[media] v4l: vsp1: Move vsp1_video pointer from vsp1_entity to vsp1_rwpf

Only RPFs and WPFs can be associated with video nodes, don't waste
memory by storing the video pointer in all entities.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/vsp1/vsp1_drv.c

@@ -89,8 +89,8 @@ static int vsp1_create_links(struct vsp1_device *vsp1, struct vsp1_entity *sink)
 		/* RPFs have no source entities, just connect their source pad
 		 * to their video device.
 		 */
-		return media_create_pad_link(&rpf->entity.video->video.entity,
-					     0, &rpf->entity.subdev.entity,
+		return media_create_pad_link(&rpf->video->video.entity, 0,
+					     &rpf->entity.subdev.entity,
 					     RWPF_PAD_SINK,
 					     MEDIA_LNK_FL_ENABLED |
 					     MEDIA_LNK_FL_IMMUTABLE);
@@ -139,7 +139,7 @@ static int vsp1_create_links(struct vsp1_device *vsp1, struct vsp1_entity *sink)
 
 		return media_create_pad_link(&wpf->entity.subdev.entity,
 					     RWPF_PAD_SOURCE,
-					     &wpf->entity.video->video.entity,
+					     &wpf->video->video.entity,
 					     0, flags);
 	}
 

drivers/media/platform/vsp1/vsp1_entity.h

@@ -19,7 +19,6 @@
 #include <media/v4l2-subdev.h>
 
 struct vsp1_device;
-struct vsp1_video;
 
 enum vsp1_entity_type {
 	VSP1_ENTITY_BRU,
@@ -71,8 +70,6 @@ struct vsp1_entity {
 	struct v4l2_subdev subdev;
 	struct v4l2_mbus_framefmt *formats;
 
-	struct vsp1_video *video;
-
 	spinlock_t lock;		/* Protects the streaming field */
 	bool streaming;
 };

drivers/media/platform/vsp1/vsp1_rwpf.h

@@ -24,6 +24,7 @@
 #define RWPF_PAD_SOURCE				1
 
 struct vsp1_rwpf;
+struct vsp1_video;
 
 struct vsp1_rwpf_memory {
 	unsigned int num_planes;
@@ -40,6 +41,8 @@ struct vsp1_rwpf {
 	struct vsp1_entity entity;
 	struct v4l2_ctrl_handler ctrls;
 
+	struct vsp1_video *video;
+
 	const struct vsp1_rwpf_operations *ops;
 
 	unsigned int max_width;

drivers/media/platform/vsp1/vsp1_video.c

@@ -448,11 +448,11 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
 		if (e->type == VSP1_ENTITY_RPF) {
 			rwpf = to_rwpf(subdev);
 			pipe->inputs[pipe->num_inputs++] = rwpf;
-			rwpf->entity.video->pipe_index = pipe->num_inputs;
+			rwpf->video->pipe_index = pipe->num_inputs;
 		} else if (e->type == VSP1_ENTITY_WPF) {
 			rwpf = to_rwpf(subdev);
 			pipe->output = to_rwpf(subdev);
-			rwpf->entity.video->pipe_index = 0;
+			rwpf->video->pipe_index = 0;
 		} else if (e->type == VSP1_ENTITY_LIF) {
 			pipe->lif = e;
 		} else if (e->type == VSP1_ENTITY_BRU) {
@@ -664,10 +664,10 @@ void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)
 
 	/* Complete buffers on all video nodes. */
 	for (i = 0; i < pipe->num_inputs; ++i)
-		vsp1_video_frame_end(pipe, pipe->inputs[i]->entity.video);
+		vsp1_video_frame_end(pipe, pipe->inputs[i]->video);
 
 	if (!pipe->lif)
-		vsp1_video_frame_end(pipe, pipe->output->entity.video);
+		vsp1_video_frame_end(pipe, pipe->output->video);
 
 	spin_lock_irqsave(&pipe->irqlock, flags);
 
@@ -1217,7 +1217,7 @@ struct vsp1_video *vsp1_video_create(struct vsp1_device *vsp1,
 	if (!video)
 		return ERR_PTR(-ENOMEM);
 
-	rwpf->entity.video = video;
+	rwpf->video = video;
 
 	video->vsp1 = vsp1;
 	video->rwpf = rwpf;