RMI4 Function 55 (Sensor tuning)

configname: CONFIG_RMI4_F55

Linux Kernel Configuration
└─>Device Drivers
└─>Input device support
└─>RMI4 Function 55 (Sensor tuning)
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Say Y here if you want to add support for RMI4 function 55

Function 55 provides access to the RMI4 touch sensor tuning
mechanism.