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Following changes done for vpif driver to support vpif capture:-
1) Current version of display driver defined vpif register
space as part for vpif display platform driver resource
This is not correct since vpif is common across capture
and display drivers. So the resource iomap function is
moved to this module
2) Since there are common registers, a spinlock is added for
mutual exclusion.
This has incorporated comments against version v0 of the patch series
Resending to merge to V4L linux-next
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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