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Auto Create Input Provider Config Entry for Available MT Hardware (linux only).

Thanks to Marc Tardif for the probing code, taken from scan-for-mt-device.

The device discovery is done by this provider. However, the reading of input can be performed by other providers like: hidinput, mtdev and linuxwacom. mtdev is used prior to other providers. For more information about mtdev, check mtdev.

Here is an example of auto creation:

# using mtdev
device_%(name)s = probesysfs,provider=mtdev
# using hidinput
device_%(name)s = probesysfs,provider=hidinput
# using mtdev with a match on name
device_%(name)s = probesysfs,provider=mtdev,match=acer

# using hidinput with custom parameters to hidinput (all on one line)
%(name)s = probesysfs,

# you can also match your wacom touchscreen
touch = probesysfs,match=E3 Finger,provider=linuxwacom,
# and your wacom pen
pen = probesysfs,match=E3 Pen,provider=linuxwacom,

By default, ProbeSysfs module will enumerate hardware from the /sys/class/input device, and configure hardware with ABS_MT_POSITION_X capability. But for example, the wacom screen doesn’t support this capability. You can prevent this behavior by putting select_all=1 in your config line. Add use_mouse=1 to also include touchscreen hardware that offers core pointer functionality.