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References: <20230726150225.483464-1-herve.codina@bootlin.com> <20230726150225.483464-25-herve.codina@bootlin.com>
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From:   Linus Walleij <linus.walleij@linaro.org>
Date:   Mon, 7 Aug 2023 15:05:15 +0200
Message-ID: <CACRpkdYXCQRd3ZXNGHwMaQYiJc7tGtAJnBaSh5O-8ruDAJVdiA@mail.gmail.com>
Subject: Re: [PATCH v2 24/28] pinctrl: Add support for the Lantic PEF2256 pinmux
To:     Herve Codina <herve.codina@bootlin.com>
Cc:     "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>, Andrew Lunn <andrew@lunn.ch>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>, Lee Jones <lee@kernel.org>,
        Qiang Zhao <qiang.zhao@nxp.com>, Li Yang <leoyang.li@nxp.com>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>,
        Shengjiu Wang <shengjiu.wang@gmail.com>,
        Xiubo Li <Xiubo.Lee@gmail.com>,
        Fabio Estevam <festevam@gmail.com>,
        Nicolin Chen <nicoleotsuka@gmail.com>,
        Christophe Leroy <christophe.leroy@csgroup.eu>,
        Randy Dunlap <rdunlap@infradead.org>, netdev@vger.kernel.org,
        linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, alsa-devel@alsa-project.org,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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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=E2=80=AFPM Herve Codina <herve.codina@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@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