drm/imx: ipuv3 plane: Check different types of plane separately

The IPUv3 primary plane doesn't support partial off screen.
So, this patch separates plane check logics for primary plane and overlay
plane and adds more limitations on the primary plane.
Signed-off-by: Liu Ying <gnuiyl@gmail.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

drivers/gpu/drm/imx/ipuv3-plane.c

@@ -199,6 +199,16 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc,
 	if (src_w != crtc_w || src_h != crtc_h)
 		return -EINVAL;
 
+	if (ipu_plane->base.type == DRM_PLANE_TYPE_PRIMARY) {
+		/* full plane doesn't support partial off screen */
+		if (crtc_x || crtc_y || crtc_w != mode->hdisplay ||
+			crtc_h != mode->vdisplay)
+			return -EINVAL;
+
+		/* full plane minimum width is 13 pixels */
+		if (crtc_w < 13)
+			return -EINVAL;
+	} else if (ipu_plane->base.type == DRM_PLANE_TYPE_OVERLAY) {
 		/* clip to crtc bounds */
 		if (crtc_x < 0) {
 			if (-crtc_x > crtc_w)
@@ -228,8 +238,7 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc,
 			crtc_h = mode->vdisplay - crtc_y;
 			src_h = crtc_h;
 		}
-	/* full plane minimum width is 13 pixels */
-	if (crtc_w < 13 && (ipu_plane->dp_flow != IPU_DP_FLOW_SYNC_FG))
+	} else
 		return -EINVAL;
 	if (crtc_h < 2)
 		return -EINVAL;