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cb6d000fca
Add a V4L2 mem-to-mem driver for the Vivante DW100 Dewarp Processor IP core found on i.MX8MP SoC. The processor core applies a programmable geometrical transformation on input images to correct distorsion introduced by lenses. The transformation function is exposed as a grid map with 16x16 pixel macroblocks indexed using X, Y vertex coordinates. The dewarping map can be set from application through a dedicated v4l2 control. If not set or invalid, the driver computes an identity map prior to starting the processing engine. The driver supports scaling, cropping and pixel format conversion. Signed-off-by: Xavier Roumegue <xavier.roumegue@oss.nxp.com> Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> 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.