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media: rcar-vin: Select correct interrupt mode for V4L2_FIELD_ALTERNATE 

When adding proper support for V4L2_FIELD_ALTERNATE it was missed that
this field format should trigger an interrupt for each field, not just
for the whole frame. Fix this by marking it as progressive in the
capture setup, which will then select the correct interrupt mode.

Tested on both Gen2 and Gen3 with the result of a doubling of the frame
rate for V4L2_FIELD_ALTERNATE. From a PAL video source the frame rate is
now 50, which is expected for alternate field capture.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Niklas Söderlund 2023-02-11 21:55:34 +01:00 committed by Mauro Carvalho Chehab
parent cb88d8289f
commit e10707d586
1 changed files with 1 additions and 3 deletions
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4
drivers/media/platform/renesas/rcar-vin/rcar-dma.c
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@ -728,11 +728,9 @@ static int rvin_setup(struct rvin_dev *vin)
case V4L2_FIELD_SEQ_TB:
case V4L2_FIELD_SEQ_BT:
case V4L2_FIELD_NONE:
vnmc = VNMC_IM_ODD_EVEN;
progressive = true;
break;
case V4L2_FIELD_ALTERNATE:
vnmc = VNMC_IM_ODD_EVEN;
progressive = true;
break;
default:
vnmc = VNMC_IM_ODD;