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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Wed, 13 Jul 2022 14:07:15 +0200
Message-ID: <CAHp75VevDwdAKLYEWJgnMDvzuPuFibLuVqH-GKazEOT76wM6_A@mail.gmail.com>
Subject: Re: [PATCH v4 13/13] video: backlight: mt6370: Add Mediatek MT6370 support
To:     ChiaEn Wu <peterwu.pub@gmail.com>
Cc:     Lee Jones <lee.jones@linaro.org>,
        Daniel Thompson <daniel.thompson@linaro.org>,
        Jingoo Han <jingoohan1@gmail.com>, Pavel Machek <pavel@ucw.cz>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Sebastian Reichel <sre@kernel.org>,
        Chunfeng Yun <chunfeng.yun@mediatek.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jonathan Cameron <jic23@kernel.org>,
        Lars-Peter Clausen <lars@metafoo.de>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Guenter Roeck <linux@roeck-us.net>,
        "Krogerus, Heikki" <heikki.krogerus@linux.intel.com>,
        Helge Deller <deller@gmx.de>,
        ChiaEn Wu <chiaen_wu@richtek.com>,
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On Wed, Jul 13, 2022 at 12:53 PM ChiaEn Wu <peterwu.pub@gmail.com> wrote:
> Andy Shevchenko <andy.shevchenko@gmail.com> =E6=96=BC 2022=E5=B9=B47=E6=
=9C=885=E6=97=A5 =E9=80=B1=E4=BA=8C =E6=B8=85=E6=99=A85:14=E5=AF=AB=E9=81=
=93=EF=BC=9A
> > On Mon, Jul 4, 2022 at 7:43 AM ChiaEn Wu <peterwu.pub@gmail.com> wrote:

Please, remove unneeded context when replying!

...

> > > +               brightness_val[0] =3D (brightness - 1) & MT6370_BL_DI=
M2_MASK;
> > > +               brightness_val[1] =3D (brightness - 1)
> > > +                                   >> fls(MT6370_BL_DIM2_MASK);
> >
> > Bad indentation. One line?
>
> Well... if indent to one line, it will be over 80 characters(or called co=
lumns?)
> From my understanding, it is not allowed, right??

It's allowed to some extent.Use your common sense.
Here it's obviously broken indentation.

...

> > > +               prop_val =3D (ilog2(roundup_pow_of_two(prop_val)) + 1=
) >> 1;
> >
> > Isn't something closer to get_order() or fls()?
>
> I will revise it to "(get_order(prop_va * PAGE_SIZE) + 1) / 2" and
> this change is meet your expectations??

Nope. Try again. What about fls()?

...

> > > +       props->max_brightness =3D min_t(u32, brightness,
> > > +                                     MT6370_BL_MAX_BRIGHTNESS);
> >
> > One line?
>
>  Ditto, it will be over 80 characters...

As per above.

--=20
With Best Regards,
Andy Shevchenko