[PATCH] media: stm32: dcmi: Register V4L2 subdev nodes

[Marek Vasut]

On 6/19/22 02:33, Laurent Pinchart wrote:
> On Sun, Jun 19, 2022 at 02:28:55AM +0200, Marek Vasut wrote:
>> On 6/19/22 01:20, Laurent Pinchart wrote:
>>> Hi Marek,
>>>
>>> Thank you for the patch.
>>>
>>> On Sun, Jun 19, 2022 at 12:23:35AM +0200, Marek Vasut wrote:
>>>> Unless the V4L2 device calls v4l2_device_register_subdev_nodes(),
>>>> the /dev/v4l-subdev* sub-device nodes are not registered and thus
>>>> not created. Add the missing call.
>>>
>>> This driver configures the subdevs internally. Exposing the subdev nodes
>>> to userspace would conflict with driver operation.
>>>
>>> If you need the subdev nodes only to query subdev information, you can
>>> use v4l2_device_register_ro_subdev_nodes(). Ideally I'd prefer this
>>> driver to expose subdev nodes to userspace and stop propagating formats
>>> internally, but that may break applications :-(
>>
>> I need those subdevs to configure e.g. test pattern on the sensor side.
> 
> Doesn't the dcmi driver expose the sensor controls on the video node ?

Apparently it does, so, discard this patch.