a399b36ec8
Create the subdevice state with v4l2_subdev_init_finalize() and implement the init_state() operation to guarantee the state is initialized. Store the current image format in the subdev active state and remove it from the driver private structure. To guarantee the same image format is applied to all source pads, propagate the format from the sink pad to the sources, disallowing changing format on a source pad. To support both gen3 and gen4, which feature a different number of source pads, introduce an helper function to return the correct number of pads. Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Link: https://lore.kernel.org/r/20240617161135.130719-5-jacopo.mondi@ideasonboard.com Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText 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.