linux-kernel - Re: [RFC PATCH 2/3] power: (regmap:) Add linear

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Message-ID: <208a81c87e944c69d95da85d7fd0f3ea2bd61547.camel@fi.rohmeurope.com>
Date:   Tue, 18 Feb 2020 07:23:38 +0000
From:   "Vaittinen, Matti" <Matti.Vaittinen@...rohmeurope.com>
To:     "broonie@...nel.org" <broonie@...nel.org>
CC:     "mazziesaccount@...il.com" <mazziesaccount@...il.com>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Mutanen, Mikko" <Mikko.Mutanen@...rohmeurope.com>,
        "sre@...nel.org" <sre@...nel.org>,
        "Laine, Markus" <Markus.Laine@...rohmeurope.com>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [RFC PATCH 2/3] power: (regmap:) Add linear_range helper

Morning Mark,

On Fri, 2020-02-14 at 14:32 +0200, Matti Vaittinen wrote:
> On Fri, 2020-02-14 at 11:47 +0000, Mark Brown wrote:
> > On Wed, Feb 12, 2020 at 06:56:37AM +0000, Vaittinen, Matti wrote:
> > > On Tue, 2020-02-11 at 19:06 +0000, Mark Brown wrote:
> > > > 
> > 
> > It is a bit but I think that's solvable with some refactoring in
> > place
> > (eg, pushing things into a smaller struct embedded in the main
> > regulator
> > one and then moving them out).  I might look at it myself if nobody
> > else
> > gets to it first...
> 
> I need something like this in order to convert BD99954 current and
> voltage values to register values. I will happily use what-ever you
> do
> pull together - but if you don't feel like doing it now I might look
> at
> the regulator part while I am working with BD99954 anyways. Please
> just
> let me know if you want me to see if I can pull the range stuff out
> of
> regulator area.

Just to avoid duplicate work - I started working with this. Please let
me know if you are already working on it so I am not doing this in
vain.

By the way - do you have some nice test cases for regulators hidden
somewhere? If so, do you think you could share them? I sure have some
for BD718x7 but they are somewhat clumsy and require special HW. (I've
never liked unit-tests but I must admit there are some specific cases
where they would be pretty usable).

Best Regards,
	Matti Vaittinen