linux-kernel - Re: [PATCH 4/6] regulator: lp872x: Add enable GPIO pin support

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Message-ID: <1450875165.2648.7.camel@collins>
Date:	Wed, 23 Dec 2015 13:52:45 +0100
From:	Paul Kocialkowski <contact@...lk.fr>
To:	Mark Brown <broonie@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Benoît Cousson <bcousson@...libre.com>,
	Tony Lindgren <tony@...mide.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Milo Kim <milo.kim@...com>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org
Subject: Re: [PATCH 4/6] regulator: lp872x: Add enable GPIO pin support

Le mercredi 23 décembre 2015 à 11:56 +0000, Mark Brown a écrit :
> On Wed, Dec 23, 2015 at 11:58:37AM +0100, Paul Kocialkowski wrote:
> 
> > +	gpio = lp->pdata->enable_gpio;
> > +	if (!gpio_is_valid(gpio))
> > +		return 0;
> > +
> > +	/* Always set enable GPIO high. */
> > +	ret = devm_gpio_request_one(lp->dev, gpio, GPIOF_OUT_INIT_HIGH, "LP872X EN");
> > +	if (ret) {
> > +		dev_err(lp->dev, "gpio request err: %d\n", ret);
> > +		return ret;
> > +	}
> 
> This isn't really adding support for the enable GPIO as the changelog
> suggests, it's requesting but not managing the GPIO.  Since there is
> core support for manging enable GPIOs this seems especially silly,
> please tell the core about the GPIO and then it will work at runtime
> too.

You're right, I had clearly overlooked this, thanks for pointing it out.
Will send v2 using GPIO handling from core.

-- 
Paul Kocialkowski, Replicant developer

Replicant is a fully free Android distribution running on several
devices, a free software mobile operating system putting the emphasis on
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