On 8 January 2013 16:48, Laxman Dewangan [off-list ref] wrote:

I think we can do it in the gpio chip driver inthe function
xxx_gpio_irq_set_type().
When you register any irq and if this callback is available from gpio chip
driver then this will get called. and so the setting the pi to input mode as
well as putting the pin in GPIO mode can be done here.  This is what we are
doing it in gpio-tegra driver.

Hmm... So, the initial question was, is somebody setting gpio in input mode?
There were no bugs reported, it was just a query. As most of the stuff would
work as per my earlier explanation.

But yes, your suggestion makes sense too.. I would rather do it in the gpiolib
routine instead of adding this in every driver.

@Linus/Grant: What do you say?