Question on States monitoring

[Andrew Jeffery]

Hi Andres,

On Tue, 15 May 2018, at 01:16, Andres Oportus wrote:
> Are there any ongoing efforts on expanding States (say provided by GPIOs)
> monitoring/management?  I see that phosphor-state-manager has
> Chassis/Host/BMC states that are placed onto DBUS but not a more generic
> mechanism.  On the GPIO specific side, I see that phosphor-gpio-monitor
> allows for interrupt driven GPIO monitoring (seemly only used under a
> gpio-keys driver with /dev/input for Power's checkstop monitoring?), but no
> generic GPIO setting/getting for those not allowing interrupt type
> monitoring (say output GPIOs).

It's not clear to me what you're looking for here. Are you hoping for something to expose the GPIOs on DBus? I don't think we have anything like that, which is more of a design philosophy thing (we should probably provide a higher-level capability on DBus, not just directly expose GPIOs).

Alternatively if you're looking to handle GPIOs from your application, I would recommend libgpiod: 

https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/

Cheers,

Andrew