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Message-Id: <20250831192708.9654-2-W_Armin@gmx.de>
Date: Sun, 31 Aug 2025 21:27:07 +0200
From: Armin Wolf <W_Armin@....de>
To: ilpo.jarvinen@...ux.intel.com,
hdegoede@...hat.com,
chumuzero@...il.com,
corbet@....net,
cs@...edo.de,
wse@...edocomputers.com,
ggo@...edocomputers.com
Cc: linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org,
platform-driver-x86@...r.kernel.org,
rdunlap@...radead.org,
alok.a.tiwari@...cle.com,
linux-leds@...r.kernel.org,
lee@...nel.org,
pobrn@...tonmail.com
Subject: [PATCH v3 1/2] platform/x86: Add Uniwill laptop driver
Add a new driver for Uniwill laptops. The driver uses a ACPI
interface to talk with the embedded controller, but relies on a
ACPI WMI interface for receiving event notifications.
The driver is reverse-engineered based on the following information:
- OEM software from intel
- https://github.com/pobrn/qc71_laptop
- https://gitlab.com/tuxedocomputers/development/packages/tuxedo-drivers
- https://github.com/tuxedocomputers/tuxedo-control-center
The underlying EC supports various features, including hwmon sensors,
battery charge limiting, a RGB lightbar and keyboard-related controls.
Reported-by: cyear <chumuzero@...il.com>
Closes: https://github.com/lm-sensors/lm-sensors/issues/508
Closes: https://github.com/Wer-Wolf/uniwill-laptop/issues/3
Signed-off-by: Armin Wolf <W_Armin@....de>
---
.../ABI/testing/sysfs-driver-uniwill-laptop | 53 +
Documentation/wmi/devices/uniwill-laptop.rst | 198 +++
MAINTAINERS | 10 +
drivers/platform/x86/Kconfig | 2 +
drivers/platform/x86/Makefile | 3 +
drivers/platform/x86/uniwill/Kconfig | 38 +
drivers/platform/x86/uniwill/Makefile | 8 +
drivers/platform/x86/uniwill/uniwill-acpi.c | 1537 +++++++++++++++++
drivers/platform/x86/uniwill/uniwill-wmi.c | 92 +
drivers/platform/x86/uniwill/uniwill-wmi.h | 127 ++
10 files changed, 2068 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-driver-uniwill-laptop
create mode 100644 Documentation/wmi/devices/uniwill-laptop.rst
create mode 100644 drivers/platform/x86/uniwill/Kconfig
create mode 100644 drivers/platform/x86/uniwill/Makefile
create mode 100644 drivers/platform/x86/uniwill/uniwill-acpi.c
create mode 100644 drivers/platform/x86/uniwill/uniwill-wmi.c
create mode 100644 drivers/platform/x86/uniwill/uniwill-wmi.h
diff --git a/Documentation/ABI/testing/sysfs-driver-uniwill-laptop b/Documentation/ABI/testing/sysfs-driver-uniwill-laptop
new file mode 100644
index 000000000000..b8d55da113f8
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-driver-uniwill-laptop
@@ -0,0 +1,53 @@
+What: /sys/bus/platform/devices/INOU0000:XX/fn_lock
+Date: August 2025
+KernelVersion: 6.18
+Contact: Armin Wolf <W_Armin@....de>
+Description:
+ Allows userspace applications to enable/disable the FN lock feature
+ of the integrated keyboard by writing "enable"/"disable" into this file.
+
+ Reading this file returns the current enable status of the FN lock functionality.
+
+What: /sys/bus/platform/devices/INOU0000:XX/super_key_lock
+Date: August 2025
+KernelVersion: 6.18
+Contact: Armin Wolf <W_Armin@....de>
+Description:
+ Allows userspace applications to enable/disable the super key functionality
+ of the integrated keyboard by writing "enable"/"disable" into this file.
+
+ Reading this file returns the current enable status of the super key functionality.
+
+What: /sys/bus/platform/devices/INOU0000:XX/touchpad_toggle
+Date: August 2025
+KernelVersion: 6.18
+Contact: Armin Wolf <W_Armin@....de>
+Description:
+ Allows userspace applications to enable/disable the touchpad toggle functionality
+ of the integrated touchpad by writing "enable"/"disable" into this file.
+
+ Reading this file returns the current enable status of the touchpad toggle
+ functionality.
+
+What: /sys/bus/platform/devices/INOU0000:XX/rainbow_animation
+Date: August 2025
+KernelVersion: 6.18
+Contact: Armin Wolf <W_Armin@....de>
+Description:
+ Forces the integrated lightbar to display a rainbow animation when the machine
+ is not suspended. Writing "enable"/"disable" into this file enables/disables
+ this functionality.
+
+ Reading this file returns the current status of the rainbow animation functionality.
+
+What: /sys/bus/platform/devices/INOU0000:XX/breathing_in_suspend
+Date: August 2025
+KernelVersion: 6.18
+Contact: Armin Wolf <W_Armin@....de>
+Description:
+ Causes the integrated lightbar to display a breathing animation when the machine
+ has been suspended and is running on AC power. Writing "enable"/"disable" into
+ this file enables/disables this functionality.
+
+ Reading this file returns the current status of the breathing animation
+ functionality.
diff --git a/Documentation/wmi/devices/uniwill-laptop.rst b/Documentation/wmi/devices/uniwill-laptop.rst
new file mode 100644
index 000000000000..e246bf293450
--- /dev/null
+++ b/Documentation/wmi/devices/uniwill-laptop.rst
@@ -0,0 +1,198 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+========================================
+Uniwill Notebook driver (uniwill-laptop)
+========================================
+
+Introduction
+============
+
+Many notebooks manufactured by Uniwill (either directly or as ODM) provide a EC interface
+for controlling various platform settings like sensors and fan control. This interface is
+used by the ``uniwill-laptop`` driver to map those features onto standard kernel interfaces.
+
+EC WMI interface description
+============================
+
+The EC WMI interface description can be decoded from the embedded binary MOF (bmof)
+data using the `bmfdec <https://github.com/pali/bmfdec>`_ utility:
+
+::
+
+ [WMI, Dynamic, Provider("WmiProv"), Locale("MS\\0x409"),
+ Description("Class used to operate methods on a ULong"),
+ guid("{ABBC0F6F-8EA1-11d1-00A0-C90629100000}")]
+ class AcpiTest_MULong {
+ [key, read] string InstanceName;
+ [read] boolean Active;
+
+ [WmiMethodId(1), Implemented, read, write, Description("Return the contents of a ULong")]
+ void GetULong([out, Description("Ulong Data")] uint32 Data);
+
+ [WmiMethodId(2), Implemented, read, write, Description("Set the contents of a ULong")]
+ void SetULong([in, Description("Ulong Data")] uint32 Data);
+
+ [WmiMethodId(3), Implemented, read, write,
+ Description("Generate an event containing ULong data")]
+ void FireULong([in, Description("WMI requires a parameter")] uint32 Hack);
+
+ [WmiMethodId(4), Implemented, read, write, Description("Get and Set the contents of a ULong")]
+ void GetSetULong([in, Description("Ulong Data")] uint64 Data,
+ [out, Description("Ulong Data")] uint32 Return);
+
+ [WmiMethodId(5), Implemented, read, write,
+ Description("Get and Set the contents of a ULong for Dollby button")]
+ void GetButton([in, Description("Ulong Data")] uint64 Data,
+ [out, Description("Ulong Data")] uint32 Return);
+ };
+
+Most of the WMI-related code was copied from the Windows driver samples, which unfortunately means
+that the WMI-GUID is not unique. This makes the WMI-GUID unusable for autoloading.
+
+WMI method GetULong()
+---------------------
+
+This WMI method was copied from the Windows driver samples and has no function.
+
+WMI method SetULong()
+---------------------
+
+This WMI method was copied from the Windows driver samples and has no function.
+
+WMI method FireULong()
+----------------------
+
+This WMI method allows to inject a WMI event with a 32-bit payload. Its primary purpose seems
+to be debugging.
+
+WMI method GetSetULong()
+------------------------
+
+This WMI method is used to communicate with the EC. The ``Data`` argument holds the following
+information (starting with the least significant byte):
+
+1. 16-bit address
+2. 16-bit data (set to ``0x0000`` when reading)
+3. 16-bit operation (``0x0100`` for reading and ``0x0000`` for writing)
+4. 16-bit reserved (set to ``0x0000``)
+
+The first 8 bits of the ``Return`` value contain the data returned by the EC when reading.
+The special value ``0xFEFEFEFE`` is used to indicate a communication failure with the EC.
+
+WMI method GetButton()
+----------------------
+
+This WMI method is not implemented on all machines and has an unknown purpose.
+
+Reverse-Engineering the EC WMI interface
+========================================
+
+.. warning:: Randomly poking the EC can potentially cause damage to the machine and other unwanted
+ side effects, please be careful.
+
+The EC behind the ``GetSetULong`` method is used by the OEM software supplied by the manufacturer.
+Reverse-engineering of this software is difficult since it uses an obfuscator, however some parts
+are not obfuscated. In this case `dnSpy <https://github.com/dnSpy/dnSpy>`_ could also be helpful.
+
+The EC can be accessed under Windows using powershell (requires admin privileges):
+
+::
+
+ > $obj = Get-CimInstance -Namespace root/wmi -ClassName AcpiTest_MULong | Select-Object -First 1
+ > Invoke-CimMethod -InputObject $obj -MethodName GetSetULong -Arguments @{Data = <input>}
+
+WMI event interface description
+===============================
+
+The WMI interface description can also be decoded from the embedded binary MOF (bmof)
+data:
+
+::
+
+ [WMI, Dynamic, Provider("WmiProv"), Locale("MS\\0x409"),
+ Description("Class containing event generated ULong data"),
+ guid("{ABBC0F72-8EA1-11d1-00A0-C90629100000}")]
+ class AcpiTest_EventULong : WmiEvent {
+ [key, read] string InstanceName;
+ [read] boolean Active;
+
+ [WmiDataId(1), read, write, Description("ULong Data")] uint32 ULong;
+ };
+
+Most of the WMI-related code was again copied from the Windows driver samples, causing this WMI
+interface to suffer from the same restrictions as the EC WMI interface described above.
+
+WMI event data
+--------------
+
+The WMI event data contains a single 32-bit value which is used to indicate various platform events.
+
+Reverse-Engineering the Uniwill WMI event interface
+===================================================
+
+The driver logs debug messages when receiving a WMI event. Thus enabling debug messages will be
+useful for finding unknown event codes.
+
+EC ACPI interface description
+=============================
+
+The ``INOU0000`` ACPI device is a virtual device used to access various hardware registers
+available on notebooks manufactured by Uniwill. Reading and writing those registers happens
+by calling ACPI control methods. The ``uniwill-laptop`` driver uses this device to communicate
+with the EC because the ACPI control methods are faster than the WMI methods described above.
+
+ACPI control methods used for reading registers take a single ACPI integer containing the address
+of the register to read and return a ACPI integer containing the data inside said register. ACPI
+control methods used for writing registers however take two ACPI integers, with the additional
+ACPI integer containing the data to be written into the register. Such ACPI control methods return
+nothing.
+
+System memory
+-------------
+
+System memory can be accessed with a granularity of either a single byte (``MMRB`` for reading and
+``MMWB`` for writing) or four bytes (``MMRD`` for reading and ``MMWD`` for writing). Those ACPI
+control methods are unused because they provide no benefit when compared to the native memory
+access functions provided by the kernel.
+
+EC RAM
+------
+
+The internal RAM of the EC can be accessed with a granularity of a single byte using the ``ECRR``
+(read) and ``ECRW`` (write) ACPI control methods, with the maximum register address being ``0xFFF``.
+The OEM software waits 6 ms after calling one of those ACPI control methods, likely to avoid
+overwhelming the EC when being connected over LPC.
+
+PCI config space
+----------------
+
+The PCI config space can be accessed with a granularity of four bytes using the ``PCRD`` (read) and
+``PCWD`` (write) ACPI control methods. The exact address format is unknown, and poking random PCI
+devices might confuse the PCI subsystem. Because of this those ACPI control methods are not used.
+
+IO ports
+--------
+
+IO ports can be accessed with a granularity of four bytes using the ``IORD`` (read) and ``IOWD``
+(write) ACPI control methods. Those ACPI control methods are unused because they provide no benefit
+when compared to the native IO port access functions provided by the kernel.
+
+CMOS RAM
+--------
+
+The CMOS RAM can be accessed with a granularity of a single byte using the ``RCMS`` (read) and
+``WCMS`` ACPI control methods. Using those ACPI methods might interfere with the native CMOS RAM
+access functions provided by the kernel due to the usage of indexed IO, so they are unused.
+
+Indexed IO
+----------
+
+Indexed IO with IO ports with a granularity of a single byte can be performed using the ``RIOP``
+(read) and ``WIOP`` (write) ACPI control methods. Those ACPI methods are unused because they
+provide no benifit when compared to the native IO port access functions provided by the kernel.
+
+Special thanks go to github user `pobrn` which developed the
+`qc71_laptop <https://github.com/pobrn/qc71_laptop>`_ driver on which this driver is partly based.
+The same is true for Tuxedo Computers, which developed the
+`tuxedo-drivers <https://gitlab.com/tuxedocomputers/development/packages/tuxedo-drivers>`_ package
+which also served as a foundation for this driver.
diff --git a/MAINTAINERS b/MAINTAINERS
index fe168477caa4..99624393f271 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -25903,6 +25903,16 @@ L: linux-scsi@...r.kernel.org
S: Maintained
F: drivers/ufs/host/ufs-renesas.c
+UNIWILL LAPTOP DRIVER
+M: Armin Wolf <W_Armin@....de>
+L: platform-driver-x86@...r.kernel.org
+S: Maintained
+F: Documentation/ABI/testing/sysfs-driver-uniwill-laptop
+F: Documentation/wmi/devices/uniwill-laptop.rst
+F: drivers/platform/x86/uniwill/uniwill-acpi.c
+F: drivers/platform/x86/uniwill/uniwill-wmi.c
+F: drivers/platform/x86/uniwill/uniwill-wmi.h
+
UNSORTED BLOCK IMAGES (UBI)
M: Richard Weinberger <richard@....at>
R: Zhihao Cheng <chengzhihao1@...wei.com>
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 6d238e120dce..a4c2ea69970d 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -74,6 +74,8 @@ config HUAWEI_WMI
To compile this driver as a module, choose M here: the module
will be called huawei-wmi.
+source "drivers/platform/x86/uniwill/Kconfig"
+
config UV_SYSFS
tristate "Sysfs structure for UV systems"
depends on X86_UV
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index a0c5848513e3..a6271588e05a 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -109,6 +109,9 @@ obj-$(CONFIG_TOSHIBA_WMI) += toshiba-wmi.o
# before toshiba_acpi initializes
obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o
+# Uniwill
+obj-y += uniwill/
+
# Inspur
obj-$(CONFIG_INSPUR_PLATFORM_PROFILE) += inspur_platform_profile.o
diff --git a/drivers/platform/x86/uniwill/Kconfig b/drivers/platform/x86/uniwill/Kconfig
new file mode 100644
index 000000000000..d07cc8440188
--- /dev/null
+++ b/drivers/platform/x86/uniwill/Kconfig
@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Uniwill X86 Platform Specific Drivers
+#
+
+menuconfig X86_PLATFORM_DRIVERS_UNIWILL
+ bool "Uniwill X86 Platform Specific Device Drivers"
+ depends on X86_PLATFORM_DEVICES
+ help
+ Say Y here to see options for device drivers for various
+ Uniwill x86 platforms, including many OEM laptops originally
+ manufactured by Uniwill.
+ This option alone does not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and disabled.
+
+if X86_PLATFORM_DRIVERS_UNIWILL
+
+config UNIWILL_LAPTOP
+ tristate "Uniwill Laptop Extras"
+ default m
+ depends on ACPI
+ depends on ACPI_WMI
+ depends on ACPI_BATTERY
+ depends on HWMON
+ depends on INPUT
+ depends on LEDS_CLASS_MULTICOLOR
+ depends on DMI
+ select REGMAP
+ select INPUT_SPARSEKMAP
+ help
+ This driver adds support for various extra features found on Uniwill laptops,
+ like the lightbar, hwmon sensors and hotkeys. It also supports many OEM laptops
+ originally manufactured by Uniwill.
+
+ If you have such a laptop, say Y or M here.
+
+endif
diff --git a/drivers/platform/x86/uniwill/Makefile b/drivers/platform/x86/uniwill/Makefile
new file mode 100644
index 000000000000..05cd1747a240
--- /dev/null
+++ b/drivers/platform/x86/uniwill/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Makefile for linux/drivers/platform/x86/uniwill
+# Uniwill X86 Platform Specific Drivers
+#
+
+obj-$(CONFIG_UNIWILL_LAPTOP) += uniwill-laptop.o
+uniwill-laptop-y := uniwill-acpi.o uniwill-wmi.o
diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c b/drivers/platform/x86/uniwill/uniwill-acpi.c
new file mode 100644
index 000000000000..3467677cc99f
--- /dev/null
+++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
@@ -0,0 +1,1537 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Linux driver for Uniwill notebooks.
+ *
+ * Special thanks go to Pőcze Barnabás, Christoffer Sandberg and Werner Sembach
+ * for supporting the development of this driver either through prior work or
+ * by answering questions regarding the underlying ACPI and WMI interfaces.
+ *
+ * Copyright (C) 2025 Armin Wolf <W_Armin@....de>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/acpi.h>
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/cleanup.h>
+#include <linux/debugfs.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/device/driver.h>
+#include <linux/dmi.h>
+#include <linux/errno.h>
+#include <linux/fixp-arith.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/kernel.h>
+#include <linux/kstrtox.h>
+#include <linux/leds.h>
+#include <linux/led-class-multicolor.h>
+#include <linux/limits.h>
+#include <linux/list.h>
+#include <linux/minmax.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/notifier.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/printk.h>
+#include <linux/regmap.h>
+#include <linux/string.h>
+#include <linux/string_choices.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+#include <linux/units.h>
+
+#include <acpi/battery.h>
+
+#include "uniwill-wmi.h"
+
+#define EC_ADDR_BAT_POWER_UNIT_1 0x0400
+
+#define EC_ADDR_BAT_POWER_UNIT_2 0x0401
+
+#define EC_ADDR_BAT_DESIGN_CAPACITY_1 0x0402
+
+#define EC_ADDR_BAT_DESIGN_CAPACITY_2 0x0403
+
+#define EC_ADDR_BAT_FULL_CAPACITY_1 0x0404
+
+#define EC_ADDR_BAT_FULL_CAPACITY_2 0x0405
+
+#define EC_ADDR_BAT_DESIGN_VOLTAGE_1 0x0408
+
+#define EC_ADDR_BAT_DESIGN_VOLTAGE_2 0x0409
+
+#define EC_ADDR_BAT_STATUS_1 0x0432
+#define BAT_DISCHARGING BIT(0)
+
+#define EC_ADDR_BAT_STATUS_2 0x0433
+
+#define EC_ADDR_BAT_CURRENT_1 0x0434
+
+#define EC_ADDR_BAT_CURRENT_2 0x0435
+
+#define EC_ADDR_BAT_REMAIN_CAPACITY_1 0x0436
+
+#define EC_ADDR_BAT_REMAIN_CAPACITY_2 0x0437
+
+#define EC_ADDR_BAT_VOLTAGE_1 0x0438
+
+#define EC_ADDR_BAT_VOLTAGE_2 0x0439
+
+#define EC_ADDR_CPU_TEMP 0x043E
+
+#define EC_ADDR_GPU_TEMP 0x044F
+
+#define EC_ADDR_MAIN_FAN_RPM_1 0x0464
+
+#define EC_ADDR_MAIN_FAN_RPM_2 0x0465
+
+#define EC_ADDR_SECOND_FAN_RPM_1 0x046C
+
+#define EC_ADDR_SECOND_FAN_RPM_2 0x046D
+
+#define EC_ADDR_DEVICE_STATUS 0x047B
+#define WIFI_STATUS_ON BIT(7)
+/* BIT(5) is also unset depending on the rfkill state (bluetooth?) */
+
+#define EC_ADDR_BAT_ALERT 0x0494
+
+#define EC_ADDR_BAT_CYCLE_COUNT_1 0x04A6
+
+#define EC_ADDR_BAT_CYCLE_COUNT_2 0x04A7
+
+#define EC_ADDR_PROJECT_ID 0x0740
+
+#define EC_ADDR_AP_OEM 0x0741
+#define ENABLE_MANUAL_CTRL BIT(0)
+#define ITE_KBD_EFFECT_REACTIVE BIT(3)
+#define FAN_ABNORMAL BIT(5)
+
+#define EC_ADDR_SUPPORT_5 0x0742
+#define FAN_TURBO_SUPPORTED BIT(4)
+#define FAN_SUPPORT BIT(5)
+
+#define EC_ADDR_CTGP_DB_CTRL 0x0743
+#define CTGP_DB_GENERAL_ENABLE BIT(0)
+#define CTGP_DB_DB_ENABLE BIT(1)
+#define CTGP_DB_CTGP_ENABLE BIT(2)
+
+#define EC_ADDR_CTGP_OFFSET 0x0744
+
+#define EC_ADDR_TPP_OFFSET 0x0745
+
+#define EC_ADDR_MAX_TGP 0x0746
+
+#define EC_ADDR_LIGHTBAR_AC_CTRL 0x0748
+#define LIGHTBAR_APP_EXISTS BIT(0)
+#define LIGHTBAR_POWER_SAVE BIT(1)
+#define LIGHTBAR_S0_OFF BIT(2)
+#define LIGHTBAR_S3_OFF BIT(3) // Breathing animation when suspended
+#define LIGHTBAR_WELCOME BIT(7) // Rainbow animation
+
+#define EC_ADDR_LIGHTBAR_AC_RED 0x0749
+
+#define EC_ADDR_LIGHTBAR_AC_GREEN 0x074A
+
+#define EC_ADDR_LIGHTBAR_AC_BLUE 0x074B
+
+#define EC_ADDR_BIOS_OEM 0x074E
+#define FN_LOCK_STATUS BIT(4)
+
+#define EC_ADDR_MANUAL_FAN_CTRL 0x0751
+#define FAN_LEVEL_MASK GENMASK(2, 0)
+#define FAN_MODE_TURBO BIT(4)
+#define FAN_MODE_HIGH BIT(5)
+#define FAN_MODE_BOOST BIT(6)
+#define FAN_MODE_USER BIT(7)
+
+#define EC_ADDR_PWM_1 0x075B
+
+#define EC_ADDR_PWM_2 0x075C
+
+/* Unreliable */
+#define EC_ADDR_SUPPORT_1 0x0765
+#define AIRPLANE_MODE BIT(0)
+#define GPS_SWITCH BIT(1)
+#define OVERCLOCK BIT(2)
+#define MACRO_KEY BIT(3)
+#define SHORTCUT_KEY BIT(4)
+#define SUPER_KEY_LOCK BIT(5)
+#define LIGHTBAR BIT(6)
+#define FAN_BOOST BIT(7)
+
+#define EC_ADDR_SUPPORT_2 0x0766
+#define SILENT_MODE BIT(0)
+#define USB_CHARGING BIT(1)
+#define RGB_KEYBOARD BIT(2)
+#define CHINA_MODE BIT(5)
+#define MY_BATTERY BIT(6)
+
+#define EC_ADDR_TRIGGER 0x0767
+#define TRIGGER_SUPER_KEY_LOCK BIT(0)
+#define TRIGGER_LIGHTBAR BIT(1)
+#define TRIGGER_FAN_BOOST BIT(2)
+#define TRIGGER_SILENT_MODE BIT(3)
+#define TRIGGER_USB_CHARGING BIT(4)
+#define RGB_APPLY_COLOR BIT(5)
+#define RGB_LOGO_EFFECT BIT(6)
+#define RGB_RAINBOW_EFFECT BIT(7)
+
+#define EC_ADDR_SWITCH_STATUS 0x0768
+#define SUPER_KEY_LOCK_STATUS BIT(0)
+#define LIGHTBAR_STATUS BIT(1)
+#define FAN_BOOST_STATUS BIT(2)
+#define MACRO_KEY_STATUS BIT(3)
+#define MY_BAT_POWER_BAT_STATUS BIT(4)
+
+#define EC_ADDR_RGB_RED 0x0769
+
+#define EC_ADDR_RGB_GREEN 0x076A
+
+#define EC_ADDR_RGB_BLUE 0x076B
+
+#define EC_ADDR_ROMID_START 0x0770
+#define ROMID_LENGTH 14
+
+#define EC_ADDR_ROMID_EXTRA_1 0x077E
+
+#define EC_ADDR_ROMID_EXTRA_2 0x077F
+
+#define EC_ADDR_BIOS_OEM_2 0x0782
+#define FAN_V2_NEW BIT(0)
+#define FAN_QKEY BIT(1)
+#define FAN_TABLE_OFFICE_MODE BIT(2)
+#define FAN_V3 BIT(3)
+#define DEFAULT_MODE BIT(4)
+
+#define EC_ADDR_PL1_SETTING 0x0783
+
+#define EC_ADDR_PL2_SETTING 0x0784
+
+#define EC_ADDR_PL4_SETTING 0x0785
+
+#define EC_ADDR_FAN_DEFAULT 0x0786
+#define FAN_CURVE_LENGTH 5
+
+#define EC_ADDR_KBD_STATUS 0x078C
+#define KBD_WHITE_ONLY BIT(0) // ~single color
+#define KBD_SINGLE_COLOR_OFF BIT(1)
+#define KBD_TURBO_LEVEL_MASK GENMASK(3, 2)
+#define KBD_APPLY BIT(4)
+#define KBD_BRIGHTNESS GENMASK(7, 5)
+
+#define EC_ADDR_FAN_CTRL 0x078E
+#define FAN3P5 BIT(1)
+#define CHARGING_PROFILE BIT(3)
+#define UNIVERSAL_FAN_CTRL BIT(6)
+
+#define EC_ADDR_BIOS_OEM_3 0x07A3
+#define FAN_REDUCED_DURY_CYCLE BIT(5)
+#define FAN_ALWAYS_ON BIT(6)
+
+#define EC_ADDR_BIOS_BYTE 0x07A4
+#define FN_LOCK_SWITCH BIT(3)
+
+#define EC_ADDR_OEM_3 0x07A5
+#define POWER_LED_MASK GENMASK(1, 0)
+#define POWER_LED_LEFT 0x00
+#define POWER_LED_BOTH 0x01
+#define POWER_LED_NONE 0x02
+#define FAN_QUIET BIT(2)
+#define OVERBOOST BIT(4)
+#define HIGH_POWER BIT(7)
+
+#define EC_ADDR_OEM_4 0x07A6
+#define OVERBOOST_DYN_TEMP_OFF BIT(1)
+#define TOUCHPAD_TOGGLE_OFF BIT(6)
+
+#define EC_ADDR_CHARGE_CTRL 0x07B9
+#define CHARGE_CTRL_MASK GENMASK(6, 0)
+#define CHARGE_CTRL_REACHED BIT(7)
+
+#define EC_ADDR_UNIVERSAL_FAN_CTRL 0x07C5
+#define SPLIT_TABLES BIT(7)
+
+#define EC_ADDR_AP_OEM_6 0x07C6
+#define ENABLE_UNIVERSAL_FAN_CTRL BIT(2)
+#define BATTERY_CHARGE_FULL_OVER_24H BIT(3)
+#define BATTERY_ERM_STATUS_REACHED BIT(4)
+
+#define EC_ADDR_CHARGE_PRIO 0x07CC
+#define CHARGING_PERFORMANCE BIT(7)
+
+/* Same bits as EC_ADDR_LIGHTBAR_AC_CTRL except LIGHTBAR_S3_OFF */
+#define EC_ADDR_LIGHTBAR_BAT_CTRL 0x07E2
+
+#define EC_ADDR_LIGHTBAR_BAT_RED 0x07E3
+
+#define EC_ADDR_LIGHTBAR_BAT_GREEN 0x07E4
+
+#define EC_ADDR_LIGHTBAR_BAT_BLUE 0x07E5
+
+#define EC_ADDR_CPU_TEMP_END_TABLE 0x0F00
+
+#define EC_ADDR_CPU_TEMP_START_TABLE 0x0F10
+
+#define EC_ADDR_CPU_FAN_SPEED_TABLE 0x0F20
+
+#define EC_ADDR_GPU_TEMP_END_TABLE 0x0F30
+
+#define EC_ADDR_GPU_TEMP_START_TABLE 0x0F40
+
+#define EC_ADDR_GPU_FAN_SPEED_TABLE 0x0F50
+
+/*
+ * Those two registers technically allow for manual fan control,
+ * but are unstable on some models and are likely not meant to
+ * be used by applications as they are only accessible when using
+ * the WMI interface.
+ */
+#define EC_ADDR_PWM_1_WRITEABLE 0x1804
+
+#define EC_ADDR_PWM_2_WRITEABLE 0x1809
+
+#define DRIVER_NAME "uniwill"
+
+/*
+ * The OEM software always sleeps up to 6 ms after reading/writing EC
+ * registers, so we emulate this behaviour for maximum compatibility.
+ */
+#define UNIWILL_EC_DELAY_US 6000
+
+#define PWM_MAX 200
+#define FAN_TABLE_LENGTH 16
+
+#define LED_CHANNELS 3
+#define LED_MAX_BRIGHTNESS 200
+
+#define UNIWILL_FEATURE_FN_LOCK BIT(0)
+#define UNIWILL_FEATURE_SUPER_KEY_LOCK BIT(1)
+#define UNIWILL_FEATURE_TOUCHPAD_TOGGLE BIT(2)
+#define UNIWILL_FEATURE_LIGHTBAR BIT(3)
+#define UNIWILL_FEATURE_BATTERY BIT(4)
+#define UNIWILL_FEATURE_HWMON BIT(5)
+
+struct uniwill_data {
+ struct device *dev;
+ acpi_handle handle;
+ struct regmap *regmap;
+ struct acpi_battery_hook hook;
+ unsigned int last_charge_ctrl;
+ struct mutex battery_lock; /* Protects the list of currently registered batteries */
+ unsigned int last_switch_status;
+ struct mutex super_key_lock; /* Protects the toggling of the super key lock state */
+ struct list_head batteries;
+ struct led_classdev_mc led_mc_cdev;
+ struct mc_subled led_mc_subled_info[LED_CHANNELS];
+ struct mutex input_lock; /* Protects input sequence during notify */
+ struct input_dev *input_device;
+ struct notifier_block nb;
+};
+
+struct uniwill_battery_entry {
+ struct list_head head;
+ struct power_supply *battery;
+};
+
+static bool force;
+module_param_unsafe(force, bool, 0);
+MODULE_PARM_DESC(force, "Force loading without checking for supported devices\n");
+
+/* Feature bitmask since the associated registers are not reliable */
+static unsigned int supported_features;
+
+/*
+ * "disable" is placed on index 0 so that the return value of sysfs_match_string()
+ * directly translates into a boolean value.
+ */
+static const char * const uniwill_enable_disable_strings[] = {
+ [0] = "disable",
+ [1] = "enable",
+};
+
+static const char * const uniwill_temp_labels[] = {
+ "CPU",
+ "GPU",
+};
+
+static const char * const uniwill_fan_labels[] = {
+ "Main",
+ "Secondary",
+};
+
+static const struct key_entry uniwill_keymap[] = {
+ /* Reported via keyboard controller */
+ { KE_IGNORE, UNIWILL_OSD_CAPSLOCK, { KEY_CAPSLOCK }},
+ { KE_IGNORE, UNIWILL_OSD_NUMLOCK, { KEY_NUMLOCK }},
+
+ /* Reported when the user locks/unlocks the super key */
+ { KE_IGNORE, UNIWILL_OSD_SUPER_KEY_LOCK_ENABLE, { KEY_UNKNOWN }},
+ { KE_IGNORE, UNIWILL_OSD_SUPER_KEY_LOCK_DISABLE, { KEY_UNKNOWN }},
+
+ /* Reported in manual mode when toggling the airplane mode status */
+ { KE_KEY, UNIWILL_OSD_RFKILL, { KEY_RFKILL }},
+
+ /* Reported when user wants to cycle the platform profile */
+ { KE_IGNORE, UNIWILL_OSD_PERFORMANCE_MODE_TOGGLE, { KEY_UNKNOWN }},
+
+ /* Reported when the user wants to adjust the brightness of the keyboard */
+ { KE_KEY, UNIWILL_OSD_KBDILLUMDOWN, { KEY_KBDILLUMDOWN }},
+ { KE_KEY, UNIWILL_OSD_KBDILLUMUP, { KEY_KBDILLUMUP }},
+
+ /* Reported when the user wants to toggle the microphone mute status */
+ { KE_KEY, UNIWILL_OSD_MIC_MUTE, { KEY_MICMUTE }},
+
+ /* Reported when the user locks/unlocks the Fn key */
+ { KE_IGNORE, UNIWILL_OSD_FN_LOCK, { KEY_FN_ESC }},
+
+ /* Reported when the user wants to toggle the brightness of the keyboard */
+ { KE_KEY, UNIWILL_OSD_KBDILLUMTOGGLE, { KEY_KBDILLUMTOGGLE }},
+
+ /* FIXME: find out the exact meaning of those events */
+ { KE_IGNORE, UNIWILL_OSD_BAT_CHARGE_FULL_24_H, { KEY_UNKNOWN }},
+ { KE_IGNORE, UNIWILL_OSD_BAT_ERM_UPDATE, { KEY_UNKNOWN }},
+
+ /* Reported when the user wants to toggle the benchmark mode status */
+ { KE_IGNORE, UNIWILL_OSD_BENCHMARK_MODE_TOGGLE, { KEY_UNKNOWN }},
+
+ { KE_END }
+};
+
+static int uniwill_ec_reg_write(void *context, unsigned int reg, unsigned int val)
+{
+ union acpi_object params[2] = {
+ {
+ .integer = {
+ .type = ACPI_TYPE_INTEGER,
+ .value = reg,
+ },
+ },
+ {
+ .integer = {
+ .type = ACPI_TYPE_INTEGER,
+ .value = val,
+ },
+ },
+ };
+ struct uniwill_data *data = context;
+ struct acpi_object_list input = {
+ .count = ARRAY_SIZE(params),
+ .pointer = params,
+ };
+ acpi_status status;
+
+ status = acpi_evaluate_object(data->handle, "ECRW", &input, NULL);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ usleep_range(UNIWILL_EC_DELAY_US, UNIWILL_EC_DELAY_US * 2);
+
+ return 0;
+}
+
+static int uniwill_ec_reg_read(void *context, unsigned int reg, unsigned int *val)
+{
+ union acpi_object params[1] = {
+ {
+ .integer = {
+ .type = ACPI_TYPE_INTEGER,
+ .value = reg,
+ },
+ },
+ };
+ struct uniwill_data *data = context;
+ struct acpi_object_list input = {
+ .count = ARRAY_SIZE(params),
+ .pointer = params,
+ };
+ unsigned long long output;
+ acpi_status status;
+
+ status = acpi_evaluate_integer(data->handle, "ECRR", &input, &output);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ if (output > U8_MAX)
+ return -ENXIO;
+
+ usleep_range(UNIWILL_EC_DELAY_US, UNIWILL_EC_DELAY_US * 2);
+
+ *val = output;
+
+ return 0;
+}
+
+static const struct regmap_bus uniwill_ec_bus = {
+ .reg_write = uniwill_ec_reg_write,
+ .reg_read = uniwill_ec_reg_read,
+ .reg_format_endian_default = REGMAP_ENDIAN_LITTLE,
+ .val_format_endian_default = REGMAP_ENDIAN_LITTLE,
+};
+
+static bool uniwill_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case EC_ADDR_AP_OEM:
+ case EC_ADDR_LIGHTBAR_AC_CTRL:
+ case EC_ADDR_LIGHTBAR_AC_RED:
+ case EC_ADDR_LIGHTBAR_AC_GREEN:
+ case EC_ADDR_LIGHTBAR_AC_BLUE:
+ case EC_ADDR_BIOS_OEM:
+ case EC_ADDR_TRIGGER:
+ case EC_ADDR_OEM_4:
+ case EC_ADDR_CHARGE_CTRL:
+ case EC_ADDR_LIGHTBAR_BAT_CTRL:
+ case EC_ADDR_LIGHTBAR_BAT_RED:
+ case EC_ADDR_LIGHTBAR_BAT_GREEN:
+ case EC_ADDR_LIGHTBAR_BAT_BLUE:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool uniwill_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case EC_ADDR_CPU_TEMP:
+ case EC_ADDR_GPU_TEMP:
+ case EC_ADDR_MAIN_FAN_RPM_1:
+ case EC_ADDR_MAIN_FAN_RPM_2:
+ case EC_ADDR_SECOND_FAN_RPM_1:
+ case EC_ADDR_SECOND_FAN_RPM_2:
+ case EC_ADDR_BAT_ALERT:
+ case EC_ADDR_PROJECT_ID:
+ case EC_ADDR_AP_OEM:
+ case EC_ADDR_LIGHTBAR_AC_CTRL:
+ case EC_ADDR_LIGHTBAR_AC_RED:
+ case EC_ADDR_LIGHTBAR_AC_GREEN:
+ case EC_ADDR_LIGHTBAR_AC_BLUE:
+ case EC_ADDR_BIOS_OEM:
+ case EC_ADDR_PWM_1:
+ case EC_ADDR_PWM_2:
+ case EC_ADDR_TRIGGER:
+ case EC_ADDR_SWITCH_STATUS:
+ case EC_ADDR_OEM_4:
+ case EC_ADDR_CHARGE_CTRL:
+ case EC_ADDR_LIGHTBAR_BAT_CTRL:
+ case EC_ADDR_LIGHTBAR_BAT_RED:
+ case EC_ADDR_LIGHTBAR_BAT_GREEN:
+ case EC_ADDR_LIGHTBAR_BAT_BLUE:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool uniwill_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case EC_ADDR_CPU_TEMP:
+ case EC_ADDR_GPU_TEMP:
+ case EC_ADDR_MAIN_FAN_RPM_1:
+ case EC_ADDR_MAIN_FAN_RPM_2:
+ case EC_ADDR_SECOND_FAN_RPM_1:
+ case EC_ADDR_SECOND_FAN_RPM_2:
+ case EC_ADDR_BAT_ALERT:
+ case EC_ADDR_PWM_1:
+ case EC_ADDR_PWM_2:
+ case EC_ADDR_TRIGGER:
+ case EC_ADDR_SWITCH_STATUS:
+ case EC_ADDR_CHARGE_CTRL:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config uniwill_ec_config = {
+ .reg_bits = 16,
+ .val_bits = 8,
+ .writeable_reg = uniwill_writeable_reg,
+ .readable_reg = uniwill_readable_reg,
+ .volatile_reg = uniwill_volatile_reg,
+ .can_sleep = true,
+ .max_register = 0xFFF,
+ .cache_type = REGCACHE_MAPLE,
+ .use_single_read = true,
+ .use_single_write = true,
+};
+
+static ssize_t fn_lock_store(struct device *dev, struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = sysfs_match_string(uniwill_enable_disable_strings, buf);
+ if (ret < 0)
+ return ret;
+
+ if (ret)
+ value = FN_LOCK_STATUS;
+ else
+ value = 0;
+
+ ret = regmap_update_bits(data->regmap, EC_ADDR_BIOS_OEM, FN_LOCK_STATUS, value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t fn_lock_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_BIOS_OEM, &value);
+ if (ret < 0)
+ return ret;
+
+ return sysfs_emit(buf, "%s\n", str_enable_disable(value & FN_LOCK_STATUS));
+}
+
+static DEVICE_ATTR_RW(fn_lock);
+
+static ssize_t super_key_lock_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int state, ret;
+
+ state = sysfs_match_string(uniwill_enable_disable_strings, buf);
+ if (state < 0)
+ return state;
+
+ guard(mutex)(&data->super_key_lock);
+
+ ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * We can only toggle the super key lock, so we return early if the setting
+ * is already in the correct state.
+ */
+ if (state == !(value & SUPER_KEY_LOCK_STATUS))
+ return count;
+
+ ret = regmap_write_bits(data->regmap, EC_ADDR_TRIGGER, TRIGGER_SUPER_KEY_LOCK,
+ TRIGGER_SUPER_KEY_LOCK);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t super_key_lock_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
+ if (ret < 0)
+ return ret;
+
+ return sysfs_emit(buf, "%s\n", str_enable_disable(!(value & SUPER_KEY_LOCK_STATUS)));
+}
+
+static DEVICE_ATTR_RW(super_key_lock);
+
+static ssize_t touchpad_toggle_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = sysfs_match_string(uniwill_enable_disable_strings, buf);
+ if (ret < 0)
+ return ret;
+
+ if (ret)
+ value = 0;
+ else
+ value = TOUCHPAD_TOGGLE_OFF;
+
+ ret = regmap_update_bits(data->regmap, EC_ADDR_OEM_4, TOUCHPAD_TOGGLE_OFF, value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t touchpad_toggle_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_OEM_4, &value);
+ if (ret < 0)
+ return ret;
+
+ return sysfs_emit(buf, "%s\n", str_enable_disable(!(value & TOUCHPAD_TOGGLE_OFF)));
+}
+
+static DEVICE_ATTR_RW(touchpad_toggle);
+
+static ssize_t rainbow_animation_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = sysfs_match_string(uniwill_enable_disable_strings, buf);
+ if (ret < 0)
+ return ret;
+
+ if (ret)
+ value = LIGHTBAR_WELCOME;
+ else
+ value = 0;
+
+ ret = regmap_update_bits(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL, LIGHTBAR_WELCOME, value);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_update_bits(data->regmap, EC_ADDR_LIGHTBAR_BAT_CTRL, LIGHTBAR_WELCOME, value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t rainbow_animation_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL, &value);
+ if (ret < 0)
+ return ret;
+
+ return sysfs_emit(buf, "%s\n", str_enable_disable(value & LIGHTBAR_WELCOME));
+}
+
+static DEVICE_ATTR_RW(rainbow_animation);
+
+static ssize_t breathing_in_suspend_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = sysfs_match_string(uniwill_enable_disable_strings, buf);
+ if (ret < 0)
+ return ret;
+
+ if (ret)
+ value = 0;
+ else
+ value = LIGHTBAR_S3_OFF;
+
+ ret = regmap_update_bits(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL, LIGHTBAR_S3_OFF, value);
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static ssize_t breathing_in_suspend_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL, &value);
+ if (ret < 0)
+ return ret;
+
+ return sysfs_emit(buf, "%s\n", str_enable_disable(!(value & LIGHTBAR_S3_OFF)));
+}
+
+static DEVICE_ATTR_RW(breathing_in_suspend);
+
+static struct attribute *uniwill_attrs[] = {
+ /* Keyboard-related */
+ &dev_attr_fn_lock.attr,
+ &dev_attr_super_key_lock.attr,
+ &dev_attr_touchpad_toggle.attr,
+ /* Lightbar-related */
+ &dev_attr_rainbow_animation.attr,
+ &dev_attr_breathing_in_suspend.attr,
+ NULL
+};
+
+static umode_t uniwill_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n)
+{
+ if (attr == &dev_attr_fn_lock.attr) {
+ if (supported_features & UNIWILL_FEATURE_FN_LOCK)
+ return attr->mode;
+ }
+
+ if (attr == &dev_attr_super_key_lock.attr) {
+ if (supported_features & UNIWILL_FEATURE_SUPER_KEY_LOCK)
+ return attr->mode;
+ }
+
+ if (attr == &dev_attr_touchpad_toggle.attr) {
+ if (supported_features & UNIWILL_FEATURE_TOUCHPAD_TOGGLE)
+ return attr->mode;
+ }
+
+ if (attr == &dev_attr_rainbow_animation.attr ||
+ attr == &dev_attr_breathing_in_suspend.attr) {
+ if (supported_features & UNIWILL_FEATURE_LIGHTBAR)
+ return attr->mode;
+ }
+
+ return 0;
+}
+
+static const struct attribute_group uniwill_group = {
+ .is_visible = uniwill_attr_is_visible,
+ .attrs = uniwill_attrs,
+};
+
+static const struct attribute_group *uniwill_groups[] = {
+ &uniwill_group,
+ NULL
+};
+
+static int uniwill_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel,
+ long *val)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ unsigned int value;
+ __be16 rpm;
+ int ret;
+
+ switch (type) {
+ case hwmon_temp:
+ switch (channel) {
+ case 0:
+ ret = regmap_read(data->regmap, EC_ADDR_CPU_TEMP, &value);
+ break;
+ case 1:
+ ret = regmap_read(data->regmap, EC_ADDR_GPU_TEMP, &value);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ *val = value * MILLIDEGREE_PER_DEGREE;
+ return 0;
+ case hwmon_fan:
+ switch (channel) {
+ case 0:
+ ret = regmap_bulk_read(data->regmap, EC_ADDR_MAIN_FAN_RPM_1, &rpm,
+ sizeof(rpm));
+ break;
+ case 1:
+ ret = regmap_bulk_read(data->regmap, EC_ADDR_SECOND_FAN_RPM_1, &rpm,
+ sizeof(rpm));
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ *val = be16_to_cpu(rpm);
+ return 0;
+ case hwmon_pwm:
+ switch (channel) {
+ case 0:
+ ret = regmap_read(data->regmap, EC_ADDR_PWM_1, &value);
+ break;
+ case 1:
+ ret = regmap_read(data->regmap, EC_ADDR_PWM_2, &value);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ *val = fixp_linear_interpolate(0, 0, PWM_MAX, U8_MAX, value);
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int uniwill_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr,
+ int channel, const char **str)
+{
+ switch (type) {
+ case hwmon_temp:
+ *str = uniwill_temp_labels[channel];
+ return 0;
+ case hwmon_fan:
+ *str = uniwill_fan_labels[channel];
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static const struct hwmon_ops uniwill_ops = {
+ .visible = 0444,
+ .read = uniwill_read,
+ .read_string = uniwill_read_string,
+};
+
+static const struct hwmon_channel_info * const uniwill_info[] = {
+ HWMON_CHANNEL_INFO(chip, HWMON_C_REGISTER_TZ),
+ HWMON_CHANNEL_INFO(temp,
+ HWMON_T_INPUT | HWMON_T_LABEL,
+ HWMON_T_INPUT | HWMON_T_LABEL),
+ HWMON_CHANNEL_INFO(fan,
+ HWMON_F_INPUT | HWMON_F_LABEL,
+ HWMON_F_INPUT | HWMON_F_LABEL),
+ HWMON_CHANNEL_INFO(pwm,
+ HWMON_PWM_INPUT,
+ HWMON_PWM_INPUT),
+ NULL
+};
+
+static const struct hwmon_chip_info uniwill_chip_info = {
+ .ops = &uniwill_ops,
+ .info = uniwill_info,
+};
+
+static int uniwill_hwmon_init(struct uniwill_data *data)
+{
+ struct device *hdev;
+
+ if (!(supported_features & UNIWILL_FEATURE_HWMON))
+ return 0;
+
+ hdev = devm_hwmon_device_register_with_info(data->dev, "uniwill", data,
+ &uniwill_chip_info, NULL);
+
+ return PTR_ERR_OR_ZERO(hdev);
+}
+
+static const unsigned int uniwill_led_channel_to_bat_reg[LED_CHANNELS] = {
+ EC_ADDR_LIGHTBAR_BAT_RED,
+ EC_ADDR_LIGHTBAR_BAT_GREEN,
+ EC_ADDR_LIGHTBAR_BAT_BLUE,
+};
+
+static const unsigned int uniwill_led_channel_to_ac_reg[LED_CHANNELS] = {
+ EC_ADDR_LIGHTBAR_AC_RED,
+ EC_ADDR_LIGHTBAR_AC_GREEN,
+ EC_ADDR_LIGHTBAR_AC_BLUE,
+};
+
+static int uniwill_led_brightness_set(struct led_classdev *led_cdev, enum led_brightness brightness)
+{
+ struct led_classdev_mc *led_mc_cdev = lcdev_to_mccdev(led_cdev);
+ struct uniwill_data *data = container_of(led_mc_cdev, struct uniwill_data, led_mc_cdev);
+ unsigned int value;
+ int ret;
+
+ ret = led_mc_calc_color_components(led_mc_cdev, brightness);
+ if (ret < 0)
+ return ret;
+
+ for (int i = 0; i < LED_CHANNELS; i++) {
+ /* Prevent the brightness values from overflowing */
+ value = min(LED_MAX_BRIGHTNESS, data->led_mc_subled_info[i].brightness);
+ ret = regmap_write(data->regmap, uniwill_led_channel_to_ac_reg[i], value);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_write(data->regmap, uniwill_led_channel_to_bat_reg[i], value);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (brightness)
+ value = 0;
+ else
+ value = LIGHTBAR_S0_OFF;
+
+ ret = regmap_update_bits(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL, LIGHTBAR_S0_OFF, value);
+ if (ret < 0)
+ return ret;
+
+ return regmap_update_bits(data->regmap, EC_ADDR_LIGHTBAR_BAT_CTRL, LIGHTBAR_S0_OFF, value);
+}
+
+#define LIGHTBAR_MASK (LIGHTBAR_APP_EXISTS | LIGHTBAR_S0_OFF | LIGHTBAR_S3_OFF | LIGHTBAR_WELCOME)
+
+static int uniwill_led_init(struct uniwill_data *data)
+{
+ struct led_init_data init_data = {
+ .devicename = DRIVER_NAME,
+ .default_label = "multicolor:" LED_FUNCTION_STATUS,
+ .devname_mandatory = true,
+ };
+ unsigned int color_indices[3] = {
+ LED_COLOR_ID_RED,
+ LED_COLOR_ID_GREEN,
+ LED_COLOR_ID_BLUE,
+ };
+ unsigned int value;
+ int ret;
+
+ if (!(supported_features & UNIWILL_FEATURE_LIGHTBAR))
+ return 0;
+
+ /*
+ * The EC has separate lightbar settings for AC and battery mode,
+ * so we have to ensure that both settings are the same.
+ */
+ ret = regmap_read(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL, &value);
+ if (ret < 0)
+ return ret;
+
+ value |= LIGHTBAR_APP_EXISTS;
+ ret = regmap_write(data->regmap, EC_ADDR_LIGHTBAR_AC_CTRL, value);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * The breathing animation during suspend is not supported when
+ * running on battery power.
+ */
+ value |= LIGHTBAR_S3_OFF;
+ ret = regmap_update_bits(data->regmap, EC_ADDR_LIGHTBAR_BAT_CTRL, LIGHTBAR_MASK, value);
+ if (ret < 0)
+ return ret;
+
+ data->led_mc_cdev.led_cdev.color = LED_COLOR_ID_MULTI;
+ data->led_mc_cdev.led_cdev.max_brightness = LED_MAX_BRIGHTNESS;
+ data->led_mc_cdev.led_cdev.flags = LED_REJECT_NAME_CONFLICT;
+ data->led_mc_cdev.led_cdev.brightness_set_blocking = uniwill_led_brightness_set;
+
+ if (value & LIGHTBAR_S0_OFF)
+ data->led_mc_cdev.led_cdev.brightness = 0;
+ else
+ data->led_mc_cdev.led_cdev.brightness = LED_MAX_BRIGHTNESS;
+
+ for (int i = 0; i < LED_CHANNELS; i++) {
+ data->led_mc_subled_info[i].color_index = color_indices[i];
+
+ ret = regmap_read(data->regmap, uniwill_led_channel_to_ac_reg[i], &value);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Make sure that the initial intensity value is not greater than
+ * the maximum brightness.
+ */
+ value = min(LED_MAX_BRIGHTNESS, value);
+ ret = regmap_write(data->regmap, uniwill_led_channel_to_ac_reg[i], value);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_write(data->regmap, uniwill_led_channel_to_bat_reg[i], value);
+ if (ret < 0)
+ return ret;
+
+ data->led_mc_subled_info[i].intensity = value;
+ data->led_mc_subled_info[i].channel = i;
+ }
+
+ data->led_mc_cdev.subled_info = data->led_mc_subled_info;
+ data->led_mc_cdev.num_colors = LED_CHANNELS;
+
+ return devm_led_classdev_multicolor_register_ext(data->dev, &data->led_mc_cdev,
+ &init_data);
+}
+
+static int uniwill_get_property(struct power_supply *psy, const struct power_supply_ext *ext,
+ void *drvdata, enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct uniwill_data *data = drvdata;
+ union power_supply_propval prop;
+ unsigned int regval;
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = power_supply_get_property_direct(psy, POWER_SUPPLY_PROP_PRESENT, &prop);
+ if (ret < 0)
+ return ret;
+
+ if (!prop.intval) {
+ val->intval = POWER_SUPPLY_HEALTH_NO_BATTERY;
+ return 0;
+ }
+
+ ret = power_supply_get_property_direct(psy, POWER_SUPPLY_PROP_STATUS, &prop);
+ if (ret < 0)
+ return ret;
+
+ if (prop.intval == POWER_SUPPLY_STATUS_UNKNOWN) {
+ val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
+ return 0;
+ }
+
+ ret = regmap_read(data->regmap, EC_ADDR_BAT_ALERT, ®val);
+ if (ret < 0)
+ return ret;
+
+ if (regval) {
+ /* Charging issue */
+ val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ return 0;
+ }
+
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ return 0;
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
+ ret = regmap_read(data->regmap, EC_ADDR_CHARGE_CTRL, ®val);
+ if (ret < 0)
+ return ret;
+
+ val->intval = clamp_val(FIELD_GET(CHARGE_CTRL_MASK, regval), 0, 100);
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int uniwill_set_property(struct power_supply *psy, const struct power_supply_ext *ext,
+ void *drvdata, enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct uniwill_data *data = drvdata;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
+ if (val->intval < 1 || val->intval > 100)
+ return -EINVAL;
+
+ return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL, CHARGE_CTRL_MASK,
+ val->intval);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int uniwill_property_is_writeable(struct power_supply *psy,
+ const struct power_supply_ext *ext, void *drvdata,
+ enum power_supply_property psp)
+{
+ if (psp == POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD)
+ return true;
+
+ return false;
+}
+
+static const enum power_supply_property uniwill_properties[] = {
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
+};
+
+static const struct power_supply_ext uniwill_extension = {
+ .name = DRIVER_NAME,
+ .properties = uniwill_properties,
+ .num_properties = ARRAY_SIZE(uniwill_properties),
+ .get_property = uniwill_get_property,
+ .set_property = uniwill_set_property,
+ .property_is_writeable = uniwill_property_is_writeable,
+};
+
+static int uniwill_add_battery(struct power_supply *battery, struct acpi_battery_hook *hook)
+{
+ struct uniwill_data *data = container_of(hook, struct uniwill_data, hook);
+ struct uniwill_battery_entry *entry;
+ int ret;
+
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ ret = power_supply_register_extension(battery, &uniwill_extension, data->dev, data);
+ if (ret < 0) {
+ kfree(entry);
+ return ret;
+ }
+
+ guard(mutex)(&data->battery_lock);
+
+ entry->battery = battery;
+ list_add(&entry->head, &data->batteries);
+
+ return 0;
+}
+
+static int uniwill_remove_battery(struct power_supply *battery, struct acpi_battery_hook *hook)
+{
+ struct uniwill_data *data = container_of(hook, struct uniwill_data, hook);
+ struct uniwill_battery_entry *entry, *tmp;
+
+ scoped_guard(mutex, &data->battery_lock) {
+ list_for_each_entry_safe(entry, tmp, &data->batteries, head) {
+ if (entry->battery == battery) {
+ list_del(&entry->head);
+ kfree(entry);
+ break;
+ }
+ }
+ }
+
+ power_supply_unregister_extension(battery, &uniwill_extension);
+
+ return 0;
+}
+
+static int uniwill_battery_init(struct uniwill_data *data)
+{
+ int ret;
+
+ if (!(supported_features & UNIWILL_FEATURE_BATTERY))
+ return 0;
+
+ ret = devm_mutex_init(data->dev, &data->battery_lock);
+ if (ret < 0)
+ return ret;
+
+ INIT_LIST_HEAD(&data->batteries);
+ data->hook.name = "Uniwill Battery Extension";
+ data->hook.add_battery = uniwill_add_battery;
+ data->hook.remove_battery = uniwill_remove_battery;
+
+ return devm_battery_hook_register(data->dev, &data->hook);
+}
+
+static int uniwill_notifier_call(struct notifier_block *nb, unsigned long action, void *dummy)
+{
+ struct uniwill_data *data = container_of(nb, struct uniwill_data, nb);
+ struct uniwill_battery_entry *entry;
+
+ switch (action) {
+ case UNIWILL_OSD_BATTERY_ALERT:
+ guard(mutex)(&data->battery_lock);
+ list_for_each_entry(entry, &data->batteries, head) {
+ power_supply_changed(entry->battery);
+ }
+
+ return NOTIFY_OK;
+ default:
+ guard(mutex)(&data->input_lock);
+ sparse_keymap_report_event(data->input_device, action, 1, true);
+
+ return NOTIFY_OK;
+ }
+}
+
+static int uniwill_input_init(struct uniwill_data *data)
+{
+ int ret;
+
+ ret = devm_mutex_init(data->dev, &data->input_lock);
+ if (ret < 0)
+ return ret;
+
+ data->input_device = devm_input_allocate_device(data->dev);
+ if (!data->input_device)
+ return -ENOMEM;
+
+ ret = sparse_keymap_setup(data->input_device, uniwill_keymap, NULL);
+ if (ret < 0)
+ return ret;
+
+ data->input_device->name = "Uniwill WMI hotkeys";
+ data->input_device->phys = "wmi/input0";
+ data->input_device->id.bustype = BUS_HOST;
+ ret = input_register_device(data->input_device);
+ if (ret < 0)
+ return ret;
+
+ data->nb.notifier_call = uniwill_notifier_call;
+
+ return devm_uniwill_wmi_register_notifier(data->dev, &data->nb);
+}
+
+static void uniwill_disable_manual_control(void *context)
+{
+ struct uniwill_data *data = context;
+
+ regmap_clear_bits(data->regmap, EC_ADDR_AP_OEM, ENABLE_MANUAL_CTRL);
+}
+
+static int uniwill_ec_init(struct uniwill_data *data)
+{
+ unsigned int value;
+ int ret;
+
+ ret = regmap_read(data->regmap, EC_ADDR_PROJECT_ID, &value);
+ if (ret < 0)
+ return ret;
+
+ dev_dbg(data->dev, "Project ID: %u\n", value);
+
+ ret = regmap_set_bits(data->regmap, EC_ADDR_AP_OEM, ENABLE_MANUAL_CTRL);
+ if (ret < 0)
+ return ret;
+
+ return devm_add_action_or_reset(data->dev, uniwill_disable_manual_control, data);
+}
+
+static int uniwill_probe(struct platform_device *pdev)
+{
+ struct uniwill_data *data;
+ struct regmap *regmap;
+ acpi_handle handle;
+ int ret;
+
+ handle = ACPI_HANDLE(&pdev->dev);
+ if (!handle)
+ return -ENODEV;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->dev = &pdev->dev;
+ data->handle = handle;
+ platform_set_drvdata(pdev, data);
+
+ regmap = devm_regmap_init(&pdev->dev, &uniwill_ec_bus, data, &uniwill_ec_config);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ data->regmap = regmap;
+ ret = devm_mutex_init(&pdev->dev, &data->super_key_lock);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_ec_init(data);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_battery_init(data);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_led_init(data);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_hwmon_init(data);
+ if (ret < 0)
+ return ret;
+
+ return uniwill_input_init(data);
+}
+
+static void uniwill_shutdown(struct platform_device *pdev)
+{
+ struct uniwill_data *data = platform_get_drvdata(pdev);
+
+ regmap_clear_bits(data->regmap, EC_ADDR_AP_OEM, ENABLE_MANUAL_CTRL);
+}
+
+static int uniwill_suspend_keyboard(struct uniwill_data *data)
+{
+ if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_LOCK))
+ return 0;
+
+ /*
+ * The EC_ADDR_SWITCH_STATUS is marked as volatile, so we have to restore it
+ * ourselves.
+ */
+ return regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &data->last_switch_status);
+}
+
+static int uniwill_suspend_battery(struct uniwill_data *data)
+{
+ if (!(supported_features & UNIWILL_FEATURE_BATTERY))
+ return 0;
+
+ /*
+ * Save the current charge limit in order to restore it during resume.
+ * We cannot use the regmap code for that since this register needs to
+ * be declared as volatile due to CHARGE_CTRL_REACHED.
+ */
+ return regmap_read(data->regmap, EC_ADDR_CHARGE_CTRL, &data->last_charge_ctrl);
+}
+
+static int uniwill_suspend(struct device *dev)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ int ret;
+
+ ret = uniwill_suspend_keyboard(data);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_suspend_battery(data);
+ if (ret < 0)
+ return ret;
+
+ regcache_cache_only(data->regmap, true);
+ regcache_mark_dirty(data->regmap);
+
+ return 0;
+}
+
+static int uniwill_resume_keyboard(struct uniwill_data *data)
+{
+ unsigned int value;
+ int ret;
+
+ if (!(supported_features & UNIWILL_FEATURE_SUPER_KEY_LOCK))
+ return 0;
+
+ ret = regmap_read(data->regmap, EC_ADDR_SWITCH_STATUS, &value);
+ if (ret < 0)
+ return ret;
+
+ if ((data->last_switch_status & SUPER_KEY_LOCK_STATUS) == (value & SUPER_KEY_LOCK_STATUS))
+ return 0;
+
+ return regmap_write_bits(data->regmap, EC_ADDR_TRIGGER, TRIGGER_SUPER_KEY_LOCK,
+ TRIGGER_SUPER_KEY_LOCK);
+}
+
+static int uniwill_resume_battery(struct uniwill_data *data)
+{
+ if (!(supported_features & UNIWILL_FEATURE_BATTERY))
+ return 0;
+
+ return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL, CHARGE_CTRL_MASK,
+ data->last_charge_ctrl);
+}
+
+static int uniwill_resume(struct device *dev)
+{
+ struct uniwill_data *data = dev_get_drvdata(dev);
+ int ret;
+
+ regcache_cache_only(data->regmap, false);
+
+ ret = regcache_sync(data->regmap);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_resume_keyboard(data);
+ if (ret < 0)
+ return ret;
+
+ return uniwill_resume_battery(data);
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(uniwill_pm_ops, uniwill_suspend, uniwill_resume);
+
+/*
+ * We only use the DMI table for auoloading because the ACPI device itself
+ * does not guarantee that the underlying EC implementation is supported.
+ */
+static const struct acpi_device_id uniwill_id_table[] = {
+ { "INOU0000" },
+ { },
+};
+
+static struct platform_driver uniwill_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .dev_groups = uniwill_groups,
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ .acpi_match_table = uniwill_id_table,
+ .pm = pm_sleep_ptr(&uniwill_pm_ops),
+ },
+ .probe = uniwill_probe,
+ .shutdown = uniwill_shutdown,
+};
+
+static const struct dmi_system_id uniwill_dmi_table[] __initconst = {
+ {
+ .ident = "Intel NUC x15",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client Systems"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPAC71H"),
+ },
+ .driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK |
+ UNIWILL_FEATURE_SUPER_KEY_LOCK |
+ UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
+ UNIWILL_FEATURE_BATTERY |
+ UNIWILL_FEATURE_HWMON),
+ },
+ {
+ .ident = "Intel NUC x15",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel(R) Client Systems"),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LAPKC71F"),
+ },
+ .driver_data = (void *)(UNIWILL_FEATURE_FN_LOCK |
+ UNIWILL_FEATURE_SUPER_KEY_LOCK |
+ UNIWILL_FEATURE_TOUCHPAD_TOGGLE |
+ UNIWILL_FEATURE_LIGHTBAR |
+ UNIWILL_FEATURE_BATTERY |
+ UNIWILL_FEATURE_HWMON),
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(dmi, uniwill_dmi_table);
+
+static int __init uniwill_init(void)
+{
+ const struct dmi_system_id *id;
+ int ret;
+
+ id = dmi_first_match(uniwill_dmi_table);
+ if (!id) {
+ if (!force)
+ return -ENODEV;
+
+ /* Assume that the device supports all features */
+ supported_features = UINT_MAX;
+ pr_warn("Loading on a potentially unsupported device\n");
+ } else {
+ supported_features = (uintptr_t)id->driver_data;
+ }
+
+ ret = platform_driver_register(&uniwill_driver);
+ if (ret < 0)
+ return ret;
+
+ ret = uniwill_wmi_register_driver();
+ if (ret < 0) {
+ platform_driver_unregister(&uniwill_driver);
+ return ret;
+ }
+
+ return 0;
+}
+module_init(uniwill_init);
+
+static void __exit uniwill_exit(void)
+{
+ uniwill_wmi_unregister_driver();
+ platform_driver_unregister(&uniwill_driver);
+}
+module_exit(uniwill_exit);
+
+MODULE_AUTHOR("Armin Wolf <W_Armin@....de>");
+MODULE_DESCRIPTION("Uniwill notebook driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/uniwill/uniwill-wmi.c b/drivers/platform/x86/uniwill/uniwill-wmi.c
new file mode 100644
index 000000000000..31d9c39f14ab
--- /dev/null
+++ b/drivers/platform/x86/uniwill/uniwill-wmi.c
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Linux hotkey driver for Uniwill notebooks.
+ *
+ * Special thanks go to Pőcze Barnabás, Christoffer Sandberg and Werner Sembach
+ * for supporting the development of this driver either through prior work or
+ * by answering questions regarding the underlying WMI interface.
+ *
+ * Copyright (C) 2025 Armin Wolf <W_Armin@....de>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/mod_devicetable.h>
+#include <linux/notifier.h>
+#include <linux/printk.h>
+#include <linux/types.h>
+#include <linux/wmi.h>
+
+#include "uniwill-wmi.h"
+
+#define DRIVER_NAME "uniwill-wmi"
+#define UNIWILL_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000"
+
+static BLOCKING_NOTIFIER_HEAD(uniwill_wmi_chain_head);
+
+static void devm_uniwill_wmi_unregister_notifier(void *data)
+{
+ struct notifier_block *nb = data;
+
+ blocking_notifier_chain_unregister(&uniwill_wmi_chain_head, nb);
+}
+
+int devm_uniwill_wmi_register_notifier(struct device *dev, struct notifier_block *nb)
+{
+ int ret;
+
+ ret = blocking_notifier_chain_register(&uniwill_wmi_chain_head, nb);
+ if (ret < 0)
+ return ret;
+
+ return devm_add_action_or_reset(dev, devm_uniwill_wmi_unregister_notifier, nb);
+}
+
+static void uniwill_wmi_notify(struct wmi_device *wdev, union acpi_object *obj)
+{
+ u32 value;
+
+ if (obj->type != ACPI_TYPE_INTEGER)
+ return;
+
+ value = obj->integer.value;
+
+ dev_dbg(&wdev->dev, "Received WMI event %u\n", value);
+
+ blocking_notifier_call_chain(&uniwill_wmi_chain_head, value, NULL);
+}
+
+/*
+ * We cannot fully trust this GUID since Uniwill just copied the WMI GUID
+ * from the Windows driver example, and others probably did the same.
+ *
+ * Because of this we cannot use this WMI GUID for autoloading. Instead the
+ * associated driver will be registered manually after matching a DMI table.
+ */
+static const struct wmi_device_id uniwill_wmi_id_table[] = {
+ { UNIWILL_EVENT_GUID, NULL },
+ { }
+};
+
+static struct wmi_driver uniwill_wmi_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ },
+ .id_table = uniwill_wmi_id_table,
+ .notify = uniwill_wmi_notify,
+ .no_singleton = true,
+};
+
+int __init uniwill_wmi_register_driver(void)
+{
+ return wmi_driver_register(&uniwill_wmi_driver);
+}
+
+void __exit uniwill_wmi_unregister_driver(void)
+{
+ wmi_driver_unregister(&uniwill_wmi_driver);
+}
diff --git a/drivers/platform/x86/uniwill/uniwill-wmi.h b/drivers/platform/x86/uniwill/uniwill-wmi.h
new file mode 100644
index 000000000000..2bf69f2d8038
--- /dev/null
+++ b/drivers/platform/x86/uniwill/uniwill-wmi.h
@@ -0,0 +1,127 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Linux hotkey driver for Uniwill notebooks.
+ *
+ * Copyright (C) 2025 Armin Wolf <W_Armin@....de>
+ */
+
+#ifndef UNIWILL_WMI_H
+#define UNIWILL_WMI_H
+
+#include <linux/init.h>
+
+#define UNIWILL_OSD_CAPSLOCK 0x01
+#define UNIWILL_OSD_NUMLOCK 0x02
+#define UNIWILL_OSD_SCROLLLOCK 0x03
+
+#define UNIWILL_OSD_TOUCHPAD_ON 0x04
+#define UNIWILL_OSD_TOUCHPAD_OFF 0x05
+
+#define UNIWILL_OSD_SILENT_MODE_ON 0x06
+#define UNIWILL_OSD_SILENT_MODE_OFF 0x07
+
+#define UNIWILL_OSD_WLAN_ON 0x08
+#define UNIWILL_OSD_WLAN_OFF 0x09
+
+#define UNIWILL_OSD_WIMAX_ON 0x0A
+#define UNIWILL_OSD_WIMAX_OFF 0x0B
+
+#define UNIWILL_OSD_BLUETOOTH_ON 0x0C
+#define UNIWILL_OSD_BLUETOOTH_OFF 0x0D
+
+#define UNIWILL_OSD_RF_ON 0x0E
+#define UNIWILL_OSD_RF_OFF 0x0F
+
+#define UNIWILL_OSD_3G_ON 0x10
+#define UNIWILL_OSD_3G_OFF 0x11
+
+#define UNIWILL_OSD_WEBCAM_ON 0x12
+#define UNIWILL_OSD_WEBCAM_OFF 0x13
+
+#define UNIWILL_OSD_BRIGHTNESSUP 0x14
+#define UNIWILL_OSD_BRIGHTNESSDOWN 0x15
+
+#define UNIWILL_OSD_RADIOON 0x1A
+#define UNIWILL_OSD_RADIOOFF 0x1B
+
+#define UNIWILL_OSD_POWERSAVE_ON 0x31
+#define UNIWILL_OSD_POWERSAVE_OFF 0x32
+
+#define UNIWILL_OSD_MENU 0x34
+
+#define UNIWILL_OSD_MUTE 0x35
+#define UNIWILL_OSD_VOLUMEDOWN 0x36
+#define UNIWILL_OSD_VOLUMEUP 0x37
+
+#define UNIWILL_OSD_MENU_2 0x38
+
+#define UNIWILL_OSD_LIGHTBAR_ON 0x39
+#define UNIWILL_OSD_LIGHTBAR_OFF 0x3A
+
+#define UNIWILL_OSD_KB_LED_LEVEL0 0x3B
+#define UNIWILL_OSD_KB_LED_LEVEL1 0x3C
+#define UNIWILL_OSD_KB_LED_LEVEL2 0x3D
+#define UNIWILL_OSD_KB_LED_LEVEL3 0x3E
+#define UNIWILL_OSD_KB_LED_LEVEL4 0x3F
+
+#define UNIWILL_OSD_SUPER_KEY_LOCK_ENABLE 0x40
+#define UNIWILL_OSD_SUPER_KEY_LOCK_DISABLE 0x41
+
+#define UNIWILL_OSD_MENU_JP 0x42
+
+#define UNIWILL_OSD_CAMERA_ON 0x90
+#define UNIWILL_OSD_CAMERA_OFF 0x91
+
+#define UNIWILL_OSD_RFKILL 0xA4
+
+#define UNIWILL_OSD_SUPER_KEY_LOCK_CHANGED 0xA5
+
+#define UNIWILL_OSD_LIGHTBAR_STATE_CHANGED 0xA6
+
+#define UNIWILL_OSD_FAN_BOOST_STATE_CHANGED 0xA7
+
+#define UNIWILL_OSD_LCD_SW 0xA9
+
+#define UNIWILL_OSD_FAN_OVERTEMP 0xAA
+
+#define UNIWILL_OSD_DC_ADAPTER_CHANGED 0xAB
+
+#define UNIWILL_OSD_BAT_HP_OFF 0xAC
+
+#define UNIWILL_OSD_FAN_DOWN_TEMP 0xAD
+
+#define UNIWILL_OSD_BATTERY_ALERT 0xAE
+
+#define UNIWILL_OSD_TIMAP_HAIERLB_SW 0xAF
+
+#define UNIWILL_OSD_PERFORMANCE_MODE_TOGGLE 0xB0
+
+#define UNIWILL_OSD_KBDILLUMDOWN 0xB1
+#define UNIWILL_OSD_KBDILLUMUP 0xB2
+
+#define UNIWILL_OSD_BACKLIGHT_LEVEL_CHANGE 0xB3
+#define UNIWILL_OSD_BACKLIGHT_POWER_CHANGE 0xB4
+
+#define UNIWILL_OSD_MIC_MUTE 0xB7
+
+#define UNIWILL_OSD_FN_LOCK 0xB8
+#define UNIWILL_OSD_KBDILLUMTOGGLE 0xB9
+
+#define UNIWILL_OSD_BAT_CHARGE_FULL_24_H 0xBE
+
+#define UNIWILL_OSD_BAT_ERM_UPDATE 0xBF
+
+#define UNIWILL_OSD_BENCHMARK_MODE_TOGGLE 0xC0
+
+#define UNIWILL_OSD_KBD_BACKLIGHT_CHANGED 0xF0
+
+struct device;
+struct notifier_block;
+
+int devm_uniwill_wmi_register_notifier(struct device *dev, struct notifier_block *nb);
+
+int __init uniwill_wmi_register_driver(void);
+
+void __exit uniwill_wmi_unregister_driver(void);
+
+#endif /* UNIWILL_WMI_H */
--
2.39.5
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