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 extern u64 pm_runtime_active_time(struct device *dev);
  25
  26 #define WAKE_IRQ_DEDICATED_ALLOCATED    BIT(0)
  27 #define WAKE_IRQ_DEDICATED_MANAGED      BIT(1)
  28 #define WAKE_IRQ_DEDICATED_MASK         (WAKE_IRQ_DEDICATED_ALLOCATED | \
  29                                          WAKE_IRQ_DEDICATED_MANAGED)
  30
  31 struct wake_irq {
  32         struct device *dev;
  33         unsigned int status;
  34         int irq;
  35         const char *name;
  36 };
  37
  38 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
  39 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
  40 extern void dev_pm_enable_wake_irq_check(struct device *dev,
  41                                          bool can_change_status);
  42 extern void dev_pm_disable_wake_irq_check(struct device *dev);
  43
  44 #ifdef CONFIG_PM_SLEEP
  45
  46 extern void device_wakeup_attach_irq(struct device *dev, struct wake_irq *wakeirq);
  47 extern void device_wakeup_detach_irq(struct device *dev);
  48 extern void device_wakeup_arm_wake_irqs(void);
  49 extern void device_wakeup_disarm_wake_irqs(void);
  50
  51 #else
  52
  53 static inline void device_wakeup_attach_irq(struct device *dev,
  54                                             struct wake_irq *wakeirq) {}
  55
  56 static inline void device_wakeup_detach_irq(struct device *dev)
  57 {
  58 }
  59
  60 #endif /* CONFIG_PM_SLEEP */
  61
  62 /*
  63  * sysfs.c
  64  */
  65
  66 extern int dpm_sysfs_add(struct device *dev);
  67 extern void dpm_sysfs_remove(struct device *dev);
  68 extern void rpm_sysfs_remove(struct device *dev);
  69 extern int wakeup_sysfs_add(struct device *dev);
  70 extern void wakeup_sysfs_remove(struct device *dev);
  71 extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
  72 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
  73 extern int pm_qos_sysfs_add_flags(struct device *dev);
  74 extern void pm_qos_sysfs_remove_flags(struct device *dev);
  75 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
  76 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
  77 extern int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid);
  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_reinit(struct device *dev) {}
  88 static inline void pm_runtime_remove(struct device *dev) {}
  89
  90 static inline int dpm_sysfs_add(struct device *dev) { return 0; }
  91 static inline void dpm_sysfs_remove(struct device *dev) {}
  92 static inline int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid,
  93                                          kgid_t kgid) { return 0; }
  94
  95 #endif
  96
  97 #ifdef CONFIG_PM_SLEEP
  98
  99 /* kernel/power/main.c */
 100 extern int pm_async_enabled;
 101
 102 /* drivers/base/power/main.c */
 103 extern struct list_head dpm_list;       /* The active device list */
 104
 105 static inline struct device *to_device(struct list_head *entry)
 106 {
 107         return container_of(entry, struct device, power.entry);
 108 }
 109
 110 extern void device_pm_sleep_init(struct device *dev);
 111 extern void device_pm_add(struct device *);
 112 extern void device_pm_remove(struct device *);
 113 extern void device_pm_move_before(struct device *, struct device *);
 114 extern void device_pm_move_after(struct device *, struct device *);
 115 extern void device_pm_move_last(struct device *);
 116 extern void device_pm_check_callbacks(struct device *dev);
 117
 118 static inline bool device_pm_initialized(struct device *dev)
 119 {
 120         return dev->power.in_dpm_list;
 121 }
 122
 123 /* drivers/base/power/wakeup_stats.c */
 124 extern int wakeup_source_sysfs_add(struct device *parent,
 125                                    struct wakeup_source *ws);
 126 extern void wakeup_source_sysfs_remove(struct wakeup_source *ws);
 127
 128 extern int pm_wakeup_source_sysfs_add(struct device *parent);
 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 static inline bool device_pm_initialized(struct device *dev)
 150 {
 151         return device_is_registered(dev);
 152 }
 153
 154 static inline int pm_wakeup_source_sysfs_add(struct device *parent)
 155 {
 156         return 0;
 157 }
 158
 159 #endif /* !CONFIG_PM_SLEEP */
 160
 161 static inline void device_pm_init(struct device *dev)
 162 {
 163         device_pm_init_common(dev);
 164         device_pm_sleep_init(dev);
 165         pm_runtime_init(dev);
 166 }