Re: [PATCH 8/8] Add BTN_TOUCH to Synaptics driver. Update mousedev.

[Pavel Machek <pavel@suse.cz>]

Hi!

> > > > > One thing I tried to avoid is a 'device class' kind of field, that'd
> > > > > tell if a device is a mouse a touchpad, touchscreen, tablet, whatever.
> > > > > I tried to avoid it because there are devices that don't fall into any
> > > > > predefined class and if we make enough classes, someone someday will
> > > > > make a device that won't fit again.
> > > > 
> > > > I believe having "is overlaid over screen" bit gets it right :-).
> > > 
> > > Tablets aren't. And they're handled the same way as touchscreens.
> > 
> > Ouch, so what's the difference between tablet and touchpad? Is it only
> > in a way you are expected to use it? In such case "this is touchpad"
> > bit is probably needed :-(.
> 
> For a tablet, the cursor follows the pen movement all the time. For a
> touchpad, if you lift the finger and place it elsewhere, nothing
> happens. This way you can move the cursor further by repeatedly stroking
> the pad.

But difference is only in software, right? You could use synaptics as
a tablet, its just little small. So perhaps "this is touchpad" bit is
needed.

								Pavel
-- 
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]