linux-kernel - Re: [PATCH v2 2/3] iio: pressure: bmp280: Use i2c_get_match

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Date:   Thu, 07 Sep 2023 09:09:09 +0200
From:   Angel Iglesias <ang.iglesiasg@...il.com>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     Biju Das <biju.das.jz@...renesas.com>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Subject: Re: [PATCH v2 2/3] iio: pressure: bmp280: Use i2c_get_match_data

On Mon, 2023-08-28 at 12:39 +0100, Jonathan Cameron wrote:
> On Mon, 14 Aug 2023 18:43:49 +0200
> Angel Iglesias <ang.iglesiasg@...il.com> wrote:
> 
> > On Mon, 2023-08-14 at 06:57 +0000, Biju Das wrote:
> > > Hi Angel Iglesias,
> > > 
> > >   
> > > > Subject: Re: [PATCH v2 2/3] iio: pressure: bmp280: Use
> > > > i2c_get_match_data
> > > > 
> > > > On Sun, 2023-08-13 at 21:03 +0200, Angel Iglesias wrote:  
> > > > > Replaces device_get_match_data() and fallback match_id logic by new
> > > > > unified helper function i2c_get_match_data().
> > > > > 
> > > > > Signed-off-by: Angel Iglesias <ang.iglesiasg@...il.com>
> > > > > 
> > > > > diff --git a/drivers/iio/pressure/bmp280-i2c.c
> > > > > b/drivers/iio/pressure/bmp280- i2c.c index 693eb1975fdc..34e3bc758493
> > > > > 100644
> > > > > --- a/drivers/iio/pressure/bmp280-i2c.c
> > > > > +++ b/drivers/iio/pressure/bmp280-i2c.c
> > > > > @@ -11,9 +11,7 @@ static int bmp280_i2c_probe(struct i2c_client
> > > > > *client)
> > > > >         const struct bmp280_chip_info *chip_info;
> > > > >         struct regmap *regmap;
> > > > > 
> > > > > -       chip_info = device_get_match_data(&client->dev);
> > > > > -       if (!chip_info)
> > > > > -               chip_info = (const struct bmp280_chip_info *)
> > > > > id->driver_data;
> > > > > +       chip_info = i2c_get_match_data(client);
> > > > > 
> > > > >         regmap = devm_regmap_init_i2c(client,
> > > > > chip_info->regmap_config);
> > > > >         if (IS_ERR(regmap)) {  
> > > > 
> > > > Hi,
> > > > 
> > > > I noticed I submitted this change that was also submitted by Biju Das on
> > > > another
> > > > patch:  
> > >   
> > > > Should I drop this patch from the series?  
> > > 
> > > I think it is ok. Andy is suggesting to use unified table for SPI/I2C
> > > 
> > > Is it something do able and testable in your environment? see [1],
> > > If yes, please create another patch for using unified table for both i2c
> > > and
> > > spi.  
> > 
> > I have around a BMP390 with the SPI pins available to test it out. In the
> > case
> > of the bmp280 we could unify the of_match table as they're almost the same.
> > In
> > the case of the spi_device_id and i2c_device_id tables, as they're different
> > structs I'm not sure if they can be unified.
> > 
> > Regarding Andy's comment, I think he's referring to the duplicated chip
> > infos.
> > In the case of the bmp280, the chip_infos are defined on the common driver
> > code
> > and used for both SPI and I2C match tables.
> Hi,
> 
> I'm loosing track of where we are with this driver as multiple people are
> working on it.
> 
> Angel, as most of the work is yours, please could you manage the flow of
> patches
> for this one so I get series with clear statement of what they are dependent
> on.

Sure. If Biju is okay with it, maybe I should squash toghether this two series
of mine:
https://patchwork.kernel.org/project/linux-iio/cover/cover.1691952005.git.ang.iglesiasg@gmail.com/
https://patchwork.kernel.org/project/linux-iio/cover/cover.1692805377.git.ang.iglesiasg@gmail.com/

And pull this patch from Biju:
https://patchwork.kernel.org/project/linux-iio/patch/20230812175808.236405-1-biju.das.jz@bp.renesas.com/

Sorry again from the noise introduced in the mail-list,

Kind regards,
Angel

> Thanks,
> 
> Jonathan
> 
> > 
> > > 
> > > https://lore.kernel.org/linux-renesas-soc/CAHp75VeX+T=hAN+PgtHTdv4b6UtDVgveUUww1b1kuOngzDinFw@mail.gmail.com/T/#t
> > > 
> > > Cheers,
> > > Biju  
> > 
> > Kind regards,
> > Angel
> > 
>