drivers/gpu/drm/amd/display/dc/dc_stream_priv.h

   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_