[PATCH v3 03/21] media: ipu6: Stream number on CSI-2 receiver source pads is always 0

[Sakari Ailus <sakari.ailus@linux.intel.com>]

The stream number on the video nodes' single pad is always 0, thus the
stream number of the CSI-2 receivers' source pads is also 0. Remove the
complexity that is there to come up with 0.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 .../media/pci/intel/ipu6/ipu6-isys-video.c    | 49 ++-----------------
 1 file changed, 5 insertions(+), 44 deletions(-)

diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-video.c b/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
index b63fb9673604..b15c24b1b710 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-video.c
@@ -867,66 +867,27 @@ ipu6_isys_query_stream_by_source(struct ipu6_isys *isys, int source, u8 vc)
 	return stream;
 }
 
-static u64 get_stream_mask_by_pipeline(struct ipu6_isys_video *__av)
-{
-	struct media_pipeline *pipeline =
-		media_entity_pipeline(&__av->vdev.entity);
-	unsigned int i;
-	u64 stream_mask = 0;
-
-	for (i = 0; i < NR_OF_CSI2_SRC_PADS; i++) {
-		struct ipu6_isys_video *av = &__av->csi2->av[i];
-
-		if (pipeline == media_entity_pipeline(&av->vdev.entity))
-			stream_mask |= BIT_ULL(av->source_stream);
-	}
-
-	return stream_mask;
-}
-
 int ipu6_isys_video_set_streaming(struct ipu6_isys_video *av, int state)
 {
-	struct v4l2_subdev_krouting *routing;
-	struct ipu6_isys_stream *stream = av->stream;
-	struct v4l2_subdev_state *subdev_state;
 	struct device *dev = &av->isys->adev->auxdev.dev;
 	struct v4l2_subdev *sd;
 	struct media_pad *r_pad;
-	u32 sink_pad, sink_stream;
-	u64 r_stream;
-	u64 stream_mask = 0;
 	int ret = 0;
 
-	dev_dbg(dev, "set stream: %d\n", state);
-
-	sd = &stream->asd->sd;
+	sd = &av->stream->asd->sd;
 	r_pad = media_pad_remote_pad_first(&av->pad);
-	r_stream = ipu6_isys_get_src_stream_by_src_pad(sd, r_pad->index);
-
-	subdev_state = v4l2_subdev_lock_and_get_active_state(sd);
-	routing = &subdev_state->routing;
-	ret = v4l2_subdev_routing_find_opposite_end(routing, r_pad->index,
-						    r_stream, &sink_pad,
-						    &sink_stream);
-	v4l2_subdev_unlock_state(subdev_state);
-	if (ret)
-		return ret;
 
-	stream_mask = get_stream_mask_by_pipeline(av);
 	if (!state) {
 		/* stop sub-device which connects with video */
-		dev_dbg(dev, "stream off entity %s pad:%d mask:0x%llx\n",
-			sd->name, r_pad->index, stream_mask);
-		ret = v4l2_subdev_disable_streams(sd, r_pad->index,
-						  stream_mask);
+		dev_dbg(dev, "stream off %s pad:%d\n", sd->name, r_pad->index);
+		ret = v4l2_subdev_disable_streams(sd, r_pad->index, 1);
 		if (ret)
 			dev_err(dev, "stream off %s failed with %d\n", sd->name,
 				ret);
 	} else {
 		/* start sub-device which connects with video */
-		dev_dbg(dev, "stream on %s pad %d mask 0x%llx\n", sd->name,
-			r_pad->index, stream_mask);
-		ret = v4l2_subdev_enable_streams(sd, r_pad->index, stream_mask);
+		dev_dbg(dev, "stream on %s pad %d\n", sd->name, r_pad->index);
+		ret = v4l2_subdev_enable_streams(sd, r_pad->index, 1);
 		if (ret)
 			dev_err(dev, "stream on %s failed with %d\n", sd->name,
 				ret);
-- 
2.47.3