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David George731b4ca2011-06-02 08:43:45 -07001Kernel driver max1668
2=====================
3
4Supported chips:
5 * Maxim MAX1668, MAX1805 and MAX1989
6 Prefix: 'max1668'
7 Addresses scanned: I2C 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e
8 Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX1668-MAX1989.pdf
9
10Author:
11 David George <david.george@ska.ac.za>
12
13Description
14-----------
15
16This driver implements support for the Maxim MAX1668, MAX1805 and MAX1989
17chips.
18
19The three devices are very similar, but the MAX1805 has a reduced feature
20set; only two remote temperature inputs vs the four avaible on the other
21two ICs.
22
23The driver is able to distinguish between the devices and creates sysfs
24entries as follows:
25
26MAX1805, MAX1668 and MAX1989:
27
28temp1_input ro local (ambient) temperature
29temp1_max rw local temperature maximum threshold for alarm
30temp1_max_alarm ro local temperature maximum threshold alarm
31temp1_min rw local temperature minimum threshold for alarm
32temp1_min_alarm ro local temperature minimum threshold alarm
33temp2_input ro remote temperature 1
34temp2_max rw remote temperature 1 maximum threshold for alarm
35temp2_max_alarm ro remote temperature 1 maximum threshold alarm
36temp2_min rw remote temperature 1 minimum threshold for alarm
37temp2_min_alarm ro remote temperature 1 minimum threshold alarm
38temp3_input ro remote temperature 2
39temp3_max rw remote temperature 2 maximum threshold for alarm
40temp3_max_alarm ro remote temperature 2 maximum threshold alarm
41temp3_min rw remote temperature 2 minimum threshold for alarm
42temp3_min_alarm ro remote temperature 2 minimum threshold alarm
43
44MAX1668 and MAX1989 only:
45temp4_input ro remote temperature 3
46temp4_max rw remote temperature 3 maximum threshold for alarm
47temp4_max_alarm ro remote temperature 3 maximum threshold alarm
48temp4_min rw remote temperature 3 minimum threshold for alarm
49temp4_min_alarm ro remote temperature 3 minimum threshold alarm
50temp5_input ro remote temperature 4
51temp5_max rw remote temperature 4 maximum threshold for alarm
52temp5_max_alarm ro remote temperature 4 maximum threshold alarm
53temp5_min rw remote temperature 4 minimum threshold for alarm
54temp5_min_alarm ro remote temperature 4 minimum threshold alarm
55
56Module Parameters
57-----------------
58
59* read_only: int
60 Set to non-zero if you wish to prevent write access to alarm thresholds.