linux-kernel - Re: [PATCH v2 10/16] iio: adc: ad7768-1: Move buffer allocation to a separate function

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Message-ID: <20250201153539.5617b5b8@jic23-huawei>
Date: Sat, 1 Feb 2025 15:35:39 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Jonathan Santos <Jonathan.Santos@...log.com>
Cc: <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
 <linux-kernel@...r.kernel.org>, Sergiu Cuciurean
 <sergiu.cuciurean@...log.com>, <lars@...afoo.de>,
 <Michael.Hennerich@...log.com>, <marcelo.schmitt@...log.com>,
 <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
 <jonath4nns@...il.com>, <marcelo.schmitt1@...il.com>
Subject: Re: [PATCH v2 10/16] iio: adc: ad7768-1: Move buffer allocation to
 a separate function

On Mon, 27 Jan 2025 12:13:19 -0300
Jonathan Santos <Jonathan.Santos@...log.com> wrote:

> From: Sergiu Cuciurean <sergiu.cuciurean@...log.com>
> 
> This change moves the buffer allocation in a separate function, making
> space for adding another type of iio buffer if needed.
> 
> Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@...log.com>
Jonathan, this one needs your sign off to reflect that you handled
the patch as part of it's path to upstream.  I can't apply
anything that is missing such SoB.


> ---
> v2 Changes:
> * Interrupt and completion moved out from ad7768_triggered_buffer_alloc(). 
> ---
>  drivers/iio/adc/ad7768-1.c | 44 ++++++++++++++++++++++----------------
>  1 file changed, 26 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c
> index 5e2093be9b92..8487b9a06609 100644
> --- a/drivers/iio/adc/ad7768-1.c
> +++ b/drivers/iio/adc/ad7768-1.c
> @@ -599,6 +599,31 @@ static const struct regmap_config ad7768_regmap_config = {
>  	.max_register = AD7768_REG_MCLK_COUNTER,
>  };
>  
> +static int ad7768_triggered_buffer_alloc(struct iio_dev *indio_dev)
> +{
> +	struct ad7768_state *st = iio_priv(indio_dev);
> +	int ret;
> +
> +	st->trig = devm_iio_trigger_alloc(indio_dev->dev.parent, "%s-dev%d",
> +					  indio_dev->name,
> +					  iio_device_id(indio_dev));
> +	if (!st->trig)
> +		return -ENOMEM;
> +
> +	st->trig->ops = &ad7768_trigger_ops;
> +	iio_trigger_set_drvdata(st->trig, indio_dev);
> +	ret = devm_iio_trigger_register(indio_dev->dev.parent, st->trig);
> +	if (ret)
> +		return ret;
> +
> +	indio_dev->trig = iio_trigger_get(st->trig);
> +
> +	return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev,
> +					       &iio_pollfunc_store_time,
> +					       &ad7768_trigger_handler,
> +					       &ad7768_buffer_ops);
> +}
> +
>  static int ad7768_probe(struct spi_device *spi)
>  {
>  	struct ad7768_state *st;
> @@ -669,20 +694,6 @@ static int ad7768_probe(struct spi_device *spi)
>  		return ret;
>  	}
>  
> -	st->trig = devm_iio_trigger_alloc(&spi->dev, "%s-dev%d",
> -					  indio_dev->name,
> -					  iio_device_id(indio_dev));
> -	if (!st->trig)
> -		return -ENOMEM;
> -
> -	st->trig->ops = &ad7768_trigger_ops;
> -	iio_trigger_set_drvdata(st->trig, indio_dev);
> -	ret = devm_iio_trigger_register(&spi->dev, st->trig);
> -	if (ret)
> -		return ret;
> -
> -	indio_dev->trig = iio_trigger_get(st->trig);
> -
>  	init_completion(&st->completion);
>  
>  	ret = ad7768_set_channel_label(indio_dev, ARRAY_SIZE(ad7768_channels));
> @@ -696,10 +707,7 @@ static int ad7768_probe(struct spi_device *spi)
>  	if (ret)
>  		return ret;
>  
> -	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,
> -					      &iio_pollfunc_store_time,
> -					      &ad7768_trigger_handler,
> -					      &ad7768_buffer_ops);
> +	ret = ad7768_triggered_buffer_alloc(indio_dev);
>  	if (ret)
>  		return ret;
>