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(freebsd section 4)
man page for wsp

WSP(4)							   BSD Kernel Interfaces Manual 						    WSP(4)

NAME
wsp -- Wellspring touchpad driver SYNOPSIS
To compile this driver into the kernel, place the following lines into your kernel configuration file: device wsp device usb Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): wsp_load="YES" DESCRIPTION
The wsp driver provides support for the Apple Internal Trackpad device found in many Apple laptops. The driver simulates a three-button mouse using multi-finger tap detection. A single-finger press generates a left button click. A two-fin- ger tap maps to the right button; whereas a three-finger tap gets treated as a middle button click. wsp supports dynamic reconfiguration using sysctl(8) through nodes under hw.usb.wsp. Pointer sensitivity can be controlled using the sysctl tunable hw.usb.wsp.scale_factor. FILES
wsp creates a blocking pseudo-device file, /dev/wsp0, which presents the mouse as a sysmouse or mousesystems type device--see moused(8) for an explanation of these mouse types. SEE ALSO
sysmouse(4), usb(4), loader.conf(5), xorg.conf(5) (ports/x11/xorg), moused(8), sysctl(8) AUTHORS
The wsp driver was written by Huang Wen Hui <huanghwh@gmail.com>. BSD
February 7, 2014 BSD

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