1 /* max17048.c - Driver for max17048 battery fuel gauge */
6  * SPDX-License-Identifier: Apache-2.0
52 	const struct max17048_config *cfg = dev->config;  in max17048_read_register()
53 	int rc = i2c_write_read_dt(&cfg->i2c, &registerId, sizeof(registerId), max17048_buffer,  in max17048_read_register()
85 	 * https://www.analog.com/media/en/technical-documentation/data-sheets/  in max17048_voltage()
86 	 * MAX17048-MAX17049.pdf  in max17048_voltage()
87 	 * Page 10, Table 2. Register Summary: 78.125µV/cell  in max17048_voltage()
109 	 * https://www.analog.com/media/en/technical-documentation/data-she4ets/  in max17048_percent()
110 	 * MAX17048-MAX17049.pdf  in max17048_percent()
111 	 * Page 10, Table 2. Register Summary: 1%/256  in max17048_percent()
112 	 * So to obtain the total percentaje we just divide the read value by 256  in max17048_percent()
132 	 * https://www.analog.com/media/en/technical-documentation/data-sheets/  in max17048_crate()
133 	 * MAX17048-MAX17049.pdf  in max17048_crate()
148 	const struct max17048_config *cfg = dev->config;  in max17048_init()
152 	if (!device_is_ready(cfg->i2c.bus)) {  in max17048_init()
154 		return -ENODEV;  in max17048_init()
168 		return -ENODEV;  in max17048_init()
180 	struct max17048_data *data = dev->data;  in max17048_get_single_prop_impl()
185 		val->runtime_to_empty = data->time_to_empty;  in max17048_get_single_prop_impl()
188 		val->runtime_to_full = data->time_to_full;  in max17048_get_single_prop_impl()
191 		val->relative_state_of_charge = data->charge;  in max17048_get_single_prop_impl()
194 		val->voltage = data->voltage;  in max17048_get_single_prop_impl()
197 		rc = -ENOTSUP;  in max17048_get_single_prop_impl()
209 	struct max17048_data *data = dev->data;  in max17048_get_prop()
210 	int rc = max17048_percent(dev, &data->charge);  in max17048_get_prop()
219 	rc = max17048_voltage(dev, &data->voltage);  in max17048_get_prop()
241 		data->charging = crate > 0;  in max17048_get_prop()
253 		if (data->charging) {  in max17048_get_prop()
254 			uint8_t percentage_pending = 100 - data->charge;  in max17048_get_prop()
257 			data->time_to_empty = 0;  in max17048_get_prop()
258 			data->time_to_full = hours_pending * 60 / 1000;  in max17048_get_prop()
261 			uint32_t hours_pending = data->charge * 1000000 / -crate;  in max17048_get_prop()
263 			data->time_to_empty = hours_pending * 60 / 1000;  in max17048_get_prop()
264 			data->time_to_full = 0;  in max17048_get_prop()
272 		data->charging = false;  in max17048_get_prop()
273 		data->time_to_full = 0;  in max17048_get_prop()
274 		data->time_to_empty = 0;  in max17048_get_prop()