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hwmon: (it87) Add support for the ITE IT8603E

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Add support for IT8603E.

This closes bug #57861:
https://bugzilla.kernel.org/show_bug.cgi?id=57861

[JD: Fixes and clean-ups.]

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Rudolf Marek
2014-01-29 20:40:08 +01:00
committed by Jean Delvare
parent d8ec26d7f8
commit c145d5c628
3 changed files with 105 additions and 27 deletions
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25
Documentation/hwmon/it87
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@@ -2,6 +2,10 @@ Kernel driver it87
==================
Supported chips:
* IT8603E
Prefix: 'it8603'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
* IT8705F
Prefix: 'it87'
Addresses scanned: from Super I/O config space (8 I/O ports)
@@ -90,7 +94,7 @@ motherboard models.
Description
-----------
This driver implements support for the IT8705F, IT8712F, IT8716F,
This driver implements support for the IT8603E, IT8705F, IT8712F, IT8716F,
IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E, IT8771E, IT8772E,
IT8782F, IT8783E/F, and SiS950 chips.
@@ -129,6 +133,10 @@ to userspace applications.
The IT8728F, IT8771E, and IT8772E are considered compatible with the IT8721F,
until a datasheet becomes available (hopefully.)
The IT8603E is a custom design, hardware monitoring part is similar to
IT8728F. It only supports 16-bit fan mode, the full speed mode of the
fan is not supported (value 0 of pwmX_enable).
Temperatures are measured in degrees Celsius. An alarm is triggered once
when the Overtemperature Shutdown limit is crossed.
@@ -145,13 +153,16 @@ 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 and IT8728F: 0.012 volt.) The battery
voltage in8 does not have limit registers.
0.016 volt (except IT8603E, IT8721F/IT8758E and IT8728F: 0.012 volt.) The
battery voltage in8 does not have limit registers.
On the IT8721F/IT8758E, IT8782F, and IT8783E/F, some voltage inputs are
internal and scaled inside the chip (in7 (optional for IT8782F and IT8783E/F),
in8 and optionally in3). The driver handles this transparently so user-space
doesn't have to care.
On the IT8603E, IT8721F/IT8758E, IT8782F, and IT8783E/F, some voltage inputs
are internal and scaled inside the chip:
* in3 (optional)
* in7 (optional for IT8782F and IT8783E/F)
* in8 (always)
* in9 (relevant for IT8603E only)
The driver handles this transparently so user-space doesn't have to care.
The VID lines (IT8712F/IT8716F/IT8718F/IT8720F) encode the core voltage value:
the voltage level your processor should work with. This is hardcoded by