drm/mediatek: gamma: Program gamma LUT type for descending or rising

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All of the SoCs that don't have dithering control in the gamma IP
have got a GAMMA_LUT_TYPE bit that tells to the IP if the LUT is
"descending" (bit set) or "rising" (bit cleared): make sure to set
it correctly after programming the LUT.

Reviewed-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231012095736.100784-14-angelogioacchino.delregno@collabora.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

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AngeloGioacchino Del Regno 2023-10-12 11:57:33 +02:00 • committed by Chun-Kuang Hu

parent 921e902b2c

commit 692e1a08ae

1 changed files with 20 additions and 0 deletions

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drivers/gpu/drm/mediatek/mtk_disp_gamma.c

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