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Message-ID: <20140417223004.GL23695@beef>
Date: Thu, 17 Apr 2014 18:30:04 -0400
From: Matt Porter <mporter@...aro.org>
To: Lee Jones <lee.jones@...aro.org>
Cc: Devicetree List <devicetree@...r.kernel.org>,
Samuel Ortiz <sameo@...ux.intel.com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Tim Kryger <tim.kryger@...aro.org>,
Markus Mayer <markus.mayer@...aro.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Linux ARM Kernel List <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 2/4] mfd: bcm590xx: add support for second i2c slave
address space
On Wed, Apr 16, 2014 at 12:06:03PM +0100, Lee Jones wrote:
> On Mon, 14 Apr 2014, Matt Porter wrote:
>
> > BCM590xx utilizes a second i2c slave address to access additional
>
> s/i2c/I2C
>
> > register space. Add support for the second address space by
> > instantiated a dummy i2c device with the appropriate secondary
>
> s/instantiated/instantiating
>
> > i2c slave address. Expose a second regmap register space so that
>
> s/i2c/I2C
>
> Exposing?
>
> s/regmap/Regmap
>
> > mfd drivers can access this secondary i2c slave address space.
>
> s/mfd/MFD
>
> s/i2c/I2C
Ok, I'll fix the capitalization and wording..except for regmap as
noted by Mark.
>
> > Signed-off-by: Matt Porter <mporter@...aro.org>
> > ---
> > drivers/mfd/bcm590xx.c | 60 +++++++++++++++++++++++++++++++++-----------
> > include/linux/mfd/bcm590xx.h | 9 ++++---
> > 2 files changed, 52 insertions(+), 17 deletions(-)
> >
> > diff --git a/drivers/mfd/bcm590xx.c b/drivers/mfd/bcm590xx.c
> > index e9a33c7..b710ffa 100644
> > --- a/drivers/mfd/bcm590xx.c
> > +++ b/drivers/mfd/bcm590xx.c
> > @@ -28,39 +28,71 @@ static const struct mfd_cell bcm590xx_devs[] = {
> > },
> > };
> >
> > -static const struct regmap_config bcm590xx_regmap_config = {
> > +static const struct regmap_config bcm590xx_regmap_config_0 = {
>
> Not loving _0 and _1 appendages.
>
> Is one of them {primary|master} and the other {secondary|slave}?
I guess from a Linux I2C subsystem, we can view _1 as the
"secondary"...it does correspond the the i2c_new_dummy() device
that we create in the mfd probe. That device corresponds to the
ADDMAP=1 address on the PMU. This is why I used those appendages.
-Matt
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