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Add support for the sensor’s inactivity feature in the driver. When both activity and inactivity detection are enabled, the sensor sets a link bit that ties the two functions together. This also enables auto-sleep mode, allowing the sensor to automatically enter sleep state upon detecting inactivity. Inactivity detection relies on a configurable threshold and a specified time period. If sensor measurements remain below the threshold for the defined duration, the sensor transitions to the inactivity state. When an Output Data Rate (ODR) is set, the inactivity time period is automatically adjusted to a sensible default. Higher ODRs result in shorter inactivity timeouts, while lower ODRs allow longer durations-within reasonable upper and lower bounds. This is important because features like auto-sleep operate effectively only between 12.5 Hz and 400 Hz. These defaults are applied when the sample rate is modified, but users can override them by explicitly setting a custom inactivity timeout. Similarly, configuring the g-range provides default threshold values for both activity and inactivity detection. These are implicit defaults meant to simplify configuration, but they can also be manually overridden as needed. Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com> Link: https://patch.msgid.link/20250727210014.27766-4-l.rubusch@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.