diff options
Diffstat (limited to 'drivers/media/v4l2-core')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-subdev.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index b376c47b083d..bfb102f2121a 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -1708,7 +1708,8 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd, unsigned int i, j; int ret = -EINVAL; - if (disallow & V4L2_SUBDEV_ROUTING_NO_STREAM_MIX) { + if (disallow & (V4L2_SUBDEV_ROUTING_NO_STREAM_MIX | + V4L2_SUBDEV_ROUTING_NO_MULTIPLEXING)) { remote_pads = kcalloc(sd->entity.num_pads, sizeof(*remote_pads), GFP_KERNEL); if (!remote_pads) @@ -1748,8 +1749,6 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd, i, "sink"); goto out; } - - remote_pads[route->sink_pad] = route->source_pad; } /* @@ -1764,7 +1763,38 @@ int v4l2_subdev_routing_validate(struct v4l2_subdev *sd, i, "source"); goto out; } + } + + /* + * V4L2_SUBDEV_ROUTING_NO_SINK_MULTIPLEXING: Pads on the sink + * side can not do stream multiplexing, i.e. there can be only + * a single stream in a sink pad. + */ + if (disallow & V4L2_SUBDEV_ROUTING_NO_SINK_MULTIPLEXING) { + if (remote_pads[route->sink_pad] != U32_MAX) { + dev_dbg(sd->dev, + "route %u attempts to multiplex on %s pad %u\n", + i, "sink", route->sink_pad); + goto out; + } + } + /* + * V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING: Pads on the + * source side can not do stream multiplexing, i.e. there can + * be only a single stream in a source pad. + */ + if (disallow & V4L2_SUBDEV_ROUTING_NO_SOURCE_MULTIPLEXING) { + if (remote_pads[route->source_pad] != U32_MAX) { + dev_dbg(sd->dev, + "route %u attempts to multiplex on %s pad %u\n", + i, "source", route->source_pad); + goto out; + } + } + + if (remote_pads) { + remote_pads[route->sink_pad] = route->source_pad; remote_pads[route->source_pad] = route->sink_pad; } |