LED Flash Class Support

modulename: led-class-flash.ko


Linux Kernel Configuration
└─>Device Drivers
└─>LED Support
└─>LED Flash Class Support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This option enables the flash LED sysfs class in /sys/class/leds.
It wraps LED Class and adds flash LEDs specific sysfs attributes
and kernel internal API to it. You'll need this to provide support
for the flash related features of a LED device. It can be built
as a module.

source code: