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d28cdc43b4
Add a mechanism by which we can enable the HPD sense for individual encoders. This will be used during eDP probing to figure out if anything is actually connected. The normal intel_hpd_irq_setup() thing doesn't work since we only do that after probing the outputs, and we only enable HPD sense for encoders that were successfully probed. The other idea that crossed my minds was to just turn on HPD sense for all pins before output probing and let hpd_irq_setup() clean it up afterwards. But that doesn't work for BXT/GLK where the HPD invert information comes from the VBT child device. So looks like this really needs to be per-encoder. v2: Give it a better name (Jani) v3: Deal with mtl Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com> #v2 Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230417131728.7705-3-ville.syrjala@linux.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.