linux-kernel - Re: [PATCH v6 4/6] mfd: tps65219: Add driver for TI TPS65219 PMIC

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Message-ID: <Y2UaCq+EL0f2mJ3p@google.com>
Date:   Fri, 4 Nov 2022 13:56:26 +0000
From:   Lee Jones <lee@...nel.org>
To:     jerome Neanne <jneanne@...libre.com>
Cc:     lgirdwood@...il.com, broonie@...nel.org, robh+dt@...nel.org,
        nm@...com, kristo@...nel.org, dmitry.torokhov@...il.com,
        krzysztof.kozlowski+dt@...aro.org, catalin.marinas@....com,
        will@...nel.org, tony@...mide.com, vigneshr@...com,
        bjorn.andersson@...aro.org, shawnguo@...nel.org,
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        biju.das.jz@...renesas.com, arnd@...db.de, jeff@...undy.com,
        afd@...com, khilman@...libre.com, narmstrong@...libre.com,
        msp@...libre.com, j-keerthy@...com, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-input@...r.kernel.org, linux-omap@...r.kernel.org
Subject: Re: [PATCH v6 4/6] mfd: tps65219: Add driver for TI TPS65219 PMIC

On Fri, 04 Nov 2022, jerome Neanne wrote:

> 
> 
> On 31/10/2022 12:00, Lee Jones wrote:
> > > diff --git a/include/linux/mfd/tps65219.h b/include/linux/mfd/tps65219.h
> > > new file mode 100644
> > > index 000000000000..2c1cf92e92ac
> > > --- /dev/null
> > > +++ b/include/linux/mfd/tps65219.h
> 
> > > +/**
> > > + * struct tps65219 - tps65219 sub-driver chip access routines
> > > + *
> > > + * Device data may be used to access the TPS65219 chip
> > > + *
> > > + * @dev MFD device
> > > + * @regmap Regmap for accessing the device registers
> > > + * @irq_data Regmap irq data used for the irq chip
> > > + * @nb notifier block for the restart handler
> > > + */
> > 
> > This header needs work.
> I'm not sure to get your point here. Just something like below to match
> format or do you expect more:
> 
> /**
>  * struct tps65219 - tps65219 sub-driver chip access routines
>  *
>  * Device data may be used to access the TPS65219 chip
>  *
>  * @dev: MFD device
>  * @regmap: Regmap for accessing the device registers
>  * @irq_data: Regmap irq data used for the irq chip
>  * @nb: notifier block for the restart handler
>  */
> 
> > 
> > Can you try an compile with W=1 please.
> This raise one warning on mfd:

Is that before or after the header was fixed-up?

> drivers/mfd/tps65219.c:28:12: warning: ‘tps65219_soft_shutdown’ defined but
> not used [-Wunused-function]
>    28 | static int tps65219_soft_shutdown(struct tps65219 *tps)
>       |            ^~~~~~~~~~~~~~~~~~~~~~
> soft_shutdown has been validated and is used in TI baseline even if not
> hooked in upstream version further to this review:
> https://lore.kernel.org/lkml/20220825150224.826258-5-msp@baylibre.com/

Will tps65219_soft_shutdown() be used?

I think it should be removed until it's utilised in Mainline.

> It was a TI requirement to implement it...
> Let me know if you want me to remove this function or if we can keep it like
> this.
> 

-- 
Lee Jones [李琼斯]