From: Pavel Machek <pavel@ucw.cz>
To: Jarkko Nikula <jarkko.nikula@bitmer.com>
Cc: "Pali Rohár" <pali.rohar@gmail.com>,
"Tony Lindgren" <tony@atomide.com>,
"Peter Ujfalusi" <peter.ujfalusi@ti.com>,
"Eduardo Valentin" <edubezval@gmail.com>,
"Lars-Peter Clausen" <lars@metafoo.de>,
"Aaro Koskinen" <aaro.koskinen@iki.fi>,
"Nishanth Menon" <nm@ti.com>,
"Sebastian Reichel" <sre@kernel.org>,
"Ivaylo Dimitrov" <ivo.g.dimitrov.75@gmail.com>,
"joerg Reisenweber" <joerg@openmoko.org>,
linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: Nokia N900 sound driver and ECI GPIOs
Date: Mon, 2 Jan 2017 10:33:45 +0100 [thread overview]
Message-ID: <20170102093345.GA20104@amd> (raw)
In-Reply-To: <4f150265-aa9b-c1f3-4634-9df8b320836b@bitmer.com>
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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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next prev parent reply other threads:[~2017-01-02 9:33 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-01 19:54 Nokia N900 sound driver and ECI GPIOs Pali Rohár
2017-01-01 22:36 ` Pavel Machek
2017-01-02 8:34 ` Peter Ujfalusi
2017-01-02 8:51 ` Pali Rohár
2017-01-02 12:53 ` Peter Ujfalusi
2017-01-02 12:58 ` Pali Rohár
2017-01-02 14:36 ` Peter Ujfalusi
2017-01-02 15:51 ` joerg Reisenweber
2017-01-02 17:02 ` Pali Rohár
2017-01-02 15:45 ` joerg Reisenweber
2017-01-02 9:01 ` Jarkko Nikula
2017-01-02 9:29 ` Pali Rohár
2017-01-02 9:33 ` Pavel Machek [this message]
2017-01-02 16:07 ` joerg Reisenweber
2017-01-02 8:23 ` Peter Ujfalusi
2017-01-02 8:44 ` Pali Rohár
2017-01-02 18:49 ` Aaro Koskinen
2017-01-02 20:01 ` Pali Rohár
2017-01-02 21:05 ` joerg Reisenweber
2017-01-04 22:27 ` Aaro Koskinen
2017-01-04 22:41 ` Pali Rohár
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