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7e85ac9da1
The era of hand-rolled HIWORD_UPDATE macros is over, at least for those drivers that use constant masks. Like many other Rockchip drivers, rockchip-dfi brings with it its own HIWORD_UPDATE macro. This variant doesn't shift the value (and like the others, doesn't do any checking). Remove it, and replace instances of it with hw_bitfield.h's FIELD_PREP_WM16. Since FIELD_PREP_WM16 requires contiguous masks and shifts the value for us, some reshuffling of definitions needs to happen. This gives us better compile-time error checking, and in my opinion, nicer code. Tested on an RK3568 ODROID-M1 board (LPDDR4X at 1560 MHz, an RK3588 Radxa ROCK 5B board (LPDDR4X at 2112 MHz) and an RK3588 Radxa ROCK 5T board (LPDDR5 at 2400 MHz). perf measurements were consistent with the measurements of stress-ng --stream in all cases. Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.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.