[media] davinci_vbpe: stop MEDIA_ENT_T_V4L2_SUBDEV abuse

This driver is abusing MEDIA_ENT_T_V4L2_SUBDEV:

- it uses a hack to check if the remote entity is a subdev;
- it still uses the legacy entity subtype check macro, that
  will be removed soon.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/staging/media/davinci_vpfe/dm365_ipipe.c

@@ -1712,8 +1712,11 @@ ipipe_link_setup(struct media_entity *entity, const struct media_pad *local,
 	struct vpfe_device *vpfe_dev = to_vpfe_device(ipipe);
 	u16 ipipeif_sink = vpfe_dev->vpfe_ipipeif.input;
 
-	switch (local->index | media_entity_type(remote->entity)) {
-	case IPIPE_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
+	if (!is_media_entity_v4l2_subdev(remote->entity))
+		return -EINVAL;
+
+	switch (local->index) {
+	case IPIPE_PAD_SINK:
 		if (!(flags & MEDIA_LNK_FL_ENABLED)) {
 			ipipe->input = IPIPE_INPUT_NONE;
 			break;
@@ -1726,7 +1729,7 @@ ipipe_link_setup(struct media_entity *entity, const struct media_pad *local,
 			ipipe->input = IPIPE_INPUT_CCDC;
 		break;
 
-	case IPIPE_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV:
+	case IPIPE_PAD_SOURCE:
 		/* out to RESIZER */
 		if (flags & MEDIA_LNK_FL_ENABLED)
 			ipipe->output = IPIPE_OUTPUT_RESIZER;

drivers/staging/media/davinci_vpfe/vpfe_video.c

@@ -88,7 +88,7 @@ vpfe_video_remote_subdev(struct vpfe_video_device *video, u32 *pad)
 {
 	struct media_pad *remote = media_entity_remote_pad(&video->pad);
 
-	if (remote == NULL || remote->entity->type != MEDIA_ENT_T_V4L2_SUBDEV)
+	if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
 		return NULL;
 	if (pad)
 		*pad = remote->index;
@@ -243,8 +243,7 @@ static int vpfe_video_validate_pipeline(struct vpfe_pipeline *pipe)
 
 		/* Retrieve the source format */
 		pad = media_entity_remote_pad(pad);
-		if (pad == NULL ||
-			pad->entity->type != MEDIA_ENT_T_V4L2_SUBDEV)
+		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
 			break;
 
 		subdev = media_entity_to_v4l2_subdev(pad->entity);