linux-kernel - Re: [PATCH v4 10/17] iio: adc: ad7768-1: Move buffer allocation to a separate function

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Message-ID: <Z8r6H40mTKO_QF9Y@debian-BULLSEYE-live-builder-AMD64>
Date: Fri, 7 Mar 2025 10:52:31 -0300
From: Marcelo Schmitt <marcelo.schmitt1@...il.com>
To: Jonathan Santos <Jonathan.Santos@...log.com>
Cc: linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
	Sergiu Cuciurean <sergiu.cuciurean@...log.com>, lars@...afoo.de,
	Michael.Hennerich@...log.com, marcelo.schmitt@...log.com,
	jic23@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, linus.walleij@...aro.org, brgl@...ev.pl,
	lgirdwood@...il.com, broonie@...nel.org, dlechner@...libre.com,
	jonath4nns@...il.com
Subject: Re: [PATCH v4 10/17] iio: adc: ad7768-1: Move buffer allocation to a
 separate function

On 03/06, Jonathan Santos 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.
> 
> Reviewed-by: David Lechner <dlechner@...libre.com>
> Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@...log.com>
> Signed-off-by: Jonathan Santos <Jonathan.Santos@...log.com>
> ---
LGTM

Reviewed-by: Marcelo Schmitt <marcelo.schmitt@...log.com>

> v4 Changes:
> * None.
> 
> v3 Changes:
> * Added missing 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 86f44d28c478..e88e9431bb7a 100644
> --- a/drivers/iio/adc/ad7768-1.c
> +++ b/drivers/iio/adc/ad7768-1.c
> @@ -619,6 +619,31 @@ static int ad7768_set_channel_label(struct iio_dev *indio_dev,
>  	return 0;
>  }
>  
> +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;
> @@ -689,20 +714,6 @@ 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));
> @@ -716,10 +727,7 @@ 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;
>  
> -- 
> 2.34.1
>