support for gpio as ipmb sensor

[Andrew Jeffery]

Hi Naveen,

On Tue, 5 Oct 2021, at 23:46, naveen moses wrote:
> Hi All,
>
> we have a couple of gpios ( input ) accessed via ipmb commands in our platform.
> which cannot be directly monitored using gpio monitor.

What do you mean when you say "cannot be directly monitored using gpio 
monitor"?

>
> our idea is to expose them as ipmb sensors which has gpio state as 
> property which is updated based
> on the current state of the gpio.
>
> at present there is no compatible interface under 
> xyz/openbmc_project/sensors for gpio as sensor.
>
> So is this acceptable to create a new interface for gpio state under 
> xyz/openbmc_project/sensors :
> interface name : gpioState
> which has a property named value whose possible values are boolean 
> (true or false).

What about modelling the behaviour the GPIO state represents rather 
than just providing a DBus interface to the GPIO values?

Andrew