Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 726 insertions, 0 deletions

diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
new file mode 100644
index 000000000..cadb6a0c2
--- /dev/null
+++ b/drivers/power/supply/cros_usbpd-charger.c
@@ -0,0 +1,726 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Power supply driver for ChromeOS EC based USB PD Charger.
+ *
+ * Copyright (c) 2014 - 2018 Google, Inc
+ */
+
+#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,
+};
+
+static enum power_supply_usb_type cros_usbpd_charger_usb_types[] = {
+	POWER_SUPPLY_USB_TYPE_UNKNOWN,
+	POWER_SUPPLY_USB_TYPE_SDP,
+	POWER_SUPPLY_USB_TYPE_DCP,
+	POWER_SUPPLY_USB_TYPE_CDP,
+	POWER_SUPPLY_USB_TYPE_C,
+	POWER_SUPPLY_USB_TYPE_PD,
+	POWER_SUPPLY_USB_TYPE_PD_DRP,
+	POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID
+};
+
+/* 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_err(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;
+
+		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 = cros_usbpd_charger_usb_types;
+			psy_desc->num_usb_types =
+				ARRAY_SIZE(cros_usbpd_charger_usb_types);
+		}
+
+		psy_desc->name = port->name;
+
+		psy = devm_power_supply_register_no_ws(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 struct platform_driver cros_usbpd_charger_driver = {
+	.driver = {
+		.name = DRV_NAME,
+		.pm = &cros_usbpd_charger_pm_ops,
+	},
+	.probe = cros_usbpd_charger_probe
+};
+
+module_platform_driver(cros_usbpd_charger_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ChromeOS EC USBPD charger");
+MODULE_ALIAS("platform:" DRV_NAME);