media: i2c: imx219: make HBLANK r/w to allow longer exposures

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The HBLANK control was read-only, and always configured such that the
sensor line length register was 3448. This limited the maximum exposure
time that could be achieved to around 1.26 secs.

Make HBLANK read/write so that the line time can be extended, and
thereby allow longer exposures (and slower frame rates). Retain the
overall line length setting when changing modes rather than resetting it
to a default.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

...

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Dave Stevenson 2025-02-04 12:34:38 +05:30 • committed by Hans Verkuil

parent 04f78503f9

commit cd5e2fd899

1 changed files with 28 additions and 20 deletions

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drivers/media/i2c/imx219.c

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