power/supply/max77650-charger.c

1 // SPDX-License-Identifier: GPL-2.0
6 // Battery charger driver for MAXIM 77650/77651 charger/power-supply.
26 /* Charger is in prequalification mode. */
28 /* Charger is in fast-charge constant current mode. */
30 /* Charger is in JEITA modified fast-charge constant-current mode. */
32 /* Charger is in fast-charge constant-voltage mode. */
34 /* Charger is in JEITA modified fast-charge constant-voltage mode. */
36 /* Charger is in top-off mode. */
38 /* Charger is in JEITA modified top-off mode. */
46 /* Charger is suspended due to a fast-charge timer fault. */
95 			rv = regmap_update_bits(chg->map,  in max77650_charger_set_vchgin_min()
106 	return -EINVAL;  in max77650_charger_set_vchgin_min()
116 			rv = regmap_update_bits(chg->map,  in max77650_charger_set_ichgin_lim()
127 	return -EINVAL;  in max77650_charger_set_ichgin_lim()
134 	rv = regmap_update_bits(chg->map,  in max77650_charger_enable()
139 		dev_err(chg->dev, "unable to enable the charger: %d\n", rv);  in max77650_charger_enable()
148 	rv = regmap_update_bits(chg->map,  in max77650_charger_disable()
153 		dev_err(chg->dev, "unable to disable the charger: %d\n", rv);  in max77650_charger_disable()
163 	rv = regmap_read(chg->map, MAX77650_REG_STAT_CHG_B, &reg);  in max77650_charger_check_status()
165 		dev_err(chg->dev,  in max77650_charger_check_status()
172 		dev_err(chg->dev, "undervoltage lockout detected, disabling charger\n");  in max77650_charger_check_status()
176 		dev_err(chg->dev, "overvoltage lockout detected, disabling charger\n");  in max77650_charger_check_status()
183 		/* May be 0x10 - debouncing */  in max77650_charger_check_status()
199 		rv = regmap_read(chg->map, MAX77650_REG_STAT_CHG_B, &reg);  in max77650_charger_get_property()
204 			val->intval = POWER_SUPPLY_STATUS_CHARGING;  in max77650_charger_get_property()
213 			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;  in max77650_charger_get_property()
222 			val->intval = POWER_SUPPLY_STATUS_CHARGING;  in max77650_charger_get_property()
225 			val->intval = POWER_SUPPLY_STATUS_FULL;  in max77650_charger_get_property()
228 			val->intval = POWER_SUPPLY_STATUS_UNKNOWN;  in max77650_charger_get_property()
232 		rv = regmap_read(chg->map, MAX77650_REG_STAT_CHG_B, &reg);  in max77650_charger_get_property()
236 		val->intval = MAX77650_CHARGER_CHG_CHARGING(reg);  in max77650_charger_get_property()
239 		rv = regmap_read(chg->map, MAX77650_REG_STAT_CHG_B, &reg);  in max77650_charger_get_property()
244 			val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;  in max77650_charger_get_property()
254 			val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;  in max77650_charger_get_property()
258 			val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;  in max77650_charger_get_property()
261 			val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;  in max77650_charger_get_property()
265 		return -EINVAL;  in max77650_charger_get_property()
288 	dev = &pdev->dev;  in max77650_charger_probe()
289 	parent = dev->parent;  in max77650_charger_probe()
293 		return -ENOMEM;  in max77650_charger_probe()
297 	chg->map = dev_get_regmap(parent, NULL);  in max77650_charger_probe()
298 	if (!chg->map)  in max77650_charger_probe()
299 		return -ENODEV;  in max77650_charger_probe()
301 	chg->dev = dev;  in max77650_charger_probe()
303 	pscfg.of_node = dev->of_node;  in max77650_charger_probe()
331 	rv = of_property_read_u32(dev->of_node,  in max77650_charger_probe()
332 				  "input-voltage-min-microvolt", &prop);  in max77650_charger_probe()
339 	rv = of_property_read_u32(dev->of_node,  in max77650_charger_probe()
340 				  "input-current-limit-microamp", &prop);  in max77650_charger_probe()
358 	{ .compatible = "maxim,max77650-charger" },
365 		.name = "max77650-charger",
376 MODULE_ALIAS("platform:max77650-charger");