1 // SPDX-License-Identifier: GPL-2.0
8  * Authors: xuhuicong <xhc@rock-chips.com>
64 	struct power_supply_battery_info battery;  member
90 	ret = regmap_bulk_read(cw_bat->regmap, reg, &value, sizeof(value));  in cw_read_word()
105 	ret = regmap_read(cw_bat->regmap, CW2015_REG_MODE, &reg_val);  in cw_update_profile()
111 		dev_err(cw_bat->dev,  in cw_update_profile()
112 			"Gauge is in sleep mode, can't update battery info\n");  in cw_update_profile()
113 		return -EINVAL;  in cw_update_profile()
116 	/* write new battery info */  in cw_update_profile()
117 	ret = regmap_raw_write(cw_bat->regmap, CW2015_REG_BATINFO,  in cw_update_profile()
118 			       cw_bat->bat_profile,  in cw_update_profile()
126 	reg_val |= CW2015_ATHD(cw_bat->alert_level);  in cw_update_profile()
127 	ret = regmap_write(cw_bat->regmap, CW2015_REG_CONFIG, reg_val);  in cw_update_profile()
131 	/* reset gauge to apply new battery profile */  in cw_update_profile()
134 	ret = regmap_write(cw_bat->regmap, CW2015_REG_MODE, reg_val);  in cw_update_profile()
142 	ret = regmap_write(cw_bat->regmap, CW2015_REG_MODE, reset_val);  in cw_update_profile()
147 	ret = regmap_read_poll_timeout(cw_bat->regmap, CW2015_REG_SOC,  in cw_update_profile()
151 		dev_err(cw_bat->dev,  in cw_update_profile()
154 		dev_dbg(cw_bat->dev, "Battery profile updated\n");  in cw_update_profile()
166 		ret = regmap_write(cw_bat->regmap, CW2015_REG_MODE, reg_val);  in cw_init()
171 	ret = regmap_read(cw_bat->regmap, CW2015_REG_CONFIG, &reg_val);  in cw_init()
175 	if ((reg_val & CW2015_MASK_ATHD) != CW2015_ATHD(cw_bat->alert_level)) {  in cw_init()
176 		dev_dbg(cw_bat->dev, "Setting new alert level\n");  in cw_init()
178 		reg_val |= ~CW2015_ATHD(cw_bat->alert_level);  in cw_init()
179 		ret = regmap_write(cw_bat->regmap, CW2015_REG_CONFIG, reg_val);  in cw_init()
184 	ret = regmap_read(cw_bat->regmap, CW2015_REG_CONFIG, &reg_val);  in cw_init()
189 		dev_dbg(cw_bat->dev,  in cw_init()
190 			"Battery profile not present, uploading battery profile\n");  in cw_init()
191 		if (cw_bat->bat_profile) {  in cw_init()
194 				dev_err(cw_bat->dev,  in cw_init()
195 					"Failed to upload battery profile\n");  in cw_init()
199 			dev_warn(cw_bat->dev,  in cw_init()
202 	} else if (cw_bat->bat_profile) {  in cw_init()
205 		ret = regmap_raw_read(cw_bat->regmap, CW2015_REG_BATINFO,  in cw_init()
208 			dev_err(cw_bat->dev,  in cw_init()
209 				"Failed to read stored battery profile\n");  in cw_init()
213 		if (memcmp(bat_info, cw_bat->bat_profile, CW2015_SIZE_BATINFO)) {  in cw_init()
214 			dev_warn(cw_bat->dev, "Replacing stored battery profile\n");  in cw_init()
220 		dev_warn(cw_bat->dev,  in cw_init()
221 			 "Can't check current battery profile, no profile provided\n");  in cw_init()
224 	dev_dbg(cw_bat->dev, "Battery profile configured\n");  in cw_init()
234 	ret = regmap_write(cw_bat->regmap, CW2015_REG_MODE, reset_val);  in cw_power_on_reset()
242 	ret = regmap_write(cw_bat->regmap, CW2015_REG_MODE, reset_val);  in cw_power_on_reset()
253 	(((current) < (previous) + (up)) && ((current) > (previous) - (down)))
260 	ret = regmap_read(cw_bat->regmap, CW2015_REG_SOC, &soc);  in cw_get_soc()
266 			CW2015_BAT_SOC_ERROR_MS / cw_bat->poll_interval_ms;  in cw_get_soc()
268 		dev_err(cw_bat->dev, "Invalid SoC %d%%\n", soc);  in cw_get_soc()
269 		cw_bat->read_errors++;  in cw_get_soc()
270 		if (cw_bat->read_errors > max_error_cycles) {  in cw_get_soc()
271 			dev_warn(cw_bat->dev,  in cw_get_soc()
274 			cw_bat->read_errors = 0;  in cw_get_soc()
276 		return cw_bat->soc;  in cw_get_soc()
278 	cw_bat->read_errors = 0;  in cw_get_soc()
281 	if (cw_bat->status == POWER_SUPPLY_STATUS_CHARGING && soc == cw_bat->soc) {  in cw_get_soc()
283 			CW2015_BAT_CHARGING_STUCK_MS / cw_bat->poll_interval_ms;  in cw_get_soc()
285 		cw_bat->charge_stuck_cnt++;  in cw_get_soc()
286 		if (cw_bat->charge_stuck_cnt > max_stuck_cycles) {  in cw_get_soc()
287 			dev_warn(cw_bat->dev,  in cw_get_soc()
290 			cw_bat->charge_stuck_cnt = 0;  in cw_get_soc()
293 		cw_bat->charge_stuck_cnt = 0;  in cw_get_soc()
297 	if (cw_bat->charger_attached && HYSTERESIS(soc, cw_bat->soc, 0, 3))  in cw_get_soc()
298 		soc = cw_bat->soc;  in cw_get_soc()
301 	if (!cw_bat->charger_attached && HYSTERESIS(soc, cw_bat->soc, 3, 0))  in cw_get_soc()
302 		soc = cw_bat->soc;  in cw_get_soc()
328 	if (cw_bat->dual_cell)  in cw_get_voltage()
331 	dev_dbg(cw_bat->dev, "Read voltage: %d mV, raw=0x%04x\n",  in cw_get_voltage()
352 	ret = power_supply_am_i_supplied(cw_bat->rk_bat);  in cw_update_charge_status()
354 		dev_warn(cw_bat->dev, "Failed to get supply state: %d\n", ret);  in cw_update_charge_status()
359 		if (cw_bat->charger_attached != charger_attached) {  in cw_update_charge_status()
360 			cw_bat->battery_changed = true;  in cw_update_charge_status()
362 				cw_bat->charge_count++;  in cw_update_charge_status()
364 		cw_bat->charger_attached = charger_attached;  in cw_update_charge_status()
374 		dev_err(cw_bat->dev, "Failed to get SoC from gauge: %d\n", soc);  in cw_update_soc()
375 	else if (cw_bat->soc != soc) {  in cw_update_soc()
376 		cw_bat->soc = soc;  in cw_update_soc()
377 		cw_bat->battery_changed = true;  in cw_update_soc()
387 		dev_err(cw_bat->dev, "Failed to get voltage from gauge: %d\n",  in cw_update_voltage()
390 		cw_bat->voltage_mv = voltage_mv;  in cw_update_voltage()
397 	if (cw_bat->charger_attached) {  in cw_update_status()
398 		if (cw_bat->soc >= 100)  in cw_update_status()
404 	if (cw_bat->status != status)  in cw_update_status()
405 		cw_bat->battery_changed = true;  in cw_update_status()
406 	cw_bat->status = status;  in cw_update_status()
415 		dev_err(cw_bat->dev, "Failed to get time to empty from gauge: %d\n",  in cw_update_time_to_empty()
419 	cw_bat->time_to_empty = time_to_empty;  in cw_update_time_to_empty()
431 	ret = regmap_read(cw_bat->regmap, CW2015_REG_MODE, &reg_val);  in cw_bat_work()
433 		dev_err(cw_bat->dev, "Failed to read mode from gauge: %d\n", ret);  in cw_bat_work()
449 	dev_dbg(cw_bat->dev, "charger_attached = %d\n", cw_bat->charger_attached);  in cw_bat_work()
450 	dev_dbg(cw_bat->dev, "status = %d\n", cw_bat->status);  in cw_bat_work()
451 	dev_dbg(cw_bat->dev, "soc = %d%%\n", cw_bat->soc);  in cw_bat_work()
452 	dev_dbg(cw_bat->dev, "voltage = %dmV\n", cw_bat->voltage_mv);  in cw_bat_work()
454 	if (cw_bat->battery_changed)  in cw_bat_work()
455 		power_supply_changed(cw_bat->rk_bat);  in cw_bat_work()
456 	cw_bat->battery_changed = false;  in cw_bat_work()
458 	queue_delayed_work(cw_bat->battery_workqueue,  in cw_bat_work()
459 			   &cw_bat->battery_delay_work,  in cw_bat_work()
460 			   msecs_to_jiffies(cw_bat->poll_interval_ms));  in cw_bat_work()
465 	return	cw_bat->time_to_empty > 0 &&  in cw_battery_valid_time_to_empty()
466 		cw_bat->time_to_empty < CW2015_MASK_SOC &&  in cw_battery_valid_time_to_empty()
467 		cw_bat->status == POWER_SUPPLY_STATUS_DISCHARGING;  in cw_battery_valid_time_to_empty()
472 	if (cw_bat->soc < 1)  in cw_get_capacity_leve()
474 	else if (cw_bat->soc <= 20)  in cw_get_capacity_leve()
476 	else if (cw_bat->soc <= 70)  in cw_get_capacity_leve()
478 	else if (cw_bat->soc <= 90)  in cw_get_capacity_leve()
493 		val->intval = cw_bat->soc;  in cw_battery_get_property()
497 		val->intval = cw_get_capacity_leve(cw_bat);  in cw_battery_get_property()
501 		val->intval = cw_bat->status;  in cw_battery_get_property()
505 		val->intval = !!cw_bat->voltage_mv;  in cw_battery_get_property()
509 		val->intval = cw_bat->voltage_mv * 1000;  in cw_battery_get_property()
514 			val->intval = cw_bat->time_to_empty;  in cw_battery_get_property()
516 			val->intval = 0;  in cw_battery_get_property()
520 		val->intval = POWER_SUPPLY_TECHNOLOGY_LION;  in cw_battery_get_property()
524 		val->intval = cw_bat->charge_count;  in cw_battery_get_property()
529 		if (cw_bat->battery.charge_full_design_uah > 0)  in cw_battery_get_property()
530 			val->intval = cw_bat->battery.charge_full_design_uah;  in cw_battery_get_property()
532 			val->intval = 0;  in cw_battery_get_property()
537 		    cw_bat->battery.charge_full_design_uah > 0) {  in cw_battery_get_property()
539 			val->intval = cw_bat->battery.charge_full_design_uah;  in cw_battery_get_property()
540 			val->intval = val->intval * cw_bat->soc / 100;  in cw_battery_get_property()
543 			val->intval = 60 * val->intval / cw_bat->time_to_empty;  in cw_battery_get_property()
545 			val->intval = 0;  in cw_battery_get_property()
571 	.name		= "cw2015-battery",
580 	struct device *dev = cw_bat->dev;  in cw2015_parse_properties()
584 	length = device_property_count_u8(dev, "cellwise,battery-profile");  in cw2015_parse_properties()
586 		dev_warn(cw_bat->dev,  in cw2015_parse_properties()
587 			 "No battery-profile found, using current flash contents\n");  in cw2015_parse_properties()
589 		dev_err(cw_bat->dev, "battery-profile must be %d bytes\n",  in cw2015_parse_properties()
591 		return -EINVAL;  in cw2015_parse_properties()
593 		cw_bat->bat_profile = devm_kzalloc(dev, length, GFP_KERNEL);  in cw2015_parse_properties()
594 		if (!cw_bat->bat_profile)  in cw2015_parse_properties()
595 			return -ENOMEM;  in cw2015_parse_properties()
598 						"cellwise,battery-profile",  in cw2015_parse_properties()
599 						cw_bat->bat_profile,  in cw2015_parse_properties()
605 	cw_bat->dual_cell = device_property_read_bool(dev, "cellwise,dual-cell");  in cw2015_parse_properties()
607 	ret = device_property_read_u32(dev, "cellwise,monitor-interval-ms",  in cw2015_parse_properties()
608 				       &cw_bat->poll_interval_ms);  in cw2015_parse_properties()
610 		dev_dbg(cw_bat->dev, "Using default poll interval\n");  in cw2015_parse_properties()
611 		cw_bat->poll_interval_ms = CW2015_DEFAULT_POLL_INTERVAL_MS;  in cw2015_parse_properties()
622 			CW2015_REG_BATINFO + CW2015_SIZE_BATINFO - 1),
634 			CW2015_REG_BATINFO + CW2015_SIZE_BATINFO - 1),
657 	.max_register = CW2015_REG_BATINFO + CW2015_SIZE_BATINFO - 1,
666 	cw_bat = devm_kzalloc(&client->dev, sizeof(*cw_bat), GFP_KERNEL);  in cw_bat_probe()
668 		return -ENOMEM;  in cw_bat_probe()
671 	cw_bat->dev = &client->dev;  in cw_bat_probe()
672 	cw_bat->soc = 1;  in cw_bat_probe()
676 		dev_err(cw_bat->dev, "Failed to parse cw2015 properties\n");  in cw_bat_probe()
680 	cw_bat->regmap = devm_regmap_init_i2c(client, &cw2015_regmap_config);  in cw_bat_probe()
681 	if (IS_ERR(cw_bat->regmap)) {  in cw_bat_probe()
682 		dev_err(cw_bat->dev, "Failed to allocate regmap: %ld\n",  in cw_bat_probe()
683 			PTR_ERR(cw_bat->regmap));  in cw_bat_probe()
684 		return PTR_ERR(cw_bat->regmap);  in cw_bat_probe()
689 		dev_err(cw_bat->dev, "Init failed: %d\n", ret);  in cw_bat_probe()
694 	psy_cfg.fwnode = dev_fwnode(cw_bat->dev);  in cw_bat_probe()
696 	cw_bat->rk_bat = devm_power_supply_register(&client->dev,  in cw_bat_probe()
699 	if (IS_ERR(cw_bat->rk_bat)) {  in cw_bat_probe()
701 		dev_err_probe(&client->dev, PTR_ERR(cw_bat->rk_bat),  in cw_bat_probe()
703 		return PTR_ERR(cw_bat->rk_bat);  in cw_bat_probe()
706 	ret = power_supply_get_battery_info(cw_bat->rk_bat, &cw_bat->battery);  in cw_bat_probe()
708 		dev_warn(cw_bat->dev,  in cw_bat_probe()
709 			 "No monitored battery, some properties will be missing\n");  in cw_bat_probe()
712 	cw_bat->battery_workqueue = create_singlethread_workqueue("rk_battery");  in cw_bat_probe()
713 	INIT_DELAYED_WORK(&cw_bat->battery_delay_work, cw_bat_work);  in cw_bat_probe()
714 	queue_delayed_work(cw_bat->battery_workqueue,  in cw_bat_probe()
715 			   &cw_bat->battery_delay_work, msecs_to_jiffies(10));  in cw_bat_probe()
724 	cancel_delayed_work_sync(&cw_bat->battery_delay_work);  in cw_bat_suspend()
733 	queue_delayed_work(cw_bat->battery_workqueue,  in cw_bat_resume()
734 			   &cw_bat->battery_delay_work, 0);  in cw_bat_resume()
744 	cancel_delayed_work_sync(&cw_bat->battery_delay_work);  in cw_bat_remove()
745 	power_supply_put_battery_info(cw_bat->rk_bat, &cw_bat->battery);  in cw_bat_remove()
773 MODULE_AUTHOR("xhc<xhc@rock-chips.com>");
775 MODULE_DESCRIPTION("cw2015/cw2013 battery driver");