Commit b0bd407e authored by Alexandru Tachici's avatar Alexandru Tachici Committed by Guenter Roeck
Browse files

hwmon: (ltc2992) Add support 



LTC2992 is a rail-to-rail system monitor that
measures current, voltage, and power of two supplies.

Two ADCs simultaneously measure each supply’s current.
A third ADC monitors the input voltages and four
auxiliary external voltages.

Signed-off-by: default avatarAlexandru Tachici <alexandru.tachici@analog.com>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent d014538a

Documentation/hwmon/index.rst

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@@ -101,6 +101,7 @@ Hardware Monitoring Kernel Drivers 
   lm95234

   lm95245

   lochnagar

   ltc2992

   ltc2945

   ltc2947

   ltc2978

Documentation/hwmon/ltc2992.rst

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.. SPDX-License-Identifier: GPL-2.0



Kernel driver ltc2992

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



Supported chips:

  * Linear Technology LTC2992

    Prefix: 'ltc2992'

    Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ltc2992.pdf



Author: Alexandru Tachici <alexandru.tachici@analog.com>





Description

-----------



This driver supports hardware monitoring for Linear Technology LTC2992 power monitor.



LTC2992 is a rail-to-rail system monitor that measures current,

voltage, and power of two supplies.



Two ADCs simultaneously measure each supply’s current. A third ADC monitors

the input voltages and four auxiliary external voltages.





Sysfs entries

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



The following attributes are supported. Limits are read-write,

all other attributes are read-only.



in_reset_history	Reset all highest/lowest values.



inX_input		Measured voltage.

inX_lowest		Minimum measured voltage.

inX_highest		Maximum measured voltage.

inX_min			Minimum voltage allowed.

inX_max			Maximum voltage allowed.

inX_min_alarm		An undervoltage occurred. Cleared on read.

inX_max_alarm		An overvoltage occurred. Cleared on read.



currX_input		Measured current.

currX_lowest		Minimum measured current.

currX_highest		Maximum measured current.

currX_min		Minimum current allowed.

currX_max		Maximum current allowed.

currX_min_alarm		An undercurrent occurred. Cleared on read.

currX_max_alarm		An overcurrent occurred. Cleared on read.



powerX_input		Measured power.

powerX_input_lowest	Minimum measured voltage.

powerX_input_highest	Maximum measured voltage.

powerX_min		Minimum power.

powerX_max		Maximum power.

powerX_min_alarm	An underpower occurred. Cleared on read.

powerX_max_alarm	An overpower occurred. Cleared on read.

drivers/hwmon/Kconfig

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@@ -871,6 +871,17 @@ config SENSORS_LTC2990 
	  This driver can also be built as a module. If so, the module will

	  be called ltc2990.



config SENSORS_LTC2992

	tristate "Linear Technology LTC2992"

	depends on I2C

	help

	  If you say yes here you get support for Linear Technology LTC2992

	  I2C System Monitor. The LTC2992 measures current, voltage, and

	  power of two supplies.



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

	  be called ltc2992.



config SENSORS_LTC4151

	tristate "Linear Technology LTC4151"

	depends on I2C

drivers/hwmon/Makefile

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@@ -119,6 +119,7 @@ obj-$(CONFIG_SENSORS_LTC2947) += ltc2947-core.o 
obj-$(CONFIG_SENSORS_LTC2947_I2C) += ltc2947-i2c.o

obj-$(CONFIG_SENSORS_LTC2947_SPI) += ltc2947-spi.o

obj-$(CONFIG_SENSORS_LTC2990)	+= ltc2990.o

obj-$(CONFIG_SENSORS_LTC2992)	+= ltc2992.o

obj-$(CONFIG_SENSORS_LTC4151)	+= ltc4151.o

obj-$(CONFIG_SENSORS_LTC4215)	+= ltc4215.o

obj-$(CONFIG_SENSORS_LTC4222)	+= ltc4222.o

drivers/hwmon/ltc2992.c

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