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The scale can now be obtained with the "in_voltage_scale" file. By default, the scale returned corresponds to the internal VREF of 2.5V. It is possible to use an external VREF (through the REFIN/REFOUT pin of the chip), by passing a regulator to the driver. The scale will then be calculated according to the voltage reported by the regulator. Signed-off-by: Paul Cercueil <paul.cercueil@analog.com> Co-developed-by: Beniamin Bia <beniamin.bia@analog.com> Signed-off-by: Beniamin Bia <beniamin.bia@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
26 lines
626 B
C
26 lines
626 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* AD7091RX Analog to Digital converter driver
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*
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* Copyright 2014-2019 Analog Devices Inc.
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*/
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#ifndef __DRIVERS_IIO_ADC_AD7091R_BASE_H__
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#define __DRIVERS_IIO_ADC_AD7091R_BASE_H__
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struct device;
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struct ad7091r_state;
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struct ad7091r_chip_info {
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unsigned int num_channels;
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const struct iio_chan_spec *channels;
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unsigned int vref_mV;
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};
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extern const struct regmap_config ad7091r_regmap_config;
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int ad7091r_probe(struct device *dev, const char *name,
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const struct ad7091r_chip_info *chip_info,
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struct regmap *map, int irq);
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#endif /* __DRIVERS_IIO_ADC_AD7091R_BASE_H__ */
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