The cs4281 driver is for Cirrus Logic 4281 (CrystalClear PCI) sound card.

This driver is referred to Minix(3.4.0) es1371 driver,
Linux snd_cs4281 driver and Cirrus Logic 4281 Datasheet (Rev 1.1).

Revision 1.0 2016/12/28
Authored by Jia-Ju Bai <baijiaju1990@163.com>
