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15b0801285
ad7380x(-4) parts are able to do oversampling to increase accuracy. This chips supports a normal oversampling mode and a rolling mode and also allows enabling and disabling extra resolution bits when oversampling is enabled. We have intentionally left out the rolling mode for now as there is not a compelling use case for it. User can process a captured data buffer to get the same effect. We are also currently not supporting changing the oversampling mode independently of the resolution bits. The resolution boost feature can only be enabled when oversampling is enabled and oversampling is not as useful without the resolution boost. So for now we consider the features tightly coupled. When oversampling is enabled, the resolution boost is enabled and when oversampling is disabled, the resolution boost is disabled. Since the resolution boost feature causes 16-bit chips to now have 18-bit data which means the storagebits has to change from 16 to 32 bits, we use the new ext_scan_type feature to allow changing the scan_type at runtime based on if the resolution boost is enabled or not. SPI message optimization has to be moved since now some of the xfer parameters change based on the resolution boost mode. A few neighboring comments are also fixed up while we are touching this code. Signed-off-by: Julien Stephan <jstephan@baylibre.com> Co-developed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: David Lechner <dlechner@baylibre.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240530-iio-add-support-for-multiple-scan-types-v3-5-cbc4acea2cfa@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> |
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| README | ||
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.