HiSilicon Hi6421 PMU/Codec IC

modulename: hi6421-pmic-core.ko

configname: CONFIG_MFD_HI6421_PMIC

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Device Tree and Open Firmware support
└─>HiSilicon Hi6421 PMU/Codec IC
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Add support for HiSilicon Hi6421 PMIC. Hi6421 includes multi-
functions, such as regulators, RTC, codec, Coulomb counter, etc.
This driver includes core APIs _only_. You have to select
individul components like voltage regulators under corresponding
menus in order to enable them.
We communicate with the Hi6421 via memory-mapped I/O.

source code: