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media: adv7180: fix frame interval in progressive mode

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The ADV7280-M may internally convert interlaced video input to
progressive video. If this mode is enabled, the ADV7280-M delivers
progressive video frames at the field rate of 50 fields per second (PAL)
or 60 fields per second (NTSC).

Fix the reported frame interval if progressive video is enabled.

Signed-off-by: Thorsten Schmelzer <tschmelzer@topcon.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This commit is contained in:
Thorsten Schmelzer
2026-01-13 13:10:07 +01:00
committed by Hans Verkuil
parent 2473b46c48
commit 90289b67c5
1 changed files with 7 additions and 0 deletions
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drivers/media/i2c/adv7180.c
+7
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@@ -507,6 +507,13 @@ static int adv7180_get_frame_interval(struct v4l2_subdev *sd,
fi->interval.denominator = 25;
}
/*
* If the de-interlacer is active, the chip produces full video frames
* at the field rate.
*/
if (state->field == V4L2_FIELD_NONE)
fi->interval.denominator *= 2;
return 0;
}