linux-kernel - Re: [PATCH v2 7/7] iio: adc: ad7091r-base: Add debugfs reg access

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20231125164404.64072ffb@jic23-huawei>
Date:   Sat, 25 Nov 2023 16:44:04 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Marcelo Schmitt <marcelo.schmitt@...log.com>
Cc:     <paul.cercueil@...log.com>, <Michael.Hennerich@...log.com>,
        <lars@...afoo.de>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <marcelo.schmitt1@...il.com>, <linux-iio@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 7/7] iio: adc: ad7091r-base: Add debugfs reg access

On Thu, 23 Nov 2023 13:43:06 -0300
Marcelo Schmitt <marcelo.schmitt@...log.com> wrote:

> Add direct register access support for AD7091R-2/-4/-5/-8 ADCs.
> 
> Signed-off-by: Marcelo Schmitt <marcelo.schmitt@...log.com>

regmap provides it's own version of this, so I'm not sure I'd bother adding
the IIO one. See regmap-debugfs.c


> ---
>  drivers/iio/adc/ad7091r-base.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/drivers/iio/adc/ad7091r-base.c b/drivers/iio/adc/ad7091r-base.c
> index dbc60ea1bafc..4d5051316428 100644
> --- a/drivers/iio/adc/ad7091r-base.c
> +++ b/drivers/iio/adc/ad7091r-base.c
> @@ -177,8 +177,20 @@ static int ad7091r_read_raw(struct iio_dev *iio_dev,
>  	return ret;
>  }
>  
> +static int ad7091r_reg_access(struct iio_dev *indio_dev, unsigned int reg,
> +			      unsigned int writeval, unsigned int *readval)
> +{
> +	struct ad7091r_state *st  = iio_priv(indio_dev);
> +
> +	if (readval)
> +		return regmap_read(st->map, reg, readval);
> +
> +	return regmap_write(st->map, reg, writeval);
> +}
> +
>  static const struct iio_info ad7091r_info = {
>  	.read_raw = ad7091r_read_raw,
> +	.debugfs_reg_access = &ad7091r_reg_access,
>  };
>  
>  static irqreturn_t ad7091r_event_handler(int irq, void *private)