1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * DA9150 Charger Driver
17 #include <linux/usb/phy.h>
27 	struct power_supply *usb;  member
42 static inline int da9150_charger_supply_online(struct da9150_charger *charger,  in da9150_charger_supply_online()  argument
46 	val->intval = (psy == charger->supply_online) ? 1 : 0;  in da9150_charger_supply_online()
51 /* Charger Properties */
52 static int da9150_charger_vbus_voltage_now(struct da9150_charger *charger,  in da9150_charger_vbus_voltage_now()  argument
57 	/* Read processed value - mV units */  in da9150_charger_vbus_voltage_now()
58 	ret = iio_read_channel_processed(charger->vbus_chan, &v_val);  in da9150_charger_vbus_voltage_now()
63 	val->intval = v_val * 1000;  in da9150_charger_vbus_voltage_now()
68 static int da9150_charger_ibus_current_avg(struct da9150_charger *charger,  in da9150_charger_ibus_current_avg()  argument
73 	/* Read processed value - mA units */  in da9150_charger_ibus_current_avg()
74 	ret = iio_read_channel_processed(charger->ibus_chan, &i_val);  in da9150_charger_ibus_current_avg()
79 	val->intval = i_val * 1000;  in da9150_charger_ibus_current_avg()
84 static int da9150_charger_tjunc_temp(struct da9150_charger *charger,  in da9150_charger_tjunc_temp()  argument
89 	/* Read processed value - 0.001 degrees C units */  in da9150_charger_tjunc_temp()
90 	ret = iio_read_channel_processed(charger->tjunc_chan, &t_val);  in da9150_charger_tjunc_temp()
95 	val->intval = t_val / 100;  in da9150_charger_tjunc_temp()
111 	struct da9150_charger *charger = dev_get_drvdata(psy->dev.parent);  in da9150_charger_get_prop()  local
116 		ret = da9150_charger_supply_online(charger, psy, val);  in da9150_charger_get_prop()
119 		ret = da9150_charger_vbus_voltage_now(charger, val);  in da9150_charger_get_prop()
122 		ret = da9150_charger_ibus_current_avg(charger, val);  in da9150_charger_get_prop()
125 		ret = da9150_charger_tjunc_temp(charger, val);  in da9150_charger_get_prop()
128 		ret = -EINVAL;  in da9150_charger_get_prop()
136 static int da9150_charger_battery_status(struct da9150_charger *charger,  in da9150_charger_battery_status()  argument
142 	reg = da9150_reg_read(charger->da9150, DA9150_STATUS_H);  in da9150_charger_battery_status()
146 		val->intval = POWER_SUPPLY_STATUS_DISCHARGING;  in da9150_charger_battery_status()
151 	reg = da9150_reg_read(charger->da9150, DA9150_STATUS_J);  in da9150_charger_battery_status()
159 		val->intval = POWER_SUPPLY_STATUS_CHARGING;  in da9150_charger_battery_status()
166 		val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;  in da9150_charger_battery_status()
169 		val->intval = POWER_SUPPLY_STATUS_FULL;  in da9150_charger_battery_status()
172 		val->intval = POWER_SUPPLY_STATUS_UNKNOWN;  in da9150_charger_battery_status()
179 static int da9150_charger_battery_health(struct da9150_charger *charger,  in da9150_charger_battery_health()  argument
184 	reg = da9150_reg_read(charger->da9150, DA9150_STATUS_J);  in da9150_charger_battery_health()
189 		val->intval = POWER_SUPPLY_HEALTH_COLD;  in da9150_charger_battery_health()
192 		val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;  in da9150_charger_battery_health()
202 		val->intval = POWER_SUPPLY_HEALTH_DEAD;  in da9150_charger_battery_health()
205 		val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;  in da9150_charger_battery_health()
208 		val->intval = POWER_SUPPLY_HEALTH_GOOD;  in da9150_charger_battery_health()
215 static int da9150_charger_battery_present(struct da9150_charger *charger,  in da9150_charger_battery_present()  argument
221 	reg = da9150_reg_read(charger->da9150, DA9150_STATUS_J);  in da9150_charger_battery_present()
223 		val->intval = 0;  in da9150_charger_battery_present()
225 		val->intval = 1;  in da9150_charger_battery_present()
230 static int da9150_charger_battery_charge_type(struct da9150_charger *charger,  in da9150_charger_battery_charge_type()  argument
235 	reg = da9150_reg_read(charger->da9150, DA9150_STATUS_J);  in da9150_charger_battery_charge_type()
239 		val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;  in da9150_charger_battery_charge_type()
244 		val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;  in da9150_charger_battery_charge_type()
247 		val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;  in da9150_charger_battery_charge_type()
254 static int da9150_charger_battery_voltage_min(struct da9150_charger *charger,  in da9150_charger_battery_voltage_min()  argument
259 	reg = da9150_reg_read(charger->da9150, DA9150_PPR_CHGCTRL_C);  in da9150_charger_battery_voltage_min()
262 	val->intval = ((reg & DA9150_CHG_VFAULT_MASK) * 50000) + 2500000;  in da9150_charger_battery_voltage_min()
267 static int da9150_charger_battery_voltage_now(struct da9150_charger *charger,  in da9150_charger_battery_voltage_now()  argument
272 	/* Read processed value - mV units */  in da9150_charger_battery_voltage_now()
273 	ret = iio_read_channel_processed(charger->vbat_chan, &v_val);  in da9150_charger_battery_voltage_now()
277 	val->intval = v_val * 1000;  in da9150_charger_battery_voltage_now()
282 static int da9150_charger_battery_current_max(struct da9150_charger *charger,  in da9150_charger_battery_current_max()  argument
287 	reg = da9150_reg_read(charger->da9150, DA9150_PPR_CHGCTRL_D);  in da9150_charger_battery_current_max()
290 	val->intval = reg * 25000;  in da9150_charger_battery_current_max()
295 static int da9150_charger_battery_voltage_max(struct da9150_charger *charger,  in da9150_charger_battery_voltage_max()  argument
300 	reg = da9150_reg_read(charger->da9150, DA9150_PPR_CHGCTRL_B);  in da9150_charger_battery_voltage_max()
303 	val->intval = ((reg & DA9150_CHG_VBAT_MASK) * 25000) + 3650000;  in da9150_charger_battery_voltage_max()
323 	struct da9150_charger *charger = dev_get_drvdata(psy->dev.parent);  in da9150_charger_battery_get_prop()  local
328 		ret = da9150_charger_battery_status(charger, val);  in da9150_charger_battery_get_prop()
331 		ret = da9150_charger_supply_online(charger, psy, val);  in da9150_charger_battery_get_prop()
334 		ret = da9150_charger_battery_health(charger, val);  in da9150_charger_battery_get_prop()
337 		ret = da9150_charger_battery_present(charger, val);  in da9150_charger_battery_get_prop()
340 		ret = da9150_charger_battery_charge_type(charger, val);  in da9150_charger_battery_get_prop()
343 		ret = da9150_charger_battery_voltage_min(charger, val);  in da9150_charger_battery_get_prop()
346 		ret = da9150_charger_battery_voltage_now(charger, val);  in da9150_charger_battery_get_prop()
349 		ret = da9150_charger_battery_current_max(charger, val);  in da9150_charger_battery_get_prop()
352 		ret = da9150_charger_battery_voltage_max(charger, val);  in da9150_charger_battery_get_prop()
355 		ret = -EINVAL;  in da9150_charger_battery_get_prop()
364 	struct da9150_charger *charger = data;  in da9150_charger_chg_irq()  local
366 	power_supply_changed(charger->battery);  in da9150_charger_chg_irq()
373 	struct da9150_charger *charger = data;  in da9150_charger_tjunc_irq()  local
376 	dev_crit(charger->dev, "TJunc over temperature!!!\n");  in da9150_charger_tjunc_irq()
377 	power_supply_changed(charger->usb);  in da9150_charger_tjunc_irq()
384 	struct da9150_charger *charger = data;  in da9150_charger_vfault_irq()  local
387 	dev_crit(charger->dev, "VSYS under voltage!!!\n");  in da9150_charger_vfault_irq()
388 	power_supply_changed(charger->usb);  in da9150_charger_vfault_irq()
389 	power_supply_changed(charger->battery);  in da9150_charger_vfault_irq()
396 	struct da9150_charger *charger = data;  in da9150_charger_vbus_irq()  local
399 	reg = da9150_reg_read(charger->da9150, DA9150_STATUS_H);  in da9150_charger_vbus_irq()
401 	/* Charger plugged in or battery only */  in da9150_charger_vbus_irq()
405 		charger->supply_online = charger->battery;  in da9150_charger_vbus_irq()
408 		charger->supply_online = charger->usb;  in da9150_charger_vbus_irq()
411 		dev_warn(charger->dev, "Unknown VBUS state - reg = 0x%x\n",  in da9150_charger_vbus_irq()
413 		charger->supply_online = NULL;  in da9150_charger_vbus_irq()
417 	power_supply_changed(charger->usb);  in da9150_charger_vbus_irq()
418 	power_supply_changed(charger->battery);  in da9150_charger_vbus_irq()
425 	struct da9150_charger *charger =  in da9150_charger_otg_work()  local
428 	switch (charger->usb_event) {  in da9150_charger_otg_work()
431 		da9150_set_bits(charger->da9150, DA9150_PPR_BKCTRL_A,  in da9150_charger_otg_work()
436 		power_supply_changed(charger->usb);  in da9150_charger_otg_work()
437 		power_supply_changed(charger->battery);  in da9150_charger_otg_work()
438 		da9150_set_bits(charger->da9150, DA9150_PPR_BKCTRL_A,  in da9150_charger_otg_work()
447 	struct da9150_charger *charger =  in da9150_charger_otg_ncb()  local
450 	dev_dbg(charger->dev, "DA9150 OTG notify %lu\n", val);  in da9150_charger_otg_ncb()
452 	charger->usb_event = val;  in da9150_charger_otg_ncb()
453 	schedule_work(&charger->otg_work);  in da9150_charger_otg_ncb()
462 	struct device *dev = &pdev->dev;  in da9150_charger_register_irq()
463 	struct da9150_charger *charger = platform_get_drvdata(pdev);  in da9150_charger_register_irq()  local
471 				   charger);  in da9150_charger_register_irq()
481 	struct da9150_charger *charger = platform_get_drvdata(pdev);  in da9150_charger_unregister_irq()  local
488 	free_irq(irq, charger);  in da9150_charger_unregister_irq()
492 	.name		= "da9150-usb",
500 	.name		= "da9150-battery",
509 	struct device *dev = &pdev->dev;  in da9150_charger_probe()
510 	struct da9150 *da9150 = dev_get_drvdata(dev->parent);  in da9150_charger_probe()
511 	struct da9150_charger *charger;  in da9150_charger_probe()  local
515 	charger = devm_kzalloc(dev, sizeof(struct da9150_charger), GFP_KERNEL);  in da9150_charger_probe()
516 	if (!charger)  in da9150_charger_probe()
517 		return -ENOMEM;  in da9150_charger_probe()
519 	platform_set_drvdata(pdev, charger);  in da9150_charger_probe()
520 	charger->da9150 = da9150;  in da9150_charger_probe()
521 	charger->dev = dev;  in da9150_charger_probe()
524 	charger->ibus_chan = devm_iio_channel_get(dev, "CHAN_IBUS");  in da9150_charger_probe()
525 	if (IS_ERR(charger->ibus_chan))  in da9150_charger_probe()
526 		return PTR_ERR(charger->ibus_chan);  in da9150_charger_probe()
528 	charger->vbus_chan = devm_iio_channel_get(dev, "CHAN_VBUS");  in da9150_charger_probe()
529 	if (IS_ERR(charger->vbus_chan))  in da9150_charger_probe()
530 		return PTR_ERR(charger->vbus_chan);  in da9150_charger_probe()
532 	charger->tjunc_chan = devm_iio_channel_get(dev, "CHAN_TJUNC");  in da9150_charger_probe()
533 	if (IS_ERR(charger->tjunc_chan))  in da9150_charger_probe()
534 		return PTR_ERR(charger->tjunc_chan);  in da9150_charger_probe()
536 	charger->vbat_chan = devm_iio_channel_get(dev, "CHAN_VBAT");  in da9150_charger_probe()
537 	if (IS_ERR(charger->vbat_chan))  in da9150_charger_probe()
538 		return PTR_ERR(charger->vbat_chan);  in da9150_charger_probe()
541 	charger->usb = devm_power_supply_register(dev, &usb_desc, NULL);  in da9150_charger_probe()
542 	if (IS_ERR(charger->usb))  in da9150_charger_probe()
543 		return PTR_ERR(charger->usb);  in da9150_charger_probe()
545 	charger->battery = devm_power_supply_register(dev, &battery_desc, NULL);  in da9150_charger_probe()
546 	if (IS_ERR(charger->battery))  in da9150_charger_probe()
547 		return PTR_ERR(charger->battery);  in da9150_charger_probe()
555 		charger->supply_online = charger->battery;  in da9150_charger_probe()
558 		charger->supply_online = charger->usb;  in da9150_charger_probe()
561 		dev_warn(dev, "Unknown VBUS state - reg = 0x%x\n", reg);  in da9150_charger_probe()
562 		charger->supply_online = NULL;  in da9150_charger_probe()
567 	charger->usb_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);  in da9150_charger_probe()
568 	if (!IS_ERR_OR_NULL(charger->usb_phy)) {  in da9150_charger_probe()
569 		INIT_WORK(&charger->otg_work, da9150_charger_otg_work);  in da9150_charger_probe()
570 		charger->otg_nb.notifier_call = da9150_charger_otg_ncb;  in da9150_charger_probe()
571 		usb_register_notifier(charger->usb_phy, &charger->otg_nb);  in da9150_charger_probe()
605 	if (!IS_ERR_OR_NULL(charger->usb_phy))  in da9150_charger_probe()
606 		usb_unregister_notifier(charger->usb_phy, &charger->otg_nb);  in da9150_charger_probe()
613 	struct da9150_charger *charger = platform_get_drvdata(pdev);  in da9150_charger_remove()  local
618 	free_irq(irq, charger);  in da9150_charger_remove()
621 	free_irq(irq, charger);  in da9150_charger_remove()
624 	free_irq(irq, charger);  in da9150_charger_remove()
627 	free_irq(irq, charger);  in da9150_charger_remove()
629 	if (!IS_ERR_OR_NULL(charger->usb_phy))  in da9150_charger_remove()
630 		usb_unregister_notifier(charger->usb_phy, &charger->otg_nb);  in da9150_charger_remove()
631 	cancel_work_sync(&charger->otg_work);  in da9150_charger_remove()
636 		.name = "da9150-charger",
644 MODULE_DESCRIPTION("Charger Driver for DA9150");