@@ -1678,10 +1678,11 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd,
}
/*
- * V4L2_SUBDEV_ROUTING_NO_STREAM_MIX: Streams on the same pad
- * may not be routed to streams on different pads.
+ * V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX: Streams on the same
+ * sink pad may not be routed to streams on different source
+ * pads.
*/
- if (disallow & V4L2_SUBDEV_ROUTING_NO_STREAM_MIX) {
+ if (disallow & V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX) {
if (remote_pads[route->sink_pad] != U32_MAX &&
remote_pads[route->sink_pad] != route->source_pad) {
dev_dbg(sd->dev,
@@ -1690,6 +1691,15 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd,
goto out;
}
+ remote_pads[route->sink_pad] = route->source_pad;
+ }
+
+ /*
+ * V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX: Streams on the same
+ * source pad may not be routed to streams on different sink
+ * pads.
+ */
+ if (disallow & V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX) {
if (remote_pads[route->source_pad] != U32_MAX &&
remote_pads[route->source_pad] != route->sink_pad) {
dev_dbg(sd->dev,
@@ -1698,7 +1708,6 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd,
goto out;
}
- remote_pads[route->sink_pad] = route->source_pad;
remote_pads[route->source_pad] = route->sink_pad;
}
@@ -1643,19 +1643,29 @@ u64 v4l2_subdev_state_xlate_streams(const struct v4l2_subdev_state *state,
* @V4L2_SUBDEV_ROUTING_NO_N_TO_1:
* multiple input streams may not be routed to the same output stream
* (stream merging)
- * @V4L2_SUBDEV_ROUTING_NO_STREAM_MIX:
- * streams on the same pad may not be routed to streams on different pads
+ * @V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX:
+ * streams on the same sink pad may not be routed to streams on different
+ * source pads
+ * @V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX:
+ * streams on the same source pad may not be routed to streams on different
+ * sink pads
* @V4L2_SUBDEV_ROUTING_ONLY_1_TO_1:
* only non-overlapping 1-to-1 stream routing is allowed (a combination of
* @V4L2_SUBDEV_ROUTING_NO_1_TO_N and @V4L2_SUBDEV_ROUTING_NO_N_TO_1)
+ * @V4L2_SUBDEV_ROUTING_NO_STREAM_MIX:
+ * streams on the same pad may not be routed to streams on different pads
*/
enum v4l2_subdev_routing_restriction {
V4L2_SUBDEV_ROUTING_NO_1_TO_N = BIT(0),
V4L2_SUBDEV_ROUTING_NO_N_TO_1 = BIT(1),
- V4L2_SUBDEV_ROUTING_NO_STREAM_MIX = BIT(2),
+ V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX = BIT(2),
+ V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX = BIT(3),
V4L2_SUBDEV_ROUTING_ONLY_1_TO_1 =
V4L2_SUBDEV_ROUTING_NO_1_TO_N |
V4L2_SUBDEV_ROUTING_NO_N_TO_1,
+ V4L2_SUBDEV_ROUTING_NO_STREAM_MIX =
+ V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX |
+ V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX,
};
/**
V4L2_SUBDEV_ROUTING_NO_STREAM_MIX routing validation flag means that all routes from a sink pad must go to the same source pad and all routes going to the same source pad must originate from the same sink pad. This does not cover all use cases. For example, if a device routes all streams from a single sink pad to any of the source pads, but streams from multiple sink pads can go to the same source pad, the current flag is too restrictive. Split the flag into two parts, V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX and V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX, which add the restriction only on one side of the device. Together they mean the same as V4L2_SUBDEV_ROUTING_NO_STREAM_MIX. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> --- drivers/media/v4l2-core/v4l2-subdev.c | 17 +++++++++++++---- include/media/v4l2-subdev.h | 16 +++++++++++++--- 2 files changed, 26 insertions(+), 7 deletions(-)