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      1 /*	$NetBSD: amdgpu_dc_common.c,v 1.2 2021/12/18 23:45:00 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012-15 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: AMD
     25  *
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: amdgpu_dc_common.c,v 1.2 2021/12/18 23:45:00 riastradh Exp $");
     30 
     31 #include "core_types.h"
     32 #include "dc_common.h"
     33 #include "basics/conversion.h"
     34 
     35 bool is_rgb_cspace(enum dc_color_space output_color_space)
     36 {
     37 	switch (output_color_space) {
     38 	case COLOR_SPACE_SRGB:
     39 	case COLOR_SPACE_SRGB_LIMITED:
     40 	case COLOR_SPACE_2020_RGB_FULLRANGE:
     41 	case COLOR_SPACE_2020_RGB_LIMITEDRANGE:
     42 	case COLOR_SPACE_ADOBERGB:
     43 		return true;
     44 	case COLOR_SPACE_YCBCR601:
     45 	case COLOR_SPACE_YCBCR709:
     46 	case COLOR_SPACE_YCBCR601_LIMITED:
     47 	case COLOR_SPACE_YCBCR709_LIMITED:
     48 	case COLOR_SPACE_2020_YCBCR:
     49 		return false;
     50 	default:
     51 		/* Add a case to switch */
     52 		BREAK_TO_DEBUGGER();
     53 		return false;
     54 	}
     55 }
     56 
     57 bool is_lower_pipe_tree_visible(struct pipe_ctx *pipe_ctx)
     58 {
     59 	if (pipe_ctx->plane_state && pipe_ctx->plane_state->visible)
     60 		return true;
     61 	if (pipe_ctx->bottom_pipe && is_lower_pipe_tree_visible(pipe_ctx->bottom_pipe))
     62 		return true;
     63 	return false;
     64 }
     65 
     66 bool is_upper_pipe_tree_visible(struct pipe_ctx *pipe_ctx)
     67 {
     68 	if (pipe_ctx->plane_state && pipe_ctx->plane_state->visible)
     69 		return true;
     70 	if (pipe_ctx->top_pipe && is_upper_pipe_tree_visible(pipe_ctx->top_pipe))
     71 		return true;
     72 	return false;
     73 }
     74 
     75 bool is_pipe_tree_visible(struct pipe_ctx *pipe_ctx)
     76 {
     77 	if (pipe_ctx->plane_state && pipe_ctx->plane_state->visible)
     78 		return true;
     79 	if (pipe_ctx->top_pipe && is_upper_pipe_tree_visible(pipe_ctx->top_pipe))
     80 		return true;
     81 	if (pipe_ctx->bottom_pipe && is_lower_pipe_tree_visible(pipe_ctx->bottom_pipe))
     82 		return true;
     83 	return false;
     84 }
     85 
     86 void build_prescale_params(struct  dc_bias_and_scale *bias_and_scale,
     87 		const struct dc_plane_state *plane_state)
     88 {
     89 	if (plane_state->format >= SURFACE_PIXEL_FORMAT_VIDEO_BEGIN
     90 			&& plane_state->format != SURFACE_PIXEL_FORMAT_INVALID
     91 			&& plane_state->input_csc_color_matrix.enable_adjustment
     92 			&& plane_state->coeff_reduction_factor.value != 0) {
     93 		bias_and_scale->scale_blue = fixed_point_to_int_frac(
     94 			dc_fixpt_mul(plane_state->coeff_reduction_factor,
     95 					dc_fixpt_from_fraction(256, 255)),
     96 				2,
     97 				13);
     98 		bias_and_scale->scale_red = bias_and_scale->scale_blue;
     99 		bias_and_scale->scale_green = bias_and_scale->scale_blue;
    100 	} else {
    101 		bias_and_scale->scale_blue = 0x2000;
    102 		bias_and_scale->scale_red = 0x2000;
    103 		bias_and_scale->scale_green = 0x2000;
    104 	}
    105 }
    106 
    107