[PATCH v22 18/24] drm/mediatek: add ETHDR support for MT8195

[Rex-BC Chen]

On Thu, 2022-05-26 at 19:02 +0800, Nancy.Lin wrote:
> ETHDR is a part of ovl_adaptor.
> ETHDR is designed for HDR video and graphics conversion in the
> external
> display path. It handles multiple HDR input types and performs tone
> mapping, color space/color format conversion, and then combine
> different layers, output the required HDR or SDR signal to the
> subsequent display path.
> 
> Signed-off-by: Nancy.Lin <nancy.lin at mediatek.com>
> Reviewed-by: Chun-Kuang Hu <chunkuang.hu at kernel.org>
> Reviewed-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno at collabora.com>
> Tested-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno at collabora.com>
> ---
>  

[Bo-Chen: Test on MT8195 Tomato Chromebook with external display]
Tested-by: Bo-Chen Chen <rex-bc.chen at mediatek.com>