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Add documentation for the DP link capabilities interface.
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260701153204.4124150-2-imre.deak@intel.com
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Add kernel-doc documentation describing the Intel DP link training
recovery state machine and the sequence of automatic retraining,
fallback selection, and userspace notification.
v2:
- Rebase on dedicated intel-display documentation change.
- Remove unnecessary indent in section bodies. (Jani)
- Add recovery flowcharts. (Jani)
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260601093836.3057345-23-imre.deak@intel.com
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Not all of the overview DOC: comments in the display driver are
incorporated into the documentation. Add the missing ones, including
some function documentation.
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/589c46cf9a46763f4fbb7e1756656e6d71ba1431.1778235406.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Prefer to use === instead of --- for top level section heading
underlines to allow using the latter for sub-headings later.
While at it, fix the underline lenghts where needed.
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/f49968792220ca3ff24efde813550850340d092e.1778235406.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Nowadays, the display support for drm/i915 and drm/xe is shared between
the drivers, even though the code is located under drm/i915/display.
The drm/i915 documentation has everything, including display topics, in
one huge page, while the drm/xe documentation is well-organized but
hardly mentions display. It's not great, to put it mildly.
Split out the Intel display documentation to a dedicated directory,
Documentation/gpu/intel-display. Also directly split the
functionality/feature documentation to dedicated pages to keep the main
index page high level and readable. We'll want to organize this further,
but just sort them alphabetically for starters.
Drop the boilerplate documentation sections that don't actually document
anything.
Cross-reference drm/i915, drm/xe, and intel-display.
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/21bfa7777eb0926eadd309d4c6f5c9cf48405cf0.1778235406.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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