From: Alex Bee knaerzche@gmail.com
[ Upstream commit 046e0db975695540c9d9898cdbf0b60533d28afb ]
alpha_en should be set to 0 if it is not used, i.e. to disable alpha blending if it was enabled before and should be disabled now.
Fixes: 2aae8ed1f390 ("drm/rockchip: Add per-pixel alpha support for the PX30 VOP") Signed-off-by: Alex Bee knaerzche@gmail.com Signed-off-by: Heiko Stuebner heiko@sntech.de Link: https://patchwork.freedesktop.org/patch/msgid/20210528130554.72191-6-knaerzc... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index c80f7d9fd13f..0f23144491e4 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -1013,6 +1013,7 @@ static void vop_plane_atomic_update(struct drm_plane *plane, VOP_WIN_SET(vop, win, alpha_en, 1); } else { VOP_WIN_SET(vop, win, src_alpha_ctl, SRC_ALPHA_EN(0)); + VOP_WIN_SET(vop, win, alpha_en, 0); }
VOP_WIN_SET(vop, win, enable, 1);