linux-kernel - Re: [PATCH v3 2/2] iio: afe: unit-converter: new driver

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Date:   Wed, 18 Apr 2018 10:37:21 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Peter Rosin <peda@...ntia.se>
CC:     Jonathan Cameron <jic23@...nel.org>,
        <linux-kernel@...r.kernel.org>, Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        "Peter Meerwald-Stadler" <pmeerw@...erw.net>,
        Rob Herring <robh+dt@...nel.org>,
        "Mark Rutland" <mark.rutland@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        "Andrew F . Davis" <afd@...com>,
        Fabio Estevam <festevam@...il.com>,
        <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH v3 2/2] iio: afe: unit-converter: new driver

On Mon, 16 Apr 2018 09:12:45 +0200
Peter Rosin <peda@...ntia.se> wrote:

> On 2018-04-15 19:31, Jonathan Cameron wrote:
> > On Tue, 10 Apr 2018 17:28:02 +0200
> > Peter Rosin <peda@...ntia.se> wrote:
> >   
> >> If an ADC channel measures the midpoint of a voltage divider, the
> >> interesting voltage is often the voltage over the full resistance.
> >> E.g. if the full voltage is too big for the ADC to handle.
> >> Likewise, if an ADC channel measures the voltage across a shunt
> >> resistor, the interesting value is often the current through the
> >> resistor.
> >>
> >> This driver solves both problems by allowing to linearly scale a channel
> >> and by allowing changes to the type of the channel. Or both.
> >>
> >> Signed-off-by: Peter Rosin <peda@...ntia.se>  
> > So I 'think' the only outstanding question is Andrew's one about the driver
> > name.  We aren't in a hurry at this point in the kernel cycle, so lets
> > wait until that discussion has ended.  Assuming that we do possibly end
> > up with a change, then please roll all the patches up into a single series
> > to avoid me getting confusion.  
> 
> Yeah, sure, sorry for the split series, but the lt6106 that's present in
> one of our newer designs didn't occur to me until just seconds after
> firing the first half of the series. Which is kind of typical...
> 
> Anyway, about the driver naming. The suggestion I like best so far is
> linear-scaler from Linus W, but thinking about it some more I think I
> like iio-rescale even better.
> 
> Any objections to iio-rescale?

Works for me. But then I rarely care 'that much' about naming and am
responsible for plenty of previous confusing choices ;)

Jonathan

> 
> Cheers,
> Peter
> --
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