1 // SPDX-License-Identifier: GPL-2.0
8  * Possible I2C slave addresses:
34 	ret = regmap_bulk_read(sen0322->regmap, SEN0322_REG_DATA, data,  in sen0322_read_data()
42 	 * but it is multiplied by 100 here to avoid floating-point math  in sen0322_read_data()
48 static int sen0322_read_scale(struct sen0322 *sen0322, int *num, int *den)  in sen0322_read_scale()  argument
53 	ret = regmap_read(sen0322->regmap, SEN0322_REG_COEFF, &val);  in sen0322_read_scale()
58 		*num = val;  in sen0322_read_scale()
60 	} else { /* The device is not calibrated, using the factory-defaults. */  in sen0322_read_scale()
61 		*num = 209;	/* Oxygen content in the atmosphere is 20.9%. */  in sen0322_read_scale()
65 	dev_dbg(regmap_get_device(sen0322->regmap), "scale: %d/%d\n",  in sen0322_read_scale()
66 		*num, *den);  in sen0322_read_scale()
78 	if (chan->type != IIO_CONCENTRATION)  in sen0322_read_raw()
79 		return -EINVAL;  in sen0322_read_raw()
98 		return -EINVAL;  in sen0322_read_raw()
122 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))  in sen0322_probe()
123 		return -ENODEV;  in sen0322_probe()
125 	iio_dev = devm_iio_device_alloc(&client->dev, sizeof(*sen0322));  in sen0322_probe()
127 		return -ENOMEM;  in sen0322_probe()
131 	sen0322->regmap = devm_regmap_init_i2c(client, &sen0322_regmap_conf);  in sen0322_probe()
132 	if (IS_ERR(sen0322->regmap))  in sen0322_probe()
133 		return PTR_ERR(sen0322->regmap);  in sen0322_probe()
135 	iio_dev->info = &sen0322_info;  in sen0322_probe()
136 	iio_dev->name = "sen0322";  in sen0322_probe()
137 	iio_dev->channels = &sen0322_channel;  in sen0322_probe()
138 	iio_dev->num_channels = 1;  in sen0322_probe()
139 	iio_dev->modes = INDIO_DIRECT_MODE;  in sen0322_probe()
141 	return devm_iio_device_register(&client->dev, iio_dev);  in sen0322_probe()