--- /dev/null
+What: /sys/kernel/debug/msi-wmi-platform-<wmi_device_name>/*
+Date: April 2024
+KernelVersion: 6.10
+Contact: Armin Wolf <W_Armin@gmx.de>
+Description:
+ This file allows to execute the associated WMI method with the same name.
+
+ To start the execution, write a buffer containing the method arguments
+ at file offset 0. Partial writes or writes at a different offset are not
+ supported.
+
+ The buffer returned by the WMI method can then be read from the file.
+
+ See Documentation/wmi/devices/msi-wmi-platform.rst for details.
--- /dev/null
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+===================================================
+MSI WMI Platform Features driver (msi-wmi-platform)
+===================================================
+
+Introduction
+============
+
+Many MSI notebooks support various features like reading fan sensors. This features are controlled
+by the embedded controller, with the ACPI firmware exposing a standard ACPI WMI interface on top
+of the embedded controller interface.
+
+WMI interface description
+=========================
+
+The WMI interface description can be decoded from the embedded binary MOF (bmof)
+data using the `bmfdec <https://github.com/pali/bmfdec>`_ utility:
+
+::
+
+ [WMI, Locale("MS\0x409"),
+ Description("This class contains the definition of the package used in other classes"),
+ guid("{ABBC0F60-8EA1-11d1-00A0-C90629100000}")]
+ class Package {
+ [WmiDataId(1), read, write, Description("16 bytes of data")] uint8 Bytes[16];
+ };
+
+ [WMI, Locale("MS\0x409"),
+ Description("This class contains the definition of the package used in other classes"),
+ guid("{ABBC0F63-8EA1-11d1-00A0-C90629100000}")]
+ class Package_32 {
+ [WmiDataId(1), read, write, Description("32 bytes of data")] uint8 Bytes[32];
+ };
+
+ [WMI, Dynamic, Provider("WmiProv"), Locale("MS\0x409"),
+ Description("Class used to operate methods on a package"),
+ guid("{ABBC0F6E-8EA1-11d1-00A0-C90629100000}")]
+ class MSI_ACPI {
+ [key, read] string InstanceName;
+ [read] boolean Active;
+
+ [WmiMethodId(1), Implemented, read, write, Description("Return the contents of a package")]
+ void GetPackage([out, id(0)] Package Data);
+
+ [WmiMethodId(2), Implemented, read, write, Description("Set the contents of a package")]
+ void SetPackage([in, id(0)] Package Data);
+
+ [WmiMethodId(3), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_EC([out, id(0)] Package_32 Data);
+
+ [WmiMethodId(4), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_EC([in, id(0)] Package_32 Data);
+
+ [WmiMethodId(5), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_BIOS([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(6), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_BIOS([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(7), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_SMBUS([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(8), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_SMBUS([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(9), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_MasterBattery([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(10), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_MasterBattery([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(11), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_SlaveBattery([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(12), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_SlaveBattery([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(13), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_Temperature([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(14), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_Temperature([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(15), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_Thermal([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(16), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_Thermal([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(17), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_Fan([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(18), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_Fan([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(19), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_Device([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(20), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_Device([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(21), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_Power([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(22), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_Power([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(23), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_Debug([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(24), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_Debug([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(25), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_AP([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(26), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_AP([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(27), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_Data([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(28), Implemented, read, write, Description("Set the contents of a package")]
+ void Set_Data([in, out, id(0)] Package_32 Data);
+
+ [WmiMethodId(29), Implemented, read, write, Description("Return the contents of a package")]
+ void Get_WMI([out, id(0)] Package_32 Data);
+ };
+
+Due to a peculiarity in how Windows handles the ``CreateByteField()`` ACPI operator (errors only
+happen when a invalid byte field is ultimately accessed), all methods require a 32 byte input
+buffer, even if the Binay MOF says otherwise.
+
+The input buffer contains a single byte to select the subfeature to be accessed and 31 bytes of
+input data, the meaning of which depends on the subfeature being accessed.
+
+The output buffer contains a singe byte which signals success or failure (``0x00`` on failure)
+and 31 bytes of output data, the meaning if which depends on the subfeature being accessed.
+
+WMI method Get_EC()
+-------------------
+
+Returns embedded controller information, the selected subfeature does not matter. The output
+data contains a flag byte and a 28 byte controller firmware version string.
+
+The first 4 bits of the flag byte contain the minor version of the embedded controller interface,
+with the next 2 bits containing the major version of the embedded controller interface.
+
+The 7th bit signals if the embedded controller page chaged (exact meaning is unknown), and the
+last bit signals if the platform is a Tigerlake platform.
+
+The MSI software seems to only use this interface when the last bit is set.
+
+WMI method Get_Fan()
+--------------------
+
+Fan speed sensors can be accessed by selecting subfeature ``0x00``. The output data contains
+up to four 16-bit fan speed readings in big-endian format. Most machines do not support all
+four fan speed sensors, so the remaining reading are hardcoded to ``0x0000``.
+
+The fan RPM readings can be calculated with the following formula:
+
+ RPM = 480000 / <fan speed reading>
+
+If the fan speed reading is zero, then the fan RPM is zero too.
+
+WMI method Get_WMI()
+--------------------
+
+Returns the version of the ACPI WMI interface, the selected subfeature does not matter.
+The output data contains two bytes, the first one contains the major version and the last one
+contains the minor revision of the ACPI WMI interface.
+
+The MSI software seems to only use this interface when the major version is greater than two.
+
+Reverse-Engineering the MSI WMI Platform interface
+==================================================
+
+.. warning:: Randomly poking the embedded controller interface can potentially cause damage
+ to the machine and other unwanted side effects, please be careful.
+
+The underlying embedded controller interface is used by the ``msi-ec`` driver, and it seems
+that many methods just copy a part of the embedded controller memory into the output buffer.
+
+This means that the remaining WMI methods can be reverse-engineered by looking which part of
+the embedded controller memory is accessed by the ACPI AML code. The driver also supports a
+debugfs interface for directly executing WMI methods. Additionally, any safety checks regarding
+unsupported hardware can be disabled by loading the module with ``force=true``.
+
+More information about the MSI embedded controller interface can be found at the
+`msi-ec project <https://github.com/BeardOverflow/msi-ec>`_.
+
+Special thanks go to github user `glpnk` for showing how to decode the fan speed readings.
S: Orphan
F: drivers/platform/x86/msi-wmi.c
+MSI WMI PLATFORM FEATURES
+M: Armin Wolf <W_Armin@gmx.de>
+L: platform-driver-x86@vger.kernel.org
+S: Maintained
+F: Documentation/ABI/testing/debugfs-msi-wmi-platform
+F: Documentation/wmi/devices/msi-wmi-platform.rst
+F: drivers/platform/x86/msi-wmi-platform.c
+
MSI001 MEDIA DRIVER
L: linux-media@vger.kernel.org
S: Orphan
To compile this driver as a module, choose M here: the module will
be called msi-wmi.
+config MSI_WMI_PLATFORM
+ tristate "MSI WMI Platform features"
+ depends on ACPI_WMI
+ depends on HWMON
+ help
+ Say Y here if you want to have support for WMI-based platform features
+ like fan sensor access on MSI machines.
+
+ To compile this driver as a module, choose M here: the module will
+ be called msi-wmi-platform.
+
config XO15_EBOOK
tristate "OLPC XO-1.5 ebook switch"
depends on OLPC || COMPILE_TEST
obj-$(CONFIG_MSI_EC) += msi-ec.o
obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o
obj-$(CONFIG_MSI_WMI) += msi-wmi.o
+obj-$(CONFIG_MSI_WMI_PLATFORM) += msi-wmi-platform.o
# OLPC
obj-$(CONFIG_XO15_EBOOK) += xo15-ebook.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Linux driver for WMI platform features on MSI notebooks.
+ *
+ * Copyright (C) 2024 Armin Wolf <W_Armin@gmx.de>
+ */
+
+#define pr_format(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/acpi.h>
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/debugfs.h>
+#include <linux/device.h>
+#include <linux/device/driver.h>
+#include <linux/errno.h>
+#include <linux/hwmon.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/printk.h>
+#include <linux/rwsem.h>
+#include <linux/types.h>
+#include <linux/wmi.h>
+
+#include <asm/unaligned.h>
+
+#define DRIVER_NAME "msi-wmi-platform"
+
+#define MSI_PLATFORM_GUID "ABBC0F6E-8EA1-11d1-00A0-C90629100000"
+
+#define MSI_WMI_PLATFORM_INTERFACE_VERSION 2
+
+#define MSI_PLATFORM_WMI_MAJOR_OFFSET 1
+#define MSI_PLATFORM_WMI_MINOR_OFFSET 2
+
+#define MSI_PLATFORM_EC_FLAGS_OFFSET 1
+#define MSI_PLATFORM_EC_MINOR_MASK GENMASK(3, 0)
+#define MSI_PLATFORM_EC_MAJOR_MASK GENMASK(5, 4)
+#define MSI_PLATFORM_EC_CHANGED_PAGE BIT(6)
+#define MSI_PLATFORM_EC_IS_TIGERLAKE BIT(7)
+#define MSI_PLATFORM_EC_VERSION_OFFSET 2
+
+static bool force;
+module_param_unsafe(force, bool, 0);
+MODULE_PARM_DESC(force, "Force loading without checking for supported WMI interface versions");
+
+enum msi_wmi_platform_method {
+ MSI_PLATFORM_GET_PACKAGE = 0x01,
+ MSI_PLATFORM_SET_PACKAGE = 0x02,
+ MSI_PLATFORM_GET_EC = 0x03,
+ MSI_PLATFORM_SET_EC = 0x04,
+ MSI_PLATFORM_GET_BIOS = 0x05,
+ MSI_PLATFORM_SET_BIOS = 0x06,
+ MSI_PLATFORM_GET_SMBUS = 0x07,
+ MSI_PLATFORM_SET_SMBUS = 0x08,
+ MSI_PLATFORM_GET_MASTER_BATTERY = 0x09,
+ MSI_PLATFORM_SET_MASTER_BATTERY = 0x0a,
+ MSI_PLATFORM_GET_SLAVE_BATTERY = 0x0b,
+ MSI_PLATFORM_SET_SLAVE_BATTERY = 0x0c,
+ MSI_PLATFORM_GET_TEMPERATURE = 0x0d,
+ MSI_PLATFORM_SET_TEMPERATURE = 0x0e,
+ MSI_PLATFORM_GET_THERMAL = 0x0f,
+ MSI_PLATFORM_SET_THERMAL = 0x10,
+ MSI_PLATFORM_GET_FAN = 0x11,
+ MSI_PLATFORM_SET_FAN = 0x12,
+ MSI_PLATFORM_GET_DEVICE = 0x13,
+ MSI_PLATFORM_SET_DEVICE = 0x14,
+ MSI_PLATFORM_GET_POWER = 0x15,
+ MSI_PLATFORM_SET_POWER = 0x16,
+ MSI_PLATFORM_GET_DEBUG = 0x17,
+ MSI_PLATFORM_SET_DEBUG = 0x18,
+ MSI_PLATFORM_GET_AP = 0x19,
+ MSI_PLATFORM_SET_AP = 0x1a,
+ MSI_PLATFORM_GET_DATA = 0x1b,
+ MSI_PLATFORM_SET_DATA = 0x1c,
+ MSI_PLATFORM_GET_WMI = 0x1d,
+};
+
+struct msi_wmi_platform_debugfs_data {
+ struct wmi_device *wdev;
+ enum msi_wmi_platform_method method;
+ struct rw_semaphore buffer_lock; /* Protects debugfs buffer */
+ size_t length;
+ u8 buffer[32];
+};
+
+static const char * const msi_wmi_platform_debugfs_names[] = {
+ "get_package",
+ "set_package",
+ "get_ec",
+ "set_ec",
+ "get_bios",
+ "set_bios",
+ "get_smbus",
+ "set_smbus",
+ "get_master_battery",
+ "set_master_battery",
+ "get_slave_battery",
+ "set_slave_battery",
+ "get_temperature",
+ "set_temperature",
+ "get_thermal",
+ "set_thermal",
+ "get_fan",
+ "set_fan",
+ "get_device",
+ "set_device",
+ "get_power",
+ "set_power",
+ "get_debug",
+ "set_debug",
+ "get_ap",
+ "set_ap",
+ "get_data",
+ "set_data",
+ "get_wmi"
+};
+
+static int msi_wmi_platform_parse_buffer(union acpi_object *obj, u8 *output, size_t length)
+{
+ if (obj->type != ACPI_TYPE_BUFFER)
+ return -ENOMSG;
+
+ if (obj->buffer.length != length)
+ return -EPROTO;
+
+ if (!obj->buffer.pointer[0])
+ return -EIO;
+
+ memcpy(output, obj->buffer.pointer, obj->buffer.length);
+
+ return 0;
+}
+
+static int msi_wmi_platform_query(struct wmi_device *wdev, enum msi_wmi_platform_method method,
+ u8 *input, size_t input_length, u8 *output, size_t output_length)
+{
+ struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_buffer in = {
+ .length = input_length,
+ .pointer = input
+ };
+ union acpi_object *obj;
+ acpi_status status;
+ int ret;
+
+ if (!input_length || !output_length)
+ return -EINVAL;
+
+ status = wmidev_evaluate_method(wdev, 0x0, method, &in, &out);
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ obj = out.pointer;
+ if (!obj)
+ return -ENODATA;
+
+ ret = msi_wmi_platform_parse_buffer(obj, output, output_length);
+ kfree(obj);
+
+ return ret;
+}
+
+static umode_t msi_wmi_platform_is_visible(const void *drvdata, enum hwmon_sensor_types type,
+ u32 attr, int channel)
+{
+ return 0444;
+}
+
+static int msi_wmi_platform_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
+ int channel, long *val)
+{
+ struct wmi_device *wdev = dev_get_drvdata(dev);
+ u8 input[32] = { 0 };
+ u8 output[32];
+ u16 data;
+ int ret;
+
+ ret = msi_wmi_platform_query(wdev, MSI_PLATFORM_GET_FAN, input, sizeof(input), output,
+ sizeof(output));
+ if (ret < 0)
+ return ret;
+
+ data = get_unaligned_be16(&output[channel * 2 + 1]);
+ if (!data)
+ *val = 0;
+ else
+ *val = 480000 / data;
+
+ return 0;
+}
+
+static const struct hwmon_ops msi_wmi_platform_ops = {
+ .is_visible = msi_wmi_platform_is_visible,
+ .read = msi_wmi_platform_read,
+};
+
+static const struct hwmon_channel_info * const msi_wmi_platform_info[] = {
+ HWMON_CHANNEL_INFO(fan,
+ HWMON_F_INPUT,
+ HWMON_F_INPUT,
+ HWMON_F_INPUT,
+ HWMON_F_INPUT
+ ),
+ NULL
+};
+
+static const struct hwmon_chip_info msi_wmi_platform_chip_info = {
+ .ops = &msi_wmi_platform_ops,
+ .info = msi_wmi_platform_info,
+};
+
+static ssize_t msi_wmi_platform_write(struct file *fp, const char __user *input, size_t length,
+ loff_t *offset)
+{
+ struct seq_file *seq = fp->private_data;
+ struct msi_wmi_platform_debugfs_data *data = seq->private;
+ u8 payload[32] = { };
+ ssize_t ret;
+
+ /* Do not allow partial writes */
+ if (*offset != 0)
+ return -EINVAL;
+
+ /* Do not allow incomplete command buffers */
+ if (length != data->length)
+ return -EINVAL;
+
+ ret = simple_write_to_buffer(payload, sizeof(payload), offset, input, length);
+ if (ret < 0)
+ return ret;
+
+ down_write(&data->buffer_lock);
+ ret = msi_wmi_platform_query(data->wdev, data->method, payload, data->length, data->buffer,
+ data->length);
+ up_write(&data->buffer_lock);
+
+ if (ret < 0)
+ return ret;
+
+ return length;
+}
+
+static int msi_wmi_platform_show(struct seq_file *seq, void *p)
+{
+ struct msi_wmi_platform_debugfs_data *data = seq->private;
+ int ret;
+
+ down_read(&data->buffer_lock);
+ ret = seq_write(seq, data->buffer, data->length);
+ up_read(&data->buffer_lock);
+
+ return ret;
+}
+
+static int msi_wmi_platform_open(struct inode *inode, struct file *fp)
+{
+ struct msi_wmi_platform_debugfs_data *data = inode->i_private;
+
+ /* The seq_file uses the last byte of the buffer for detecting buffer overflows */
+ return single_open_size(fp, msi_wmi_platform_show, data, data->length + 1);
+}
+
+static const struct file_operations msi_wmi_platform_debugfs_fops = {
+ .owner = THIS_MODULE,
+ .open = msi_wmi_platform_open,
+ .read = seq_read,
+ .write = msi_wmi_platform_write,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void msi_wmi_platform_debugfs_remove(void *data)
+{
+ struct dentry *dir = data;
+
+ debugfs_remove_recursive(dir);
+}
+
+static void msi_wmi_platform_debugfs_add(struct wmi_device *wdev, struct dentry *dir,
+ const char *name, enum msi_wmi_platform_method method)
+{
+ struct msi_wmi_platform_debugfs_data *data;
+ struct dentry *entry;
+
+ data = devm_kzalloc(&wdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return;
+
+ data->wdev = wdev;
+ data->method = method;
+ init_rwsem(&data->buffer_lock);
+
+ /* The ACPI firmware for now always requires a 32 byte input buffer due to
+ * a peculiarity in how Windows handles the CreateByteField() ACPI operator.
+ */
+ data->length = 32;
+
+ entry = debugfs_create_file(name, 0600, dir, data, &msi_wmi_platform_debugfs_fops);
+ if (IS_ERR(entry))
+ devm_kfree(&wdev->dev, data);
+}
+
+static void msi_wmi_platform_debugfs_init(struct wmi_device *wdev)
+{
+ struct dentry *dir;
+ char dir_name[64];
+ int ret, method;
+
+ scnprintf(dir_name, ARRAY_SIZE(dir_name), "%s-%s", DRIVER_NAME, dev_name(&wdev->dev));
+
+ dir = debugfs_create_dir(dir_name, NULL);
+ if (IS_ERR(dir))
+ return;
+
+ ret = devm_add_action_or_reset(&wdev->dev, msi_wmi_platform_debugfs_remove, dir);
+ if (ret < 0)
+ return;
+
+ for (method = MSI_PLATFORM_GET_PACKAGE; method <= MSI_PLATFORM_GET_WMI; method++)
+ msi_wmi_platform_debugfs_add(wdev, dir, msi_wmi_platform_debugfs_names[method - 1],
+ method);
+}
+
+static int msi_wmi_platform_hwmon_init(struct wmi_device *wdev)
+{
+ struct device *hdev;
+
+ hdev = devm_hwmon_device_register_with_info(&wdev->dev, "msi_wmi_platform", wdev,
+ &msi_wmi_platform_chip_info, NULL);
+
+ return PTR_ERR_OR_ZERO(hdev);
+}
+
+static int msi_wmi_platform_ec_init(struct wmi_device *wdev)
+{
+ u8 input[32] = { 0 };
+ u8 output[32];
+ u8 flags;
+ int ret;
+
+ ret = msi_wmi_platform_query(wdev, MSI_PLATFORM_GET_EC, input, sizeof(input), output,
+ sizeof(output));
+ if (ret < 0)
+ return ret;
+
+ flags = output[MSI_PLATFORM_EC_FLAGS_OFFSET];
+
+ dev_dbg(&wdev->dev, "EC RAM version %lu.%lu\n",
+ FIELD_GET(MSI_PLATFORM_EC_MAJOR_MASK, flags),
+ FIELD_GET(MSI_PLATFORM_EC_MINOR_MASK, flags));
+ dev_dbg(&wdev->dev, "EC firmware version %.28s\n",
+ &output[MSI_PLATFORM_EC_VERSION_OFFSET]);
+
+ if (!(flags & MSI_PLATFORM_EC_IS_TIGERLAKE)) {
+ if (!force)
+ return -ENODEV;
+
+ dev_warn(&wdev->dev, "Loading on a non-Tigerlake platform\n");
+ }
+
+ return 0;
+}
+
+static int msi_wmi_platform_init(struct wmi_device *wdev)
+{
+ u8 input[32] = { 0 };
+ u8 output[32];
+ int ret;
+
+ ret = msi_wmi_platform_query(wdev, MSI_PLATFORM_GET_WMI, input, sizeof(input), output,
+ sizeof(output));
+ if (ret < 0)
+ return ret;
+
+ dev_dbg(&wdev->dev, "WMI interface version %u.%u\n",
+ output[MSI_PLATFORM_WMI_MAJOR_OFFSET],
+ output[MSI_PLATFORM_WMI_MINOR_OFFSET]);
+
+ if (output[MSI_PLATFORM_WMI_MAJOR_OFFSET] != MSI_WMI_PLATFORM_INTERFACE_VERSION) {
+ if (!force)
+ return -ENODEV;
+
+ dev_warn(&wdev->dev, "Loading despite unsupported WMI interface version (%u.%u)\n",
+ output[MSI_PLATFORM_WMI_MAJOR_OFFSET],
+ output[MSI_PLATFORM_WMI_MINOR_OFFSET]);
+ }
+
+ return 0;
+}
+
+static int msi_wmi_platform_probe(struct wmi_device *wdev, const void *context)
+{
+ int ret;
+
+ ret = msi_wmi_platform_init(wdev);
+ if (ret < 0)
+ return ret;
+
+ ret = msi_wmi_platform_ec_init(wdev);
+ if (ret < 0)
+ return ret;
+
+ msi_wmi_platform_debugfs_init(wdev);
+
+ return msi_wmi_platform_hwmon_init(wdev);
+}
+
+static const struct wmi_device_id msi_wmi_platform_id_table[] = {
+ { MSI_PLATFORM_GUID, NULL },
+ { }
+};
+MODULE_DEVICE_TABLE(wmi, msi_wmi_platform_id_table);
+
+static struct wmi_driver msi_wmi_platform_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ },
+ .id_table = msi_wmi_platform_id_table,
+ .probe = msi_wmi_platform_probe,
+ .no_singleton = true,
+};
+module_wmi_driver(msi_wmi_platform_driver);
+
+MODULE_AUTHOR("Armin Wolf <W_Armin@gmx.de>");
+MODULE_DESCRIPTION("MSI WMI platform features");
+MODULE_LICENSE("GPL");
projects / linux.git / commitdiff