linux/drivers/power/supply/cros_usbpd-charger.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 …
#define CHARGER_DEDICATED_DIR_NAME …
#define CHARGER_DIR_NAME_LENGTH …
#define CHARGER_CACHE_UPDATE_DELAY …
#define CHARGER_MANUFACTURER_MODEL_LENGTH …

#define DRV_NAME …

struct port_data { … };

struct charger_data { … };

static enum power_supply_property cros_usbpd_charger_props[] = …;

static enum power_supply_property cros_usbpd_dedicated_charger_props[] = …;

static enum power_supply_usb_type cros_usbpd_charger_usb_types[] = …;

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

static bool cros_usbpd_charger_port_is_dedicated(struct port_data *port)
{ … }

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)
{ … }

static int cros_usbpd_charger_get_num_ports(struct charger_data *charger)
{ … }

static int cros_usbpd_charger_get_usbpd_num_ports(struct charger_data *charger)
{ … }

static int cros_usbpd_charger_get_discovery_info(struct port_data *port)
{ … }

static int cros_usbpd_charger_get_power_info(struct port_data *port)
{ … }

static int cros_usbpd_charger_get_port_status(struct port_data *port,
					      bool ratelimit)
{ … }

static int cros_usbpd_charger_set_ext_power_limit(struct charger_data *charger,
						  u16 current_lim,
						  u16 voltage_lim)
{ … }

static void cros_usbpd_charger_power_changed(struct power_supply *psy)
{ … }

static int cros_usbpd_charger_get_prop(struct power_supply *psy,
				       enum power_supply_property psp,
				       union power_supply_propval *val)
{ … }

static int cros_usbpd_charger_set_prop(struct power_supply *psy,
				       enum power_supply_property psp,
				       const union power_supply_propval *val)
{ … }

static int cros_usbpd_charger_property_is_writeable(struct power_supply *psy,
						enum power_supply_property psp)
{ … }

static int cros_usbpd_charger_ec_event(struct notifier_block *nb,
				       unsigned long host_event,
				       void *_notify)
{ … }

static void cros_usbpd_charger_unregister_notifier(void *data)
{ … }

static int cros_usbpd_charger_probe(struct platform_device *pd)
{ … }

#ifdef CONFIG_PM_SLEEP
static int cros_usbpd_charger_resume(struct device *dev)
{ … }
#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[] = …;
MODULE_DEVICE_TABLE(platform, cros_usbpd_charger_id);

static struct platform_driver cros_usbpd_charger_driver = …;

module_platform_driver(…) …;

MODULE_LICENSE(…) …;
MODULE_DESCRIPTION(…) …;