xref: /linux/drivers/base/power/power.h (revision e5c86679d5e864947a52fb31e45a425dea3e7fa9)
1 #include <linux/pm_qos.h>
2 
3 static inline void device_pm_init_common(struct device *dev)
4 {
5 	if (!dev->power.early_init) {
6 		spin_lock_init(&dev->power.lock);
7 		dev->power.qos = NULL;
8 		dev->power.early_init = true;
9 	}
10 }
11 
12 #ifdef CONFIG_PM
13 
14 static inline void pm_runtime_early_init(struct device *dev)
15 {
16 	dev->power.disable_depth = 1;
17 	device_pm_init_common(dev);
18 }
19 
20 extern void pm_runtime_init(struct device *dev);
21 extern void pm_runtime_reinit(struct device *dev);
22 extern void pm_runtime_remove(struct device *dev);
23 
24 #define WAKE_IRQ_DEDICATED_ALLOCATED	BIT(0)
25 #define WAKE_IRQ_DEDICATED_MANAGED	BIT(1)
26 #define WAKE_IRQ_DEDICATED_MASK		(WAKE_IRQ_DEDICATED_ALLOCATED | \
27 					 WAKE_IRQ_DEDICATED_MANAGED)
28 
29 struct wake_irq {
30 	struct device *dev;
31 	unsigned int status;
32 	int irq;
33 };
34 
35 extern void dev_pm_arm_wake_irq(struct wake_irq *wirq);
36 extern void dev_pm_disarm_wake_irq(struct wake_irq *wirq);
37 extern void dev_pm_enable_wake_irq_check(struct device *dev,
38 					 bool can_change_status);
39 extern void dev_pm_disable_wake_irq_check(struct device *dev);
40 
41 #ifdef CONFIG_PM_SLEEP
42 
43 extern int device_wakeup_attach_irq(struct device *dev,
44 				    struct wake_irq *wakeirq);
45 extern void device_wakeup_detach_irq(struct device *dev);
46 extern void device_wakeup_arm_wake_irqs(void);
47 extern void device_wakeup_disarm_wake_irqs(void);
48 
49 #else
50 
51 static inline int
52 device_wakeup_attach_irq(struct device *dev,
53 			 struct wake_irq *wakeirq)
54 {
55 	return 0;
56 }
57 
58 static inline void device_wakeup_detach_irq(struct device *dev)
59 {
60 }
61 
62 static inline void device_wakeup_arm_wake_irqs(void)
63 {
64 }
65 
66 static inline void device_wakeup_disarm_wake_irqs(void)
67 {
68 }
69 
70 #endif /* CONFIG_PM_SLEEP */
71 
72 /*
73  * sysfs.c
74  */
75 
76 extern int dpm_sysfs_add(struct device *dev);
77 extern void dpm_sysfs_remove(struct device *dev);
78 extern void rpm_sysfs_remove(struct device *dev);
79 extern int wakeup_sysfs_add(struct device *dev);
80 extern void wakeup_sysfs_remove(struct device *dev);
81 extern int pm_qos_sysfs_add_resume_latency(struct device *dev);
82 extern void pm_qos_sysfs_remove_resume_latency(struct device *dev);
83 extern int pm_qos_sysfs_add_flags(struct device *dev);
84 extern void pm_qos_sysfs_remove_flags(struct device *dev);
85 extern int pm_qos_sysfs_add_latency_tolerance(struct device *dev);
86 extern void pm_qos_sysfs_remove_latency_tolerance(struct device *dev);
87 
88 #else /* CONFIG_PM */
89 
90 static inline void pm_runtime_early_init(struct device *dev)
91 {
92 	device_pm_init_common(dev);
93 }
94 
95 static inline void pm_runtime_init(struct device *dev) {}
96 static inline void pm_runtime_reinit(struct device *dev) {}
97 static inline void pm_runtime_remove(struct device *dev) {}
98 
99 static inline int dpm_sysfs_add(struct device *dev) { return 0; }
100 static inline void dpm_sysfs_remove(struct device *dev) {}
101 static inline void rpm_sysfs_remove(struct device *dev) {}
102 static inline int wakeup_sysfs_add(struct device *dev) { return 0; }
103 static inline void wakeup_sysfs_remove(struct device *dev) {}
104 static inline int pm_qos_sysfs_add(struct device *dev) { return 0; }
105 static inline void pm_qos_sysfs_remove(struct device *dev) {}
106 
107 static inline void dev_pm_arm_wake_irq(struct wake_irq *wirq)
108 {
109 }
110 
111 static inline void dev_pm_disarm_wake_irq(struct wake_irq *wirq)
112 {
113 }
114 
115 static inline void dev_pm_enable_wake_irq_check(struct device *dev,
116 						bool can_change_status)
117 {
118 }
119 
120 static inline void dev_pm_disable_wake_irq_check(struct device *dev)
121 {
122 }
123 
124 #endif
125 
126 #ifdef CONFIG_PM_SLEEP
127 
128 /* kernel/power/main.c */
129 extern int pm_async_enabled;
130 
131 /* drivers/base/power/main.c */
132 extern struct list_head dpm_list;	/* The active device list */
133 
134 static inline struct device *to_device(struct list_head *entry)
135 {
136 	return container_of(entry, struct device, power.entry);
137 }
138 
139 extern void device_pm_sleep_init(struct device *dev);
140 extern void device_pm_add(struct device *);
141 extern void device_pm_remove(struct device *);
142 extern void device_pm_move_before(struct device *, struct device *);
143 extern void device_pm_move_after(struct device *, struct device *);
144 extern void device_pm_move_last(struct device *);
145 extern void device_pm_check_callbacks(struct device *dev);
146 
147 static inline bool device_pm_initialized(struct device *dev)
148 {
149 	return dev->power.in_dpm_list;
150 }
151 
152 #else /* !CONFIG_PM_SLEEP */
153 
154 static inline void device_pm_sleep_init(struct device *dev) {}
155 
156 static inline void device_pm_add(struct device *dev) {}
157 
158 static inline void device_pm_remove(struct device *dev)
159 {
160 	pm_runtime_remove(dev);
161 }
162 
163 static inline void device_pm_move_before(struct device *deva,
164 					 struct device *devb) {}
165 static inline void device_pm_move_after(struct device *deva,
166 					struct device *devb) {}
167 static inline void device_pm_move_last(struct device *dev) {}
168 
169 static inline void device_pm_check_callbacks(struct device *dev) {}
170 
171 static inline bool device_pm_initialized(struct device *dev)
172 {
173 	return device_is_registered(dev);
174 }
175 
176 #endif /* !CONFIG_PM_SLEEP */
177 
178 static inline void device_pm_init(struct device *dev)
179 {
180 	device_pm_init_common(dev);
181 	device_pm_sleep_init(dev);
182 	pm_runtime_init(dev);
183 }
184