3  * Battery charger driver for Dialog Semiconductor DA9030
105 	/* charger status */
139 	struct da9030_charger *charger = s->private;  in bat_debug_show()  local
141 	seq_printf(s, "charger is %s\n", charger->is_on ? "on" : "off");  in bat_debug_show()
142 	if (charger->chdet) {  in bat_debug_show()
144 			   charger->mA, charger->mV);  in bat_debug_show()
148 		   charger->adc.vbat_res,  in bat_debug_show()
149 		   da9030_reg_to_mV(charger->adc.vbat_res));  in bat_debug_show()
151 		   charger->adc.vbatmin_res,  in bat_debug_show()
152 		   da9030_reg_to_mV(charger->adc.vbatmin_res));  in bat_debug_show()
154 		   charger->adc.vbatmintxon,  in bat_debug_show()
155 		   da9030_reg_to_mV(charger->adc.vbatmintxon));  in bat_debug_show()
157 		   charger->adc.ichmax_res,  in bat_debug_show()
158 		   da9030_reg_to_mV(charger->adc.ichmax_res));  in bat_debug_show()
160 		   charger->adc.ichmin_res,  in bat_debug_show()
161 		   da9030_reg_to_mA(charger->adc.ichmin_res));  in bat_debug_show()
163 		   charger->adc.ichaverage_res,  in bat_debug_show()
164 		   da9030_reg_to_mA(charger->adc.ichaverage_res));  in bat_debug_show()
166 		   charger->adc.vchmax_res,  in bat_debug_show()
167 		   da9030_reg_to_mA(charger->adc.vchmax_res));  in bat_debug_show()
169 		   charger->adc.vchmin_res,  in bat_debug_show()
170 		   da9030_reg_to_mV(charger->adc.vchmin_res));  in bat_debug_show()
177 static struct dentry *da9030_bat_create_debugfs(struct da9030_charger *charger)  in da9030_bat_create_debugfs()  argument
179 	charger->debug_file = debugfs_create_file("charger", 0666, NULL,  in da9030_bat_create_debugfs()
180 						  charger, &bat_debug_fops);  in da9030_bat_create_debugfs()
181 	return charger->debug_file;  in da9030_bat_create_debugfs()
184 static void da9030_bat_remove_debugfs(struct da9030_charger *charger)  in da9030_bat_remove_debugfs()  argument
186 	debugfs_remove(charger->debug_file);  in da9030_bat_remove_debugfs()
189 static inline struct dentry *da9030_bat_create_debugfs(struct da9030_charger *charger)  in da9030_bat_create_debugfs()  argument
193 static inline void da9030_bat_remove_debugfs(struct da9030_charger *charger)  in da9030_bat_remove_debugfs()  argument
198 static inline void da9030_read_adc(struct da9030_charger *charger,  in da9030_read_adc()  argument
201 	da903x_reads(charger->master, DA9030_VBAT_RES,  in da9030_read_adc()
205 static void da9030_charger_update_state(struct da9030_charger *charger)  in da9030_charger_update_state()  argument
209 	da903x_read(charger->master, DA9030_CHARGE_CONTROL, &val);  in da9030_charger_update_state()
210 	charger->is_on = (val & DA9030_CHRG_CHARGER_ENABLE) ? 1 : 0;  in da9030_charger_update_state()
211 	charger->mA = ((val >> 3) & 0xf) * 100;  in da9030_charger_update_state()
212 	charger->mV = (val & 0x7) * 50 + 4000;  in da9030_charger_update_state()
214 	da9030_read_adc(charger, &charger->adc);  in da9030_charger_update_state()
215 	da903x_read(charger->master, DA9030_FAULT_LOG, &charger->fault);  in da9030_charger_update_state()
216 	charger->chdet = da903x_query_status(charger->master,  in da9030_charger_update_state()
220 static void da9030_set_charge(struct da9030_charger *charger, int on)  in da9030_set_charge()  argument
226 		val |= (charger->charge_milliamp / 100) << 3;  in da9030_set_charge()
227 		val |= (charger->charge_millivolt - 4000) / 50;  in da9030_set_charge()
228 		charger->is_on = 1;  in da9030_set_charge()
231 		charger->is_on = 0;  in da9030_set_charge()
234 	da903x_write(charger->master, DA9030_CHARGE_CONTROL, val);  in da9030_set_charge()
236 	power_supply_changed(charger->psy);  in da9030_set_charge()
239 static void da9030_charger_check_state(struct da9030_charger *charger)  in da9030_charger_check_state()  argument
241 	da9030_charger_update_state(charger);  in da9030_charger_check_state()
244 	if (!charger->is_on) {  in da9030_charger_check_state()
245 		if ((charger->chdet) &&  in da9030_charger_check_state()
246 		    (charger->adc.vbat_res <  in da9030_charger_check_state()
247 		     charger->thresholds.vbat_charge_start)) {  in da9030_charger_check_state()
248 			da9030_set_charge(charger, 1);  in da9030_charger_check_state()
251 		/* Charger has been pulled out */  in da9030_charger_check_state()
252 		if (!charger->chdet) {  in da9030_charger_check_state()
253 			da9030_set_charge(charger, 0);  in da9030_charger_check_state()
257 		if (charger->adc.vbat_res >=  in da9030_charger_check_state()
258 		    charger->thresholds.vbat_charge_stop) {  in da9030_charger_check_state()
259 			da9030_set_charge(charger, 0);  in da9030_charger_check_state()
260 			da903x_write(charger->master, DA9030_VBATMON,  in da9030_charger_check_state()
261 				       charger->thresholds.vbat_charge_restart);  in da9030_charger_check_state()
262 		} else if (charger->adc.vbat_res >  in da9030_charger_check_state()
263 			   charger->thresholds.vbat_low) {  in da9030_charger_check_state()
267 			da903x_write(charger->master, DA9030_VBATMON,  in da9030_charger_check_state()
268 				     charger->thresholds.vbat_low);  in da9030_charger_check_state()
270 		if (charger->adc.vchmax_res > charger->thresholds.vcharge_max ||  in da9030_charger_check_state()
271 		    charger->adc.vchmin_res < charger->thresholds.vcharge_min ||  in da9030_charger_check_state()
273 		    charger->adc.tbat_res < charger->thresholds.tbat_high ||  in da9030_charger_check_state()
274 		    charger->adc.tbat_res > charger->thresholds.tbat_low) {  in da9030_charger_check_state()
275 			/* disable charger */  in da9030_charger_check_state()
276 			da9030_set_charge(charger, 0);  in da9030_charger_check_state()
283 	struct da9030_charger *charger;  in da9030_charging_monitor()  local
285 	charger = container_of(work, struct da9030_charger, work.work);  in da9030_charging_monitor()
287 	da9030_charger_check_state(charger);  in da9030_charging_monitor()
290 	schedule_delayed_work(&charger->work, charger->interval);  in da9030_charging_monitor()
304 static void da9030_battery_check_status(struct da9030_charger *charger,  in da9030_battery_check_status()  argument
307 	if (charger->chdet) {  in da9030_battery_check_status()
308 		if (charger->is_on)  in da9030_battery_check_status()
317 static void da9030_battery_check_health(struct da9030_charger *charger,  in da9030_battery_check_health()  argument
320 	if (charger->fault & DA9030_FAULT_LOG_OVER_TEMP)  in da9030_battery_check_health()
322 	else if (charger->fault & DA9030_FAULT_LOG_VBAT_OVER)  in da9030_battery_check_health()
332 	struct da9030_charger *charger = power_supply_get_drvdata(psy);  in da9030_battery_get_property()  local
336 		da9030_battery_check_status(charger, val);  in da9030_battery_get_property()
339 		da9030_battery_check_health(charger, val);  in da9030_battery_get_property()
342 		val->intval = charger->battery_info->technology;  in da9030_battery_get_property()
345 		val->intval = charger->battery_info->voltage_max_design;  in da9030_battery_get_property()
348 		val->intval = charger->battery_info->voltage_min_design;  in da9030_battery_get_property()
351 		val->intval = da9030_reg_to_mV(charger->adc.vbat_res) * 1000;  in da9030_battery_get_property()
355 			da9030_reg_to_mA(charger->adc.ichaverage_res) * 1000;  in da9030_battery_get_property()
358 		val->strval = charger->battery_info->name;  in da9030_battery_get_property()
367 static void da9030_battery_vbat_event(struct da9030_charger *charger)  in da9030_battery_vbat_event()  argument
369 	da9030_read_adc(charger, &charger->adc);  in da9030_battery_vbat_event()
371 	if (charger->is_on)  in da9030_battery_vbat_event()
374 	if (charger->adc.vbat_res < charger->thresholds.vbat_low) {  in da9030_battery_vbat_event()
376 		da903x_write(charger->master, DA9030_VBATMON,  in da9030_battery_vbat_event()
377 			     charger->thresholds.vbat_crit);  in da9030_battery_vbat_event()
378 		if (charger->battery_low)  in da9030_battery_vbat_event()
379 			charger->battery_low();  in da9030_battery_vbat_event()
380 	} else if (charger->adc.vbat_res <  in da9030_battery_vbat_event()
381 		   charger->thresholds.vbat_crit) {  in da9030_battery_vbat_event()
383 		if (charger->battery_critical)  in da9030_battery_vbat_event()
384 			charger->battery_critical();  in da9030_battery_vbat_event()
391 	struct da9030_charger *charger =  in da9030_battery_event()  local
396 		cancel_delayed_work_sync(&charger->work);  in da9030_battery_event()
397 		schedule_work(&charger->work.work);  in da9030_battery_event()
400 		da9030_battery_vbat_event(charger);  in da9030_battery_event()
404 		da9030_set_charge(charger, 0);  in da9030_battery_event()
411 static void da9030_battery_convert_thresholds(struct da9030_charger *charger,  in da9030_battery_convert_thresholds()  argument
414 	charger->thresholds.tbat_low = pdata->tbat_low;  in da9030_battery_convert_thresholds()
415 	charger->thresholds.tbat_high = pdata->tbat_high;  in da9030_battery_convert_thresholds()
416 	charger->thresholds.tbat_restart  = pdata->tbat_restart;  in da9030_battery_convert_thresholds()
418 	charger->thresholds.vbat_low =  in da9030_battery_convert_thresholds()
420 	charger->thresholds.vbat_crit =  in da9030_battery_convert_thresholds()
422 	charger->thresholds.vbat_charge_start =  in da9030_battery_convert_thresholds()
424 	charger->thresholds.vbat_charge_stop =  in da9030_battery_convert_thresholds()
426 	charger->thresholds.vbat_charge_restart =  in da9030_battery_convert_thresholds()
429 	charger->thresholds.vcharge_min =  in da9030_battery_convert_thresholds()
431 	charger->thresholds.vcharge_max =  in da9030_battery_convert_thresholds()
435 static void da9030_battery_setup_psy(struct da9030_charger *charger)  in da9030_battery_setup_psy()  argument
437 	struct power_supply_desc *psy_desc = &charger->psy_desc;  in da9030_battery_setup_psy()
438 	struct power_supply_info *info = charger->battery_info;  in da9030_battery_setup_psy()
449 static int da9030_battery_charger_init(struct da9030_charger *charger)  in da9030_battery_charger_init()  argument
454 	v[0] = v[1] = charger->thresholds.vbat_low;  in da9030_battery_charger_init()
455 	v[2] = charger->thresholds.tbat_high;  in da9030_battery_charger_init()
456 	v[3] = charger->thresholds.tbat_restart;  in da9030_battery_charger_init()
457 	v[4] = charger->thresholds.tbat_low;  in da9030_battery_charger_init()
459 	ret = da903x_writes(charger->master, DA9030_VBATMON, 5, v);  in da9030_battery_charger_init()
467 	ret = da903x_write(charger->master, DA9030_ADC_MAN_CONTROL,  in da9030_battery_charger_init()
474 	return da903x_write(charger->master, DA9030_ADC_AUTO_CONTROL,  in da9030_battery_charger_init()
483 	struct da9030_charger *charger;  in da9030_battery_probe()  local
496 	charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL);  in da9030_battery_probe()
497 	if (charger == NULL)  in da9030_battery_probe()
500 	charger->master = pdev->dev.parent;  in da9030_battery_probe()
504 	charger->interval = msecs_to_jiffies(  in da9030_battery_probe()
507 	charger->charge_milliamp = pdata->charge_milliamp;  in da9030_battery_probe()
508 	charger->charge_millivolt = pdata->charge_millivolt;  in da9030_battery_probe()
509 	charger->battery_info = pdata->battery_info;  in da9030_battery_probe()
510 	charger->battery_low = pdata->battery_low;  in da9030_battery_probe()
511 	charger->battery_critical = pdata->battery_critical;  in da9030_battery_probe()
513 	da9030_battery_convert_thresholds(charger, pdata);  in da9030_battery_probe()
515 	ret = da9030_battery_charger_init(charger);  in da9030_battery_probe()
519 	INIT_DELAYED_WORK(&charger->work, da9030_charging_monitor);  in da9030_battery_probe()
520 	schedule_delayed_work(&charger->work, charger->interval);  in da9030_battery_probe()
522 	charger->nb.notifier_call = da9030_battery_event;  in da9030_battery_probe()
523 	ret = da903x_register_notifier(charger->master, &charger->nb,  in da9030_battery_probe()
531 	da9030_battery_setup_psy(charger);  in da9030_battery_probe()
532 	psy_cfg.drv_data = charger;  in da9030_battery_probe()
533 	charger->psy = power_supply_register(&pdev->dev, &charger->psy_desc,  in da9030_battery_probe()
535 	if (IS_ERR(charger->psy)) {  in da9030_battery_probe()
536 		ret = PTR_ERR(charger->psy);  in da9030_battery_probe()
540 	charger->debug_file = da9030_bat_create_debugfs(charger);  in da9030_battery_probe()
541 	platform_set_drvdata(pdev, charger);  in da9030_battery_probe()
545 	da903x_unregister_notifier(charger->master, &charger->nb,  in da9030_battery_probe()
549 	cancel_delayed_work(&charger->work);  in da9030_battery_probe()
557 	struct da9030_charger *charger = platform_get_drvdata(dev);  in da9030_battery_remove()  local
559 	da9030_bat_remove_debugfs(charger);  in da9030_battery_remove()
561 	da903x_unregister_notifier(charger->master, &charger->nb,  in da9030_battery_remove()
564 	cancel_delayed_work_sync(&charger->work);  in da9030_battery_remove()
565 	da9030_set_charge(charger, 0);  in da9030_battery_remove()
566 	power_supply_unregister(charger->psy);  in da9030_battery_remove()
581 MODULE_DESCRIPTION("DA9030 battery charger driver");