On Sat, Dec 26, 2015 at 03:04:43PM -0800, Richard Pospesel wrote: > Hi, > > I'm working on a touchpad kernel driver (in the psmouse module) for BYD > touchpads. However, Xorg always selects the evdev 'pointer' driver (not > even the evdev 'touhpad' driver). I've browsed through other touchpad > drivers in the psmouse module, and I don't seem to be missing anything > obvious that my driver would need to do. > > What do I need to do in my kernel driver for Xorg to load the synaptics > driver rather than the evdev driver? > > kernel source: > https://github.com/pospeselr/linux/blob/master/data/drivers/input/mouse/byd.c > Xorg.0.log: http://pastebin.com/GkCVHu9t > > I have already tried enabling the MatchDevicePath /dev/input/event* line. a touchpad doesn't have relative x/y axes, it provides absolute x/y axes and the conversion into relative events is done by userspace, i.e. synaptics/evdev/libinput/etc.
for a touchpad, you need at least BTN_TOUCH, BTN_TOOL_FINGER and ABS_X/Y. for a multi-touch capable touchpad, you also need the matching multitouch axes. btw, the MatchIsTouchpad hooks onto udev's ID_INPUT_TOUCHPAD - unless that property is set, the synaptics driver won't be picked. Cheers, Peter _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
