Recommended control V4L2_CID_IMAGE_STABILIZATION missing libcamera message

Laurent Pinchart laurent.pinchart at ideasonboard.com
Sun Feb 4 09:45:55 CET 2024


On Sun, Feb 04, 2024 at 08:44:01AM +0100, Hans de Goede wrote:
> Hi All,
> 
> While working on the ov2680 driver to make it work with libcamera, I noticed
> that after adding vblank + hblank control I still get a message about
> Recommended V4control V4L2_CID_IMAGE_STABILIZATION missing libcamera message
> with a pointer to Documentation/sensor_driver_requirements.rst where
> this is not documented.

That's not expected, libcamera doesn't require that control. 'git grep
IMAGE_STABILIZATION' returns a single hit, in
include/linux/v4l2-controls.h. Could you try to figure out what's
happening ?

> So what should be done about this warning on sensor drivers where
> image stabilization is not supported. Have it in read-only form
> and then always report false ?

-- 
Regards,

Laurent Pinchart


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