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Jouni Högander aeafa46ee3 drm/i915/psr: Take into account SU SDP scanline indication in vblank check
SU SDP scanline indication should be taken into account when checking
vblank length. In Bspec we have:

PSR2_CTL[ SU SDP scanline indication ] = 0: (TRANS_VBLANK Vertical Blank
End- TRANS_VBLANK Vertical Blank Start) > PSR2_CTL Block Count Number value
in lines

PSR2_CTL[ SU SDP scanline indication ] = 1: (TRANS_VBLANK Vertical Blank
End- TRANS_VBLANK Vertical Blank Start- 1) > PSR2_CTL Block Count Number
value in lines

Bspec: 49274

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240607134917.1327574-12-jouni.hogander@intel.com
History 2024-06-11 13:04:24 +03:00
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README

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.