multi-touch-dev team mailing list archive

[Florian Echtler <floe@xxxxxxxxxxxxxx>]

On 11.05.2012 14:20, Henrik Rydberg wrote:
> > > Better yet, from the protocol details, it looks like it would be
> > > straight-forward to write an MT driver directly.
> > Can you suggest a kernel driver which I could use as base?
> Sure, drivers/input/mouse/bcm5974.c seems like a candidate. It also
> uses fixed endpoints directly.
I've finally found a bit of time to work on the kernel driver. I have a 
basic character driver up and running, however, I've hit a bit of a snag 
regarding the input subsystem.

AFAICT, all drivers including the bcm5974 example you mentioned are 
using interrupt endpoints. However, the Surface 2.0 has bulk endpoints 
which, consequently, require continuous polling. Does the input 
subsystem support that, or is a separate kernel thread required?

Florian
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