media: imx: prpencvf: enable double write reduction

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For the write channels with 4:2:0 subsampled YUV formats, avoid chroma
overdraw by only writing chroma for even lines. Reduces necessary write
memory bandwidth by at least 25% (more with rotation enabled).

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

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Steve Longerbeam 2017-07-22 17:21:41 -04:00 • committed by Mauro Carvalho Chehab

parent 4560cb4a0c

commit b54a5c2dc8

1 changed files with 11 additions and 0 deletions

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drivers/staging/media/imx/imx-ic-prpencvf.c

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