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Date:   Wed, 13 Jun 2018 17:01:29 +0100
From:   Craig Tatlor <ctatlor97@gmail.com>
To:     Linus Walleij <linus.walleij@linaro.org>
Cc:     linux-arm-msm@vger.kernel.org, Sebastian Reichel <sre@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
        "David S. Miller" <davem@davemloft.net>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Randy Dunlap <rdunlap@infradead.org>,
        Linux PM list <linux-pm@vger.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v5 1/4] fixp-arith: add a linear interpolation function
Message-ID: <20180613160129.GC10090@arch>
References: <20180407135934.26122-1-ctatlor97@gmail.com>
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 <CACRpkdaKMr0qm91Q4LyjBGyKG_H4vvMr7bnRJeai+f2Eg-9r0Q@mail.gmail.com>
 <CACRpkdb-GeOUSPQeJoMe-My-ZugdPWn0DDVQST5e7XFzt1TmHw@mail.gmail.com>
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On Wed, Jun 13, 2018 at 01:12:45PM +0200, Linus Walleij wrote:
> On Wed, Jun 13, 2018 at 1:06 PM, Linus Walleij <linus.walleij@linaro.org> wrote:
> > On Thu, Jun 7, 2018 at 8:12 PM, Craig Tatlor <ctatlor97@gmail.com> wrote:
> >
> >> Adds a function to interpolate against two points,
> >> this is carried arount as a helper function by tons of drivers.
> >>
> >> Signed-off-by: Craig Tatlor <ctatlor97@gmail.com>
> >
> > The linear formula seems to fit the most natural form of linear
> > interpolation.
> >
> > I bet some John Carmack algorithm type people will soon
> > start to optimize this... :D
> 
> For your entertainment here is some sunday reading:
> https://fgiesen.wordpress.com/2012/08/15/linear-interpolation-past-present-and-future/
> 
> Yours,
> Linus Walleij

Thanks, interesting read.