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Ville Syrjälä 778c29fca7 drm/i915: Extract intel_crtc_vblank_delay()
Pull the vblank delay computation into a separate function.
We'll need more logic here soon and we don't want to pollute
intel_crtc_compute_config() with low level details.

We'll use HAS_DSB() to determine if any delay might be required
or not because delayed vblank only really exists for the
purposes of the DSB. It also doesn't event exists on any pre-tgl
platforms, which also don't have DSB. I was midly tempted
to check for the enable_dsb modparam here actually, but as
that can be changed dynamically via debugfs we'd need to either
reconfigure it on the fly or force a modeset. Neither will happen
currently, so we'll just assume DSB may be used of the platform
supports it.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241210211007.5976-2-ville.syrjala@linux.intel.com
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
History 2025-01-15 19:12:30 +02:00
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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.