There is a statement in the v4l2-controls.txt in my 4.4.55 kernel that v4l2_subdev_queryctrl and friends will be removed "Once all the V4L2 drivers that depend on subdev drivers are converted to the control framework". How would I be able to tell if my driver (isc-atmel.c) has been converted to the control framework? I would have expected that to be the case, given that I have backported the driver (from linux-media in the last week or two), but I am not seeing controls that I create in my subdev. As long as I am backporting the driver, I may as well do it right. Unless there is some reason why the control framework is known to be broken in 4.4. Any thoughts? --wpd