Re: [PATCH] ARM: OMAP: Add support for dynamic GPIO switch update

[Jani Nikula <ext-jani.1.nikula@nokia.com>]

On Mon, 2008-12-15 at 17:29 +0200, ext Juha Yrjölä wrote:
> On Mon, Dec 15, 2008 at 04:52:32PM +0200, Jani Nikula wrote:
> 
> > The switches themselves don't change (nor does this patch support
> > changing them), but different kinds of external devices may be connected
> > to the GPIO swiches. It would be useful to be able to change the
> > notification callbacks and debounce timeouts according to the device.
> 
> Could you give an example use-case? 

For example a jack that supports headsets with a button. The button
could function by simply grounding one of the lines (connected to a
GPIO, of course) or by generating some sort of an interrupt pulse. The
jack might support other kinds of accessories as well. And the required
actions and settling times might differ vastly.

> If the gpio-switch framework starts
> getting extended and used more, it might be sensible to convert it to
> the general GPIO API, as Trilok suggested.

I agree with this, but I'm afraid I don't have the time to extend the
scope of my work that much right now.


BR,
Jani.


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