media: rcar-vin: Create a group notifier

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As CSI-2 subdevices are shared between several VIN instances, a shared
notifier to collect the CSI-2 async subdevices is required. So far, the
rcar-vin driver used the notifier of the last VIN instance to probe but
with the forth-coming introduction of parallel input subdevices support
in mc-compliant code path, each VIN may register its own notifier if any
parallel subdevice is connected there.

To avoid registering a notifier twice (once for parallel subdev and one
for the CSI-2 subdevs) create a group notifier, shared by all the VIN
instances.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Acked-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

...

This commit is contained in:

Jacopo Mondi 2018-06-12 05:43:25 -04:00 • committed by Mauro Carvalho Chehab

parent a561e9e094

commit 2241ea75b8

2 changed files with 23 additions and 28 deletions

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46

drivers/media/platform/rcar-vin/rcar-core.c

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5

drivers/media/platform/rcar-vin/rcar-vin.h

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