3  * Power supply driver for ChromeOS EC based USB PD Charger.
26 #define DRV_NAME "cros-usbpd-charger"
42 	struct charger_data *charger;  member
82 	return port->port_number >= port->charger->num_usbpd_ports;  in cros_usbpd_charger_port_is_dedicated()
85 static int cros_usbpd_charger_ec_command(struct charger_data *charger,  in cros_usbpd_charger_ec_command()  argument
93 	struct cros_ec_dev *ec_dev = charger->ec_dev;  in cros_usbpd_charger_ec_command()
109 	ret = cros_ec_cmd_xfer_status(charger->ec_device, msg);  in cros_usbpd_charger_ec_command()
117 static int cros_usbpd_charger_get_num_ports(struct charger_data *charger)  in cros_usbpd_charger_get_num_ports()  argument
122 	ret = cros_usbpd_charger_ec_command(charger, 0,  in cros_usbpd_charger_get_num_ports()
131 static int cros_usbpd_charger_get_usbpd_num_ports(struct charger_data *charger)  in cros_usbpd_charger_get_usbpd_num_ports()  argument
136 	ret = cros_usbpd_charger_ec_command(charger, 0, EC_CMD_USB_PD_PORTS,  in cros_usbpd_charger_get_usbpd_num_ports()
146 	struct charger_data *charger = port->charger;  in cros_usbpd_charger_get_discovery_info()  local
153 	ret = cros_usbpd_charger_ec_command(charger, 0,  in cros_usbpd_charger_get_discovery_info()
158 		dev_err(charger->dev,  in cros_usbpd_charger_get_discovery_info()
163 	dev_dbg(charger->dev, "Port %d: VID = 0x%x, PID=0x%x, PTYPE=0x%x\n",  in cros_usbpd_charger_get_discovery_info()
175 	struct charger_data *charger = port->charger;  in cros_usbpd_charger_get_power_info()  local
179 	struct device *dev = charger->dev;  in cros_usbpd_charger_get_power_info()
183 	ret = cros_usbpd_charger_ec_command(charger, 0,  in cros_usbpd_charger_get_power_info()
259 		 * While the EC is trying to determine the type of charger that  in cros_usbpd_charger_get_power_info()
260 		 * has been plugged in, it will report the charger type as  in cros_usbpd_charger_get_power_info()
318 static int cros_usbpd_charger_set_ext_power_limit(struct charger_data *charger,  in cros_usbpd_charger_set_ext_power_limit()  argument
328 	ret = cros_usbpd_charger_ec_command(charger, 0,  in cros_usbpd_charger_set_ext_power_limit()
332 		dev_err(charger->dev,  in cros_usbpd_charger_set_ext_power_limit()
341 	struct charger_data *charger = port->charger;  in cros_usbpd_charger_power_changed()  local
344 	for (i = 0; i < charger->num_registered_psy; i++)  in cros_usbpd_charger_power_changed()
345 		cros_usbpd_charger_get_port_status(charger->ports[i], false);  in cros_usbpd_charger_power_changed()
353 	struct charger_data *charger = port->charger;  in cros_usbpd_charger_get_prop()  local
354 	struct cros_ec_device *ec_device = charger->ec_device;  in cros_usbpd_charger_get_prop()
355 	struct device *dev = charger->dev;  in cros_usbpd_charger_get_prop()
440 	struct charger_data *charger = port->charger;  in cros_usbpd_charger_set_prop()  local
441 	struct device *dev = charger->dev;  in cros_usbpd_charger_set_prop()
456 		ret = cros_usbpd_charger_set_ext_power_limit(charger, intval,  in cros_usbpd_charger_set_prop()
471 		ret = cros_usbpd_charger_set_ext_power_limit(charger,  in cros_usbpd_charger_set_prop()
514 	struct charger_data *charger = container_of(nb, struct charger_data,  in cros_usbpd_charger_ec_event()  local
517 	cros_usbpd_charger_power_changed(charger->ports[0]->psy);  in cros_usbpd_charger_ec_event()
523 	struct charger_data *charger = data;  in cros_usbpd_charger_unregister_notifier()  local
525 	cros_usbpd_unregister_notify(&charger->notifier);  in cros_usbpd_charger_unregister_notifier()
534 	struct charger_data *charger;  in cros_usbpd_charger_probe()  local
540 	charger = devm_kzalloc(dev, sizeof(struct charger_data),  in cros_usbpd_charger_probe()
542 	if (!charger)  in cros_usbpd_charger_probe()
545 	charger->dev = dev;  in cros_usbpd_charger_probe()
546 	charger->ec_dev = ec_dev;  in cros_usbpd_charger_probe()
547 	charger->ec_device = ec_device;  in cros_usbpd_charger_probe()
549 	platform_set_drvdata(pd, charger);  in cros_usbpd_charger_probe()
556 	charger->num_usbpd_ports =  in cros_usbpd_charger_probe()
557 		cros_usbpd_charger_get_usbpd_num_ports(charger);  in cros_usbpd_charger_probe()
558 	if (charger->num_usbpd_ports <= 0) {  in cros_usbpd_charger_probe()
566 	charger->num_charger_ports = cros_usbpd_charger_get_num_ports(charger);  in cros_usbpd_charger_probe()
567 	if (charger->num_charger_ports < 0) {  in cros_usbpd_charger_probe()
572 		 * let's set up the number of charger ports equal to the number  in cros_usbpd_charger_probe()
575 		dev_info(dev, "Could not get charger port count\n");  in cros_usbpd_charger_probe()
576 		charger->num_charger_ports = charger->num_usbpd_ports;  in cros_usbpd_charger_probe()
579 	if (charger->num_charger_ports <= 0) {  in cros_usbpd_charger_probe()
594 	if (charger->num_charger_ports < charger->num_usbpd_ports ||  in cros_usbpd_charger_probe()
595 	    charger->num_charger_ports > (charger->num_usbpd_ports + 1)) {  in cros_usbpd_charger_probe()
601 	for (i = 0; i < charger->num_charger_ports; i++) {  in cros_usbpd_charger_probe()
610 		port->charger = charger;  in cros_usbpd_charger_probe()
655 		charger->ports[charger->num_registered_psy++] = port;  in cros_usbpd_charger_probe()
658 	if (!charger->num_registered_psy) {  in cros_usbpd_charger_probe()
665 	charger->notifier.notifier_call = cros_usbpd_charger_ec_event;  in cros_usbpd_charger_probe()
666 	ret = cros_usbpd_register_notify(&charger->notifier);  in cros_usbpd_charger_probe()
672 				charger);  in cros_usbpd_charger_probe()
690 	struct charger_data *charger = dev_get_drvdata(dev);  in cros_usbpd_charger_resume()  local
693 	if (!charger)  in cros_usbpd_charger_resume()
696 	for (i = 0; i < charger->num_registered_psy; i++) {  in cros_usbpd_charger_resume()
697 		power_supply_changed(charger->ports[i]->psy);  in cros_usbpd_charger_resume()
698 		charger->ports[i]->last_update =  in cros_usbpd_charger_resume()
727 MODULE_DESCRIPTION("ChromeOS EC USBPD charger");