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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2023-05-19 13:44:03 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2023-07-28 10:48:49 +0200 |
| commit | 28a1295795d85a25f2e7dd391c43969e95fcb341 (patch) | |
| tree | 4b38e6a9c1c10029d80b579e1bdfd42bfe80427b /lib/atomic64_test.c | |
| parent | media: v4l: async: Obtain async connection based on sub-device (diff) | |
| download | linux-28a1295795d85a25f2e7dd391c43969e95fcb341.tar.xz linux-28a1295795d85a25f2e7dd391c43969e95fcb341.zip | |
media: v4l: async: Allow multiple connections between entities
When the v4l2-async framework was introduced, the use case for it was to
connect a camera sensor with a parallel receiver. Both tended to be rather
simple devices with a single connection between them.
The framework has been since improved in multiple ways but there are
limitations that have remained, for instance the assumption an async
sub-device is connected towards a single notifier and via a single link
only.
This patch enables connecting a sub-device to one or more notifiers
simultaneously, with one or more connections per notifier. The notifier
information is moved from the sub-device to the connection and the
connections in sub-device are no longer a pointer but a linked list.
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 'lib/atomic64_test.c')
0 files changed, 0 insertions, 0 deletions