Extend halving distribution to all curves/custom-LUT in a encode-to-linear operation, not just PQ/SRGB. This fixes IGT kms_colorop test failures after [1]. Also use the CM3 degamma helper which translates curves into hw points for DCN30, DCN301, DCN31, and DCN314 not just DCN32+, as the banding issue is present all of them.
[1] https://lore.kernel.org/amd-gfx/[email protected]/ v1: https://lore.kernel.org/amd-gfx/[email protected]/ Changes: - Clearly state which DCN versions are affected and the reference commit (Alex H.) Melissa Melissa Wen (2): drm/amd/display: use halving distribution for all encode-to-linear curves drm/amd/display: use translate_curve_to_degamma_hw_format on DCN30 .../amd/display/dc/dcn30/dcn30_cm_common.c | 34 ++++++------------- .../amd/display/dc/hwss/dcn30/dcn30_hwseq.c | 10 +++--- 2 files changed, 14 insertions(+), 30 deletions(-) -- 2.53.0
