Re: [PATCH] Synaptics TouchPad driver for 2.5.70

[James Simmons]

> > > > Just as a idea for API. How about ABS_AREA or REL_AREA instead of 
> > > > ABS_MISC. The idea is the pressure value returned should be about 
> > > > the same if one presses hard with one finger or softly with a whole 
> > > > hand.
> > > 
> > > Huh? Force = Pressure x Area ... I think you're mixing up force and
> > > pressure here.
> > 
> > OOps. Your right. I'm thinking the hardware returns a force value. What I 
> > meant is since we have the hardware returning the pressure and the area 
> > this data can be used. Knowing the area over which a pressure is applied 
> > is a good thing. What do you think?
> 
> Definitely. Still it doesn't cover the multi-tap/gesture stuff.

How about EV_AREA
codes = "which area"  1, 2, 3
value = "How big of a area" 

struct input_event {
        struct timeval time;
        __u16 type;               EV_AREA
        __u16 code;	          AREA_1
        __s32 value;		  20
};