Commit f5bae264 authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: Driver for MAX16065 System Manager and compatibles 



This patch adds hardware monitoring support for Maxim MAX16065, MAX16066,
MAX16067, MAX16068, MAX16070, and MAX16071 flash-configurable system managers
with nonvolatile fault registers.

Signed-off-by: default avatarGuenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: default avatarJean Delvare <khali@linux-fr.org>
parent 82c7465b

Documentation/hwmon/max16065

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Kernel driver max16065

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



Supported chips:

  * Maxim MAX16065, MAX16066

    Prefixes: 'max16065', 'max16066'

    Addresses scanned: -

    Datasheet:

	http://datasheets.maxim-ic.com/en/ds/MAX16065-MAX16066.pdf

 *  Maxim MAX16067

    Prefix: 'max16067'

    Addresses scanned: -

    Datasheet:

	http://datasheets.maxim-ic.com/en/ds/MAX16067.pdf

 *  Maxim MAX16068

    Prefix: 'max16068'

    Addresses scanned: -

    Datasheet:

	http://datasheets.maxim-ic.com/en/ds/MAX16068.pdf

 *  Maxim MAX16070/MAX16071

    Prefixes: 'max16070', 'max16071'

    Addresses scanned: -

    Datasheet:

	http://datasheets.maxim-ic.com/en/ds/MAX16070-MAX16071.pdf





Author: Guenter Roeck <guenter.roeck@ericsson.com>





Description

-----------



[From datasheets] The MAX16065/MAX16066 flash-configurable system managers

monitor and sequence multiple system voltages. The MAX16065/MAX16066 can also

accurately monitor (+/-2.5%) one current channel using a dedicated high-side

current-sense amplifier. The MAX16065 manages up to twelve system voltages

simultaneously, and the MAX16066 manages up to eight supply voltages.



The MAX16067 flash-configurable system manager monitors and sequences multiple

system voltages. The MAX16067 manages up to six system voltages simultaneously.



The MAX16068 flash-configurable system manager monitors and manages up to six

system voltages simultaneously.



The MAX16070/MAX16071 flash-configurable system monitors supervise multiple

system voltages. The MAX16070/MAX16071 can also accurately monitor (+/-2.5%)

one current channel using a dedicated high-side current-sense amplifier. The

MAX16070 monitors up to twelve system voltages simultaneously, and the MAX16071

monitors up to eight supply voltages.



Each monitored channel has its own low and high critical limits. MAX16065,

MAX16066, MAX16070, and MAX16071 support an additional limit which is

configurable as either low or high secondary limit. MAX16065, MAX16066,

MAX16070, and MAX16071 also support supply current monitoring.





Usage Notes

-----------



This driver does not probe for devices, since there is no register which

can be safely used to identify the chip. You will have to instantiate

the devices explicitly. Please see Documentation/i2c/instantiating-devices for

details.





Sysfs entries

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



in[0-11]_input		Input voltage measurements.



in12_input		Voltage on CSP (Current Sense Positive) pin.

			Only if the chip supports current sensing and if

			current sensing is enabled.



in[0-11]_min		Low warning limit.

			Supported on MAX16065, MAX16066, MAX16070, and MAX16071

			only.



in[0-11]_max		High warning limit.

			Supported on MAX16065, MAX16066, MAX16070, and MAX16071

			only.



			Either low or high warning limits are supported

			(depending on chip configuration), but not both.



in[0-11]_lcrit		Low critical limit.



in[0-11]_crit		High critical limit.



in[0-11]_alarm		Input voltage alarm.



curr1_input		Current sense input; only if the chip supports current

			sensing and if current sensing is enabled.

			Displayed current assumes 0.001 Ohm current sense

			resistor.



curr1_alarm		Overcurrent alarm; only if the chip supports current

			sensing and if current sensing is enabled.

drivers/hwmon/Kconfig

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@@ -708,6 +708,22 @@ config SENSORS_MAX1111 
	  This driver can also be built as a module.  If so, the module

	  will be called max1111.



config SENSORS_MAX16065

	tristate "Maxim MAX16065 System Manager and compatibles"

	depends on I2C

	help

	  If you say yes here you get support for hardware monitoring

	  capabilities of the following Maxim System Manager chips.

	    MAX16065

	    MAX16066

	    MAX16067

	    MAX16068

	    MAX16070

	    MAX16071



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

	  will be called max16065.



config SENSORS_MAX1619

	tristate "Maxim MAX1619 sensor chip"

	depends on I2C

drivers/hwmon/Makefile

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@@ -83,6 +83,7 @@ obj-$(CONFIG_SENSORS_LTC4215) += ltc4215.o 
obj-$(CONFIG_SENSORS_LTC4245)	+= ltc4245.o

obj-$(CONFIG_SENSORS_LTC4261)	+= ltc4261.o

obj-$(CONFIG_SENSORS_MAX1111)	+= max1111.o

obj-$(CONFIG_SENSORS_MAX16065)	+= max16065.o

obj-$(CONFIG_SENSORS_MAX1619)	+= max1619.o

obj-$(CONFIG_SENSORS_MAX6639)	+= max6639.o

obj-$(CONFIG_SENSORS_MAX6642)	+= max6642.o

drivers/hwmon/max16065.c

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