1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <linux/pm_qos.h>
3
device_pm_init_common(struct device * dev)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
pm_runtime_early_init(struct device * dev)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_MASK (WAKE_IRQ_DEDICATED_ALLOCATED | \
29 WAKE_IRQ_DEDICATED_MANAGED)
30
31 struct wake_irq {
32 struct device *dev;
33 unsigned int status;
34 int irq;
35 const char *name;
36 };
37
38 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
39 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
40 extern void dev_pm_enable_wake_irq_check(struct device *dev,
41 bool can_change_status);
42 extern void dev_pm_disable_wake_irq_check(struct device *dev);
43
44 #ifdef CONFIG_PM_SLEEP
45
46 extern void device_wakeup_attach_irq(struct device *dev, struct wake_irq *wakeirq);
47 extern void device_wakeup_detach_irq(struct device *dev);
48 extern void device_wakeup_arm_wake_irqs(void);
49 extern void device_wakeup_disarm_wake_irqs(void);
50
51 #else
52
device_wakeup_attach_irq(struct device * dev,struct wake_irq * wakeirq)53 static inline void device_wakeup_attach_irq(struct device *dev,
54 struct wake_irq *wakeirq) {}
55
device_wakeup_detach_irq(struct device * dev)56 static inline void device_wakeup_detach_irq(struct device *dev)
57 {
58 }
59
60 #endif /* CONFIG_PM_SLEEP */
61
62 /*
63 * sysfs.c
64 */
65
66 extern int dpm_sysfs_add(struct device *dev);
67 extern void dpm_sysfs_remove(struct device *dev);
68 extern void rpm_sysfs_remove(struct device *dev);
69 extern int wakeup_sysfs_add(struct device *dev);
70 extern void wakeup_sysfs_remove(struct device *dev);
71 extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
72 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
73 extern int pm_qos_sysfs_add_flags(struct device *dev);
74 extern void pm_qos_sysfs_remove_flags(struct device *dev);
75 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
76 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
77 extern int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid);
78
79 #else /* CONFIG_PM */
80
pm_runtime_early_init(struct device * dev)81 static inline void pm_runtime_early_init(struct device *dev)
82 {
83 device_pm_init_common(dev);
84 }
85
pm_runtime_init(struct device * dev)86 static inline void pm_runtime_init(struct device *dev) {}
pm_runtime_reinit(struct device * dev)87 static inline void pm_runtime_reinit(struct device *dev) {}
pm_runtime_remove(struct device * dev)88 static inline void pm_runtime_remove(struct device *dev) {}
89
dpm_sysfs_add(struct device * dev)90 static inline int dpm_sysfs_add(struct device *dev) { return 0; }
dpm_sysfs_remove(struct device * dev)91 static inline void dpm_sysfs_remove(struct device *dev) {}
dpm_sysfs_change_owner(struct device * dev,kuid_t kuid,kgid_t kgid)92 static 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 */
100 extern int pm_async_enabled;
101
102 /* drivers/base/power/main.c */
103 extern struct list_head dpm_list; /* The active device list */
104
to_device(struct list_head * entry)105 static inline struct device *to_device(struct list_head *entry)
106 {
107 return container_of(entry, struct device, power.entry);
108 }
109
110 extern void device_pm_sleep_init(struct device *dev);
111 extern void device_pm_add(struct device *);
112 extern void device_pm_remove(struct device *);
113 extern void device_pm_move_before(struct device *, struct device *);
114 extern void device_pm_move_after(struct device *, struct device *);
115 extern void device_pm_move_last(struct device *);
116 extern void device_pm_check_callbacks(struct device *dev);
117
device_pm_initialized(struct device * dev)118 static 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 */
124 extern int wakeup_source_sysfs_add(struct device *parent,
125 struct wakeup_source *ws);
126 extern void wakeup_source_sysfs_remove(struct wakeup_source *ws);
127
128 extern int pm_wakeup_source_sysfs_add(struct device *parent);
129
130 #else /* !CONFIG_PM_SLEEP */
131
device_pm_sleep_init(struct device * dev)132 static inline void device_pm_sleep_init(struct device *dev) {}
133
device_pm_add(struct device * dev)134 static inline void device_pm_add(struct device *dev) {}
135
device_pm_remove(struct device * dev)136 static inline void device_pm_remove(struct device *dev)
137 {
138 pm_runtime_remove(dev);
139 }
140
device_pm_move_before(struct device * deva,struct device * devb)141 static inline void device_pm_move_before(struct device *deva,
142 struct device *devb) {}
device_pm_move_after(struct device * deva,struct device * devb)143 static inline void device_pm_move_after(struct device *deva,
144 struct device *devb) {}
device_pm_move_last(struct device * dev)145 static inline void device_pm_move_last(struct device *dev) {}
146
device_pm_check_callbacks(struct device * dev)147 static inline void device_pm_check_callbacks(struct device *dev) {}
148
device_pm_initialized(struct device * dev)149 static inline bool device_pm_initialized(struct device *dev)
150 {
151 return device_is_registered(dev);
152 }
153
pm_wakeup_source_sysfs_add(struct device * parent)154 static inline int pm_wakeup_source_sysfs_add(struct device *parent)
155 {
156 return 0;
157 }
158
159 #endif /* !CONFIG_PM_SLEEP */
160
device_pm_init(struct device * dev)161 static 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