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[v3,32/35] v4l: vsp1: Disconnect unused RPFs from the DRM pipeline

Message ID 1454931845-23864-33-git-send-email-laurent.pinchart+renesas@ideasonboard.com (mailing list archive)
State Accepted
Delegated to: Geert Uytterhoeven
Headers show

Commit Message

Laurent Pinchart Feb. 8, 2016, 11:44 a.m. UTC 
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---
 drivers/media/platform/vsp1/vsp1_drm.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/media/platform/vsp1/vsp1_drm.c b/drivers/media/platform/vsp1/vsp1_drm.c
index ac81ff10c339..a918bb4ab46c 100644
--- a/drivers/media/platform/vsp1/vsp1_drm.c
+++ b/drivers/media/platform/vsp1/vsp1_drm.c
@@ -38,13 +38,17 @@  static int vsp1_drm_pipeline_run(struct vsp1_pipeline *pipe)
 		struct vsp1_entity *entity;
 
 		list_for_each_entry(entity, &pipe->entities, list_pipe) {
-			/* Skip unused RPFs. */
+			/* Disconnect unused RPFs from the pipeline. */
 			if (entity->type == VSP1_ENTITY_RPF) {
 				struct vsp1_rwpf *rpf =
 					to_rwpf(&entity->subdev);
 
-				if (!pipe->inputs[rpf->entity.index])
+				if (!pipe->inputs[rpf->entity.index]) {
+					vsp1_write(entity->vsp1,
+						   entity->route->reg,
+						   VI6_DPR_NODE_UNUSED);
 					continue;
+				}
 			}
 
 			vsp1_entity_route_setup(entity);