Single gpio shared by LED and switch?

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

Hi,

I'm wondering if there already exists a driver for a gpio that's connected
to both an LED and an input switch.

I'd expect such a hardware configuration to be fairly common, as gpios can be
a limited resource.
Most of the time the gpio would be in output mode, driving the LED, but at
regular intervals the mode would be changed for a very short moment to input,
to monitor the state of the switch.

I had a quick look at various drivers (and of course at
Documentation/gpio/drivers-on-gpio.txt), but couldn't find any.

Does such a hybrid of "leds-gpio" and "gpio-keys(-polled)" already exists?

Thanks in advance!

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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