1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Functions private to power supply class
4 *
5 * Copyright © 2007 Anton Vorontsov <[email protected]>
6 * Copyright © 2004 Szabolcs Gyurko
7 * Copyright © 2003 Ian Molton <[email protected]>
8 *
9 * Modified: 2004, Oct Szabolcs Gyurko
10 */
11
12 #include <linux/lockdep.h>
13
14 struct device;
15 struct device_type;
16 struct power_supply;
17
18 extern int power_supply_property_is_writeable(struct power_supply *psy,
19 enum power_supply_property psp);
20 extern bool power_supply_has_property(struct power_supply *psy,
21 enum power_supply_property psp);
22 extern bool power_supply_ext_has_property(const struct power_supply_ext *ext,
23 enum power_supply_property psp);
24
25 struct power_supply_ext_registration {
26 struct list_head list_head;
27 const struct power_supply_ext *ext;
28 struct device *dev;
29 void *data;
30 };
31
32 /* Make sure that the macro is a single expression */
33 #define power_supply_for_each_extension(pos, psy) \
34 if ( ({ lockdep_assert_held(&(psy)->extensions_sem); 0; }) ) \
35 ; \
36 else \
37 list_for_each_entry(pos, &(psy)->extensions, list_head) \
38
39 #ifdef CONFIG_SYSFS
40
41 extern void __init power_supply_init_attrs(void);
42 extern int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *env);
43 extern const struct attribute_group *power_supply_attr_groups[];
44 extern int power_supply_sysfs_add_extension(struct power_supply *psy,
45 const struct power_supply_ext *ext,
46 struct device *dev);
47 extern void power_supply_sysfs_remove_extension(struct power_supply *psy,
48 const struct power_supply_ext *ext);
49
50 #else
51
power_supply_init_attrs(void)52 static inline void power_supply_init_attrs(void) {}
53 #define power_supply_attr_groups NULL
54 #define power_supply_uevent NULL
power_supply_sysfs_add_extension(struct power_supply * psy,const struct power_supply_ext * ext,struct device * dev)55 static inline int power_supply_sysfs_add_extension(struct power_supply *psy,
56 const struct power_supply_ext *ext,
57 struct device *dev)
58 { return 0; }
power_supply_sysfs_remove_extension(struct power_supply * psy,const struct power_supply_ext * ext)59 static inline void power_supply_sysfs_remove_extension(struct power_supply *psy,
60 const struct power_supply_ext *ext) {}
61
62 #endif /* CONFIG_SYSFS */
63
64 #ifdef CONFIG_LEDS_TRIGGERS
65
66 extern void power_supply_update_leds(struct power_supply *psy);
67 extern int power_supply_create_triggers(struct power_supply *psy);
68 extern void power_supply_remove_triggers(struct power_supply *psy);
69
70 #else
71
power_supply_update_leds(struct power_supply * psy)72 static inline void power_supply_update_leds(struct power_supply *psy) {}
power_supply_create_triggers(struct power_supply * psy)73 static inline int power_supply_create_triggers(struct power_supply *psy)
74 { return 0; }
power_supply_remove_triggers(struct power_supply * psy)75 static inline void power_supply_remove_triggers(struct power_supply *psy) {}
76
77 #endif /* CONFIG_LEDS_TRIGGERS */
78
79 #ifdef CONFIG_POWER_SUPPLY_HWMON
80
81 int power_supply_add_hwmon_sysfs(struct power_supply *psy);
82 void power_supply_remove_hwmon_sysfs(struct power_supply *psy);
83
84 #else
85
power_supply_add_hwmon_sysfs(struct power_supply * psy)86 static inline int power_supply_add_hwmon_sysfs(struct power_supply *psy)
87 {
88 return 0;
89 }
90
91 static inline
power_supply_remove_hwmon_sysfs(struct power_supply * psy)92 void power_supply_remove_hwmon_sysfs(struct power_supply *psy) {}
93
94 #endif /* CONFIG_POWER_SUPPLY_HWMON */
95