Stéphane Chatty wrote: > > Le 9 mars 10 à 22:59, Henrik Rydberg a écrit : >> >> On the contrary, the MT protocol is dependent on one of the >> single-touch events >> BTN_TOUCH or ABS_PRESSURE to be present in the event stream for proper >> device >> identification and for correct handling of zero-finger events. The latter >> because at least one value (BTN_TOUCH or ABS_PRESSURE) must change >> state to pass >> through input filtering when no fingers are present. This is what needs >> clarification. > > Someone has pointed this to me a few weeks ago and tbh I had the feeling > that this is a bug in the protocol that we failed to notice last summer. > I agree with you that BTN_TOUCH plugs the hole, but I don't find it very > satisfactory that we need one protocol to inform another. Frankly, I never even imagined there would be pure MT devices without support for the existing single-touch applications. But sure, it was an oversight at the time. Henrik -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
