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1// SPDX-License-Identifier: GPL-2.0+2/*3 * Power supply driver for ChromeOS EC based USB PD Charger.4 *5 * Copyright (c) 2014 - 2018 Google, Inc6 */7 8#include <linux/mod_devicetable.h>9#include <linux/module.h>10#include <linux/platform_data/cros_ec_commands.h>11#include <linux/platform_data/cros_ec_proto.h>12#include <linux/platform_data/cros_usbpd_notify.h>13#include <linux/platform_device.h>14#include <linux/power_supply.h>15#include <linux/slab.h>16 17#define CHARGER_USBPD_DIR_NAME "CROS_USBPD_CHARGER%d"18#define CHARGER_DEDICATED_DIR_NAME "CROS_DEDICATED_CHARGER"19#define CHARGER_DIR_NAME_LENGTH (sizeof(CHARGER_USBPD_DIR_NAME) >= \20 sizeof(CHARGER_DEDICATED_DIR_NAME) ? \21 sizeof(CHARGER_USBPD_DIR_NAME) : \22 sizeof(CHARGER_DEDICATED_DIR_NAME))23#define CHARGER_CACHE_UPDATE_DELAY msecs_to_jiffies(500)24#define CHARGER_MANUFACTURER_MODEL_LENGTH 3225 26#define DRV_NAME "cros-usbpd-charger"27 28struct port_data {29 int port_number;30 char name[CHARGER_DIR_NAME_LENGTH];31 char manufacturer[CHARGER_MANUFACTURER_MODEL_LENGTH];32 char model_name[CHARGER_MANUFACTURER_MODEL_LENGTH];33 struct power_supply *psy;34 struct power_supply_desc psy_desc;35 int psy_usb_type;36 int psy_online;37 int psy_status;38 int psy_current_max;39 int psy_voltage_max_design;40 int psy_voltage_now;41 int psy_power_max;42 struct charger_data *charger;43 unsigned long last_update;44};45 46struct charger_data {47 struct device *dev;48 struct cros_ec_dev *ec_dev;49 struct cros_ec_device *ec_device;50 int num_charger_ports;51 int num_usbpd_ports;52 int num_registered_psy;53 struct port_data *ports[EC_USB_PD_MAX_PORTS];54 struct notifier_block notifier;55};56 57static enum power_supply_property cros_usbpd_charger_props[] = {58 POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,59 POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,60 POWER_SUPPLY_PROP_ONLINE,61 POWER_SUPPLY_PROP_STATUS,62 POWER_SUPPLY_PROP_CURRENT_MAX,63 POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,64 POWER_SUPPLY_PROP_VOLTAGE_NOW,65 POWER_SUPPLY_PROP_MODEL_NAME,66 POWER_SUPPLY_PROP_MANUFACTURER,67 POWER_SUPPLY_PROP_USB_TYPE68};69 70static enum power_supply_property cros_usbpd_dedicated_charger_props[] = {71 POWER_SUPPLY_PROP_ONLINE,72 POWER_SUPPLY_PROP_STATUS,73 POWER_SUPPLY_PROP_VOLTAGE_NOW,74};75 76/* Input voltage/current limit in mV/mA. Default to none. */77static u16 input_voltage_limit = EC_POWER_LIMIT_NONE;78static u16 input_current_limit = EC_POWER_LIMIT_NONE;79 80static bool cros_usbpd_charger_port_is_dedicated(struct port_data *port)81{82 return port->port_number >= port->charger->num_usbpd_ports;83}84 85static int cros_usbpd_charger_ec_command(struct charger_data *charger,86 unsigned int version,87 unsigned int command,88 void *outdata,89 unsigned int outsize,90 void *indata,91 unsigned int insize)92{93 struct cros_ec_dev *ec_dev = charger->ec_dev;94 struct cros_ec_command *msg;95 int ret;96 97 msg = kzalloc(struct_size(msg, data, max(outsize, insize)), GFP_KERNEL);98 if (!msg)99 return -ENOMEM;100 101 msg->version = version;102 msg->command = ec_dev->cmd_offset + command;103 msg->outsize = outsize;104 msg->insize = insize;105 106 if (outsize)107 memcpy(msg->data, outdata, outsize);108 109 ret = cros_ec_cmd_xfer_status(charger->ec_device, msg);110 if (ret >= 0 && insize)111 memcpy(indata, msg->data, insize);112 113 kfree(msg);114 return ret;115}116 117static int cros_usbpd_charger_get_num_ports(struct charger_data *charger)118{119 struct ec_response_charge_port_count resp;120 int ret;121 122 ret = cros_usbpd_charger_ec_command(charger, 0,123 EC_CMD_CHARGE_PORT_COUNT,124 NULL, 0, &resp, sizeof(resp));125 if (ret < 0)126 return ret;127 128 return resp.port_count;129}130 131static int cros_usbpd_charger_get_usbpd_num_ports(struct charger_data *charger)132{133 struct ec_response_usb_pd_ports resp;134 int ret;135 136 ret = cros_usbpd_charger_ec_command(charger, 0, EC_CMD_USB_PD_PORTS,137 NULL, 0, &resp, sizeof(resp));138 if (ret < 0)139 return ret;140 141 return resp.num_ports;142}143 144static int cros_usbpd_charger_get_discovery_info(struct port_data *port)145{146 struct charger_data *charger = port->charger;147 struct ec_params_usb_pd_discovery_entry resp;148 struct ec_params_usb_pd_info_request req;149 int ret;150 151 req.port = port->port_number;152 153 ret = cros_usbpd_charger_ec_command(charger, 0,154 EC_CMD_USB_PD_DISCOVERY,155 &req, sizeof(req),156 &resp, sizeof(resp));157 if (ret < 0) {158 dev_err(charger->dev,159 "Unable to query discovery info (err:0x%x)\n", ret);160 return ret;161 }162 163 dev_dbg(charger->dev, "Port %d: VID = 0x%x, PID=0x%x, PTYPE=0x%x\n",164 port->port_number, resp.vid, resp.pid, resp.ptype);165 166 snprintf(port->manufacturer, sizeof(port->manufacturer), "%x",167 resp.vid);168 snprintf(port->model_name, sizeof(port->model_name), "%x", resp.pid);169 170 return 0;171}172 173static int cros_usbpd_charger_get_power_info(struct port_data *port)174{175 struct charger_data *charger = port->charger;176 struct ec_response_usb_pd_power_info resp;177 struct ec_params_usb_pd_power_info req;178 int last_psy_status, last_psy_usb_type;179 struct device *dev = charger->dev;180 int ret;181 182 req.port = port->port_number;183 ret = cros_usbpd_charger_ec_command(charger, 0,184 EC_CMD_USB_PD_POWER_INFO,185 &req, sizeof(req),186 &resp, sizeof(resp));187 if (ret < 0) {188 dev_err(dev, "Unable to query PD power info (err:0x%x)\n", ret);189 return ret;190 }191 192 last_psy_status = port->psy_status;193 last_psy_usb_type = port->psy_usb_type;194 195 switch (resp.role) {196 case USB_PD_PORT_POWER_DISCONNECTED:197 port->psy_status = POWER_SUPPLY_STATUS_NOT_CHARGING;198 port->psy_online = 0;199 break;200 case USB_PD_PORT_POWER_SOURCE:201 port->psy_status = POWER_SUPPLY_STATUS_NOT_CHARGING;202 port->psy_online = 0;203 break;204 case USB_PD_PORT_POWER_SINK:205 port->psy_status = POWER_SUPPLY_STATUS_CHARGING;206 port->psy_online = 1;207 break;208 case USB_PD_PORT_POWER_SINK_NOT_CHARGING:209 port->psy_status = POWER_SUPPLY_STATUS_NOT_CHARGING;210 port->psy_online = 1;211 break;212 default:213 dev_err(dev, "Unknown role %d\n", resp.role);214 break;215 }216 217 port->psy_voltage_max_design = resp.meas.voltage_max;218 port->psy_voltage_now = resp.meas.voltage_now;219 port->psy_current_max = resp.meas.current_max;220 port->psy_power_max = resp.max_power;221 222 switch (resp.type) {223 case USB_CHG_TYPE_BC12_SDP:224 case USB_CHG_TYPE_VBUS:225 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;226 break;227 case USB_CHG_TYPE_NONE:228 /*229 * For dual-role devices when we are a source, the firmware230 * reports the type as NONE. Report such chargers as type231 * USB_PD_DRP.232 */233 if (resp.role == USB_PD_PORT_POWER_SOURCE && resp.dualrole)234 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_PD_DRP;235 else236 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;237 break;238 case USB_CHG_TYPE_OTHER:239 case USB_CHG_TYPE_PROPRIETARY:240 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID;241 break;242 case USB_CHG_TYPE_C:243 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_C;244 break;245 case USB_CHG_TYPE_BC12_DCP:246 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;247 break;248 case USB_CHG_TYPE_BC12_CDP:249 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP;250 break;251 case USB_CHG_TYPE_PD:252 if (resp.dualrole)253 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_PD_DRP;254 else255 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_PD;256 break;257 case USB_CHG_TYPE_UNKNOWN:258 /*259 * While the EC is trying to determine the type of charger that260 * has been plugged in, it will report the charger type as261 * unknown. Additionally since the power capabilities are262 * unknown, report the max current and voltage as zero.263 */264 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;265 port->psy_voltage_max_design = 0;266 port->psy_current_max = 0;267 break;268 default:269 dev_dbg(dev, "Port %d: default case!\n", port->port_number);270 port->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;271 }272 273 if (cros_usbpd_charger_port_is_dedicated(port))274 port->psy_desc.type = POWER_SUPPLY_TYPE_MAINS;275 else276 port->psy_desc.type = POWER_SUPPLY_TYPE_USB;277 278 dev_dbg(dev,279 "Port %d: type=%d vmax=%d vnow=%d cmax=%d clim=%d pmax=%d\n",280 port->port_number, resp.type, resp.meas.voltage_max,281 resp.meas.voltage_now, resp.meas.current_max,282 resp.meas.current_lim, resp.max_power);283 284 /*285 * If power supply type or status changed, explicitly call286 * power_supply_changed. This results in udev event getting generated287 * and allows user mode apps to react quicker instead of waiting for288 * their next poll of power supply status.289 */290 if (last_psy_usb_type != port->psy_usb_type ||291 last_psy_status != port->psy_status)292 power_supply_changed(port->psy);293 294 return 0;295}296 297static int cros_usbpd_charger_get_port_status(struct port_data *port,298 bool ratelimit)299{300 int ret;301 302 if (ratelimit &&303 time_is_after_jiffies(port->last_update +304 CHARGER_CACHE_UPDATE_DELAY))305 return 0;306 307 ret = cros_usbpd_charger_get_power_info(port);308 if (ret < 0)309 return ret;310 311 if (!cros_usbpd_charger_port_is_dedicated(port))312 ret = cros_usbpd_charger_get_discovery_info(port);313 port->last_update = jiffies;314 315 return ret;316}317 318static int cros_usbpd_charger_set_ext_power_limit(struct charger_data *charger,319 u16 current_lim,320 u16 voltage_lim)321{322 struct ec_params_external_power_limit_v1 req;323 int ret;324 325 req.current_lim = current_lim;326 req.voltage_lim = voltage_lim;327 328 ret = cros_usbpd_charger_ec_command(charger, 0,329 EC_CMD_EXTERNAL_POWER_LIMIT,330 &req, sizeof(req), NULL, 0);331 if (ret < 0)332 dev_err(charger->dev,333 "Unable to set the 'External Power Limit': %d\n", ret);334 335 return ret;336}337 338static void cros_usbpd_charger_power_changed(struct power_supply *psy)339{340 struct port_data *port = power_supply_get_drvdata(psy);341 struct charger_data *charger = port->charger;342 int i;343 344 for (i = 0; i < charger->num_registered_psy; i++)345 cros_usbpd_charger_get_port_status(charger->ports[i], false);346}347 348static int cros_usbpd_charger_get_prop(struct power_supply *psy,349 enum power_supply_property psp,350 union power_supply_propval *val)351{352 struct port_data *port = power_supply_get_drvdata(psy);353 struct charger_data *charger = port->charger;354 struct cros_ec_device *ec_device = charger->ec_device;355 struct device *dev = charger->dev;356 int ret;357 358 /* Only refresh ec_port_status for dynamic properties */359 switch (psp) {360 case POWER_SUPPLY_PROP_ONLINE:361 /*362 * If mkbp_event_supported, then we can be assured that363 * the driver's state for the online property is consistent364 * with the hardware. However, if we aren't event driven,365 * the optimization before to skip an ec_port_status get366 * and only returned cached values of the online property will367 * cause a delay in detecting a cable attach until one of the368 * other properties are read.369 *370 * Allow an ec_port_status refresh for online property check371 * if we're not already online to check for plug events if372 * not mkbp_event_supported.373 */374 if (ec_device->mkbp_event_supported || port->psy_online)375 break;376 fallthrough;377 case POWER_SUPPLY_PROP_CURRENT_MAX:378 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:379 case POWER_SUPPLY_PROP_VOLTAGE_NOW:380 ret = cros_usbpd_charger_get_port_status(port, true);381 if (ret < 0) {382 dev_err(dev, "Failed to get port status (err:0x%x)\n",383 ret);384 return -EINVAL;385 }386 break;387 default:388 break;389 }390 391 switch (psp) {392 case POWER_SUPPLY_PROP_ONLINE:393 val->intval = port->psy_online;394 break;395 case POWER_SUPPLY_PROP_STATUS:396 val->intval = port->psy_status;397 break;398 case POWER_SUPPLY_PROP_CURRENT_MAX:399 val->intval = port->psy_current_max * 1000;400 break;401 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:402 val->intval = port->psy_voltage_max_design * 1000;403 break;404 case POWER_SUPPLY_PROP_VOLTAGE_NOW:405 val->intval = port->psy_voltage_now * 1000;406 break;407 case POWER_SUPPLY_PROP_USB_TYPE:408 val->intval = port->psy_usb_type;409 break;410 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:411 if (input_current_limit == EC_POWER_LIMIT_NONE)412 val->intval = -1;413 else414 val->intval = input_current_limit * 1000;415 break;416 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:417 if (input_voltage_limit == EC_POWER_LIMIT_NONE)418 val->intval = -1;419 else420 val->intval = input_voltage_limit * 1000;421 break;422 case POWER_SUPPLY_PROP_MODEL_NAME:423 val->strval = port->model_name;424 break;425 case POWER_SUPPLY_PROP_MANUFACTURER:426 val->strval = port->manufacturer;427 break;428 default:429 return -EINVAL;430 }431 432 return 0;433}434 435static int cros_usbpd_charger_set_prop(struct power_supply *psy,436 enum power_supply_property psp,437 const union power_supply_propval *val)438{439 struct port_data *port = power_supply_get_drvdata(psy);440 struct charger_data *charger = port->charger;441 struct device *dev = charger->dev;442 u16 intval;443 int ret;444 445 /* U16_MAX in mV/mA is the maximum supported value */446 if (val->intval >= U16_MAX * 1000)447 return -EINVAL;448 /* A negative number is used to clear the limit */449 if (val->intval < 0)450 intval = EC_POWER_LIMIT_NONE;451 else /* Convert from uA/uV to mA/mV */452 intval = val->intval / 1000;453 454 switch (psp) {455 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:456 ret = cros_usbpd_charger_set_ext_power_limit(charger, intval,457 input_voltage_limit);458 if (ret < 0)459 break;460 461 input_current_limit = intval;462 if (input_current_limit == EC_POWER_LIMIT_NONE)463 dev_info(dev,464 "External Current Limit cleared for all ports\n");465 else466 dev_info(dev,467 "External Current Limit set to %dmA for all ports\n",468 input_current_limit);469 break;470 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:471 ret = cros_usbpd_charger_set_ext_power_limit(charger,472 input_current_limit,473 intval);474 if (ret < 0)475 break;476 477 input_voltage_limit = intval;478 if (input_voltage_limit == EC_POWER_LIMIT_NONE)479 dev_info(dev,480 "External Voltage Limit cleared for all ports\n");481 else482 dev_info(dev,483 "External Voltage Limit set to %dmV for all ports\n",484 input_voltage_limit);485 break;486 default:487 ret = -EINVAL;488 }489 490 return ret;491}492 493static int cros_usbpd_charger_property_is_writeable(struct power_supply *psy,494 enum power_supply_property psp)495{496 int ret;497 498 switch (psp) {499 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:500 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:501 ret = 1;502 break;503 default:504 ret = 0;505 }506 507 return ret;508}509 510static int cros_usbpd_charger_ec_event(struct notifier_block *nb,511 unsigned long host_event,512 void *_notify)513{514 struct charger_data *charger = container_of(nb, struct charger_data,515 notifier);516 517 cros_usbpd_charger_power_changed(charger->ports[0]->psy);518 return NOTIFY_OK;519}520 521static void cros_usbpd_charger_unregister_notifier(void *data)522{523 struct charger_data *charger = data;524 525 cros_usbpd_unregister_notify(&charger->notifier);526}527 528static int cros_usbpd_charger_probe(struct platform_device *pd)529{530 struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);531 struct cros_ec_device *ec_device = ec_dev->ec_dev;532 struct power_supply_desc *psy_desc;533 struct device *dev = &pd->dev;534 struct charger_data *charger;535 struct power_supply *psy;536 struct port_data *port;537 int ret = -EINVAL;538 int i;539 540 charger = devm_kzalloc(dev, sizeof(struct charger_data),541 GFP_KERNEL);542 if (!charger)543 return -ENOMEM;544 545 charger->dev = dev;546 charger->ec_dev = ec_dev;547 charger->ec_device = ec_device;548 549 platform_set_drvdata(pd, charger);550 551 /*552 * We need to know the number of USB PD ports in order to know whether553 * there is a dedicated port. The dedicated port will always be554 * after the USB PD ports, and there should be only one.555 */556 charger->num_usbpd_ports =557 cros_usbpd_charger_get_usbpd_num_ports(charger);558 if (charger->num_usbpd_ports <= 0) {559 /*560 * This can happen on a system that doesn't support USB PD.561 * Log a message, but no need to warn.562 */563 dev_info(dev, "No USB PD charging ports found\n");564 }565 566 charger->num_charger_ports = cros_usbpd_charger_get_num_ports(charger);567 if (charger->num_charger_ports < 0) {568 /*569 * This can happen on a system that doesn't support USB PD.570 * Log a message, but no need to warn.571 * Older ECs do not support the above command, in that case572 * let's set up the number of charger ports equal to the number573 * of USB PD ports574 */575 dev_info(dev, "Could not get charger port count\n");576 charger->num_charger_ports = charger->num_usbpd_ports;577 }578 579 if (charger->num_charger_ports <= 0) {580 /*581 * This can happen on a system that doesn't support USB PD and582 * doesn't have a dedicated port.583 * Log a message, but no need to warn.584 */585 dev_info(dev, "No charging ports found\n");586 ret = -ENODEV;587 goto fail_nowarn;588 }589 590 /*591 * Sanity checks on the number of ports:592 * there should be at most 1 dedicated port593 */594 if (charger->num_charger_ports < charger->num_usbpd_ports ||595 charger->num_charger_ports > (charger->num_usbpd_ports + 1)) {596 dev_err(dev, "Unexpected number of charge port count\n");597 ret = -EPROTO;598 goto fail_nowarn;599 }600 601 for (i = 0; i < charger->num_charger_ports; i++) {602 struct power_supply_config psy_cfg = {};603 604 port = devm_kzalloc(dev, sizeof(struct port_data), GFP_KERNEL);605 if (!port) {606 ret = -ENOMEM;607 goto fail;608 }609 610 port->charger = charger;611 port->port_number = i;612 613 psy_desc = &port->psy_desc;614 psy_desc->get_property = cros_usbpd_charger_get_prop;615 psy_desc->set_property = cros_usbpd_charger_set_prop;616 psy_desc->property_is_writeable =617 cros_usbpd_charger_property_is_writeable;618 psy_desc->external_power_changed =619 cros_usbpd_charger_power_changed;620 psy_cfg.drv_data = port;621 622 if (cros_usbpd_charger_port_is_dedicated(port)) {623 sprintf(port->name, CHARGER_DEDICATED_DIR_NAME);624 psy_desc->type = POWER_SUPPLY_TYPE_MAINS;625 psy_desc->properties =626 cros_usbpd_dedicated_charger_props;627 psy_desc->num_properties =628 ARRAY_SIZE(cros_usbpd_dedicated_charger_props);629 } else {630 sprintf(port->name, CHARGER_USBPD_DIR_NAME, i);631 psy_desc->type = POWER_SUPPLY_TYPE_USB;632 psy_desc->properties = cros_usbpd_charger_props;633 psy_desc->num_properties =634 ARRAY_SIZE(cros_usbpd_charger_props);635 psy_desc->usb_types = BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN) |636 BIT(POWER_SUPPLY_USB_TYPE_SDP) |637 BIT(POWER_SUPPLY_USB_TYPE_DCP) |638 BIT(POWER_SUPPLY_USB_TYPE_CDP) |639 BIT(POWER_SUPPLY_USB_TYPE_C) |640 BIT(POWER_SUPPLY_USB_TYPE_PD) |641 BIT(POWER_SUPPLY_USB_TYPE_PD_DRP) |642 BIT(POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID);643 }644 645 psy_desc->name = port->name;646 647 psy = devm_power_supply_register_no_ws(dev, psy_desc,648 &psy_cfg);649 if (IS_ERR(psy)) {650 dev_err(dev, "Failed to register power supply\n");651 continue;652 }653 port->psy = psy;654 655 charger->ports[charger->num_registered_psy++] = port;656 }657 658 if (!charger->num_registered_psy) {659 ret = -ENODEV;660 dev_err(dev, "No power supplies registered\n");661 goto fail;662 }663 664 /* Get PD events from the EC */665 charger->notifier.notifier_call = cros_usbpd_charger_ec_event;666 ret = cros_usbpd_register_notify(&charger->notifier);667 if (ret < 0) {668 dev_warn(dev, "failed to register notifier\n");669 } else {670 ret = devm_add_action_or_reset(dev,671 cros_usbpd_charger_unregister_notifier,672 charger);673 if (ret < 0)674 goto fail;675 }676 677 return 0;678 679fail:680 WARN(1, "%s: Failing probe (err:0x%x)\n", dev_name(dev), ret);681 682fail_nowarn:683 dev_info(dev, "Failing probe (err:0x%x)\n", ret);684 return ret;685}686 687#ifdef CONFIG_PM_SLEEP688static int cros_usbpd_charger_resume(struct device *dev)689{690 struct charger_data *charger = dev_get_drvdata(dev);691 int i;692 693 if (!charger)694 return 0;695 696 for (i = 0; i < charger->num_registered_psy; i++) {697 power_supply_changed(charger->ports[i]->psy);698 charger->ports[i]->last_update =699 jiffies - CHARGER_CACHE_UPDATE_DELAY;700 }701 702 return 0;703}704#endif705 706static SIMPLE_DEV_PM_OPS(cros_usbpd_charger_pm_ops, NULL,707 cros_usbpd_charger_resume);708 709static const struct platform_device_id cros_usbpd_charger_id[] = {710 { DRV_NAME, 0 },711 {}712};713MODULE_DEVICE_TABLE(platform, cros_usbpd_charger_id);714 715static struct platform_driver cros_usbpd_charger_driver = {716 .driver = {717 .name = DRV_NAME,718 .pm = &cros_usbpd_charger_pm_ops,719 },720 .probe = cros_usbpd_charger_probe,721 .id_table = cros_usbpd_charger_id,722};723 724module_platform_driver(cros_usbpd_charger_driver);725 726MODULE_LICENSE("GPL");727MODULE_DESCRIPTION("ChromeOS EC USBPD charger");728