Linux Support for Multi I/O Cards?

TibbonZero asks: "I am using Digidesign's Digi001 audio interface with Pro-Tools 5.3.1 (an industry standard recording application), but this requires using Windows XP. I was wondering if there have been any attempts at writing drivers that would add Linux support to the soundcard? The Digi001 is a PCI based soundcard, with a breakout box. It provides 18 channels of I/O; 8 Analogue, 8 ADAT Optical, and 2 SPDIF as well as Midi I/O. There is a large users's group that supports most issues with the interfaces, and software, but few of them have the time or skills to program drivers, there is a wealth if information to be found there however. Are there any Slashdotters who are into audio and are willing to help out this community by programming drivers for it. Even getting a two channel stereo driver would be a great start (there is one available for Windows if reverse engineering it would help)." As an add-on to the question: What multi-I/O cards already have Linux support, and what do you think of them?