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hwmon: (it87) Add support for IT8782F and IT8783E/F

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Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck
2012-03-02 11:46:44 -08:00
committed by Guenter Roeck
parent 76e10d158e
commit 0531d98b1f
2 changed files with 118 additions and 35 deletions
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28
Documentation/hwmon/it87
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@@ -30,6 +30,14 @@ Supported chips:
Prefix: 'it8728'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
* IT8782F
Prefix: 'it8782'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
* IT8783E/F
Prefix: 'it8783'
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)
@@ -75,7 +83,8 @@ Description
-----------
This driver implements support for the IT8705F, IT8712F, IT8716F,
IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E and SiS950 chips.
IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E, IT8781F, IT8782F,
IT8783E/F, and SiS950 chips.
These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
joysticks and other miscellaneous stuff. For hardware monitoring, they
@@ -99,11 +108,11 @@ The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E and later IT8712F revisions
have support for 2 additional fans. The additional fans are supported by the
driver.
The IT8716F, IT8718F, IT8720F and IT8721F/IT8758E, and late IT8712F and
IT8705F also have optional 16-bit tachometer counters for fans 1 to 3. This
is better (no more fan clock divider mess) but not compatible with the older
chips and revisions. The 16-bit tachometer mode is enabled by the driver when
one of the above chips is detected.
The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E, IT8782F, IT8783E/F, and late
IT8712F and IT8705F also have optional 16-bit tachometer counters for fans 1 to
3. This is better (no more fan clock divider mess) but not compatible with the
older chips and revisions. The 16-bit tachometer mode is enabled by the driver
when one of the above chips is detected.
The IT8726F is just bit enhanced IT8716F with additional hardware
for AMD power sequencing. Therefore the chip will appear as IT8716F
@@ -131,9 +140,10 @@ 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.
On the IT8721F/IT8758E, some voltage inputs are internal and scaled inside
the chip (in7, in8 and optionally in3). The driver handles this transparently
so user-space doesn't have to care.
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.
The VID lines (IT8712F/IT8716F/IT8718F/IT8720F) encode the core voltage value:
the voltage level your processor should work with. This is hardcoded by