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While performing HDMI compliance testing, test equipment may request different bpc output for signal measurement. However, display driver typically determines the maximum available bpc based on HW bandwidth. This change leverages the existing debugfs (intel_force_link_bpp) to manage HDMI bpc, and making it easier to pass HDMI CTS. v2: Using exist variable max_requested_bpc. v3: Extend intel_force_link_bpp to support HDMI as suggested by Imre. v4: Update commit message suggested by Jani. v5: Remove unused header file. Cc: Shankar Uma <uma.shankar@intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Cc: Imre Deak <imre.deak@intel.com> Cc: Vidya Srinivas <vidya.srinivas@intel.com> Signed-off-by: Lee Shawn C <shawn.c.lee@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://lore.kernel.org/r/20250901055721.219995-2-shawn.c.lee@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 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.