Hi Henrik,

On Mon, Sep 01, 2008 at 10:08:35PM +0200, Henrik Rydberg wrote:

Currently, the Apple bcm5974 driver only mimics a synaptics touchpad, not a mouse.
This creates unnecessary complications on systems where the synaptics driver is absent
or not configured, such as in a completely new system, or a text console.

Mousedev should provide a reasonable emulation of standard mouse
giving user chance to configure the system properly. There is no need
to task the driver to provide such emulation and therefore I will not
apply this patch.

This patch
provides a default compatibility configuration, which works as a multi-button mouse,
implemented using rudimentary multi-finger options. It yields the following benefits:

* A default Xorg configuration will pick up the mouse input interface, resulting in a
functional mouse pointer out-of-the-box on many systems.

This happens automatically with Synaptics hardware on newer
distributions (at least Fedora 9 does this). As far as I know
SYnaptics driver does no look for specific product but for a certain
features of the input device and so shoudl work for BCM as well.

* Two-finger scroll emulates a mouse wheel.

* Three-finger swipe emulates a horizontal mouse wheel.

* Multi-finger clicks emulate the middle and right mouse buttons.

The kenel driver should only do as little translation as possible,
allowing userspace to decide how to implement more fancy features.

* The mouse driver also works with gpm in text consoles, providing cut-and-paste functionality.

Does not mousedev emulation work from GPM? Also GPM has evdev protocol
support which should work very well with synaptics-like touchpads.

-- 
Dmitry