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_reinit(struct device *dev);
  22 extern void pm_runtime_remove(struct device *dev);
  23
  24 struct wake_irq {
  25         struct device *dev;
  26         int irq;
  27         bool dedicated_irq:1;
  28 };
  29
  30 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
  31 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
  32
  33 #ifdef CONFIG_PM_SLEEP
  34
  35 extern int device_wakeup_attach_irq(struct device *dev,
  36                                     struct wake_irq *wakeirq);
  37 extern void device_wakeup_detach_irq(struct device *dev);
  38 extern void device_wakeup_arm_wake_irqs(void);
  39 extern void device_wakeup_disarm_wake_irqs(void);
  40
  41 #else
  42
  43 static inline int
  44 device_wakeup_attach_irq(struct device *dev,
  45                          struct wake_irq *wakeirq)
  46 {
  47         return 0;
  48 }
  49
  50 static inline void device_wakeup_detach_irq(struct device *dev)
  51 {
  52 }
  53
  54 static inline void device_wakeup_arm_wake_irqs(void)
  55 {
  56 }
  57
  58 static inline void device_wakeup_disarm_wake_irqs(void)
  59 {
  60 }
  61
  62 #endif /* CONFIG_PM_SLEEP */
  63
  64 /*
  65  * sysfs.c
  66  */
  67
  68 extern int dpm_sysfs_add(struct device *dev);
  69 extern void dpm_sysfs_remove(struct device *dev);
  70 extern void rpm_sysfs_remove(struct device *dev);
  71 extern int wakeup_sysfs_add(struct device *dev);
  72 extern void wakeup_sysfs_remove(struct device *dev);
  73 extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
  74 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
  75 extern int pm_qos_sysfs_add_flags(struct device *dev);
  76 extern void pm_qos_sysfs_remove_flags(struct device *dev);
  77 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
  78 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
  79
  80 #else /* CONFIG_PM */
  81
  82 static inline void pm_runtime_early_init(struct device *dev)
  83 {
  84         device_pm_init_common(dev);
  85 }
  86
  87 static inline void pm_runtime_init(struct device *dev) {}
  88 static inline void pm_runtime_reinit(struct device *dev) {}
  89 static inline void pm_runtime_remove(struct device *dev) {}
  90
  91 static inline int dpm_sysfs_add(struct device *dev) { return 0; }
  92 static inline void dpm_sysfs_remove(struct device *dev) {}
  93 static inline void rpm_sysfs_remove(struct device *dev) {}
  94 static inline int wakeup_sysfs_add(struct device *dev) { return 0; }
  95 static inline void wakeup_sysfs_remove(struct device *dev) {}
  96 static inline int pm_qos_sysfs_add(struct device *dev) { return 0; }
  97 static inline void pm_qos_sysfs_remove(struct device *dev) {}
  98
  99 static inline void dev_pm_arm_wake_irq(struct wake_irq *wirq)
 100 {
 101 }
 102
 103 static inline void dev_pm_disarm_wake_irq(struct wake_irq *wirq)
 104 {
 105 }
 106
 107 #endif
 108
 109 #ifdef CONFIG_PM_SLEEP
 110
 111 /* kernel/power/main.c */
 112 extern int pm_async_enabled;
 113
 114 /* drivers/base/power/main.c */
 115 extern struct list_head dpm_list;       /* The active device list */
 116
 117 static inline struct device *to_device(struct list_head *entry)
 118 {
 119         return container_of(entry, struct device, power.entry);
 120 }
 121
 122 extern void device_pm_sleep_init(struct device *dev);
 123 extern void device_pm_add(struct device *);
 124 extern void device_pm_remove(struct device *);
 125 extern void device_pm_move_before(struct device *, struct device *);
 126 extern void device_pm_move_after(struct device *, struct device *);
 127 extern void device_pm_move_last(struct device *);
 128 extern void device_pm_check_callbacks(struct device *dev);
 129
 130 #else /* !CONFIG_PM_SLEEP */
 131
 132 static inline void device_pm_sleep_init(struct device *dev) {}
 133
 134 static inline void device_pm_add(struct device *dev) {}
 135
 136 static inline void device_pm_remove(struct device *dev)
 137 {
 138         pm_runtime_remove(dev);
 139 }
 140
 141 static inline void device_pm_move_before(struct device *deva,
 142                                          struct device *devb) {}
 143 static inline void device_pm_move_after(struct device *deva,
 144                                         struct device *devb) {}
 145 static inline void device_pm_move_last(struct device *dev) {}
 146
 147 static inline void device_pm_check_callbacks(struct device *dev) {}
 148
 149 #endif /* !CONFIG_PM_SLEEP */
 150
 151 static inline void device_pm_init(struct device *dev)
 152 {
 153         device_pm_init_common(dev);
 154         device_pm_sleep_init(dev);
 155         pm_runtime_init(dev);
 156 }