Hello, I don't know how to get access to the v4l controls on a I2C camera sensor. My driver structure looks following: bridge driver -> csi-driver -> sensor driver (includes controls) register-async-notifer for csi driver register-async-notifer for sensor driver register video device The v4l2 API say: When a sub-device is registered with a V4L2 driver by calling v4l2_device_register_subdev() and the ctrl_handler fields of both v4l2_subdev and v4l2_device are set, then the controls of the subdev will become automatically available in the V4L2 driver as well. If the subdev driver contains controls that already exist in the V4L2 driver, then those will be skipped (so a V4L2 driver can always override a subdev control). But how can I get access to the controls by asynchronous registration, because the controls are not added to the video device automatically? Normally I can use: v4l2-ctl -l -d /dev/video0 I don't know if this forum is the right place for this question, so please answer with a private e-mail su@xxxxxxxxxx ------------------------------------------------------------------------ Sebastian Süsens Tel. +49 4321 559 56-27 mycable GmbH Fax +49 4321 559 56-10 Gartenstrasse 10 24534 Neumuenster, Germany Email su@xxxxxxxxxx ------------------------------------------------------------------------ mycable GmbH, Managing Director: Michael Carstens-Behrens USt-IdNr: DE 214 231 199, Amtsgericht Kiel, HRB 1797 NM ------------------------------------------------------------------------ This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this e-mail in error, please notify the sender and delete all copies from your system. ------------------------------------------------------------------------
