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991dcb89ca
Based on a bspec update the DMC firmware's flip queue handling events need to be disabled before enabling DC5/6. i915 doesn't use the flip queue feature atm, so disable it already after loading the firmware. This removes some overhead of the event handler which runs at a 1 kHz frequency. Bspec: 49193, 72486, 72487 v2: - Fix the DMC pipe A register offsets for GEN12. - Disable the events on DG2 only on pipe A..D . v3: (Lucas) - Add TODO: to clarify the disabling sequence on all D13+ - s/intel_dmc_has_fw_payload/has_dmc_id_fw/ - s/simple_flipq/flipq/ - s/_GEN12,_GEN13/TGL_,ADLP_/ - s/MAINDMC/DMC/ v4: - Only disable flip queues on TGL/DG2, as on other platforms the corresponding event handlers don't exist. Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com> # v1 Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220521130808.637449-1-imre.deak@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.