Commit 39671a14 authored by Yikai Tsai's avatar Yikai Tsai Committed by Guenter Roeck
Browse files

hwmon: (isl28022) new driver for ISL28022 power monitor 



Driver for Renesas ISL28022 power monitor with I2C interface.
The device monitors voltage, current via shunt resistor
and calculated power.

Signed-off-by: default avatarCarsten Spieß <mail@carsten-spiess.de>
Signed-off-by: default avatarYikai Tsai <yikai.tsai.wiwynn@gmail.com>
Message-ID: <20241002081133.13123-3-yikai.tsai.wiwynn@gmail.com>
[groeck: Fixed alignment issues, dropped noise at end of probe]
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent f3bfd13c

Documentation/hwmon/index.rst

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@@ -96,6 +96,7 @@ Hardware Monitoring Kernel Drivers 
   ir35221

   ir38064

   ir36021

   isl28022

   isl68137

   it87

   jc42

Documentation/hwmon/isl28022.rst

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



Kernel driver isl28022

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



Supported chips:



  * Renesas ISL28022



    Prefix: 'isl28022'



    Addresses scanned: none



    Datasheet: Publicly available at the Renesas website



	       https://www.renesas.com/us/en/www/doc/datasheet/isl28022.pdf



Author:

    Carsten Spieß <mail@carsten-spiess.de>



Description

-----------



The ISL28022 is a power monitor with I2C interface. The device monitors

voltage, current via shunt resistor and calculated power.



Usage Notes

-----------



This driver does not auto-detect devices. You will have to instantiate the

device explicitly. Please see Documentation/i2c/instantiating-devices.rst for

details.



The shunt value in micro-ohms, shunt voltage range and averaging can be set

with device properties.

Please refer to the Documentation/devicetree/bindings/hwmon/isl,isl28022.yaml

for bindings if the device tree is used.



The driver supports only shunt and bus continuous ADC mode at 15bit resolution.

Averaging can be set from 1 to 128 samples (power of 2) on both channels.

Shunt voltage range of 40, 80, 160 or 320mV is allowed

The bus voltage range is 60V fixed.



Sysfs entries

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



The following attributes are supported. All attributes are read-only.



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

in0_input		bus voltage (milli Volt)



curr1_input		current (milli Ampere)

power1_input		power (micro Watt)

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



Debugfs entries

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



The following attributes are supported. All attributes are read-only.



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

shunt_voltage		shunt voltage (micro Volt)

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

MAINTAINERS

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@@ -12109,6 +12109,8 @@ M: Carsten Spieß <mail@carsten-spiess.de> 
L:	linux-hwmon@vger.kernel.org

S:	Maintained

F:	Documentation/devicetree/bindings/hwmon/renesas,isl28022.yaml

F:	Documentation/hwmon/isl28022.rst

F:	drivers/hwmon/isl28022.c









ISOFS FILESYSTEM









M:	Jan Kara <jack@suse.cz>
































drivers/hwmon/Kconfig



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@@ -855,6 +855,17 @@ config SENSORS_CORETEMP







	  sensor inside your CPU. Most of the family 6 CPUs









	  are supported. Check Documentation/hwmon/coretemp.rst for details.



















config SENSORS_ISL28022









	tristate "Renesas ISL28022"









	depends on I2C









	select REGMAP_I2C









	help









	  If you say yes here you get support for ISL28022 power monitor.









	  Check Documentation/hwmon/isl28022.rst for details.



















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









	  will be called isl28022.



















config SENSORS_IT87









	tristate "ITE IT87xx and compatibles"









	depends on HAS_IOPORT
































drivers/hwmon/Makefile



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@@ -103,6 +103,7 @@ obj-$(CONFIG_SENSORS_INA2XX)	+= ina2xx.o







obj-$(CONFIG_SENSORS_INA238)	+= ina238.o









obj-$(CONFIG_SENSORS_INA3221)	+= ina3221.o









obj-$(CONFIG_SENSORS_INTEL_M10_BMC_HWMON) += intel-m10-bmc-hwmon.o









obj-$(CONFIG_SENSORS_ISL28022)	+= isl28022.o









obj-$(CONFIG_SENSORS_IT87)	+= it87.o









obj-$(CONFIG_SENSORS_JC42)	+= jc42.o









obj-$(CONFIG_SENSORS_K8TEMP)	+= k8temp.o