From: Liam Beguin <lvb@xxxxxxxxxx> Add temperature rescaling support to the IIO Analog Front End driver. This series adds support for three kinds of temperature front end circuits: - temperature-sense-rtd for which the resistance is proportional to the temperature - temperature-sense-current for which the current is proportional to the temperature - temperature-sense-amplifier for which the voltage is proportional to the temperature At first I tried to use iio_convert_raw_to_processed() to get more precision out of processed values but ran into issues when one of my ADCs didn't provide a scale. I tried to address this in first patch. When adding offset support to iio-rescale, I also noticed that iio_read_channel_processed() assumes that the offset is always an integer which I tried to address in the second patch. If it makes sense to add support for fractional offsets, I could give it a try in another series. Related to: https://patchwork.kernel.org/project/linux-iio/list/?series=483087 Thanks for your time Liam Beguin (9): iio: inkern: always apply scale requested by consumer iio: inkern: error out on unsupported offset type iio: afe: rescale: use core to get processed value iio: afe: rescale: add offset support iio: afe: rescale: add support for temperature sensors dt-bindings: iio: afe: update MAINTAINERS file dt-bindings: iio: afe: add binding for temperature-sense-rtd dt-bindings: iio: afe: add binding for temperature-sense-current dt-bindings: iio: afe: add binding for temperature-sense-amplifier .../iio/afe/temperature-sense-amplifier.yaml | 55 +++++ .../iio/afe/temperature-sense-current.yaml | 61 ++++++ .../iio/afe/temperature-sense-rtd.yaml | 65 ++++++ MAINTAINERS | 9 +- drivers/iio/afe/iio-rescale.c | 190 +++++++++++++++--- drivers/iio/inkern.c | 12 +- 6 files changed, 354 insertions(+), 38 deletions(-) create mode 100644 Documentation/devicetree/bindings/iio/afe/temperature-sense-amplifier.yaml create mode 100644 Documentation/devicetree/bindings/iio/afe/temperature-sense-current.yaml create mode 100644 Documentation/devicetree/bindings/iio/afe/temperature-sense-rtd.yaml base-commit: 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 -- 2.30.1.489.g328c10930387
