This patch series adds support for Sensirion SPS30 particulate matter sensor. Along with a driver itself, new channel type and modifiers for distinguishing between coarse and fine particles measurements are introduced. Sensor datasheet can be downloaded from https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/0_Datasheets/Particulate_Matter/Sensirion_PM_Sensors_SPS30_Datasheet.pdf v4: * this will likely go in next release cycle so increase version to 4.22 * use KBUILD_MODNAME in format specifier v3: * convert be32 to cpu using predefined macro * remove semicolon: reported by semicolon.cocci * use capitalization consistently (particulate matter) v2: * add support for PM1 and PM4 measurements * get rid of variable length arrays * do proper cleanup via devm_add_action_or_reset() * add extra level of precision (two decimal places) while displaying measurements * improve comments a little bit * slight refactoring and general improvements here and there Tomasz Duszynski (3): iio: add IIO_MASSCONCENTRATION channel type iio: chemical: add support for Sensirion SPS30 sensor iio: chemical: sps30: add device tree support Documentation/ABI/testing/sysfs-bus-iio | 17 +- .../bindings/iio/chemical/sensirion,sps30.txt | 12 + drivers/iio/chemical/Kconfig | 11 + drivers/iio/chemical/Makefile | 1 + drivers/iio/chemical/sps30.c | 406 ++++++++++++++++++ drivers/iio/industrialio-core.c | 5 + include/uapi/linux/iio/types.h | 5 + tools/iio/iio_event_monitor.c | 10 + 8 files changed, 466 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/iio/chemical/sensirion,sps30.txt create mode 100644 drivers/iio/chemical/sps30.c -- 2.20.0
