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Ville Syrjälä
6252bb78fc
The hardware automagically nukes the cfb on flip. We can use that whenever the plane/crtc configuration doesn't change too much. Let's hook that up. We'll need this for glk+ since we need to introduce an extra vblank wait after FBC disable. As we're currently disabling FBC around all plane updates we'd slow them down by an extra frame. Not a great user experience when your fps is always capped at vrefres/2. With flip nuke we don't need the extra vblank wait. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191127201222.16669-12-ville.syrjala@linux.intel.com Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.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.