void device_wakeup_disarm_wake_irqs(void)
  58 {
  59 }
  60
  61 #endif /* CONFIG_PM_SLEEP */
  62
  63 /*
  64  * sysfs.c
  65  */
  66
  67 extern int dpm_sysfs_add(struct device *dev);
  68 extern void dpm_sysfs_remove(struct device *dev);
  69 extern void rpm_sysfs_remove(struct device *dev);
  70 extern int wakeup_sysfs_add(struct device *dev);
  71 extern void wakeup_sysfs_remove(struct device *dev);
  72 extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
  73 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
  74 extern int pm_qos_sysfs_add_flags(struct device *dev);
  75 extern void pm_qos_sysfs_remove_flags(struct device *dev);
  76 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
  77 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
  78
  79 #else /* CONFIG_PM */
  80
  81 static inline void pm_runtime_early_init(struct device *dev)
  82 {
  83         device_pm_init_common(dev);
  84 }
  85
  86 static inline void pm_runtime_init(struct device *dev) {}
  87 static inline void pm_runtime_remove(struct device *dev) {}
  88
  89 static inline int dpm_sysfs_add(struct device *dev) { return 0; }
  90 static inline void dpm_sysfs_remove(struct device *dev) {}
  91 static inline void rpm_sysfs_remove(struct device *dev) {}
  92 static inline int wakeup_sysfs_add(struct device *dev) { return 0; }
  93 static inline void wakeup_sysfs_remove(struct device *dev) {}
  94 static inline int pm_qos_sysfs_add(struct device *dev) { return 0; }
  95 static inline void pm_qos_sysfs_remove(struct device *dev) {}
  96
  97 static inline void dev_pm_arm_wake_irq(struct wake_irq *wirq)
  98 {
  99 }
 100
 101 static inline void dev_pm_disarm_wake_irq(struct wake_irq *wirq)
 102 {
 103 }
 104
 105 #endif
 106
 107 #ifdef CONFIG_PM_SLEEP
 108
 109 /* kernel/power/main.c */
 110 extern int pm_async_enabled;
 111
 112 /* drivers/base/power/main.c */
 113 extern struct list_head dpm_list;       /* The active device list */
 114
 115 static inline struct device *to_device(struct list_head *entry)
 116 {
 117         return container_of(entry, struct device, power.entry);
 118 }
 119
 120 extern void device_pm_sleep_init(struct device *dev);
 121 extern void device_pm_add(struct device *);
 122 extern void device_pm_remove(struct device *);
 123 extern void device_pm_move_before(struct device *, struct device *);
 124 extern void device_pm_move_after(struct device *, struct device *);
 125 extern void device_pm_move_last(struct device *);
 126
 127 #else /* !CONFIG_PM_SLEEP */
 128
 129 static inline void device_pm_sleep_init(struct device *dev) {}
 130
 131 static inline void device_pm_add(struct device *dev) {}
 132
 133 static inline void device_pm_remove(struct device *dev)
 134 {
 135         pm_runtime_remove(dev);
 136 }
 137
 138 static inline void device_pm_move_before(struct device *deva,
 139                                          struct device *devb) {}
 140 static inline void device_pm_move_after(struct device *deva,
 141                                         struct device *devb) {}
 142 static inline void device_pm_move_last(struct device *dev) {}
 143
 144 #endif /* !CONFIG_PM_SLEEP */
 145
 146 static inline void device_pm_init(struct device *dev)
 147 {
 148         device_pm_init_common(dev);
 149         device_pm_sleep_init(dev);
 150         pm_runtime_init(dev);
 151 }