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 #define WAKE_IRQ_DEDICATED_ALLOCATED    BIT(0)
  25 #define WAKE_IRQ_DEDICATED_MANAGED      BIT(1)
  26 #define WAKE_IRQ_DEDICATED_MASK         (WAKE_IRQ_DEDICATED_ALLOCATED | \
  27                                          WAKE_IRQ_DEDICATED_MANAGED)
  28
  29 struct wake_irq {
  30         struct device *dev;
  31         unsigned int status;
  32         int irq;
  33 };
  34
  35 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
  36 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
  37 extern void dev_pm_enable_wake_irq_check(struct device *dev,
  38                                          bool can_change_status);
  39 extern void dev_pm_disable_wake_irq_check(struct device *dev);
  40
  41 #ifdef CONFIG_PM_SLEEP
  42
  43 extern int device_wakeup_attach_irq(struct device *dev,
  44                                     struct wake_irq *wakeirq);
  45 extern void device_wakeup_detach_irq(struct device *dev);
  46 extern void device_wakeup_arm_wake_irqs(void);
  47 extern void device_wakeup_disarm_wake_irqs(void);
  48
  49 #else
  50
  51 static inline int
  52 device_wakeup_attach_irq(struct device *dev,
  53                          struct wake_irq *wakeirq)
  54 {
  55         return 0;
  56 }
  57
  58 static inline void device_wakeup_detach_irq(struct device *dev)
  59 {
  60 }
  61
  62 static inline void device_wakeup_arm_wake_irqs(void)
  63 {
  64 }
  65
  66 static inline void device_wakeup_disarm_wake_irqs(void)
  67 {
  68 }
  69
  70 #endif /* CONFIG_PM_SLEEP */
  71
  72 /*
  73  * sysfs.c
  74  */
  75
  76 extern int dpm_sysfs_add(struct device *dev);
  77 extern void dpm_sysfs_remove(struct device *dev);
  78 extern void rpm_sysfs_remove(struct device *dev);
  79 extern int wakeup_sysfs_add(struct device *dev);
  80 extern void wakeup_sysfs_remove(struct device *dev);
  81 extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
  82 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
  83 extern int pm_qos_sysfs_add_flags(struct device *dev);
  84 extern void pm_qos_sysfs_remove_flags(struct device *dev);
  85 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
  86 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
  87
  88 #else /* CONFIG_PM */
  89
  90 static inline void pm_runtime_early_init(struct device *dev)
  91 {
  92         device_pm_init_common(dev);
  93 }
  94
  95 static inline void pm_runtime_init(struct device *dev) {}
  96 static inline void pm_runtime_reinit(struct device *dev) {}
  97 static inline void pm_runtime_remove(struct device *dev) {}
  98
  99 static inline int dpm_sysfs_add(struct device *dev) { return 0; }
 100 static inline void dpm_sysfs_remove(struct device *dev) {}
 101 static inline void rpm_sysfs_remove(struct device *dev) {}
 102 static inline int wakeup_sysfs_add(struct device *dev) { return 0; }
 103 static inline void wakeup_sysfs_remove(struct device *dev) {}
 104 static inline int pm_qos_sysfs_add(struct device *dev) { return 0; }
 105 static inline void pm_qos_sysfs_remove(struct device *dev) {}
 106
 107 static inline void dev_pm_arm_wake_irq(struct wake_irq *wirq)
 108 {
 109 }
 110
 111 static inline void dev_pm_disarm_wake_irq(struct wake_irq *wirq)
 112 {
 113 }
 114
 115 static inline void dev_pm_enable_wake_irq_check(struct device *dev,
 116                                                 bool can_change_status)
 117 {
 118 }
 119
 120 static inline void dev_pm_disable_wake_irq_check(struct device *dev)
 121 {
 122 }
 123
 124 #endif
 125
 126 #ifdef CONFIG_PM_SLEEP
 127
 128 /* kernel/power/main.c */
 129 extern int pm_async_enabled;
 130
 131 /* drivers/base/power/main.c */
 132 extern struct list_head dpm_list;       /* The active device list */
 133
 134 static inline struct device *to_device(struct list_head *entry)
 135 {
 136         return container_of(entry, struct device, power.entry);
 137 }
 138
 139 extern void device_pm_sleep_init(struct device *dev);
 140 extern void device_pm_add(struct device *);
 141 extern void device_pm_remove(struct device *);
 142 extern void device_pm_move_before(struct device *, struct device *);
 143 extern void device_pm_move_after(struct device *, struct device *);
 144 extern void device_pm_move_last(struct device *);
 145 extern void device_pm_check_callbacks(struct device *dev);
 146
 147 static inline bool device_pm_initialized(struct device *dev)
 148 {
 149         return dev->power.in_dpm_list;
 150 }
 151
 152 #else /* !CONFIG_PM_SLEEP */
 153
 154 static inline void device_pm_sleep_init(struct device *dev) {}
 155
 156 static inline void device_pm_add(struct device *dev) {}
 157
 158 static inline void device_pm_remove(struct device *dev)
 159 {
 160         pm_runtime_remove(dev);
 161 }
 162
 163 static inline void device_pm_move_before(struct device *deva,
 164                                          struct device *devb) {}
 165 static inline void device_pm_move_after(struct device *deva,
 166                                         struct device *devb) {}
 167 static inline void device_pm_move_last(struct device *dev) {}
 168
 169 static inline void device_pm_check_callbacks(struct device *dev) {}
 170
 171 static inline bool device_pm_initialized(struct device *dev)
 172 {
 173         return device_is_registered(dev);
 174 }
 175
 176 #endif /* !CONFIG_PM_SLEEP */
 177
 178 static inline void device_pm_init(struct device *dev)
 179 {
 180         device_pm_init_common(dev);
 181         device_pm_sleep_init(dev);
 182         pm_runtime_init(dev);
 183 }