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Several architectures have accelerated operations for MMIO operations writing to a single register, such as writesb, writesw, writesl, writesq, readsb, readsw, readsl and readsq but regmap currently cannot use them because we have no hooks for providing an accelerated noinc back-end for MMIO. Solve this by providing reg_[read/write]_noinc callbacks for the bus abstraction, so that the regmap-mmio bus can use this. Currently I do not see a need to support this for custom regmaps so it is only added to the bus. Callbacks are passed a void * with the array of values and a count which is the number of items of the byte chunk size for the specific register width. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20220816204832.265837-1-linus.walleij@linaro.org Signed-off-by: Mark Brown <broonie@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.