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, 391 insertions, 0 deletions

diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c
new file mode 100644
index 000000000..1f8f44b7b
--- /dev/null
+++ b/drivers/gpu/drm/vc4/vc4_dpi.c
@@ -0,0 +1,391 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2016 Broadcom Limited
+ */
+
+/**
+ * DOC: VC4 DPI module
+ *
+ * The VC4 DPI hardware supports MIPI DPI type 4 and Nokia ViSSI
+ * signals.  On BCM2835, these can be routed out to GPIO0-27 with the
+ * ALT2 function.
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/media-bus-format.h>
+#include <linux/of_graph.h>
+#include <linux/of_platform.h>
+#include "vc4_drv.h"
+#include "vc4_regs.h"
+
+#define DPI_C			0x00
+# define DPI_OUTPUT_ENABLE_MODE		BIT(16)
+
+/* The order field takes the incoming 24 bit RGB from the pixel valve
+ * and shuffles the 3 channels.
+ */
+# define DPI_ORDER_MASK			VC4_MASK(15, 14)
+# define DPI_ORDER_SHIFT		14
+# define DPI_ORDER_RGB			0
+# define DPI_ORDER_BGR			1
+# define DPI_ORDER_GRB			2
+# define DPI_ORDER_BRG			3
+
+/* The format field takes the ORDER-shuffled pixel valve data and
+ * formats it onto the output lines.
+ */
+# define DPI_FORMAT_MASK		VC4_MASK(13, 11)
+# define DPI_FORMAT_SHIFT		11
+/* This define is named in the hardware, but actually just outputs 0. */
+# define DPI_FORMAT_9BIT_666_RGB	0
+/* Outputs 00000000rrrrrggggggbbbbb */
+# define DPI_FORMAT_16BIT_565_RGB_1	1
+/* Outputs 000rrrrr00gggggg000bbbbb */
+# define DPI_FORMAT_16BIT_565_RGB_2	2
+/* Outputs 00rrrrr000gggggg00bbbbb0 */
+# define DPI_FORMAT_16BIT_565_RGB_3	3
+/* Outputs 000000rrrrrrggggggbbbbbb */
+# define DPI_FORMAT_18BIT_666_RGB_1	4
+/* Outputs 00rrrrrr00gggggg00bbbbbb */
+# define DPI_FORMAT_18BIT_666_RGB_2	5
+/* Outputs rrrrrrrrggggggggbbbbbbbb */
+# define DPI_FORMAT_24BIT_888_RGB	6
+
+/* Reverses the polarity of the corresponding signal */
+# define DPI_PIXEL_CLK_INVERT		BIT(10)
+# define DPI_HSYNC_INVERT		BIT(9)
+# define DPI_VSYNC_INVERT		BIT(8)
+# define DPI_OUTPUT_ENABLE_INVERT	BIT(7)
+
+/* Outputs the signal the falling clock edge instead of rising. */
+# define DPI_HSYNC_NEGATE		BIT(6)
+# define DPI_VSYNC_NEGATE		BIT(5)
+# define DPI_OUTPUT_ENABLE_NEGATE	BIT(4)
+
+/* Disables the signal */
+# define DPI_HSYNC_DISABLE		BIT(3)
+# define DPI_VSYNC_DISABLE		BIT(2)
+# define DPI_OUTPUT_ENABLE_DISABLE	BIT(1)
+
+/* Power gate to the device, full reset at 0 -> 1 transition */
+# define DPI_ENABLE			BIT(0)
+
+/* All other registers besides DPI_C return the ID */
+#define DPI_ID			0x04
+# define DPI_ID_VALUE		0x00647069
+
+/* General DPI hardware state. */
+struct vc4_dpi {
+	struct vc4_encoder encoder;
+
+	struct platform_device *pdev;
+
+	void __iomem *regs;
+
+	struct clk *pixel_clock;
+	struct clk *core_clock;
+
+	struct debugfs_regset32 regset;
+};
+
+static inline struct vc4_dpi *
+to_vc4_dpi(struct drm_encoder *encoder)
+{
+	return container_of(encoder, struct vc4_dpi, encoder.base);
+}
+
+#define DPI_READ(offset) readl(dpi->regs + (offset))
+#define DPI_WRITE(offset, val) writel(val, dpi->regs + (offset))
+
+static const struct debugfs_reg32 dpi_regs[] = {
+	VC4_REG32(DPI_C),
+	VC4_REG32(DPI_ID),
+};
+
+static void vc4_dpi_encoder_disable(struct drm_encoder *encoder)
+{
+	struct drm_device *dev = encoder->dev;
+	struct vc4_dpi *dpi = to_vc4_dpi(encoder);
+	int idx;
+
+	if (!drm_dev_enter(dev, &idx))
+		return;
+
+	clk_disable_unprepare(dpi->pixel_clock);
+
+	drm_dev_exit(idx);
+}
+
+static void vc4_dpi_encoder_enable(struct drm_encoder *encoder)
+{
+	struct drm_device *dev = encoder->dev;
+	struct drm_display_mode *mode = &encoder->crtc->mode;
+	struct vc4_dpi *dpi = to_vc4_dpi(encoder);
+	struct drm_connector_list_iter conn_iter;
+	struct drm_connector *connector = NULL, *connector_scan;
+	u32 dpi_c = DPI_ENABLE;
+	int idx;
+	int ret;
+
+	/* Look up the connector attached to DPI so we can get the
+	 * bus_format.  Ideally the bridge would tell us the
+	 * bus_format we want, but it doesn't yet, so assume that it's
+	 * uniform throughout the bridge chain.
+	 */
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector_scan, &conn_iter) {
+		if (connector_scan->encoder == encoder) {
+			connector = connector_scan;
+			break;
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	/* Default to 24bit if no connector or format found. */
+	dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB, DPI_FORMAT);
+
+	if (connector) {
+		if (connector->display_info.num_bus_formats) {
+			u32 bus_format = connector->display_info.bus_formats[0];
+
+			dpi_c &= ~DPI_FORMAT_MASK;
+
+			switch (bus_format) {
+			case MEDIA_BUS_FMT_RGB888_1X24:
+				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB,
+						       DPI_FORMAT);
+				break;
+			case MEDIA_BUS_FMT_BGR888_1X24:
+				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB,
+						       DPI_FORMAT);
+				dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR,
+						       DPI_ORDER);
+				break;
+			case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
+				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2,
+						       DPI_FORMAT);
+				break;
+			case MEDIA_BUS_FMT_RGB666_1X18:
+				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1,
+						       DPI_FORMAT);
+				break;
+			case MEDIA_BUS_FMT_RGB565_1X16:
+				dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3,
+						       DPI_FORMAT);
+				break;
+			default:
+				DRM_ERROR("Unknown media bus format %d\n",
+					  bus_format);
+				break;
+			}
+		}
+
+		if (connector->display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE)
+			dpi_c |= DPI_PIXEL_CLK_INVERT;
+
+		if (connector->display_info.bus_flags & DRM_BUS_FLAG_DE_LOW)
+			dpi_c |= DPI_OUTPUT_ENABLE_INVERT;
+	}
+
+	if (mode->flags & DRM_MODE_FLAG_CSYNC) {
+		if (mode->flags & DRM_MODE_FLAG_NCSYNC)
+			dpi_c |= DPI_OUTPUT_ENABLE_INVERT;
+	} else {
+		dpi_c |= DPI_OUTPUT_ENABLE_MODE;
+
+		if (mode->flags & DRM_MODE_FLAG_NHSYNC)
+			dpi_c |= DPI_HSYNC_INVERT;
+		else if (!(mode->flags & DRM_MODE_FLAG_PHSYNC))
+			dpi_c |= DPI_HSYNC_DISABLE;
+
+		if (mode->flags & DRM_MODE_FLAG_NVSYNC)
+			dpi_c |= DPI_VSYNC_INVERT;
+		else if (!(mode->flags & DRM_MODE_FLAG_PVSYNC))
+			dpi_c |= DPI_VSYNC_DISABLE;
+	}
+
+	if (!drm_dev_enter(dev, &idx))
+		return;
+
+	DPI_WRITE(DPI_C, dpi_c);
+
+	ret = clk_set_rate(dpi->pixel_clock, mode->clock * 1000);
+	if (ret)
+		DRM_ERROR("Failed to set clock rate: %d\n", ret);
+
+	ret = clk_prepare_enable(dpi->pixel_clock);
+	if (ret)
+		DRM_ERROR("Failed to set clock rate: %d\n", ret);
+
+	drm_dev_exit(idx);
+}
+
+static enum drm_mode_status vc4_dpi_encoder_mode_valid(struct drm_encoder *encoder,
+						       const struct drm_display_mode *mode)
+{
+	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+		return MODE_NO_INTERLACE;
+
+	return MODE_OK;
+}
+
+static const struct drm_encoder_helper_funcs vc4_dpi_encoder_helper_funcs = {
+	.disable = vc4_dpi_encoder_disable,
+	.enable = vc4_dpi_encoder_enable,
+	.mode_valid = vc4_dpi_encoder_mode_valid,
+};
+
+static int vc4_dpi_late_register(struct drm_encoder *encoder)
+{
+	struct drm_device *drm = encoder->dev;
+	struct vc4_dpi *dpi = to_vc4_dpi(encoder);
+	int ret;
+
+	ret = vc4_debugfs_add_regset32(drm->primary, "dpi_regs", &dpi->regset);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static const struct drm_encoder_funcs vc4_dpi_encoder_funcs = {
+	.late_register = vc4_dpi_late_register,
+};
+
+static const struct of_device_id vc4_dpi_dt_match[] = {
+	{ .compatible = "brcm,bcm2835-dpi", .data = NULL },
+	{}
+};
+
+/* Sets up the next link in the display chain, whether it's a panel or
+ * a bridge.
+ */
+static int vc4_dpi_init_bridge(struct vc4_dpi *dpi)
+{
+	struct drm_device *drm = dpi->encoder.base.dev;
+	struct device *dev = &dpi->pdev->dev;
+	struct drm_bridge *bridge;
+
+	bridge = drmm_of_get_bridge(drm, dev->of_node, 0, 0);
+	if (IS_ERR(bridge)) {
+		/* If nothing was connected in the DT, that's not an
+		 * error.
+		 */
+		if (PTR_ERR(bridge) == -ENODEV)
+			return 0;
+		else
+			return PTR_ERR(bridge);
+	}
+
+	return drm_bridge_attach(&dpi->encoder.base, bridge, NULL, 0);
+}
+
+static void vc4_dpi_disable_clock(void *ptr)
+{
+	struct vc4_dpi *dpi = ptr;
+
+	clk_disable_unprepare(dpi->core_clock);
+}
+
+static int vc4_dpi_bind(struct device *dev, struct device *master, void *data)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct drm_device *drm = dev_get_drvdata(master);
+	struct vc4_dpi *dpi;
+	int ret;
+
+	dpi = drmm_kzalloc(drm, sizeof(*dpi), GFP_KERNEL);
+	if (!dpi)
+		return -ENOMEM;
+
+	dpi->encoder.type = VC4_ENCODER_TYPE_DPI;
+	dpi->pdev = pdev;
+	dpi->regs = vc4_ioremap_regs(pdev, 0);
+	if (IS_ERR(dpi->regs))
+		return PTR_ERR(dpi->regs);
+	dpi->regset.base = dpi->regs;
+	dpi->regset.regs = dpi_regs;
+	dpi->regset.nregs = ARRAY_SIZE(dpi_regs);
+
+	if (DPI_READ(DPI_ID) != DPI_ID_VALUE) {
+		dev_err(dev, "Port returned 0x%08x for ID instead of 0x%08x\n",
+			DPI_READ(DPI_ID), DPI_ID_VALUE);
+		return -ENODEV;
+	}
+
+	dpi->core_clock = devm_clk_get(dev, "core");
+	if (IS_ERR(dpi->core_clock)) {
+		ret = PTR_ERR(dpi->core_clock);
+		if (ret != -EPROBE_DEFER)
+			DRM_ERROR("Failed to get core clock: %d\n", ret);
+		return ret;
+	}
+
+	dpi->pixel_clock = devm_clk_get(dev, "pixel");
+	if (IS_ERR(dpi->pixel_clock)) {
+		ret = PTR_ERR(dpi->pixel_clock);
+		if (ret != -EPROBE_DEFER)
+			DRM_ERROR("Failed to get pixel clock: %d\n", ret);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(dpi->core_clock);
+	if (ret) {
+		DRM_ERROR("Failed to turn on core clock: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(dev, vc4_dpi_disable_clock, dpi);
+	if (ret)
+		return ret;
+
+	ret = drmm_encoder_init(drm, &dpi->encoder.base,
+				&vc4_dpi_encoder_funcs,
+				DRM_MODE_ENCODER_DPI,
+				NULL);
+	if (ret)
+		return ret;
+
+	drm_encoder_helper_add(&dpi->encoder.base, &vc4_dpi_encoder_helper_funcs);
+
+	ret = vc4_dpi_init_bridge(dpi);
+	if (ret)
+		return ret;
+
+	dev_set_drvdata(dev, dpi);
+
+	return 0;
+}
+
+static const struct component_ops vc4_dpi_ops = {
+	.bind   = vc4_dpi_bind,
+};
+
+static int vc4_dpi_dev_probe(struct platform_device *pdev)
+{
+	return component_add(&pdev->dev, &vc4_dpi_ops);
+}
+
+static int vc4_dpi_dev_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &vc4_dpi_ops);
+	return 0;
+}
+
+struct platform_driver vc4_dpi_driver = {
+	.probe = vc4_dpi_dev_probe,
+	.remove = vc4_dpi_dev_remove,
+	.driver = {
+		.name = "vc4_dpi",
+		.of_match_table = vc4_dpi_dt_match,
+	},
+};