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, 435 insertions, 0 deletions

diff --git a/drivers/usb/typec/wusb3801.c b/drivers/usb/typec/wusb3801.c
new file mode 100644
index 000000000..a43a18d4b
--- /dev/null
+++ b/drivers/usb/typec/wusb3801.c
@@ -0,0 +1,435 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Willsemi WUSB3801 Type-C port controller driver
+ *
+ * Copyright (C) 2022 Samuel Holland <samuel@sholland.org>
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/usb/typec.h>
+
+#define WUSB3801_REG_DEVICE_ID		0x01
+#define WUSB3801_REG_CTRL0		0x02
+#define WUSB3801_REG_INT		0x03
+#define WUSB3801_REG_STAT		0x04
+#define WUSB3801_REG_CTRL1		0x05
+#define WUSB3801_REG_TEST00		0x06
+#define WUSB3801_REG_TEST01		0x07
+#define WUSB3801_REG_TEST02		0x08
+#define WUSB3801_REG_TEST03		0x09
+#define WUSB3801_REG_TEST04		0x0a
+#define WUSB3801_REG_TEST05		0x0b
+#define WUSB3801_REG_TEST06		0x0c
+#define WUSB3801_REG_TEST07		0x0d
+#define WUSB3801_REG_TEST08		0x0e
+#define WUSB3801_REG_TEST09		0x0f
+#define WUSB3801_REG_TEST0A		0x10
+#define WUSB3801_REG_TEST0B		0x11
+#define WUSB3801_REG_TEST0C		0x12
+#define WUSB3801_REG_TEST0D		0x13
+#define WUSB3801_REG_TEST0E		0x14
+#define WUSB3801_REG_TEST0F		0x15
+#define WUSB3801_REG_TEST10		0x16
+#define WUSB3801_REG_TEST11		0x17
+#define WUSB3801_REG_TEST12		0x18
+
+#define WUSB3801_DEVICE_ID_VERSION_ID	GENMASK(7, 3)
+#define WUSB3801_DEVICE_ID_VENDOR_ID	GENMASK(2, 0)
+
+#define WUSB3801_CTRL0_DIS_ACC_SUPPORT	BIT(7)
+#define WUSB3801_CTRL0_TRY		GENMASK(6, 5)
+#define WUSB3801_CTRL0_TRY_NONE		(0x0 << 5)
+#define WUSB3801_CTRL0_TRY_SNK		(0x1 << 5)
+#define WUSB3801_CTRL0_TRY_SRC		(0x2 << 5)
+#define WUSB3801_CTRL0_CURRENT		GENMASK(4, 3) /* SRC */
+#define WUSB3801_CTRL0_CURRENT_DEFAULT	(0x0 << 3)
+#define WUSB3801_CTRL0_CURRENT_1_5A	(0x1 << 3)
+#define WUSB3801_CTRL0_CURRENT_3_0A	(0x2 << 3)
+#define WUSB3801_CTRL0_ROLE		GENMASK(2, 1)
+#define WUSB3801_CTRL0_ROLE_SNK		(0x0 << 1)
+#define WUSB3801_CTRL0_ROLE_SRC		(0x1 << 1)
+#define WUSB3801_CTRL0_ROLE_DRP		(0x2 << 1)
+#define WUSB3801_CTRL0_INT_MASK		BIT(0)
+
+#define WUSB3801_INT_ATTACHED		BIT(0)
+#define WUSB3801_INT_DETACHED		BIT(1)
+
+#define WUSB3801_STAT_VBUS_DETECTED	BIT(7)
+#define WUSB3801_STAT_CURRENT		GENMASK(6, 5) /* SNK */
+#define WUSB3801_STAT_CURRENT_STANDBY	(0x0 << 5)
+#define WUSB3801_STAT_CURRENT_DEFAULT	(0x1 << 5)
+#define WUSB3801_STAT_CURRENT_1_5A	(0x2 << 5)
+#define WUSB3801_STAT_CURRENT_3_0A	(0x3 << 5)
+#define WUSB3801_STAT_PARTNER		GENMASK(4, 2)
+#define WUSB3801_STAT_PARTNER_STANDBY	(0x0 << 2)
+#define WUSB3801_STAT_PARTNER_SNK	(0x1 << 2)
+#define WUSB3801_STAT_PARTNER_SRC	(0x2 << 2)
+#define WUSB3801_STAT_PARTNER_AUDIO	(0x3 << 2)
+#define WUSB3801_STAT_PARTNER_DEBUG	(0x4 << 2)
+#define WUSB3801_STAT_ORIENTATION	GENMASK(1, 0)
+#define WUSB3801_STAT_ORIENTATION_NONE	(0x0 << 0)
+#define WUSB3801_STAT_ORIENTATION_CC1	(0x1 << 0)
+#define WUSB3801_STAT_ORIENTATION_CC2	(0x2 << 0)
+#define WUSB3801_STAT_ORIENTATION_BOTH	(0x3 << 0)
+
+#define WUSB3801_CTRL1_SM_RESET		BIT(0)
+
+#define WUSB3801_TEST01_VENDOR_SUB_ID	(BIT(8) | BIT(6))
+
+#define WUSB3801_TEST02_FORCE_ERR_RCY	BIT(8)
+
+#define WUSB3801_TEST0A_WAIT_VBUS	BIT(5)
+
+struct wusb3801 {
+	struct typec_capability	cap;
+	struct device		*dev;
+	struct typec_partner	*partner;
+	struct typec_port	*port;
+	struct regmap		*regmap;
+	struct regulator	*vbus_supply;
+	unsigned int		partner_type;
+	enum typec_port_type	port_type;
+	enum typec_pwr_opmode	pwr_opmode;
+	bool			vbus_on;
+};
+
+static enum typec_role wusb3801_get_default_role(struct wusb3801 *wusb3801)
+{
+	switch (wusb3801->port_type) {
+	case TYPEC_PORT_SRC:
+		return TYPEC_SOURCE;
+	case TYPEC_PORT_SNK:
+		return TYPEC_SINK;
+	case TYPEC_PORT_DRP:
+	default:
+		if (wusb3801->cap.prefer_role == TYPEC_SOURCE)
+			return TYPEC_SOURCE;
+		return TYPEC_SINK;
+	}
+}
+
+static int wusb3801_map_port_type(enum typec_port_type type)
+{
+	switch (type) {
+	case TYPEC_PORT_SRC:
+		return WUSB3801_CTRL0_ROLE_SRC;
+	case TYPEC_PORT_SNK:
+		return WUSB3801_CTRL0_ROLE_SNK;
+	case TYPEC_PORT_DRP:
+	default:
+		return WUSB3801_CTRL0_ROLE_DRP;
+	}
+}
+
+static int wusb3801_map_pwr_opmode(enum typec_pwr_opmode mode)
+{
+	switch (mode) {
+	case TYPEC_PWR_MODE_USB:
+	default:
+		return WUSB3801_CTRL0_CURRENT_DEFAULT;
+	case TYPEC_PWR_MODE_1_5A:
+		return WUSB3801_CTRL0_CURRENT_1_5A;
+	case TYPEC_PWR_MODE_3_0A:
+		return WUSB3801_CTRL0_CURRENT_3_0A;
+	}
+}
+
+static unsigned int wusb3801_map_try_role(int role)
+{
+	switch (role) {
+	case TYPEC_NO_PREFERRED_ROLE:
+	default:
+		return WUSB3801_CTRL0_TRY_NONE;
+	case TYPEC_SINK:
+		return WUSB3801_CTRL0_TRY_SNK;
+	case TYPEC_SOURCE:
+		return WUSB3801_CTRL0_TRY_SRC;
+	}
+}
+
+static enum typec_orientation wusb3801_unmap_orientation(unsigned int status)
+{
+	switch (status & WUSB3801_STAT_ORIENTATION) {
+	case WUSB3801_STAT_ORIENTATION_NONE:
+	case WUSB3801_STAT_ORIENTATION_BOTH:
+	default:
+		return TYPEC_ORIENTATION_NONE;
+	case WUSB3801_STAT_ORIENTATION_CC1:
+		return TYPEC_ORIENTATION_NORMAL;
+	case WUSB3801_STAT_ORIENTATION_CC2:
+		return TYPEC_ORIENTATION_REVERSE;
+	}
+}
+
+static enum typec_pwr_opmode wusb3801_unmap_pwr_opmode(unsigned int status)
+{
+	switch (status & WUSB3801_STAT_CURRENT) {
+	case WUSB3801_STAT_CURRENT_STANDBY:
+	case WUSB3801_STAT_CURRENT_DEFAULT:
+	default:
+		return TYPEC_PWR_MODE_USB;
+	case WUSB3801_STAT_CURRENT_1_5A:
+		return TYPEC_PWR_MODE_1_5A;
+	case WUSB3801_STAT_CURRENT_3_0A:
+		return TYPEC_PWR_MODE_3_0A;
+	}
+}
+
+static int wusb3801_try_role(struct typec_port *port, int role)
+{
+	struct wusb3801 *wusb3801 = typec_get_drvdata(port);
+
+	return regmap_update_bits(wusb3801->regmap, WUSB3801_REG_CTRL0,
+				  WUSB3801_CTRL0_TRY,
+				  wusb3801_map_try_role(role));
+}
+
+static int wusb3801_port_type_set(struct typec_port *port,
+				  enum typec_port_type type)
+{
+	struct wusb3801 *wusb3801 = typec_get_drvdata(port);
+	int ret;
+
+	ret = regmap_update_bits(wusb3801->regmap, WUSB3801_REG_CTRL0,
+				 WUSB3801_CTRL0_ROLE,
+				 wusb3801_map_port_type(type));
+	if (ret)
+		return ret;
+
+	wusb3801->port_type = type;
+
+	return 0;
+}
+
+static const struct typec_operations wusb3801_typec_ops = {
+	.try_role	= wusb3801_try_role,
+	.port_type_set	= wusb3801_port_type_set,
+};
+
+static int wusb3801_hw_init(struct wusb3801 *wusb3801)
+{
+	return regmap_write(wusb3801->regmap, WUSB3801_REG_CTRL0,
+			    wusb3801_map_try_role(wusb3801->cap.prefer_role) |
+			    wusb3801_map_pwr_opmode(wusb3801->pwr_opmode) |
+			    wusb3801_map_port_type(wusb3801->port_type));
+}
+
+static void wusb3801_hw_update(struct wusb3801 *wusb3801)
+{
+	struct typec_port *port = wusb3801->port;
+	struct device *dev = wusb3801->dev;
+	unsigned int partner_type, status;
+	int ret;
+
+	ret = regmap_read(wusb3801->regmap, WUSB3801_REG_STAT, &status);
+	if (ret) {
+		dev_warn(dev, "Failed to read port status: %d\n", ret);
+		status = 0;
+	}
+	dev_dbg(dev, "status = 0x%02x\n", status);
+
+	partner_type = status & WUSB3801_STAT_PARTNER;
+
+	if (partner_type == WUSB3801_STAT_PARTNER_SNK) {
+		if (!wusb3801->vbus_on) {
+			ret = regulator_enable(wusb3801->vbus_supply);
+			if (ret)
+				dev_warn(dev, "Failed to enable VBUS: %d\n", ret);
+			wusb3801->vbus_on = true;
+		}
+	} else {
+		if (wusb3801->vbus_on) {
+			regulator_disable(wusb3801->vbus_supply);
+			wusb3801->vbus_on = false;
+		}
+	}
+
+	if (partner_type != wusb3801->partner_type) {
+		struct typec_partner_desc desc = {};
+		enum typec_data_role data_role;
+		enum typec_role pwr_role = wusb3801_get_default_role(wusb3801);
+
+		switch (partner_type) {
+		case WUSB3801_STAT_PARTNER_STANDBY:
+			break;
+		case WUSB3801_STAT_PARTNER_SNK:
+			pwr_role = TYPEC_SOURCE;
+			break;
+		case WUSB3801_STAT_PARTNER_SRC:
+			pwr_role = TYPEC_SINK;
+			break;
+		case WUSB3801_STAT_PARTNER_AUDIO:
+			desc.accessory = TYPEC_ACCESSORY_AUDIO;
+			break;
+		case WUSB3801_STAT_PARTNER_DEBUG:
+			desc.accessory = TYPEC_ACCESSORY_DEBUG;
+			break;
+		}
+
+		if (wusb3801->partner) {
+			typec_unregister_partner(wusb3801->partner);
+			wusb3801->partner = NULL;
+		}
+
+		if (partner_type != WUSB3801_STAT_PARTNER_STANDBY) {
+			wusb3801->partner = typec_register_partner(port, &desc);
+			if (IS_ERR(wusb3801->partner))
+				dev_err(dev, "Failed to register partner: %ld\n",
+					PTR_ERR(wusb3801->partner));
+		}
+
+		data_role = pwr_role == TYPEC_SOURCE ? TYPEC_HOST : TYPEC_DEVICE;
+		typec_set_data_role(port, data_role);
+		typec_set_pwr_role(port, pwr_role);
+		typec_set_vconn_role(port, pwr_role);
+	}
+
+	typec_set_pwr_opmode(wusb3801->port,
+			     partner_type == WUSB3801_STAT_PARTNER_SRC
+				? wusb3801_unmap_pwr_opmode(status)
+				: wusb3801->pwr_opmode);
+	typec_set_orientation(wusb3801->port,
+			      wusb3801_unmap_orientation(status));
+
+	wusb3801->partner_type = partner_type;
+}
+
+static irqreturn_t wusb3801_irq(int irq, void *data)
+{
+	struct wusb3801 *wusb3801 = data;
+	unsigned int dummy;
+
+	/*
+	 * The interrupt register must be read in order to clear the IRQ,
+	 * but all of the useful information is in the status register.
+	 */
+	regmap_read(wusb3801->regmap, WUSB3801_REG_INT, &dummy);
+
+	wusb3801_hw_update(wusb3801);
+
+	return IRQ_HANDLED;
+}
+
+static const struct regmap_config config = {
+	.reg_bits	= 8,
+	.val_bits	= 8,
+	.max_register	= WUSB3801_REG_TEST12,
+};
+
+static int wusb3801_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct fwnode_handle *connector;
+	struct wusb3801 *wusb3801;
+	const char *cap_str;
+	int ret;
+
+	wusb3801 = devm_kzalloc(dev, sizeof(*wusb3801), GFP_KERNEL);
+	if (!wusb3801)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, wusb3801);
+
+	wusb3801->dev = dev;
+
+	wusb3801->regmap = devm_regmap_init_i2c(client, &config);
+	if (IS_ERR(wusb3801->regmap))
+		return PTR_ERR(wusb3801->regmap);
+
+	wusb3801->vbus_supply = devm_regulator_get(dev, "vbus");
+	if (IS_ERR(wusb3801->vbus_supply))
+		return PTR_ERR(wusb3801->vbus_supply);
+
+	connector = device_get_named_child_node(dev, "connector");
+	if (!connector)
+		return -ENODEV;
+
+	ret = typec_get_fw_cap(&wusb3801->cap, connector);
+	if (ret)
+		goto err_put_connector;
+	wusb3801->port_type = wusb3801->cap.type;
+
+	ret = fwnode_property_read_string(connector, "typec-power-opmode", &cap_str);
+	if (ret)
+		goto err_put_connector;
+
+	ret = typec_find_pwr_opmode(cap_str);
+	if (ret < 0 || ret == TYPEC_PWR_MODE_PD)
+		goto err_put_connector;
+	wusb3801->pwr_opmode = ret;
+
+	/* Initialize the hardware with the devicetree settings. */
+	ret = wusb3801_hw_init(wusb3801);
+	if (ret)
+		goto err_put_connector;
+
+	wusb3801->cap.revision		= USB_TYPEC_REV_1_2;
+	wusb3801->cap.accessory[0]	= TYPEC_ACCESSORY_AUDIO;
+	wusb3801->cap.accessory[1]	= TYPEC_ACCESSORY_DEBUG;
+	wusb3801->cap.orientation_aware	= true;
+	wusb3801->cap.driver_data	= wusb3801;
+	wusb3801->cap.ops		= &wusb3801_typec_ops;
+
+	wusb3801->port = typec_register_port(dev, &wusb3801->cap);
+	if (IS_ERR(wusb3801->port)) {
+		ret = PTR_ERR(wusb3801->port);
+		goto err_put_connector;
+	}
+
+	/* Initialize the port attributes from the hardware state. */
+	wusb3801_hw_update(wusb3801);
+
+	ret = request_threaded_irq(client->irq, NULL, wusb3801_irq,
+				   IRQF_ONESHOT, dev_name(dev), wusb3801);
+	if (ret)
+		goto err_unregister_port;
+
+	fwnode_handle_put(connector);
+
+	return 0;
+
+err_unregister_port:
+	typec_unregister_port(wusb3801->port);
+err_put_connector:
+	fwnode_handle_put(connector);
+
+	return ret;
+}
+
+static void wusb3801_remove(struct i2c_client *client)
+{
+	struct wusb3801 *wusb3801 = i2c_get_clientdata(client);
+
+	free_irq(client->irq, wusb3801);
+
+	if (wusb3801->partner)
+		typec_unregister_partner(wusb3801->partner);
+	typec_unregister_port(wusb3801->port);
+
+	if (wusb3801->vbus_on)
+		regulator_disable(wusb3801->vbus_supply);
+}
+
+static const struct of_device_id wusb3801_of_match[] = {
+	{ .compatible = "willsemi,wusb3801" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, wusb3801_of_match);
+
+static struct i2c_driver wusb3801_driver = {
+	.probe_new	= wusb3801_probe,
+	.remove		= wusb3801_remove,
+	.driver		= {
+		.name		= "wusb3801",
+		.of_match_table	= wusb3801_of_match,
+	},
+};
+
+module_i2c_driver(wusb3801_driver);
+
+MODULE_AUTHOR("Samuel Holland <samuel@sholland.org>");
+MODULE_DESCRIPTION("Willsemi WUSB3801 Type-C port controller driver");
+MODULE_LICENSE("GPL");