LTR-501ALS-01 light sensor

modulename: ltr501.ko

configname: CONFIG_LTR501

Linux Kernel Configuration
└─>Device Drivers
└─>Industrial I/O support
└─>Light sensors
└─>LTR-501ALS-01 light sensor
In linux kernel since version 3.15 (release Date: 2014-06-08)  
If you say yes here you get support for the Lite-On LTR-501ALS-01
ambient light and proximity sensor. This driver also supports LTR-559
ALS/PS or LTR-301 ALS sensors.

This driver can also be built as a module. If so, the module
will be called ltr501.

source code: