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c3cf06f1a3
All identifiers, regardless of use, that start with two underscores are reserved. This means they can't be used in header guards. The style that this project is now to use the full name of the file in capital letters followed by 'H'. For example, for a file called "uart_example.h", the header guard is UART_EXAMPLE_H. The exceptions are files that are imported from other projects: - CryptoCell driver - dt-bindings folders - zlib headers Change-Id: I50561bf6c88b491ec440d0c8385c74650f3c106e Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
24 lines
784 B
C
24 lines
784 B
C
/*
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* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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/* Helper functions to offer easier navigation of Device Tree Blob */
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#ifndef FDT_WRAPPERS_H
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#define FDT_WRAPPERS_H
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/* Number of cells, given total length in bytes. Each cell is 4 bytes long */
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#define NCELLS(len) ((len) / 4U)
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int fdtw_read_cells(const void *dtb, int node, const char *prop,
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unsigned int cells, void *value);
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int fdtw_read_array(const void *dtb, int node, const char *prop,
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unsigned int cells, void *value);
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int fdtw_read_string(const void *dtb, int node, const char *prop,
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char *str, size_t size);
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int fdtw_write_inplace_cells(void *dtb, int node, const char *prop,
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unsigned int cells, void *value);
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#endif /* FDT_WRAPPERS_H */
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