On Sat, Nov 05, 2016 at 12:58:00PM +0100, Paul Cercueil wrote: > On 03/11/2016 17:21, Dmitry Torokhov wrote: > >On Tue, Nov 01, 2016 at 11:25:03AM +0100, Paul Cercueil wrote: > >>Right now, the gpio-keys driver is mostly used with EV_KEY event types. > >>However, this driver (and its devicetree bindings) support specifying > >>a different input type, like EV_ABS, even though this doesn't work in > >>practice: "key pressed" events are correctly received and treated, but > >>"key released" are silently ignored. > >> > >>With this commit, keys configured as EV_ABS will inject an event with > >>the value 0 when released. > >No, this will break setups like this: > > > >gpio0 - ABS_X - 0 > >gpio1 - ABS_X - 1 > >gpio2 - ABS_X - 2 > >... > >gpio7 - ABS_X - 7 > > > >- something like a slider built on top of gpios. > > So what would you suggest for the implementation of a hat / d-pad on > top of GPIOs? Maybe we should allow specifying "release" value for ABS GPIOs. Thanks. -- Dmitry -- 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
