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

source code of linux/drivers/base/power/power.h