linux-kernel - Re: [PATCH v2 2/2] regulator: Add support for MAX77686.

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Message-ID: <20120520100015.GC20652@opensource.wolfsonmicro.com>
Date:	Sun, 20 May 2012 11:00:15 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Yadwinder Singh Brar <yadi.brar01@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, Liam Girdwood <lrg@...com>,
	Yadwinder Singh Brar <yadi.brar@...sung.com>
Subject: Re: [PATCH v2 2/2] regulator: Add support for MAX77686.

On Thu, May 17, 2012 at 07:09:27PM +0530, Yadwinder Singh Brar wrote:

Looks mostly good.  A couple of fairly small things:

> +static int max77686_get_voltage_sel(struct regulator_dev *rdev)
> +{

This looks like it should be regulator_get_voltage_sel_regmap().

> +static int max77686_set_voltage_sel(struct regulator_dev *rdev,
> +					unsigned sel)
> +{

This looks like it should be regulator_set_voltage_sel_regmap().

> +	max77686->ramp_delay = pdata->ramp_delay - 1;
> +	max77686_update_reg(i2c, MAX77686_REG_BUCK2CTRL1,
> +		RAMP_VALUE, RAMP_MASK);
> +	max77686_update_reg(i2c, MAX77686_REG_BUCK3CTRL1,
> +		RAMP_VALUE, RAMP_MASK);
> +	max77686_update_reg(i2c, MAX77686_REG_BUCK4CTRL1,
> +		RAMP_VALUE, RAMP_MASK);

This code is unclear because RAMP_VALUE looks like a constant that has
nothing to do with ramp_delay when in fact it's actually this:

> +#define RAMP_VALUE (max77686->ramp_delay << 6)

which isn't constant - this is why I queried this last time.  Just
remove the define and write this out directly.  The way the code is
written at the minute it looks like ramp_delay is just stored and not
referred to unless you go searching around the rest of the driver.

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