1 // SPDX-License-Identifier: GPL-2.0
3  * ScioSense ENS160 multi-gas sensor driver
8  *  https://www.sciosense.com/wp-content/uploads/2023/12/ENS160-Datasheet.pdf
112 		iio_device_claim_direct_scoped(return -EBUSY, indio_dev) {  in ens160_read_raw()
113 			guard(mutex)(&data->mutex);  in ens160_read_raw()
114 			ret = regmap_bulk_read(data->regmap, chan->address,  in ens160_read_raw()
115 					       &data->buf, sizeof(data->buf));  in ens160_read_raw()
118 			*val = le16_to_cpu(data->buf);  in ens160_read_raw()
123 		switch (chan->channel2) {  in ens160_read_raw()
135 			return -EINVAL;  in ens160_read_raw()
138 		return -EINVAL;  in ens160_read_raw()
146 	ret = regmap_write(data->regmap, ENS160_REG_OPMODE, mode);  in ens160_set_mode()
162 	struct device *dev = regmap_get_device(data->regmap);  in ens160_chip_init()
170 	ret = regmap_bulk_read(data->regmap, ENS160_REG_PART_ID, &data->buf,  in ens160_chip_init()
171 			       sizeof(data->buf));  in ens160_chip_init()
175 	if (le16_to_cpu(data->buf) != ENS160_PART_ID)  in ens160_chip_init()
176 		return -ENODEV;  in ens160_chip_init()
182 	ret = regmap_write(data->regmap, ENS160_REG_COMMAND,  in ens160_chip_init()
187 	ret = regmap_write(data->regmap, ENS160_REG_COMMAND,  in ens160_chip_init()
192 	ret = regmap_bulk_read(data->regmap, ENS160_REG_GPR_READ4,  in ens160_chip_init()
193 			       data->fw_version, sizeof(data->fw_version));  in ens160_chip_init()
197 	dev_info(dev, "firmware version: %u.%u.%u\n", data->fw_version[2],  in ens160_chip_init()
198 		 data->fw_version[1], data->fw_version[0]);  in ens160_chip_init()
208 	ret = regmap_read(data->regmap, ENS160_REG_DEVICE_STATUS, &status);  in ens160_chip_init()
214 		return -EINVAL;  in ens160_chip_init()
249 	struct iio_dev *indio_dev = pf->indio_dev;  in ens160_trigger_handler()
253 	guard(mutex)(&data->mutex);  in ens160_trigger_handler()
255 	ret = regmap_bulk_read(data->regmap, ENS160_REG_DATA_TVOC,  in ens160_trigger_handler()
256 			       data->scan.chans, sizeof(data->scan.chans));  in ens160_trigger_handler()
260 	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,  in ens160_trigger_handler()
261 					   pf->timestamp);  in ens160_trigger_handler()
263 	iio_trigger_notify_done(indio_dev->trig);  in ens160_trigger_handler()
277 		return regmap_set_bits(data->regmap, ENS160_REG_CONFIG,  in ens160_set_trigger_state()
280 		return regmap_clear_bits(data->regmap, ENS160_REG_CONFIG,  in ens160_set_trigger_state()
291 	struct device *dev = indio_dev->dev.parent;  in ens160_setup_trigger()
295 	trig = devm_iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name,  in ens160_setup_trigger()
298 		return dev_err_probe(dev, -ENOMEM,  in ens160_setup_trigger()
301 	trig->ops = &ens160_trigger_ops;  in ens160_setup_trigger()
308 	indio_dev->trig = iio_trigger_get(trig);  in ens160_setup_trigger()
314 					indio_dev->name,  in ens160_setup_trigger()
315 					indio_dev->trig);  in ens160_setup_trigger()
331 		return -ENOMEM;  in devm_ens160_core_probe()
334 	data->regmap = regmap;  in devm_ens160_core_probe()
336 	indio_dev->name = name;  in devm_ens160_core_probe()
337 	indio_dev->info = &ens160_info;  in devm_ens160_core_probe()
338 	indio_dev->modes = INDIO_DIRECT_MODE;  in devm_ens160_core_probe()
339 	indio_dev->channels = ens160_channels;  in devm_ens160_core_probe()
340 	indio_dev->num_channels = ARRAY_SIZE(ens160_channels);  in devm_ens160_core_probe()
353 	mutex_init(&data->mutex);  in devm_ens160_core_probe()