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Next, let's start introducing the HPD pin mappings for Intel's new gen9_bc platform in order to make hotplugging display connectors work. Since gen9_bc is just a TGP PCH along with a CML CPU, except with the same HPD mappings as ICL, we simply add a skl_hpd_pin function that is shared between gen9 and gen9_bc which handles both the traditional gen9 HPD pin mappings and the Icelake HPD pin mappings that gen9_bc uses. Changes since v4: * Split this into its own commit * Introduce skl_hpd_pin() like vsyrjala suggested and use that instead of sticking our HPD pin mappings in TGP code Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> [originally from Tejas's work] Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@intel.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210209212832.1401815-4-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.