linux-kernel - Re: [PATCH 3/3] clk: renesas: rzv2h: Simplify rzv2h_cpg_assert()/rzv2h_cpg

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Message-ID: <Z_fyvYse83Fj1IIK@tom-desktop>
Date: Thu, 10 Apr 2025 18:33:01 +0200
From: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: tomm.merciai@...il.com, linux-renesas-soc@...r.kernel.org,
	biju.das.jz@...renesas.com, Pavel Machek <pavel@...x.de>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Magnus Damm <magnus.damm@...il.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
	linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] clk: renesas: rzv2h: Simplify
 rzv2h_cpg_assert()/rzv2h_cpg_deassert()

Hi Geert,
Thanks for your review.

On Thu, Apr 10, 2025 at 06:25:13PM +0200, Geert Uytterhoeven wrote:
> Hi Tommaso,
> 
> On Mon, 17 Mar 2025 at 09:33, Tommaso Merciai
> <tommaso.merciai.xr@...renesas.com> wrote:
> > rzv2h_cpg_assert() and rzv2h_cpg_deassert() functions are similar. Share
> > this code via __rzv2h_cpg_assert(). This avoid code duplication.
> >
> > Reported-by: Pavel Machek <pavel@...x.de>
> > Closes: https://lore.kernel.org/cip-dev/Z9QA9rwuXCuVbOXp@duo.ucw.cz/
> > Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
> 
> Thanks for your patch!
> 
> Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
> i.e. will queue in renesas-clk for v6.16.
> 
> > --- a/drivers/clk/renesas/rzv2h-cpg.c
> > +++ b/drivers/clk/renesas/rzv2h-cpg.c
> > @@ -652,16 +652,17 @@ rzv2h_cpg_register_mod_clk(const struct rzv2h_mod_clk *mod,
> >                 mod->name, PTR_ERR(clk));
> >  }
> >
> > -static int rzv2h_cpg_assert(struct reset_controller_dev *rcdev,
> > -                           unsigned long id)
> > +static int __rzv2h_cpg_assert(struct reset_controller_dev *rcdev,
> > +                             unsigned long id, bool assert)
> >  {
> >         struct rzv2h_cpg_priv *priv = rcdev_to_priv(rcdev);
> >         unsigned int reg = GET_RST_OFFSET(priv->resets[id].reset_index);
> >         u32 mask = BIT(priv->resets[id].reset_bit);
> >         u8 monbit = priv->resets[id].mon_bit;
> > -       u32 value = mask << 16;
> > +       u32 value = assert ? (mask << 16) : ((mask << 16) | mask);
> 
> Do you mind if I change this to
> 
>     u32 value = mask << 16;
> 
>     if (!assert)
>             value |= mask;
> 
> while applying?

Fine to me, thanks.

Regards,
Tommaso

> 
> >
> > -       dev_dbg(rcdev->dev, "assert id:%ld offset:0x%x\n", id, reg);
> > +       dev_dbg(rcdev->dev, "%s id:%ld offset:0x%x\n",
> > +               assert ? "assert" : "deassert", id, reg);
> >
> >         writel(value, priv->base + reg);
> >
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> -- 
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds