diff options
| author | Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> | 2023-01-15 13:40:08 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2023-01-22 09:34:13 +0100 |
| commit | 8a54644571fed484d55b3807f25f64cba8a9ca77 (patch) | |
| tree | e0cd4ec66909e11da073d54093c1aba626789cd7 /drivers/media/v4l2-core/v4l2-subdev.c | |
| parent | a418bb3f30d9ac570d51ff3f700851b78da2a8a9 (diff) | |
media: subdev: Require code change to enable [GS]_ROUTING
The Streams API is an experimental feature. To use the Streams API, the
user needs to change a variable in v4l2-subdev.c and recompile the kernel.
This commit should be reverted when the Streams API is deemed ready for
production use.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-subdev.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-subdev.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index f047ac1bf5ef..6cdb7a89f19c 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -23,6 +23,15 @@ #include <media/v4l2-fh.h> #include <media/v4l2-ioctl.h> +#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) +/* + * The Streams API is an experimental feature. To use the Streams API, set + * 'v4l2_subdev_enable_streams_api' to 1 below. + */ + +static bool v4l2_subdev_enable_streams_api; +#endif + /* * Maximum stream ID is 63 for now, as we use u64 bitmask to represent a set * of streams. @@ -766,6 +775,9 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg, struct v4l2_subdev_routing *routing = arg; struct v4l2_subdev_krouting *krouting; + if (!v4l2_subdev_enable_streams_api) + return -ENOIOCTLCMD; + if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS)) return -ENOIOCTLCMD; @@ -793,6 +805,9 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg, struct v4l2_subdev_krouting krouting = {}; unsigned int i; + if (!v4l2_subdev_enable_streams_api) + return -ENOIOCTLCMD; + if (!(sd->flags & V4L2_SUBDEV_FL_STREAMS)) return -ENOIOCTLCMD; |