VIA CPU temperature sensor

modulename: via-cputemp.ko

configname: CONFIG_SENSORS_VIA_CPUTEMP

Linux Kernel Configuration
└─>Device Drivers
└─>Hardware Monitoring support
└─>VIA CPU temperature sensor
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
If you say yes here you get support for the temperature
sensor inside your CPU. Supported are all known variants of
the VIA C7 and Nano.

source code: