linux-kernel - Re: [PATCH] regulator: Add S5M8767 regulator driver

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Date:	Sun, 23 Oct 2011 10:30:20 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Sangbeom Kim <sbkim73@...sung.com>
Cc:	'Liam Girdwood' <lrg@...com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] regulator: Add S5M8767 regulator driver

On Sun, Oct 23, 2011 at 05:12:27PM +0900, Sangbeom Kim wrote:

This mostly looks good, a few smaller comments below but nothing major.

> +static int s5m8767_reg_enable_suspend(struct regulator_dev *rdev)
> +{
> +	return 0;
> +}

> +static int s5m8767_reg_disable_suspend(struct regulator_dev *rdev)
> +{

I guess you need an implementation for enable_suspend() (otherwise you
can't do disable->enable).

> +	{
> +		.name	= "AP 32KHz",
> +		.id	= S5M8767_32KHZAP_EN,
> +		.ops	= &s5m8767_others_ops,
> +		.type	= REGULATOR_VOLTAGE,
> +		.owner	= THIS_MODULE,
> +	}, {
> +		.name	= "CP 32KHz",
> +		.id	= S5M8767_32KHZAP_EN,
> +		.ops	= &s5m8767_others_ops,
> +		.type	= REGULATOR_VOLTAGE,
> +		.owner	= THIS_MODULE,
> +	},

Do these actually share anything with the other regulators?  If not then
I guess it's better to do with the struct clk framework.

> +	if (!pdata) {
> +		dev_err(pdev->dev.parent, "Platform data not supplied\n");
> +		return -ENODEV;
> +	}

It should be possible to register without platform data now (giving
readback only support).  Older versions of the regulator API required
constraints.

> +				dev_warn(&pdev->dev, "Duplicated gpio
> request"
> +						" for SET3\n");

Please keep the strings on one line (it makes grepping for errors
easier).
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