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Re: MT Architecture: First Draft

 


On Jun 1, 2010, at 2:44 PM, Henrik Rydberg wrote:

Chase Douglas wrote:
[...]
One side note: After some more code digging, I realized that there are
some drivers that reside directly inside of X. Most of these drivers
talk directly to the hardware over the standard serial port, so they
bypass the kernel and EVDEV layer altogether. As far as I know, none of
them support multitouch; however, the serial port (as opposed to
bluetooth or usb) wacom driver is in X, and new wacom serial devices are multitouch. If we want to enable them, we may have to reinvent the wheel inside the kernel to export them through EVDEV. I *think* this would be a good thing overall, and no one upstream said the contrary when I asked whether the way forward for multitouch was through the kernel and evdev.

Ping Cheng of wacom have been very active during the patchwork for the MT slot extension, and it is very likely that they have something cooking for the MT protocol. If you want, I could try and see if they would be interested in
accelerating the development, targeting Maverick.

Henrik

Thanks, that would be fantastic.

d

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