linux-kernel - Re: [PATCH v6 7/9] iio: pressure: bmp280: Add support for BMP380 sensor family

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Message-ID: <2d7334210b41b256f6d7dc2cfd34036375ebf755.camel@gmail.com>
Date:   Sun, 18 Sep 2022 12:06:45 +0200
From:   Angel Iglesias <ang.iglesiasg@...il.com>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     linux-iio <linux-iio@...r.kernel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Nikita Yushchenko <nikita.yoush@...entembedded.com>,
        Paul Cercueil <paul@...pouillou.net>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 7/9] iio: pressure: bmp280: Add support for BMP380
 sensor family

On Sat, 2022-09-17 at 14:25 +0100, Jonathan Cameron wrote:
> On Tue, 13 Sep 2022 01:52:13 +0200
> Angel Iglesias <ang.iglesiasg@...il.com> wrote:
> 
> > Adds compatibility with the new generation of this sensor, the BMP380.
> > 
> > Includes basic sensor initialization to do pressure and temp
> > measurements and allows tuning oversampling settings for each channel.
> > 
> > The compensation algorithms are adapted from the device datasheet and
> > the repository https://github.com/BoschSensortec/BMP3-Sensor-API.
> > 
> > Signed-off-by: Angel Iglesias <ang.iglesiasg@...il.com>
> There is one place (around the reset handing) in here where I
> suspect we'll end up revisiting it because the matching by
> device ID is not particularly extensible to new devices.

Yeah, after the first time you raised that concern I've been thinking that maybe
it would be better to add a new "init" or "preinit" callback executing first
boot tasks for a sensor, such as this reset. Please, let me know how I can help
with this matter. On the other hand, I'll have the BMP390 and BMP581 on my hands
in a week or two. The BMP390 is almost the same regmap and operations as the
BMP380, so I think it will be an easy addition. The BMP581 is a new beast that
brings in lots of changes, but still has a good bunch of similarities.

> Anyhow, can handle that at the time.
> 
> I had to hand apply parts of this because of the clash Andy
> raised.  As a general rule it's better to keep one linear
> flow of patches unless they are on well separate parts of
> a driver.  Saves me effort :)  Here it was just one line to
> cut and paste, but you still get to now check I didn't mess
> that up ;)

Sorry about that. Thanks to you and Andy for the extra patience with my messy
patches.

> Applied - please check result in testing branch of iio.git.
> 
> Note I plan to rebase that branch after the first pull request
> is accepted as I have some dependencies blocking other
> patches and a fast forward rebase is the easiest way to deal
> with those cleanly.
> 
> Jonathan

With kind regards,
Angel