Lines Matching +full:usb +full:- +full:charger
1 // SPDX-License-Identifier: GPL-2.0+
3 * Power supply driver for ChromeOS EC based USB PD Charger.
5 * Copyright (c) 2014 - 2018 Google, Inc
25 #define DRV_NAME "cros-usbpd-charger"
41 struct charger_data *charger; member
92 return port->port_number >= port->charger->num_usbpd_ports; in cros_usbpd_charger_port_is_dedicated()
95 static int cros_usbpd_charger_ec_command(struct charger_data *charger, in cros_usbpd_charger_ec_command() argument
103 struct cros_ec_dev *ec_dev = charger->ec_dev; in cros_usbpd_charger_ec_command()
109 return -ENOMEM; in cros_usbpd_charger_ec_command()
111 msg->version = version; in cros_usbpd_charger_ec_command()
112 msg->command = ec_dev->cmd_offset + command; in cros_usbpd_charger_ec_command()
113 msg->outsize = outsize; in cros_usbpd_charger_ec_command()
114 msg->insize = insize; in cros_usbpd_charger_ec_command()
117 memcpy(msg->data, outdata, outsize); in cros_usbpd_charger_ec_command()
119 ret = cros_ec_cmd_xfer_status(charger->ec_device, msg); in cros_usbpd_charger_ec_command()
121 memcpy(indata, msg->data, insize); in cros_usbpd_charger_ec_command()
127 static int cros_usbpd_charger_get_num_ports(struct charger_data *charger) in cros_usbpd_charger_get_num_ports() argument
132 ret = cros_usbpd_charger_ec_command(charger, 0, in cros_usbpd_charger_get_num_ports()
141 static int cros_usbpd_charger_get_usbpd_num_ports(struct charger_data *charger) in cros_usbpd_charger_get_usbpd_num_ports() argument
146 ret = cros_usbpd_charger_ec_command(charger, 0, EC_CMD_USB_PD_PORTS, in cros_usbpd_charger_get_usbpd_num_ports()
156 struct charger_data *charger = port->charger; in cros_usbpd_charger_get_discovery_info() local
161 req.port = port->port_number; in cros_usbpd_charger_get_discovery_info()
163 ret = cros_usbpd_charger_ec_command(charger, 0, in cros_usbpd_charger_get_discovery_info()
168 dev_err(charger->dev, in cros_usbpd_charger_get_discovery_info()
173 dev_dbg(charger->dev, "Port %d: VID = 0x%x, PID=0x%x, PTYPE=0x%x\n", in cros_usbpd_charger_get_discovery_info()
174 port->port_number, resp.vid, resp.pid, resp.ptype); in cros_usbpd_charger_get_discovery_info()
176 snprintf(port->manufacturer, sizeof(port->manufacturer), "%x", in cros_usbpd_charger_get_discovery_info()
178 snprintf(port->model_name, sizeof(port->model_name), "%x", resp.pid); in cros_usbpd_charger_get_discovery_info()
185 struct charger_data *charger = port->charger; in cros_usbpd_charger_get_power_info() local
189 struct device *dev = charger->dev; in cros_usbpd_charger_get_power_info()
192 req.port = port->port_number; in cros_usbpd_charger_get_power_info()
193 ret = cros_usbpd_charger_ec_command(charger, 0, in cros_usbpd_charger_get_power_info()
202 last_psy_status = port->psy_status; in cros_usbpd_charger_get_power_info()
203 last_psy_usb_type = port->psy_usb_type; in cros_usbpd_charger_get_power_info()
207 port->psy_status = POWER_SUPPLY_STATUS_NOT_CHARGING; in cros_usbpd_charger_get_power_info()
208 port->psy_online = 0; in cros_usbpd_charger_get_power_info()
211 port->psy_status = POWER_SUPPLY_STATUS_NOT_CHARGING; in cros_usbpd_charger_get_power_info()
212 port->psy_online = 0; in cros_usbpd_charger_get_power_info()
215 port->psy_status = POWER_SUPPLY_STATUS_CHARGING; in cros_usbpd_charger_get_power_info()
216 port->psy_online = 1; in cros_usbpd_charger_get_power_info()
219 port->psy_status = POWER_SUPPLY_STATUS_NOT_CHARGING; in cros_usbpd_charger_get_power_info()
220 port->psy_online = 1; in cros_usbpd_charger_get_power_info()
227 port->psy_voltage_max_design = resp.meas.voltage_max; in cros_usbpd_charger_get_power_info()
228 port->psy_voltage_now = resp.meas.voltage_now; in cros_usbpd_charger_get_power_info()
229 port->psy_current_max = resp.meas.current_max; in cros_usbpd_charger_get_power_info()
230 port->psy_power_max = resp.max_power; in cros_usbpd_charger_get_power_info()
235 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP; in cros_usbpd_charger_get_power_info()
239 * For dual-role devices when we are a source, the firmware in cros_usbpd_charger_get_power_info()
244 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_PD_DRP; in cros_usbpd_charger_get_power_info()
246 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP; in cros_usbpd_charger_get_power_info()
250 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID; in cros_usbpd_charger_get_power_info()
253 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_C; in cros_usbpd_charger_get_power_info()
256 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP; in cros_usbpd_charger_get_power_info()
259 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP; in cros_usbpd_charger_get_power_info()
263 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_PD_DRP; in cros_usbpd_charger_get_power_info()
265 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_PD; in cros_usbpd_charger_get_power_info()
269 * While the EC is trying to determine the type of charger that in cros_usbpd_charger_get_power_info()
270 * has been plugged in, it will report the charger type as in cros_usbpd_charger_get_power_info()
274 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN; in cros_usbpd_charger_get_power_info()
275 port->psy_voltage_max_design = 0; in cros_usbpd_charger_get_power_info()
276 port->psy_current_max = 0; in cros_usbpd_charger_get_power_info()
279 dev_err(dev, "Port %d: default case!\n", port->port_number); in cros_usbpd_charger_get_power_info()
280 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP; in cros_usbpd_charger_get_power_info()
284 port->psy_desc.type = POWER_SUPPLY_TYPE_MAINS; in cros_usbpd_charger_get_power_info()
286 port->psy_desc.type = POWER_SUPPLY_TYPE_USB; in cros_usbpd_charger_get_power_info()
290 port->port_number, resp.type, resp.meas.voltage_max, in cros_usbpd_charger_get_power_info()
300 if (last_psy_usb_type != port->psy_usb_type || in cros_usbpd_charger_get_power_info()
301 last_psy_status != port->psy_status) in cros_usbpd_charger_get_power_info()
302 power_supply_changed(port->psy); in cros_usbpd_charger_get_power_info()
313 time_is_after_jiffies(port->last_update + in cros_usbpd_charger_get_port_status()
323 port->last_update = jiffies; in cros_usbpd_charger_get_port_status()
328 static int cros_usbpd_charger_set_ext_power_limit(struct charger_data *charger, in cros_usbpd_charger_set_ext_power_limit() argument
338 ret = cros_usbpd_charger_ec_command(charger, 0, in cros_usbpd_charger_set_ext_power_limit()
342 dev_err(charger->dev, in cros_usbpd_charger_set_ext_power_limit()
351 struct charger_data *charger = port->charger; in cros_usbpd_charger_power_changed() local
354 for (i = 0; i < charger->num_registered_psy; i++) in cros_usbpd_charger_power_changed()
355 cros_usbpd_charger_get_port_status(charger->ports[i], false); in cros_usbpd_charger_power_changed()
363 struct charger_data *charger = port->charger; in cros_usbpd_charger_get_prop() local
364 struct cros_ec_device *ec_device = charger->ec_device; in cros_usbpd_charger_get_prop()
365 struct device *dev = charger->dev; in cros_usbpd_charger_get_prop()
384 if (ec_device->mkbp_event_supported || port->psy_online) in cros_usbpd_charger_get_prop()
394 return -EINVAL; in cros_usbpd_charger_get_prop()
403 val->intval = port->psy_online; in cros_usbpd_charger_get_prop()
406 val->intval = port->psy_status; in cros_usbpd_charger_get_prop()
409 val->intval = port->psy_current_max * 1000; in cros_usbpd_charger_get_prop()
412 val->intval = port->psy_voltage_max_design * 1000; in cros_usbpd_charger_get_prop()
415 val->intval = port->psy_voltage_now * 1000; in cros_usbpd_charger_get_prop()
418 val->intval = port->psy_usb_type; in cros_usbpd_charger_get_prop()
422 val->intval = -1; in cros_usbpd_charger_get_prop()
424 val->intval = input_current_limit * 1000; in cros_usbpd_charger_get_prop()
428 val->intval = -1; in cros_usbpd_charger_get_prop()
430 val->intval = input_voltage_limit * 1000; in cros_usbpd_charger_get_prop()
433 val->strval = port->model_name; in cros_usbpd_charger_get_prop()
436 val->strval = port->manufacturer; in cros_usbpd_charger_get_prop()
439 return -EINVAL; in cros_usbpd_charger_get_prop()
450 struct charger_data *charger = port->charger; in cros_usbpd_charger_set_prop() local
451 struct device *dev = charger->dev; in cros_usbpd_charger_set_prop()
456 if (val->intval >= U16_MAX * 1000) in cros_usbpd_charger_set_prop()
457 return -EINVAL; in cros_usbpd_charger_set_prop()
459 if (val->intval < 0) in cros_usbpd_charger_set_prop()
462 intval = val->intval / 1000; in cros_usbpd_charger_set_prop()
466 ret = cros_usbpd_charger_set_ext_power_limit(charger, intval, in cros_usbpd_charger_set_prop()
481 ret = cros_usbpd_charger_set_ext_power_limit(charger, in cros_usbpd_charger_set_prop()
497 ret = -EINVAL; in cros_usbpd_charger_set_prop()
524 struct charger_data *charger = container_of(nb, struct charger_data, in cros_usbpd_charger_ec_event() local
527 cros_usbpd_charger_power_changed(charger->ports[0]->psy); in cros_usbpd_charger_ec_event()
533 struct charger_data *charger = data; in cros_usbpd_charger_unregister_notifier() local
535 cros_usbpd_unregister_notify(&charger->notifier); in cros_usbpd_charger_unregister_notifier()
540 struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent); in cros_usbpd_charger_probe()
541 struct cros_ec_device *ec_device = ec_dev->ec_dev; in cros_usbpd_charger_probe()
543 struct device *dev = &pd->dev; in cros_usbpd_charger_probe()
544 struct charger_data *charger; in cros_usbpd_charger_probe() local
547 int ret = -EINVAL; in cros_usbpd_charger_probe()
550 charger = devm_kzalloc(dev, sizeof(struct charger_data), in cros_usbpd_charger_probe()
552 if (!charger) in cros_usbpd_charger_probe()
553 return -ENOMEM; in cros_usbpd_charger_probe()
555 charger->dev = dev; in cros_usbpd_charger_probe()
556 charger->ec_dev = ec_dev; in cros_usbpd_charger_probe()
557 charger->ec_device = ec_device; in cros_usbpd_charger_probe()
559 platform_set_drvdata(pd, charger); in cros_usbpd_charger_probe()
562 * We need to know the number of USB PD ports in order to know whether in cros_usbpd_charger_probe()
564 * after the USB PD ports, and there should be only one. in cros_usbpd_charger_probe()
566 charger->num_usbpd_ports = in cros_usbpd_charger_probe()
567 cros_usbpd_charger_get_usbpd_num_ports(charger); in cros_usbpd_charger_probe()
568 if (charger->num_usbpd_ports <= 0) { in cros_usbpd_charger_probe()
570 * This can happen on a system that doesn't support USB PD. in cros_usbpd_charger_probe()
573 dev_info(dev, "No USB PD charging ports found\n"); in cros_usbpd_charger_probe()
576 charger->num_charger_ports = cros_usbpd_charger_get_num_ports(charger); in cros_usbpd_charger_probe()
577 if (charger->num_charger_ports < 0) { in cros_usbpd_charger_probe()
579 * This can happen on a system that doesn't support USB PD. in cros_usbpd_charger_probe()
582 * let's set up the number of charger ports equal to the number in cros_usbpd_charger_probe()
583 * of USB PD ports in cros_usbpd_charger_probe()
585 dev_info(dev, "Could not get charger port count\n"); in cros_usbpd_charger_probe()
586 charger->num_charger_ports = charger->num_usbpd_ports; in cros_usbpd_charger_probe()
589 if (charger->num_charger_ports <= 0) { in cros_usbpd_charger_probe()
591 * This can happen on a system that doesn't support USB PD and in cros_usbpd_charger_probe()
596 ret = -ENODEV; in cros_usbpd_charger_probe()
604 if (charger->num_charger_ports < charger->num_usbpd_ports || in cros_usbpd_charger_probe()
605 charger->num_charger_ports > (charger->num_usbpd_ports + 1)) { in cros_usbpd_charger_probe()
607 ret = -EPROTO; in cros_usbpd_charger_probe()
611 for (i = 0; i < charger->num_charger_ports; i++) { in cros_usbpd_charger_probe()
616 ret = -ENOMEM; in cros_usbpd_charger_probe()
620 port->charger = charger; in cros_usbpd_charger_probe()
621 port->port_number = i; in cros_usbpd_charger_probe()
623 psy_desc = &port->psy_desc; in cros_usbpd_charger_probe()
624 psy_desc->get_property = cros_usbpd_charger_get_prop; in cros_usbpd_charger_probe()
625 psy_desc->set_property = cros_usbpd_charger_set_prop; in cros_usbpd_charger_probe()
626 psy_desc->property_is_writeable = in cros_usbpd_charger_probe()
628 psy_desc->external_power_changed = in cros_usbpd_charger_probe()
633 sprintf(port->name, CHARGER_DEDICATED_DIR_NAME); in cros_usbpd_charger_probe()
634 psy_desc->type = POWER_SUPPLY_TYPE_MAINS; in cros_usbpd_charger_probe()
635 psy_desc->properties = in cros_usbpd_charger_probe()
637 psy_desc->num_properties = in cros_usbpd_charger_probe()
640 sprintf(port->name, CHARGER_USBPD_DIR_NAME, i); in cros_usbpd_charger_probe()
641 psy_desc->type = POWER_SUPPLY_TYPE_USB; in cros_usbpd_charger_probe()
642 psy_desc->properties = cros_usbpd_charger_props; in cros_usbpd_charger_probe()
643 psy_desc->num_properties = in cros_usbpd_charger_probe()
645 psy_desc->usb_types = cros_usbpd_charger_usb_types; in cros_usbpd_charger_probe()
646 psy_desc->num_usb_types = in cros_usbpd_charger_probe()
650 psy_desc->name = port->name; in cros_usbpd_charger_probe()
658 port->psy = psy; in cros_usbpd_charger_probe()
660 charger->ports[charger->num_registered_psy++] = port; in cros_usbpd_charger_probe()
663 if (!charger->num_registered_psy) { in cros_usbpd_charger_probe()
664 ret = -ENODEV; in cros_usbpd_charger_probe()
670 charger->notifier.notifier_call = cros_usbpd_charger_ec_event; in cros_usbpd_charger_probe()
671 ret = cros_usbpd_register_notify(&charger->notifier); in cros_usbpd_charger_probe()
677 charger); in cros_usbpd_charger_probe()
695 struct charger_data *charger = dev_get_drvdata(dev); in cros_usbpd_charger_resume() local
698 if (!charger) in cros_usbpd_charger_resume()
701 for (i = 0; i < charger->num_registered_psy; i++) { in cros_usbpd_charger_resume()
702 power_supply_changed(charger->ports[i]->psy); in cros_usbpd_charger_resume()
703 charger->ports[i]->last_update = in cros_usbpd_charger_resume()
704 jiffies - CHARGER_CACHE_UPDATE_DELAY; in cros_usbpd_charger_resume()
725 MODULE_DESCRIPTION("ChromeOS EC USBPD charger");