f7aa2d2343
The driver currently only implements the Rec. 601 YCbCr encoding, extend it with support for the other encodings defined by V4L2 (Rec. 709, Rec. 2020 and SMPTE240m). The coefficients have been calculated by rounding the floating point values to the nearest Q1.7 fixed-point value, adjusting the rounding to ensure that the sum of each line in the matrix is preserved to avoid overflows. At the hardware level, the RGB to YUV conversion matrix is fully configurable, custom encoding could be supported by extending the ISP parameters if desired. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Dafna Hirschfeld <dafna@fastmail.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.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
``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.