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authorTomi Valkeinen <tomi.valkeinen@ideasonboard.com>2023-03-02 10:57:48 +0100
committerMauro Carvalho Chehab <mchehab@kernel.org>2023-03-20 00:39:13 +0100
commita1299df6718b718256fd9bf6d7f9bed44c826e61 (patch)
tree71833170020fb3e94d6c93f55c8eb73d946bd8dc /include/media
parent698a619a04bee1359358d5cba552f008709b79bc (diff)
media: subdev: Add V4L2_SUBDEV_ROUTING_NO_MULTIPLEXING
A common case with subdev routing is that on the subdevice just before the DMA engines (video nodes), no multiplexing is allowed on the source pads, as the DMA engine can only handle a single stream. In some other situations one might also want to do the same check on the sink side. Add new routing validation flags to check these: V4L2_SUBDEV_ROUTING_NO_SINK_MULTIPLEXING and V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/v4l2-subdev.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index f921d8a7898e..1d2877700cdb 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -1651,6 +1651,10 @@ u64 v4l2_subdev_state_xlate_streams(const struct v4l2_subdev_state *state,
* all streams from a sink pad must be routed to a single source pad
* @V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX:
* all streams on a source pad must originate from a single sink pad
+ * @V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING:
+ * source pads shall not contain multiplexed streams
+ * @V4L2_SUBDEV_ROUTING_NO_SINK_MULTIPLEXING:
+ * sink pads shall not contain multiplexed streams
* @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)
@@ -1659,18 +1663,25 @@ u64 v4l2_subdev_state_xlate_streams(const struct v4l2_subdev_state *state,
* that source pad shall not get routes from any other sink pad
* (a combination of @V4L2_SUBDEV_ROUTING_NO_SINK_STREAM_MIX and
* @V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX)
+ * @V4L2_SUBDEV_ROUTING_NO_MULTIPLEXING:
+ * no multiplexed streams allowed on either source or sink sides.
*/
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_SINK_STREAM_MIX = BIT(2),
V4L2_SUBDEV_ROUTING_NO_SOURCE_STREAM_MIX = BIT(3),
+ V4L2_SUBDEV_ROUTING_NO_SINK_MULTIPLEXING = BIT(4),
+ V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING = BIT(5),
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_MULTIPLEXING =
+ V4L2_SUBDEV_ROUTING_NO_SINK_MULTIPLEXING |
+ V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING,
};
/**