drm/vmwgfx: Move surface copy cmd to atomic function

When display surface is different than the framebuffer surface, atomic
path do not copy the surface data. This commit moved the code to copy
surface from legacy to atomic path.
Signed-off-by: NDeepak Rawat <drawat@vmware.com>
Reviewed-by: NSinclair Yeh <syeh@vmware.com>
Signed-off-by: NThomas Hellstrom <thellstrom@vmware.com>

drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c

@@ -492,8 +492,6 @@ static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
 {
 	struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 	struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
-	struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
-	struct drm_vmw_rect vclips;
 	int ret;
 
 	dev_priv          = vmw_priv(crtc->dev);
@@ -519,26 +517,6 @@ static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
 	if (stdu->base.is_implicit)
 		vmw_kms_update_implicit_fb(dev_priv, crtc);
 
-	/*
-	 * Now that we've bound a new surface to the screen target,
-	 * update the contents.
-	 */
-	vclips.x = crtc->x;
-	vclips.y = crtc->y;
-	vclips.w = crtc->mode.hdisplay;
-	vclips.h = crtc->mode.vdisplay;
-
-	if (vfb->dmabuf)
-		ret = vmw_kms_stdu_dma(dev_priv, NULL, vfb, NULL, NULL, &vclips,
-				       1, 1, true, false, crtc);
-	else
-		ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, &vclips,
-						 NULL, 0, 0, 1, 1, NULL, crtc);
-	if (ret) {
-		DRM_ERROR("Page flip update error %d.\n", ret);
-		return ret;
-	}
-
 	if (event) {
 		struct vmw_fence_obj *fence = NULL;
 		struct drm_file *file_priv = event->base.file_priv;
@@ -1333,6 +1311,7 @@ vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
 	struct vmw_screen_target_display_unit *stdu;
 	struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
 	struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
+	struct vmw_framebuffer *vfb = NULL;
 	int ret;
 
 	stdu     = vmw_crtc_to_stdu(crtc);
@@ -1346,9 +1325,10 @@ vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
 	if (!stdu->defined)
 		return;
 
-	if (plane->state->fb)
+	if (plane->state->fb) {
+		vfb = vmw_framebuffer_to_vfb(plane->state->fb);
 		ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
-	else
+	} else
 		ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
 
 	/*
@@ -1360,7 +1340,24 @@ vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
 	else
 		crtc->primary->fb = plane->state->fb;
 
-	ret = vmw_stdu_update_st(dev_priv, stdu);
+	if (vfb) {
+		struct drm_vmw_rect vclips;
+
+		vclips.x = crtc->x;
+		vclips.y = crtc->y;
+		vclips.w = crtc->mode.hdisplay;
+		vclips.h = crtc->mode.vdisplay;
+
+		if (vfb->dmabuf)
+			ret = vmw_kms_stdu_dma(dev_priv, NULL, vfb, NULL, NULL,
+					       &vclips, 1, 1, true, false,
+					       crtc);
+		else
+			ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL,
+							 &vclips, NULL, 0, 0,
+							 1, 1, NULL, crtc);
+	} else
+		ret = vmw_stdu_update_st(dev_priv, stdu);
 
 	if (ret)
 		DRM_ERROR("Failed to update STDU.\n");