This patch set adds support for sensirion sgp40 gas sensor. Many thanks for the in-depth reviews, especially of Jonathan who triggered some important improvements for v2: - provide more precision for voc value; this in turn triggered the folling point: - rework of e^x calculation with an optimization on the interesting range between e^(-6) and e^6 - restructure use of endian types - use __packed structures for sent telegrams - optimize usage of mutex - optimize switch-cases - replace attributes by read_raw() and write_raw() values - add documentation in Documentation/ABI/testing/sysfs-bus-iio-sgp40 as well as in the source code Andreas Klinger (2): dt-bindings: iio: chemical: Add trivial DT binding for sgp40 iio: chemical: Add driver support for sgp40 .../ABI/testing/sysfs-bus-iio-chemical-sgp40 | 31 ++ .../devicetree/bindings/trivial-devices.yaml | 2 + MAINTAINERS | 6 + drivers/iio/chemical/Kconfig | 11 + drivers/iio/chemical/Makefile | 1 + drivers/iio/chemical/sgp40.c | 372 ++++++++++++++++++ 6 files changed, 423 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40 create mode 100644 drivers/iio/chemical/sgp40.c -- 2.20.1
