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iio: adc: ad_sigma_delta: Export ad_sd_calibrate

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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@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Mircea Caprioru 2019-09-02 16:08:29 +03:00 committed by Jonathan Cameron
parent b73b93a2af
commit c88c8cd826
2 changed files with 4 additions and 1 deletions
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3
drivers/iio/adc/ad_sigma_delta.c
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@ -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

2
include/linux/iio/adc/ad_sigma_delta.h
View File

@ -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,