linux-kernel - Re: [PATCH v1 0/2] adding support for Microchip PAC193X Power Monitor

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Message-ID: <20230312164533.491a7402@jic23-huawei>
Date:   Sun, 12 Mar 2023 16:45:33 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     <Marius.Cristea@...rochip.com>
Cc:     <devicetree@...r.kernel.org>, <lars@...afoo.de>,
        <linux-iio@...r.kernel.org>, <robh+dt@...nel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 0/2] adding support for Microchip PAC193X Power
 Monitor

On Mon, 6 Mar 2023 14:03:52 +0000
<Marius.Cristea@...rochip.com> wrote:

> Hi Jonathan,
> 
>   Please, see my comments below...
> 
> 
> On Sat, 2023-02-25 at 17:11 +0000, Jonathan Cameron wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you
> > know the content is safe
> > 
> > On Mon, 20 Feb 2023 14:32:30 +0200
> > <marius.cristea@...rochip.com> wrote:
> >   
> > > From: Marius Cristea <marius.cristea@...rochip.com>
> > > 
> > > Adding support for Microchip PAC193X series of Power Monitor with
> > > Accumulator chip family.  
> > 
> > This device is at the messy boundary between IIO and HWMON. Perhaps
> > call out
> > the reasons you think IIO is more appropriate in this cover letter.
> > + Often a good idea for these borderline parts to cc both mailing
> > lists and
> > maintainers.
> > 
> > Often the conclusion is that it is fine to have these in IIO because
> > we can
> > bridge to hwmon anyway with the iio-hwmon driver.
> >   
> 
> Indeed the driver (the device) is at the boundary between IIO and
> HWMON. I was thinking to start with a simple driver (this one that is
> more apropiate to be a HWMON) and add more functionality later (like
> data buffering that is quite important for example if someone wants to
> profile power consumtion of the procesor itself, or a pheriperic, or a
> battery)
> 

OK. List out some of the things you want to do later as the reasoning
+CC hmwon maintainers just to be sure.  They are usually fine with this
sort of reasoning, but it is best to check anyway.

Thanks,

Jonathan


> 
> > > 
> > > Differences related to previous patch:
> > > 
> > > v1:
> > > - first version comitted to review
> > > 
> > > 
> > > Marius Cristea (2):
> > >   dt-bindings: iio: adc: adding dt-bindings for PAC193X
> > >   iio: adc: adding support for pac193x
> > > 
> > >  .../bindings/iio/adc/microchip,pac193x.yaml   |  122 +
> > >  MAINTAINERS                                   |    7 +
> > >  drivers/iio/adc/Kconfig                       |   12 +
> > >  drivers/iio/adc/Makefile                      |    1 +
> > >  drivers/iio/adc/pac193x.c                     | 2072
> > > +++++++++++++++++
> > >  5 files changed, 2214 insertions(+)
> > >  create mode 100644
> > > Documentation/devicetree/bindings/iio/adc/microchip,pac193x.yaml
> > >  create mode 100644 drivers/iio/adc/pac193x.c
> > >   
> >   
> 
> Thanks,
> Marius
>