linux-kernel - Re: [PATCH v1 2/2] iio: adc: adding support for pac193x

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Message-ID: <20230225171954.06d396f3@jic23-huawei>
Date:   Sat, 25 Feb 2023 17:19:54 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     marius.cristea@...rochip.com, lars@...afoo.de, robh+dt@...nel.org,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 2/2] iio: adc: adding support for pac193x

On Tue, 21 Feb 2023 14:46:08 +0100
Krzysztof Kozlowski <krzk@...nel.org> wrote:

> On 20/02/2023 13:32, marius.cristea@...rochip.com wrote:
> > From: Marius Cristea <marius.cristea@...rochip.com>
> > 
> > This is the iio driver for Microchip
> > PAC193X series of Power Monitor with Accumulator chip family.
> > 
> > Signed-off-by: Marius Cristea <marius.cristea@...rochip.com>
> > ---
> >  MAINTAINERS               |    7 +
> >  drivers/iio/adc/Kconfig   |   12 +
> >  drivers/iio/adc/Makefile  |    1 +
> >  drivers/iio/adc/pac193x.c | 2072 +++++++++++++++++++++++++++++++++++++
> >  4 files changed, 2092 insertions(+)
> >  create mode 100644 drivers/iio/adc/pac193x.c
> >   
> 
> 
> Thank you for your patch. There is something to discuss/improve.
> 
> > +
> > +#define PAC193X_NEG_PWR_CH1_BIDI(x)	((x) ? BIT(7) : 0)
> > +#define PAC193X_NEG_PWR_CH2_BIDI(x)	((x) ? BIT(6) : 0)
> > +#define PAC193X_NEG_PWR_CH3_BIDI(x)	((x) ? BIT(5) : 0)
> > +#define PAC193X_NEG_PWR_CH4_BIDI(x)	((x) ? BIT(4) : 0)
> > +#define PAC193X_NEG_PWR_CH1_BIDV(x)	((x) ? BIT(3) : 0)
> > +#define PAC193X_NEG_PWR_CH2_BIDV(x)	((x) ? BIT(2) : 0)
> > +#define PAC193X_NEG_PWR_CH3_BIDV(x)	((x) ? BIT(1) : 0)
> > +#define PAC193X_NEG_PWR_CH4_BIDV(x)	((x) ? BIT(0) : 0)
> > +
> > +/*
> > + * Universal Unique Identifier (UUID),
> > + * 033771E0-1705-47B4-9535-D1BBE14D9A09, is
> > + * reserved to Microchip for the PAC193X and must not be changed
> > + */
> > +#define PAC193X_DSM_UUID		"033771E0-1705-47B4-9535-D1BBE14D9A09"
> > +
> > +enum pac193x_ids {
> > +	pac1934,
> > +	pac1933,
> > +	pac1932,
> > +	pac1931  
> 
> Enums are usually uppercase.

I'm not sure there is anything in coding standard around that and a grep finds
a mixture of the two when it comes to ones used for IDs.  Mind you uppercase
is fine :)


> 
> 
> 
> Best regards,
> Krzysztof
>