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Since we're about to start adding support for Intel's magic HDR backlight interface over DPCD, we need to ensure we're properly programming this field so that Intel specific sink services are exposed. Otherwise, 0x300-0x3ff will just read zeroes. We also take care not to reprogram the source OUI if it already matches what we expect. This is just to be careful so that we don't accidentally take the panel out of any backlight control modes we found it in. v2: * Add careful parameter to intel_edp_init_source_oui() to avoid re-writing the source OUI if it's already been set during driver initialization Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: thaytan@noraisin.net Cc: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201204223603.249878-2-lyude@redhat.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.