[alsa-devel] How to handle jack detection through gpios

[Mark Brown]

On Fri, Nov 03, 2017 at 09:41:29AM +0100, Hans de Goede wrote:

> So I was wondering if there is a way to have a headphone
> switch without tying it to a card, while userspace will
> still know what to do ?

You can make a GPIO input device but obviously can't have anything
reporting through the sound card interface without a sound card.
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