Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging (f71eaf68) · Commits · e / devices / android_kernel_fairphone_FP3

Documentation/feature-removal-schedule.txt

+7 −0

Original line number	Diff line number	Diff line
		@@ -483,3 +483,10 @@ Why: With the recent innovations in CPU hardware acceleration technologies
		Who: Alok N Kataria <akataria@vmware.com>

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

		What: adt7473 hardware monitoring driver
		When: February 2010
		Why: Obsoleted by the adt7475 driver.
		Who: Jean Delvare <khali@linux-fr.org>

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

Documentation/hwmon/adt7473

+2 −0

Original line number	Diff line number	Diff line
		@@ -9,6 +9,8 @@ Supported chips:

		Author: Darrick J. Wong

		This driver is depreacted, please use the adt7475 driver instead.

		Description
		-----------

Documentation/hwmon/adt7475

+117 −87

Original line number	Diff line number	Diff line
		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.
		Kernel driver adt7475
		=====================

		Supported chips:
		* Analog Devices ADT7473
		Prefix: 'adt7473'
		Addresses scanned: I2C 0x2C, 0x2D, 0x2E
		Datasheet: Publicly available at the On Semiconductors website
		* Analog Devices ADT7475
		Prefix: 'adt7475'
		Addresses scanned: I2C 0x2E
		Datasheet: Publicly available at the On Semiconductors website
		* Analog Devices ADT7476
		Prefix: 'adt7476'
		Addresses scanned: I2C 0x2C, 0x2D, 0x2E
		Datasheet: Publicly available at the On Semiconductors website
		* Analog Devices ADT7490
		Prefix: 'adt7490'
		Addresses scanned: I2C 0x2C, 0x2D, 0x2E
		Datasheet: Publicly available at the On Semiconductors website

		Authors:
		Jordan Crouse
		Hans de Goede
		Darrick J. Wong (documentation)
		Jean Delvare


		Description
		-----------

		This driver implements support for the Analog Devices ADT7473, ADT7475,
		ADT7476 and ADT7490 chip family. The ADT7473 and ADT7475 differ only in
		minor details. The ADT7476 has additional features, including extra voltage
		measurement inputs and VID support. The ADT7490 also has additional
		features, including extra voltage measurement inputs and PECI support. All
		the supported chips will be collectively designed by the name "ADT747x" in
		the rest of this document.

		The ADT747x uses the 2-wire interface compatible with the SMBus 2.0
		specification. Using an analog to digital converter it measures three (3)
		temperatures and two (2) or more voltages. It has four (4) 16-bit counters
		for measuring fan speed. There are three (3) PWM outputs that can be used
		to control fan speed.

		A sophisticated control system for the PWM outputs is designed into the
		ADT747x that allows fan speed to be adjusted automatically based on any of the
		three temperature sensors. Each PWM output is individually adjustable and
		programmable. Once configured, the ADT747x will adjust the PWM outputs in
		response to the measured temperatures without further host intervention.
		This feature can also be disabled for manual control of the PWM's.

		Each of the measured inputs (voltage, temperature, fan speed) has
		corresponding high/low limit values. The ADT747x will signal an ALARM if
		any measured value exceeds either limit.

		The ADT747x samples all inputs continuously. The driver will not read
		the registers more often than once every other second. Further,
		configuration data is only read once per minute.

		Chip Differences Summary
		------------------------

		ADT7473:
		* 2 voltage inputs
		* system acoustics optimizations (not implemented)

		ADT7475:
		* 2 voltage inputs

		ADT7476:
		* 5 voltage inputs
		* VID support

		ADT7490:
		* 6 voltage inputs
		* 1 Imon input (not implemented)
		* PECI support (not implemented)
		* 2 GPIO pins (not implemented)
		* system acoustics optimizations (not implemented)

		Special Features
		----------------

		The ADT747x has a 10-bit ADC and can therefore measure temperatures
		with a resolution of 0.25 degree Celsius. Temperature readings can be
		configured either for two's complement format or "Offset 64" format,
		wherein 64 is subtracted from the raw value to get the temperature value.

		The datasheet is very detailed and describes a procedure for determining
		an optimal configuration for the automatic PWM control.

		Fan Speed Control
		-----------------

		The driver exposes two trip points per PWM channel.

		point1: Set the PWM speed at the lower temperature bound
		point2: Set the PWM speed at the higher temperature bound

		The ADT747x will scale the PWM linearly between the lower and higher PWM
		speed when the temperature is between the two temperature boundaries.
		Temperature boundaries are associated to temperature channels rather than
		PWM outputs, and a given PWM output can be controlled by several temperature
		channels. As a result, the ADT747x may compute more than one PWM value
		for a channel at a given time, in which case the maximum value (fastest
		fan speed) is applied. PWM values range from 0 (off) to 255 (full speed).

		Fan speed may be set to maximum when the temperature sensor associated with
		the PWM control exceeds temp#_max.

		Notes
		-----

		The nVidia binary driver presents an ADT7473 chip via an on-card i2c bus.
		Unfortunately, they fail to set the i2c adapter class, so this driver may
		fail to find the chip until the nvidia driver is patched.

Documentation/hwmon/f71882fg

+10 −0

Original line number	Diff line number	Diff line
		@@ -14,6 +14,10 @@ Supported chips:
		Prefix: 'f71882fg'
		Addresses scanned: none, address read from Super I/O config space
		Datasheet: Available from the Fintek website
		* Fintek F71889FG
		Prefix: 'f71889fg'
		Addresses scanned: none, address read from Super I/O config space
		Datasheet: Should become available on the Fintek website soon
		* Fintek F8000
		Prefix: 'f8000'
		Addresses scanned: none, address read from Super I/O config space
		@@ -51,6 +55,12 @@ supported. The right one to use depends on external circuitry on the
		motherboard, so the driver assumes that the BIOS set the method
		properly.

		Note that the lowest numbered temperature zone trip point corresponds to
		to the border between the highest and one but highest temperature zones, and
		vica versa. So the temperature zone trip points 1-4 (or 1-2) go from high temp
		to low temp! This is how things are implemented in the IC, and the driver
		mimicks this.

		There are 2 modes to specify the speed of the fan, PWM duty cycle (or DC
		voltage) mode, where 0-100% duty cycle (0-100% of 12V) is specified. And RPM
		mode where the actual RPM of the fan (as measured) is controlled and the speed

Documentation/hwmon/it87

+0 −1

Original line number	Diff line number	Diff line
		@@ -86,7 +86,6 @@ The IT8712F and IT8716F additionally feature VID inputs, used to report
		the Vcore voltage of the processor. The early IT8712F have 5 VID pins,
		the IT8716F and late IT8712F have 6. They are shared with other functions
		though, so the functionality may not be available on a given system.
		The driver dumbly assume it is there.

		The IT8718F and IT8720F also features VID inputs (up to 8 pins) but the value
		is stored in the Super-I/O configuration space. Due to technical limitations,