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