5  * SPDX-License-Identifier: Apache-2.0
14 #include <zephyr/drivers/i2c.h>
28 	const struct bq27z746_config *cfg = dev->config;  in bq27z746_read16()
29 	const int status = i2c_burst_read_dt(&cfg->i2c, reg, i2c_data, sizeof(i2c_data));  in bq27z746_read16()
43 	const struct bq27z746_config *cfg = dev->config;  in bq27z746_write16()
48 	return i2c_write_dt(&cfg->i2c, buf, sizeof(buf));  in bq27z746_write16()
54 		return -EINVAL;  in bq27z746_read_mac()
58 	const struct bq27z746_config *cfg = dev->config;  in bq27z746_read_mac()
69 	 * 0..1: The command (for verification)  in bq27z746_read_mac()
71 	 * 34: Checksum calculated as (uint8_t)(0xFF - (sum of all command and data bytes))  in bq27z746_read_mac()
72 	 * 35: Length including command, checksum and length (e.g. data length + 4)  in bq27z746_read_mac()
75 	ret = i2c_burst_read_dt(&cfg->i2c, BQ27Z746_ALTMANUFACTURERACCESS, buf,  in bq27z746_read_mac()
81 	/* The first two bytes read is the command and is used for verification */  in bq27z746_read_mac()
85 		LOG_ERR("Read command 0x%x != written command 0x%x", read_cmd, cmd);  in bq27z746_read_mac()
86 		return -EIO;  in bq27z746_read_mac()
92 	for (int i = 0; i < BQ27Z746_MAC_COMPLETE_LEN - 2; i++) {  in bq27z746_read_mac()
96 	const uint8_t checksum_expected = 0xFF - sum;  in bq27z746_read_mac()
100 		return -EIO;  in bq27z746_read_mac()
104 	data[0] = buf[35] - BQ27Z746_MAC_OVERHEAD_LEN;  in bq27z746_read_mac()
106 	/* Copy only the data to the user buffer (= skipping the first two command bytes) */  in bq27z746_read_mac()
126 		val->avg_current = (int16_t)tmp_val * 1000;  in bq27z746_get_prop()
130 		val->cycle_count = tmp_val * 100;  in bq27z746_get_prop()
134 		val->current = (int16_t)tmp_val * 1000;  in bq27z746_get_prop()
138 		val->full_charge_capacity = tmp_val * 1000;  in bq27z746_get_prop()
142 		val->remaining_capacity = tmp_val * 1000;  in bq27z746_get_prop()
146 		val->runtime_to_empty = tmp_val;  in bq27z746_get_prop()
150 		val->runtime_to_full = tmp_val;  in bq27z746_get_prop()
154 		val->sbs_mfr_access_word = tmp_val;  in bq27z746_get_prop()
158 		val->relative_state_of_charge = tmp_val;  in bq27z746_get_prop()
162 		val->temperature = tmp_val;  in bq27z746_get_prop()
166 		val->voltage = tmp_val * 1000;  in bq27z746_get_prop()
170 		val->sbs_at_rate = (int16_t)tmp_val;  in bq27z746_get_prop()
174 		val->sbs_at_rate_time_to_empty = tmp_val;  in bq27z746_get_prop()
178 		val->chg_voltage = tmp_val * 1000;  in bq27z746_get_prop()
182 		val->chg_current = tmp_val * 1000;  in bq27z746_get_prop()
186 		val->fg_status = tmp_val;  in bq27z746_get_prop()
190 		val->design_cap = tmp_val;  in bq27z746_get_prop()
193 		rc = -ENOTSUP;  in bq27z746_get_prop()
209 					       (uint8_t *)dst, dst_len - 1);  in bq27z746_get_buffer_prop()
211 			rc = -EINVAL;  in bq27z746_get_buffer_prop()
217 					       dst_len - 1);  in bq27z746_get_buffer_prop()
219 			rc = -EINVAL;  in bq27z746_get_buffer_prop()
225 					       dst_len - 1);  in bq27z746_get_buffer_prop()
227 			rc = -EINVAL;  in bq27z746_get_buffer_prop()
231 		rc = -ENOTSUP;  in bq27z746_get_buffer_prop()
253 		rc = -ENOTSUP;  in bq27z746_set_prop()
263 	cfg = dev->config;  in bq27z746_init()
265 	if (!device_is_ready(cfg->i2c.bus)) {  in bq27z746_init()
267 		return -ENODEV;  in bq27z746_init()
282 		.i2c = I2C_DT_SPEC_INST_GET(index),                                                \