linux-kernel - Re: [PATCH v5 1/5] iio: adc: ad7949: define and use bitfield names

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Date:   Sun, 08 Aug 2021 18:46:54 -0400
From:   "Liam Beguin" <liambeguin@...il.com>
To:     "Joe Perches" <joe@...ches.com>, <lars@...afoo.de>,
        <Michael.Hennerich@...log.com>, <jic23@...nel.org>,
        <charles-antoine.couret@...ensium.com>, <Nuno.Sa@...log.com>
Cc:     <linux-kernel@...r.kernel.org>, <linux-iio@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <robh+dt@...nel.org>
Subject: Re: [PATCH v5 1/5] iio: adc: ad7949: define and use bitfield names

On Sun Aug 8, 2021 at 12:51 PM EDT, Joe Perches wrote:
> On Sat, 2021-08-07 at 21:56 -0400, Liam Beguin wrote:
> > Replace raw configuration register values by using FIELD_PREP and
> > defines to improve readability.
> []
> > diff --git a/drivers/iio/adc/ad7949.c b/drivers/iio/adc/ad7949.c
> []
> +#define AD7949_CFG_BIT_INCC GENMASK(12, 10)
>

Hi Joe,

> I think the naming is a bit confusing as it appears as if
> these bitfield ranges are single bits.

That makes sense.
Would AD7949_CFG_BITS_* be good enough?

Thanks,
Liam

>
> > +/* REF: reference/buffer selection */
> > +#define AD7949_CFG_BIT_REF		GENMASK(5, 3)
> []
> > +/* SEQ: channel sequencer. Allows for scanning channels */
> > +#define AD7949_CFG_BIT_SEQ		GENMASK(2, 1)
> >