drm/msm/sde: avoid alpha fast clear on z_stage 0



Avoid alpha fast clear enable on z_stage 0 because
some client may stage non-opaque layer on this stage
with fast clear UBWC data on RGBA plane.

Change-Id: Ida5747401c5855875ed32c4b75163cd8b872dbbe
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>

parent 2467fe92

drivers/gpu/drm/msm/sde/sde_plane.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -3569,7 +3569,8 @@ static int sde_plane_sspp_atomic_check(struct drm_plane *plane,

		pstate->const_alpha_en = fmt->alpha_enable &&
		(SDE_DRM_BLEND_OP_OPAQUE !=
		sde_plane_get_property(pstate, PLANE_PROP_BLEND_OP));
		sde_plane_get_property(pstate, PLANE_PROP_BLEND_OP)) &&
		(pstate->stage != SDE_STAGE_0);

		modeset_update:
		if (!ret)