1 // SPDX-License-Identifier: GPL-2.0+
3  * hdc2010.c - Support for the TI HDC2010 and HDC2080
4  * temperature + relative humidity sensors
110 	u8 tmp = (~mask & data->drdy_config) | val;  in hdc2010_update_drdy_config()
113 	ret = i2c_smbus_write_byte_data(data->client,  in hdc2010_update_drdy_config()
118 	data->drdy_config = tmp;  in hdc2010_update_drdy_config()
126 	struct i2c_client *client = data->client;  in hdc2010_get_prim_measurement_word()
130 			hdc2010_reg_translation[chan->address].primary);  in hdc2010_get_prim_measurement_word()
133 		dev_err(&client->dev, "Could not read sensor measurement word\n");  in hdc2010_get_prim_measurement_word()
141 	struct i2c_client *client = data->client;  in hdc2010_get_peak_measurement_byte()
145 			hdc2010_reg_translation[chan->address].peak);  in hdc2010_get_peak_measurement_byte()
148 		dev_err(&client->dev, "Could not read sensor measurement byte\n");  in hdc2010_get_peak_measurement_byte()
155 	return !!(data->drdy_config & HDC2010_HEATER_EN);  in hdc2010_get_heater_status()
168 		if (chan->type == IIO_CURRENT) {  in hdc2010_read_raw()
173 			return -EBUSY;  in hdc2010_read_raw()
174 		mutex_lock(&data->lock);  in hdc2010_read_raw()
176 		mutex_unlock(&data->lock);  in hdc2010_read_raw()
187 			return -EBUSY;  in hdc2010_read_raw()
188 		mutex_lock(&data->lock);  in hdc2010_read_raw()
190 		mutex_unlock(&data->lock);  in hdc2010_read_raw()
200 		if (chan->type == IIO_TEMP)  in hdc2010_read_raw()
206 		*val = -15887;  in hdc2010_read_raw()
210 		return -EINVAL;  in hdc2010_read_raw()
223 		if (chan->type != IIO_CURRENT || val2 != 0)  in hdc2010_write_raw()
224 			return -EINVAL;  in hdc2010_write_raw()
234 			return -EINVAL;  in hdc2010_write_raw()
237 		mutex_lock(&data->lock);  in hdc2010_write_raw()
239 		mutex_unlock(&data->lock);  in hdc2010_write_raw()
242 		return -EINVAL;  in hdc2010_write_raw()
259 	if (!i2c_check_functionality(client->adapter,  in hdc2010_probe()
261 		return -EOPNOTSUPP;  in hdc2010_probe()
263 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));  in hdc2010_probe()
265 		return -ENOMEM;  in hdc2010_probe()
269 	data->client = client;  in hdc2010_probe()
270 	mutex_init(&data->lock);  in hdc2010_probe()
276 	indio_dev->name = "hdc2010";  in hdc2010_probe()
277 	indio_dev->modes = INDIO_DIRECT_MODE;  in hdc2010_probe()
278 	indio_dev->info = &hdc2010_info;  in hdc2010_probe()
280 	indio_dev->channels = hdc2010_channels;  in hdc2010_probe()
281 	indio_dev->num_channels = ARRAY_SIZE(hdc2010_channels);  in hdc2010_probe()
289 	 * We enable both temp and humidity measurement.  in hdc2010_probe()
292 	tmp = (data->measurement_config & ~HDC2010_MEAS_CONF) |  in hdc2010_probe()
297 		dev_warn(&client->dev, "Unable to set up measurement\n");  in hdc2010_probe()
299 			dev_warn(&client->dev, "Unable to restore default AMM\n");  in hdc2010_probe()
303 	data->measurement_config = tmp;  in hdc2010_probe()
317 		dev_warn(&client->dev, "Unable to restore default AMM\n");  in hdc2010_remove()
346 MODULE_DESCRIPTION("TI HDC2010 humidity and temperature sensor driver");