Ankit Nautiyal 7f5ac36526 drm/i915/intel_cdclk: Add vdsc with bigjoiner constraints on min_cdlck
As per Bsepc:49259, Bigjoiner BW check puts restriction on the
compressed bpp for a given CDCLK, pixelclock in cases where
Bigjoiner + DSC are used.

Currently compressed bpp is computed first, and it is ensured that
the bpp will work at least with the max CDCLK freq.

Since the CDCLK is computed later, lets account for Bigjoiner BW
check while calculating Min CDCLK.

v2: Use pixel clock in the bw calculations. (Ville)

v3: Use helper to account for FEC overhead. (Stan)

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230817142459.89764-7-ankit.k.nautiyal@intel.com
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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.
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