1 // SPDX-License-Identifier: GPL-2.0
5  * Copyright 2014-2019 Analog Devices Inc.
16 #include "ad7091r-base.h"
67 		return -EINVAL;  in ad7091r_set_mode()
70 	ret = regmap_update_bits(st->map, AD7091R_REG_CONF,  in ad7091r_set_mode()
75 	st->mode = mode;  in ad7091r_set_mode()
85 	/* AD7091R_REG_CHANNEL specified which channels to be converted */  in ad7091r_set_channel()
86 	ret = regmap_write(st->map, AD7091R_REG_CHANNEL,  in ad7091r_set_channel()
95 	return regmap_read(st->map, AD7091R_REG_RESULT, &dummy);  in ad7091r_set_channel()
109 	ret = regmap_read(st->map, AD7091R_REG_RESULT, &val);  in ad7091r_read_one()
114 		return -EIO;  in ad7091r_read_one()
129 	mutex_lock(&st->lock);  in ad7091r_read_raw()
133 		if (st->mode != AD7091R_MODE_COMMAND) {  in ad7091r_read_raw()
134 			ret = -EBUSY;  in ad7091r_read_raw()
138 		ret = ad7091r_read_one(iio_dev, chan->channel, &read_val);  in ad7091r_read_raw()
147 		if (st->vref) {  in ad7091r_read_raw()
148 			ret = regulator_get_voltage(st->vref);  in ad7091r_read_raw()
154 			*val = st->chip_info->vref_mV;  in ad7091r_read_raw()
157 		*val2 = chan->scan_type.realbits;  in ad7091r_read_raw()
162 		ret = -EINVAL;  in ad7091r_read_raw()
167 	mutex_unlock(&st->lock);  in ad7091r_read_raw()
178 	struct iio_dev *iio_dev = dev_get_drvdata(st->dev);  in ad7091r_event_handler()
183 	ret = regmap_read(st->map, AD7091R_REG_ALERT, &read_val);  in ad7091r_event_handler()
187 	for (i = 0; i < st->chip_info->num_channels; i++) {  in ad7091r_event_handler()
207 	regulator_disable(st->vref);  in ad7091r_remove()
220 		return -ENOMEM;  in ad7091r_probe()
223 	st->dev = dev;  in ad7091r_probe()
224 	st->chip_info = chip_info;  in ad7091r_probe()
225 	st->map = map;  in ad7091r_probe()
227 	iio_dev->name = name;  in ad7091r_probe()
228 	iio_dev->info = &ad7091r_info;  in ad7091r_probe()
229 	iio_dev->modes = INDIO_DIRECT_MODE;  in ad7091r_probe()
231 	iio_dev->num_channels = chip_info->num_channels;  in ad7091r_probe()
232 	iio_dev->channels = chip_info->channels;  in ad7091r_probe()
242 	st->vref = devm_regulator_get_optional(dev, "vref");  in ad7091r_probe()
243 	if (IS_ERR(st->vref)) {  in ad7091r_probe()
244 		if (PTR_ERR(st->vref) == -EPROBE_DEFER)  in ad7091r_probe()
245 			return -EPROBE_DEFER;  in ad7091r_probe()
246 		st->vref = NULL;  in ad7091r_probe()
248 		ret = regulator_enable(st->vref);  in ad7091r_probe()
256 	/* Use command mode by default to convert only desired channels*/  in ad7091r_probe()
296 MODULE_DESCRIPTION("Analog Devices AD7091Rx multi-channel converters");