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, 438 insertions, 0 deletions

diff --git a/drivers/platform/x86/barco-p50-gpio.c b/drivers/platform/x86/barco-p50-gpio.c
new file mode 100644
index 000000000..8dd672339
--- /dev/null
+++ b/drivers/platform/x86/barco-p50-gpio.c
@@ -0,0 +1,438 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/*
+ * Support for EC-connected GPIOs for identify
+ * LED/button on Barco P50 board
+ *
+ * Copyright (C) 2021 Barco NV
+ * Author: Santosh Kumar Yadav <santoshkumar.yadav@barco.com>
+ */
+
+#define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt
+
+#include <linux/delay.h>
+#include <linux/dmi.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/gpio_keys.h>
+#include <linux/gpio/driver.h>
+#include <linux/gpio/machine.h>
+#include <linux/input.h>
+
+
+#define DRIVER_NAME		"barco-p50-gpio"
+
+/* GPIO lines */
+#define P50_GPIO_LINE_LED	0
+#define P50_GPIO_LINE_BTN	1
+
+/* GPIO IO Ports */
+#define P50_GPIO_IO_PORT_BASE	0x299
+
+#define P50_PORT_DATA		0x00
+#define P50_PORT_CMD		0x01
+
+#define P50_STATUS_OBF		0x01 /* EC output buffer full */
+#define P50_STATUS_IBF		0x02 /* EC input buffer full */
+
+#define P50_CMD_READ		0xa0
+#define P50_CMD_WRITE		0x50
+
+/* EC mailbox registers */
+#define P50_MBOX_REG_CMD	0x00
+#define P50_MBOX_REG_STATUS	0x01
+#define P50_MBOX_REG_PARAM	0x02
+#define P50_MBOX_REG_DATA	0x03
+
+#define P50_MBOX_CMD_READ_GPIO	0x11
+#define P50_MBOX_CMD_WRITE_GPIO	0x12
+#define P50_MBOX_CMD_CLEAR	0xff
+
+#define P50_MBOX_STATUS_SUCCESS	0x01
+
+#define P50_MBOX_PARAM_LED	0x12
+#define P50_MBOX_PARAM_BTN	0x13
+
+
+struct p50_gpio {
+	struct gpio_chip gc;
+	struct mutex lock;
+	unsigned long base;
+	struct platform_device *leds_pdev;
+	struct platform_device *keys_pdev;
+};
+
+static struct platform_device *gpio_pdev;
+
+static int gpio_params[] = {
+	[P50_GPIO_LINE_LED] = P50_MBOX_PARAM_LED,
+	[P50_GPIO_LINE_BTN] = P50_MBOX_PARAM_BTN,
+};
+
+static const char * const gpio_names[] = {
+	[P50_GPIO_LINE_LED] = "identify-led",
+	[P50_GPIO_LINE_BTN] = "identify-button",
+};
+
+
+static struct gpiod_lookup_table p50_gpio_led_table = {
+	.dev_id = "leds-gpio",
+	.table = {
+		GPIO_LOOKUP_IDX(DRIVER_NAME, P50_GPIO_LINE_LED, NULL, 0, GPIO_ACTIVE_HIGH),
+		{}
+	}
+};
+
+/* GPIO LEDs */
+static struct gpio_led leds[] = {
+	{ .name = "identify" }
+};
+
+static struct gpio_led_platform_data leds_pdata = {
+	.num_leds = ARRAY_SIZE(leds),
+	.leds = leds,
+};
+
+/* GPIO keyboard */
+static struct gpio_keys_button buttons[] = {
+	{
+		.code = KEY_VENDOR,
+		.gpio = P50_GPIO_LINE_BTN,
+		.active_low = 1,
+		.type = EV_KEY,
+		.value = 1,
+	},
+};
+
+static struct gpio_keys_platform_data keys_pdata = {
+	.buttons = buttons,
+	.nbuttons = ARRAY_SIZE(buttons),
+	.poll_interval = 100,
+	.rep = 0,
+	.name = "identify",
+};
+
+
+/* low level access routines */
+
+static int p50_wait_ec(struct p50_gpio *p50, int mask, int expected)
+{
+	int i, val;
+
+	for (i = 0; i < 100; i++) {
+		val = inb(p50->base + P50_PORT_CMD) & mask;
+		if (val == expected)
+			return 0;
+		usleep_range(500, 2000);
+	}
+
+	dev_err(p50->gc.parent, "Timed out waiting for EC (0x%x)\n", val);
+	return -ETIMEDOUT;
+}
+
+
+static int p50_read_mbox_reg(struct p50_gpio *p50, int reg)
+{
+	int ret;
+
+	ret = p50_wait_ec(p50, P50_STATUS_IBF, 0);
+	if (ret)
+		return ret;
+
+	/* clear output buffer flag, prevent unfinished commands */
+	inb(p50->base + P50_PORT_DATA);
+
+	/* cmd/address */
+	outb(P50_CMD_READ | reg, p50->base + P50_PORT_CMD);
+
+	ret = p50_wait_ec(p50, P50_STATUS_OBF, P50_STATUS_OBF);
+	if (ret)
+		return ret;
+
+	return inb(p50->base + P50_PORT_DATA);
+}
+
+static int p50_write_mbox_reg(struct p50_gpio *p50, int reg, int val)
+{
+	int ret;
+
+	ret = p50_wait_ec(p50, P50_STATUS_IBF, 0);
+	if (ret)
+		return ret;
+
+	/* cmd/address */
+	outb(P50_CMD_WRITE | reg, p50->base + P50_PORT_CMD);
+
+	ret = p50_wait_ec(p50, P50_STATUS_IBF, 0);
+	if (ret)
+		return ret;
+
+	/* data */
+	outb(val, p50->base + P50_PORT_DATA);
+
+	return 0;
+}
+
+
+/* mbox routines */
+
+static int p50_wait_mbox_idle(struct p50_gpio *p50)
+{
+	int i, val;
+
+	for (i = 0; i < 1000; i++) {
+		val = p50_read_mbox_reg(p50, P50_MBOX_REG_CMD);
+		/* cmd is 0 when idle */
+		if (val <= 0)
+			return val;
+
+		usleep_range(500, 2000);
+	}
+
+	dev_err(p50->gc.parent,	"Timed out waiting for EC mbox idle (CMD: 0x%x)\n", val);
+
+	return -ETIMEDOUT;
+}
+
+static int p50_send_mbox_cmd(struct p50_gpio *p50, int cmd, int param, int data)
+{
+	int ret;
+
+	ret = p50_wait_mbox_idle(p50);
+	if (ret)
+		return ret;
+
+	ret = p50_write_mbox_reg(p50, P50_MBOX_REG_DATA, data);
+	if (ret)
+		return ret;
+
+	ret = p50_write_mbox_reg(p50, P50_MBOX_REG_PARAM, param);
+	if (ret)
+		return ret;
+
+	ret = p50_write_mbox_reg(p50, P50_MBOX_REG_CMD, cmd);
+	if (ret)
+		return ret;
+
+	ret = p50_wait_mbox_idle(p50);
+	if (ret)
+		return ret;
+
+	ret = p50_read_mbox_reg(p50, P50_MBOX_REG_STATUS);
+	if (ret < 0)
+		return ret;
+
+	if (ret == P50_MBOX_STATUS_SUCCESS)
+		return 0;
+
+	dev_err(p50->gc.parent,	"Mbox command failed (CMD=0x%x STAT=0x%x PARAM=0x%x DATA=0x%x)\n",
+		cmd, ret, param, data);
+
+	return -EIO;
+}
+
+
+/* gpio routines */
+
+static int p50_gpio_get_direction(struct gpio_chip *gc, unsigned int offset)
+{
+	switch (offset) {
+	case P50_GPIO_LINE_BTN:
+		return GPIO_LINE_DIRECTION_IN;
+
+	case P50_GPIO_LINE_LED:
+		return GPIO_LINE_DIRECTION_OUT;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int p50_gpio_get(struct gpio_chip *gc, unsigned int offset)
+{
+	struct p50_gpio *p50 = gpiochip_get_data(gc);
+	int ret;
+
+	mutex_lock(&p50->lock);
+
+	ret = p50_send_mbox_cmd(p50, P50_MBOX_CMD_READ_GPIO, gpio_params[offset], 0);
+	if (ret == 0)
+		ret = p50_read_mbox_reg(p50, P50_MBOX_REG_DATA);
+
+	mutex_unlock(&p50->lock);
+
+	return ret;
+}
+
+static void p50_gpio_set(struct gpio_chip *gc, unsigned int offset, int value)
+{
+	struct p50_gpio *p50 = gpiochip_get_data(gc);
+
+	mutex_lock(&p50->lock);
+
+	p50_send_mbox_cmd(p50, P50_MBOX_CMD_WRITE_GPIO, gpio_params[offset], value);
+
+	mutex_unlock(&p50->lock);
+}
+
+static int p50_gpio_probe(struct platform_device *pdev)
+{
+	struct p50_gpio *p50;
+	struct resource *res;
+	int ret;
+
+	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "Cannot get I/O ports\n");
+		return -ENODEV;
+	}
+
+	if (!devm_request_region(&pdev->dev, res->start, resource_size(res), pdev->name)) {
+		dev_err(&pdev->dev, "Unable to reserve I/O region\n");
+		return -EBUSY;
+	}
+
+	p50 = devm_kzalloc(&pdev->dev, sizeof(*p50), GFP_KERNEL);
+	if (!p50)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, p50);
+	mutex_init(&p50->lock);
+	p50->base = res->start;
+	p50->gc.owner = THIS_MODULE;
+	p50->gc.parent = &pdev->dev;
+	p50->gc.label = dev_name(&pdev->dev);
+	p50->gc.ngpio = ARRAY_SIZE(gpio_names);
+	p50->gc.names = gpio_names;
+	p50->gc.can_sleep = true;
+	p50->gc.base = -1;
+	p50->gc.get_direction = p50_gpio_get_direction;
+	p50->gc.get = p50_gpio_get;
+	p50->gc.set = p50_gpio_set;
+
+
+	/* reset mbox */
+	ret = p50_wait_mbox_idle(p50);
+	if (ret)
+		return ret;
+
+	ret = p50_write_mbox_reg(p50, P50_MBOX_REG_CMD, P50_MBOX_CMD_CLEAR);
+	if (ret)
+		return ret;
+
+	ret = p50_wait_mbox_idle(p50);
+	if (ret)
+		return ret;
+
+
+	ret = devm_gpiochip_add_data(&pdev->dev, &p50->gc, p50);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Could not register gpiochip: %d\n", ret);
+		return ret;
+	}
+
+	gpiod_add_lookup_table(&p50_gpio_led_table);
+
+	p50->leds_pdev = platform_device_register_data(&pdev->dev,
+		"leds-gpio", PLATFORM_DEVID_NONE, &leds_pdata, sizeof(leds_pdata));
+
+	if (IS_ERR(p50->leds_pdev)) {
+		ret = PTR_ERR(p50->leds_pdev);
+		dev_err(&pdev->dev, "Could not register leds-gpio: %d\n", ret);
+		goto err_leds;
+	}
+
+	/* gpio-keys-polled uses old-style gpio interface, pass the right identifier */
+	buttons[0].gpio += p50->gc.base;
+
+	p50->keys_pdev =
+		platform_device_register_data(&pdev->dev, "gpio-keys-polled",
+					      PLATFORM_DEVID_NONE,
+					      &keys_pdata, sizeof(keys_pdata));
+
+	if (IS_ERR(p50->keys_pdev)) {
+		ret = PTR_ERR(p50->keys_pdev);
+		dev_err(&pdev->dev, "Could not register gpio-keys-polled: %d\n", ret);
+		goto err_keys;
+	}
+
+	return 0;
+
+err_keys:
+	platform_device_unregister(p50->leds_pdev);
+err_leds:
+	gpiod_remove_lookup_table(&p50_gpio_led_table);
+
+	return ret;
+}
+
+static int p50_gpio_remove(struct platform_device *pdev)
+{
+	struct p50_gpio *p50 = platform_get_drvdata(pdev);
+
+	platform_device_unregister(p50->keys_pdev);
+	platform_device_unregister(p50->leds_pdev);
+
+	gpiod_remove_lookup_table(&p50_gpio_led_table);
+
+	return 0;
+}
+
+static struct platform_driver p50_gpio_driver = {
+	.driver = {
+		.name = DRIVER_NAME,
+	},
+	.probe = p50_gpio_probe,
+	.remove = p50_gpio_remove,
+};
+
+/* Board setup */
+static const struct dmi_system_id dmi_ids[] __initconst = {
+	{
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Barco"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_FAMILY, "P50")
+		},
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(dmi, dmi_ids);
+
+static int __init p50_module_init(void)
+{
+	struct resource res = DEFINE_RES_IO(P50_GPIO_IO_PORT_BASE, P50_PORT_CMD + 1);
+	int ret;
+
+	if (!dmi_first_match(dmi_ids))
+		return -ENODEV;
+
+	ret = platform_driver_register(&p50_gpio_driver);
+	if (ret)
+		return ret;
+
+	gpio_pdev = platform_device_register_simple(DRIVER_NAME, PLATFORM_DEVID_NONE, &res, 1);
+	if (IS_ERR(gpio_pdev)) {
+		pr_err("failed registering %s: %ld\n", DRIVER_NAME, PTR_ERR(gpio_pdev));
+		platform_driver_unregister(&p50_gpio_driver);
+		return PTR_ERR(gpio_pdev);
+	}
+
+	return 0;
+}
+
+static void __exit p50_module_exit(void)
+{
+	platform_device_unregister(gpio_pdev);
+	platform_driver_unregister(&p50_gpio_driver);
+}
+
+module_init(p50_module_init);
+module_exit(p50_module_exit);
+
+MODULE_AUTHOR("Santosh Kumar Yadav, Barco NV <santoshkumar.yadav@barco.com>");
+MODULE_DESCRIPTION("Barco P50 identify GPIOs driver");
+MODULE_LICENSE("GPL");