I have been able to use gpio-keys to create a key input which can either suspend or wake my device using KEY_SLEEP and KEY_WAKEUP event codes respectively, but not both. I would like to use a single gpio to control this behavior. On falling edge the KEY_SLEEP would be emitted and the system would suspend. On the rising edge the KEY_WAKEUP would be emitted and the system would resume. Does a driver exist in input or elsewhere that can create this behavior for me? I have not yet been able to find an existing driver for this use case. I am considering creating a driver similar to gpio-keys that would create this behavior. Sleep and wake are my desired events but in a general case one could emit any two codes on the rising/falling edges. I examined some uses of SW_LID. However what I found generally relied on user space to perform the response action (suspend/resume) once the lid event was emitted. I would like this to be done completely in kernel space. Thank you, Dexter
