89 	int (*read)(struct bq27x00_device_info *di, u8 reg, bool single);
206 static inline int bq27x00_read(struct bq27x00_device_info *di, u8 reg,  in bq27x00_read()  argument
209 	if (di->chip == BQ27425)  in bq27x00_read()
210 		return di->bus.read(di, reg - BQ27425_REG_OFFSET, single);  in bq27x00_read()
211 	return di->bus.read(di, reg, single);  in bq27x00_read()
219 static bool bq27xxx_is_chip_version_higher(struct bq27x00_device_info *di)  in bq27xxx_is_chip_version_higher()  argument
221 	if (di->chip == BQ27425 || di->chip == BQ27500 || di->chip == BQ27742  in bq27xxx_is_chip_version_higher()
222 	    || di->chip == BQ27510)  in bq27xxx_is_chip_version_higher()
231 static int bq27x00_battery_read_rsoc(struct bq27x00_device_info *di)  in bq27x00_battery_read_rsoc()  argument
235 	if (di->chip == BQ27500 || di->chip == BQ27742)  in bq27x00_battery_read_rsoc()
236 		rsoc = bq27x00_read(di, BQ27500_REG_SOC, false);  in bq27x00_battery_read_rsoc()
237 	else if (di->chip == BQ27510)  in bq27x00_battery_read_rsoc()
238 		rsoc = bq27x00_read(di, BQ27510_REG_SOC, false);  in bq27x00_battery_read_rsoc()
239 	else if (di->chip == BQ27425)  in bq27x00_battery_read_rsoc()
240 		rsoc = bq27x00_read(di, BQ27425_REG_SOC, false);  in bq27x00_battery_read_rsoc()
242 		rsoc = bq27x00_read(di, BQ27000_REG_RSOC, true);  in bq27x00_battery_read_rsoc()
245 		dev_dbg(di->dev, "error reading relative State-of-Charge\n");  in bq27x00_battery_read_rsoc()
254 static int bq27x00_battery_read_charge(struct bq27x00_device_info *di, u8 reg)  in bq27x00_battery_read_charge()  argument
258 	charge = bq27x00_read(di, reg, false);  in bq27x00_battery_read_charge()
260 		dev_dbg(di->dev, "error reading charge register %02x: %d\n",  in bq27x00_battery_read_charge()
265 	if (bq27xxx_is_chip_version_higher(di))  in bq27x00_battery_read_charge()
277 static inline int bq27x00_battery_read_nac(struct bq27x00_device_info *di)  in bq27x00_battery_read_nac()  argument
280 	bool is_bq27500 = di->chip == BQ27500;  in bq27x00_battery_read_nac()
281 	bool is_bq27742 = di->chip == BQ27742;  in bq27x00_battery_read_nac()
282 	bool is_higher = bq27xxx_is_chip_version_higher(di);  in bq27x00_battery_read_nac()
285 	flags = bq27x00_read(di, BQ27x00_REG_FLAGS, flags_1b);  in bq27x00_battery_read_nac()
289 	return bq27x00_battery_read_charge(di, BQ27x00_REG_NAC);  in bq27x00_battery_read_nac()
296 static inline int bq27x00_battery_read_lmd(struct bq27x00_device_info *di)  in bq27x00_battery_read_lmd()  argument
298 	return bq27x00_battery_read_charge(di, BQ27x00_REG_LMD);  in bq27x00_battery_read_lmd()
305 static int bq27x00_battery_read_ilmd(struct bq27x00_device_info *di)  in bq27x00_battery_read_ilmd()  argument
309 	if (bq27xxx_is_chip_version_higher(di)) {  in bq27x00_battery_read_ilmd()
310 		if (di->chip == BQ27425)  in bq27x00_battery_read_ilmd()
311 			ilmd = bq27x00_read(di, BQ27425_REG_DCAP, false);  in bq27x00_battery_read_ilmd()
312 		else if (di->chip == BQ27510)  in bq27x00_battery_read_ilmd()
313 			ilmd = bq27x00_read(di, BQ27510_REG_DCAP, false);  in bq27x00_battery_read_ilmd()
315 			ilmd = bq27x00_read(di, BQ27500_REG_DCAP, false);  in bq27x00_battery_read_ilmd()
317 		ilmd = bq27x00_read(di, BQ27000_REG_ILMD, true);  in bq27x00_battery_read_ilmd()
320 		dev_dbg(di->dev, "error reading initial last measured discharge\n");  in bq27x00_battery_read_ilmd()
324 	if (bq27xxx_is_chip_version_higher(di))  in bq27x00_battery_read_ilmd()
336 static int bq27x00_battery_read_energy(struct bq27x00_device_info *di)  in bq27x00_battery_read_energy()  argument
340 	ae = bq27x00_read(di, BQ27x00_REG_AE, false);  in bq27x00_battery_read_energy()
342 		dev_dbg(di->dev, "error reading available energy\n");  in bq27x00_battery_read_energy()
346 	if (di->chip == BQ27500)  in bq27x00_battery_read_energy()
358 static int bq27x00_battery_read_temperature(struct bq27x00_device_info *di)  in bq27x00_battery_read_temperature()  argument
362 	temp = bq27x00_read(di, BQ27x00_REG_TEMP, false);  in bq27x00_battery_read_temperature()
364 		dev_err(di->dev, "error reading temperature\n");  in bq27x00_battery_read_temperature()
368 	if (!bq27xxx_is_chip_version_higher(di))  in bq27x00_battery_read_temperature()
378 static int bq27x00_battery_read_cyct(struct bq27x00_device_info *di)  in bq27x00_battery_read_cyct()  argument
382 	if (di->chip == BQ27510)  in bq27x00_battery_read_cyct()
383 		cyct = bq27x00_read(di, BQ27510_REG_CYCT, false);  in bq27x00_battery_read_cyct()
385 		cyct = bq27x00_read(di, BQ27x00_REG_CYCT, false);  in bq27x00_battery_read_cyct()
387 		dev_err(di->dev, "error reading cycle count total\n");  in bq27x00_battery_read_cyct()
396 static int bq27x00_battery_read_time(struct bq27x00_device_info *di, u8 reg)  in bq27x00_battery_read_time()  argument
400 	tval = bq27x00_read(di, reg, false);  in bq27x00_battery_read_time()
402 		dev_dbg(di->dev, "error reading time register %02x: %d\n",  in bq27x00_battery_read_time()
417 static int bq27x00_battery_read_pwr_avg(struct bq27x00_device_info *di, u8 reg)  in bq27x00_battery_read_pwr_avg()  argument
421 	tval = bq27x00_read(di, reg, false);  in bq27x00_battery_read_pwr_avg()
423 		dev_err(di->dev, "error reading power avg rgister  %02x: %d\n",  in bq27x00_battery_read_pwr_avg()
428 	if (di->chip == BQ27500)  in bq27x00_battery_read_pwr_avg()
438 static int bq27x00_battery_read_health(struct bq27x00_device_info *di)  in bq27x00_battery_read_health()  argument
442 	tval = bq27x00_read(di, BQ27x00_REG_FLAGS, false);  in bq27x00_battery_read_health()
444 		dev_err(di->dev, "error reading flag register:%d\n", tval);  in bq27x00_battery_read_health()
448 	if ((di->chip == BQ27500)) {  in bq27x00_battery_read_health()
456 	} else if (di->chip == BQ27510) {  in bq27x00_battery_read_health()
471 static void bq27x00_update(struct bq27x00_device_info *di)  in bq27x00_update()  argument
474 	bool is_bq27500 = di->chip == BQ27500;  in bq27x00_update()
475 	bool is_bq27510 = di->chip == BQ27510;  in bq27x00_update()
476 	bool is_bq27425 = di->chip == BQ27425;  in bq27x00_update()
477 	bool is_bq27742 = di->chip == BQ27742;  in bq27x00_update()
480 	cache.flags = bq27x00_read(di, BQ27x00_REG_FLAGS, flags_1b);  in bq27x00_update()
487 			dev_info(di->dev, "battery is not calibrated! ignoring capacity values\n");  in bq27x00_update()
496 			cache.capacity = bq27x00_battery_read_rsoc(di);  in bq27x00_update()
499 					bq27x00_battery_read_time(di,  in bq27x00_update()
502 				cache.energy = bq27x00_battery_read_energy(di);  in bq27x00_update()
504 					bq27x00_battery_read_time(di,  in bq27x00_update()
507 					bq27x00_battery_read_time(di,  in bq27x00_update()
510 					bq27x00_battery_read_time(di,  in bq27x00_update()
513 			cache.charge_full = bq27x00_battery_read_lmd(di);  in bq27x00_update()
514 			cache.health = bq27x00_battery_read_health(di);  in bq27x00_update()
516 		cache.temperature = bq27x00_battery_read_temperature(di);  in bq27x00_update()
518 			cache.cycle_count = bq27x00_battery_read_cyct(di);  in bq27x00_update()
521 				bq27x00_battery_read_pwr_avg(di,  in bq27x00_update()
525 				bq27x00_battery_read_pwr_avg(di,  in bq27x00_update()
529 		if (di->charge_design_full <= 0)  in bq27x00_update()
530 			di->charge_design_full = bq27x00_battery_read_ilmd(di);  in bq27x00_update()
533 	if (di->cache.capacity != cache.capacity)  in bq27x00_update()
534 		power_supply_changed(di->bat);  in bq27x00_update()
536 	if (memcmp(&di->cache, &cache, sizeof(cache)) != 0)  in bq27x00_update()
537 		di->cache = cache;  in bq27x00_update()
539 	di->last_update = jiffies;  in bq27x00_update()
544 	struct bq27x00_device_info *di =  in bq27x00_battery_poll()  local
547 	bq27x00_update(di);  in bq27x00_battery_poll()
551 		set_timer_slack(&di->work.timer, poll_interval * HZ / 4);  in bq27x00_battery_poll()
552 		schedule_delayed_work(&di->work, poll_interval * HZ);  in bq27x00_battery_poll()
561 static int bq27x00_battery_current(struct bq27x00_device_info *di,  in bq27x00_battery_current()  argument
567 	curr = bq27x00_read(di, BQ27x00_REG_AI, false);  in bq27x00_battery_current()
569 		dev_err(di->dev, "error reading current\n");  in bq27x00_battery_current()
573 	if (bq27xxx_is_chip_version_higher(di)) {  in bq27x00_battery_current()
577 		flags = bq27x00_read(di, BQ27x00_REG_FLAGS, false);  in bq27x00_battery_current()
579 			dev_dbg(di->dev, "negative current!\n");  in bq27x00_battery_current()
589 static int bq27x00_battery_status(struct bq27x00_device_info *di,  in bq27x00_battery_status()  argument
594 	if (bq27xxx_is_chip_version_higher(di)) {  in bq27x00_battery_status()
595 		if (di->cache.flags & BQ27500_FLAG_FC)  in bq27x00_battery_status()
597 		else if (di->cache.flags & BQ27500_FLAG_DSC)  in bq27x00_battery_status()
602 		if (di->cache.flags & BQ27000_FLAG_FC)  in bq27x00_battery_status()
604 		else if (di->cache.flags & BQ27000_FLAG_CHGS)  in bq27x00_battery_status()
606 		else if (power_supply_am_i_supplied(di->bat))  in bq27x00_battery_status()
617 static int bq27x00_battery_capacity_level(struct bq27x00_device_info *di,  in bq27x00_battery_capacity_level()  argument
622 	if (bq27xxx_is_chip_version_higher(di)) {  in bq27x00_battery_capacity_level()
623 		if (di->cache.flags & BQ27500_FLAG_FC)  in bq27x00_battery_capacity_level()
625 		else if (di->cache.flags & BQ27500_FLAG_SOC1)  in bq27x00_battery_capacity_level()
627 		else if (di->cache.flags & BQ27500_FLAG_SOCF)  in bq27x00_battery_capacity_level()
632 		if (di->cache.flags & BQ27000_FLAG_FC)  in bq27x00_battery_capacity_level()
634 		else if (di->cache.flags & BQ27000_FLAG_EDV1)  in bq27x00_battery_capacity_level()
636 		else if (di->cache.flags & BQ27000_FLAG_EDVF)  in bq27x00_battery_capacity_level()
651 static int bq27x00_battery_voltage(struct bq27x00_device_info *di,  in bq27x00_battery_voltage()  argument
656 	volt = bq27x00_read(di, BQ27x00_REG_VOLT, false);  in bq27x00_battery_voltage()
658 		dev_err(di->dev, "error reading voltage\n");  in bq27x00_battery_voltage()
683 	struct bq27x00_device_info *di = power_supply_get_drvdata(psy);  in bq27x00_battery_get_property()  local
685 	mutex_lock(&di->lock);  in bq27x00_battery_get_property()
686 	if (time_is_before_jiffies(di->last_update + 5 * HZ)) {  in bq27x00_battery_get_property()
687 		cancel_delayed_work_sync(&di->work);  in bq27x00_battery_get_property()
688 		bq27x00_battery_poll(&di->work.work);  in bq27x00_battery_get_property()
690 	mutex_unlock(&di->lock);  in bq27x00_battery_get_property()
692 	if (psp != POWER_SUPPLY_PROP_PRESENT && di->cache.flags < 0)  in bq27x00_battery_get_property()
697 		ret = bq27x00_battery_status(di, val);  in bq27x00_battery_get_property()
700 		ret = bq27x00_battery_voltage(di, val);  in bq27x00_battery_get_property()
703 		val->intval = di->cache.flags < 0 ? 0 : 1;  in bq27x00_battery_get_property()
706 		ret = bq27x00_battery_current(di, val);  in bq27x00_battery_get_property()
709 		ret = bq27x00_simple_value(di->cache.capacity, val);  in bq27x00_battery_get_property()
712 		ret = bq27x00_battery_capacity_level(di, val);  in bq27x00_battery_get_property()
715 		ret = bq27x00_simple_value(di->cache.temperature, val);  in bq27x00_battery_get_property()
720 		ret = bq27x00_simple_value(di->cache.time_to_empty, val);  in bq27x00_battery_get_property()
723 		ret = bq27x00_simple_value(di->cache.time_to_empty_avg, val);  in bq27x00_battery_get_property()
726 		ret = bq27x00_simple_value(di->cache.time_to_full, val);  in bq27x00_battery_get_property()
732 		ret = bq27x00_simple_value(bq27x00_battery_read_nac(di), val);  in bq27x00_battery_get_property()
735 		ret = bq27x00_simple_value(di->cache.charge_full, val);  in bq27x00_battery_get_property()
738 		ret = bq27x00_simple_value(di->charge_design_full, val);  in bq27x00_battery_get_property()
741 		ret = bq27x00_simple_value(di->cache.cycle_count, val);  in bq27x00_battery_get_property()
744 		ret = bq27x00_simple_value(di->cache.energy, val);  in bq27x00_battery_get_property()
747 		ret = bq27x00_simple_value(di->cache.power_avg, val);  in bq27x00_battery_get_property()
750 		ret = bq27x00_simple_value(di->cache.health, val);  in bq27x00_battery_get_property()
761 	struct bq27x00_device_info *di = power_supply_get_drvdata(psy);  in bq27x00_external_power_changed()  local
763 	cancel_delayed_work_sync(&di->work);  in bq27x00_external_power_changed()
764 	schedule_delayed_work(&di->work, 0);  in bq27x00_external_power_changed()
767 static int bq27x00_powersupply_init(struct bq27x00_device_info *di,  in bq27x00_powersupply_init()  argument
772 	struct power_supply_config psy_cfg = { .drv_data = di, };  in bq27x00_powersupply_init()
774 	psy_desc = devm_kzalloc(di->dev, sizeof(*psy_desc), GFP_KERNEL);  in bq27x00_powersupply_init()
780 	if (di->chip == BQ27425) {  in bq27x00_powersupply_init()
783 	} else if (di->chip == BQ27742) {  in bq27x00_powersupply_init()
786 	} else if (di->chip == BQ27510) {  in bq27x00_powersupply_init()
796 	INIT_DELAYED_WORK(&di->work, bq27x00_battery_poll);  in bq27x00_powersupply_init()
797 	mutex_init(&di->lock);  in bq27x00_powersupply_init()
799 	di->bat = power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg);  in bq27x00_powersupply_init()
800 	if (IS_ERR(di->bat)) {  in bq27x00_powersupply_init()
801 		ret = PTR_ERR(di->bat);  in bq27x00_powersupply_init()
802 		dev_err(di->dev, "failed to register battery: %d\n", ret);  in bq27x00_powersupply_init()
806 	dev_info(di->dev, "support ver. %s enabled\n", DRIVER_VERSION);  in bq27x00_powersupply_init()
808 	bq27x00_update(di);  in bq27x00_powersupply_init()
813 static void bq27x00_powersupply_unregister(struct bq27x00_device_info *di)  in bq27x00_powersupply_unregister()  argument
823 	cancel_delayed_work_sync(&di->work);  in bq27x00_powersupply_unregister()
825 	power_supply_unregister(di->bat);  in bq27x00_powersupply_unregister()
827 	mutex_destroy(&di->lock);  in bq27x00_powersupply_unregister()
840 static int bq27x00_read_i2c(struct bq27x00_device_info *di, u8 reg, bool single)  in bq27x00_read_i2c()  argument
842 	struct i2c_client *client = to_i2c_client(di->dev);  in bq27x00_read_i2c()
878 	struct bq27x00_device_info *di;  in bq27x00_battery_probe()  local
896 	di = devm_kzalloc(&client->dev, sizeof(*di), GFP_KERNEL);  in bq27x00_battery_probe()
897 	if (!di) {  in bq27x00_battery_probe()
903 	di->id = num;  in bq27x00_battery_probe()
904 	di->dev = &client->dev;  in bq27x00_battery_probe()
905 	di->chip = id->driver_data;  in bq27x00_battery_probe()
906 	di->bus.read = &bq27x00_read_i2c;  in bq27x00_battery_probe()
908 	retval = bq27x00_powersupply_init(di, name);  in bq27x00_battery_probe()
912 	i2c_set_clientdata(client, di);  in bq27x00_battery_probe()
926 	struct bq27x00_device_info *di = i2c_get_clientdata(client);  in bq27x00_battery_remove()  local
928 	bq27x00_powersupply_unregister(di);  in bq27x00_battery_remove()
931 	idr_remove(&battery_id, di->id);  in bq27x00_battery_remove()
980 static int bq27000_read_platform(struct bq27x00_device_info *di, u8 reg,  in bq27000_read_platform()  argument
983 	struct device *dev = di->dev;  in bq27000_read_platform()
1016 	struct bq27x00_device_info *di;  in bq27000_battery_probe()  local
1030 	di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);  in bq27000_battery_probe()
1031 	if (!di) {  in bq27000_battery_probe()
1036 	platform_set_drvdata(pdev, di);  in bq27000_battery_probe()
1038 	di->dev = &pdev->dev;  in bq27000_battery_probe()
1039 	di->chip = BQ27000;  in bq27000_battery_probe()
1042 	di->bus.read = &bq27000_read_platform;  in bq27000_battery_probe()
1044 	return bq27x00_powersupply_init(di, name);  in bq27000_battery_probe()
1049 	struct bq27x00_device_info *di = platform_get_drvdata(pdev);  in bq27000_battery_remove()  local
1051 	bq27x00_powersupply_unregister(di);  in bq27000_battery_remove()