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