IBM Multiport Serial Adapter

modulename: icom.ko

configname: CONFIG_SERIAL_ICOM

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>IBM Multiport Serial Adapter
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This driver is for a family of multiport serial adapters
including 2 port RVX, 2 port internal modem, 4 port internal
modem and a split 1 port RVX and 1 port internal modem.

This driver can also be built as a module. If so, the module
will be called icom.

source code:
drivers/tty/serial/icom.c