Edirol UA-101/UA-1000 driver

modulename: snd-usbmidi-lib.ko

and/or

snd-ua101.ko

configname: CONFIG_SND_USB_UA101

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>USB sound devices
└─>Edirol UA-101/UA-1000 driver
In linux kernel since version 2.6.34 (release Date: 2010-05-16)  
Say Y here to include support for the Edirol UA-101 and UA-1000
audio/MIDI interfaces.

To compile this driver as a module, choose M here: the module
will be called snd-ua101.

source code:
sound/usb//