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| author | Jean Delvare <khali@linux-fr.org> | 2010-08-14 21:08:59 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@linux-fr.org> | 2010-08-14 21:08:59 +0200 |
| commit | 008e5f3350e0a474baff3ed3eb4f79653a6b6745 (patch) | |
| tree | b2a2b27fd68b6071bbe3f2560df477d39d2ddb24 /Documentation | |
| parent | 9d32df192d2e4db4d59f26a3ea73601bd1a733e5 (diff) | |
| download | kernel_samsung_crespo-008e5f3350e0a474baff3ed3eb4f79653a6b6745.zip kernel_samsung_crespo-008e5f3350e0a474baff3ed3eb4f79653a6b6745.tar.gz kernel_samsung_crespo-008e5f3350e0a474baff3ed3eb4f79653a6b6745.tar.bz2 | |
hwmon: (pc87427) Add temperature monitoring support
Add support for the 6 temperature monitoring channels of the PC87427.
Note that the sensors resolution can vary, and I couldn't find a way
to figure it out, so we might have to compensate in user-space.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/hwmon/pc87427 | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/Documentation/hwmon/pc87427 b/Documentation/hwmon/pc87427 index 3282bf3..8fdd08c 100644 --- a/Documentation/hwmon/pc87427 +++ b/Documentation/hwmon/pc87427 @@ -18,7 +18,8 @@ Description The National Semiconductor Super I/O chip includes complete hardware monitoring capabilities. It can monitor up to 18 voltages, 8 fans and -6 temperature sensors. Only the fans are supported at the moment. +6 temperature sensors. Only the fans and temperatures are supported at +the moment, voltages aren't. This chip also has fan controlling features (up to 4 PWM outputs), which are partly supported by this driver. @@ -45,3 +46,14 @@ Fan speed can be controlled by PWM outputs. There are 4 possible modes: always off, always on, manual and automatic. The latter isn't supported by the driver: you can only return to that mode if it was the original setting, and the configuration interface is missing. + + +Temperature Monitoring +---------------------- + +The PC87427 relies on external sensors (following the SensorPath +standard), so the resolution and range depend on the type of sensor +connected. The integer part can be 8-bit or 9-bit, and can be signed or +not. I couldn't find a way to figure out the external sensor data +temperature format, so user-space adjustment (typically by a factor 2) +may be required. |