| 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 |