1 // SPDX-License-Identifier: GPL-2.0
5  * Copyright 2014-2019 Analog Devices Inc.
17 #include "ad7091r-base.h"
46 	ret = regmap_write(st->map, AD7091R_REG_CHANNEL,  in ad7091r_set_channel()
55 	return regmap_read(st->map, AD7091R_REG_RESULT, &dummy);  in ad7091r_set_channel()
69 	ret = regmap_read(st->map, AD7091R_REG_RESULT, &val);  in ad7091r_read_one()
73 	if (st->chip_info->reg_result_chan_id(val) != channel)  in ad7091r_read_one()
74 		return -EIO;  in ad7091r_read_one()
89 	guard(mutex)(&st->lock);  in ad7091r_read_raw()
93 		if (st->mode != AD7091R_MODE_COMMAND)  in ad7091r_read_raw()
94 			return -EBUSY;  in ad7091r_read_raw()
96 		ret = ad7091r_read_one(iio_dev, chan->channel, &read_val);  in ad7091r_read_raw()
104 		if (st->vref) {  in ad7091r_read_raw()
105 			ret = regulator_get_voltage(st->vref);  in ad7091r_read_raw()
111 			*val = st->chip_info->vref_mV;  in ad7091r_read_raw()
114 		*val2 = chan->scan_type.realbits;  in ad7091r_read_raw()
118 		return -EINVAL;  in ad7091r_read_raw()
132 		ret = regmap_read(st->map,  in ad7091r_read_event_config()
133 				  AD7091R_REG_CH_HIGH_LIMIT(chan->channel),  in ad7091r_read_event_config()
139 		ret = regmap_read(st->map,  in ad7091r_read_event_config()
140 				  AD7091R_REG_CH_LOW_LIMIT(chan->channel),  in ad7091r_read_event_config()
146 		return -EINVAL;  in ad7091r_read_event_config()
158 		return regmap_set_bits(st->map, AD7091R_REG_CONF,  in ad7091r_write_event_config()
162 		 * Set thresholds either to 0 or to 2^12 - 1 as appropriate to  in ad7091r_write_event_config()
167 			return regmap_write(st->map,  in ad7091r_write_event_config()
168 					    AD7091R_REG_CH_HIGH_LIMIT(chan->channel),  in ad7091r_write_event_config()
171 			return regmap_write(st->map,  in ad7091r_write_event_config()
172 					    AD7091R_REG_CH_LOW_LIMIT(chan->channel),  in ad7091r_write_event_config()
175 			return -EINVAL;  in ad7091r_write_event_config()
193 			ret = regmap_read(st->map,  in ad7091r_read_event_value()
194 					  AD7091R_REG_CH_HIGH_LIMIT(chan->channel),  in ad7091r_read_event_value()
200 			ret = regmap_read(st->map,  in ad7091r_read_event_value()
201 					  AD7091R_REG_CH_LOW_LIMIT(chan->channel),  in ad7091r_read_event_value()
207 			return -EINVAL;  in ad7091r_read_event_value()
210 		ret = regmap_read(st->map,  in ad7091r_read_event_value()
211 				  AD7091R_REG_CH_HYSTERESIS(chan->channel),  in ad7091r_read_event_value()
217 		return -EINVAL;  in ad7091r_read_event_value()
233 			return regmap_write(st->map,  in ad7091r_write_event_value()
234 					    AD7091R_REG_CH_HIGH_LIMIT(chan->channel),  in ad7091r_write_event_value()
237 			return regmap_write(st->map,  in ad7091r_write_event_value()
238 					    AD7091R_REG_CH_LOW_LIMIT(chan->channel),  in ad7091r_write_event_value()
241 			return -EINVAL;  in ad7091r_write_event_value()
244 		return regmap_write(st->map,  in ad7091r_write_event_value()
245 				    AD7091R_REG_CH_HYSTERESIS(chan->channel),  in ad7091r_write_event_value()
248 		return -EINVAL;  in ad7091r_write_event_value()
268 	ret = regmap_read(st->map, AD7091R_REG_ALERT, &read_val);  in ad7091r_event_handler()
272 	for (i = 0; i < st->chip_info->num_channels; i++) {  in ad7091r_event_handler()
292 	regulator_disable(st->vref);  in ad7091r_remove()
304 		return -ENOMEM;  in ad7091r_probe()
307 	st->dev = dev;  in ad7091r_probe()
308 	init_info->init_adc_regmap(st, init_info->regmap_config);  in ad7091r_probe()
309 	if (IS_ERR(st->map))  in ad7091r_probe()
310 		return dev_err_probe(st->dev, PTR_ERR(st->map),  in ad7091r_probe()
313 	iio_dev->info = &ad7091r_info;  in ad7091r_probe()
314 	iio_dev->modes = INDIO_DIRECT_MODE;  in ad7091r_probe()
316 	if (init_info->setup) {  in ad7091r_probe()
317 		ret = init_info->setup(st);  in ad7091r_probe()
323 		st->chip_info = init_info->info_irq;  in ad7091r_probe()
324 		ret = regmap_update_bits(st->map, AD7091R_REG_CONF,  in ad7091r_probe()
325 					 AD7091R_REG_CONF_ALERT_EN, BIT(4));  in ad7091r_probe()
333 						st->chip_info->name, iio_dev);  in ad7091r_probe()
337 		st->chip_info = init_info->info_no_irq;  in ad7091r_probe()
340 	iio_dev->name = st->chip_info->name;  in ad7091r_probe()
341 	iio_dev->num_channels = st->chip_info->num_channels;  in ad7091r_probe()
342 	iio_dev->channels = st->chip_info->channels;  in ad7091r_probe()
344 	st->vref = devm_regulator_get_optional(dev, "vref");  in ad7091r_probe()
345 	if (IS_ERR(st->vref)) {  in ad7091r_probe()
346 		if (PTR_ERR(st->vref) == -EPROBE_DEFER)  in ad7091r_probe()
347 			return -EPROBE_DEFER;  in ad7091r_probe()
349 		st->vref = NULL;  in ad7091r_probe()
351 		ret = regmap_set_bits(st->map, AD7091R_REG_CONF,  in ad7091r_probe()
354 			return dev_err_probe(st->dev, ret,  in ad7091r_probe()
357 		ret = regulator_enable(st->vref);  in ad7091r_probe()
366 	ret = st->chip_info->set_mode(st, AD7091R_MODE_COMMAND);  in ad7091r_probe()
399 MODULE_DESCRIPTION("Analog Devices AD7091Rx multi-channel converters");