On Tue, Mar 31, 2015 at 02:57:35PM -0500, Thor Thayer wrote: > Hi, > > I have a SPI gpio expander chip that is using the regmap framework. > There are some pushbuttons that I'd like to use the gpio_keys > framework for but only the first button press creates an input > event. > > It seems like my problem occurs because I'm only getting events on a > button press. The input_get_disposition() function toggles a local > copy of the button state [__change_bit(code, dev->key);] in the > input.c file. I think this function also needs to be called when the > button is released to toggle the dev->key state and re-arm for the > next button press. Yes. > > I tried enabling autorepeat but that causes an infinite loop in the > input_repeat_key() function. > > In both cases, it seems like the button press condition must be > cleared when the button is released. This seems like it should be > common for all GPIOs so I'm probably missing something. It sounds like your expander does not generate interrupt when the button is released and so gpio-keys driver is not aware of it. 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
