6 Addresses scanned: I2C 0x2e
11 Steve Glendinning <steve.glendinning@smsc.com>
16 The Standard Microsystems Corporation (SMSC) EMC2103 chips
17 contain up to 4 temperature sensors and a single fan controller.
19 Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
20 triggered if the rotation speed has dropped below a programmable limit. Fan
21 readings can be divided by a programmable divider (1, 2, 4 or 8) to give
22 the readings more range or accuracy. Not all RPM values can accurately be
23 represented, so some rounding is done. With a divider of 1, the lowest
24 representable value is 480 RPM.
26 This driver supports RPM based control, to use this a fan target
27 should be written to fan1_target and pwm1_enable should be set to 3.
29 The 2103-2 and 2103-4 variants have a third temperature sensor, which can
30 be connected to two anti-parallel diodes. These values can be read
31 as temp3 and temp4. If only one diode is attached to this channel, temp4
32 will show as "fault". The module parameter "apd=0" can be used to suppress
33 this 4th channel when anti-parallel diodes are not fitted.