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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 | ||
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 | ||
43 | static inline bool device_property_read_bool(struct device *dev, | |
44 | const char *propname) | |
45 | { | |
46 | return device_property_present(dev, propname); | |
47 | } | |
48 | ||
49 | static inline int device_property_read_u8(struct device *dev, | |
50 | const char *propname, u8 *val) | |
51 | { | |
52 | return device_property_read_u8_array(dev, propname, val, 1); | |
53 | } | |
54 | ||
55 | static inline int device_property_read_u16(struct device *dev, | |
56 | const char *propname, u16 *val) | |
57 | { | |
58 | return device_property_read_u16_array(dev, propname, val, 1); | |
59 | } | |
60 | ||
61 | static inline int device_property_read_u32(struct device *dev, | |
62 | const char *propname, u32 *val) | |
63 | { | |
64 | return device_property_read_u32_array(dev, propname, val, 1); | |
65 | } | |
66 | ||
67 | static inline int device_property_read_u64(struct device *dev, | |
68 | const char *propname, u64 *val) | |
69 | { | |
70 | return device_property_read_u64_array(dev, propname, val, 1); | |
71 | } | |
72 | ||
73 | #endif /* _LINUX_PROPERTY_H_ */ |