media: imx: Allow interweave with top/bottom lines swapped

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Allow sequential->interlaced interweaving but with top/bottom
lines swapped to the output buffer.

This can be accomplished by adding one line length to IDMAC output
channel address, with a negative line length for the interlace offset.

This is to allow the seq-bt -> interlaced-bt transformation, where
bottom lines are still dominant (older in time) but with top lines
first in the interweaved output buffer.

With this support, the CSI can now allow seq-bt at its source pads,
e.g. the following transformations are allowed in CSI from sink to
source:

seq-tb -> seq-bt
seq-bt -> seq-bt
alternate -> seq-bt

Suggested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

...

This commit is contained in:

Steve Longerbeam 2019-01-09 13:30:13 -05:00 • committed by Mauro Carvalho Chehab

parent ab2f05cdb1

commit 3c6640a606

2 changed files with 54 additions and 11 deletions

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25

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

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40

drivers/staging/media/imx/imx-media-csi.c

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