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Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/…
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…kernel/git/jdelvare/staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (sysfs-interface) Update tempX_type attribute to be more generic
  hwmon: (adm1031) Fix coding style issues
  hwmon: (it87) Add IT8728F support
  hwmon: (coretemp) Add missing section annotations
  hwmon: (lm90) Add range check to set_update_interval
  hwmon: (lm63) Support extended lookup table of LM96163
  hwmon: (lm63) Expose automatic fan speed control lookup table
  hwmon: (lm63) Fix incorrect comment about I2C address
  hwmon: (lm63) LM64 has a dedicated pin for tachometer
  hwmon: (lm63) Add sensor type attribute for external sensor on LM96163
  hwmon: (lm63) Add support for update_interval sysfs attribute
  hwmon: (lm63) Add support for writing the external critical temperature
  hwmon: (lm63) Add support for unsigned upper temperature limits
  hwmon: (lm63) Add support for LM96163
  hwmon: (lm63) Add support for external temperature offset register
  hwmon: (lm63) Fix checkpatch errors
  hwmon: (max1111) Change sysfs interface to in[0-3]_input in millivolts
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Linus Torvalds committed Jan 16, 2012
2 parents 9774040 + 5f8b1f8 commit adfeb6e
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Showing 10 changed files with 735 additions and 158 deletions.
13 changes: 10 additions & 3 deletions Documentation/hwmon/it87
Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,10 @@ Supported chips:
Prefix: 'it8721'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
* IT8728F
Prefix: 'it8728'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
* SiS950 [clone of IT8705F]
Prefix: 'it87'
Addresses scanned: from Super I/O config space (8 I/O ports)
Expand Down Expand Up @@ -71,7 +75,7 @@ Description
-----------

This driver implements support for the IT8705F, IT8712F, IT8716F,
IT8718F, IT8720F, IT8721F, IT8726F, IT8758E and SiS950 chips.
IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E and SiS950 chips.

These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
joysticks and other miscellaneous stuff. For hardware monitoring, they
Expand Down Expand Up @@ -105,6 +109,9 @@ The IT8726F is just bit enhanced IT8716F with additional hardware
for AMD power sequencing. Therefore the chip will appear as IT8716F
to userspace applications.

The IT8728F is considered compatible with the IT8721F, until a datasheet
becomes available (hopefully.)

Temperatures are measured in degrees Celsius. An alarm is triggered once
when the Overtemperature Shutdown limit is crossed.

Expand All @@ -121,8 +128,8 @@ alarm is triggered if the voltage has crossed a programmable minimum or
maximum limit. Note that minimum in this case always means 'closest to
zero'; this is important for negative voltage measurements. All voltage
inputs can measure voltages between 0 and 4.08 volts, with a resolution of
0.016 volt (except IT8721F/IT8758E: 0.012 volt.) The battery voltage in8 does
not have limit registers.
0.016 volt (except IT8721F/IT8758E and IT8728F: 0.012 volt.) The battery
voltage in8 does not have limit registers.

On the IT8721F/IT8758E, some voltage inputs are internal and scaled inside
the chip (in7, in8 and optionally in3). The driver handles this transparently
Expand Down
21 changes: 17 additions & 4 deletions Documentation/hwmon/lm63
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,11 @@ Supported chips:
Addresses scanned: I2C 0x18 and 0x4e
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/pf/LM/LM64.html
* National Semiconductor LM96163
Prefix: 'lm96163'
Addresses scanned: I2C 0x4c
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/pf/LM/LM96163.html

Author: Jean Delvare <khali@linux-fr.org>

Expand Down Expand Up @@ -49,16 +54,24 @@ value for measuring the speed of the fan. It can measure fan speeds down to
Note that the pin used for fan monitoring is shared with an alert out
function. Depending on how the board designer wanted to use the chip, fan
speed monitoring will or will not be possible. The proper chip configuration
is left to the BIOS, and the driver will blindly trust it.
is left to the BIOS, and the driver will blindly trust it. Only the original
LM63 suffers from this limitation, the LM64 and LM96163 have separate pins
for fan monitoring and alert out. On the LM64, monitoring is always enabled;
on the LM96163 it can be disabled.

A PWM output can be used to control the speed of the fan. The LM63 has two
PWM modes: manual and automatic. Automatic mode is not fully implemented yet
(you cannot define your custom PWM/temperature curve), and mode change isn't
supported either.

The lm63 driver will not update its values more frequently than every
second; reading them more often will do no harm, but will return 'old'
values.
The lm63 driver will not update its values more frequently than configured with
the update_interval sysfs attribute; reading them more often will do no harm,
but will return 'old' values. Values in the automatic fan control lookup table
(attributes pwm1_auto_*) have their own independent lifetime of 5 seconds.

The LM64 is effectively an LM63 with GPIO lines. The driver does not
support these GPIO lines at present.

The LM96163 is an enhanced version of LM63 with improved temperature accuracy
and better PWM resolution. For LM96163, the external temperature sensor type is
configurable as CPU embedded diode(1) or 3904 transistor(2).
2 changes: 1 addition & 1 deletion Documentation/hwmon/sysfs-interface
Original file line number Diff line number Diff line change
Expand Up @@ -304,7 +304,7 @@ value (fastest fan speed) wins.
temp[1-*]_type Sensor type selection.
Integers 1 to 6
RW
1: PII/Celeron Diode
1: CPU embedded diode
2: 3904 transistor
3: thermal diode
4: thermistor
Expand Down
8 changes: 4 additions & 4 deletions drivers/hwmon/Kconfig
Original file line number Diff line number Diff line change
Expand Up @@ -474,8 +474,8 @@ config SENSORS_IT87
select HWMON_VID
help
If you say yes here you get support for ITE IT8705F, IT8712F,
IT8716F, IT8718F, IT8720F, IT8721F, IT8726F and IT8758E sensor
chips, and the SiS960 clone.
IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F and IT8758E
sensor chips, and the SiS960 clone.

This driver can also be built as a module. If so, the module
will be called it87.
Expand Down Expand Up @@ -515,11 +515,11 @@ config SENSORS_LINEAGE
will be called lineage-pem.

config SENSORS_LM63
tristate "National Semiconductor LM63 and LM64"
tristate "National Semiconductor LM63 and compatibles"
depends on I2C
help
If you say yes here you get support for the National
Semiconductor LM63 and LM64 remote diode digital temperature
Semiconductor LM63, LM64, and LM96163 remote diode digital temperature
sensors with integrated fan control. Such chips are found
on the Tyan S4882 (Thunder K8QS Pro) motherboard, among
others.
Expand Down
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