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https://git.rtems.org/rtems-libbsd/
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108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/*
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* Copyright (c) 2015, 2018 embedded brains GmbH
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUX_OF_H
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#define _LINUX_OF_H
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#include <linux/types.h>
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#include <libfdt.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define OF_BAD_ADDR ((uint64_t)-1)
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typedef uint32_t phandle;
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struct device_node {
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int offset;
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const char *full_name;
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};
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static inline struct device_node *
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of_node_get(struct device_node *dn)
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{
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return (dn);
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}
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static inline void
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of_node_put(struct device_node *dn)
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{
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(void)dn;
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}
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const void *of_get_property(const struct device_node *dn, const char *name,
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int *len);
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int of_n_addr_cells(struct device_node *dn);
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int of_n_size_cells(struct device_node *dn);
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/* FIXME: If we need the property, then more work is to do */
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#define of_find_property(dn, name, len) of_get_property(dn, name, len)
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int of_property_read_u32_array(const struct device_node *dn, const char *name,
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u32 *vals, size_t nz);
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static inline int
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of_property_read_u32(const struct device_node *dn, const char *name, u32 *val)
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{
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return (of_property_read_u32_array(dn, name, val, 1));
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}
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uint64_t of_read_number(const uint32_t *cell, int size);
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struct device_node *of_parse_phandle(struct device_node *dns,
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struct device_node *dn, const char *phandle_name, int index);
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int of_count_phandle_with_args(struct device_node *dn, const char *list_name,
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const char *cells_name);
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bool of_device_is_available(const struct device_node *dn);
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int of_device_is_compatible(const struct device_node *dn, const char *name);
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struct device_node *of_find_node_by_path(struct device_node *dns,
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const char *path);
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struct device_node *of_find_compatible_node(struct device_node *dns,
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const struct device_node *dn, const char *type, const char *compatible);
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#define for_each_compatible_node(dn, type, compatible) \
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for (dn = of_find_compatible_node(&of_dns, NULL, type, compatible); \
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dn != NULL; dn = of_find_compatible_node(&of_dns, dn, type, compatible))
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* _LINUX_OF_H */
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