linux-kernel - Re: [PATCH V4 2/4] iio: adc: ad_sigma_delta: Export ad_sd

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Date:   Sun, 8 Sep 2019 10:35:44 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Mircea Caprioru <mircea.caprioru@...log.com>
Cc:     <Michael.Hennerich@...log.com>, <stefan.popa@...log.com>,
        <lars@...afoo.de>, <gregkh@...uxfoundation.org>,
        <linux-kernel@...r.kernel.org>, <linux-iio@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <robh+dt@...nel.org>
Subject: Re: [PATCH V4 2/4] iio: adc: ad_sigma_delta: Export ad_sd_calibrate

On Mon, 2 Sep 2019 16:08:29 +0300
Mircea Caprioru <mircea.caprioru@...log.com> wrote:

> This patch exports the ad_sd_calibrate function in order to be able to
> call it from outside ad_sigma_delta.
> 
> There are cases where the option to calibrate one channel at a time is
> necessary (ex. system calibration for zero scale and full scale).
> 
> Signed-off-by: Mircea Caprioru <mircea.caprioru@...log.com>
Applied, Thanks,
> ---
> Changelog V2:
> - no changes here
> 
> Changelog V3:
> - no changes here
> 
> Changelog V4:
> - no changes here
> 
>  drivers/iio/adc/ad_sigma_delta.c       | 3 ++-
>  include/linux/iio/adc/ad_sigma_delta.h | 2 ++
>  2 files changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
> index 2640b75fb774..8ba90486c787 100644
> --- a/drivers/iio/adc/ad_sigma_delta.c
> +++ b/drivers/iio/adc/ad_sigma_delta.c
> @@ -205,7 +205,7 @@ int ad_sd_reset(struct ad_sigma_delta *sigma_delta,
>  }
>  EXPORT_SYMBOL_GPL(ad_sd_reset);
>  
> -static int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,
> +int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,
>  	unsigned int mode, unsigned int channel)
>  {
>  	int ret;
> @@ -242,6 +242,7 @@ static int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,
>  
>  	return ret;
>  }
> +EXPORT_SYMBOL_GPL(ad_sd_calibrate);
>  
>  /**
>   * ad_sd_calibrate_all() - Performs channel calibration
> diff --git a/include/linux/iio/adc/ad_sigma_delta.h b/include/linux/iio/adc/ad_sigma_delta.h
> index 7716fa0c9fce..8a4e25a7080c 100644
> --- a/include/linux/iio/adc/ad_sigma_delta.h
> +++ b/include/linux/iio/adc/ad_sigma_delta.h
> @@ -119,6 +119,8 @@ int ad_sd_reset(struct ad_sigma_delta *sigma_delta,
>  
>  int ad_sigma_delta_single_conversion(struct iio_dev *indio_dev,
>  	const struct iio_chan_spec *chan, int *val);
> +int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,
> +	unsigned int mode, unsigned int channel);
>  int ad_sd_calibrate_all(struct ad_sigma_delta *sigma_delta,
>  	const struct ad_sd_calib_data *cd, unsigned int n);
>  int ad_sd_init(struct ad_sigma_delta *sigma_delta, struct iio_dev *indio_dev,