Ricoh RC5T583 Power Management system device

modulename: rc5t583.ko

configname: CONFIG_MFD_RC5T583

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Ricoh RC5T583 Power Management system device
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Select this option to get support for the RICOH583 Power
Management system device.
This driver provides common support for accessing the device
through i2c interface. The device supports multiple sub-devices
like GPIO, interrupts, RTC, LDO and DCDC regulators, onkey.
Additional drivers must be enabled in order to use the
different functionality of the device.

source code: