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, 408 insertions, 0 deletions

diff --git a/drivers/platform/x86/lenovo-yogabook-wmi.c b/drivers/platform/x86/lenovo-yogabook-wmi.c
new file mode 100644
index 000000000..5f4bd1eec
--- /dev/null
+++ b/drivers/platform/x86/lenovo-yogabook-wmi.c
@@ -0,0 +1,408 @@
+// SPDX-License-Identifier: GPL-2.0
+/* WMI driver for Lenovo Yoga Book YB1-X90* / -X91* tablets */
+
+#include <linux/acpi.h>
+#include <linux/devm-helpers.h>
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/machine.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/leds.h>
+#include <linux/wmi.h>
+#include <linux/workqueue.h>
+
+#define YB_MBTN_EVENT_GUID	"243FEC1D-1963-41C1-8100-06A9D82A94B4"
+#define YB_MBTN_METHOD_GUID	"742B0CA1-0B20-404B-9CAA-AEFCABF30CE0"
+
+#define YB_PAD_ENABLE	1
+#define YB_PAD_DISABLE	2
+#define YB_LIGHTUP_BTN	3
+
+#define YB_KBD_BL_DEFAULT 128
+
+/* flags */
+enum {
+	YB_KBD_IS_ON,
+	YB_DIGITIZER_IS_ON,
+	YB_DIGITIZER_MODE,
+	YB_TABLET_MODE,
+	YB_SUSPENDED,
+};
+
+struct yogabook_wmi {
+	struct wmi_device *wdev;
+	struct acpi_device *kbd_adev;
+	struct acpi_device *dig_adev;
+	struct device *kbd_dev;
+	struct device *dig_dev;
+	struct gpio_desc *backside_hall_gpio;
+	int backside_hall_irq;
+	struct work_struct work;
+	struct led_classdev kbd_bl_led;
+	unsigned long flags;
+	uint8_t brightness;
+};
+
+static int yogabook_wmi_do_action(struct wmi_device *wdev, int action)
+{
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+	struct acpi_buffer input;
+	acpi_status status;
+	u32 dummy_arg = 0;
+
+	dev_dbg(&wdev->dev, "Do action: %d\n", action);
+
+	input.pointer = &dummy_arg;
+	input.length = sizeof(dummy_arg);
+
+	status = wmi_evaluate_method(YB_MBTN_METHOD_GUID, 0, action, &input,
+				     &output);
+	if (ACPI_FAILURE(status)) {
+		dev_err(&wdev->dev, "Calling WMI method failure: 0x%x\n",
+			status);
+		return status;
+	}
+
+	kfree(output.pointer);
+
+	return 0;
+}
+
+/*
+ * To control keyboard backlight, call the method KBLC() of the TCS1 ACPI
+ * device (Goodix touchpad acts as virtual sensor keyboard).
+ */
+static int yogabook_wmi_set_kbd_backlight(struct wmi_device *wdev,
+					  uint8_t level)
+{
+	struct yogabook_wmi *data = dev_get_drvdata(&wdev->dev);
+	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+	struct acpi_object_list input;
+	union acpi_object param;
+	acpi_status status;
+
+	if (data->kbd_adev->power.state != ACPI_STATE_D0) {
+		dev_warn(&wdev->dev, "keyboard touchscreen not in D0, cannot set brightness\n");
+		return -ENXIO;
+	}
+
+	dev_dbg(&wdev->dev, "Set KBLC level to %u\n", level);
+
+	input.count = 1;
+	input.pointer = &param;
+
+	param.type = ACPI_TYPE_INTEGER;
+	param.integer.value = 255 - level;
+
+	status = acpi_evaluate_object(acpi_device_handle(data->kbd_adev), "KBLC",
+				      &input, &output);
+	if (ACPI_FAILURE(status)) {
+		dev_err(&wdev->dev, "Failed to call KBLC method: 0x%x\n", status);
+		return status;
+	}
+
+	kfree(output.pointer);
+	return 0;
+}
+
+static void yogabook_wmi_work(struct work_struct *work)
+{
+	struct yogabook_wmi *data = container_of(work, struct yogabook_wmi, work);
+	struct device *dev = &data->wdev->dev;
+	bool kbd_on, digitizer_on;
+	int r;
+
+	if (test_bit(YB_SUSPENDED, &data->flags))
+		return;
+
+	if (test_bit(YB_TABLET_MODE, &data->flags)) {
+		kbd_on = false;
+		digitizer_on = false;
+	} else if (test_bit(YB_DIGITIZER_MODE, &data->flags)) {
+		digitizer_on = true;
+		kbd_on = false;
+	} else {
+		kbd_on = true;
+		digitizer_on = false;
+	}
+
+	if (!kbd_on && test_bit(YB_KBD_IS_ON, &data->flags)) {
+		/*
+		 * Must be done before releasing the keyboard touchscreen driver,
+		 * so that the keyboard touchscreen dev is still in D0.
+		 */
+		yogabook_wmi_set_kbd_backlight(data->wdev, 0);
+		device_release_driver(data->kbd_dev);
+		clear_bit(YB_KBD_IS_ON, &data->flags);
+	}
+
+	if (!digitizer_on && test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {
+		yogabook_wmi_do_action(data->wdev, YB_PAD_DISABLE);
+		device_release_driver(data->dig_dev);
+		clear_bit(YB_DIGITIZER_IS_ON, &data->flags);
+	}
+
+	if (kbd_on && !test_bit(YB_KBD_IS_ON, &data->flags)) {
+		r = device_reprobe(data->kbd_dev);
+		if (r)
+			dev_warn(dev, "Reprobe of keyboard touchscreen failed: %d\n", r);
+
+		yogabook_wmi_set_kbd_backlight(data->wdev, data->brightness);
+		set_bit(YB_KBD_IS_ON, &data->flags);
+	}
+
+	if (digitizer_on && !test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {
+		r = device_reprobe(data->dig_dev);
+		if (r)
+			dev_warn(dev, "Reprobe of digitizer failed: %d\n", r);
+
+		yogabook_wmi_do_action(data->wdev, YB_PAD_ENABLE);
+		set_bit(YB_DIGITIZER_IS_ON, &data->flags);
+	}
+}
+
+static void yogabook_wmi_notify(struct wmi_device *wdev, union acpi_object *dummy)
+{
+	struct yogabook_wmi *data = dev_get_drvdata(&wdev->dev);
+
+	if (test_bit(YB_SUSPENDED, &data->flags))
+		return;
+
+	if (test_bit(YB_DIGITIZER_MODE, &data->flags))
+		clear_bit(YB_DIGITIZER_MODE, &data->flags);
+	else
+		set_bit(YB_DIGITIZER_MODE, &data->flags);
+
+	/*
+	 * We are called from the ACPI core and the driver [un]binding which is
+	 * done also needs ACPI functions, use a workqueue to avoid deadlocking.
+	 */
+	schedule_work(&data->work);
+}
+
+static irqreturn_t yogabook_backside_hall_irq(int irq, void *_data)
+{
+	struct yogabook_wmi *data = _data;
+
+	if (gpiod_get_value(data->backside_hall_gpio))
+		set_bit(YB_TABLET_MODE, &data->flags);
+	else
+		clear_bit(YB_TABLET_MODE, &data->flags);
+
+	schedule_work(&data->work);
+
+	return IRQ_HANDLED;
+}
+
+static enum led_brightness kbd_brightness_get(struct led_classdev *cdev)
+{
+	struct yogabook_wmi *data =
+		container_of(cdev, struct yogabook_wmi, kbd_bl_led);
+
+	return data->brightness;
+}
+
+static int kbd_brightness_set(struct led_classdev *cdev,
+			      enum led_brightness value)
+{
+	struct yogabook_wmi *data =
+		container_of(cdev, struct yogabook_wmi, kbd_bl_led);
+	struct wmi_device *wdev = data->wdev;
+
+	if ((value < 0) || (value > 255))
+		return -EINVAL;
+
+	data->brightness = value;
+
+	if (data->kbd_adev->power.state != ACPI_STATE_D0)
+		return 0;
+
+	return yogabook_wmi_set_kbd_backlight(wdev, data->brightness);
+}
+
+static struct gpiod_lookup_table yogabook_wmi_gpios = {
+	.dev_id		= "243FEC1D-1963-41C1-8100-06A9D82A94B4",
+	.table		= {
+		GPIO_LOOKUP("INT33FF:02", 18, "backside_hall_sw", GPIO_ACTIVE_LOW),
+		{}
+	},
+};
+
+static void yogabook_wmi_rm_gpio_lookup(void *unused)
+{
+	gpiod_remove_lookup_table(&yogabook_wmi_gpios);
+}
+
+static int yogabook_wmi_probe(struct wmi_device *wdev, const void *context)
+{
+	struct yogabook_wmi *data;
+	int r;
+
+	data = devm_kzalloc(&wdev->dev, sizeof(struct yogabook_wmi), GFP_KERNEL);
+	if (data == NULL)
+		return -ENOMEM;
+
+	dev_set_drvdata(&wdev->dev, data);
+
+	data->wdev = wdev;
+	data->brightness = YB_KBD_BL_DEFAULT;
+	set_bit(YB_KBD_IS_ON, &data->flags);
+	set_bit(YB_DIGITIZER_IS_ON, &data->flags);
+
+	r = devm_work_autocancel(&wdev->dev, &data->work, yogabook_wmi_work);
+	if (r)
+		return r;
+
+	data->kbd_adev = acpi_dev_get_first_match_dev("GDIX1001", NULL, -1);
+	if (!data->kbd_adev) {
+		dev_err(&wdev->dev, "Cannot find the touchpad device in ACPI tables\n");
+		return -ENODEV;
+	}
+
+	data->dig_adev = acpi_dev_get_first_match_dev("WCOM0019", NULL, -1);
+	if (!data->dig_adev) {
+		dev_err(&wdev->dev, "Cannot find the digitizer device in ACPI tables\n");
+		r = -ENODEV;
+		goto error_put_devs;
+	}
+
+	data->kbd_dev = get_device(acpi_get_first_physical_node(data->kbd_adev));
+	if (!data->kbd_dev || !data->kbd_dev->driver) {
+		r = -EPROBE_DEFER;
+		goto error_put_devs;
+	}
+
+	data->dig_dev = get_device(acpi_get_first_physical_node(data->dig_adev));
+	if (!data->dig_dev || !data->dig_dev->driver) {
+		r = -EPROBE_DEFER;
+		goto error_put_devs;
+	}
+
+	gpiod_add_lookup_table(&yogabook_wmi_gpios);
+
+	r = devm_add_action_or_reset(&wdev->dev, yogabook_wmi_rm_gpio_lookup, NULL);
+	if (r)
+		goto error_put_devs;
+
+	data->backside_hall_gpio =
+		devm_gpiod_get(&wdev->dev, "backside_hall_sw", GPIOD_IN);
+	if (IS_ERR(data->backside_hall_gpio)) {
+		r = PTR_ERR(data->backside_hall_gpio);
+		dev_err_probe(&wdev->dev, r, "Getting backside_hall_sw GPIO\n");
+		goto error_put_devs;
+	}
+
+	r = gpiod_to_irq(data->backside_hall_gpio);
+	if (r < 0) {
+		dev_err_probe(&wdev->dev, r, "Getting backside_hall_sw IRQ\n");
+		goto error_put_devs;
+	}
+	data->backside_hall_irq = r;
+
+	r = devm_request_irq(&wdev->dev, data->backside_hall_irq,
+			     yogabook_backside_hall_irq,
+			     IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+			     "backside_hall_sw", data);
+	if (r) {
+		dev_err_probe(&wdev->dev, r, "Requesting backside_hall_sw IRQ\n");
+		goto error_put_devs;
+	}
+
+	schedule_work(&data->work);
+
+	data->kbd_bl_led.name = "ybwmi::kbd_backlight";
+	data->kbd_bl_led.brightness_set_blocking = kbd_brightness_set;
+	data->kbd_bl_led.brightness_get = kbd_brightness_get;
+	data->kbd_bl_led.max_brightness = 255;
+
+	r = devm_led_classdev_register(&wdev->dev, &data->kbd_bl_led);
+	if (r < 0) {
+		dev_err_probe(&wdev->dev, r, "Registering backlight LED device\n");
+		goto error_put_devs;
+	}
+
+	return 0;
+
+error_put_devs:
+	put_device(data->dig_dev);
+	put_device(data->kbd_dev);
+	acpi_dev_put(data->dig_adev);
+	acpi_dev_put(data->kbd_adev);
+	return r;
+}
+
+static void yogabook_wmi_remove(struct wmi_device *wdev)
+{
+	struct yogabook_wmi *data = dev_get_drvdata(&wdev->dev);
+
+	put_device(data->dig_dev);
+	put_device(data->kbd_dev);
+	acpi_dev_put(data->dig_adev);
+	acpi_dev_put(data->kbd_adev);
+}
+
+static int __maybe_unused yogabook_wmi_suspend(struct device *dev)
+{
+	struct wmi_device *wdev = container_of(dev, struct wmi_device, dev);
+	struct yogabook_wmi *data = dev_get_drvdata(dev);
+
+	set_bit(YB_SUSPENDED, &data->flags);
+
+	flush_work(&data->work);
+
+	/* Turn off the pen button at sleep */
+	if (test_bit(YB_DIGITIZER_IS_ON, &data->flags))
+		yogabook_wmi_do_action(wdev, YB_PAD_DISABLE);
+
+	return 0;
+}
+
+static int __maybe_unused yogabook_wmi_resume(struct device *dev)
+{
+	struct wmi_device *wdev = container_of(dev, struct wmi_device, dev);
+	struct yogabook_wmi *data = dev_get_drvdata(dev);
+
+	if (test_bit(YB_KBD_IS_ON, &data->flags)) {
+		/* Ensure keyboard touchpad is on before we call KBLC() */
+		acpi_device_set_power(data->kbd_adev, ACPI_STATE_D0);
+		yogabook_wmi_set_kbd_backlight(wdev, data->brightness);
+	}
+
+	if (test_bit(YB_DIGITIZER_IS_ON, &data->flags))
+		yogabook_wmi_do_action(wdev, YB_PAD_ENABLE);
+
+	clear_bit(YB_SUSPENDED, &data->flags);
+
+	/* Check for YB_TABLET_MODE changes made during suspend */
+	schedule_work(&data->work);
+
+	return 0;
+}
+
+static const struct wmi_device_id yogabook_wmi_id_table[] = {
+	{
+		.guid_string = YB_MBTN_EVENT_GUID,
+	},
+	{ } /* Terminating entry */
+};
+
+static SIMPLE_DEV_PM_OPS(yogabook_wmi_pm_ops,
+			 yogabook_wmi_suspend, yogabook_wmi_resume);
+
+static struct wmi_driver yogabook_wmi_driver = {
+	.driver = {
+		.name = "yogabook-wmi",
+		.pm = &yogabook_wmi_pm_ops,
+	},
+	.no_notify_data = true,
+	.id_table = yogabook_wmi_id_table,
+	.probe = yogabook_wmi_probe,
+	.remove = yogabook_wmi_remove,
+	.notify = yogabook_wmi_notify,
+};
+module_wmi_driver(yogabook_wmi_driver);
+
+MODULE_DEVICE_TABLE(wmi, yogabook_wmi_id_table);
+MODULE_AUTHOR("Yauhen Kharuzhy");
+MODULE_DESCRIPTION("Lenovo Yoga Book WMI driver");
+MODULE_LICENSE("GPL v2");