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27030ff787
The pinconf-groups debugfs file dumps each valid configuration item of
all pin groups. Some platforms and devices may have pin groups which
cannot be accessed, according to commit 691bf5d5a7 ("pinctrl: qcom:
Don't allow protected pins to be requested"). Fail for each
configuration item of an invalid pin group by checking the GPIO chip's
valid mask.
The validity of the pin group cannot be checked in the generic pinconf
dump (function "pinconf_generic_dump_one"), as it does not directly
interact with the gpiochip or the pinmux callbacks (which would give it
access to the request callback). Instead, an entry contains the ID and
name of the pingroup with no properties when all items fail.
Signed-off-by: Richard Acayan <mailingradian@gmail.com>
Link: https://lore.kernel.org/r/20231128020202.728156-3-mailingradian@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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.