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