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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2023-05-15 12:06:50 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2023-07-28 11:47:56 +0300 |
| commit | c91fd7b7a8ae17ab8be0b6e765e4a38783749330 (patch) | |
| tree | 576dc031d35525df11aefea46ad4ea7d5d7558f6 /include/media | |
| parent | 9bf19fbf0c8bc4392210c1ea104a8db732624f3d (diff) | |
| download | linux-c91fd7b7a8ae17ab8be0b6e765e4a38783749330.tar.xz | |
media: v4l: async: Obtain async connection based on sub-device
Add v4l2_async_connection_unique() function for obtaining a struct
v4l2_async_connection, typically allocated by drivers together with their
own information on an external sub-device.
The relation between connections and sub-devices still remains 1:1 but
this code becomes more complex when the relation soon changes.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de> # imx6qp
Tested-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> # rcar + adv746x
Tested-by: Aishwarya Kothari <aishwarya.kothari@toradex.com> # Apalis i.MX6Q with TC358743
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> # Renesas RZ/G2L SMARC
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/v4l2-async.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/media/v4l2-async.h b/include/media/v4l2-async.h index c06b3b832228..5bc2efe720c2 100644 --- a/include/media/v4l2-async.h +++ b/include/media/v4l2-async.h @@ -211,6 +211,17 @@ __v4l2_async_nf_add_i2c(struct v4l2_async_notifier *notifier, sizeof(type))) /** + * v4l2_async_connection_unique - return a unique &struct v4l2_async_connection + * for a sub-device + * @sd: the sub-device + * + * Return an async connection for a sub-device, when there is a single + * one only. + */ +struct v4l2_async_connection * +v4l2_async_connection_unique(struct v4l2_subdev *sd); + +/** * v4l2_async_nf_register - registers a subdevice asynchronous notifier * * @v4l2_dev: pointer to &struct v4l2_device |