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Hi, Hsiao-chien:
On Tue, 2023-12-12 at 20:19 +0800, Hsiao Chien Sung wrote:
> Support alpha blending by adding correct blend mode and
> alpha property in plane initialization.
Reviewed-by: CK Hu <ck.hu@mediatek.com>
>
> Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_plane.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> index 9208f03b3f8c..dfd81172a940 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
> @@ -349,6 +349,17 @@ int mtk_plane_init(struct drm_device *dev,
> struct drm_plane *plane,
> DRM_INFO("Create rotation property failed\n");
> }
>
> +err = drm_plane_create_alpha_property(plane);
> +if (err)
> +DRM_ERROR("failed to create property: alpha\n");
> +
> +err = drm_plane_create_blend_mode_property(plane,
> + BIT(DRM_MODE_BLEND_P
> REMULTI) |
> + BIT(DRM_MODE_BLEND_C
> OVERAGE) |
> + BIT(DRM_MODE_BLEND_P
> IXEL_NONE));
> +if (err)
> +DRM_ERROR("failed to create property: blend_mode\n");
> +
> drm_plane_helper_add(plane, &mtk_plane_helper_funcs);
>
> return 0;
</pre>
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