[PATCH 3/6] gpio: Add GPIO support for the ST Multi-Function eXpander

[Linus Walleij]

On Thu, Feb 8, 2018 at 3:27 PM, Amelie Delaunay <amelie.delaunay at st.com> wrote:

> ST Multi-Function eXpander (MFX) can be used as GPIO expander.
> It has 16 fast GPIOs and can have 8 extra alternate GPIOs
> when other MFX features are not enabled.
>
> Signed-off-by: Amelie Delaunay <amelie.delaunay at st.com>

As mentioned I think this driver needs to:

- Move to drivers/pinctrl/pinctrl-stmfx.c similar to the sx150x controller.
- Pass a regmap around instead of the custom accessor functions.
- Maybe refactor and reuse STMPE infrastructure

Yours,
Linus Walleij