After a quick look it seems the deasda driver includes a layer that kind of resembles the cia402 driver.
The drive itself is cia402.
deasda gives a large set of hal pins, with "generic" and cia402 one needs to puzzle that together self.
These drivers don't do very much more than translate between pdos and hal names, there is no real processing.
Some logic is in there, but there is no performance reason to select one or the other.