Messages in this thread | | | Date | Sat, 14 Jun 2003 10:55:52 +0200 | From | Vojtech Pavlik <> | Subject | Re: [PATCH] Synaptics TouchPad driver for 2.5.70 |
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On Sat, Jun 14, 2003 at 12:57:14AM +0100, James Simmons wrote: > > > > > > 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 > };
Nice, but no devices are reporting such detailed info. If you have a multi-finger tap, then the area reported is the area between the fingers.
-- Vojtech Pavlik SuSE Labs, SuSE CR - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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