CONFIG_RT2800_LIB_MMIO (not configurable)

modulename: rt2800mmio.ko

configname: CONFIG_RT2800_LIB_MMIO

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wireless LAN
└─>Ralink driver support
└─>RT2800_LIB_MMIO
In linux kernel since version 3.13 (release Date: 2014-01-19)  
source code:
drivers/net/wireless/ralink/rt2x00/rt2800mmio.c