On Wed, Nov 04, 2015 at 06:33:22PM +0000, Charles Keepax wrote:

> You should probably make a seperate driver within GPIO for this
> and then tie the two together, using an MFD. I appreciate that is
> more work but it is likely a nicer solution overall.

GPIO chips are small and simple enough that we've not worried about it
historically.  However my question here is why this is wm9713 specific -
the GPIO functionality is part of the AC'97 spec and present on many
AC'97 chips so it seems sensible to have something at the AC'97 level.
Unfortunately a quick check seems not to show anything indicating this
in the AC'97 capability information so we might want to make it opt in.