From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/platform/x86/lenovo-yogabook-wmi.c | 408 +++++++++++++++++++++++++++++ 1 file changed, 408 insertions(+) create mode 100644 drivers/platform/x86/lenovo-yogabook-wmi.c (limited to 'drivers/platform/x86/lenovo-yogabook-wmi.c') 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 +#include +#include +#include +#include +#include +#include +#include +#include + +#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 = ¶m; + + 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"); -- cgit v1.2.3