linux/Documentation/i2c/index.rst
Jani Nikula a592a36e49 Documentation: use a source-read extension for the index link boilerplate
The root document usually has a special :ref:`genindex` link to the
generated index. This is also the case for Documentation/index.rst. The
other index.rst files deeper in the directory hierarchy usually don't.

For SPHINXDIRS builds, the root document isn't Documentation/index.rst,
but some other index.rst in the hierarchy. Currently they have a
".. only::" block to add the index link when doing SPHINXDIRS html
builds.

This is obviously very tedious and repetitive. The link is also added to
all index.rst files in the hierarchy for SPHINXDIRS builds, not just the
root document.

Put the boilerplate in a sphinx-includes/subproject-index.rst file, and
include it at the end of the root document for subproject builds in an
ad-hoc source-read extension defined in conf.py.

For now, keep having the boilerplate in translations, because this
approach currently doesn't cover translated index link headers.

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
[jc: did s/doctree/kern_doc_dir/ ]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260123143149.2024303-1-jani.nikula@intel.com>
2026-01-23 11:59:34 -07:00

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.. SPDX-License-Identifier: GPL-2.0
===================
I2C/SMBus Subsystem
===================
Introduction
============
.. toctree::
:maxdepth: 1
summary
i2c-protocol
smbus-protocol
instantiating-devices
busses/index
i2c-topology
muxes/i2c-mux-gpio
i2c-sysfs
i2c-address-translators
Writing device drivers
======================
.. toctree::
:maxdepth: 1
writing-clients
dev-interface
dma-considerations
fault-codes
functionality
Debugging
=========
.. toctree::
:maxdepth: 1
gpio-fault-injection
i2c-stub
Slave I2C
=========
.. toctree::
:maxdepth: 1
slave-interface
slave-eeprom-backend
slave-testunit-backend
Advanced topics
===============
.. toctree::
:maxdepth: 1
ten-bit-addresses
Legacy documentation
====================
.. toctree::
:maxdepth: 1
old-module-parameters