iio: Gpio trigger driver. Happy with interface?

iio: Gpio trigger driver. Happy with interface?

[Jonathan Cameron]

Hi all,

I have no idea how often people are using the GPIO trigger driver but what I am
looking for here is a discussion (hopefully brief) of the interface and means
of registering gpio triggers.  To my mind it makes little sense to have this
via a nice userspace control like the sysfs triggers.  If you are using a gpio
for a trigger it is probably a hardware design related descision.

Anyhow if people don't like what is there please speak up now and if you
do like it then speak up too!

I'd like to get this out of staging in the next cycle (along with lots
of other things ;)

Jonathan

Re: iio: Gpio trigger driver. Happy with interface?

[Lars-Peter Clausen]

On 04/14/2013 01:57 PM, Jonathan Cameron wrote:
> Hi all,
> 
> I have no idea how often people are using the GPIO trigger driver but what I am
> looking for here is a discussion (hopefully brief) of the interface and means
> of registering gpio triggers.  To my mind it makes little sense to have this
> via a nice userspace control like the sysfs triggers.  If you are using a gpio
> for a trigger it is probably a hardware design related descision.
> 

Just remembered I wanted to your mail...

I think the interface is fine, there isn't much of an interface anyway. One
suggestion though, maybe make it one interrupt per device. And the name is
outdated, there are no gpio specific bits in the driver anymore. It's a pure
IRQ based trigger these days.

- Lars