On Thu, 24 Dec 2020, Yoshihiro Shimoda wrote:
> Hi Lee,
>
> > From: Lee Jones, Sent: Thursday, December 24, 2020 12:39 AM
> > On Wed, 23 Dec 2020, Yoshihiro Shimoda wrote:
> > > From: Khiem Nguyen <khiem.nguyen.xt@xxxxxxxxxxx>
> > >
> > > Since the driver supports BD9571MWV PMIC only, this patch makes
> > > the functions and data structure become more generic so that
> > > it can support other PMIC variants as well. Also remove printing
> > > part name which Lee Jones suggested.
> > >
> > > Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@xxxxxxxxxxx>
> > > Co-developed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> > > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> > > Reviewed-by: Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx>
> > > ---
> > > drivers/mfd/bd9571mwv.c | 89 +++++++++++++++++++++++++------------------
> > > include/linux/mfd/bd9571mwv.h | 18 +--------
> > > 2 files changed, 54 insertions(+), 53 deletions(-)
> >
> > Couple of small points.
> >
> > Remainder looks good.
>
> Thank you for your review!
>
> > > diff --git a/drivers/mfd/bd9571mwv.c b/drivers/mfd/bd9571mwv.c
> > > index 49e968e..c905ab4 100644
> > > --- a/drivers/mfd/bd9571mwv.c
> > > +++ b/drivers/mfd/bd9571mwv.c
> > > @@ -3,6 +3,7 @@
> > > * ROHM BD9571MWV-M MFD driver
> > > *
> > > * Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@xxxxxxxxx>
> > > + * Copyright (C) 2020 Renesas Electronics Corporation
> > > *
> > > * Based on the TPS65086 driver
> > > */
> > > @@ -14,6 +15,14 @@
> > >
> > > #include <linux/mfd/bd9571mwv.h>
> > >
> > > +/* Driver data to distinguish bd957x variants */
> > > +struct bd957x_ddata {
> > > + const struct regmap_config *regmap_config;
> > > + const struct regmap_irq_chip *irq_chip;
> >
> > > + const struct mfd_cell *cells;
> > > + int num_cells;
> >
> > Are you using these post-probe?
> >
> > If not, they're not ddata.
>
> I'm not using all these members post-probe.
> So, I'll remove ddata.
>
> <snip>
> > > static int bd9571mwv_probe(struct i2c_client *client,
> > > - const struct i2c_device_id *ids)
> > > + const struct i2c_device_id *ids)
> > > {
> > > - struct bd9571mwv *bd;
> > > - int ret;
> > > -
> > > - bd = devm_kzalloc(&client->dev, sizeof(*bd), GFP_KERNEL);
> > > - if (!bd)
> > > - return -ENOMEM;
> > > -
> > > - i2c_set_clientdata(client, bd);
> > > - bd->dev = &client->dev;
> > > - bd->irq = client->irq;
> > > + const struct bd957x_ddata *ddata;
> > > + struct device *dev = &client->dev;
> > > + struct regmap *regmap;
> > > + struct regmap_irq_chip_data *irq_data;
> > > + int ret, irq = client->irq;
> > > +
> > > + /* Read the PMIC product code */
> > > + ret = i2c_smbus_read_byte_data(client, BD9571MWV_PRODUCT_CODE);
> > > + if (ret < 0) {
> > > + dev_err(dev, "Failed to read product code\n");
> > > + return ret;
> > > + }
> >
> > Nit: '\n' here.
>
> I got it. I'll add a blank line here.
>
> > > + switch (ret) {
> > > + case BD9571MWV_PRODUCT_CODE_BD9571MWV:
> > > + ddata = &bd9571mwv_ddata;
> >
> > Simply declare 'const struct mfd_cell *cells' locally in probe and
> > assign it here instead.
>
> I got it. I'll also add "const struct regmap_config *regmap_config;"
> and "const struct regmap_irq_chip *irq_chip;" locally in probe.
If you only use them there, then yes, that's correct.
--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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