[PATCH v2 24/28] pinctrl: Add support for the Lantic PEF2256 pinmux

[Linus Walleij]

Hi Herve,

thanks for your patch!

First: is this patch something we could merge separately? I don't see
any dependency on the other patches.

On Wed, Jul 26, 2023 at 5:04 PM Herve Codina <herve.codina at bootlin.com> wrote:

> The Lantiq PEF2256 is a framer and line interface component designed to
> fulfill all required interfacing between an analog E1/T1/J1 line and the
> digital PCM system highway/H.100 bus.
>
> This pinmux support handles the pin muxing part (pins RP(A..D) and pins
> XP(A..D)) of the PEF2256.
>
> Signed-off-by: Herve Codina <herve.codina at bootlin.com>

So it is a bridge chip? Please use that terminology since Linux
DRM often talks about bridges.

> +++ b/drivers/pinctrl/pinctrl-pef2256-regs.h
(...)
> +#include "linux/bitfield.h"

Really? I don't think there is such a file there.

Do you mean <linux/bitfield.h> and does this even compile?

> diff --git a/drivers/pinctrl/pinctrl-pef2256.c b/drivers/pinctrl/pinctrl-pef2256.c
(...)
> +struct pef2256_pinctrl {
> +       struct device *dev;
> +       struct regmap *regmap;
> +       enum pef2256_version version;
> +       struct {
> +               struct pinctrl_desc pctrl_desc;
> +               const struct pef2256_function_desc *functions;
> +               unsigned int nfunctions;
> +       } pinctrl;

Uh anonymous struct... can't you just define the struct separately
with a name? Or fold it into struct pef2256_pinctrl without the
additional struct? Thanks.

Otherwise it looks neat!

Yours,
Linus Walleij