From: Hsiao Chien Sung <shawn.sung@xxxxxxxxxxxx> Support "None" alpha blending mode on MediaTek's chips. Signed-off-by: Hsiao Chien Sung <shawn.sung@xxxxxxxxxxxx> Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx> --- drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index ad84c2fe57111..87dbecc09a260 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -480,7 +480,8 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx, con |= state->base.alpha & OVL_CON_ALPHA; } - if (state->base.fb && !state->base.fb->format->has_alpha) + if (blend_mode == DRM_MODE_BLEND_PIXEL_NONE || + (state->base.fb && !state->base.fb->format->has_alpha)) ignore_pixel_alpha = OVL_CONST_BLEND; if (pending->rotation & DRM_MODE_REFLECT_Y) { -- 2.18.0