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