To support multiplexed streams the internal routing between the
rcar-csi2 sink pad and its source pads needs to be described.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
drivers/media/platform/rcar-vin/rcar-csi2.c | 54 +++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/drivers/media/platform/rcar-vin/rcar-csi2.c b/drivers/media/platform/rcar-vin/rcar-csi2.c
index 2dd7d03d622d5510..fd1133e72482fc19 100644
--- a/drivers/media/platform/rcar-vin/rcar-csi2.c
+++ b/drivers/media/platform/rcar-vin/rcar-csi2.c
@@ -334,6 +334,14 @@ static int rcar_csi2_pad_to_vc(unsigned int pad)
return pad - RCAR_CSI2_SOURCE_VC0;
}
+static int rcar_csi2_vc_to_pad(unsigned int vc)
+{
+ if (vc > 3)
+ return -EINVAL;
+
+ return vc + RCAR_CSI2_SOURCE_VC0;
+}
+
struct rcar_csi2_info {
const struct phypll_hsfreqrange *hsfreqrange;
const struct phtw_testdin_data *testdin_data;
@@ -752,9 +760,55 @@ static int rcar_csi2_get_pad_format(struct v4l2_subdev *sd,
return 0;
}
+static int rcar_csi2_get_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_routing *routing)
+{
+ struct rcar_csi2 *priv = sd_to_csi2(sd);
+ struct v4l2_mbus_frame_desc fd;
+ struct v4l2_subdev_route *r = routing->routes;
+ struct v4l2_subdev *rsubdev;
+ unsigned int i, rpad;
+ int ret;
+
+ /* Get information about multiplexed link */
+ ret = rcar_csi2_get_source_info(priv, &rsubdev, &rpad, &fd);
+ if (ret)
+ return ret;
+
+ if (routing->num_routes < fd.num_entries) {
+ routing->num_routes = fd.num_entries;
+ return -ENOSPC;
+ }
+
+ routing->num_routes = fd.num_entries;
+
+ for (i = 0; i < fd.num_entries; i++) {
+ struct v4l2_mbus_frame_desc_entry *entry = &fd.entry[i];
+ int source_pad;
+
+ source_pad = rcar_csi2_vc_to_pad(entry->bus.csi2.channel);
+ if (source_pad < 0) {
+ dev_err(priv->dev, "Virtual Channel out of range: %u\n",
+ entry->bus.csi2.channel);
+ return -ENOSPC;
+ }
+
+ r->sink_pad = RCAR_CSI2_SINK;
+ r->sink_stream = entry->stream;
+ r->source_pad = source_pad;
+ r->source_stream = 0;
+ r->flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE |
+ V4L2_SUBDEV_ROUTE_FL_IMMUTABLE;
+ r++;
+ }
+
+ return 0;
+}
+
static const struct v4l2_subdev_pad_ops rcar_csi2_pad_ops = {
.set_fmt = rcar_csi2_set_pad_format,
.get_fmt = rcar_csi2_get_pad_format,
+ .get_routing = rcar_csi2_get_routing,
.s_stream = rcar_csi2_s_stream,
};
--
2.15.1
