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

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Date:   Sun, 08 Aug 2021 09:51:50 -0700
From:   Joe Perches <joe@...ches.com>
To:     Liam Beguin <liambeguin@...il.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 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)

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

> +/* 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)
>