linux-kernel - Re: [PATCH 3/5] iio: adc: ad4030: move setting mode to update_scan

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Message-ID: <822dec830a7e64dbb791a7e28b1c5fa182ccf993.camel@gmail.com>
Date: Tue, 11 Mar 2025 09:27:57 +0000
From: Nuno Sá <noname.nuno@...il.com>
To: David Lechner <dlechner@...libre.com>, Lars-Peter Clausen
 <lars@...afoo.de>,  Michael Hennerich <Michael.Hennerich@...log.com>, Nuno
 Sá <nuno.sa@...log.com>, Esteban Blanc	
 <eblanc@...libre.com>, Jonathan Cameron <jic23@...nel.org>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/5] iio: adc: ad4030: move setting mode to
 update_scan_mode

On Mon, 2025-03-10 at 15:43 -0500, David Lechner wrote:
> Move calling ad4030_set_mode() from the buffer preenable callback to
> the update_scan_mode callback. This doesn't change any functionality
> but is more logical since setting the mode is a function of the scan
> mask and doesn't require an "undo" operation when the buffer is
> disabled.
> 
> Signed-off-by: David Lechner <dlechner@...libre.com>
> ---

Reviewed-by: Nuno Sá <nuno.sa@...log.com>

>  drivers/iio/adc/ad4030.c | 13 +++++++------
>  1 file changed, 7 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/iio/adc/ad4030.c b/drivers/iio/adc/ad4030.c
> index
> f24b46164a477f9b6b5c93ffeba0a335f7b3de5a..c2117c7a296f22aeeec6911c8a8c74ed5762
> 96a0 100644
> --- a/drivers/iio/adc/ad4030.c
> +++ b/drivers/iio/adc/ad4030.c
> @@ -868,6 +868,12 @@ static int ad4030_get_current_scan_type(const struct
> iio_dev *indio_dev,
>  	return st->avg_log2 ? AD4030_SCAN_TYPE_AVG : AD4030_SCAN_TYPE_NORMAL;
>  }
>  
> +static int ad4030_update_scan_mode(struct iio_dev *indio_dev,
> +				   const unsigned long *scan_mask)
> +{
> +	return ad4030_set_mode(indio_dev, *scan_mask);
> +}
> +
>  static const struct iio_info ad4030_iio_info = {
>  	.read_avail = ad4030_read_avail,
>  	.read_raw = ad4030_read_raw,
> @@ -875,13 +881,9 @@ static const struct iio_info ad4030_iio_info = {
>  	.debugfs_reg_access = ad4030_reg_access,
>  	.read_label = ad4030_read_label,
>  	.get_current_scan_type = ad4030_get_current_scan_type,
> +	.update_scan_mode  = ad4030_update_scan_mode,
>  };
>  
> -static int ad4030_buffer_preenable(struct iio_dev *indio_dev)
> -{
> -	return ad4030_set_mode(indio_dev, *indio_dev->active_scan_mask);
> -}
> -
>  static bool ad4030_validate_scan_mask(struct iio_dev *indio_dev,
>  				      const unsigned long *scan_mask)
>  {
> @@ -895,7 +897,6 @@ static bool ad4030_validate_scan_mask(struct iio_dev
> *indio_dev,
>  }
>  
>  static const struct iio_buffer_setup_ops ad4030_buffer_setup_ops = {
> -	.preenable = ad4030_buffer_preenable,
>  	.validate_scan_mask = ad4030_validate_scan_mask,
>  };
>  
>