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stigge@antcom.dea5b79d62011-01-20 18:42:55 +01001Kernel driver max6639
2=====================
3
4Supported chips:
5 * Maxim MAX6639
6 Prefix: 'max6639'
7 Addresses scanned: I2C 0x2c, 0x2e, 0x2f
8 Datasheet: http://pdfserv.maxim-ic.com/en/ds/MAX6639.pdf
9
10Authors:
11 He Changqing <hechangqing@semptian.com>
12 Roland Stigge <stigge@antcom.de>
13
14Description
15-----------
16
17This driver implements support for the Maxim MAX6639. This chip is a 2-channel
18temperature monitor with dual PWM fan speed controller. It can monitor its own
19temperature and one external diode-connected transistor or two external
20diode-connected transistors.
21
22The following device attributes are implemented via sysfs:
23
24Attribute R/W Contents
25----------------------------------------------------------------------------
26temp1_input R Temperature channel 1 input (0..150 C)
27temp2_input R Temperature channel 2 input (0..150 C)
28temp1_fault R Temperature channel 1 diode fault
29temp2_fault R Temperature channel 2 diode fault
30temp1_max RW Set THERM temperature for input 1
31 (in C, see datasheet)
32temp2_max RW Set THERM temperature for input 2
33temp1_crit RW Set ALERT temperature for input 1
34temp2_crit RW Set ALERT temperature for input 2
35temp1_emergency RW Set OT temperature for input 1
36 (in C, see datasheet)
37temp2_emergency RW Set OT temperature for input 2
38pwm1 RW Fan 1 target duty cycle (0..255)
39pwm2 RW Fan 2 target duty cycle (0..255)
40fan1_input R TACH1 fan tachometer input (in RPM)
41fan2_input R TACH2 fan tachometer input (in RPM)
42fan1_fault R Fan 1 fault
43fan2_fault R Fan 2 fault
44temp1_max_alarm R Alarm on THERM temperature on channel 1
45temp2_max_alarm R Alarm on THERM temperature on channel 2
46temp1_crit_alarm R Alarm on ALERT temperature on channel 1
47temp2_crit_alarm R Alarm on ALERT temperature on channel 2
48temp1_emergency_alarm R Alarm on OT temperature on channel 1
49temp2_emergency_alarm R Alarm on OT temperature on channel 2