LXR linux/drivers/base/power/power.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#include <linux/pm_qos.h>
   3
   4static 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
  15static inline void pm_runtime_early_init(struct device *dev)
  16{
  17        dev->power.disable_depth = 1;
  18        device_pm_init_common(dev);
  19}
  20
  21extern void pm_runtime_init(struct device *dev);
  22extern void pm_runtime_reinit(struct device *dev);
  23extern void pm_runtime_remove(struct device *dev);
  24extern 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
  31struct wake_irq {
  32        struct device *dev;
  33        unsigned int status;
  34        int irq;
  35        const char *name;
  36};
  37
  38extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
  39extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
  40extern void dev_pm_enable_wake_irq_check(struct device *dev,
  41                                         bool can_change_status);
  42extern void dev_pm_disable_wake_irq_check(struct device *dev);
  43
  44#ifdef CONFIG_PM_SLEEP
  45
  46extern void device_wakeup_attach_irq(struct device *dev, struct wake_irq *wakeirq);
  47extern void device_wakeup_detach_irq(struct device *dev);
  48extern void device_wakeup_arm_wake_irqs(void);
  49extern void device_wakeup_disarm_wake_irqs(void);
  50
  51#else
  52
  53static inline void device_wakeup_attach_irq(struct device *dev,
  54                                            struct wake_irq *wakeirq) {}
  55
  56static inline void device_wakeup_detach_irq(struct device *dev)
  57{
  58}
  59
  60#endif /* CONFIG_PM_SLEEP */
  61
  62/*
  63 * sysfs.c
  64 */
  65
  66extern int dpm_sysfs_add(struct device *dev);
  67extern void dpm_sysfs_remove(struct device *dev);
  68extern void rpm_sysfs_remove(struct device *dev);
  69extern int wakeup_sysfs_add(struct device *dev);
  70extern void wakeup_sysfs_remove(struct device *dev);
  71extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
  72extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
  73extern int pm_qos_sysfs_add_flags(struct device *dev);
  74extern void pm_qos_sysfs_remove_flags(struct device *dev);
  75extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
  76extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
  77extern int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid);
  78
  79#else /* CONFIG_PM */
  80
  81static inline void pm_runtime_early_init(struct device *dev)
  82{
  83        device_pm_init_common(dev);
  84}
  85
  86static inline void pm_runtime_init(struct device *dev) {}
  87static inline void pm_runtime_reinit(struct device *dev) {}
  88static inline void pm_runtime_remove(struct device *dev) {}
  89
  90static inline int dpm_sysfs_add(struct device *dev) { return 0; }
  91static inline void dpm_sysfs_remove(struct device *dev) {}
  92static 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 */
 100extern int pm_async_enabled;
 101
 102/* drivers/base/power/main.c */
 103extern struct list_head dpm_list;       /* The active device list */
 104
 105static inline struct device *to_device(struct list_head *entry)
 106{
 107        return container_of(entry, struct device, power.entry);
 108}
 109
 110extern void device_pm_sleep_init(struct device *dev);
 111extern void device_pm_add(struct device *);
 112extern void device_pm_remove(struct device *);
 113extern void device_pm_move_before(struct device *, struct device *);
 114extern void device_pm_move_after(struct device *, struct device *);
 115extern void device_pm_move_last(struct device *);
 116extern void device_pm_check_callbacks(struct device *dev);
 117
 118static 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 */
 124extern int wakeup_source_sysfs_add(struct device *parent,
 125                                   struct wakeup_source *ws);
 126extern void wakeup_source_sysfs_remove(struct wakeup_source *ws);
 127
 128extern int pm_wakeup_source_sysfs_add(struct device *parent);
 129
 130#else /* !CONFIG_PM_SLEEP */
 131
 132static inline void device_pm_sleep_init(struct device *dev) {}
 133
 134static inline void device_pm_add(struct device *dev) {}
 135
 136static inline void device_pm_remove(struct device *dev)
 137{
 138        pm_runtime_remove(dev);
 139}
 140
 141static inline void device_pm_move_before(struct device *deva,
 142                                         struct device *devb) {}
 143static inline void device_pm_move_after(struct device *deva,
 144                                        struct device *devb) {}
 145static inline void device_pm_move_last(struct device *dev) {}
 146
 147static inline void device_pm_check_callbacks(struct device *dev) {}
 148
 149static inline bool device_pm_initialized(struct device *dev)
 150{
 151        return device_is_registered(dev);
 152}
 153
 154static inline int pm_wakeup_source_sysfs_add(struct device *parent)
 155{
 156        return 0;
 157}
 158
 159#endif /* !CONFIG_PM_SLEEP */
 160
 161static 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}
 167