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authorEric Yang <Eric.Yang2@amd.com>2018-11-22 08:07:06 +0100
committerAlex Deucher <alexander.deucher@amd.com>2018-12-19 00:25:11 +0100
commit12750d1647f118496f1da727146f255f5e44d500 (patch)
tree1cbe5d0869f7a4a7576586769837175b4994f729 /drivers/pci/msi.c
parentdrm/amd/display: Warn instead of error on REG_WAIT timeout (diff)
downloadlinux-12750d1647f118496f1da727146f255f5e44d500.tar.xz
linux-12750d1647f118496f1da727146f255f5e44d500.zip
drm/amd/display: fix YCbCr420 blank color
[Why] YCbCr420 packing format uses two chanels for luma, and 1 channel for both chroma component. Our previous implementation did not account for this and results in every other pixel having very high luma value, showing greyish color instead of black. YCbCr444 = <Y1, Cb1, Cr1>; <Y2, Cb2, Cr2> ..... YCbCr420 = <Y1, Y2, Cb1>; <Y3, Y4, Cr1> ..... [How] Program the second channel with the black color value for luma as well. Signed-off-by: Eric Yang <Eric.Yang2@amd.com> Reviewed-by: Hugo Hu <Hugo.Hu@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/pci/msi.c')
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