media: ti-vpe: cal: add camerarx locking

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We don't have any locking in camerarx for the subdev ops. We have
managed fine so far without locking, but in the future multiple video
capture devices can use the same camerarx, and locking is a must.

Add a mutex to protect the camerarx subdev ops. Some of the functions
were slightly restructured to make lock handling cleaner.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

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Tomi Valkeinen 2021-06-14 13:23:42 +02:00 • committed by Mauro Carvalho Chehab

parent 892c37f8a3

commit 6cb0eee34c

2 changed files with 64 additions and 23 deletions

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81

drivers/media/platform/ti-vpe/cal-camerarx.c

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6

drivers/media/platform/ti-vpe/cal.h

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