7bf50a968a
Not all of the parts supported by this driver use single supply. Hence we add chip_info fields to say what additional supplies exist and in the case of vref, ensure that is used for the reference voltage rather than vcc. One corner case is the ad7091r which has an internal reference that can be over-driven by an external reference connected on the vref pin. To handle that force_ext_vref is introduced and set if an optional vref regulator is present. Tested using really simple QEMU model and some fixed regulators. The devm_add_action_or_reset() callback is changed to take the regulator as it's parameter so we can use one callback for all the different regulators without having to store pointers to them in the iio_priv() structure. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Michael Hennerich <michael.hennerich@analog.com> Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Link: https://lore.kernel.org/r/20210425163154.73209-2-jic23@kernel.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.