drivers/base/power/power.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <linux/pm_qos.h>
   3
   4 static inline void device_pm_init_common(struct device *dev)
   5 {
   6         if (!dev->power.early_init) {
   7                 spin_lock_init(&dev->power.lock);
   8                 dev->power.qos = NULL;
   9                 dev->power.early_init = true;
  10         }
  11 }
  12
  13 #ifdef CONFIG_PM
  14
  15 static inline void pm_runtime_early_init(struct device *dev)
  16 {
  17         dev->power.disable_depth = 1;
  18         device_pm_init_common(dev);
  19 }
  20
  21 extern void pm_runtime_init(struct device *dev);
  22 extern void pm_runtime_reinit(struct device *dev);
  23 extern void pm_runtime_remove(struct device *dev);
  24
  25 #define WAKE_IRQ_DEDICATED_ALLOCATED    BIT(0)
  26 #define WAKE_IRQ_DEDICATED_MANAGED      BIT(1)
  27 #define WAKE_IRQ_DEDICATED_MASK         (WAKE_IRQ_DEDICATED_ALLOCATED | \
  28                                          WAKE_IRQ_DEDICATED_MANAGED)
  29
  30 struct wake_irq {
  31         struct device *dev;
  32         unsigned int status;
  33         int irq;
  34         const char *name;
  35 };
  36
  37 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
  38 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
  39 extern void dev_pm_enable_wake_irq_check(struct device *dev,
  40                                          bool can_change_status);
  41 extern void dev_pm_disable_wake_irq_check(struct device *dev);
  42
  43 #ifdef CONFIG_PM_SLEEP
  44
  45 extern void device_wakeup_attach_irq(struct device *dev, struct wake_irq *wakeirq);
  46 extern void device_wakeup_detach_irq(struct device *dev);
  47 extern void device_wakeup_arm_wake_irqs(void);
  48 extern void device_wakeup_disarm_wake_irqs(void);
  49
  50 #else
  51
  52 static inline void device_wakeup_attach_irq(struct device *dev,
  53                                             struct wake_irq *wakeirq) {}
  54
  55 static inline void device_wakeup_detach_irq(struct device *dev)
  56 {
  57 }
  58
  59 #endif /* CONFIG_PM_SLEEP */
  60
  61 /*
  62  * sysfs.c
  63  */
  64
  65 extern int dpm_sysfs_add(struct device *dev);
  66 extern void dpm_sysfs_remove(struct device *dev);
  67 extern void rpm_sysfs_remove(struct device *dev);
  68 extern int wakeup_sysfs_add(struct device *dev);
  69 extern void wakeup_sysfs_remove(struct device *dev);
  70 extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
  71 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
  72 extern int pm_qos_sysfs_add_flags(struct device *dev);
  73 extern void pm_qos_sysfs_remove_flags(struct device *dev);
  74 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
  75 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
  76
  77 #else /* CONFIG_PM */
  78
  79 static inline void pm_runtime_early_init(struct device *dev)
  80 {
  81         device_pm_init_common(dev);
  82 }
  83
  84 static inline void pm_runtime_init(struct device *dev) {}
  85 static inline void pm_runtime_reinit(struct device *dev) {}
  86 static inline void pm_runtime_remove(struct device *dev) {}
  87
  88 static inline int dpm_sysfs_add(struct device *dev) { return 0; }
  89 static inline void dpm_sysfs_remove(struct device *dev) {}
  90
  91 #endif
  92
  93 #ifdef CONFIG_PM_SLEEP
  94
  95 /* kernel/power/main.c */
  96 extern int pm_async_enabled;
  97
  98 /* drivers/base/power/main.c */
  99 extern struct list_head dpm_list;       /* The active device list */
 100
 101 static inline struct device *to_device(struct list_head *entry)
 102 {
 103         return container_of(entry, struct device, power.entry);
 104 }
 105
 106 extern void device_pm_sleep_init(struct device *dev);
 107 extern void device_pm_add(struct device *);
 108 extern void device_pm_remove(struct device *);
 109 extern void device_pm_move_before(struct device *, struct device *);
 110 extern void device_pm_move_after(struct device *, struct device *);
 111 extern void device_pm_move_last(struct device *);
 112 extern void device_pm_check_callbacks(struct device *dev);
 113
 114 static inline bool device_pm_initialized(struct device *dev)
 115 {
 116         return dev->power.in_dpm_list;
 117 }
 118
 119 #else /* !CONFIG_PM_SLEEP */
 120
 121 static inline void device_pm_sleep_init(struct device *dev) {}
 122
 123 static inline void device_pm_add(struct device *dev) {}
 124
 125 static inline void device_pm_remove(struct device *dev)
 126 {
 127         pm_runtime_remove(dev);
 128 }
 129
 130 static inline void device_pm_move_before(struct device *deva,
 131                                          struct device *devb) {}
 132 static inline void device_pm_move_after(struct device *deva,
 133                                         struct device *devb) {}
 134 static inline void device_pm_move_last(struct device *dev) {}
 135
 136 static inline void device_pm_check_callbacks(struct device *dev) {}
 137
 138 static inline bool device_pm_initialized(struct device *dev)
 139 {
 140         return device_is_registered(dev);
 141 }
 142
 143 #endif /* !CONFIG_PM_SLEEP */
 144
 145 static inline void device_pm_init(struct device *dev)
 146 {
 147         device_pm_init_common(dev);
 148         device_pm_sleep_init(dev);
 149         pm_runtime_init(dev);
 150 }