On Tue, Feb 04, 2014 at 02:47:31PM +0000, Lee Jones wrote:
> Hold your horses. :)
Holding :)
> > > > Add a driver for the BCM59056 PMU multi-function device. The driver
> > > > initially supports regmap initialization and instantiation of the
> > > > voltage regulator device function of the PMU.
> > > >
> > > > Signed-off-by: Matt Porter <mporter@xxxxxxxxxx>
> > > > Reviewed-by: Tim Kryger <tim.kryger@xxxxxxxxxx>
> > > > Reviewed-by: Markus Mayer <markus.mayer@xxxxxxxxxx>
> > > > ---
> > > > drivers/mfd/Kconfig | 8 +++
> > > > drivers/mfd/Makefile | 1 +
> > > > drivers/mfd/bcm59056.c | 119 +++++++++++++++++++++++++++++++++++++++++++
> > > > include/linux/mfd/bcm59056.h | 35 +++++++++++++
> > > > 4 files changed, 163 insertions(+)
> > > > create mode 100644 drivers/mfd/bcm59056.c
> > > > create mode 100644 include/linux/mfd/bcm59056.h
>
> <snip>
>
> > > I thought this was a DT only driver? If so, you probably want to use
> > > of_match_device() instead.
> >
> > Correct, I'll use of_match_device()
>
> If you're going to use this ...
>
> <snip>
>
> > > You've gone to the trouble of setting a device version here, but you
> > > don't seem to use it?
> >
> > I'll drop the device version
>
> ... then you'll still need this.
Yes, I was far too vague..I'm going to stop explicitly populating the
data field.
static const struct of_device_id bcm59056_of_match[] = {
{ .compatible = "brcm,bcm59056"},
{ }
};
> > > > +static const struct i2c_device_id bcm59056_i2c_id[] = {
> > > > + { "bcm59056", BCM59056 },
> > > > + { }
> > > > +};
> > >
> > > Ah, I guess this is where id->driver comes from.
> > >
> > > It's pretty silly that the I2C subsystem demands the presence of this
> > > table, despite not using it if an of_device_id table is present.
> >
> > It does make it very difficult to follow DT enabled I2C client drivers
> > :( I'll drop the BCM59056 too.
>
> And I don't think you can drop this, as the I2C subsystem still
> insists on it.
Agreed. I'm just dropping explicit population of the driver_data field
here.
static const struct i2c_device_id bcm59056_i2c_id[] = {
{ "bcm59056" },
{ }
};
>
> > > > +/* chip id */
> > > > +#define BCM59056 0
> > >
> > > Lonely, oh so lonely!
> >
> > Understood. Will remove.
>
> I think you need to keep this to supply the silly I2C ID table.
>
> I would just omit the '.data = (void *) VERSION' from the
> of_match_table until you require it.
Well, it's not even necessary for I2C ID table. the I2C subsystem is
happy with just a matching entry on the i2c_device_id name field and
NULL driver_data. palmas is implemented in this manner.
-Matt
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