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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 | ||
ce793486 | 16 | #include <linux/fwnode.h> |
b31384fa RW |
17 | #include <linux/types.h> |
18 | ||
19 | struct device; | |
20 | ||
21 | enum dev_prop_type { | |
22 | DEV_PROP_U8, | |
23 | DEV_PROP_U16, | |
24 | DEV_PROP_U32, | |
25 | DEV_PROP_U64, | |
26 | DEV_PROP_STRING, | |
27 | DEV_PROP_MAX, | |
28 | }; | |
29 | ||
30 | bool device_property_present(struct device *dev, const char *propname); | |
31 | int device_property_read_u8_array(struct device *dev, const char *propname, | |
32 | u8 *val, size_t nval); | |
33 | int device_property_read_u16_array(struct device *dev, const char *propname, | |
34 | u16 *val, size_t nval); | |
35 | int device_property_read_u32_array(struct device *dev, const char *propname, | |
36 | u32 *val, size_t nval); | |
37 | int device_property_read_u64_array(struct device *dev, const char *propname, | |
38 | u64 *val, size_t nval); | |
39 | int device_property_read_string_array(struct device *dev, const char *propname, | |
40 | const char **val, size_t nval); | |
41 | int device_property_read_string(struct device *dev, const char *propname, | |
42 | const char **val); | |
43 | ||
8a0662d9 RW |
44 | bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname); |
45 | int fwnode_property_read_u8_array(struct fwnode_handle *fwnode, | |
46 | const char *propname, u8 *val, | |
47 | size_t nval); | |
48 | int fwnode_property_read_u16_array(struct fwnode_handle *fwnode, | |
49 | const char *propname, u16 *val, | |
50 | size_t nval); | |
51 | int fwnode_property_read_u32_array(struct fwnode_handle *fwnode, | |
52 | const char *propname, u32 *val, | |
53 | size_t nval); | |
54 | int fwnode_property_read_u64_array(struct fwnode_handle *fwnode, | |
55 | const char *propname, u64 *val, | |
56 | size_t nval); | |
57 | int fwnode_property_read_string_array(struct fwnode_handle *fwnode, | |
58 | const char *propname, const char **val, | |
59 | size_t nval); | |
60 | int fwnode_property_read_string(struct fwnode_handle *fwnode, | |
61 | const char *propname, const char **val); | |
62 | ||
63 | struct fwnode_handle *device_get_next_child_node(struct device *dev, | |
64 | struct fwnode_handle *child); | |
65 | ||
66 | #define device_for_each_child_node(dev, child) \ | |
67 | for (child = device_get_next_child_node(dev, NULL); child; \ | |
68 | child = device_get_next_child_node(dev, child)) | |
69 | ||
70 | void fwnode_handle_put(struct fwnode_handle *fwnode); | |
71 | ||
72 | unsigned int device_get_child_node_count(struct device *dev); | |
73 | ||
b31384fa RW |
74 | static inline bool device_property_read_bool(struct device *dev, |
75 | const char *propname) | |
76 | { | |
77 | return device_property_present(dev, propname); | |
78 | } | |
79 | ||
80 | static inline int device_property_read_u8(struct device *dev, | |
81 | const char *propname, u8 *val) | |
82 | { | |
83 | return device_property_read_u8_array(dev, propname, val, 1); | |
84 | } | |
85 | ||
86 | static inline int device_property_read_u16(struct device *dev, | |
87 | const char *propname, u16 *val) | |
88 | { | |
89 | return device_property_read_u16_array(dev, propname, val, 1); | |
90 | } | |
91 | ||
92 | static inline int device_property_read_u32(struct device *dev, | |
93 | const char *propname, u32 *val) | |
94 | { | |
95 | return device_property_read_u32_array(dev, propname, val, 1); | |
96 | } | |
97 | ||
98 | static inline int device_property_read_u64(struct device *dev, | |
99 | const char *propname, u64 *val) | |
100 | { | |
101 | return device_property_read_u64_array(dev, propname, val, 1); | |
102 | } | |
103 | ||
8a0662d9 RW |
104 | static inline bool fwnode_property_read_bool(struct fwnode_handle *fwnode, |
105 | const char *propname) | |
106 | { | |
107 | return fwnode_property_present(fwnode, propname); | |
108 | } | |
109 | ||
110 | static inline int fwnode_property_read_u8(struct fwnode_handle *fwnode, | |
111 | const char *propname, u8 *val) | |
112 | { | |
113 | return fwnode_property_read_u8_array(fwnode, propname, val, 1); | |
114 | } | |
115 | ||
116 | static inline int fwnode_property_read_u16(struct fwnode_handle *fwnode, | |
117 | const char *propname, u16 *val) | |
118 | { | |
119 | return fwnode_property_read_u16_array(fwnode, propname, val, 1); | |
120 | } | |
121 | ||
122 | static inline int fwnode_property_read_u32(struct fwnode_handle *fwnode, | |
123 | const char *propname, u32 *val) | |
124 | { | |
125 | return fwnode_property_read_u32_array(fwnode, propname, val, 1); | |
126 | } | |
127 | ||
128 | static inline int fwnode_property_read_u64(struct fwnode_handle *fwnode, | |
129 | const char *propname, u64 *val) | |
130 | { | |
131 | return fwnode_property_read_u64_array(fwnode, propname, val, 1); | |
132 | } | |
133 | ||
16ba08d5 RW |
134 | /** |
135 | * struct property_entry - "Built-in" device property representation. | |
136 | * @name: Name of the property. | |
137 | * @type: Type of the property. | |
138 | * @nval: Number of items of type @type making up the value. | |
139 | * @value: Value of the property (an array of @nval items of type @type). | |
140 | */ | |
141 | struct property_entry { | |
142 | const char *name; | |
143 | enum dev_prop_type type; | |
144 | size_t nval; | |
145 | union { | |
146 | void *raw_data; | |
147 | u8 *u8_data; | |
148 | u16 *u16_data; | |
149 | u32 *u32_data; | |
150 | u64 *u64_data; | |
151 | const char **str; | |
152 | } value; | |
153 | }; | |
154 | ||
155 | /** | |
156 | * struct property_set - Collection of "built-in" device properties. | |
157 | * @fwnode: Handle to be pointed to by the fwnode field of struct device. | |
158 | * @properties: Array of properties terminated with a null entry. | |
159 | */ | |
160 | struct property_set { | |
161 | struct fwnode_handle fwnode; | |
162 | struct property_entry *properties; | |
163 | }; | |
164 | ||
165 | void device_add_property_set(struct device *dev, struct property_set *pset); | |
166 | ||
05ca5560 SS |
167 | bool device_dma_is_coherent(struct device *dev); |
168 | ||
4c96b7dc JL |
169 | int device_get_phy_mode(struct device *dev); |
170 | ||
171 | void *device_get_mac_address(struct device *dev, char *addr, int alen); | |
172 | ||
b31384fa | 173 | #endif /* _LINUX_PROPERTY_H_ */ |