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The ad7476 driver supports variants with different amount of supply regulators. On some variants there is only VCC, which is used as a reference voltage. Others have separate VREF regulator, and some rely on internal VREF. Some have both internal VREF and option to connect external one. The ad7476 driver reads the regulator voltage only when the user asks to get the scale. This means the driver needs to do some dancing while picking the correct reference regulator (or internal reference), and store it for the later use. According to the discussion [1] variable voltage references are rare, making it hard to justify the added complexity for supporting those. Drop the support for the variable voltage references and simplify things by using the managed regulator get and enable interfaces. Link: https://lore.kernel.org/linux-iio/20250331122247.05c6b09d@jic23-huawei/ #1 Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com> Reviewed-by: Nuno Sá <nuno.sa@analog.com> Reviewed-by: Andy Shevchenko <andy@kernel.org> Link: $URL #1 Link: https://patch.msgid.link/4a497cc5ac0f6506c1c94d10849e0ae1cacf1191.1754901948.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.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 reStructuredText 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.