Le 11 mai 2012 à 12:54, multi-touch-dev-bounces+chatty=enac...@lists.launchpad.net a écrit :
> Hello Henrik, > > On 11.05.2012 11:38, Henrik Rydberg wrote: >>> I've written an open-source driver for the Microsoft Surface 2.0 touch >>> screen, which is available here: https://github.com/floe/surface-2.0/ >> Great stuff! Yesterday, I was wondering when something like this would >> appear. :-) > Good timing, then ;-) > >>> NB: right now, the provided tools just display the data and don't pass >>> it on to Linux, so interaction with utouch isn't possible right now. But >>> I hope I'll get around to writing an uinput bridge next week. If >>> somebody could point me to a recent uinput example for multitouch, that >>> would be awesome. >> 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? > > Also, slightly technical issue: the Surface has one single USB interface > with several bulk endpoints: one for coordinate data, one for raw image > data. AFAICT it's not possible to handle different endpoints in the same > interface with different drivers? Consequently, the MT driver should > also provide some sort of a video interface... (probably not a full V4L > interface, though, as there aren't any adjustable parameters to speak of). V4L rings a bell. I had planned to work on the Surface 2 and had no time to do it. But I had not realized that it made the video available. One of my plans was to work on a device that does this because I suspect that Linux input and V4L will need to be somehow interconnected some day. Or at least we'll need some kernel + userland architecture pattern to account for chains like device -> video -> tracking -> mt-input -> app. I was waiting to have sample code available before mentioning this, apparently the time is coming. Cheers, St. _______________________________________________ Mailing list: https://launchpad.net/~multi-touch-dev Post to : multi-touch-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~multi-touch-dev More help : https://help.launchpad.net/ListHelp
