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 
102