drivers/gpu/drm/amd/display/dc/basics/dc_common.c

   1 /*
   2  * Copyright 2012-15 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 "core_types.h"
  27 #include "dc_common.h"
  28 #include "basics/conversion.h"
  29
  30 bool is_rgb_cspace(enum dc_color_space output_color_space)
  31 {
  32         switch (output_color_space) {
  33         case COLOR_SPACE_SRGB:
  34         case COLOR_SPACE_SRGB_LIMITED:
  35         case COLOR_SPACE_2020_RGB_FULLRANGE:
  36         case COLOR_SPACE_2020_RGB_LIMITEDRANGE:
  37         case COLOR_SPACE_ADOBERGB:
  38                 return true;
  39         case COLOR_SPACE_YCBCR601:
  40         case COLOR_SPACE_YCBCR709:
  41         case COLOR_SPACE_YCBCR601_LIMITED:
  42         case COLOR_SPACE_YCBCR709_LIMITED:
  43         case COLOR_SPACE_2020_YCBCR:
  44                 return false;
  45         default:
  46                 /* Add a case to switch */
  47                 BREAK_TO_DEBUGGER();
  48                 return false;
  49         }
  50 }
  51
  52 bool is_lower_pipe_tree_visible(struct pipe_ctx *pipe_ctx)
  53 {
  54         if (pipe_ctx->plane_state && pipe_ctx->plane_state->visible)
  55                 return true;
  56         if (pipe_ctx->bottom_pipe && is_lower_pipe_tree_visible(pipe_ctx->bottom_pipe))
  57                 return true;
  58         return false;
  59 }
  60
  61 bool is_upper_pipe_tree_visible(struct pipe_ctx *pipe_ctx)
  62 {
  63         if (pipe_ctx->plane_state && pipe_ctx->plane_state->visible)
  64                 return true;
  65         if (pipe_ctx->top_pipe && is_upper_pipe_tree_visible(pipe_ctx->top_pipe))
  66                 return true;
  67         return false;
  68 }
  69
  70 bool is_pipe_tree_visible(struct pipe_ctx *pipe_ctx)
  71 {
  72         if (pipe_ctx->plane_state && pipe_ctx->plane_state->visible)
  73                 return true;
  74         if (pipe_ctx->top_pipe && is_upper_pipe_tree_visible(pipe_ctx->top_pipe))
  75                 return true;
  76         if (pipe_ctx->bottom_pipe && is_lower_pipe_tree_visible(pipe_ctx->bottom_pipe))
  77                 return true;
  78         return false;
  79 }
  80
  81 void build_prescale_params(struct  dc_bias_and_scale *bias_and_scale,
  82                 const struct dc_plane_state *plane_state)
  83 {
  84         if (plane_state->format >= SURFACE_PIXEL_FORMAT_VIDEO_BEGIN
  85                         && plane_state->format != SURFACE_PIXEL_FORMAT_INVALID
  86                         && plane_state->input_csc_color_matrix.enable_adjustment
  87                         && plane_state->coeff_reduction_factor.value != 0) {
  88                 bias_and_scale->scale_blue = fixed_point_to_int_frac(
  89                         dc_fixpt_mul(plane_state->coeff_reduction_factor,
  90                                         dc_fixpt_from_fraction(256, 255)),
  91                                 2,
  92                                 13);
  93                 bias_and_scale->scale_red = bias_and_scale->scale_blue;
  94                 bias_and_scale->scale_green = bias_and_scale->scale_blue;
  95         } else {
  96                 bias_and_scale->scale_blue = 0x2000;
  97                 bias_and_scale->scale_red = 0x2000;
  98                 bias_and_scale->scale_green = 0x2000;
  99         }
 100 }
 101