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media: rcar-vin: Disallow unbinding and binding of individual VINs

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The VIN driver have an internal concept of capture groups that covers
multiple instances of the driver. This is handled using the shared media
graph and a single notifier shared between all VIN instances.

This design do not work well if an individual VIN where to be unbound on
its own. The design could be improved up on to allow for this but would
require large changes in the v4l2-async framework. To avoid the
situation suppress the bind and unbind nodes in sysfs.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Niklas Söderlund 2021-11-28 14:24:47 +01:00 committed by Mauro Carvalho Chehab
parent 0d7b74ef8d
commit e37e82188b
1 changed files with 1 additions and 0 deletions
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drivers/media/platform/rcar-vin/rcar-core.c
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@ -1620,6 +1620,7 @@ static SIMPLE_DEV_PM_OPS(rvin_pm_ops, rvin_suspend, rvin_resume);
static struct platform_driver rcar_vin_driver = {
.driver = {
.name = "rcar-vin",
.suppress_bind_attrs = true,
.pm = &rvin_pm_ops,
.of_match_table = rvin_of_id_table,
},