1 // SPDX-License-Identifier: GPL-2.0-only
4  * This driver is for the multi-block Switch-Mode Battery Charger and Boost
6  * integrated, single-cell lithium-ion battery charger.
8  * Sub-components:
9  *  - Charger core
10  *  - Buck
11  *  - DC charge-path
12  *  - USB charge-path
13  *  - Battery interface
14  *  - Boost (not implemented)
15  *  - Misc
16  *  - HF-Buck
29 #include <linux/extcon-provider.h>
141 		return 5600000 + (index - 43) * 200000;  in smbb_vin_fn()
188 		.name = "qcom,fast-charge-safe-current",
196 		.name = "qcom,fast-charge-current-limit",
204 		.name = "qcom,dc-current-limit",
211 		.name = "qcom,fast-charge-safe-voltage",
219 		.name = "qcom,fast-charge-high-threshold-voltage",
227 		.name = "qcom,fast-charge-low-threshold-voltage",
234 		.name = "qcom,auto-recharge-threshold-voltage",
241 		.name = "qcom,minimum-input-voltage",
248 		.name = "usb-charge-current-limit",
266 	if (val > prop->max || val < prop->min) {  in smbb_charger_attr_write()
267 		dev_err(chg->dev, "value out of range for %s [%u:%u]\n",  in smbb_charger_attr_write()
268 			prop->name, prop->min, prop->max);  in smbb_charger_attr_write()
269 		return -EINVAL;  in smbb_charger_attr_write()
272 	if (prop->safe_reg) {  in smbb_charger_attr_write()
273 		rc = regmap_read(chg->regmap,  in smbb_charger_attr_write()
274 				chg->addr + prop->safe_reg, &wval);  in smbb_charger_attr_write()
276 			dev_err(chg->dev,  in smbb_charger_attr_write()
278 				prop->name);  in smbb_charger_attr_write()
282 		wval = prop->hw_fn(wval);  in smbb_charger_attr_write()
285 			dev_warn(chg->dev,  in smbb_charger_attr_write()
287 				prop->name, wval);  in smbb_charger_attr_write()
292 	wval = smbb_hw_lookup(val, prop->hw_fn);  in smbb_charger_attr_write()
294 	rc = regmap_write(chg->regmap, chg->addr + prop->reg, wval);  in smbb_charger_attr_write()
296 		dev_err(chg->dev, "unable to update %s", prop->name);  in smbb_charger_attr_write()
299 	out = prop->hw_fn(wval);  in smbb_charger_attr_write()
301 		dev_warn(chg->dev,  in smbb_charger_attr_write()
303 			prop->name, out);  in smbb_charger_attr_write()
306 	dev_dbg(chg->dev, "%s <= %d\n", prop->name, out);  in smbb_charger_attr_write()
308 	chg->attr[which] = out;  in smbb_charger_attr_write()
322 	rc = regmap_read(chg->regmap, chg->addr + prop->reg, &val);  in smbb_charger_attr_read()
324 		dev_err(chg->dev, "failed to read %s\n", prop->name);  in smbb_charger_attr_read()
327 	val = prop->hw_fn(val);  in smbb_charger_attr_read()
328 	dev_dbg(chg->dev, "%s => %d\n", prop->name, val);  in smbb_charger_attr_read()
330 	chg->attr[which] = val;  in smbb_charger_attr_read()
344 	rc = of_property_read_u32(chg->dev->of_node, prop->name, &val);  in smbb_charger_attr_parse()
347 		if (!rc || !prop->fail_ok)  in smbb_charger_attr_parse()
360 		dev_err(chg->dev, "failed to read irq line\n");  in smbb_set_line_flag()
364 	mutex_lock(&chg->statlock);  in smbb_set_line_flag()
366 		chg->status |= flag;  in smbb_set_line_flag()
368 		chg->status &= ~flag;  in smbb_set_line_flag()
369 	mutex_unlock(&chg->statlock);  in smbb_set_line_flag()
371 	dev_dbg(chg->dev, "status = %03lx\n", chg->status);  in smbb_set_line_flag()
379 	extcon_set_state_sync(chg->edev, EXTCON_USB,  in smbb_usb_valid_handler()
380 				chg->status & STATUS_USBIN_VALID);  in smbb_usb_valid_handler()
381 	power_supply_changed(chg->usb_psy);  in smbb_usb_valid_handler()
391 	if (!chg->dc_disabled)  in smbb_dc_valid_handler()
392 		power_supply_changed(chg->dc_psy);  in smbb_dc_valid_handler()
403 	rc = regmap_read(chg->regmap, chg->addr + SMBB_BAT_TEMP_STATUS, &val);  in smbb_bat_temp_handler()
407 	mutex_lock(&chg->statlock);  in smbb_bat_temp_handler()
409 		chg->status |= STATUS_BAT_OK;  in smbb_bat_temp_handler()
411 		chg->status &= ~STATUS_BAT_OK;  in smbb_bat_temp_handler()
413 			chg->status |= STATUS_BAT_HOT;  in smbb_bat_temp_handler()
415 	mutex_unlock(&chg->statlock);  in smbb_bat_temp_handler()
417 	power_supply_changed(chg->bat_psy);  in smbb_bat_temp_handler()
426 	power_supply_changed(chg->bat_psy);  in smbb_bat_present_handler()
436 	power_supply_changed(chg->bat_psy);  in smbb_chg_done_handler()
446 	power_supply_changed(chg->bat_psy);  in smbb_chg_gone_handler()
447 	power_supply_changed(chg->usb_psy);  in smbb_chg_gone_handler()
448 	if (!chg->dc_disabled)  in smbb_chg_gone_handler()
449 		power_supply_changed(chg->dc_psy);  in smbb_chg_gone_handler()
459 	power_supply_changed(chg->bat_psy);  in smbb_chg_fast_handler()
469 	power_supply_changed(chg->bat_psy);  in smbb_chg_trkl_handler()
478 	{ "chg-done", smbb_chg_done_handler },
479 	{ "chg-fast", smbb_chg_fast_handler },
480 	{ "chg-trkl", smbb_chg_trkl_handler },
481 	{ "bat-temp-ok", smbb_bat_temp_handler },
482 	{ "bat-present", smbb_bat_present_handler },
483 	{ "chg-gone", smbb_chg_gone_handler },
484 	{ "usb-valid", smbb_usb_valid_handler },
485 	{ "dc-valid", smbb_dc_valid_handler },
497 		mutex_lock(&chg->statlock);  in smbb_usbin_get_property()
498 		val->intval = !(chg->status & STATUS_CHG_GONE) &&  in smbb_usbin_get_property()
499 				(chg->status & STATUS_USBIN_VALID);  in smbb_usbin_get_property()
500 		mutex_unlock(&chg->statlock);  in smbb_usbin_get_property()
503 		val->intval = chg->attr[ATTR_USBIN_IMAX];  in smbb_usbin_get_property()
506 		val->intval = 2500000;  in smbb_usbin_get_property()
509 		rc = -EINVAL;  in smbb_usbin_get_property()
526 				val->intval);  in smbb_usbin_set_property()
529 		rc = -EINVAL;  in smbb_usbin_set_property()
545 		mutex_lock(&chg->statlock);  in smbb_dcin_get_property()
546 		val->intval = !(chg->status & STATUS_CHG_GONE) &&  in smbb_dcin_get_property()
547 				(chg->status & STATUS_DCIN_VALID);  in smbb_dcin_get_property()
548 		mutex_unlock(&chg->statlock);  in smbb_dcin_get_property()
551 		val->intval = chg->attr[ATTR_DCIN_IMAX];  in smbb_dcin_get_property()
554 		val->intval = 2500000;  in smbb_dcin_get_property()
557 		rc = -EINVAL;  in smbb_dcin_get_property()
574 				val->intval);  in smbb_dcin_set_property()
577 		rc = -EINVAL;  in smbb_dcin_set_property()
598 	mutex_lock(&chg->statlock);  in smbb_battery_get_property()
599 	status = chg->status;  in smbb_battery_get_property()
600 	mutex_unlock(&chg->statlock);  in smbb_battery_get_property()
605 			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;  in smbb_battery_get_property()
607 			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;  in smbb_battery_get_property()
609 			val->intval = POWER_SUPPLY_STATUS_FULL;  in smbb_battery_get_property()
611 			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;  in smbb_battery_get_property()
613 			val->intval = POWER_SUPPLY_STATUS_CHARGING;  in smbb_battery_get_property()
615 			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;  in smbb_battery_get_property()
619 			val->intval = POWER_SUPPLY_HEALTH_GOOD;  in smbb_battery_get_property()
621 			val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;  in smbb_battery_get_property()
623 			val->intval = POWER_SUPPLY_HEALTH_COLD;  in smbb_battery_get_property()
627 			val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;  in smbb_battery_get_property()
629 			val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;  in smbb_battery_get_property()
631 			val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;  in smbb_battery_get_property()
634 		val->intval = !!(status & STATUS_BAT_PRESENT);  in smbb_battery_get_property()
637 		val->intval = chg->attr[ATTR_BAT_IMAX];  in smbb_battery_get_property()
640 		val->intval = chg->attr[ATTR_BAT_VMAX];  in smbb_battery_get_property()
643 		/* this charger is a single-cell lithium-ion battery charger  in smbb_battery_get_property()
647 		val->intval = POWER_SUPPLY_TECHNOLOGY_LION;  in smbb_battery_get_property()
650 		val->intval = 3000000; /* single-cell li-ion low end */  in smbb_battery_get_property()
653 		rc = -EINVAL;  in smbb_battery_get_property()
669 		rc = smbb_charger_attr_write(chg, ATTR_BAT_IMAX, val->intval);  in smbb_battery_set_property()
672 		rc = smbb_charger_attr_write(chg, ATTR_BAT_VMAX, val->intval);  in smbb_battery_set_property()
675 		rc = -EINVAL;  in smbb_battery_set_property()
756 static char *smbb_bif[] = { "smbb-bif" };
759 	.name = "smbb-bif",
769 	.name = "smbb-usbin",
779 	.name = "smbb-dcin",
793 	rc = regmap_update_bits(chg->regmap, chg->addr + SMBB_USB_OTG_CTL,  in smbb_chg_otg_enable()
796 		dev_err(chg->dev, "failed to update OTG_CTL\n");  in smbb_chg_otg_enable()
805 	rc = regmap_update_bits(chg->regmap, chg->addr + SMBB_USB_OTG_CTL,  in smbb_chg_otg_disable()
808 		dev_err(chg->dev, "failed to update OTG_CTL\n");  in smbb_chg_otg_disable()
818 	rc = regmap_read(chg->regmap, chg->addr + SMBB_USB_OTG_CTL, &value);  in smbb_chg_otg_is_enabled()
820 		dev_err(chg->dev, "failed to read OTG_CTL\n");  in smbb_chg_otg_is_enabled()
840 	chg = devm_kzalloc(&pdev->dev, sizeof(*chg), GFP_KERNEL);  in smbb_charger_probe()
842 		return -ENOMEM;  in smbb_charger_probe()
844 	chg->dev = &pdev->dev;  in smbb_charger_probe()
845 	mutex_init(&chg->statlock);  in smbb_charger_probe()
847 	chg->regmap = dev_get_regmap(pdev->dev.parent, NULL);  in smbb_charger_probe()
848 	if (!chg->regmap) {  in smbb_charger_probe()
849 		dev_err(&pdev->dev, "failed to locate regmap\n");  in smbb_charger_probe()
850 		return -ENODEV;  in smbb_charger_probe()
853 	rc = of_property_read_u32(pdev->dev.of_node, "reg", &chg->addr);  in smbb_charger_probe()
855 		dev_err(&pdev->dev, "missing or invalid 'reg' property\n");  in smbb_charger_probe()
859 	rc = regmap_read(chg->regmap, chg->addr + SMBB_MISC_REV2, &chg->revision);  in smbb_charger_probe()
861 		dev_err(&pdev->dev, "unable to read revision\n");  in smbb_charger_probe()
865 	chg->revision += 1;  in smbb_charger_probe()
866 	if (chg->revision != 1 && chg->revision != 2 && chg->revision != 3) {  in smbb_charger_probe()
867 		dev_err(&pdev->dev, "v%d hardware not supported\n", chg->revision);  in smbb_charger_probe()
868 		return -ENODEV;  in smbb_charger_probe()
870 	dev_info(&pdev->dev, "Initializing SMBB rev %u", chg->revision);  in smbb_charger_probe()
872 	chg->dc_disabled = of_property_read_bool(pdev->dev.of_node, "qcom,disable-dc");  in smbb_charger_probe()
877 			dev_err(&pdev->dev, "failed to parse/apply settings\n");  in smbb_charger_probe()
883 	bat_cfg.of_node = pdev->dev.of_node;  in smbb_charger_probe()
884 	chg->bat_psy = devm_power_supply_register(&pdev->dev,  in smbb_charger_probe()
887 	if (IS_ERR(chg->bat_psy)) {  in smbb_charger_probe()
888 		dev_err(&pdev->dev, "failed to register battery\n");  in smbb_charger_probe()
889 		return PTR_ERR(chg->bat_psy);  in smbb_charger_probe()
895 	chg->usb_psy = devm_power_supply_register(&pdev->dev,  in smbb_charger_probe()
898 	if (IS_ERR(chg->usb_psy)) {  in smbb_charger_probe()
899 		dev_err(&pdev->dev, "failed to register USB power supply\n");  in smbb_charger_probe()
900 		return PTR_ERR(chg->usb_psy);  in smbb_charger_probe()
903 	chg->edev = devm_extcon_dev_allocate(&pdev->dev, smbb_usb_extcon_cable);  in smbb_charger_probe()
904 	if (IS_ERR(chg->edev)) {  in smbb_charger_probe()
905 		dev_err(&pdev->dev, "failed to allocate extcon device\n");  in smbb_charger_probe()
906 		return -ENOMEM;  in smbb_charger_probe()
909 	rc = devm_extcon_dev_register(&pdev->dev, chg->edev);  in smbb_charger_probe()
911 		dev_err(&pdev->dev, "failed to register extcon device\n");  in smbb_charger_probe()
915 	if (!chg->dc_disabled) {  in smbb_charger_probe()
919 		chg->dc_psy = devm_power_supply_register(&pdev->dev,  in smbb_charger_probe()
922 		if (IS_ERR(chg->dc_psy)) {  in smbb_charger_probe()
923 			dev_err(&pdev->dev, "failed to register DC power supply\n");  in smbb_charger_probe()
924 			return PTR_ERR(chg->dc_psy);  in smbb_charger_probe()
937 		rc = devm_request_threaded_irq(&pdev->dev, irq, NULL,  in smbb_charger_probe()
941 			dev_err(&pdev->dev, "failed to request irq '%s'\n",  in smbb_charger_probe()
951 	chg->otg_rdesc.id = -1;  in smbb_charger_probe()
952 	chg->otg_rdesc.name = "otg-vbus";  in smbb_charger_probe()
953 	chg->otg_rdesc.ops = &smbb_chg_otg_ops;  in smbb_charger_probe()
954 	chg->otg_rdesc.owner = THIS_MODULE;  in smbb_charger_probe()
955 	chg->otg_rdesc.type = REGULATOR_VOLTAGE;  in smbb_charger_probe()
956 	chg->otg_rdesc.supply_name = "usb-otg-in";  in smbb_charger_probe()
957 	chg->otg_rdesc.of_match = "otg-vbus";  in smbb_charger_probe()
959 	config.dev = &pdev->dev;  in smbb_charger_probe()
962 	chg->otg_reg = devm_regulator_register(&pdev->dev, &chg->otg_rdesc,  in smbb_charger_probe()
964 	if (IS_ERR(chg->otg_reg))  in smbb_charger_probe()
965 		return PTR_ERR(chg->otg_reg);  in smbb_charger_probe()
967 	chg->jeita_ext_temp = of_property_read_bool(pdev->dev.of_node,  in smbb_charger_probe()
968 			"qcom,jeita-extended-temp-range");  in smbb_charger_probe()
971 	rc = regmap_update_bits(chg->regmap, chg->addr + SMBB_BAT_BTC_CTRL,  in smbb_charger_probe()
973 			chg->jeita_ext_temp ?  in smbb_charger_probe()
977 		dev_err(&pdev->dev,  in smbb_charger_probe()
979 			chg->jeita_ext_temp ? "JEITA extended" : "normal");  in smbb_charger_probe()
986 		if (r->rev_mask & BIT(chg->revision))  in smbb_charger_probe()
989 		rc = regmap_update_bits(chg->regmap, chg->addr + r->offset,  in smbb_charger_probe()
990 				r->mask, r->value);  in smbb_charger_probe()
992 			dev_err(&pdev->dev,  in smbb_charger_probe()
1009 	regmap_update_bits(chg->regmap, chg->addr + SMBB_CHG_CTRL, CTRL_EN, 0);  in smbb_charger_remove()
1013 	{ .compatible = "qcom,pm8226-charger" },
1014 	{ .compatible = "qcom,pm8941-charger" },
1023 		.name   = "qcom-smbb",
1029 MODULE_DESCRIPTION("Qualcomm Switch-Mode Battery Charger and Boost driver");