source: rtems-libbsd/rtemsbsd/powerpc/include/linux/of.h @ 44fca38

55-freebsd-126-freebsd-12
Last change on this file since 44fca38 was 44fca38, checked in by Sebastian Huber <sebastian.huber@…>, on Jan 17, 2018 at 1:14:10 PM

linux/of.h: Add of_read_number()

Update #3277.

  • Property mode set to 100644
File size: 3.2 KB
Line 
1/*
2 * Copyright (c) 2015, 2017 embedded brains GmbH
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef _LINUX_OF_H
28#define _LINUX_OF_H
29
30#include <linux/types.h>
31
32#include <libfdt.h>
33
34#ifdef __cplusplus
35extern "C" {
36#endif /* __cplusplus */
37
38typedef uint32_t phandle;
39
40struct device_node {
41        int offset;
42        const char *full_name;
43};
44
45static inline struct device_node *
46of_node_get(struct device_node *dn)
47{
48
49        return (dn);
50}
51
52static inline void
53of_node_put(struct device_node *dn)
54{
55
56        (void)dn;
57}
58
59const void *of_get_property(const struct device_node *dn, const char *name,
60    int *len);
61
62int of_n_addr_cells(struct device_node *dn);
63
64int of_n_size_cells(struct device_node *dn);
65
66/* FIXME: If we need the property, then more work is to do */
67#define of_find_property(dn, name, len) of_get_property(dn, name, len)
68
69int of_property_read_u32_array(const struct device_node *dn, const char *name,
70    u32 *vals, size_t nz);
71
72static inline int
73of_property_read_u32(const struct device_node *dn, const char *name, u32 *val)
74{
75
76        return (of_property_read_u32_array(dn, name, val, 1));
77}
78
79uint64_t of_read_number(const uint32_t *cell, int size);
80
81struct device_node *of_parse_phandle(struct device_node *dns,
82    struct device_node *dn, const char *phandle_name, int index);
83
84int of_count_phandle_with_args(struct device_node *dn, const char *list_name,
85    const char *cells_name);
86
87bool of_device_is_available(const struct device_node *dn);
88
89int of_device_is_compatible(const struct device_node *dn, const char *name);
90
91struct device_node *of_find_compatible_node(struct device_node *dns,
92    const struct device_node *dn, const char *type, const char *compatible);
93
94#define for_each_compatible_node(dn, type, compatible) \
95    for (dn = of_find_compatible_node(&of_dns, NULL, type, compatible); \
96    dn != NULL; dn = of_find_compatible_node(&of_dns, dn, type, compatible))
97
98#ifdef __cplusplus
99}
100#endif /* __cplusplus */
101
102#endif /* _LINUX_OF_H */
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