hwmon: Delete deprecated FSC drivers (91f17e02) · Commits · e / devices / android_kernel_samsung_universal8895

Documentation/feature-removal-schedule.txt

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	@@ -354,14 +354,6 @@ Who: Krzysztof Piotr Oledzki <ole@ans.pl>

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

	What: fscher and fscpos drivers
	When: June 2009
	Why: Deprecated by the new fschmd driver.
	Who: Hans de Goede <hdegoede@redhat.com>
	Jean Delvare <khali@linux-fr.org>

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

	What: sysfs ui for changing p4-clockmod parameters		What: sysfs ui for changing p4-clockmod parameters
	When: September 2009		When: September 2009
	Why: See commits 129f8ae9b1b5be94517da76009ea956e89104ce8 and		Why: See commits 129f8ae9b1b5be94517da76009ea956e89104ce8 and

Documentation/hwmon/fscher

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	Kernel driver fscher
	====================

	Supported chips:
	* Fujitsu-Siemens Hermes chip
	Prefix: 'fscher'
	Addresses scanned: I2C 0x73

	Authors:
	Reinhard Nissl <rnissl@gmx.de> based on work
	from Hermann Jung <hej@odn.de>,
	Frodo Looijaard <frodol@dds.nl>,
	Philip Edelbrock <phil@netroedge.com>

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

	This driver implements support for the Fujitsu-Siemens Hermes chip. It is
	described in the 'Register Set Specification BMC Hermes based Systemboard'
	from Fujitsu-Siemens.

	The Hermes chip implements a hardware-based system management, e.g. for
	controlling fan speed and core voltage. There is also a watchdog counter on
	the chip which can trigger an alarm and even shut the system down.

	The chip provides three temperature values (CPU, motherboard and
	auxiliary), three voltage values (+12V, +5V and battery) and three fans
	(power supply, CPU and auxiliary).

	Temperatures are measured in degrees Celsius. The resolution is 1 degree.

	Fan rotation speeds are reported in RPM (rotations per minute). The value
	can be divided by a programmable divider (1, 2 or 4) which is stored on
	the chip.

	Voltage sensors (also known as "in" sensors) report their values in volts.

	All values are reported as final values from the driver. There is no need
	for further calculations.


	Detailed description
	--------------------

	Below you'll find a single line description of all the bit values. With
	this information, you're able to decode e. g. alarms, wdog, etc. To make
	use of the watchdog, you'll need to set the watchdog time and enable the
	watchdog. After that it is necessary to restart the watchdog time within
	the specified period of time, or a system reset will occur.

	* revision
	READING & 0xff = 0x??: HERMES revision identification

	* alarms
	READING & 0x80 = 0x80: CPU throttling active
	READING & 0x80 = 0x00: CPU running at full speed

	READING & 0x10 = 0x10: software event (see control:1)
	READING & 0x10 = 0x00: no software event

	READING & 0x08 = 0x08: watchdog event (see wdog:2)
	READING & 0x08 = 0x00: no watchdog event

	READING & 0x02 = 0x02: thermal event (see temp*:1)
	READING & 0x02 = 0x00: no thermal event

	READING & 0x01 = 0x01: fan event (see fan*:1)
	READING & 0x01 = 0x00: no fan event

	READING & 0x13 ! 0x00: ALERT LED is flashing

	* control
	READING & 0x01 = 0x01: software event
	READING & 0x01 = 0x00: no software event

	WRITING & 0x01 = 0x01: set software event
	WRITING & 0x01 = 0x00: clear software event

	* watchdog_control
	READING & 0x80 = 0x80: power off on watchdog event while thermal event
	READING & 0x80 = 0x00: watchdog power off disabled (just system reset enabled)

	READING & 0x40 = 0x40: watchdog timebase 60 seconds (see also wdog:1)
	READING & 0x40 = 0x00: watchdog timebase 2 seconds

	READING & 0x10 = 0x10: watchdog enabled
	READING & 0x10 = 0x00: watchdog disabled

	WRITING & 0x80 = 0x80: enable "power off on watchdog event while thermal event"
	WRITING & 0x80 = 0x00: disable "power off on watchdog event while thermal event"

	WRITING & 0x40 = 0x40: set watchdog timebase to 60 seconds
	WRITING & 0x40 = 0x00: set watchdog timebase to 2 seconds

	WRITING & 0x20 = 0x20: disable watchdog

	WRITING & 0x10 = 0x10: enable watchdog / restart watchdog time

	* watchdog_state
	READING & 0x02 = 0x02: watchdog system reset occurred
	READING & 0x02 = 0x00: no watchdog system reset occurred

	WRITING & 0x02 = 0x02: clear watchdog event

	* watchdog_preset
	READING & 0xff = 0x??: configured watch dog time in units (see wdog:3 0x40)

	WRITING & 0xff = 0x??: configure watch dog time in units

	* in* (0: +5V, 1: +12V, 2: onboard 3V battery)
	READING: actual voltage value

	* temp*_status (1: CPU sensor, 2: onboard sensor, 3: auxiliary sensor)
	READING & 0x02 = 0x02: thermal event (overtemperature)
	READING & 0x02 = 0x00: no thermal event

	READING & 0x01 = 0x01: sensor is working
	READING & 0x01 = 0x00: sensor is faulty

	WRITING & 0x02 = 0x02: clear thermal event

	* temp*_input (1: CPU sensor, 2: onboard sensor, 3: auxiliary sensor)
	READING: actual temperature value

	* fan*_status (1: power supply fan, 2: CPU fan, 3: auxiliary fan)
	READING & 0x04 = 0x04: fan event (fan fault)
	READING & 0x04 = 0x00: no fan event

	WRITING & 0x04 = 0x04: clear fan event

	* fan*_div (1: power supply fan, 2: CPU fan, 3: auxiliary fan)
	Divisors 2,4 and 8 are supported, both for reading and writing

	* fan*_pwm (1: power supply fan, 2: CPU fan, 3: auxiliary fan)
	READING & 0xff = 0x00: fan may be switched off
	READING & 0xff = 0x01: fan must run at least at minimum speed (supply: 6V)
	READING & 0xff = 0xff: fan must run at maximum speed (supply: 12V)
	READING & 0xff = 0x??: fan must run at least at given speed (supply: 6V..12V)

	WRITING & 0xff = 0x00: fan may be switched off
	WRITING & 0xff = 0x01: fan must run at least at minimum speed (supply: 6V)
	WRITING & 0xff = 0xff: fan must run at maximum speed (supply: 12V)
	WRITING & 0xff = 0x??: fan must run at least at given speed (supply: 6V..12V)

	* fan*_input (1: power supply fan, 2: CPU fan, 3: auxiliary fan)
	READING: actual RPM value


	Limitations
	-----------

	* Measuring fan speed
	It seems that the chip counts "ripples" (typical fans produce 2 ripples per
	rotation while VERAX fans produce 18) in a 9-bit register. This register is
	read out every second, then the ripple prescaler (2, 4 or 8) is applied and
	the result is stored in the 8 bit output register. Due to the limitation of
	the counting register to 9 bits, it is impossible to measure a VERAX fan
	properly (even with a prescaler of 8). At its maximum speed of 3500 RPM the
	fan produces 1080 ripples per second which causes the counting register to
	overflow twice, leading to only 186 RPM.

	* Measuring input voltages
	in2 ("battery") reports the voltage of the onboard lithium battery and not
	+3.3V from the power supply.

	* Undocumented features
	Fujitsu-Siemens Computers has not documented all features of the chip so
	far. Their software, System Guard, shows that there are a still some
	features which cannot be controlled by this implementation.

drivers/hwmon/Kconfig

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	@@ -325,34 +325,6 @@ config SENSORS_F75375S
	This driver can also be built as a module. If so, the module		This driver can also be built as a module. If so, the module
	will be called f75375s.		will be called f75375s.

	config SENSORS_FSCHER
	tristate "FSC Hermes (DEPRECATED)"
	depends on X86 && I2C
	help
	This driver is DEPRECATED please use the new merged fschmd
	("FSC Poseidon, Scylla, Hermes, Heimdall and Heracles") driver
	instead.

	If you say yes here you get support for Fujitsu Siemens
	Computers Hermes sensor chips.

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

	config SENSORS_FSCPOS
	tristate "FSC Poseidon (DEPRECATED)"
	depends on X86 && I2C
	help
	This driver is DEPRECATED please use the new merged fschmd
	("FSC Poseidon, Scylla, Hermes, Heimdall and Heracles") driver
	instead.

	If you say yes here you get support for Fujitsu Siemens
	Computers Poseidon sensor chips.

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

	config SENSORS_FSCHMD		config SENSORS_FSCHMD
	tristate "Fujitsu Siemens Computers sensor chips"		tristate "Fujitsu Siemens Computers sensor chips"
	depends on X86 && I2C		depends on X86 && I2C

drivers/hwmon/Makefile

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	@@ -42,9 +42,7 @@ obj-$(CONFIG_SENSORS_DS1621) += ds1621.o
	obj-$(CONFIG_SENSORS_F71805F) += f71805f.o		obj-$(CONFIG_SENSORS_F71805F) += f71805f.o
	obj-$(CONFIG_SENSORS_F71882FG) += f71882fg.o		obj-$(CONFIG_SENSORS_F71882FG) += f71882fg.o
	obj-$(CONFIG_SENSORS_F75375S) += f75375s.o		obj-$(CONFIG_SENSORS_F75375S) += f75375s.o
	obj-$(CONFIG_SENSORS_FSCHER) += fscher.o
	obj-$(CONFIG_SENSORS_FSCHMD) += fschmd.o		obj-$(CONFIG_SENSORS_FSCHMD) += fschmd.o
	obj-$(CONFIG_SENSORS_FSCPOS) += fscpos.o
	obj-$(CONFIG_SENSORS_G760A) += g760a.o		obj-$(CONFIG_SENSORS_G760A) += g760a.o
	obj-$(CONFIG_SENSORS_GL518SM) += gl518sm.o		obj-$(CONFIG_SENSORS_GL518SM) += gl518sm.o
	obj-$(CONFIG_SENSORS_GL520SM) += gl520sm.o		obj-$(CONFIG_SENSORS_GL520SM) += gl520sm.o

drivers/hwmon/fscher.c

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