drivers/gpu/drm/amd/display/dc/dc_edid_parser.c

   1 /*
   2  * Copyright 2021 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 #include "dce/dce_dmcu.h"
  27 #include "dc_edid_parser.h"
  28
  29 bool dc_edid_parser_send_cea(struct dc *dc,
  30                 int offset,
  31                 int total_length,
  32                 uint8_t *data,
  33                 int length)
  34 {
  35         struct dmcu *dmcu = dc->res_pool->dmcu;
  36
  37         if (dmcu &&
  38             dmcu->funcs->is_dmcu_initialized(dmcu) &&
  39             dmcu->funcs->send_edid_cea) {
  40                 return dmcu->funcs->send_edid_cea(dmcu,
  41                                 offset,
  42                                 total_length,
  43                                 data,
  44                                 length);
  45         }
  46
  47         return false;
  48 }
  49
  50 bool dc_edid_parser_recv_cea_ack(struct dc *dc, int *offset)
  51 {
  52         struct dmcu *dmcu = dc->res_pool->dmcu;
  53
  54         if (dmcu &&
  55             dmcu->funcs->is_dmcu_initialized(dmcu) &&
  56             dmcu->funcs->recv_edid_cea_ack) {
  57                 return dmcu->funcs->recv_edid_cea_ack(dmcu, offset);
  58         }
  59
  60         return false;
  61 }
  62
  63 bool dc_edid_parser_recv_amd_vsdb(struct dc *dc,
  64                 int *version,
  65                 int *min_frame_rate,
  66                 int *max_frame_rate)
  67 {
  68         struct dmcu *dmcu = dc->res_pool->dmcu;
  69
  70         if (dmcu &&
  71             dmcu->funcs->is_dmcu_initialized(dmcu) &&
  72             dmcu->funcs->recv_amd_vsdb) {
  73                 return dmcu->funcs->recv_amd_vsdb(dmcu,
  74                                 version,
  75                                 min_frame_rate,
  76                                 max_frame_rate);
  77         }
  78
  79         return false;
  80 }