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Mark D. Studebaker
147dda72bb
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1722 7894878c-1315-0410-8ee3-d5d059ff63e0
79 lines
2.9 KiB
Plaintext
79 lines
2.9 KiB
Plaintext
Kernel driver `lm92.o'
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======================
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Status: Complete and somewhat tested
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Supported chips:
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* National Semiconductors LM92
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Prefix `lm92'
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Addresses scanned: I2C 0x48 - 0x4b (inclusive)
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Author: Abraham van der Merwe <abraham@2d3d.co.za>
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License: GPL
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Module Parameters
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-----------------
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* force: short array (min = 1, max = 48)
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List of adapter,address pairs to boldly assume to be present
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* force_lm92: short array (min = 1, max = 48)
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List of adapter,address pairs which are unquestionably assumed to contain
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a `lm92' chip
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* probe: short array (min = 1, max = 48)
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List of adapter,address pairs to scan additionally
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* probe_range: short array (min = 1, max = 48)
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List of adapter,start-addr,end-addr triples to scan additionally
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* ignore: short array (min = 1, max = 48)
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List of adapter,address pairs not to scan
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* ignore_range: short array (min = 1, max = 48)
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List of adapter,start-addr,end-addr triples not to scan
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Description
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-----------
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This driver implements support for the National Semiconductors LM92
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temperature sensor.
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Each LM92 temperature sensor supports a single temperature sensor.
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Temperatures are exported to proc in degrees celsius * 10000 (in other
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words temperatures are accurate to 4 decimal places). There are alarms
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for high, low, and critical thresholds. There's also an hysteresis to
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control the thresholds for resetting alarms.
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At the moment the driver controls these sensors in comparator mode and the
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interrupt pins (INT, T_CRIT_A) are ignored.
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Hardware Configurations
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-----------------------
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The only thing that can be changed is enabling of the fault queue. Doing so
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ensures that alarms will only be triggered if 4 consecutive readings all
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cross the alarm thresholds. You can enable this behaviour by uncommenting
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the #define in the driver source, and then recompile/reinstall.
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Chip Features
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-------------
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Chip 'lm92'
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LABEL LABEL CLASS COMPUTE CLASS MODE MAGN
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temp - - R- 4
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temp_high temp temp RW 4
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temp_low temp temp RW 4
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temp_crit temp temp RW 4
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temp_hyst temp temp RW 4
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alarms - - R- 0
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LABEL FEATURE SYMBOL SYSCTL FILE:N
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temp SENSORS_LM92_TEMP temp:1
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temp_high SENSORS_LM92_TEMP_HIGH temp:2
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temp_low SENSORS_LM92_TEMP_LOW temp:3
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temp_crit SENSORS_LM92_TEMP_CRIT temp:4
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temp_hyst SENSORS_LM92_TEMP_HYST temp:5
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alarms SENSORS_LM92_ALARMS alarms:1
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