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Commit 1c301fc5 authored by Jordan Crouse's avatar Jordan Crouse Committed by Jean Delvare
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hwmon: Add a driver for the ADT7475 hardware monitoring chip 



Hwmon driver for the ADT7475 chip.

Signed-off-by: default avatarJordan Crouse <jordan.crouse@amd.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent 76ff08da

Documentation/hwmon/adt7475

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This describes the interface for the ADT7475 driver:



(there are 4 fans, numbered fan1 to fan4):



fanX_input		Read the current speed of the fan (in RPMs)

fanX_min		Read/write the minimum speed of the fan.  Dropping

			below this sets an alarm.



(there are three PWMs, numbered pwm1 to pwm3):



pwmX			Read/write the current duty cycle of the PWM.  Writes

			only have effect when auto mode is turned off (see

			below).  Range is 0 - 255.



pwmX_enable		Fan speed control method:



			0 - No control (fan at full speed)

			1 - Manual fan speed control (using pwm[1-*])

			2 - Automatic fan speed control



pwmX_auto_channels_temp	Select which channels affect this PWM



			1 - TEMP1 controls PWM

			2 - TEMP2 controls PWM

			4 - TEMP3 controls PWM

			6 - TEMP2 and TEMP3 control PWM

			7 - All three inputs control PWM



pwmX_freq		Read/write the PWM frequency in Hz. The number

			should be one of the following:



			11 Hz

			14 Hz

			22 Hz

			29 Hz

			35 Hz

			44 Hz

			58 Hz

			88 Hz



pwmX_auto_point1_pwm	Read/write the minimum PWM duty cycle in automatic mode



pwmX_auto_point2_pwm	Read/write the maximum PWM duty cycle in automatic mode



(there are three temperature settings numbered temp1 to temp3):



tempX_input		Read the current temperature.  The value is in milli

			degrees of Celsius.



tempX_max		Read/write the upper temperature limit - exceeding this

			will cause an alarm.



tempX_min		Read/write the lower temperature limit - exceeding this

			will cause an alarm.



tempX_offset		Read/write the temperature adjustment offset



tempX_crit		Read/write the THERM limit for remote1.



tempX_crit_hyst		Set the temperature value below crit where the

			fans will stay on - this helps drive the temperature

			low enough so it doesn't stay near the edge and

			cause THERM to keep tripping.



tempX_auto_point1_temp	Read/write the minimum temperature where the fans will

			turn on in automatic mode.



tempX_auto_point2_temp	Read/write the maximum temperature over which the fans

			will run in automatic mode.  tempX_auto_point1_temp

			and tempX_auto_point2_temp together define the

			range of automatic control.



tempX_alarm		Read a 1 if the max/min alarm is set

tempX_fault		Read a 1 if either temp1 or temp3 diode has a fault



(There are two voltage settings, in1 and in2):



inX_input		Read the current voltage on VCC.  Value is in

			millivolts.



inX_min			read/write the minimum voltage limit.

			Dropping below this causes an alarm.



inX_max			read/write the maximum voltage limit.

			Exceeding this causes an alarm.



inX_alarm		Read a 1 if the max/min alarm is set.

drivers/hwmon/Kconfig

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@@ -189,6 +189,16 @@ config SENSORS_ADT7473 
	  This driver can also be built as a module. If so, the module

	  will be called adt7473.



config SENSORS_ADT7475

	tristate "Analog Devices ADT7475"

	depends on I2C && EXPERIMENTAL

	help

	  If you say yes here you get support for the Analog Devices

	  ADT7475 hardware monitoring chips.



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

	  will be called adt7475.



config SENSORS_K8TEMP

	tristate "AMD Athlon64/FX or Opteron temperature sensor"

	depends on X86 && PCI && EXPERIMENTAL

drivers/hwmon/Makefile

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@@ -28,6 +28,8 @@ obj-$(CONFIG_SENSORS_ADS7828) += ads7828.o 
obj-$(CONFIG_SENSORS_ADT7462)	+= adt7462.o

obj-$(CONFIG_SENSORS_ADT7470)	+= adt7470.o

obj-$(CONFIG_SENSORS_ADT7473)	+= adt7473.o

obj-$(CONFIG_SENSORS_ADT7475)	+= adt7475.o



obj-$(CONFIG_SENSORS_APPLESMC)	+= applesmc.o

obj-$(CONFIG_SENSORS_AMS)	+= ams/

obj-$(CONFIG_SENSORS_ATXP1)	+= atxp1.o

drivers/hwmon/adt7475.c

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