linux-kernel - Re: [PATCH v2 08/13] pinctrl: renesas: pinctrl-rzg2l: Add function pointers for reading/writing OEN register

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Message-ID: <CA+V-a8usJRNV7TiMQ_W-+FLdsEAfMMzy8W68HF=kK7dCN_wQug@mail.gmail.com>
Date: Tue, 28 May 2024 20:42:36 +0100
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Magnus Damm <magnus.damm@...il.com>, linux-renesas-soc@...r.kernel.org, 
	linux-gpio@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Biju Das <biju.das.jz@...renesas.com>, 
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>, 
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v2 08/13] pinctrl: renesas: pinctrl-rzg2l: Add function
 pointers for reading/writing OEN register

Hi Geert,

Thank you for the review.

On Wed, May 22, 2024 at 1:44 PM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
>
> Hi Prabhakar,
>
> On Tue, Apr 23, 2024 at 7:59 PM Prabhakar <prabhakar.csengg@...ilcom> wrote:
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> >
> > This patch introduces function pointers, read_oen() and write_oen(), in the
> > struct rzg2l_pinctrl_data to facilitate reading and writing to the PFC_OEN
> > register. On the RZ/V2H(P) SoC, unlocking the PWPR.REGWE_B bit before
> > writing to the PFC_OEN register is necessary, and the PFC_OEN register has
> > more bits compared to the RZ/G2L family. To handle these differences
> > between RZ/G2L and RZ/V2H(P) and to reuse the existing code for RZ/V2H(P),
> > these function pointers are introduced.
> >
> > Additionally, this patch populates these function pointers with appropriate
> > data for existing SoCs.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> > ---
> > RFC->v2
> > - No change
>
> Thanks for the update!
>
> > --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> > +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> > @@ -261,6 +261,8 @@ struct rzg2l_pinctrl_data {
> >         void (*pwpr_pfc_unlock)(struct rzg2l_pinctrl *pctrl);
> >         void (*pwpr_pfc_lock)(struct rzg2l_pinctrl *pctrl);
> >         void (*pmc_writeb)(struct rzg2l_pinctrl *pctrl, u8 val, void __iomem *addr);
> > +       u32 (*read_oen)(struct rzg2l_pinctrl *pctrl, u32 caps, u32 offset, u8 pin);
> > +       int (*write_oen)(struct rzg2l_pinctrl *pctrl, u32 caps, u32 offset, u8 pin, u8 oen);
>
> Please use consistent naming: "pmc_writeb" uses <noun>_<verb> ordering,
> "read_oen" uses <verb>_<noun> ordering.
>
Ok, I'll rename them to oen_read() and oen_write().

Cheers,
Prabhakar