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    SubjectRe: Nokia N900 sound driver and ECI GPIOs
    Hi!

    > > I'd like to get detection of headset button presses to work in recent
    > > kernels, but could not figure it out :-(.
    > >
    > My vague memory doesn't tell how basic button press detection was
    > implemented in Maemo kernel. Was it codec, same voltage detection
    > circuit than ECI or some another GPIO? I don't even remember did we
    > implement it for the MeeGo N900 developer edition :-(

    Another GPIO, as far as I can tell. There was some delay logic in 2.6
    kernel (it removed false events happening when jack was inserted),
    other that that it should be quite simple. (But I did not yet figure
    it out in 4.x kernel).

    Pavel
    --
    (english) http://www.livejournal.com/~pavelmachek
    (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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