// 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_flex(*msg, data, max(outsize, insize));
        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");