4  * SPDX-License-Identifier: Apache-2.0
22 	const struct opt3001_config *config = dev->config;  in opt3001_reg_read()
25 	if (i2c_burst_read_dt(&config->i2c, reg, value, 2) != 0) {  in opt3001_reg_read()
26 		return -EIO;  in opt3001_reg_read()
37 	const struct opt3001_config *config = dev->config;  in opt3001_reg_write()
45 	return i2c_write_dt(&config->i2c, tx_buf, sizeof(tx_buf));  in opt3001_reg_write()
55 		return -EIO;  in opt3001_reg_update()
67 	struct opt3001_data *drv_data = dev->data;  in opt3001_sample_fetch()
72 	drv_data->sample = 0U;  in opt3001_sample_fetch()
75 		return -EIO;  in opt3001_sample_fetch()
78 	drv_data->sample = value;  in opt3001_sample_fetch()
87 	struct opt3001_data *drv_data = dev->data;  in opt3001_channel_get()
91 		return -ENOTSUP;  in opt3001_channel_get()
95 	 * sample consists of 4 bits of exponent and 12 bits of mantissa  in opt3001_channel_get()
96 	 * bits 15 to 12 are exponent bits  in opt3001_channel_get()
100 	 * (2^(exponent value)) * 0.01 * mantissa value  in opt3001_channel_get()
102 	uval = (1 << (drv_data->sample >> OPT3001_SAMPLE_EXPONENT_SHIFT))  in opt3001_channel_get()
103 		* (drv_data->sample & OPT3001_MANTISSA_MASK);  in opt3001_channel_get()
104 	val->val1 = uval / 100;  in opt3001_channel_get()
105 	val->val2 = (uval % 100) * 10000;  in opt3001_channel_get()
117 	const struct opt3001_config *config = dev->config;  in opt3001_chip_init()
120 	if (!device_is_ready(config->i2c.bus)) {  in opt3001_chip_init()
122 		return -ENODEV;  in opt3001_chip_init()
126 		return -EIO;  in opt3001_chip_init()
131 		return -ENOTSUP;  in opt3001_chip_init()
135 		return -EIO;  in opt3001_chip_init()
140 		return -ENOTSUP;  in opt3001_chip_init()
147 		return -EIO;  in opt3001_chip_init()
156 		return -EINVAL;  in opt3001_init()