[Linux-parport] [PATCH/RFC] ppdev: Adds support for async I/O with DMA and ECP

[Johann Klammer]

Hello,
This patch adds AIO+ECP+DMA capability to the userspace ppdev device.
For an example on how this may be used, see:
https://github.com/klammerj/dspar/blob/master/dump/main.c

Patch is against linux 3.7.0-rc1 from kernel.org

Was once used for this piece of hardware:
https://github.com/klammerj/dspar

Had to edit the code to match current kernel sources, but had no 
opportunity to test it, as new kernel f*s up the screen here (it does 
compile).

Old code can be found here:
http://members.aon.at/~aklamme4/parport/index.html

The plip2.c does not work very well, and is not included in patch.

regards,
JK

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