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efa28efd9c
Supported media bus codes on the resizer sink pad are identical to the ISP source pad. The .enum_mbus_code() handler thus delegates the enumeration to the ISP's operation. This is problematic for two reasons: - Format enumeration on the ISP source pad is dependent on the format configured on the ISP sink pad for the same subdev state (TRY or ACTIVE), while format enumeration on the resizer sink pad should return all formats supported by the resizer subdev, regardless of the ISP configuration. - Delegating the operation involves creating a fake v4l2_subdev_state on the stack to pass to the ISP .enum_mbus_code() handler. This gets in the way of evolution of both the ISP enumeration handler and, more generally, the V4L2 subdev state infrastructure. Fix those two issues by implementing format enumeration manually for the resizer. Link: https://lore.kernel.org/r/20231126020948.2700-1-laurent.pinchart@ideasonboard.com Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> |
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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 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.