linux-kernel - Re: [PATCH 2/8] regmap: Add I2C bus support

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Message-ID: <20110620234140.GB1905@opensource.wolfsonmicro.com>
Date:	Tue, 21 Jun 2011 00:41:40 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Lars-Peter Clausen <lars@...afoo.de>
Cc:	linux-kernel@...r.kernel.org,
	Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>,
	Samuel Oritz <sameo@...ux.intel.com>,
	Graeme Gregory <gg@...mlogic.co.uk>
Subject: Re: [PATCH 2/8] regmap: Add I2C bus support

On Tue, Jun 21, 2011 at 01:22:55AM +0200, Lars-Peter Clausen wrote:
> On 06/20/2011 02:54 PM, Mark Brown wrote:
> > [...]
> > +
> > +#include <linux/regmap.h>
> > +#include <linux/i2c.h>

> #include <linux/init.h>

For...?

> > +static int regmap_i2c_read(struct device *dev,
> > +			   const void *reg, size_t reg_size,
> > +			   void *val, size_t val_size)
> > +{
> > +	struct i2c_client *i2c = to_i2c_client(dev);
> > +	struct i2c_msg xfer[2];
> > +	int ret;

> > +	if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_PROTOCOL_MANGLING))
> > +		return -ENOTSUPP;

> You shouldn't need I2C_FUNC_PROTOCOL_MANGLING for reading.

Hrm, yeah, probably not.
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