linux-kernel - Re: [PATCH v3 2/3] iio: adc: Support ROHM BD79112 ADC/GPIO

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Message-ID: <CAHp75VeaHFDDZDmc9xsbUxZbRgkipRtcSdXN=ZXL2+V2OvL=Mw@mail.gmail.com>
Date: Sun, 7 Sep 2025 23:55:35 +0300
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Jonathan Cameron <jic23@...nel.org>
Cc: Matti Vaittinen <mazziesaccount@...il.com>, 
	Matti Vaittinen <matti.vaittinen@...rohmeurope.com>, David Lechner <dlechner@...libre.com>, 
	Nuno Sá <nuno.sa@...log.com>, 
	Andy Shevchenko <andy@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Linus Walleij <linus.walleij@...aro.org>, Bartosz Golaszewski <brgl@...ev.pl>, 
	Marcelo Schmitt <marcelo.schmitt@...log.com>, 
	Javier Carrasco <javier.carrasco.cruz@...il.com>, 
	Tobias Sperling <tobias.sperling@...ting.com>, Antoniu Miclaus <antoniu.miclaus@...log.com>, 
	Trevor Gamblin <tgamblin@...libre.com>, Esteban Blanc <eblanc@...libre.com>, 
	Ramona Alexandra Nechita <ramona.nechita@...log.com>, Hans de Goede <hansg@...nel.org>, 
	Herve Codina <herve.codina@...tlin.com>, Alisa-Dariana Roman <alisadariana@...il.com>, 
	linux-iio@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org
Subject: Re: [PATCH v3 2/3] iio: adc: Support ROHM BD79112 ADC/GPIO

On Sun, Sep 7, 2025 at 2:42 PM Jonathan Cameron <jic23@...nel.org> wrote:
> On Fri, 5 Sep 2025 09:42:31 +0300
> Matti Vaittinen <mazziesaccount@...il.com> wrote:

...

> > +/* ADC channels as named in the data-sheet */
> > +static const char * const bd79112_chan_names[] = {
> > +     "AGIO0A", "AGIO1A", "AGIO2A", "AGIO3A", "AGIO4A",       /* 0 - 4 */
> > +     "AGIO5A", "AGIO6A", "AGIO7A", "AGIO8A", "AGIO9A",       /* 5 - 9 */
> > +     "AGIO10A", "AGIO11A", "AGIO12A", "AGIO13A", "AGIO14A",  /* 10 - 14 */
> > +     "AGIO15A", "AGIO0B", "AGIO1B", "AGIO2B", "AGIO3B",      /* 15 - 19 */
> > +     "AGIO4B", "AGIO5B", "AGIO6B", "AGIO7B", "AGIO8B",       /* 20 - 24 */
> > +     "AGIO9B", "AGIO10B", "AGIO11B", "AGIO12B", "AGIO13B",   /* 25 - 29 */
> > +     "AGIO14B", "AGIO15B",                                   /* 30 - 31 */
> > +};
>
> > +     /* Let's assign data-sheet names to channels */
> Not seeing any value in this comment given the code that follows.
> Probably drop it

It was my suggestion. I don't know if you noticed that the amount of
the values is *not* power-of-two and it's harder to find a needed
value in the list. Moreover, you can read the discussion back and find
that actually it was a mistake in the list, which can be avoided (or
chances of which will be minimized) in the first place if we see the
comments.

-- 
With Best Regards,
Andy Shevchenko