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There are several optimizations: 1) Use predefined SRGB, don't calculate. This is the most common case. 2) Precompute HW X points at boot since they're fixed in ColModule 3) Precompute PQ - it never changes and is very CPU intensive in fixed pt. 4) Reduce number of points in ColModule to 512 (32x16) from 1024. This also requires reducing some regions for legacy DCEs to 16 pts at most. Performance 1) is super-fast, build_output_tf is 1-2us, down from 25000-30000. Programming also fast since only one reg write. 2)+3) gives build_output_tf for PQ in ~100us range, down from ~80000-110000 2) + 4) results in slightly over 50% improvement. It gives an idea of the savings when we can't use SRGB or PQ table (e.g. sdr white level > 80). There's also a bit of refactoring: renaming some stuff that was misleading and removing a lot of magic numbers that novices might not be able to understand where they come from and what they mean. Signed-off-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.