Commit bf1bb26f authored by Andrei Lalaev's avatar Andrei Lalaev Committed by Guenter Roeck
Browse files

hwmon: add driver for HTU31 



Add base support for HTU31 temperature and humidity sensor.

Besides temperature and humidity values, the driver also exports a 24-bit
heater control to sysfs and serial number to debugfs.

Signed-off-by: default avatarAndrei Lalaev <andrey.lalaev@gmail.com>
Link: https://lore.kernel.org/r/20250217051110.46827-2-andrey.lalaev@gmail.com


[groeck: Fixed continuation line alignment]
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent fb36a0b3

Documentation/hwmon/htu31.rst

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.. SPDX-License-Identifier: GPL-2.0-or-later



Kernel driver HTU31

====================



Supported chips:



  * Measurement Specialties HTU31



    Prefix: 'htu31'



    Addresses scanned: -



    Datasheet: Publicly available from https://www.te.com/en/product-CAT-HSC0007.html



Author:



  - Andrei Lalaev <andrey.lalaev@gmail.com>



Description

-----------



HTU31 is a humidity and temperature sensor.



Supported temperature range is from -40 to 125 degrees Celsius.



Communication with the device is performed via I2C protocol. Sensor's default address

is 0x40.



sysfs-Interface

---------------



=================== =================

temp1_input:        temperature input

humidity1_input:    humidity input

heater_enable:      heater control

=================== =================

Documentation/hwmon/index.rst

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@@ -86,6 +86,7 @@ Hardware Monitoring Kernel Drivers 
   hih6130

   hp-wmi-sensors

   hs3001

   htu31

   ibmaem

   ibm-cffps

   ibmpowernv

MAINTAINERS

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@@ -10690,6 +10690,12 @@ W: http://www.st.com/ 
F:	Documentation/devicetree/bindings/iio/humidity/st,hts221.yaml

F:	drivers/iio/humidity/hts221*









HTU31 Hardware Temperature and Humidity Sensor









M:	Andrei Lalaev <andrey.lalaev@gmail.com>









L:	linux-hwmon@vger.kernel.org









S:	Maintained









F:	drivers/hwmon/htu31.c

















HUAWEI ETHERNET DRIVER









M:	Cai Huoqing <cai.huoqing@linux.dev>









L:	netdev@vger.kernel.org
































drivers/hwmon/Kconfig



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@@ -799,6 +799,17 @@ config SENSORS_HS3001







	  This driver can also be built as a module. If so, the module









	  will be called hs3001.



















config SENSORS_HTU31









	tristate "Measurement Specialties HTU31 humidity and temperature sensor"









	depends on I2C









	select CRC8









	help









	  If you say yes here you get support for the HTU31 humidity









	  and temperature sensors.



















	  This driver can also be built as a module. If so, the module









	  will be called htu31.



















config SENSORS_IBMAEM









	tristate "IBM Active Energy Manager temperature/power sensors and control"









	select IPMI_SI
































drivers/hwmon/Makefile



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@@ -92,6 +92,7 @@ obj-$(CONFIG_SENSORS_GPIO_FAN)	+= gpio-fan.o







obj-$(CONFIG_SENSORS_GXP_FAN_CTRL) += gxp-fan-ctrl.o









obj-$(CONFIG_SENSORS_HIH6130)	+= hih6130.o









obj-$(CONFIG_SENSORS_HS3001)	+= hs3001.o









obj-$(CONFIG_SENSORS_HTU31)	+= htu31.o









obj-$(CONFIG_SENSORS_ULTRA45)	+= ultra45_env.o









obj-$(CONFIG_SENSORS_I5500)	+= i5500_temp.o









obj-$(CONFIG_SENSORS_I5K_AMB)	+= i5k_amb.o