Hello,
On Tue, 16 Apr 2024 13:25:04 +0100, Lee Jones wrote:
> > Hello,
> >
> > On Wed, 14 Feb 2024 10:10:17 -0800, Lee Jones wrote:
> > > On Mon, 08 Apr 2024, Bhargav Raviprakash wrote:
> > >
> > > > Introduces a new struct tps6594_match_data. This struct holds fields for
> > > > chip id and regmap config. Using this struct in of_device_id data field.
> > > > This helps in adding support for TPS65224 PMIC.
> > > >
> > > > Signed-off-by: Bhargav Raviprakash <bhargav.r@xxxxxxxx>
> > > > Acked-by: Julien Panis <jpanis@xxxxxxxxxxxx>
> > > > ---
> > > > drivers/mfd/tps6594-i2c.c | 24 ++++++++++++++++--------
> > > > drivers/mfd/tps6594-spi.c | 24 ++++++++++++++++--------
> > > > include/linux/mfd/tps6594.h | 11 +++++++++++
> > > > 3 files changed, 43 insertions(+), 16 deletions(-)
> > > >
> > > > diff --git a/drivers/mfd/tps6594-i2c.c b/drivers/mfd/tps6594-i2c.c
> > > > index c125b474b..9e2ed48b7 100644
> > > > --- a/drivers/mfd/tps6594-i2c.c
> > > > +++ b/drivers/mfd/tps6594-i2c.c
> > > > @@ -192,10 +192,16 @@ static const struct regmap_config tps6594_i2c_regmap_config = {
> > > > .write = tps6594_i2c_write,
> > > > };
> > > >
> > > > +static const struct tps6594_match_data match_data[] = {
> > > > + [TPS6594] = {TPS6594, &tps6594_i2c_regmap_config},
> > > > + [TPS6593] = {TPS6593, &tps6594_i2c_regmap_config},
> > > > + [LP8764] = {LP8764, &tps6594_i2c_regmap_config},
> > >
> > > Nit: There should be spaces after the '{' and before the '}'.
> > >
> >
> > Sure! will fix it in the next version.
> >
> > > > +};
> > > > +
> > > > static const struct of_device_id tps6594_i2c_of_match_table[] = {
> > > > - { .compatible = "ti,tps6594-q1", .data = (void *)TPS6594, },
> > > > - { .compatible = "ti,tps6593-q1", .data = (void *)TPS6593, },
> > > > - { .compatible = "ti,lp8764-q1", .data = (void *)LP8764, },
> > > > + { .compatible = "ti,tps6594-q1", .data = &match_data[TPS6594], },
> > > > + { .compatible = "ti,tps6593-q1", .data = &match_data[TPS6593], },
> > > > + { .compatible = "ti,lp8764-q1", .data = &match_data[LP8764], },
> > >
> > > Not keen on this. Why do you pass the regmap data through here and
> > > leave everything else to be matched on device ID? It would be better to
> > > keep passing the device ID through and match everything off of that.
> > >
> > >
> > > --
> > > Lee Jones [李琼斯]
> >
> > Thanks for the feedback!
> >
> > These changes were made because of the following message:
> > https://lore.kernel.org/all/7hcysy6ho6.fsf@xxxxxxxxxxxx/
> >
> > Please let us know which one to follow.
>
> Right, except this doesn't eliminate "any \"if (chip_id)\" checking".
> Instead you have a hodge-podge of passing a little bit of (Regmap) data
> via match and the rest via "if (chip_id)". So either pass all platform
> type data via .data or just the chip ID. My suggestion 99% of the time
> is the latter.
Got it. Thanks! Will revert back to .data having chip_id.
Regards,
Bhargav
