Quelle  cros_usbpd-charger.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0+
/*
 * Power supply driver for ChromeOS EC based USB PD Charger.
 *
 * Copyright (c) 2014 - 2018 Google, Inc
 */

#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_data/cros_ec_commands.h>
#include <linux/platform_data/cros_ec_proto.h>
#include <linux/platform_data/cros_usbpd_notify.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/slab.h>

#define CHARGER_USBPD_DIR_NAME   "CROS_USBPD_CHARGER%d"
#define CHARGER_DEDICATED_DIR_NAME  "CROS_DEDICATED_CHARGER"
#define CHARGER_DIR_NAME_LENGTH  (sizeof(CHARGER_USBPD_DIR_NAME) >= \
      sizeof(CHARGER_DEDICATED_DIR_NAME) ? \
      sizeof(CHARGER_USBPD_DIR_NAME) : \
      sizeof(CHARGER_DEDICATED_DIR_NAME))
#define CHARGER_CACHE_UPDATE_DELAY  msecs_to_jiffies(500)
#define CHARGER_MANUFACTURER_MODEL_LENGTH 32

#define DRV_NAME "cros-usbpd-charger"

struct port_data {
 int port_number;
 char name[CHARGER_DIR_NAME_LENGTH];
 char manufacturer[CHARGER_MANUFACTURER_MODEL_LENGTH];
 char model_name[CHARGER_MANUFACTURER_MODEL_LENGTH];
 struct power_supply *psy;
 struct power_supply_desc psy_desc;
 int psy_usb_type;
 int psy_online;
 int psy_status;
 int psy_current_max;
 int psy_voltage_max_design;
 int psy_voltage_now;
 int psy_power_max;
 struct charger_data *charger;
 unsigned long last_update;
};

struct charger_data {
 struct device *dev;
 struct cros_ec_dev *ec_dev;
 struct cros_ec_device *ec_device;
 int num_charger_ports;
 int num_usbpd_ports;
 int num_registered_psy;
 struct port_data *ports[EC_USB_PD_MAX_PORTS];
 struct notifier_block notifier;
};

static enum power_supply_property cros_usbpd_charger_props[] = {
 POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
 POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
 POWER_SUPPLY_PROP_ONLINE,
 POWER_SUPPLY_PROP_STATUS,
 POWER_SUPPLY_PROP_CURRENT_MAX,
 POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
 POWER_SUPPLY_PROP_VOLTAGE_NOW,
 POWER_SUPPLY_PROP_MODEL_NAME,
 POWER_SUPPLY_PROP_MANUFACTURER,
 POWER_SUPPLY_PROP_USB_TYPE
};

static enum power_supply_property cros_usbpd_dedicated_charger_props[] = {
 POWER_SUPPLY_PROP_ONLINE,
 POWER_SUPPLY_PROP_STATUS,
 POWER_SUPPLY_PROP_VOLTAGE_NOW,
};

/* Input voltage/current limit in mV/mA. Default to none. */
static u16 input_voltage_limit = EC_POWER_LIMIT_NONE;
static u16 input_current_limit = EC_POWER_LIMIT_NONE;

static bool cros_usbpd_charger_port_is_dedicated(struct port_data *port)
{
 return port->port_number >= port->charger->num_usbpd_ports;
}

static int cros_usbpd_charger_ec_command(struct charger_data *charger,
      unsigned int version,
      unsigned int command,
      void *outdata,
      unsigned int outsize,
      void *indata,
      unsigned int insize)
{
 struct cros_ec_dev *ec_dev = charger->ec_dev;
 struct cros_ec_command *msg;
 int ret;

 msg = kzalloc(struct_size(msg, data, max(outsize, insize)), GFP_KERNEL);
 if (!msg)
  return -ENOMEM;

 msg->version = version;
 msg->command = ec_dev->cmd_offset + command;
 msg->outsize = outsize;
 msg->insize = insize;

 if (outsize)
  memcpy(msg->data, outdata, outsize);

 ret = cros_ec_cmd_xfer_status(charger->ec_device, msg);
 if (ret >= 0 && insize)
  memcpy(indata, msg->data, insize);

 kfree(msg);
 return ret;
}

static int cros_usbpd_charger_get_num_ports(struct charger_data *charger)
{
 struct ec_response_charge_port_count resp;
 int ret;

 ret = cros_usbpd_charger_ec_command(charger, 0,
         EC_CMD_CHARGE_PORT_COUNT,
         NULL, 0, &resp, sizeof(resp));
 if (ret < 0)
  return ret;

 return resp.port_count;
}

static int cros_usbpd_charger_get_usbpd_num_ports(struct charger_data *charger)
{
 struct ec_response_usb_pd_ports resp;
 int ret;

 ret = cros_usbpd_charger_ec_command(charger, 0, EC_CMD_USB_PD_PORTS,
         NULL, 0, &resp, sizeof(resp));
 if (ret < 0)
  return ret;

 return resp.num_ports;
}

static int cros_usbpd_charger_get_discovery_info(struct port_data *port)
{
 struct charger_data *charger = port->charger;
 struct ec_params_usb_pd_discovery_entry resp;
 struct ec_params_usb_pd_info_request req;
 int ret;

 req.port = port->port_number;

 ret = cros_usbpd_charger_ec_command(charger, 0,
         EC_CMD_USB_PD_DISCOVERY,
         &req, sizeof(req),
         &resp, sizeof(resp));
 if (ret < 0) {
  dev_err(charger->dev,
   "Unable to query discovery info (err:0x%x)\n", ret);
  return ret;
 }

 dev_dbg(charger->dev, "Port %d: VID = 0x%x, PID=0x%x, PTYPE=0x%x\n",
  port->port_number, resp.vid, resp.pid, resp.ptype);

 snprintf(port->manufacturer, sizeof(port->manufacturer), "%x",
   resp.vid);
 snprintf(port->model_name, sizeof(port->model_name), "%x", resp.pid);

 return 0;
}

static int cros_usbpd_charger_get_power_info(struct port_data *port)
{
 struct charger_data *charger = port->charger;
 struct ec_response_usb_pd_power_info resp;
 struct ec_params_usb_pd_power_info req;
 int last_psy_status, last_psy_usb_type;
 struct device *dev = charger->dev;
 int ret;

 req.port = port->port_number;
 ret = cros_usbpd_charger_ec_command(charger, 0,
         EC_CMD_USB_PD_POWER_INFO,
         &req, sizeof(req),
         &resp, sizeof(resp));
 if (ret < 0) {
  dev_err(dev, "Unable to query PD power info (err:0x%x)\n", ret);
  return ret;
 }

 last_psy_status = port->psy_status;
 last_psy_usb_type = port->psy_usb_type;

 switch (resp.role) {
 case USB_PD_PORT_POWER_DISCONNECTED:
  port->psy_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
  port->psy_online = 0;
  break;
 case USB_PD_PORT_POWER_SOURCE:
  port->psy_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
  port->psy_online = 0;
  break;
 case USB_PD_PORT_POWER_SINK:
  port->psy_status = POWER_SUPPLY_STATUS_CHARGING;
  port->psy_online = 1;
  break;
 case USB_PD_PORT_POWER_SINK_NOT_CHARGING:
  port->psy_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
  port->psy_online = 1;
  break;
 default:
  dev_err(dev, "Unknown role %d\n", resp.role);
  break;
 }

 port->psy_voltage_max_design = resp.meas.voltage_max;
 port->psy_voltage_now = resp.meas.voltage_now;
 port->psy_current_max = resp.meas.current_max;
 port->psy_power_max = resp.max_power;

 switch (resp.type) {
 case USB_CHG_TYPE_BC12_SDP:
 case USB_CHG_TYPE_VBUS:
  port->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
  break;
 case USB_CHG_TYPE_NONE:
  /*
 * For dual-role devices when we are a source, the firmware
 * reports the type as NONE. Report such chargers as type
 * USB_PD_DRP.
 */
  if (resp.role == USB_PD_PORT_POWER_SOURCE && resp.dualrole)
   port->psy_usb_type = POWER_SUPPLY_USB_TYPE_PD_DRP;
  else
   port->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
  break;
 case USB_CHG_TYPE_OTHER:
 case USB_CHG_TYPE_PROPRIETARY:
  port->psy_usb_type = POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID;
  break;
 case USB_CHG_TYPE_C:
  port->psy_usb_type = POWER_SUPPLY_USB_TYPE_C;
  break;
 case USB_CHG_TYPE_BC12_DCP:
  port->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
  break;
 case USB_CHG_TYPE_BC12_CDP:
  port->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP;
  break;
 case USB_CHG_TYPE_PD:
  if (resp.dualrole)
   port->psy_usb_type = POWER_SUPPLY_USB_TYPE_PD_DRP;
  else
   port->psy_usb_type = POWER_SUPPLY_USB_TYPE_PD;
  break;
 case USB_CHG_TYPE_UNKNOWN:
  /*
 * While the EC is trying to determine the type of charger that
 * has been plugged in, it will report the charger type as
 * unknown. Additionally since the power capabilities are
 * unknown, report the max current and voltage as zero.
 */
  port->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
  port->psy_voltage_max_design = 0;
  port->psy_current_max = 0;
  break;
 default:
  dev_dbg(dev, "Port %d: default case!\n", port->port_number);
  port->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
 }

 if (cros_usbpd_charger_port_is_dedicated(port))
  port->psy_desc.type = POWER_SUPPLY_TYPE_MAINS;
 else
  port->psy_desc.type = POWER_SUPPLY_TYPE_USB;

 dev_dbg(dev,
  "Port %d: type=%d vmax=%d vnow=%d cmax=%d clim=%d pmax=%d\n",
  port->port_number, resp.type, resp.meas.voltage_max,
  resp.meas.voltage_now, resp.meas.current_max,
  resp.meas.current_lim, resp.max_power);

 /*
 * If power supply type or status changed, explicitly call
 * power_supply_changed. This results in udev event getting generated
 * and allows user mode apps to react quicker instead of waiting for
 * their next poll of power supply status.
 */
 if (last_psy_usb_type != port->psy_usb_type ||
     last_psy_status != port->psy_status)
  power_supply_changed(port->psy);

 return 0;
}

static int cros_usbpd_charger_get_port_status(struct port_data *port,
           bool ratelimit)
{
 int ret;

 if (ratelimit &&
     time_is_after_jiffies(port->last_update +
      CHARGER_CACHE_UPDATE_DELAY))
  return 0;

 ret = cros_usbpd_charger_get_power_info(port);
 if (ret < 0)
  return ret;

 if (!cros_usbpd_charger_port_is_dedicated(port))
  ret = cros_usbpd_charger_get_discovery_info(port);
 port->last_update = jiffies;

 return ret;
}

static int cros_usbpd_charger_set_ext_power_limit(struct charger_data *charger,
        u16 current_lim,
        u16 voltage_lim)
{
 struct ec_params_external_power_limit_v1 req;
 int ret;

 req.current_lim = current_lim;
 req.voltage_lim = voltage_lim;

 ret = cros_usbpd_charger_ec_command(charger, 0,
         EC_CMD_EXTERNAL_POWER_LIMIT,
         &req, sizeof(req), NULL, 0);
 if (ret < 0)
  dev_err(charger->dev,
   "Unable to set the 'External Power Limit': %d\n", ret);

 return ret;
}

static void cros_usbpd_charger_power_changed(struct power_supply *psy)
{
 struct port_data *port = power_supply_get_drvdata(psy);
 struct charger_data *charger = port->charger;
 int i;

 for (i = 0; i < charger->num_registered_psy; i++)
  cros_usbpd_charger_get_port_status(charger->ports[i], false);
}

static int cros_usbpd_charger_get_prop(struct power_supply *psy,
           enum power_supply_property psp,
           union power_supply_propval *val)
{
 struct port_data *port = power_supply_get_drvdata(psy);
 struct charger_data *charger = port->charger;
 struct cros_ec_device *ec_device = charger->ec_device;
 struct device *dev = charger->dev;
 int ret;

 /* Only refresh ec_port_status for dynamic properties */
 switch (psp) {
 case POWER_SUPPLY_PROP_ONLINE:
  /*
 * If mkbp_event_supported, then we can be assured that
 * the driver's state for the online property is consistent
 * with the hardware. However, if we aren't event driven,
 * the optimization before to skip an ec_port_status get
 * and only returned cached values of the online property will
 * cause a delay in detecting a cable attach until one of the
 * other properties are read.
 *
 * Allow an ec_port_status refresh for online property check
 * if we're not already online to check for plug events if
 * not mkbp_event_supported.
 */
  if (ec_device->mkbp_event_supported || port->psy_online)
   break;
  fallthrough;
 case POWER_SUPPLY_PROP_CURRENT_MAX:
 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
  ret = cros_usbpd_charger_get_port_status(port, true);
  if (ret < 0) {
   dev_err(dev, "Failed to get port status (err:0x%x)\n",
    ret);
   return -EINVAL;
  }
  break;
 default:
  break;
 }

 switch (psp) {
 case POWER_SUPPLY_PROP_ONLINE:
  val->intval = port->psy_online;
  break;
 case POWER_SUPPLY_PROP_STATUS:
  val->intval = port->psy_status;
  break;
 case POWER_SUPPLY_PROP_CURRENT_MAX:
  val->intval = port->psy_current_max * 1000;
  break;
 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
  val->intval = port->psy_voltage_max_design * 1000;
  break;
 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
  val->intval = port->psy_voltage_now * 1000;
  break;
 case POWER_SUPPLY_PROP_USB_TYPE:
  val->intval = port->psy_usb_type;
  break;
 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
  if (input_current_limit == EC_POWER_LIMIT_NONE)
   val->intval = -1;
  else
   val->intval = input_current_limit * 1000;
  break;
 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
  if (input_voltage_limit == EC_POWER_LIMIT_NONE)
   val->intval = -1;
  else
   val->intval = input_voltage_limit * 1000;
  break;
 case POWER_SUPPLY_PROP_MODEL_NAME:
  val->strval = port->model_name;
  break;
 case POWER_SUPPLY_PROP_MANUFACTURER:
  val->strval = port->manufacturer;
  break;
 default:
  return -EINVAL;
 }

 return 0;
}

static int cros_usbpd_charger_set_prop(struct power_supply *psy,
           enum power_supply_property psp,
           const union power_supply_propval *val)
{
 struct port_data *port = power_supply_get_drvdata(psy);
 struct charger_data *charger = port->charger;
 struct device *dev = charger->dev;
 u16 intval;
 int ret;

 /* U16_MAX in mV/mA is the maximum supported value */
 if (val->intval >= U16_MAX * 1000)
  return -EINVAL;
 /* A negative number is used to clear the limit */
 if (val->intval < 0)
  intval = EC_POWER_LIMIT_NONE;
 else /* Convert from uA/uV to mA/mV */
  intval = val->intval / 1000;

 switch (psp) {
 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
  ret = cros_usbpd_charger_set_ext_power_limit(charger, intval,
       input_voltage_limit);
  if (ret < 0)
   break;

  input_current_limit = intval;
  if (input_current_limit == EC_POWER_LIMIT_NONE)
   dev_info(dev,
     "External Current Limit cleared for all ports\n");
  else
   dev_info(dev,
     "External Current Limit set to %dmA for all ports\n",
     input_current_limit);
  break;
 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
  ret = cros_usbpd_charger_set_ext_power_limit(charger,
       input_current_limit,
       intval);
  if (ret < 0)
   break;

  input_voltage_limit = intval;
  if (input_voltage_limit == EC_POWER_LIMIT_NONE)
   dev_info(dev,
     "External Voltage Limit cleared for all ports\n");
  else
   dev_info(dev,
     "External Voltage Limit set to %dmV for all ports\n",
     input_voltage_limit);
  break;
 default:
  ret = -EINVAL;
 }

 return ret;
}

static int cros_usbpd_charger_property_is_writeable(struct power_supply *psy,
      enum power_supply_property psp)
{
 int ret;

 switch (psp) {
 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
  ret = 1;
  break;
 default:
  ret = 0;
 }

 return ret;
}

static int cros_usbpd_charger_ec_event(struct notifier_block *nb,
           unsigned long host_event,
           void *_notify)
{
 struct charger_data *charger = container_of(nb, struct charger_data,
          notifier);

 cros_usbpd_charger_power_changed(charger->ports[0]->psy);
 return NOTIFY_OK;
}

static void cros_usbpd_charger_unregister_notifier(void *data)
{
 struct charger_data *charger = data;

 cros_usbpd_unregister_notify(&charger->notifier);
}

static int cros_usbpd_charger_probe(struct platform_device *pd)
{
 struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);
 struct cros_ec_device *ec_device = ec_dev->ec_dev;
 struct power_supply_desc *psy_desc;
 struct device *dev = &pd->dev;
 struct charger_data *charger;
 struct power_supply *psy;
 struct port_data *port;
 int ret = -EINVAL;
 int i;

 charger = devm_kzalloc(dev, sizeof(struct charger_data),
          GFP_KERNEL);
 if (!charger)
  return -ENOMEM;

 charger->dev = dev;
 charger->ec_dev = ec_dev;
 charger->ec_device = ec_device;

 platform_set_drvdata(pd, charger);

 /*
 * We need to know the number of USB PD ports in order to know whether
 * there is a dedicated port. The dedicated port will always be
 * after the USB PD ports, and there should be only one.
 */
 charger->num_usbpd_ports =
  cros_usbpd_charger_get_usbpd_num_ports(charger);
 if (charger->num_usbpd_ports <= 0) {
  /*
 * This can happen on a system that doesn't support USB PD.
 * Log a message, but no need to warn.
 */
  dev_info(dev, "No USB PD charging ports found\n");
 }

 charger->num_charger_ports = cros_usbpd_charger_get_num_ports(charger);
 if (charger->num_charger_ports < 0) {
  /*
 * This can happen on a system that doesn't support USB PD.
 * Log a message, but no need to warn.
 * Older ECs do not support the above command, in that case
 * let's set up the number of charger ports equal to the number
 * of USB PD ports
 */
  dev_info(dev, "Could not get charger port count\n");
  charger->num_charger_ports = charger->num_usbpd_ports;
 }

 if (charger->num_charger_ports <= 0) {
  /*
 * This can happen on a system that doesn't support USB PD and
 * doesn't have a dedicated port.
 * Log a message, but no need to warn.
 */
  dev_info(dev, "No charging ports found\n");
  ret = -ENODEV;
  goto fail_nowarn;
 }

 /*
 * Sanity checks on the number of ports:
 *  there should be at most 1 dedicated port
 */
 if (charger->num_charger_ports < charger->num_usbpd_ports ||
     charger->num_charger_ports > (charger->num_usbpd_ports + 1)) {
  dev_err(dev, "Unexpected number of charge port count\n");
  ret = -EPROTO;
  goto fail_nowarn;
 }

 for (i = 0; i < charger->num_charger_ports; i++) {
  struct power_supply_config psy_cfg = {};

  port = devm_kzalloc(dev, sizeof(struct port_data), GFP_KERNEL);
  if (!port) {
   ret = -ENOMEM;
   goto fail;
  }

  port->charger = charger;
  port->port_number = i;

  psy_desc = &port->psy_desc;
  psy_desc->get_property = cros_usbpd_charger_get_prop;
  psy_desc->set_property = cros_usbpd_charger_set_prop;
  psy_desc->property_is_writeable =
    cros_usbpd_charger_property_is_writeable;
  psy_desc->external_power_changed =
     cros_usbpd_charger_power_changed;
  psy_cfg.drv_data = port;
  psy_cfg.no_wakeup_source = true;

  if (cros_usbpd_charger_port_is_dedicated(port)) {
   sprintf(port->name, CHARGER_DEDICATED_DIR_NAME);
   psy_desc->type = POWER_SUPPLY_TYPE_MAINS;
   psy_desc->properties =
    cros_usbpd_dedicated_charger_props;
   psy_desc->num_properties =
    ARRAY_SIZE(cros_usbpd_dedicated_charger_props);
  } else {
   sprintf(port->name, CHARGER_USBPD_DIR_NAME, i);
   psy_desc->type = POWER_SUPPLY_TYPE_USB;
   psy_desc->properties = cros_usbpd_charger_props;
   psy_desc->num_properties =
    ARRAY_SIZE(cros_usbpd_charger_props);
   psy_desc->usb_types = BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN) |
           BIT(POWER_SUPPLY_USB_TYPE_SDP)     |
           BIT(POWER_SUPPLY_USB_TYPE_DCP)     |
           BIT(POWER_SUPPLY_USB_TYPE_CDP)     |
           BIT(POWER_SUPPLY_USB_TYPE_C)       |
           BIT(POWER_SUPPLY_USB_TYPE_PD)      |
           BIT(POWER_SUPPLY_USB_TYPE_PD_DRP)  |
           BIT(POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID);
  }

  psy_desc->name = port->name;

  psy = devm_power_supply_register(dev, psy_desc, &psy_cfg);
  if (IS_ERR(psy)) {
   dev_err(dev, "Failed to register power supply\n");
   continue;
  }
  port->psy = psy;

  charger->ports[charger->num_registered_psy++] = port;
 }

 if (!charger->num_registered_psy) {
  ret = -ENODEV;
  dev_err(dev, "No power supplies registered\n");
  goto fail;
 }

 /* Get PD events from the EC */
 charger->notifier.notifier_call = cros_usbpd_charger_ec_event;
 ret = cros_usbpd_register_notify(&charger->notifier);
 if (ret < 0) {
  dev_warn(dev, "failed to register notifier\n");
 } else {
  ret = devm_add_action_or_reset(dev,
    cros_usbpd_charger_unregister_notifier,
    charger);
  if (ret < 0)
   goto fail;
 }

 return 0;

fail:
 WARN(1, "%s: Failing probe (err:0x%x)\n", dev_name(dev), ret);

fail_nowarn:
 dev_info(dev, "Failing probe (err:0x%x)\n", ret);
 return ret;
}

#ifdef CONFIG_PM_SLEEP
static int cros_usbpd_charger_resume(struct device *dev)
{
 struct charger_data *charger = dev_get_drvdata(dev);
 int i;

 if (!charger)
  return 0;

 for (i = 0; i < charger->num_registered_psy; i++) {
  power_supply_changed(charger->ports[i]->psy);
  charger->ports[i]->last_update =
    jiffies - CHARGER_CACHE_UPDATE_DELAY;
 }

 return 0;
}
#endif

static SIMPLE_DEV_PM_OPS(cros_usbpd_charger_pm_ops, NULL,
    cros_usbpd_charger_resume);

static const struct platform_device_id cros_usbpd_charger_id[] = {
 { DRV_NAME, 0 },
 {}
};
MODULE_DEVICE_TABLE(platform, cros_usbpd_charger_id);

static struct platform_driver cros_usbpd_charger_driver = {
 .driver = {
  .name = DRV_NAME,
  .pm = &cros_usbpd_charger_pm_ops,
 },
 .probe = cros_usbpd_charger_probe,
 .id_table = cros_usbpd_charger_id,
};

module_platform_driver(cros_usbpd_charger_driver);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("ChromeOS EC USBPD charger");