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- Kernel driver max6639
- =====================
- Supported chips:
- * Maxim MAX6639
- Prefix: 'max6639'
- Addresses scanned: I2C 0x2c, 0x2e, 0x2f
- Datasheet: http://pdfserv.maxim-ic.com/en/ds/MAX6639.pdf
- Authors:
- He Changqing <hechangqing@semptian.com>
- Roland Stigge <stigge@antcom.de>
- Description
- -----------
- This driver implements support for the Maxim MAX6639. This chip is a 2-channel
- temperature monitor with dual PWM fan speed controller. It can monitor its own
- temperature and one external diode-connected transistor or two external
- diode-connected transistors.
- The following device attributes are implemented via sysfs:
- Attribute R/W Contents
- ----------------------------------------------------------------------------
- temp1_input R Temperature channel 1 input (0..150 C)
- temp2_input R Temperature channel 2 input (0..150 C)
- temp1_fault R Temperature channel 1 diode fault
- temp2_fault R Temperature channel 2 diode fault
- temp1_max RW Set THERM temperature for input 1
- (in C, see datasheet)
- temp2_max RW Set THERM temperature for input 2
- temp1_crit RW Set ALERT temperature for input 1
- temp2_crit RW Set ALERT temperature for input 2
- temp1_emergency RW Set OT temperature for input 1
- (in C, see datasheet)
- temp2_emergency RW Set OT temperature for input 2
- pwm1 RW Fan 1 target duty cycle (0..255)
- pwm2 RW Fan 2 target duty cycle (0..255)
- fan1_input R TACH1 fan tachometer input (in RPM)
- fan2_input R TACH2 fan tachometer input (in RPM)
- fan1_fault R Fan 1 fault
- fan2_fault R Fan 2 fault
- temp1_max_alarm R Alarm on THERM temperature on channel 1
- temp2_max_alarm R Alarm on THERM temperature on channel 2
- temp1_crit_alarm R Alarm on ALERT temperature on channel 1
- temp2_crit_alarm R Alarm on ALERT temperature on channel 2
- temp1_emergency_alarm R Alarm on OT temperature on channel 1
- temp2_emergency_alarm R Alarm on OT temperature on channel 2
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