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_REVERSE	BIT(2)
29 #define WAKE_IRQ_DEDICATED_MASK		(WAKE_IRQ_DEDICATED_ALLOCATED | \
30 					 WAKE_IRQ_DEDICATED_MANAGED | \
31 					 WAKE_IRQ_DEDICATED_REVERSE)
32 #define WAKE_IRQ_DEDICATED_ENABLED	BIT(3)
33 
34 struct wake_irq {
35 	struct device *dev;
36 	unsigned int status;
37 	int irq;
38 	const char *name;
39 };
40 
41 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
42 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
43 extern void dev_pm_enable_wake_irq_check(struct device *dev,
44 					 bool can_change_status);
45 extern void dev_pm_disable_wake_irq_check(struct device *dev, bool cond_disable);
46 extern void dev_pm_enable_wake_irq_complete(struct device *dev);
47 
48 #ifdef CONFIG_PM_SLEEP
49 
50 extern void device_wakeup_attach_irq(struct device *dev, struct wake_irq *wakeirq);
51 extern void device_wakeup_detach_irq(struct device *dev);
52 extern void device_wakeup_arm_wake_irqs(void);
53 extern void device_wakeup_disarm_wake_irqs(void);
54 
55 #else
56 
device_wakeup_attach_irq(struct device * dev,struct wake_irq * wakeirq)57 static inline void device_wakeup_attach_irq(struct device *dev,
58 					    struct wake_irq *wakeirq) {}
59 
device_wakeup_detach_irq(struct device * dev)60 static inline void device_wakeup_detach_irq(struct device *dev)
61 {
62 }
63 
64 #endif /* CONFIG_PM_SLEEP */
65 
66 /*
67  * sysfs.c
68  */
69 
70 extern int dpm_sysfs_add(struct device *dev);
71 extern void dpm_sysfs_remove(struct device *dev);
72 extern void rpm_sysfs_remove(struct device *dev);
73 extern int wakeup_sysfs_add(struct device *dev);
74 extern void wakeup_sysfs_remove(struct device *dev);
75 extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
76 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
77 extern int pm_qos_sysfs_add_flags(struct device *dev);
78 extern void pm_qos_sysfs_remove_flags(struct device *dev);
79 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
80 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
81 extern int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid);
82 
83 #else /* CONFIG_PM */
84 
pm_runtime_early_init(struct device * dev)85 static inline void pm_runtime_early_init(struct device *dev)
86 {
87 	device_pm_init_common(dev);
88 }
89 
pm_runtime_init(struct device * dev)90 static inline void pm_runtime_init(struct device *dev) {}
pm_runtime_reinit(struct device * dev)91 static inline void pm_runtime_reinit(struct device *dev) {}
pm_runtime_remove(struct device * dev)92 static inline void pm_runtime_remove(struct device *dev) {}
93 
dpm_sysfs_add(struct device * dev)94 static inline int dpm_sysfs_add(struct device *dev) { return 0; }
dpm_sysfs_remove(struct device * dev)95 static inline void dpm_sysfs_remove(struct device *dev) {}
dpm_sysfs_change_owner(struct device * dev,kuid_t kuid,kgid_t kgid)96 static inline int dpm_sysfs_change_owner(struct device *dev, kuid_t kuid,
97 					 kgid_t kgid) { return 0; }
98 
99 #endif
100 
101 #ifdef CONFIG_PM_SLEEP
102 
103 /* kernel/power/main.c */
104 extern int pm_async_enabled;
105 
106 /* drivers/base/power/main.c */
107 extern struct list_head dpm_list;	/* The active device list */
108 
to_device(struct list_head * entry)109 static inline struct device *to_device(struct list_head *entry)
110 {
111 	return container_of(entry, struct device, power.entry);
112 }
113 
114 extern void device_pm_sleep_init(struct device *dev);
115 extern void device_pm_add(struct device *);
116 extern void device_pm_remove(struct device *);
117 extern void device_pm_move_before(struct device *, struct device *);
118 extern void device_pm_move_after(struct device *, struct device *);
119 extern void device_pm_move_last(struct device *);
120 extern void device_pm_check_callbacks(struct device *dev);
121 
device_pm_initialized(struct device * dev)122 static inline bool device_pm_initialized(struct device *dev)
123 {
124 	return dev->power.in_dpm_list;
125 }
126 
127 /* drivers/base/power/wakeup_stats.c */
128 extern int wakeup_source_sysfs_add(struct device *parent,
129 				   struct wakeup_source *ws);
130 extern void wakeup_source_sysfs_remove(struct wakeup_source *ws);
131 
132 extern int pm_wakeup_source_sysfs_add(struct device *parent);
133 
134 #else /* !CONFIG_PM_SLEEP */
135 
device_pm_sleep_init(struct device * dev)136 static inline void device_pm_sleep_init(struct device *dev) {}
137 
device_pm_add(struct device * dev)138 static inline void device_pm_add(struct device *dev) {}
139 
device_pm_remove(struct device * dev)140 static inline void device_pm_remove(struct device *dev)
141 {
142 	pm_runtime_remove(dev);
143 }
144 
device_pm_move_before(struct device * deva,struct device * devb)145 static inline void device_pm_move_before(struct device *deva,
146 					 struct device *devb) {}
device_pm_move_after(struct device * deva,struct device * devb)147 static inline void device_pm_move_after(struct device *deva,
148 					struct device *devb) {}
device_pm_move_last(struct device * dev)149 static inline void device_pm_move_last(struct device *dev) {}
150 
device_pm_check_callbacks(struct device * dev)151 static inline void device_pm_check_callbacks(struct device *dev) {}
152 
device_pm_initialized(struct device * dev)153 static inline bool device_pm_initialized(struct device *dev)
154 {
155 	return device_is_registered(dev);
156 }
157 
pm_wakeup_source_sysfs_add(struct device * parent)158 static inline int pm_wakeup_source_sysfs_add(struct device *parent)
159 {
160 	return 0;
161 }
162 
163 #endif /* !CONFIG_PM_SLEEP */
164 
device_pm_init(struct device * dev)165 static inline void device_pm_init(struct device *dev)
166 {
167 	device_pm_init_common(dev);
168 	device_pm_sleep_init(dev);
169 	pm_runtime_init(dev);
170 }
171