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hwmon: (tmp102) Various fixes

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Fixes from my driver review:
http://lists.lm-sensors.org/pipermail/lm-sensors/2010-March/028051.html

Only the small changes are in there, more important changes will come
later separately as time permits.

* Drop the remnants of the now gone detect function
* The TMP102 has no known compatible chip
* Include the right header files
* Clarify why byte swapping of register values is needed
* Strip resolution info bit from temperature register value
* Set cache lifetime to 1/3 second
* Don't arbitrarily reject limit values; clamp as needed
* Make limit writing unconditional
* Don't check for transaction types the driver doesn't use
* Properly check for error when setting configuration
* Report error on failed probe
* Make the driver load automatically where needed
* Various other minor fixes

Signed-off-by: Jean Delvare <[email protected]>
Cc: Steven King <[email protected]>
This commit is contained in:
Jean Delvare 2010-05-27 19:58:57 +02:00
commit cff37c9e82
3 changed files with 39 additions and 42 deletions
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9
Documentation/hwmon/tmp102
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@ -4,7 +4,7 @@ Kernel driver tmp102
Supported chips:
* Texas Instruments TMP102
Prefix: 'tmp102'
Addresses scanned: I2C 0x48 0x49 0x4a 0x4b
Addresses scanned: none
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp102.html
Author:
@ -15,13 +15,12 @@ Description
The Texas Instruments TMP102 implements one temperature sensor. Limits can be
set through the Overtemperature Shutdown register and Hysteresis register. The
sensor is accurate to 0.5 degrees over the range of -25 to +85 C, and to 1.0
degrees from -40 to +125 C. Resolution of the sensor is 0.0625 degree. The
sensor is accurate to 0.5 degree over the range of -25 to +85 C, and to 1.0
degree from -40 to +125 C. Resolution of the sensor is 0.0625 degree. The
operating temperature has a minimum of -55 C and a maximum of +150 C.
The TMP102 has a programmable update rate that can select between 8, 4, 1, and
0.5 Hz. (Currently the driver only supports the default of 4 Hz).
The driver provides the common sysfs-interface for temperatures (see
/Documentation/hwmon/sysfs-interface under Temperatures).
Documentation/hwmon/sysfs-interface under Temperatures).