1 // SPDX-License-Identifier: GPL-2.0
7  * Author: Xu Shengfei <xsf@rock-chips.com>
28 			pr_info("FG_CW221X: %s-%d:" fmt, __func__, __LINE__, ##arg);	\
31 #define CW_PROPERTIES "cw221X-bat"
141 		dev_err(&client->dev, "IIC error %d\n", ret);  in cw_read()
155 		dev_err(&client->dev, "IIC error %d\n", ret);  in cw_write()
172 		dev_err(&client->dev, "IIC error %d\n", ret);  in cw_read_word()
178 		dev_err(&client->dev, "IIC error %d\n", ret);  in cw_read_word()
185 			dev_err(&client->dev, "IIC error %d\n", ret);  in cw_read_word()
196 /* CW221X iic write profile function */
205 			dev_err(&client->dev, "IIC error %d\n", ret);  in cw_write_profile()
222  * operation since it is a brand-new calculation based on the latest battery status.
230 	ret = cw_write(cw_bat->client, REG_MODE_CONFIG, &reg_val);  in cw221X_active()
236 	ret = cw_write(cw_bat->client, REG_MODE_CONFIG, &reg_val);  in cw221X_active()
253  * it is a brand-new calculation based on the latest battery status.
261 	ret = cw_write(cw_bat->client, REG_MODE_CONFIG, &reg_val);  in cw221X_sleep()
267 	ret = cw_write(cw_bat->client, REG_MODE_CONFIG, &reg_val);  in cw221X_sleep()
276  * The 0x00 register is an UNSIGNED 8bit read-only register. Its value is
285 	ret = cw_read(cw_bat->client, REG_CHIP_ID, &reg_val);  in cw_get_chip_id()
291 	cw_bat->chip_id = chip_id;  in cw_get_chip_id()
297  * The VCELL register(0x02 0x03) is an UNSIGNED 14bit read-only register that
298  * updates the battery voltage continuously. Battery voltage is measured between
300  * sigma-delta A/D converter is used and the voltage resolution is 312.5uV. (0.3125mV is *5/16)
308 	ret = cw_read_word(cw_bat->client, REG_VCELL_H, reg_val);  in cw_get_voltage()
314 	cw_bat->voltage = voltage;  in cw_get_voltage()
320  * The SOC register(0x04 0x05) is an UNSIGNED 16bit read-only register that indicates
321  * the SOC of the battery. The SOC shows in % format, which means how much percent of
322  * the battery's total available capacity is remaining in the battery now. The SOC can
323  * intrinsically adjust itself to cater to the change of battery status,
339 	ret = cw_read_word(cw_bat->client, REG_SOC_INT, reg_val);  in cw_get_capacity()
350 	cw_bat->ic_soc_h = soc_h;  in cw_get_capacity()
351 	cw_bat->ic_soc_l = soc_l;  in cw_get_capacity()
352 	cw_bat->ui_soc = ui_soc;  in cw_get_capacity()
359  * It reports the real-time battery temperature
360  * measured at TS pin. The scope is from -40 to 87.5 degrees Celsius,
361  * LSB is 0.5 degree Celsius. TEMP(C) = - 40 + Value(0x06 Reg) / 2
369 	ret = cw_read(cw_bat->client, REG_TEMP, &reg_val);  in cw_get_temp()
373 	temp = (int)reg_val * 10 / 2 - 400;  in cw_get_temp()
374 	cw_bat->temp = temp;  in cw_get_temp()
386 		dir = -1;  in get_complement_code()
387 		raw_code =  (0xFFFF - raw_code) + 1;  in get_complement_code()
403  * the resolution and the full-scale range of the current readings. The LSB of 0x0F
415 	ret = cw_read_word(cw_bat->client, REG_CURRENT_H, reg_val);  in cw_get_current()
422 	if (((cw_bat->fw_version & CW2215_MARK) != 0) || ((cw_bat->fw_version & CW2217_MARK) != 0))  in cw_get_current()
424 	else if ((cw_bat->fw_version != 0) && ((cw_bat->fw_version & 0xC0) == CW2218_MARK))  in cw_get_current()
427 		cw_bat->cw_current = 0;  in cw_get_current()
428 		dev_err(cw_bat->dev, "error! cw221x firmware read error!\n");  in cw_get_current()
431 	cw_bat->cw_current = cw_current;  in cw_get_current()
437  * CYCLECNT is an UNSIGNED 16bit register(0xA4 0xA5) that counts cycle life of the battery.
446 	ret = cw_read_word(cw_bat->client, REG_CYCLE_H, reg_val);  in cw_get_cycle_count()
451 	cw_bat->cycle = cycle / 16;  in cw_get_cycle_count()
458  * battery aging by tracking battery internal impedance increment. When the device enters
468 	ret = cw_read(cw_bat->client, REG_SOH, &reg_val);  in cw_get_soh()
473 	cw_bat->soh = soh;  in cw_get_soh()
491 	ret = cw_read(cw_bat->client, REG_FW_VERSION, &reg_val);  in cw_get_fw_version()
496 	cw_bat->fw_version = fw_version;  in cw_get_fw_version()
512 		  cw_bat->voltage, cw_bat->cw_current, cw_bat->ui_soc, cw_bat->temp);  in cw_update_data()
534 		  cw_bat->chip_id, cw_bat->voltage, cw_bat->cw_current,  in cw_init_data()
535 		  cw_bat->ui_soc, cw_bat->temp, cw_bat->fw_version);  in cw_init_data()
542 	struct device *dev = cw_bat->dev;  in cw221x_parse_properties()
546 	length = device_property_count_u8(dev, "cellwise,battery-profile");  in cw221x_parse_properties()
548 		dev_warn(cw_bat->dev,  in cw221x_parse_properties()
549 			 "No battery-profile found, using current flash contents\n");  in cw221x_parse_properties()
551 		dev_err(cw_bat->dev, "battery-profile must be %d bytes\n",  in cw221x_parse_properties()
553 		return -EINVAL;  in cw221x_parse_properties()
556 	cw_bat->bat_profile = devm_kzalloc(dev, length, GFP_KERNEL);  in cw221x_parse_properties()
557 	if (!cw_bat->bat_profile)  in cw221x_parse_properties()
558 		return -ENOMEM;  in cw221x_parse_properties()
561 					    "cellwise,battery-profile",  in cw221x_parse_properties()
562 					    cw_bat->bat_profile,  in cw221x_parse_properties()
574 		/* update new battery info */  in cw_config_profile_init()
575 		cw_bat->bat_profile = config_profile_info;  in cw_config_profile_init()
576 		cw_printk("the driver profile:\n");  in cw_config_profile_init()
580 		cw_printk("[%d]: 0x%x\n", i, cw_bat->bat_profile[i]);  in cw_config_profile_init()
583 /*CW221X update profile function, Often called during initialization*/
594 	/* update new battery info */  in cw_config_start_ic()
595 	ret = cw_write_profile(cw_bat->client, cw_bat->bat_profile);  in cw_config_start_ic()
599 	cw_printk("the driver profile:\n");  in cw_config_start_ic()
601 		cw_printk("[%d]: 0x%x\n", i, cw_bat->bat_profile[i]);  in cw_config_start_ic()
605 	ret = cw_write(cw_bat->client, REG_SOC_ALERT, &reg_val);  in cw_config_start_ic()
611 	ret = cw_write(cw_bat->client, REG_GPIO_CONFIG, &reg_val);  in cw_config_start_ic()
621 		cw_read(cw_bat->client, REG_IC_STATE, &reg_val);  in cw_config_start_ic()
627 			return -1;  in cw_config_start_ic()
636  * Determine whether the profile needs to be updated
645 	ret = cw_read(cw_bat->client, REG_MODE_CONFIG, &reg_val);  in cw221X_get_state()
651 	ret = cw_read(cw_bat->client, REG_SOC_ALERT, &reg_val);  in cw221X_get_state()
658 		ret = cw_read(cw_bat->client, (REG_BAT_PROFILE + i), &reg_val);  in cw221X_get_state()
663 		if (cw_bat->bat_profile[i] != reg_val)  in cw221X_get_state()
679 		dev_err(cw_bat->dev, "iic read write error");  in cw_init()
682 	if (cw_bat->chip_id != IC_VCHIP_ID) {  in cw_init()
683 		dev_err(cw_bat->dev, "not cw221X\n");  in cw_init()
684 		return -1;  in cw_init()
689 		dev_err(cw_bat->dev, "iic read write error");  in cw_init()
694 		cw_printk("need update profile\n");  in cw_init()
700 		cw_printk("not need update profile\n");  in cw_init()
722 		dev_err(cw_bat->dev, "i2c read error when update data");  in cw_bat_work()
723 	if (cw_bat->ui_soc != soc) {  in cw_bat_work()
724 		soc = cw_bat->ui_soc;  in cw_bat_work()
725 		power_supply_changed(cw_bat->cw_bat);  in cw_bat_work()
727 	queue_delayed_work(cw_bat->cwfg_workqueue,  in cw_bat_work()
728 			   &cw_bat->battery_delay_work,  in cw_bat_work()
741 		ret = -EINVAL;  in cw_battery_set_property()
757 		val->intval = cw_bat->cycle;  in cw_battery_get_property()
760 		val->intval = cw_bat->ui_soc;  in cw_battery_get_property()
763 		if ((cw_bat->ui_soc < 1) && (!power_supply_is_system_supplied()))  in cw_battery_get_property()
764 			val->intval = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;  in cw_battery_get_property()
765 		else if (cw_bat->ui_soc <= 20)  in cw_battery_get_property()
766 			val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW;  in cw_battery_get_property()
767 		else if (cw_bat->ui_soc <= 70)  in cw_battery_get_property()
768 			val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;  in cw_battery_get_property()
769 		else if (cw_bat->ui_soc <= 90)  in cw_battery_get_property()
770 			val->intval = POWER_SUPPLY_CAPACITY_LEVEL_HIGH;  in cw_battery_get_property()
772 			val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL;  in cw_battery_get_property()
775 		if (cw_bat->ui_soc == 100 * 1000)  in cw_battery_get_property()
776 			val->intval = POWER_SUPPLY_STATUS_FULL;  in cw_battery_get_property()
779 				val->intval = POWER_SUPPLY_STATUS_CHARGING;  in cw_battery_get_property()
781 				val->intval = POWER_SUPPLY_STATUS_DISCHARGING;  in cw_battery_get_property()
786 		val->intval = 10 * 1000 * 1000;/* uAh */  in cw_battery_get_property()
789 		val->intval = POWER_SUPPLY_HEALTH_GOOD;  in cw_battery_get_property()
792 		val->intval = (cw_bat->voltage <= 0) ? 0 : 1;  in cw_battery_get_property()
796 		val->intval = cw_bat->voltage * CW_VOL_UNIT;  in cw_battery_get_property()
800 		val->intval = cw_bat->cw_current * 1000; /* uA */  in cw_battery_get_property()
803 		val->intval = POWER_SUPPLY_TECHNOLOGY_LION;  in cw_battery_get_property()
806 		val->intval = cw_bat->temp;  in cw_battery_get_property()
809 		ret = -EINVAL;  in cw_battery_get_property()
838 	cw_bat = devm_kzalloc(&client->dev, sizeof(*cw_bat), GFP_KERNEL);  in cw221X_probe()
840 		return -ENOMEM;  in cw221X_probe()
843 	cw_bat->client = client;  in cw221X_probe()
844 	cw_bat->dev = &client->dev;  in cw221X_probe()
846 	dev_dbg(cw_bat->dev, "cw221X driver versions-%d\n", 20220830);  in cw221X_probe()
854 		dev_err(cw_bat->dev, "cw221X init fail!\n");  in cw221X_probe()
860 		dev_err(cw_bat->dev, "cw221X init data fail!\n");  in cw221X_probe()
864 	psy_desc = devm_kzalloc(&client->dev, sizeof(*psy_desc), GFP_KERNEL);  in cw221X_probe()
866 		return -ENOMEM;  in cw221X_probe()
868 	psy_desc->name = CW_PROPERTIES;  in cw221X_probe()
869 	psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;  in cw221X_probe()
870 	psy_desc->properties = cw_battery_properties;  in cw221X_probe()
871 	psy_desc->num_properties = ARRAY_SIZE(cw_battery_properties);  in cw221X_probe()
872 	psy_desc->get_property = cw_battery_get_property;  in cw221X_probe()
873 	psy_desc->set_property = cw_battery_set_property;  in cw221X_probe()
874 	cw_bat->cw_bat = devm_power_supply_register(&client->dev, psy_desc, &psy_cfg);  in cw221X_probe()
875 	if (IS_ERR(cw_bat->cw_bat)) {  in cw221X_probe()
876 		ret = PTR_ERR(cw_bat->cw_bat);  in cw221X_probe()
877 		dev_err(cw_bat->dev, "failed to register battery: %d\n", ret);  in cw221X_probe()
881 	cw_bat->cwfg_workqueue = create_singlethread_workqueue("cwfg_gauge");  in cw221X_probe()
882 	INIT_DELAYED_WORK(&cw_bat->battery_delay_work, cw_bat_work);  in cw221X_probe()
883 	queue_delayed_work(cw_bat->cwfg_workqueue,  in cw221X_probe()
884 			   &cw_bat->battery_delay_work,  in cw221X_probe()
896 	cancel_delayed_work_sync(&cw_bat->battery_delay_work);  in cw221X_remove()
897 	destroy_workqueue(cw_bat->cwfg_workqueue);  in cw221X_remove()
907 	cancel_delayed_work(&cw_bat->battery_delay_work);  in cw_bat_suspend()
916 	queue_delayed_work(cw_bat->cwfg_workqueue,  in cw_bat_resume()
917 			   &cw_bat->battery_delay_work,  in cw_bat_resume()
958 MODULE_AUTHOR("Xu Shengfei <xsf@rock-chips.com>");