1Kernel 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 50