1 /* 2 * Copyright 2023 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 _DC_STREAM_PRIV_H_ 27 #define _DC_STREAM_PRIV_H_ 28 29 #include "dc_stream.h" 30 31 bool dc_stream_construct(struct dc_stream_state *stream, 32 struct dc_sink *dc_sink_data); 33 void dc_stream_destruct(struct dc_stream_state *stream); 34 35 void dc_stream_assign_stream_id(struct dc_stream_state *stream); 36 37 /* 38 * Finds the highest refresh rate that can be achieved 39 * from starting_freq while staying within flicker criteria 40 */ 41 int dc_stream_calculate_max_flickerless_refresh_rate(struct dc_stream_state *stream, 42 int starting_refresh_hz, 43 bool is_gaming); 44 45 /* 46 * Finds the lowest refresh rate that can be achieved 47 * from starting_freq while staying within flicker criteria 48 */ 49 int dc_stream_calculate_min_flickerless_refresh_rate(struct dc_stream_state *stream, 50 int starting_refresh_hz, 51 bool is_gaming); 52 53 /* 54 * Determines if there will be a flicker when moving between 2 refresh rates 55 */ 56 bool dc_stream_is_refresh_rate_range_flickerless(struct dc_stream_state *stream, 57 int hz1, 58 int hz2, 59 bool is_gaming); 60 61 /* 62 * Determines the max instant vtotal delta increase that can be applied without 63 * flickering for a given stream 64 */ 65 unsigned int dc_stream_get_max_flickerless_instant_vtotal_decrease(struct dc_stream_state *stream, 66 bool is_gaming); 67 68 /* 69 * Determines the max instant vtotal delta decrease that can be applied without 70 * flickering for a given stream 71 */ 72 unsigned int dc_stream_get_max_flickerless_instant_vtotal_increase(struct dc_stream_state *stream, 73 bool is_gaming); 74 75 #endif // _DC_STREAM_PRIV_H_ 76