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, 416 insertions, 0 deletions

diff --git a/drivers/gpu/drm/bridge/ti-dlpc3433.c b/drivers/gpu/drm/bridge/ti-dlpc3433.c
new file mode 100644
index 000000000..186a9e2ff
--- /dev/null
+++ b/drivers/gpu/drm/bridge/ti-dlpc3433.c
@@ -0,0 +1,416 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021 RenewOutReach
+ * Copyright (C) 2021 Amarula Solutions(India)
+ *
+ * Author:
+ * Jagan Teki <jagan@amarulasolutions.com>
+ * Christopher Vollo <chris@renewoutreach.org>
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_print.h>
+#include <drm/drm_mipi_dsi.h>
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/media-bus-format.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+
+enum cmd_registers {
+	WR_INPUT_SOURCE		= 0x05,	/* Write Input Source Select */
+	WR_EXT_SOURCE_FMT	= 0x07, /* Write External Video Source Format */
+	WR_IMAGE_CROP		= 0x10,	/* Write Image Crop */
+	WR_DISPLAY_SIZE		= 0x12,	/* Write Display Size */
+	WR_IMAGE_FREEZE		= 0x1A,	/* Write Image Freeze */
+	WR_INPUT_IMAGE_SIZE	= 0x2E,	/* Write External Input Image Size */
+	WR_RGB_LED_EN		= 0x52,	/* Write RGB LED Enable */
+	WR_RGB_LED_CURRENT	= 0x54,	/* Write RGB LED Current */
+	WR_RGB_LED_MAX_CURRENT	= 0x5C,	/* Write RGB LED Max Current */
+	WR_DSI_HS_CLK		= 0xBD,	/* Write DSI HS Clock */
+	RD_DEVICE_ID		= 0xD4,	/* Read Controller Device ID */
+	WR_DSI_PORT_EN		= 0xD7,	/* Write DSI Port Enable */
+};
+
+enum input_source {
+	INPUT_EXTERNAL_VIDEO	= 0,
+	INPUT_TEST_PATTERN,
+	INPUT_SPLASH_SCREEN,
+};
+
+#define DEV_ID_MASK		GENMASK(3, 0)
+#define IMAGE_FREESE_EN		BIT(0)
+#define DSI_PORT_EN		0
+#define EXT_SOURCE_FMT_DSI	0
+#define RED_LED_EN		BIT(0)
+#define GREEN_LED_EN		BIT(1)
+#define BLUE_LED_EN		BIT(2)
+#define LED_MASK		GENMASK(2, 0)
+#define MAX_BYTE_SIZE		8
+
+struct dlpc {
+	struct device		*dev;
+	struct drm_bridge	bridge;
+	struct drm_bridge	*next_bridge;
+	struct device_node	*host_node;
+	struct mipi_dsi_device	*dsi;
+	struct drm_display_mode	mode;
+
+	struct gpio_desc	*enable_gpio;
+	struct regulator	*vcc_intf;
+	struct regulator	*vcc_flsh;
+	struct regmap		*regmap;
+	unsigned int		dsi_lanes;
+};
+
+static inline struct dlpc *bridge_to_dlpc(struct drm_bridge *bridge)
+{
+	return container_of(bridge, struct dlpc, bridge);
+}
+
+static bool dlpc_writeable_noinc_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case WR_IMAGE_CROP:
+	case WR_DISPLAY_SIZE:
+	case WR_INPUT_IMAGE_SIZE:
+	case WR_DSI_HS_CLK:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_range dlpc_volatile_ranges[] = {
+	{ .range_min = 0x10, .range_max = 0xBF },
+};
+
+static const struct regmap_access_table dlpc_volatile_table = {
+	.yes_ranges = dlpc_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(dlpc_volatile_ranges),
+};
+
+static struct regmap_config dlpc_regmap_config = {
+	.reg_bits		= 8,
+	.val_bits		= 8,
+	.max_register		= WR_DSI_PORT_EN,
+	.writeable_noinc_reg	= dlpc_writeable_noinc_reg,
+	.volatile_table		= &dlpc_volatile_table,
+	.cache_type		= REGCACHE_RBTREE,
+	.name			= "dlpc3433",
+};
+
+static void dlpc_atomic_enable(struct drm_bridge *bridge,
+			       struct drm_bridge_state *old_bridge_state)
+{
+	struct dlpc *dlpc = bridge_to_dlpc(bridge);
+	struct device *dev = dlpc->dev;
+	struct drm_display_mode *mode = &dlpc->mode;
+	struct regmap *regmap = dlpc->regmap;
+	char buf[MAX_BYTE_SIZE];
+	unsigned int devid;
+
+	regmap_read(regmap, RD_DEVICE_ID, &devid);
+	devid &= DEV_ID_MASK;
+
+	DRM_DEV_DEBUG(dev, "DLPC3433 device id: 0x%02x\n", devid);
+
+	if (devid != 0x01) {
+		DRM_DEV_ERROR(dev, "Unsupported DLPC device id: 0x%02x\n", devid);
+		return;
+	}
+
+	/* disable image freeze */
+	regmap_write(regmap, WR_IMAGE_FREEZE, IMAGE_FREESE_EN);
+
+	/* enable DSI port */
+	regmap_write(regmap, WR_DSI_PORT_EN, DSI_PORT_EN);
+
+	memset(buf, 0, MAX_BYTE_SIZE);
+
+	/* set image crop */
+	buf[4] = mode->hdisplay & 0xff;
+	buf[5] = (mode->hdisplay & 0xff00) >> 8;
+	buf[6] = mode->vdisplay & 0xff;
+	buf[7] = (mode->vdisplay & 0xff00) >> 8;
+	regmap_noinc_write(regmap, WR_IMAGE_CROP, buf, MAX_BYTE_SIZE);
+
+	/* set display size */
+	buf[4] = mode->hdisplay & 0xff;
+	buf[5] = (mode->hdisplay & 0xff00) >> 8;
+	buf[6] = mode->vdisplay & 0xff;
+	buf[7] = (mode->vdisplay & 0xff00) >> 8;
+	regmap_noinc_write(regmap, WR_DISPLAY_SIZE, buf, MAX_BYTE_SIZE);
+
+	/* set input image size */
+	buf[0] = mode->hdisplay & 0xff;
+	buf[1] = (mode->hdisplay & 0xff00) >> 8;
+	buf[2] = mode->vdisplay & 0xff;
+	buf[3] = (mode->vdisplay & 0xff00) >> 8;
+	regmap_noinc_write(regmap, WR_INPUT_IMAGE_SIZE, buf, 4);
+
+	/* set external video port */
+	regmap_write(regmap, WR_INPUT_SOURCE, INPUT_EXTERNAL_VIDEO);
+
+	/* set external video format select as DSI */
+	regmap_write(regmap, WR_EXT_SOURCE_FMT, EXT_SOURCE_FMT_DSI);
+
+	/* disable image freeze */
+	regmap_write(regmap, WR_IMAGE_FREEZE, 0x00);
+
+	/* enable RGB led */
+	regmap_update_bits(regmap, WR_RGB_LED_EN, LED_MASK,
+			   RED_LED_EN | GREEN_LED_EN | BLUE_LED_EN);
+
+	msleep(10);
+}
+
+static void dlpc_atomic_pre_enable(struct drm_bridge *bridge,
+				   struct drm_bridge_state *old_bridge_state)
+{
+	struct dlpc *dlpc = bridge_to_dlpc(bridge);
+	int ret;
+
+	gpiod_set_value(dlpc->enable_gpio, 1);
+
+	msleep(500);
+
+	ret = regulator_enable(dlpc->vcc_intf);
+	if (ret)
+		DRM_DEV_ERROR(dlpc->dev,
+			      "failed to enable VCC_INTF regulator: %d\n", ret);
+
+	ret = regulator_enable(dlpc->vcc_flsh);
+	if (ret)
+		DRM_DEV_ERROR(dlpc->dev,
+			      "failed to enable VCC_FLSH regulator: %d\n", ret);
+
+	msleep(10);
+}
+
+static void dlpc_atomic_post_disable(struct drm_bridge *bridge,
+				     struct drm_bridge_state *old_bridge_state)
+{
+	struct dlpc *dlpc = bridge_to_dlpc(bridge);
+
+	regulator_disable(dlpc->vcc_flsh);
+	regulator_disable(dlpc->vcc_intf);
+
+	msleep(10);
+
+	gpiod_set_value(dlpc->enable_gpio, 0);
+
+	msleep(500);
+}
+
+#define MAX_INPUT_SEL_FORMATS	1
+
+static u32 *
+dlpc_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
+			       struct drm_bridge_state *bridge_state,
+			       struct drm_crtc_state *crtc_state,
+			       struct drm_connector_state *conn_state,
+			       u32 output_fmt,
+			       unsigned int *num_input_fmts)
+{
+	u32 *input_fmts;
+
+	*num_input_fmts = 0;
+
+	input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts),
+			     GFP_KERNEL);
+	if (!input_fmts)
+		return NULL;
+
+	/* This is the DSI-end bus format */
+	input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24;
+	*num_input_fmts = 1;
+
+	return input_fmts;
+}
+
+static void dlpc_mode_set(struct drm_bridge *bridge,
+			  const struct drm_display_mode *mode,
+			  const struct drm_display_mode *adjusted_mode)
+{
+	struct dlpc *dlpc = bridge_to_dlpc(bridge);
+
+	drm_mode_copy(&dlpc->mode, adjusted_mode);
+}
+
+static int dlpc_attach(struct drm_bridge *bridge,
+		       enum drm_bridge_attach_flags flags)
+{
+	struct dlpc *dlpc = bridge_to_dlpc(bridge);
+
+	return drm_bridge_attach(bridge->encoder, dlpc->next_bridge, bridge, flags);
+}
+
+static const struct drm_bridge_funcs dlpc_bridge_funcs = {
+	.atomic_duplicate_state		= drm_atomic_helper_bridge_duplicate_state,
+	.atomic_destroy_state		= drm_atomic_helper_bridge_destroy_state,
+	.atomic_get_input_bus_fmts	= dlpc_atomic_get_input_bus_fmts,
+	.atomic_reset			= drm_atomic_helper_bridge_reset,
+	.atomic_pre_enable		= dlpc_atomic_pre_enable,
+	.atomic_enable			= dlpc_atomic_enable,
+	.atomic_post_disable		= dlpc_atomic_post_disable,
+	.mode_set			= dlpc_mode_set,
+	.attach				= dlpc_attach,
+};
+
+static int dlpc3433_parse_dt(struct dlpc *dlpc)
+{
+	struct device *dev = dlpc->dev;
+	struct device_node *endpoint;
+	int ret;
+
+	dlpc->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
+	if (IS_ERR(dlpc->enable_gpio))
+		return PTR_ERR(dlpc->enable_gpio);
+
+	dlpc->vcc_intf = devm_regulator_get(dlpc->dev, "vcc_intf");
+	if (IS_ERR(dlpc->vcc_intf))
+		return dev_err_probe(dev, PTR_ERR(dlpc->vcc_intf),
+				     "failed to get VCC_INTF supply\n");
+
+	dlpc->vcc_flsh = devm_regulator_get(dlpc->dev, "vcc_flsh");
+	if (IS_ERR(dlpc->vcc_flsh))
+		return dev_err_probe(dev, PTR_ERR(dlpc->vcc_flsh),
+				     "failed to get VCC_FLSH supply\n");
+
+	dlpc->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
+	if (IS_ERR(dlpc->next_bridge))
+		return PTR_ERR(dlpc->next_bridge);
+
+	endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 0, 0);
+	dlpc->dsi_lanes = of_property_count_u32_elems(endpoint, "data-lanes");
+	if (dlpc->dsi_lanes < 0 || dlpc->dsi_lanes > 4) {
+		ret = -EINVAL;
+		goto err_put_endpoint;
+	}
+
+	dlpc->host_node = of_graph_get_remote_port_parent(endpoint);
+	if (!dlpc->host_node) {
+		ret = -ENODEV;
+		goto err_put_host;
+	}
+
+	of_node_put(endpoint);
+
+	return 0;
+
+err_put_host:
+	of_node_put(dlpc->host_node);
+err_put_endpoint:
+	of_node_put(endpoint);
+	return ret;
+}
+
+static int dlpc_host_attach(struct dlpc *dlpc)
+{
+	struct device *dev = dlpc->dev;
+	struct mipi_dsi_host *host;
+	struct mipi_dsi_device_info info = {
+		.type = "dlpc3433",
+		.channel = 0,
+		.node = NULL,
+	};
+
+	host = of_find_mipi_dsi_host_by_node(dlpc->host_node);
+	if (!host) {
+		DRM_DEV_ERROR(dev, "failed to find dsi host\n");
+		return -EPROBE_DEFER;
+	}
+
+	dlpc->dsi = mipi_dsi_device_register_full(host, &info);
+	if (IS_ERR(dlpc->dsi)) {
+		DRM_DEV_ERROR(dev, "failed to create dsi device\n");
+		return PTR_ERR(dlpc->dsi);
+	}
+
+	dlpc->dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST;
+	dlpc->dsi->format = MIPI_DSI_FMT_RGB565;
+	dlpc->dsi->lanes = dlpc->dsi_lanes;
+
+	return devm_mipi_dsi_attach(dev, dlpc->dsi);
+}
+
+static int dlpc3433_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct dlpc *dlpc;
+	int ret;
+
+	dlpc = devm_kzalloc(dev, sizeof(*dlpc), GFP_KERNEL);
+	if (!dlpc)
+		return -ENOMEM;
+
+	dlpc->dev = dev;
+
+	dlpc->regmap = devm_regmap_init_i2c(client, &dlpc_regmap_config);
+	if (IS_ERR(dlpc->regmap))
+		return PTR_ERR(dlpc->regmap);
+
+	ret = dlpc3433_parse_dt(dlpc);
+	if (ret)
+		return ret;
+
+	dev_set_drvdata(dev, dlpc);
+	i2c_set_clientdata(client, dlpc);
+
+	dlpc->bridge.funcs = &dlpc_bridge_funcs;
+	dlpc->bridge.of_node = dev->of_node;
+	drm_bridge_add(&dlpc->bridge);
+
+	ret = dlpc_host_attach(dlpc);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "failed to attach dsi host\n");
+		goto err_remove_bridge;
+	}
+
+	return 0;
+
+err_remove_bridge:
+	drm_bridge_remove(&dlpc->bridge);
+	return ret;
+}
+
+static void dlpc3433_remove(struct i2c_client *client)
+{
+	struct dlpc *dlpc = i2c_get_clientdata(client);
+
+	drm_bridge_remove(&dlpc->bridge);
+	of_node_put(dlpc->host_node);
+}
+
+static const struct i2c_device_id dlpc3433_id[] = {
+	{ "ti,dlpc3433", 0 },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(i2c, dlpc3433_id);
+
+static const struct of_device_id dlpc3433_match_table[] = {
+	{ .compatible = "ti,dlpc3433" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, dlpc3433_match_table);
+
+static struct i2c_driver dlpc3433_driver = {
+	.probe_new = dlpc3433_probe,
+	.remove = dlpc3433_remove,
+	.id_table = dlpc3433_id,
+	.driver = {
+		.name = "ti-dlpc3433",
+		.of_match_table = dlpc3433_match_table,
+	},
+};
+module_i2c_driver(dlpc3433_driver);
+
+MODULE_AUTHOR("Jagan Teki <jagan@amarulasolutions.com>");
+MODULE_AUTHOR("Christopher Vollo <chris@renewoutreach.org>");
+MODULE_DESCRIPTION("TI DLPC3433 MIPI DSI Display Controller Bridge");
+MODULE_LICENSE("GPL");