46 		val->intval = batt->technology;  in lego_ev3_battery_get_property()
50 		ret = iio_read_channel_processed(batt->iio_v, &val->intval);  in lego_ev3_battery_get_property()
54 		val->intval *= 2000;  in lego_ev3_battery_get_property()
55 		val->intval += 50000;  in lego_ev3_battery_get_property()
58 		ret = iio_read_channel_processed(batt->iio_i, &val2);  in lego_ev3_battery_get_property()
64 		val->intval += val2;  in lego_ev3_battery_get_property()
67 		val->intval = batt->v_max;  in lego_ev3_battery_get_property()
70 		val->intval = batt->v_min;  in lego_ev3_battery_get_property()
74 		ret = iio_read_channel_processed(batt->iio_i, &val->intval);  in lego_ev3_battery_get_property()
78 		val->intval *= 20000;  in lego_ev3_battery_get_property()
79 		val->intval /= 15;  in lego_ev3_battery_get_property()
82 		val->intval = POWER_SUPPLY_SCOPE_SYSTEM;  in lego_ev3_battery_get_property()
85 		return -EINVAL;  in lego_ev3_battery_get_property()
100 		 * Only allow changing technology from Unknown to NiMH. Li-ion  in lego_ev3_battery_set_property()
107 		if (batt->technology != POWER_SUPPLY_TECHNOLOGY_UNKNOWN)  in lego_ev3_battery_set_property()
108 			return -EINVAL;  in lego_ev3_battery_set_property()
109 		switch (val->intval) {  in lego_ev3_battery_set_property()
111 			batt->technology = POWER_SUPPLY_TECHNOLOGY_NiMH;  in lego_ev3_battery_set_property()
112 			batt->v_max = 7800000;  in lego_ev3_battery_set_property()
113 			batt->v_min = 5400000;  in lego_ev3_battery_set_property()
116 			return -EINVAL;  in lego_ev3_battery_set_property()
120 		return -EINVAL;  in lego_ev3_battery_set_property()
132 		batt->technology == POWER_SUPPLY_TECHNOLOGY_UNKNOWN;  in lego_ev3_battery_property_is_writeable()
145 	.name			= "lego-ev3-battery",
156 	struct device *dev = &pdev->dev;  in lego_ev3_battery_probe()
163 		return -ENOMEM;  in lego_ev3_battery_probe()
167 	batt->iio_v = devm_iio_channel_get(dev, "voltage");  in lego_ev3_battery_probe()
168 	err = PTR_ERR_OR_ZERO(batt->iio_v);  in lego_ev3_battery_probe()
173 	batt->iio_i = devm_iio_channel_get(dev, "current");  in lego_ev3_battery_probe()
174 	err = PTR_ERR_OR_ZERO(batt->iio_i);  in lego_ev3_battery_probe()
179 	batt->rechargeable_gpio = devm_gpiod_get(dev, "rechargeable", GPIOD_IN);  in lego_ev3_battery_probe()
180 	err = PTR_ERR_OR_ZERO(batt->rechargeable_gpio);  in lego_ev3_battery_probe()
189 	if (gpiod_get_value(batt->rechargeable_gpio)) {  in lego_ev3_battery_probe()
190 		/* 2-cell Li-ion, 7.4V nominal */  in lego_ev3_battery_probe()
191 		batt->technology = POWER_SUPPLY_TECHNOLOGY_LION;  in lego_ev3_battery_probe()
192 		batt->v_max = 84000000;  in lego_ev3_battery_probe()
193 		batt->v_min = 60000000;  in lego_ev3_battery_probe()
196 		batt->technology = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;  in lego_ev3_battery_probe()
197 		batt->v_max = 90000000;  in lego_ev3_battery_probe()
198 		batt->v_min = 48000000;  in lego_ev3_battery_probe()
201 	psy_cfg.of_node = pdev->dev.of_node;  in lego_ev3_battery_probe()
204 	batt->psy = devm_power_supply_register(dev, &lego_ev3_battery_desc,  in lego_ev3_battery_probe()
206 	err = PTR_ERR_OR_ZERO(batt->psy);  in lego_ev3_battery_probe()
216 	{ .compatible = "lego,ev3-battery", },
223 		.name		= "lego-ev3-battery",