linux-kernel - Re: [PATCH v2 2/2] iio: adc: ad7173: add AD7173 driver

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Message-ID: <c52afe87-eaa0-eb7f-090f-b22aec95e49d@gmail.com>
Date:   Tue, 3 Oct 2023 13:33:36 +0300
From:   Ceclan Dumitru-Ioan <mitrutzceclan@...il.com>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     linus.walleij@...aro.org, brgl@...ev.pl, andy@...nel.org,
        linux-gpio@...r.kernel.org, Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Michael Walle <michael@...le.cc>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Arnd Bergmann <arnd@...db.de>,
        ChiaEn Wu <chiaen_wu@...htek.com>,
        Niklas Schnelle <schnelle@...ux.ibm.com>,
        Leonard Göhrs <l.goehrs@...gutronix.de>,
        Mike Looijmans <mike.looijmans@...ic.nl>,
        Haibo Chen <haibo.chen@....com>,
        Hugo Villeneuve <hvilleneuve@...onoff.com>,
        Ceclan Dumitru <dumitru.ceclan@...log.com>,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] iio: adc: ad7173: add AD7173 driver

On 9/30/23 17:05, Jonathan Cameron wrote:
> On Thu, 28 Sep 2023 15:54:43 +0300
> Dumitru Ceclan <mitrutzceclan@...il.com> wrote>> +config AD7173
>> +	tristate "Analog Devices AD7173 driver"
>> +	depends on SPI_MASTER
>> +	select AD_SIGMA_DELTA
>> +	select GPIO_REGMAP
> If you are selecting it, why does it have if guards in the driver.
> I prefer the select here, so drop this if guards.


>From what i checked, selecting GPIO_REGMAP does not select GPIOLIB but only REGMAP.

Also, in the thread from V1 Arnd Bergmann suggested:
	" I think the best way to handle these is to remove both
	 the 'select' and the #ifdef in the driver and instead use
	 'if (IS_ENABLED(CONFIG_GPIOLIB))' to handle optional gpio
	 providers in the code. "