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Sensor drivers which implement set_selection V4L2_SEL_TGT_CROP expect v4l2_subdev_state.pads[pad].try_crop to have valid contents when calling set_fmt with which == V4L2_SUBDEV_FORMAT_TRY since the crop-rectangle may influence the available image size. Just passing an uninitalized struct v4l2_subdev_pad_config from the stack to set_fmt with which == V4L2_SUBDEV_FORMAT_TRY will result in wrong results with such drivers. Store a per sensor v4l2_subdev_pad_config and add a new atomisp_init_sensor_crop() function to initialize this before registering /dev/* nodes with userspace. Sensor drivers which implement the selection API will allow the atomisp to properly deal with the extra padding the ISP wants on a per sensor basis instead of hardcoding this. atomisp_init_sensor_crop() stores the native and active rects of the sensor in preparation for using these for this. Link: https://lore.kernel.org/r/20230529103741.11904-16-hdegoede@redhat.com Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
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https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.