linux-kernel - RE: [PATCH v3 2/8] pwm: rzg2l-gpt: Add info variable to struct rzg2l_gpt

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Message-ID:
 <TY3PR01MB113463D0252F16927DEC9E9A286DBA@TY3PR01MB11346.jpnprd01.prod.outlook.com>
Date: Mon, 1 Dec 2025 10:56:23 +0000
From: Biju Das <biju.das.jz@...renesas.com>
To: Uwe Kleine-König <ukleinek@...nel.org>, biju.das.au
	<biju.das.au@...il.com>
CC: Geert Uytterhoeven <geert+renesas@...der.be>, magnus.damm
	<magnus.damm@...il.com>, "linux-pwm@...r.kernel.org"
	<linux-pwm@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-renesas-soc@...r.kernel.org"
	<linux-renesas-soc@...r.kernel.org>, Prabhakar Mahadev Lad
	<prabhakar.mahadev-lad.rj@...renesas.com>, Tommaso Merciai
	<tommaso.merciai.xr@...renesas.com>
Subject: RE: [PATCH v3 2/8] pwm: rzg2l-gpt: Add info variable to struct
 rzg2l_gpt_chip

Hello Uwe,

> -----Original Message-----
> From: Uwe Kleine-König <ukleinek@...nel.org>
> Sent: 30 November 2025 08:26
> Subject: Re: [PATCH v3 2/8] pwm: rzg2l-gpt: Add info variable to struct rzg2l_gpt_chip
> 
> Hello Biju,
> 
> thanks for your patience, now I finally come around to tackle your series.

Thanks for the review.

> 
> On Tue, Sep 23, 2025 at 03:45:06PM +0100, Biju wrote:
> >
> > @@ -46,7 +59,6 @@
> >
> >  #define RZG2L_GTCR_CST		BIT(0)
> >  #define RZG2L_GTCR_MD		GENMASK(18, 16)
> > -#define RZG2L_GTCR_TPCS		GENMASK(26, 24)
> 
> Even though this is only used once now, I wonder if it's beneficial to keep the name to have the
> definitions relevant to registers all together.

OK, I will keep the definition.

> 
> >  #define RZG2L_GTCR_MD_SAW_WAVE_PWM_MODE	FIELD_PREP(RZG2L_GTCR_MD, 0)
> >
> > @@ -77,9 +89,14 @@
> >  #define RZG2L_MAX_SCALE_FACTOR	1024
> >  #define RZG2L_MAX_TICKS		((u64)U32_MAX * RZG2L_MAX_SCALE_FACTOR)
> >
> > +struct rzg2l_gpt_info {
> > +	u32 gtcr_tpcs_mask;
> 
> For consistency I would have called this only gtcr_tpcs without _mask.
> But here I'm not entirely sure if this will be confused by the occasional reader with the actual
> value. What's your thought here?

Agreed. Will use gtcr_tpcs.

> 
> > +};
> > +
> >  struct rzg2l_gpt_chip {
> >  	void __iomem *mmio;
> >  	struct mutex lock; /* lock to protect shared channel resources */
> > +	const struct rzg2l_gpt_info *info;
> >  	unsigned long rate_khz;
> >  	u32 period_ticks[RZG2L_MAX_HW_CHANNELS];
> >  	u32 channel_request_count[RZG2L_MAX_HW_CHANNELS];
> 
> Just these two very weak suggestions. Please consider these and tell me what you prefer. If you like
> to keep them as they are, that's fine for me.

I am Ok with your suggestion. Will fix it in next version.

Cheers,
Biju