>From reading the discussion of the comparison of the selection API with the cropping API, (at https://linuxtv.org/downloads/v4l-dvb-apis/uapi/v4l/selection-api-005.html) it seems that the cropping API has been deprecated in favor of the selection API, so if I want to add a cropping capability to the atmel-isc, I should look at adding support for vidio_g_selection and vidio_s_selction to the driver. How do I manage the fact that the video frame size (from which I should derive TGT_CROP_BOUNDS, TGT_CROP_DEFAULT, and perhaps even TGT_NATIVE_SIZE) must be specified by atmel-isc's sub device? Should I v4l2subdev_call the get_selection function of the underlying sensor? Is that what is typically done? Or is there a better way to do this? --wpd