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
35bool 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
57bool 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
66bool 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
75bool 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
86void 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