linux-kernel - Re: [PATCH 1/3] mfd: MAX6650/6651 support

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Message-ID: <20140110095648.GA28141@lee--X1>
Date:	Fri, 10 Jan 2014 09:56:48 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Laszlo Papp <lpapp@....org>
Cc:	Guenter Roeck <linux@...ck-us.net>,
	Linus Walleij <linus.walleij@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] mfd: MAX6650/6651 support

On Thu, 09 Jan 2014, Laszlo Papp wrote:

> >> +int max6651_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
> >> +{
> >
> > Probably best to use Regmap instead.
> >
> > regmap_i2c_read()
> 
> >> +int max6651_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
> >> +{
> >> +    struct max6651_dev *max6651 = i2c_get_clientdata(i2c);
> >> +    int ret;
> >
> > Same here.
> >
> > regmap_i2c_write()
> 
> Hmm, but what Linus linked is using regmap_read/write(...) instead of
> regmap_i2c_read/write(...).
> 
> I thought I would need to be using the former. Perhaps, I
> misunderstand something?
> 
> I do not even find the aforementioend functions used by drivers based
> on this LXR result:
> http://lxr.free-electrons.com/ident?i=regmap_i2c_write

Linus is in a better position to know, use his suggestion.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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