power/supply/sc2731_charger.c

67 static void sc2731_charger_stop_charge(struct sc2731_charger_info *info)
69 	regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
72 	regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
76 static int sc2731_charger_start_charge(struct sc2731_charger_info *info)
81 	ret = regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
87 	return regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
91 static int sc2731_charger_set_current_limit(struct sc2731_charger_info *info,
105 	return regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG5,
110 static int sc2731_charger_set_current(struct sc2731_charger_info *info, u32 cur)
124 	ret = regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
130 	return regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG1,
134 static int sc2731_charger_get_status(struct sc2731_charger_info *info)
139 	ret = regmap_read(info->regmap, SC2731_CHARGE_STATUS, &val);
149 static int sc2731_charger_get_current(struct sc2731_charger_info *info,
155 	ret = regmap_read(info->regmap, info->base + SC2731_CHG_CFG1, &val);
165 static int sc2731_charger_get_current_limit(struct sc2731_charger_info *info,
171 	ret = regmap_read(info->regmap, info->base + SC2731_CHG_CFG5, &val);
206 	struct sc2731_charger_info *info = power_supply_get_drvdata(psy);
209 	mutex_lock(&info->lock);
211 	if (!info->charging) {
212 		mutex_unlock(&info->lock);
218 		ret = sc2731_charger_set_current(info, val->intval / 1000);
220 			dev_err(info->dev, "set charge current failed\n");
224 		ret = sc2731_charger_set_current_limit(info,
227 			dev_err(info->dev, "set input current limit failed\n");
234 	mutex_unlock(&info->lock);
242 	struct sc2731_charger_info *info = power_supply_get_drvdata(psy);
246 	mutex_lock(&info->lock);
250 		if (info->charging)
251 			val->intval = sc2731_charger_get_status(info);
257 		if (!info->charging) {
260 			ret = sc2731_charger_get_current(info, &cur);
269 		if (!info->charging) {
272 			ret = sc2731_charger_get_current_limit(info, &cur);
285 	mutex_unlock(&info->lock);
325 	struct sc2731_charger_info *info =
329 	mutex_lock(&info->lock);
331 	if (info->limit > 0 && !info->charging) {
333 		ret = sc2731_charger_set_current_limit(info, info->limit);
337 		ret = sc2731_charger_set_current(info, info->limit);
341 		ret = sc2731_charger_start_charge(info);
345 		info->charging = true;
346 	} else if (!info->limit && info->charging) {
348 		info->charging = false;
349 		sc2731_charger_stop_charge(info);
353 	mutex_unlock(&info->lock);
359 	struct sc2731_charger_info *info =
362 	info->limit = limit;
364 	schedule_work(&info->work);
369 static int sc2731_charger_hw_init(struct sc2731_charger_info *info)
376 	ret = regmap_update_bits(info->regmap, SC2731_MODULE_EN1,
381 	ret = power_supply_get_battery_info(info->psy_usb, &bat_info);
383 		dev_warn(info->dev, "no battery information is supplied\n");
412 		power_supply_put_battery_info(info->psy_usb, bat_info);
416 	ret = regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG2,
422 	ret = regmap_update_bits(info->regmap, info->base + SC2731_CHG_CFG0,
433 	regmap_update_bits(info->regmap, SC2731_MODULE_EN1, SC2731_CHARGE_EN, 0);
437 static void sc2731_charger_detect_status(struct sc2731_charger_info *info)
446 	if (info->usb_phy->chg_state != USB_CHARGER_PRESENT)
449 	usb_phy_get_charger_current(info->usb_phy, &min, &max);
450 	info->limit = min;
452 	schedule_work(&info->work);
458 	struct sc2731_charger_info *info;
462 	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
463 	if (!info)
466 	mutex_init(&info->lock);
467 	info->dev = &pdev->dev;
468 	INIT_WORK(&info->work, sc2731_charger_work);
470 	info->regmap = dev_get_regmap(pdev->dev.parent, NULL);
471 	if (!info->regmap) {
476 	ret = of_property_read_u32(np, "reg", &info->base);
482 	charger_cfg.drv_data = info;
484 	info->psy_usb = devm_power_supply_register(&pdev->dev,
487 	if (IS_ERR(info->psy_usb)) {
489 		return PTR_ERR(info->psy_usb);
492 	ret = sc2731_charger_hw_init(info);
496 	info->usb_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "phys", 0);
497 	if (IS_ERR(info->usb_phy)) {
499 		return PTR_ERR(info->usb_phy);
502 	info->usb_notify.notifier_call = sc2731_charger_usb_change;
503 	ret = usb_register_notifier(info->usb_phy, &info->usb_notify);
509 	sc2731_charger_detect_status(info);
516 	struct sc2731_charger_info *info = platform_get_drvdata(pdev);
518 	usb_unregister_notifier(info->usb_phy, &info->usb_notify);