projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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_ */ |