4  * SPDX-License-Identifier: Apache-2.0
41 static int tmp114_reg_read(const struct device *dev, uint8_t reg,  in tmp114_reg_read()  argument
44 	const struct tmp114_dev_config *cfg = dev->config;  in tmp114_reg_read()
46 	if (i2c_burst_read_dt(&cfg->bus, reg, (uint8_t *)val, 2)  in tmp114_reg_read()
48 		return -EIO;  in tmp114_reg_read()
56 static int tmp114_reg_write(const struct device *dev, uint8_t reg,  in tmp114_reg_write()  argument
59 	const struct tmp114_dev_config *cfg = dev->config;  in tmp114_reg_write()
60 	uint8_t tx_buf[3] = {reg, val >> 8, val & 0xFF};  in tmp114_reg_write()
62 	return i2c_write_dt(&cfg->bus, tx_buf, sizeof(tx_buf));  in tmp114_reg_write()
68 		LOG_ERR("%s: Failed to get Device ID register!", dev->name);  in tmp114_device_id_check()
69 		return -EIO;  in tmp114_device_id_check()
73 		LOG_ERR("%s: Failed to match the device ID!", dev->name);  in tmp114_device_id_check()
74 		return -EINVAL;  in tmp114_device_id_check()
83 	struct tmp114_data *drv_data = dev->data;  in tmp114_sample_fetch()
86 	int rc;  in tmp114_sample_fetch()  local
92 	drv_data->sample = 0U;  in tmp114_sample_fetch()
95 	rc = tmp114_reg_read(dev, TMP114_REG_ALERT, &cfg_reg);  in tmp114_sample_fetch()
96 	if (rc < 0) {  in tmp114_sample_fetch()
97 		LOG_ERR("%s, Failed to read from CFGR register", dev->name);  in tmp114_sample_fetch()
98 		return rc;  in tmp114_sample_fetch()
102 		LOG_DBG("%s: no data ready", dev->name);  in tmp114_sample_fetch()
103 		return -EBUSY;  in tmp114_sample_fetch()
107 	rc = tmp114_reg_read(dev, TMP114_REG_TEMP, &value);  in tmp114_sample_fetch()
108 	if (rc < 0) {  in tmp114_sample_fetch()
109 		LOG_ERR("%s: Failed to read from TEMP register!", dev->name);  in tmp114_sample_fetch()
110 		return rc;  in tmp114_sample_fetch()
114 	drv_data->sample = (int16_t)value;  in tmp114_sample_fetch()
123 	struct tmp114_data *drv_data = dev->data;  in tmp114_channel_get()
127 		return -ENOTSUP;  in tmp114_channel_get()
134 	tmp = ((int16_t)drv_data->sample * (int32_t)TMP114_RESOLUTION) / 10;  in tmp114_channel_get()
135 	val->val1 = tmp / 1000000; /* uCelsius */  in tmp114_channel_get()
136 	val->val2 = tmp % 1000000;  in tmp114_channel_get()
145 	int rc;  in tmp114_attr_get()  local
148 		return -ENOTSUP;  in tmp114_attr_get()
153 		rc = tmp114_reg_read(dev, TMP114_REG_CFGR, &data);  in tmp114_attr_get()
154 		if (rc < 0) {  in tmp114_attr_get()
155 			return rc;  in tmp114_attr_get()
159 		return -ENOTSUP;  in tmp114_attr_get()
162 	val->val1 = data;  in tmp114_attr_get()
163 	val->val2 = 0;  in tmp114_attr_get()
174 	int rc;  in tmp114_attr_set()  local
177 		return -ENOTSUP;  in tmp114_attr_set()
185 		rc = tmp114_reg_read(dev, TMP114_REG_CFGR, &value);  in tmp114_attr_set()
186 		if (rc < 0) {  in tmp114_attr_set()
187 			return rc;  in tmp114_attr_set()
190 		if (val->val1) {  in tmp114_attr_set()
196 		return -ENOTSUP;  in tmp114_attr_set()
209 	struct tmp114_data *drv_data = dev->data;  in tmp114_init()
210 	const struct tmp114_dev_config *cfg = dev->config;  in tmp114_init()
211 	int rc;  in tmp114_init()  local
214 	if (!i2c_is_ready_dt(&cfg->bus)) {  in tmp114_init()
215 		LOG_ERR("I2C dev %s not ready", cfg->bus.bus->name);  in tmp114_init()
216 		return -EINVAL;  in tmp114_init()
220 	rc = tmp114_device_id_check(dev, &id);  in tmp114_init()
221 	if (rc < 0) {  in tmp114_init()
222 		return rc;  in tmp114_init()
225 	drv_data->id = id;  in tmp114_init()