Intersil ISL12057

modulename: rtc-isl12057.ko

configname: CONFIG_RTC_DRV_ISL12057

Linux Kernel Configuration
└─>Device Drivers
└─>Real Time Clock
└─>I2C support
└─>Intersil ISL12057
In linux kernel since version 3.14 (release Date: 2014-03-30)  
If you say yes here you get support for the Intersil ISL12057
I2C RTC chip.

This driver can also be built as a module. If so, the module
will be called rtc-isl12057.

source code: