Re: [PATCH] Input: synaptics - add support for ForcePads

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On Thu, Oct 30, 2014 at 10:38:55AM +1000, Peter Hutterer wrote:
> On Tue, Sep 09, 2014 at 03:57:25PM -0700, Dmitry Torokhov wrote:
> > From: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> > 
> > ForcePads are found on HP EliteBook 1040 laptops. They lack any kind of
> > physical buttons, instead they generate primary button click when user
> > presses somewhat hard on the surface of the touchpad. Unfortunately they
> > also report primary button click whenever there are 2 or more contacts
> > on the pad, messing up all multi-finger gestures (2-finger scrolling,
> > multi-finger tapping, etc). To cope with this behavior we introduce a
> > delay (currently 50 msecs) in reporting primary press in case more
> > contacts appear.
> 
> can we assign INPUT_PROP_FORCEPAD to this? or PRESSUREPAD or something if
> we're worried about trademarks. This is something I'd like to know in
> userspace, we can then ignore clicks completely and do the rest ourselves. 

Hmm, I think we can, but I'd like to wait to see if there are more
models with such touchpads (I sure hope there isn't; lack of tactile
feedback on presses is not the best user experience so I hope this
initiative dies a quick death).

Thanks.

-- 
Dmitry
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