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Peter Hutterer
3d7ac1c655
udev-builtin-input_id: any i2c mouse is a pointing stick
Where we have a device that looks like a mouse and is connected over i2c, tag it as pointing stick. There is no such thing as a i2c mouse. Even touchpads that aren't recognized by the kernel will not show up as i2c mouse - either the touchpad follows the Win8.1 specs in which case the kernel switches it to multitouch mode and it shows up like a touchpad. The built-in trackpoint, if any, is then the i2c mouse device. Where the touchpad doesn't follow the spec, the kernel will not handle it and the touchpad remains on the PS/2 legacy bus - not i2c. Hence we can assume that any i2c mouse device is really a pointing stick.
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