hwmon/f71805f: Add support for the Fintek F71872F/FG chip
Add support for the Fintek F71872F/FG Super-I/O chip. It is basically the
same as the Fintek F71805F/FG as far as hardware monitoring is concerned,
with two additional internal voltages monitored (VSB and battery), and 6
VID inputs (not yet supported.)
To make things a bit more confusing, two of the voltage input pins (in4
and in8) can be used for other functions. The driver reads the pin
configuration from the Super-I/O configuration space to decide whether
it must create interface files for these inputs or not.
Many thanks to Nikolay Derkach for testing the early iterations of this
code and reporting bugs.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/Documentation/hwmon/f71805f b/Documentation/hwmon/f71805f
index bc571f9..bfd0f15 100644
--- a/Documentation/hwmon/f71805f
+++ b/Documentation/hwmon/f71805f
@@ -6,6 +6,10 @@
Prefix: 'f71805f'
Addresses scanned: none, address read from Super I/O config space
Datasheet: Provided by Fintek on request
+ * Fintek F71872F/FG
+ Prefix: 'f71872f'
+ Addresses scanned: none, address read from Super I/O config space
+ Datasheet: Provided by Fintek on request
Author: Jean Delvare <khali@linux-fr.org>
@@ -30,6 +34,10 @@
This chip also has fan controlling features, using either DC or PWM, in
three different modes (one manual, two automatic).
+The Fintek F71872F/FG Super I/O chip is almost the same, with two
+additional internal voltages monitored (VSB and battery). It also features
+6 VID inputs. The VID inputs are not yet supported by this driver.
+
The driver assumes that no more than one chip is present, which seems
reasonable.
@@ -41,7 +49,8 @@
range is thus from 0 to 2.040 V. Voltage values outside of this range
need external resistors. An exception is in0, which is used to monitor
the chip's own power source (+3.3V), and is divided internally by a
-factor 2.
+factor 2. For the F71872F/FG, in9 (VSB) and in10 (battery) are also
+divided internally by a factor 2.
The two LSB of the voltage limit registers are not used (always 0), so
you can only set the limits in steps of 32 mV (before scaling).
@@ -60,9 +69,12 @@
in6 VIN6 VCC1.5V 10K - 1.00 1.50 V
in7 VIN7 VCORE 10K - 1.00 ~1.40 V (1)
in8 VIN8 VSB5V 200K 47K 1.00 0.95 V
+in10 VSB VSB3.3V int. int. 2.00 1.65 V (3)
+in9 VBAT VBATTERY int. int. 2.00 1.50 V (3)
(1) Depends on your hardware setup.
(2) Obviously not correct, swapping R1 and R2 would make more sense.
+(3) F71872F/FG only.
These values can be used as hints at best, as motherboard manufacturers
are free to use a completely different setup. As a matter of fact, the