TMPTX39XX/49XX SIO support

modulename: serial_txx9.ko

configname: CONFIG_SERIAL_TXX9

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>TMPTX39XX/49XX SIO support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
source code:
drivers/tty/serial/serial_txx9.c