1/*
2 * Copyright © 2021 Google, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 */
23
24#ifndef FREEDRENO_DT_H_
25#define FREEDRENO_DT_H_
26
27#include <stdbool.h>
28#include <stdint.h>
29
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34/**
35 * A helper for extracting information about the GPU from devicetree, and
36 * mapping it's i/o space, etc.
37 *
38 * Note, not-reentrant (due to use of nftw(), etc).
39 */
40
41bool fd_dt_find_freqs(uint32_t *min_freq, uint32_t *max_freq);
42void *fd_dt_find_io(void);
43
44#ifdef __cplusplus
45} /* end of extern "C" */
46#endif
47
48#endif /* FREEDRENO_DT_H_ */
49