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Commit 85f03bcc authored by Kevin Lo's avatar Kevin Lo Committed by Mark M. Hoffman
Browse files

hwmon: Add support for Winbond W83L786NG/NR 



Signed-off-by: default avatarKevin Lo <kevlo@kevlo.org>
Signed-off-by: default avatarMark M. Hoffman <mhoffman@lightlink.com>
parent ce9c2f44

Documentation/hwmon/w83l786ng

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Kernel driver w83l786ng

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



Supported chips:

  * Winbond W83L786NG/W83L786NR

    Prefix: 'w83l786ng'

    Addresses scanned: I2C 0x2e - 0x2f

    Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L786NRNG09.pdf



Author: Kevin Lo <kevlo@kevlo.org>





Module Parameters

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



* reset boolean

  (default 0)

  Use 'reset=1' to reset the chip (via index 0x40, bit 7). The default

  behavior is no chip reset to preserve BIOS settings





Description

-----------



This driver implements support for Winbond W83L786NG/W83L786NR chips.



The driver implements two temperature sensors, two fan rotation speed

sensors, and three voltage sensors.



Temperatures are measured in degrees Celsius and measurement resolution is 1

degC for temp1 and temp2.



Fan rotation speeds are reported in RPM (rotations per minute). Fan readings

readings can be divided by a programmable divider (1, 2, 4, 8, 16, 32, 64

or 128 for fan 1/2) to give the readings more range or accuracy.



Voltage sensors (also known as IN sensors) report their values in millivolts.

An alarm is triggered if the voltage has crossed a programmable minimum

or maximum limit.



/sys files

----------



pwm[1-2] - this file stores PWM duty cycle or DC value (fan speed) in range:

	    0 (stop) to 255 (full)

pwm[1-2]_enable - this file controls mode of fan/temperature control:

            * 0 Manual Mode

            * 1 Thermal Cruise

            * 2 Smart Fan II

            * 4 FAN_SET

pwm[1-2]_mode - Select PWM of DC mode

            * 0 DC

            * 1 PWM

tolerance[1-2] - Value in degrees of Celsius (degC) for +- T

drivers/hwmon/Kconfig

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@@ -683,6 +683,16 @@ config SENSORS_W83L785TS 
	  This driver can also be built as a module.  If so, the module

	  will be called w83l785ts.



config SENSORS_W83L786NG

	tristate "Winbond W83L786NG, W83L786NR"

	depends on I2C && EXPERIMENTAL

	help

	  If you say yes here you get support for the Winbond W83L786NG

	  and W83L786NR sensor chips.



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

	  will be called w83l786ng.



config SENSORS_W83627HF

	tristate "Winbond W83627HF, W83627THF, W83637HF, W83687THF, W83697HF"

	select HWMON_VID

drivers/hwmon/Makefile

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@@ -68,6 +68,7 @@ obj-$(CONFIG_SENSORS_VT1211) += vt1211.o 
obj-$(CONFIG_SENSORS_VT8231)	+= vt8231.o

obj-$(CONFIG_SENSORS_W83627EHF)	+= w83627ehf.o

obj-$(CONFIG_SENSORS_W83L785TS)	+= w83l785ts.o

obj-$(CONFIG_SENSORS_W83L786NG)	+= w83l786ng.o



ifeq ($(CONFIG_HWMON_DEBUG_CHIP),y)

EXTRA_CFLAGS += -DDEBUG

drivers/hwmon/w83l786ng.c

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