bc7f670ee0
[Why] Our old logic: if pageflip, update freesync and plane address. Otherwise, update everything. This over-updated on non-pageflip cases, and it failed to update if pageflip and non-pageflip changes occurred on the same commit [How] Update flip_addrs on pageflips. Update scaling_info when it changes. Update color fields on color changes. Updates plane_info always because we don't have a good way of knowing when it needs to be updated. Unfortunately, this means that every stream commit involves two calls into DC. In particular, on pageflips there is a second, pointless update that changes nothing but costs several microseconds (about a 50% increase in time taken). The update is fast, but there are comparisons and some useless programming. Leave TODOs indicating dissatisfaction. Signed-off-by: David Francis <David.Francis@amd.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.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 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.