linux-kernel - Re: [PATCH 2/9] regulator: max77802: Add .{get,set}

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Message-ID: <20141016083653.GE724@sirena.org.uk>
Date:	Thu, 16 Oct 2014 10:36:53 +0200
From:	Mark Brown <broonie@...nel.org>
To:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Cc:	Doug Anderson <dianders@...omium.org>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Olof Johansson <olof@...om.net>,
	Chris Zhong <zyw@...k-chips.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Abhilash Kesavan <kesavan.abhilash@...il.com>,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH 2/9] regulator: max77802: Add .{get,set}_mode callbacks

On Wed, Oct 15, 2014 at 06:20:32PM +0200, Javier Martinez Canillas wrote:

> +#define MAX77802_MODE(pval) ((pval == MAX77802_OPMODE_NORMAL) ?	\
> +			     REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY)
> +

Make this a static inline function if there's any need for it, this is
both more legible and more helpful for the compiler.

> +	switch (mode) {
> +	case REGULATOR_MODE_IDLE:
> +	case REGULATOR_MODE_STANDBY:
> +		val = MAX77802_OPMODE_LP;	/* ON in Low Power Mode */
> +		break;

You should never have multiple modes mapping onto a singel value - if
the user sets a mode they should find that the device has that mode.

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