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b31384fa RW |
1 | /* |
2 | * property.h - Unified device property interface. | |
3 | * | |
4 | * Copyright (C) 2014, Intel Corporation | |
5 | * Authors: Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
6 | * Mika Westerberg <mika.westerberg@linux.intel.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #ifndef _LINUX_PROPERTY_H_ | |
14 | #define _LINUX_PROPERTY_H_ | |
15 | ||
16 | #include <linux/types.h> | |
17 | ||
18 | struct device; | |
19 | ||
20 | enum dev_prop_type { | |
21 | DEV_PROP_U8, | |
22 | DEV_PROP_U16, | |
23 | DEV_PROP_U32, | |
24 | DEV_PROP_U64, | |
25 | DEV_PROP_STRING, | |
26 | DEV_PROP_MAX, | |
27 | }; | |
28 | ||
29 | bool device_property_present(struct device *dev, const char *propname); | |
30 | int device_property_read_u8_array(struct device *dev, const char *propname, | |
31 | u8 *val, size_t nval); | |
32 | int device_property_read_u16_array(struct device *dev, const char *propname, | |
33 | u16 *val, size_t nval); | |
34 | int device_property_read_u32_array(struct device *dev, const char *propname, | |
35 | u32 *val, size_t nval); | |
36 | int device_property_read_u64_array(struct device *dev, const char *propname, | |
37 | u64 *val, size_t nval); | |
38 | int device_property_read_string_array(struct device *dev, const char *propname, | |
39 | const char **val, size_t nval); | |
40 | int device_property_read_string(struct device *dev, const char *propname, | |
41 | const char **val); | |
42 | ||
8a0662d9 RW |
43 | enum fwnode_type { |
44 | FWNODE_INVALID = 0, | |
45 | FWNODE_OF, | |
46 | FWNODE_ACPI, | |
47 | }; | |
48 | ||
49 | struct fwnode_handle { | |
50 | enum fwnode_type type; | |
51 | }; | |
52 | ||
53 | bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname); | |
54 | int fwnode_property_read_u8_array(struct fwnode_handle *fwnode, | |
55 | const char *propname, u8 *val, | |
56 | size_t nval); | |
57 | int fwnode_property_read_u16_array(struct fwnode_handle *fwnode, | |
58 | const char *propname, u16 *val, | |
59 | size_t nval); | |
60 | int fwnode_property_read_u32_array(struct fwnode_handle *fwnode, | |
61 | const char *propname, u32 *val, | |
62 | size_t nval); | |
63 | int fwnode_property_read_u64_array(struct fwnode_handle *fwnode, | |
64 | const char *propname, u64 *val, | |
65 | size_t nval); | |
66 | int fwnode_property_read_string_array(struct fwnode_handle *fwnode, | |
67 | const char *propname, const char **val, | |
68 | size_t nval); | |
69 | int fwnode_property_read_string(struct fwnode_handle *fwnode, | |
70 | const char *propname, const char **val); | |
71 | ||
72 | struct fwnode_handle *device_get_next_child_node(struct device *dev, | |
73 | struct fwnode_handle *child); | |
74 | ||
75 | #define device_for_each_child_node(dev, child) \ | |
76 | for (child = device_get_next_child_node(dev, NULL); child; \ | |
77 | child = device_get_next_child_node(dev, child)) | |
78 | ||
79 | void fwnode_handle_put(struct fwnode_handle *fwnode); | |
80 | ||
81 | unsigned int device_get_child_node_count(struct device *dev); | |
82 | ||
b31384fa RW |
83 | static inline bool device_property_read_bool(struct device *dev, |
84 | const char *propname) | |
85 | { | |
86 | return device_property_present(dev, propname); | |
87 | } | |
88 | ||
89 | static inline int device_property_read_u8(struct device *dev, | |
90 | const char *propname, u8 *val) | |
91 | { | |
92 | return device_property_read_u8_array(dev, propname, val, 1); | |
93 | } | |
94 | ||
95 | static inline int device_property_read_u16(struct device *dev, | |
96 | const char *propname, u16 *val) | |
97 | { | |
98 | return device_property_read_u16_array(dev, propname, val, 1); | |
99 | } | |
100 | ||
101 | static inline int device_property_read_u32(struct device *dev, | |
102 | const char *propname, u32 *val) | |
103 | { | |
104 | return device_property_read_u32_array(dev, propname, val, 1); | |
105 | } | |
106 | ||
107 | static inline int device_property_read_u64(struct device *dev, | |
108 | const char *propname, u64 *val) | |
109 | { | |
110 | return device_property_read_u64_array(dev, propname, val, 1); | |
111 | } | |
112 | ||
8a0662d9 RW |
113 | static inline bool fwnode_property_read_bool(struct fwnode_handle *fwnode, |
114 | const char *propname) | |
115 | { | |
116 | return fwnode_property_present(fwnode, propname); | |
117 | } | |
118 | ||
119 | static inline int fwnode_property_read_u8(struct fwnode_handle *fwnode, | |
120 | const char *propname, u8 *val) | |
121 | { | |
122 | return fwnode_property_read_u8_array(fwnode, propname, val, 1); | |
123 | } | |
124 | ||
125 | static inline int fwnode_property_read_u16(struct fwnode_handle *fwnode, | |
126 | const char *propname, u16 *val) | |
127 | { | |
128 | return fwnode_property_read_u16_array(fwnode, propname, val, 1); | |
129 | } | |
130 | ||
131 | static inline int fwnode_property_read_u32(struct fwnode_handle *fwnode, | |
132 | const char *propname, u32 *val) | |
133 | { | |
134 | return fwnode_property_read_u32_array(fwnode, propname, val, 1); | |
135 | } | |
136 | ||
137 | static inline int fwnode_property_read_u64(struct fwnode_handle *fwnode, | |
138 | const char *propname, u64 *val) | |
139 | { | |
140 | return fwnode_property_read_u64_array(fwnode, propname, val, 1); | |
141 | } | |
142 | ||
b31384fa | 143 | #endif /* _LINUX_PROPERTY_H_ */ |