The SFP driver requires GPIO-s, it only knows how to use GPIO-s, and
its a generic driver,
it covers any device that has an SFP port that is implemented per spec.
So, I cannot just extend it to suit my devices needs and I don't see
how can I extend it in
a generic manner so that it controls the pins directly via a regmap
for example, especially since
each switch has a different number of SFP ports and thus pins and a
different register layout.

I have added Andrew Lunn as he is one of the maintainers of PHYLIB
under which the SFP driver
is, he may have some input on how to proceed with this.

I honestly think that we have some kind of misunderstanding here and
look forward to resolving it.

Hi Robert

Can you describe your hardware and regmap in a bit more detail. What
do these registers look like? How do they map to the SFP cage pins?

	  Andrew