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[Why] ABM does not take effect when brightness is below twenty percent on VABC LCD panels. [How] Create new VESA aux path for brightness translation functions. When VESA aux enabled use zero-anchored linear interpolation to translate instead of the legacy min max backlight mapping. Reviewed-by: Anthony Koo <anthony.koo@amd.com> Signed-off-by: Iswara Nagulendran <Iswara.Nagulendran@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
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