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_REVERSE      BIT(2)
  29 #define WAKE_IRQ_DEDICATED_MASK         (WAKE_IRQ_DEDICATED_ALLOCATED | \
  30                                          WAKE_IRQ_DEDICATED_MANAGED | \
  31                                          WAKE_IRQ_DEDICATED_REVERSE)
  32 #define WAKE_IRQ_DEDICATED_ENABLED      BIT(3)
  33
  34 struct wake_irq {
  35         struct device *dev;
  36         unsigned int status;
  37         int irq;
  38         const char *name;
  39 };
  40
  41 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
  42 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
  43 extern void dev_pm_enable_wake_irq_check(struct device *dev,
  44                                          bool can_change_status);
  45 extern void dev_pm_disable_wake_irq_check(struct device *dev, bool cond_disable);
  46 extern void dev_pm_enable_wake_irq_complete(struct device *dev);
  47
  48 #ifdef CONFIG_PM_SLEEP
  49
  50 extern void device_wakeup_attach_irq(struct device *dev, struct wake_irq *wakeirq);
  51 extern void device_wakeup_detach_irq(struct device *dev);
  52 extern void device_wakeup_arm_wake_irqs(void);
  53 extern void device_wakeup_disarm_wake_irqs(void);
  54
  55 #else
  56
  57 static inline void device_wakeup_attach_irq(struct device *dev,
  58                                             struct wake_irq *wakeirq) {}
  59
  60 static inline void device_wakeup_detach_irq(struct device *dev)
  61 {
  62 }
  63
  64 #endif /* CONFIG_PM_SLEEP */
  65
  66 /*
  67  * sysfs.c
  68  */
  69
  70 extern int dpm_sysfs_add(struct device *dev);
  71 extern void dpm_sysfs_remove(struct device *dev);
  72 extern void rpm_sysfs_remove(struct device *dev);
  73 extern int wakeup_sysfs_add(struct device *dev);
  74 extern void wakeup_sysfs_remove(struct device *dev);
  75 extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
  76 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
  77 extern int pm_qos_sysfs_add_flags(struct device *dev);
  78 extern void pm_qos_sysfs_remove_flags(struct device *dev);
  79 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
  80 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
  81 extern int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid);
  82
  83 #else /* CONFIG_PM */
  84
  85 static inline void pm_runtime_early_init(struct device *dev)
  86 {
  87         device_pm_init_common(dev);
  88 }
  89
  90 static inline void pm_runtime_init(struct device *dev) {}
  91 static inline void pm_runtime_reinit(struct device *dev) {}
  92 static inline void pm_runtime_remove(struct device *dev) {}
  93
  94 static inline int dpm_sysfs_add(struct device *dev) { return 0; }
  95 static inline void dpm_sysfs_remove(struct device *dev) {}
  96 static inline int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid,
  97                                          kgid_t kgid) { return 0; }
  98
  99 #endif
 100
 101 #ifdef CONFIG_PM_SLEEP
 102
 103 /* kernel/power/main.c */
 104 extern int pm_async_enabled;
 105
 106 /* drivers/base/power/main.c */
 107 extern struct list_head dpm_list;       /* The active device list */
 108
 109 static inline struct device *to_device(struct list_head *entry)
 110 {
 111         return container_of(entry, struct device, power.entry);
 112 }
 113
 114 extern void device_pm_sleep_init(struct device *dev);
 115 extern void device_pm_add(struct device *);
 116 extern void device_pm_remove(struct device *);
 117 extern void device_pm_move_before(struct device *, struct device *);
 118 extern void device_pm_move_after(struct device *, struct device *);
 119 extern void device_pm_move_last(struct device *);
 120 extern void device_pm_check_callbacks(struct device *dev);
 121
 122 static inline bool device_pm_initialized(struct device *dev)
 123 {
 124         return dev->power.in_dpm_list;
 125 }
 126
 127 /* drivers/base/power/wakeup_stats.c */
 128 extern int wakeup_source_sysfs_add(struct device *parent,
 129                                    struct wakeup_source *ws);
 130 extern void wakeup_source_sysfs_remove(struct wakeup_source *ws);
 131
 132 extern int pm_wakeup_source_sysfs_add(struct device *parent);
 133
 134 #else /* !CONFIG_PM_SLEEP */
 135
 136 static inline void device_pm_sleep_init(struct device *dev) {}
 137
 138 static inline void device_pm_add(struct device *dev) {}
 139
 140 static inline void device_pm_remove(struct device *dev)
 141 {
 142         pm_runtime_remove(dev);
 143 }
 144
 145 static inline void device_pm_move_before(struct device *deva,
 146                                          struct device *devb) {}
 147 static inline void device_pm_move_after(struct device *deva,
 148                                         struct device *devb) {}
 149 static inline void device_pm_move_last(struct device *dev) {}
 150
 151 static inline void device_pm_check_callbacks(struct device *dev) {}
 152
 153 static inline bool device_pm_initialized(struct device *dev)
 154 {
 155         return device_is_registered(dev);
 156 }
 157
 158 static inline int pm_wakeup_source_sysfs_add(struct device *parent)
 159 {
 160         return 0;
 161 }
 162
 163 #endif /* !CONFIG_PM_SLEEP */
 164
 165 static inline void device_pm_init(struct device *dev)
 166 {
 167         device_pm_init_common(dev);
 168         device_pm_sleep_init(dev);
 169         pm_runtime_init(dev);
 170 }