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drm/amd/display: Fix COLOR_SPACE_YCBCR2020_TYPE matrix

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commit 973a9c810c785ac270a6d50d8cf862b0c1643a10 upstream.

The YCC conversion matrix for RGB -> COLOR_SPACE_YCBCR2020_TYPE is
missing the values for the fourth column of the matrix.

The fourth column of the matrix is essentially just a value that is
added given that the color is 3 components in size.
These values are needed to bias the chroma from the [-1, 1] -> [0, 1]
range.

This fixes color being very green when using Gamescope HDR on HDMI
output which prefers YCC 4:4:4.

Fixes: 40df2f809e ("drm/amd/display: color space ycbcr709 support")
Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Joshua Ashton <joshua@froggi.es>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Joshua Ashton 2023-01-10 22:50:42 +00:00 committed by Greg Kroah-Hartman
parent 763a74e1de
commit 2b1375fac0
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c
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@ -92,8 +92,8 @@ static const struct out_csc_color_matrix_type output_csc_matrix[] = {
{ 0xE00, 0xF349, 0xFEB7, 0x1000, 0x6CE, 0x16E3,
0x24F, 0x200, 0xFCCB, 0xF535, 0xE00, 0x1000} },
{ COLOR_SPACE_YCBCR2020_TYPE,
{ 0x1000, 0xF149, 0xFEB7, 0x0000, 0x0868, 0x15B2,
0x01E6, 0x0000, 0xFB88, 0xF478, 0x1000, 0x0000} },
{ 0x1000, 0xF149, 0xFEB7, 0x1004, 0x0868, 0x15B2,
0x01E6, 0x201, 0xFB88, 0xF478, 0x1000, 0x1004} },
{ COLOR_SPACE_YCBCR709_BLACK_TYPE,
{ 0x0000, 0x0000, 0x0000, 0x1000, 0x0000, 0x0000,
0x0000, 0x0200, 0x0000, 0x0000, 0x0000, 0x1000} },