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UMS(4) Device Drivers Manual UMS(4)

ums
USB HID mouse, touchscreen and digitiser devices

ums* at uhidev?
wsmouse* at ums? mux 0

The ums driver provides support for USB HID mice, touchscreens and digitisers. Access to these devices is through the wscons(4) driver.
If the touchscreen sensor is poorly aligned, then xtsscale(1) should be used to provide calibration results to the ums driver.

xtsscale(1), uhidev(4), usb(4), wsmouse(4)

The ums driver first appeared in OpenBSD 2.8.

HID touchscreen and digitiser support was written by Robert Nagy and Matthieu Herrb then later merged into the generic ums driver by Edd Barrett.

Touchscreen and digitiser pressure sensitivity is not yet implemented.
August 10, 2013 OpenBSD-5.6