[28ee86a] | 1 | /* |
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[cd089b9] | 2 | * Copyright (c) 2015, 2017 embedded brains GmbH |
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[28ee86a] | 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * 1. Redistributions of source code must retain the above copyright |
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| 9 | * notice, this list of conditions and the following disclaimer. |
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer in the |
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| 12 | * documentation and/or other materials provided with the distribution. |
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| 13 | * |
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| 14 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| 15 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| 16 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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| 17 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| 18 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 19 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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| 20 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 21 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 22 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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| 24 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 25 | */ |
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| 26 | |
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| 27 | #ifndef _LINUX_OF_H |
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| 28 | #define _LINUX_OF_H |
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| 29 | |
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[cd089b9] | 30 | #include <linux/types.h> |
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[28ee86a] | 31 | |
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| 32 | #include <libfdt.h> |
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| 33 | |
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| 34 | #ifdef __cplusplus |
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| 35 | extern "C" { |
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| 36 | #endif /* __cplusplus */ |
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| 37 | |
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| 38 | typedef uint32_t phandle; |
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| 39 | |
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| 40 | struct device_node { |
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| 41 | int offset; |
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| 42 | const char *full_name; |
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| 43 | }; |
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| 44 | |
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| 45 | static inline struct device_node * |
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| 46 | of_node_get(struct device_node *dn) |
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| 47 | { |
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| 48 | |
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| 49 | return (dn); |
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| 50 | } |
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| 51 | |
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| 52 | static inline void |
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| 53 | of_node_put(struct device_node *dn) |
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| 54 | { |
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| 55 | |
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| 56 | (void)dn; |
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| 57 | } |
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| 58 | |
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| 59 | const void *of_get_property(const struct device_node *dn, const char *name, |
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| 60 | int *len); |
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| 61 | |
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[0d421d8] | 62 | int of_n_addr_cells(struct device_node *dn); |
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| 63 | |
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[26ce2ac] | 64 | int of_n_size_cells(struct device_node *dn); |
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| 65 | |
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[cd089b9] | 66 | /* FIXME: If we need the property, then more work is to do */ |
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| 67 | #define of_find_property(dn, name, len) of_get_property(dn, name, len) |
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| 68 | |
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| 69 | int of_property_read_u32_array(const struct device_node *dn, const char *name, |
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| 70 | u32 *vals, size_t nz); |
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| 71 | |
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| 72 | static inline int |
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| 73 | of_property_read_u32(const struct device_node *dn, const char *name, u32 *val) |
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| 74 | { |
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| 75 | |
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| 76 | return (of_property_read_u32_array(dn, name, val, 1)); |
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| 77 | } |
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| 78 | |
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[44fca38] | 79 | uint64_t of_read_number(const uint32_t *cell, int size); |
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| 80 | |
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[cd089b9] | 81 | struct device_node *of_parse_phandle(struct device_node *dns, |
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| 82 | struct device_node *dn, const char *phandle_name, int index); |
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| 83 | |
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| 84 | int of_count_phandle_with_args(struct device_node *dn, const char *list_name, |
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| 85 | const char *cells_name); |
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| 86 | |
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[28ee86a] | 87 | bool of_device_is_available(const struct device_node *dn); |
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| 88 | |
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| 89 | int of_device_is_compatible(const struct device_node *dn, const char *name); |
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| 90 | |
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| 91 | struct device_node *of_find_compatible_node(struct device_node *dns, |
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| 92 | const struct device_node *dn, const char *type, const char *compatible); |
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| 93 | |
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| 94 | #define for_each_compatible_node(dn, type, compatible) \ |
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| 95 | for (dn = of_find_compatible_node(&of_dns, NULL, type, compatible); \ |
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| 96 | dn != NULL; dn = of_find_compatible_node(&of_dns, dn, type, compatible)) |
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| 97 | |
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| 98 | #ifdef __cplusplus |
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| 99 | } |
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| 100 | #endif /* __cplusplus */ |
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| 101 | |
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| 102 | #endif /* _LINUX_OF_H */ |
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