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Add threshold events support for temperature and relative humidity. To enable them the higher and lower threshold registers must be programmed and the higher threshold must be greater then or equal to the lower threshold. Otherwise the event is disabled. Invalid hysteresis values are ignored by the device. There is no further configuration possible. Tested by setting thresholds/hysteresis and turning the heater on/off. Used iio_event_monitor in tools/iio to catch events while constantly displaying temperature and humidity values. Signed-off-by: Dimitri Fedrau <dima.fedrau@gmail.com> Tested-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Link: https://lore.kernel.org/r/20240214085350.19382-4-dima.fedrau@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 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.