731b4cace1
This patch adds support for MAX1668 and compatible temperature sensors. Signed-off-by: David George <david.george@ska.ac.za> [guenter.roeck@ericsson.com: minor cleanup of probe error path] Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
60 lines
2.3 KiB
Text
60 lines
2.3 KiB
Text
Kernel driver max1668
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=====================
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Supported chips:
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* Maxim MAX1668, MAX1805 and MAX1989
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Prefix: 'max1668'
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Addresses scanned: I2C 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e
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Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX1668-MAX1989.pdf
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Author:
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David George <david.george@ska.ac.za>
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Description
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-----------
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This driver implements support for the Maxim MAX1668, MAX1805 and MAX1989
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chips.
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The three devices are very similar, but the MAX1805 has a reduced feature
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set; only two remote temperature inputs vs the four avaible on the other
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two ICs.
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The driver is able to distinguish between the devices and creates sysfs
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entries as follows:
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MAX1805, MAX1668 and MAX1989:
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temp1_input ro local (ambient) temperature
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temp1_max rw local temperature maximum threshold for alarm
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temp1_max_alarm ro local temperature maximum threshold alarm
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temp1_min rw local temperature minimum threshold for alarm
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temp1_min_alarm ro local temperature minimum threshold alarm
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temp2_input ro remote temperature 1
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temp2_max rw remote temperature 1 maximum threshold for alarm
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temp2_max_alarm ro remote temperature 1 maximum threshold alarm
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temp2_min rw remote temperature 1 minimum threshold for alarm
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temp2_min_alarm ro remote temperature 1 minimum threshold alarm
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temp3_input ro remote temperature 2
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temp3_max rw remote temperature 2 maximum threshold for alarm
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temp3_max_alarm ro remote temperature 2 maximum threshold alarm
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temp3_min rw remote temperature 2 minimum threshold for alarm
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temp3_min_alarm ro remote temperature 2 minimum threshold alarm
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MAX1668 and MAX1989 only:
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temp4_input ro remote temperature 3
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temp4_max rw remote temperature 3 maximum threshold for alarm
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temp4_max_alarm ro remote temperature 3 maximum threshold alarm
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temp4_min rw remote temperature 3 minimum threshold for alarm
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temp4_min_alarm ro remote temperature 3 minimum threshold alarm
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temp5_input ro remote temperature 4
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temp5_max rw remote temperature 4 maximum threshold for alarm
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temp5_max_alarm ro remote temperature 4 maximum threshold alarm
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temp5_min rw remote temperature 4 minimum threshold for alarm
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temp5_min_alarm ro remote temperature 4 minimum threshold alarm
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Module Parameters
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-----------------
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* read_only: int
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Set to non-zero if you wish to prevent write access to alarm thresholds.
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