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