Mellanox Mellanox FAN driver

modulename: mlxreg-fan.ko

configname: CONFIG_SENSORS_MLXREG_FAN

Linux Kernel Configuration
└─>Device Drivers
└─>Hardware Monitoring support
└─>Mellanox Mellanox FAN driver
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This option enables support for the FAN control on the Mellanox
Ethernet and InfiniBand switches. The driver can be activated by the
platform device add call. Say Y to enable these. To compile this
driver as a module, choose 'M' here: the module will be called
mlxreg-fan.

source code: