media: rcar-csi2: Use standby mode instead of resetting

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Later versions of the datasheet updates the reset procedure to more
closely resemble the standby mode. Update the driver to enter and exit
the standby mode instead of resetting the hardware before and after
streaming is started and stopped. This replaces the software reset
(SRST.SRST) control.

While at it break out the full start and stop procedures from
rcsi2_s_stream() into the existing helper functions.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

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Niklas Söderlund 2019-03-12 19:49:30 -04:00 • committed by Mauro Carvalho Chehab

parent ffaebccdde

commit d245a940d9

2 changed files with 42 additions and 26 deletions

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1

drivers/media/platform/rcar-vin/Kconfig

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69

drivers/media/platform/rcar-vin/rcar-csi2.c

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