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linux-next/drivers/iio/chemical/Kconfig
Himanshu Jha 1b3bd85927 iio: chemical: Add support for Bosch BME680 sensor
Bosch BME680 is a 4-in-1 sensor with temperature, pressure, humidity
and gas sensing capability. It supports both I2C and SPI communication
protocol for effective data communication.

The device supports two modes:

1. Sleep mode
2. Forced mode

The measurements only takes place when forced mode is triggered and a
single TPHG cycle is performed by the sensor. The sensor automatically
goes to sleep after afterwards.

The device has various calibration constants/parameters programmed into
devices' non-volatile memory(NVM) during production and can't be altered
by the user. These constants are used in the compensation functions to
get the required compensated readings along with the raw data. The
compensation functions/algorithms are provided by Bosch Sensortec GmbH
via their API[1]. As these don't change during the measurement cycle,
therefore we read and store them at the probe. The default configs
supplied by Bosch are also set at probe.

0-day tested with build success.

GSoC-2018: https://summerofcode.withgoogle.com/projects/#6691473790074880
Mentor: Daniel Baluta
[1] https://github.com/BoschSensortec/BME680_driver
Datasheet:
https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME680-DS001-00.pdf

Note from Jonathan: The compensation functions are 'interesting' and
could do with a tidy up in future.  However, they work so we can leave that
for another day.

Cc: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-07-28 11:38:46 +01:00

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#
# Chemical sensors
#
menu "Chemical Sensors"
config ATLAS_PH_SENSOR
tristate "Atlas Scientific OEM SM sensors"
depends on I2C
select REGMAP_I2C
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
select IRQ_WORK
help
Say Y here to build I2C interface support for the following
Atlas Scientific OEM SM sensors:
* pH SM sensor
* EC SM sensor
* ORP SM sensor
To compile this driver as module, choose M here: the
module will be called atlas-ph-sensor.
config BME680
tristate "Bosch Sensortec BME680 sensor driver"
depends on (I2C || SPI)
select REGMAP
select BME680_I2C if I2C
select BME680_SPI if SPI
help
Say yes here to build support for Bosch Sensortec BME680 sensor with
temperature, pressure, humidity and gas sensing capability.
This driver can also be built as a module. If so, the module for I2C
would be called bme680_i2c and bme680_spi for SPI support.
config BME680_I2C
tristate
depends on I2C && BME680
select REGMAP_I2C
config BME680_SPI
tristate
depends on SPI && BME680
select REGMAP_SPI
config CCS811
tristate "AMS CCS811 VOC sensor"
depends on I2C
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
Say Y here to build I2C interface support for the AMS
CCS811 VOC (Volatile Organic Compounds) sensor
config IAQCORE
tristate "AMS iAQ-Core VOC sensors"
depends on I2C
help
Say Y here to build I2C interface support for the AMS
iAQ-Core Continuous/Pulsed VOC (Volatile Organic Compounds)
sensors
config VZ89X
tristate "SGX Sensortech MiCS VZ89X VOC sensor"
depends on I2C
help
Say Y here to build I2C interface support for the SGX
Sensortech MiCS VZ89X VOC (Volatile Organic Compounds)
sensors
endmenu