Add driver for Alas Scientific EZO sensors with initial support for CO2 sensors. Changes from v1: * add comments to mutex * change IIO_CHAN_INFO_SCALE return from IIO_VAL_FRACTIONAL to VAL_INT_PLUS_MICRO * fix return path atlas_ezo_read_raw() to EINVAL in correct locations Matt Ranostay (2): dt-bindings: iio: chemical: add CO2 EZO module documentation iio: chemical: add atlas-ezo-sensor initial support .../bindings/iio/chemical/atlas,sensor.yaml | 6 +- drivers/iio/chemical/Kconfig | 11 ++ drivers/iio/chemical/Makefile | 1 + drivers/iio/chemical/atlas-ezo-sensor.c | 178 ++++++++++++++++++ 4 files changed, 194 insertions(+), 2 deletions(-) create mode 100644 drivers/iio/chemical/atlas-ezo-sensor.c -- 2.20.1
