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

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Message-ID: <1383fd22-c720-811e-a2bb-be2151675089@baylibre.com>
Date:   Fri, 4 Nov 2022 13:58:13 +0100
From:   jerome Neanne <jneanne@...libre.com>
To:     Lee Jones <lee@...nel.org>
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,
        geert+renesas@...der.be, dmitry.baryshkov@...aro.org,
        marcel.ziswiler@...adex.com, vkoul@...nel.org,
        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 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:
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/

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.