Messages in this thread | | | Subject | Re: [PATCH 1/2] Input: gpio_keys - Also send release events for ABS codes | From | Paul Cercueil <> | Date | Sat, 5 Nov 2016 12:58:00 +0100 |
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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?
Thanks, - Paul
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