From: Hsiao Chien Sung <shawn.sung@xxxxxxxxxxxx> Set the plane alpha according to DRM plane property. Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.") Signed-off-by: Hsiao Chien Sung <shawn.sung@xxxxxxxxxxxx> --- drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index 943db4f1bd6b..4b370bc0746d 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -458,8 +458,10 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx, } con = ovl_fmt_convert(ovl, fmt); - if (state->base.fb && state->base.fb->format->has_alpha) - con |= OVL_CON_AEN | OVL_CON_ALPHA; + if (state->base.fb) { + con |= OVL_CON_AEN; + con |= state->base.alpha & OVL_CON_ALPHA; + } /* CONST_BLD must be enabled for XRGB formats although the alpha channel * can be ignored, or OVL will still read the value from memory. -- Git-146)