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1 /*
2  * Copyright © 2013 Intel Corporation
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
20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21  * IN THE SOFTWARE.
22  *
23  */
24 
25 #ifndef GPU_FREQ_H
26 #define GPU_FREQ_H
27 
28 #include <stdint.h>
29 
30 struct gpu_freq {
31 	struct gpu_freq_stat {
32 		uint64_t act, req;
33 		uint64_t timestamp;
34 	} stat[2];
35 	int fd;
36 	int count;
37 	int is_byt;
38 	int min, max;
39 	int rpn, rp1, rp0;
40 	int request;
41 	int current;
42 	int error;
43 };
44 
45 int gpu_freq_init(struct gpu_freq *gf);
46 int gpu_freq_update(struct gpu_freq *gf);
47 
48 #endif /* GPU_FREQ_H */
49