xref: /openbmc/linux/drivers/gpu/drm/amd/display/dc/inc/hw/dccg.h (revision 8795a739)
1 /*
2  * Copyright 2018 Advanced Micro Devices, 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 shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: AMD
23  *
24  */
25 
26 #ifndef __DAL_DCCG_H__
27 #define __DAL_DCCG_H__
28 
29 #include "dc_types.h"
30 
31 struct dccg {
32 	struct dc_context *ctx;
33 	const struct dccg_funcs *funcs;
34 
35 	int ref_dppclk;
36 };
37 
38 struct dccg_funcs {
39 	void (*update_dpp_dto)(struct dccg *dccg,
40 			int dpp_inst,
41 			int req_dppclk,
42 			bool reduce_divider_only);
43 	void (*get_dccg_ref_freq)(struct dccg *dccg,
44 			unsigned int xtalin_freq_inKhz,
45 			unsigned int *dccg_ref_freq_inKhz);
46 	void (*dccg_init)(struct dccg *dccg);
47 };
48 
49 #endif //__DAL_DCCG_H__
50