[Libdlo] Next udlfb patch series for linux-next (2.6.34)

[Bernie Thompson]

The next patch series for udlfb is "nearly ready" for submission, hopefully
will be coming in the next few days.

Testing and any problem reports would be helpful.  The code that will be
submitted is at http://git.plugable.com/gitphp/index.php?p=udlfb&a=summary

There are many dozens of checkins in git as inter-related problems have been
explored and the code incrementally improved.  Before submitting, I'll be
reconstituting them into a smaller number of more analyzable email patches:
make everything checkpatch.pl clean, reorganize things to match final
layout, then per-feature patches. We'll see how that goes.

Major features:

* Support for standard fbdev clients (via defio)
* Improved performance (about 20% average improvement over a variety of
"benchmarks" like x11perf, gtkperf, glxgears)
* Asynchronous urb dispatch and no mutexes held for extended periods during
render
* Slightly lower CPU consumption, less touching memory, slightly higher
average compression
* Better handling of switching from X to fbcon VTs and back
* Driver should unload cleanly from either bottom-up (USB removal) or
top-down (shutdown).  Problem reports welcome.
* Performance metrics reported through sysfs (read
/sys/class/graphics/fbX/*metrics*)
* EDID reported through sysfs (read /sys/class/graphics/graphics/fbX/edid)
* Can compile as module with or without defio or sys_ dependencies
* Lots of cleanup - tested on 64-bit, closer to endian clean, checkpatch.plclean

What it does not have:

* The defio rendering problems (e.g. with xf86-video-fbdev X server) are
still unsolved
* Still 16bpp only.  Pseudo-truecolor 32->16 is on the wishlist.
* No DL 1x5 SKU detection yet (you'll get a blank screen if your monitor's
res exceeds the adapter)

Best wishes,
Bernie
http://plugable.com/
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