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hwmon: (dme1737) Add sch311x support

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This patch adds support for the SMSC SCH3112, SCH3114, and SCH3116 Super-I/O
chips. These chips feature identical hardware monitoring capabilites with the
expection that some of the fan inputs and pmw outputs don't exist.

The hardware monitoring features of the SCH311x chips can only be accessed via
the ISA bus. The driver therefore registers as a platform driver, if such a
chip is detected.

Signed-off-by: Juerg Haefliger <juergh at gmail.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
This commit is contained in:
Juerg Haefliger
2007-10-07 21:27:35 -07:00
committed by Mark M. Hoffman
parent 62ee3e10d3
commit e95c237d78
3 changed files with 358 additions and 52 deletions
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31
Documentation/hwmon/dme1737
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@@ -6,6 +6,10 @@ Supported chips:
Prefix: 'dme1737'
Addresses scanned: I2C 0x2c, 0x2d, 0x2e
Datasheet: Provided by SMSC upon request and under NDA
* SMSC SCH3112, SCH3114, SCH3116
Prefix: 'sch311x'
Addresses scanned: none, address read from Super-I/O config space
Datasheet: http://www.nuhorizons.com/FeaturedProducts/Volume1/SMSC/311x.pdf
Authors:
Juerg Haefliger <juergh@gmail.com>
@@ -27,16 +31,25 @@ Description
-----------
This driver implements support for the hardware monitoring capabilities of the
SMSC DME1737 and Asus A8000 (which are the same) Super-I/O chips. This chip
features monitoring of 3 temp sensors temp[1-3] (2 remote diodes and 1
internal), 7 voltages in[0-6] (6 external and 1 internal) and 6 fan speeds
fan[1-6]. Additionally, the chip implements 5 PWM outputs pwm[1-3,5-6] for
controlling fan speeds both manually and automatically.
SMSC DME1737 and Asus A8000 (which are the same) and SMSC SCH311x Super-I/O
chips. These chips feature monitoring of 3 temp sensors temp[1-3] (2 remote
diodes and 1 internal), 7 voltages in[0-6] (6 external and 1 internal) and up
to 6 fan speeds fan[1-6]. Additionally, the chips implement up to 5 PWM
outputs pwm[1-3,5-6] for controlling fan speeds both manually and
automatically.
Fan[3-6] and pwm[3,5-6] are optional features and their availability is
dependent on the configuration of the chip. The driver will detect which
features are present during initialization and create the sysfs attributes
accordingly.
For the DME1737 and A8000, fan[1-2] and pwm[1-2] are always present. Fan[3-6]
and pwm[3,5-6] are optional features and their availability depends on the
configuration of the chip. The driver will detect which features are present
during initialization and create the sysfs attributes accordingly.
For the SCH311x, fan[1-3] and pwm[1-3] are always present and fan[4-6] and
pwm[5-6] don't exist.
The hardware monitoring features of the DME1737 and A8000 are only accessible
via SMBus, while the SCH311x only provides access via the ISA bus. The driver
will therefore register itself as an I2C client driver if it detects a DME1737
or A8000 and as a platform driver if it detects a SCH311x chip.
Voltage Monitoring