LED support for LM3642 Chip

modulename: leds-lm3642.ko

configname: CONFIG_LEDS_LM3642

Linux Kernel Configuration
└─>Device Drivers
└─>LED Support
└─>I2C support
└─>LED support for LM3642 Chip
In linux kernel since version 3.1 (release Date: 2011-10-24)  
This option enables support for LEDs connected to LM3642.
The LM3642 is a 4MHz fixed-frequency synchronous boost
converter plus 1.5A constant current driver for a high-current
white LED.

source code:
drivers/leds/leds-lm3642.c