Re: List archive broken / H5450 headphone socket

Phil,
  Do you have it on pretty good authority that GPIO76 is really a headphone
detect input? I'm about to take a quick look at this issue -- I know that
the ak4535 has headset detection circuitry and headset state
(plugged/unplugged) is accessible via it's control registers...but do you
know for sure that this functionality is duplicated or otherwise tied in to
a PXA GPIO line?

Jim

Phil Blundell wrote:
>
> On Sat, 2005-03-19 at 20:38 +0700, Ross Golder wrote:
> > When I get some time, I'll try to hack that code into a panel applet
> > that can switch between the main speaker or the headphones. Although it
> > begs the question - is the 5450 capable of recognising when there are
> > headphones connected and trigger it automatically (no need for a manual
> > user control)?
>
> Yes. GPIO76 is the headphone detect input, and you can configure it to
> generate an interrupt. Luca De Cicco did have a go at writing a kernel
> patch to make use of that, but as far as I know he was never able to get
> it working properly. You should be able to find his code in the
> archives for this list, if you want to try to fix that yourself.
>
> p.
>
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-- 
----------------------------------------------------------------------
James T. Kaba                   
Sarnoff Corporation   There are 10 kinds of people in the world:
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