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9c92ab61 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
176aa360 CC |
2 | /* |
3 | * External Connector (extcon) framework | |
4 | * - linux/include/linux/extcon-provider.h for extcon provider device driver. | |
5 | * | |
6 | * Copyright (C) 2017 Samsung Electronics | |
7 | * Author: Chanwoo Choi <cw00.choi@samsung.com> | |
176aa360 CC |
8 | */ |
9 | ||
10 | #ifndef __LINUX_EXTCON_PROVIDER_H__ | |
11 | #define __LINUX_EXTCON_PROVIDER_H__ | |
12 | ||
13 | #include <linux/extcon.h> | |
14 | ||
15 | struct extcon_dev; | |
16 | ||
17 | #if IS_ENABLED(CONFIG_EXTCON) | |
18 | ||
19 | /* Following APIs register/unregister the extcon device. */ | |
20 | extern int extcon_dev_register(struct extcon_dev *edev); | |
21 | extern void extcon_dev_unregister(struct extcon_dev *edev); | |
22 | extern int devm_extcon_dev_register(struct device *dev, | |
23 | struct extcon_dev *edev); | |
24 | extern void devm_extcon_dev_unregister(struct device *dev, | |
25 | struct extcon_dev *edev); | |
26 | ||
27 | /* Following APIs allocate/free the memory of the extcon device. */ | |
28 | extern struct extcon_dev *extcon_dev_allocate(const unsigned int *cable); | |
29 | extern void extcon_dev_free(struct extcon_dev *edev); | |
30 | extern struct extcon_dev *devm_extcon_dev_allocate(struct device *dev, | |
31 | const unsigned int *cable); | |
32 | extern void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev); | |
33 | ||
34 | /* Synchronize the state and property value for each external connector. */ | |
35 | extern int extcon_sync(struct extcon_dev *edev, unsigned int id); | |
36 | ||
37 | /* | |
38 | * Following APIs set the connected state of each external connector. | |
39 | * The 'id' argument indicates the defined external connector. | |
40 | */ | |
41 | extern int extcon_set_state(struct extcon_dev *edev, unsigned int id, | |
42 | bool state); | |
43 | extern int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id, | |
44 | bool state); | |
45 | ||
46 | /* | |
47 | * Following APIs set the property of each external connector. | |
48 | * The 'id' argument indicates the defined external connector | |
49 | * and the 'prop' indicates the extcon property. | |
50 | * | |
51 | * And extcon_set_property_capability() set the capability of the property | |
52 | * for each external connector. They are used to set the capability of the | |
53 | * property of each external connector based on the id and property. | |
54 | */ | |
55 | extern int extcon_set_property(struct extcon_dev *edev, unsigned int id, | |
56 | unsigned int prop, | |
57 | union extcon_property_value prop_val); | |
58 | extern int extcon_set_property_sync(struct extcon_dev *edev, unsigned int id, | |
59 | unsigned int prop, | |
60 | union extcon_property_value prop_val); | |
61 | extern int extcon_set_property_capability(struct extcon_dev *edev, | |
62 | unsigned int id, unsigned int prop); | |
63 | ||
64 | #else /* CONFIG_EXTCON */ | |
65 | static inline int extcon_dev_register(struct extcon_dev *edev) | |
66 | { | |
67 | return 0; | |
68 | } | |
69 | ||
70 | static inline void extcon_dev_unregister(struct extcon_dev *edev) { } | |
71 | ||
72 | static inline int devm_extcon_dev_register(struct device *dev, | |
73 | struct extcon_dev *edev) | |
74 | { | |
75 | return -EINVAL; | |
76 | } | |
77 | ||
78 | static inline void devm_extcon_dev_unregister(struct device *dev, | |
79 | struct extcon_dev *edev) { } | |
80 | ||
81 | static inline struct extcon_dev *extcon_dev_allocate(const unsigned int *cable) | |
82 | { | |
83 | return ERR_PTR(-ENOSYS); | |
84 | } | |
85 | ||
86 | static inline void extcon_dev_free(struct extcon_dev *edev) { } | |
87 | ||
88 | static inline struct extcon_dev *devm_extcon_dev_allocate(struct device *dev, | |
89 | const unsigned int *cable) | |
90 | { | |
91 | return ERR_PTR(-ENOSYS); | |
92 | } | |
93 | ||
94 | static inline void devm_extcon_dev_free(struct extcon_dev *edev) { } | |
95 | ||
96 | ||
97 | static inline int extcon_set_state(struct extcon_dev *edev, unsigned int id, | |
98 | bool state) | |
99 | { | |
100 | return 0; | |
101 | } | |
102 | ||
103 | static inline int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id, | |
104 | bool state) | |
105 | { | |
106 | return 0; | |
107 | } | |
108 | ||
109 | static inline int extcon_sync(struct extcon_dev *edev, unsigned int id) | |
110 | { | |
111 | return 0; | |
112 | } | |
113 | ||
114 | static inline int extcon_set_property(struct extcon_dev *edev, unsigned int id, | |
115 | unsigned int prop, | |
116 | union extcon_property_value prop_val) | |
117 | { | |
118 | return 0; | |
119 | } | |
120 | ||
121 | static inline int extcon_set_property_sync(struct extcon_dev *edev, | |
122 | unsigned int id, unsigned int prop, | |
123 | union extcon_property_value prop_val) | |
124 | { | |
125 | return 0; | |
126 | } | |
127 | ||
128 | static inline int extcon_set_property_capability(struct extcon_dev *edev, | |
129 | unsigned int id, unsigned int prop) | |
130 | { | |
131 | return 0; | |
132 | } | |
133 | #endif /* CONFIG_EXTCON */ | |
134 | #endif /* __LINUX_EXTCON_PROVIDER_H__ */ |