media: s5p-g2d: Implement wait_prepare and wait_finish

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This driver is currently specifying a vb2_queue lock,
which means it straightforward to implement wait_prepare
and wait_finish.

Having these callbacks releases the queue lock while blocking,
which improves latency by allowing for example streamoff
or qbuf operations while waiting in dqbuf.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

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Ezequiel Garcia 2018-06-15 15:07:26 -04:00 • committed by Mauro Carvalho Chehab

parent f1db5d978d

commit b53e19e161

1 changed files with 2 additions and 0 deletions

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drivers/media/platform/s5p-g2d/g2d.c

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