linux-dev/drivers/iio/chemical/Makefile, branch master

drivers: iio: chemical: Add support for Sensirion SCD4x CO2 sensor

2021-10-19T07:30:44Z

This is a driver for the SCD4x CO2 sensor from Sensirion. The sensor is able to measure CO2 concentration, temperature and relative humdity. The sensor uses a photoacoustic principle for measuring CO2 concentration. An I2C interface is supported by this driver in order to communicate with the sensor. Signed-off-by: Roan van Dijk Link: https://lore.kernel.org/r/20211008101706.755942-4-roan@protonic.nl Signed-off-by: Jonathan Cameron

iio: chemical: Add Senseair Sunrise 006-0-007 driver

2021-10-19T07:27:31Z

Add support for the Senseair Sunrise 006-0-0007 driver through the IIO subsystem. Datasheet: https://rmtplusstoragesenseair.blob.core.windows.net/docs/Dev/publicerat/TDE5531.pdf Signed-off-by: Jacopo Mondi Link: https://lore.kernel.org/r/20210920135413.140310-4-jacopo+renesas@jmondi.org Signed-off-by: Jonathan Cameron

iio: chemical: Add driver support for sgp40

2021-08-08T14:19:18Z

sgp40 is a gas sensor used for measuring the air quality. This driver is reading the raw resistance value which can be passed to an userspace algorithm for further calculation. The raw value is also used to calculate an estimated absolute voc index in the range from 0 to 500. For this purpose the raw_mean value of the resistance for which the index value is 250 might be set up as a calibration step. This can be done with in_resistance_calibbias. Compensation of relative humidity and temperature is supported and can be used by writing to output values of out_humidityrelative_raw and out_temp_raw. There is a predecesor sensor type (sgp30) already existing. This driver module was not extended because the new sensor is quite different in its i2c telegrams. Signed-off-by: Andreas Klinger Reported-by: kernel test robot Link: https://lore.kernel.org/r/20210804154641.GA3237@arbad Signed-off-by: Jonathan Cameron

iio: sps30: add support for serial interface

2021-05-17T12:49:10Z

Sensor has support for both i2c and serial communication interfaces. Both offer very similar set of features. Minor differences don't impact overall functionality like doing measurements, etc. Support for i2c have already been added, this patch adds support for the latter ie. serial interface. Signed-off-by: Tomasz Duszynski Signed-off-by: Jonathan Cameron

iio: sps30: separate core and interface specific code

2021-05-17T12:49:10Z

Move code responsible for handling i2c communication to a separate file. Rationale for this change is preparation for adding support for serial communication. Signed-off-by: Tomasz Duszynski Signed-off-by: Jonathan Cameron

iio: chemical: scd30: add serial interface driver

2020-06-27T13:52:38Z

Add serial interface driver for the SCD30 sensor. Signed-off-by: Tomasz Duszynski Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron

iio: chemical: scd30: add I2C interface driver

2020-06-27T13:50:30Z

Add I2C interface driver for the SCD30 sensor. Signed-off-by: Tomasz Duszynski Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron

iio: chemical: scd30: add core driver

2020-06-27T13:46:44Z

Add Sensirion SCD30 carbon dioxide core driver. Signed-off-by: Tomasz Duszynski Signed-off-by: Jonathan Cameron

iio: chemical: add atlas-ezo-sensor initial support

2020-05-16T16:57:06Z

Add driver for Atlas EZO line of sensors with initial support for CO2 the sensor. This is effectively ASCII strings proxied over I2C due to these series of sensors being by default UART. Signed-off-by: Matt Ranostay Signed-off-by: Jonathan Cameron

iio: chemical: atlas-ph-sensor: rename atlas-ph-sensor to atlas-sensor

2019-12-29T15:20:06Z

Since the orginal scope of the driver was to only support the pH product from Atlas it has evolved to other sensors. Rename the file, driver name, and regmap to atlas-sensor which reflects this, although keep CONFIG_ATLAS_PH_SENSOR to not cause regressions with current configurations. Signed-off-by: Matt Ranostay Signed-off-by: Jonathan Cameron