Hi
The right way to do it is to use the existing API by exposing the inverter (there are existing examples in the tree, using the hierarchical model)...
>
A much simpler version can be written in a few minutes, see below...
Can something like that be used if the parent domain is not hierarchical (i.e. does not provide alloc(), but provides map() instead)?
In particular, gpio-rcar currently provides irq domain that is not hierarchical. As well as quite a few other gpiochips. Nikita
