Adds lenovo-wmi-other driver which provides the Lenovo "Other Mode" WMI
interface that comes on some Lenovo "Gaming Series" hardware. Provides a
firmware-attributes class which enables the use of tunable knobs for SPL,
SPPT, and FPPT.
Signed-off-by: Derek J. Clark <derekjohn.clark@xxxxxxxxx>
---
v4:
- Treat Other Mode as a notifier chain head, use the notifier chain to
get the current mode from Gamezone.
- Add header file for Other Mode specific structs and finctions.
- Use component master bind to cache the capdata01 array locally.
- Drop all reference to external driver private data structs.
- Various fixes from review.
v3:
- Add notifier block and store result for getting the Gamezone interface
profile changes.
- Add driver as master component of capdata01 driver.
- Use FIELD_PREP where appropriate.
- Move macros and associated functions out of lemovo-wmi.h that are only
used by this driver.
v2:
- Use devm_kmalloc to ensure driver can be instanced, remove global
reference.
- Ensure reverse Christmas tree for all variable declarations.
- Remove extra whitespace.
- Use guard(mutex) in all mutex instances, global mutex.
- Use pr_fmt instead of adding the driver name to each pr_err.
- Remove noisy pr_info usage.
- Rename other_method_wmi to lenovo_wmi_om_priv and om_wmi to priv.
- Use list to get the lenovo_wmi_om_priv instance in some macro
called functions as the data provided by the macros that use it
doesn't pass a member of the struct for use in container_of.
- Do not rely on GameZone interface to grab the current fan mode.
---
MAINTAINERS | 2 +
drivers/platform/x86/Kconfig | 15 +
drivers/platform/x86/Makefile | 1 +
drivers/platform/x86/lenovo-wmi-other.c | 626 ++++++++++++++++++++++++
drivers/platform/x86/lenovo-wmi-other.h | 19 +
5 files changed, 663 insertions(+)
create mode 100644 drivers/platform/x86/lenovo-wmi-other.c
create mode 100644 drivers/platform/x86/lenovo-wmi-other.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 56ead241a053..87daee6075ad 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13170,6 +13170,8 @@ F: drivers/platform/x86/lenovo-wmi-events.c
F: drivers/platform/x86/lenovo-wmi-events.h
F: drivers/platform/x86/lenovo-wmi-helpers.c
F: drivers/platform/x86/lenovo-wmi-helpers.h
+F: drivers/platform/x86/lenovo-wmi-other.c
+F: drivers/platform/x86/lenovo-wmi-other.h
LENOVO WMI HOTKEY UTILITIES DRIVER
M: Jackie Dong <xy-jackie@xxxxxxx>
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 64663667f0cb..fc47604e37f7 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -471,6 +471,21 @@ config LENOVO_WMI_DATA01
tristate
depends on ACPI_WMI
+config LENOVO_WMI_TUNING
+ tristate "Lenovo Other Mode WMI Driver"
+ depends on ACPI_WMI
+ select FW_ATTR_CLASS
+ select LENOVO_WMI_DATA01
+ select LENOVO_WMI_EVENTS
+ select LENOVO_WMI_HELPERS
+ help
+ Say Y here if you have a WMI aware Lenovo Legion device and would like to use the
+ firmware_attributes API to control various tunable settings typically exposed by
+ Lenovo software in Windows.
+
+ To compile this driver as a module, choose M here: the module will
+ be called lenovo-wmi-other.
+
config IDEAPAD_LAPTOP
tristate "Lenovo IdeaPad Laptop Extras"
depends on ACPI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 7a35c77221b7..c6ce3c8594b1 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -72,6 +72,7 @@ obj-$(CONFIG_LENOVO_WMI_CAMERA) += lenovo-wmi-camera.o
obj-$(CONFIG_LENOVO_WMI_DATA01) += lenovo-wmi-capdata01.o
obj-$(CONFIG_LENOVO_WMI_EVENTS) += lenovo-wmi-events.o
obj-$(CONFIG_LENOVO_WMI_HELPERS) += lenovo-wmi-helpers.o
+obj-$(CONFIG_LENOVO_WMI_TUNING) += lenovo-wmi-other.o
# Intel
obj-y += intel/
diff --git a/drivers/platform/x86/lenovo-wmi-other.c b/drivers/platform/x86/lenovo-wmi-other.c
new file mode 100644
index 000000000000..b517e45338e0
--- /dev/null
+++ b/drivers/platform/x86/lenovo-wmi-other.c
@@ -0,0 +1,626 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Lenovo Other Mode WMI interface driver. This driver uses the fw_attributes
+ * class to expose the various WMI functions provided by the "Other Mode" WMI
+ * interface. This enables CPU and GPU power limit as well as various other
+ * attributes for devices that fall under the "Gaming Series" of Lenovo laptop
+ * devices. Each attribute exposed by the "Other Mode"" interface has a
+ * corresponding LENOVO_CAPABILITY_DATA_01 struct that allows the driver to
+ * probe details about the attribute such as set/get support, step, min, max,
+ * and default value. Each attibute has multiple pages, one for each of the
+ * fan profiles managed by the Gamezone interface.
+ *
+ * These attributes typically don't fit anywhere else in the sysfs and are set
+ * in Windows using one of Lenovo's multiple user applications.
+ *
+ * Copyright(C) 2025 Derek J. Clark <derekjohn.clark@xxxxxxxxx>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/bitfield.h>
+#include <linux/cleanup.h>
+#include <linux/component.h>
+#include <linux/container_of.h>
+#include <linux/device.h>
+#include <linux/gfp_types.h>
+#include <linux/idr.h>
+#include <linux/kobject.h>
+#include <linux/notifier.h>
+#include <linux/platform_profile.h>
+#include <linux/types.h>
+#include <linux/wmi.h>
+
+#include "lenovo-wmi-capdata01.h"
+#include "lenovo-wmi-events.h"
+#include "lenovo-wmi-gamezone.h"
+#include "lenovo-wmi-helpers.h"
+#include "lenovo-wmi-other.h"
+#include "firmware_attributes_class.h"
+
+/* Interface GUIDs */
+#define LENOVO_OTHER_METHOD_GUID "DC2A8805-3A8C-41BA-A6F7-092E0089CD3B"
+
+/* Device IDs */
+#define WMI_DEVICE_ID_CPU 0x01
+
+/* WMI_DEVICE_ID_CPU feature IDs */
+#define WMI_FEATURE_ID_CPU_SPPT 0x01 /* Short Term Power Limit */
+#define WMI_FEATURE_ID_CPU_FPPT 0x03 /* Long Term Power Limit */
+#define WMI_FEATURE_ID_CPU_SPL 0x02 /* Peak Power Limit */
+
+/* Type IDs*/
+#define WMI_TYPE_ID_NONE 0x00
+
+/* Method IDs */
+#define WMI_FEATURE_VALUE_GET 17 /* Other Mode Getter */
+#define WMI_FEATURE_VALUE_SET 18 /* Other Mode Setter */
+
+/* Attribute ID bitmasks */
+#define ATTR_DEV_ID_MASK GENMASK(31, 24)
+#define ATTR_FEAT_ID_MASK GENMASK(23, 16)
+#define ATTR_MODE_ID_MASK GENMASK(15, 8)
+#define ATTR_TYPE_ID_MASK GENMASK(7, 0)
+
+static BLOCKING_NOTIFIER_HEAD(om_chain_head);
+
+enum attribute_property {
+ DEFAULT_VAL,
+ MAX_VAL,
+ MIN_VAL,
+ STEP_VAL,
+ SUPPORTED,
+};
+
+struct lwmi_om_priv {
+ struct blocking_notifier_head nhead;
+ struct component_master_ops *ops;
+ struct cd01_list cd01_list;
+ struct device *fw_attr_dev;
+ struct kset *fw_attr_kset;
+ struct notifier_block nb;
+ struct wmi_device *wdev;
+ struct ida ida;
+ int ida_id;
+};
+
+/* Tunable attribute that uses LENOVO_CAPABILITY_DATA_01 */
+struct tunable_attr_01 {
+ u32 type_id;
+ u32 device_id;
+ u32 feature_id;
+ u32 store_value;
+ struct device *dev;
+ struct capdata01 *capdata;
+};
+
+/* Tunable Attributes */
+struct tunable_attr_01 ppt_pl1_spl = { .device_id = WMI_DEVICE_ID_CPU,
+ .feature_id = WMI_FEATURE_ID_CPU_SPL,
+ .type_id = WMI_TYPE_ID_NONE };
+struct tunable_attr_01 ppt_pl2_sppt = { .device_id = WMI_DEVICE_ID_CPU,
+ .feature_id = WMI_FEATURE_ID_CPU_SPPT,
+ .type_id = WMI_TYPE_ID_NONE };
+struct tunable_attr_01 ppt_pl3_fppt = { .device_id = WMI_DEVICE_ID_CPU,
+ .feature_id = WMI_FEATURE_ID_CPU_FPPT,
+ .type_id = WMI_TYPE_ID_NONE };
+
+struct capdata01_attr_group {
+ const struct attribute_group *attr_group;
+ struct tunable_attr_01 *tunable_attr;
+};
+
+#define FW_ATTR_FOLDER "lenovo-wmi-other"
+
+/* Notifier Methods */
+int lwmi_om_register_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_register(&om_chain_head, nb);
+}
+EXPORT_SYMBOL_NS_GPL(lwmi_om_register_notifier, "LENOVO_WMI_OTHER");
+
+int lwmi_om_unregister_notifier(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_unregister(&om_chain_head, nb);
+}
+EXPORT_SYMBOL_NS_GPL(lwmi_om_unregister_notifier, "LENOVO_WMI_OTHER");
+
+static void devm_lwmi_om_unregister_notifier(void *data)
+{
+ struct notifier_block *nb = data;
+
+ lwmi_om_unregister_notifier(nb);
+}
+
+int devm_lwmi_om_register_notifier(struct device *dev,
+ struct notifier_block *nb)
+{
+ int ret;
+
+ ret = lwmi_om_register_notifier(nb);
+ if (ret < 0)
+ return ret;
+
+ return devm_add_action_or_reset(dev, devm_lwmi_om_unregister_notifier,
+ nb);
+}
+EXPORT_SYMBOL_NS_GPL(devm_lwmi_om_register_notifier, "LENOVO_WMI_OTHER");
+
+static int lwmi_om_notifier_call(enum thermal_mode *mode)
+{
+ int ret;
+
+ ret = blocking_notifier_call_chain(&om_chain_head, THERMAL_MODE_EVENT,
+ mode);
+
+ if (ret != NOTIFY_OK)
+ return -EINVAL;
+
+ if (*mode < SMARTFAN_MODE_QUIET || *mode > SMARTFAN_MODE_CUSTOM)
+ return -EINVAL;
+
+ return 0;
+}
+
+/* Attribute Methods */
+/*
+ * int_type_show() - Emit the data type for an integer attribute
+ * @kobj: Pointer to the driver object.
+ * @kobj_attribute: Pointer to the attribute calling this function.
+ * @buf: The buffer to write to.
+ *
+ * Returns: Number of characters written to buf.
+ */
+static ssize_t int_type_show(struct kobject *kobj, struct kobj_attribute *kattr,
+ char *buf)
+{
+ return sysfs_emit(buf, "integer\n");
+}
+
+/*
+ * attr_capdata01_get - Get the data of the specified attribute
+ * from lwmi_om->cd01.
+ * @tunable_attr: The attribute to be populated.
+ *
+ * Returns: Either a pointer to capability data, or NULL.
+ */
+static struct capdata01 *
+attr_capdata01_get_data(struct lwmi_om_priv *priv,
+ struct tunable_attr_01 *tunable_attr,
+ enum thermal_mode mode)
+{
+ u32 attribute_id =
+ FIELD_PREP(ATTR_DEV_ID_MASK, tunable_attr->device_id) |
+ FIELD_PREP(ATTR_FEAT_ID_MASK, tunable_attr->feature_id) |
+ FIELD_PREP(ATTR_MODE_ID_MASK, mode) |
+ FIELD_PREP(ATTR_TYPE_ID_MASK, tunable_attr->type_id);
+ int idx;
+
+ for (idx = 0; idx < priv->cd01_list.count; idx++) {
+ if (!priv->cd01_list.data[idx])
+ continue;
+
+ if (priv->cd01_list.data[idx]->id != attribute_id)
+ continue;
+ return priv->cd01_list.data[idx];
+ }
+ return NULL;
+}
+
+/**
+ * attr_capdata01_show() - Get the value of the specified attribute property
+ * from LENOVO_CAPABILITY_DATA_01.
+ * @kobj: Pointer to the driver object.
+ * @kobj_attribute: Pointer to the attribute calling this function.
+ * @buf: The buffer to write to.
+ * @tunable_attr: The attribute to be read.
+ * @prop: The property of this attribute to be read.
+ *
+ * This function is intended to be generic so it can be called from any "_show"
+ * attribute which works only with integers.
+ *
+ * If the WMI is success, then the sysfs attribute is notified.
+ *
+ * Returns: Either number of characters written to buf, or an error.
+ */
+static ssize_t attr_capdata01_show(struct kobject *kobj,
+ struct kobj_attribute *kattr, char *buf,
+ struct tunable_attr_01 *tunable_attr,
+ enum attribute_property prop)
+{
+ struct lwmi_om_priv *priv = dev_get_drvdata(tunable_attr->dev);
+ struct capdata01 *capdata;
+ int value;
+
+ if (!priv)
+ return -ENODEV;
+
+ capdata = attr_capdata01_get_data(priv, tunable_attr,
+ SMARTFAN_MODE_CUSTOM);
+
+ if (!capdata)
+ return -ENODEV;
+
+ switch (prop) {
+ case DEFAULT_VAL:
+ value = capdata->default_value;
+ break;
+ case MAX_VAL:
+ value = capdata->max_value;
+ break;
+ case MIN_VAL:
+ value = capdata->min_value;
+ break;
+ case STEP_VAL:
+ value = capdata->step;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return sysfs_emit(buf, "%d\n", value);
+}
+
+/* Simple attribute creation */
+
+/*
+ * att_current_value_store() - Set the current value of the given attribute
+ * @kobj: Pointer to the driver object.
+ * @kobj_attribute: Pointer to the attribute calling this function.
+ * @buf: The buffer to read from, this is parsed to `int` type.
+ * @count: Required by sysfs attribute macros, pass in from the callee attr.
+ * @tunable_attr: The attribute to be stored.
+ *
+ * This function is intended to be generic so it can be called from any
+ * attribute's "current_value_store" which works only with integers. The
+ * integer to be sent to the WMI method is range checked and an error returned
+ * if out of range.
+ *
+ * If the value is valid and WMI is success, then the sysfs attribute is
+ * notified.
+ *
+ * Returns: Either count, or an error.
+ */
+static ssize_t attr_current_value_store(struct kobject *kobj,
+ struct kobj_attribute *kattr,
+ const char *buf, size_t count,
+ struct tunable_attr_01 *tunable_attr)
+{
+ struct lwmi_om_priv *priv = dev_get_drvdata(tunable_attr->dev);
+ struct wmi_method_args_32 args;
+ struct capdata01 *capdata;
+ enum thermal_mode mode;
+ u32 attribute_id;
+ u32 value;
+ int err;
+
+ if (!priv)
+ return -ENODEV;
+
+ err = lwmi_om_notifier_call(&mode);
+ if (err)
+ return err;
+
+ if (mode != SMARTFAN_MODE_CUSTOM)
+ return -EINVAL;
+
+ capdata = attr_capdata01_get_data(priv, tunable_attr, mode);
+
+ if (!capdata)
+ return -ENODEV;
+
+ attribute_id = FIELD_PREP(ATTR_DEV_ID_MASK, tunable_attr->device_id) |
+ FIELD_PREP(ATTR_FEAT_ID_MASK, tunable_attr->feature_id) |
+ FIELD_PREP(ATTR_MODE_ID_MASK, mode) |
+ FIELD_PREP(ATTR_TYPE_ID_MASK, tunable_attr->type_id);
+
+ err = kstrtouint(buf, 10, &value);
+ if (err)
+ return err;
+
+ if (value < capdata->min_value || value > capdata->max_value)
+ return -EINVAL;
+
+ args.arg0 = attribute_id;
+ args.arg1 = value;
+
+ err = lwmi_dev_evaluate_method(priv->wdev, 0x0, WMI_FEATURE_VALUE_SET,
+ (unsigned char *)&args, sizeof(args),
+ NULL);
+
+ if (err)
+ return err;
+
+ tunable_attr->store_value = value;
+ return count;
+};
+
+/*
+ * attr_current_value_show() - Get the current value of the given attribute
+ * @kobj: Pointer to the driver object.
+ * @kobj_attribute: Pointer to the attribute calling this function.
+ * @buf: The buffer to write to.
+ * @tunable_attr: The attribute to be read.
+ *
+ * This function is intended to be generic so it can be called from any "_show"
+ * attribute which works only with integers.
+ *
+ * If the WMI is success, then the sysfs attribute is notified.
+ *
+ * Returns: Either number of characters written to buf, or an error.
+ */
+static ssize_t attr_current_value_show(struct kobject *kobj,
+ struct kobj_attribute *kattr, char *buf,
+ struct tunable_attr_01 *tunable_attr)
+{
+ struct lwmi_om_priv *priv = dev_get_drvdata(tunable_attr->dev);
+ struct wmi_method_args_32 args;
+ enum thermal_mode mode;
+ u32 attribute_id;
+ int retval;
+ int err;
+
+ if (!priv)
+ return -ENODEV;
+
+ err = lwmi_om_notifier_call(&mode);
+ if (err)
+ return err;
+
+ attribute_id = FIELD_PREP(ATTR_DEV_ID_MASK, tunable_attr->device_id) |
+ FIELD_PREP(ATTR_FEAT_ID_MASK, tunable_attr->feature_id) |
+ FIELD_PREP(ATTR_MODE_ID_MASK, mode) |
+ FIELD_PREP(ATTR_TYPE_ID_MASK, tunable_attr->type_id);
+
+ args.arg0 = attribute_id;
+
+ err = lwmi_dev_evaluate_method(priv->wdev, 0x0, WMI_FEATURE_VALUE_GET,
+ (unsigned char *)&args, sizeof(args),
+ &retval);
+
+ if (err)
+ return err;
+
+ return sysfs_emit(buf, "%d\n", retval);
+}
+
+/* Attribute macros */
+#define __LL_ATTR_RO(_func, _name) \
+ { \
+ .attr = { .name = __stringify(_name), .mode = 0444 }, \
+ .show = _func##_##_name##_show, \
+ }
+
+#define __LL_ATTR_RO_AS(_name, _show) \
+ { \
+ .attr = { .name = __stringify(_name), .mode = 0444 }, \
+ .show = _show, \
+ }
+
+#define __LL_ATTR_RW(_func, _name) \
+ __ATTR(_name, 0644, _func##_##_name##_show, _func##_##_name##_store)
+
+/* Shows a formatted static variable */
+#define __ATTR_SHOW_FMT(_prop, _attrname, _fmt, _val) \
+ static ssize_t _attrname##_##_prop##_show( \
+ struct kobject *kobj, struct kobj_attribute *kattr, char *buf) \
+ { \
+ return sysfs_emit(buf, _fmt, _val); \
+ } \
+ static struct kobj_attribute attr_##_attrname##_##_prop = \
+ __LL_ATTR_RO(_attrname, _prop)
+
+/* Attribute current value read/write */
+#define __LL_TUNABLE_CURRENT_VALUE_CAP01(_attrname) \
+ static ssize_t _attrname##_current_value_store( \
+ struct kobject *kobj, struct kobj_attribute *kattr, \
+ const char *buf, size_t count) \
+ { \
+ return attr_current_value_store(kobj, kattr, buf, count, \
+ &_attrname); \
+ } \
+ static ssize_t _attrname##_current_value_show( \
+ struct kobject *kobj, struct kobj_attribute *kattr, char *buf) \
+ { \
+ return attr_current_value_show(kobj, kattr, buf, &_attrname); \
+ } \
+ static struct kobj_attribute attr_##_attrname##_current_value = \
+ __LL_ATTR_RW(_attrname, current_value)
+
+/* Attribute property read only */
+#define __LL_TUNABLE_RO_CAP01(_prop, _attrname, _prop_type) \
+ static ssize_t _attrname##_##_prop##_show( \
+ struct kobject *kobj, struct kobj_attribute *kattr, char *buf) \
+ { \
+ return attr_capdata01_show(kobj, kattr, buf, &_attrname, \
+ _prop_type); \
+ } \
+ static struct kobj_attribute attr_##_attrname##_##_prop = \
+ __LL_ATTR_RO(_attrname, _prop)
+
+#define ATTR_GROUP_LL_TUNABLE_CAP01(_attrname, _fsname, _dispname) \
+ __LL_TUNABLE_CURRENT_VALUE_CAP01(_attrname); \
+ __LL_TUNABLE_RO_CAP01(default_value, _attrname, DEFAULT_VAL); \
+ __ATTR_SHOW_FMT(display_name, _attrname, "%s\n", _dispname); \
+ __LL_TUNABLE_RO_CAP01(max_value, _attrname, MAX_VAL); \
+ __LL_TUNABLE_RO_CAP01(min_value, _attrname, MIN_VAL); \
+ __LL_TUNABLE_RO_CAP01(scalar_increment, _attrname, STEP_VAL); \
+ static struct kobj_attribute attr_##_attrname##_type = \
+ __LL_ATTR_RO_AS(type, int_type_show); \
+ static struct attribute *_attrname##_attrs[] = { \
+ &attr_##_attrname##_current_value.attr, \
+ &attr_##_attrname##_default_value.attr, \
+ &attr_##_attrname##_display_name.attr, \
+ &attr_##_attrname##_max_value.attr, \
+ &attr_##_attrname##_min_value.attr, \
+ &attr_##_attrname##_scalar_increment.attr, \
+ &attr_##_attrname##_type.attr, \
+ NULL, \
+ }; \
+ static const struct attribute_group _attrname##_attr_group = { \
+ .name = _fsname, .attrs = _attrname##_attrs \
+ }
+
+ATTR_GROUP_LL_TUNABLE_CAP01(ppt_pl1_spl, "ppt_pl1_spl",
+ "Set the CPU sustained power limit");
+ATTR_GROUP_LL_TUNABLE_CAP01(ppt_pl2_sppt, "ppt_pl2_sppt",
+ "Set the CPU slow package power tracking limit");
+ATTR_GROUP_LL_TUNABLE_CAP01(ppt_pl3_fppt, "ppt_pl3_fppt",
+ "Set the CPU fast package power tracking limit");
+
+static struct capdata01_attr_group capdata01_attr_groups[] = {
+ { &ppt_pl1_spl_attr_group, &ppt_pl1_spl },
+ { &ppt_pl2_sppt_attr_group, &ppt_pl2_sppt },
+ { &ppt_pl3_fppt_attr_group, &ppt_pl3_fppt },
+ {},
+};
+
+/*
+ * lwmi_om_fw_attr_add() - Registers all capdata01_attr_groups[] attributes as
+ * firmware_attributes_class members.
+ * @priv: The Other Mode driver data.
+ *
+ * Returns: Either 0, or an error.
+ */
+static int lwmi_om_fw_attr_add(struct lwmi_om_priv *priv)
+{
+ int err, i;
+
+ ida_init(&priv->ida);
+ priv->ida_id = ida_alloc(&priv->ida, GFP_KERNEL);
+ if (priv->ida_id < 0)
+ return priv->ida_id;
+
+ priv->fw_attr_dev = device_create(&firmware_attributes_class, NULL,
+ MKDEV(0, 0), NULL, "%s",
+ FW_ATTR_FOLDER);
+ if (IS_ERR(priv->fw_attr_dev)) {
+ err = PTR_ERR(priv->fw_attr_dev);
+ return err;
+ }
+
+ priv->fw_attr_kset = kset_create_and_add("attributes", NULL,
+ &priv->fw_attr_dev->kobj);
+ if (!priv->fw_attr_kset) {
+ err = -ENOMEM;
+ goto err_destroy_classdev;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(capdata01_attr_groups) - 1; i++) {
+ err = sysfs_create_group(&priv->fw_attr_kset->kobj,
+ capdata01_attr_groups[i].attr_group);
+ if (err) {
+ pr_debug("Failed to create sysfs-group for %s: %d\n",
+ capdata01_attr_groups[i].attr_group->name,
+ err);
+ goto err_remove_groups;
+ }
+ capdata01_attr_groups[i].tunable_attr->dev = &priv->wdev->dev;
+ }
+ return 0;
+
+err_remove_groups:
+ ida_free(&priv->ida, priv->ida_id);
+ while (i-- >= 0) {
+ sysfs_remove_group(&priv->fw_attr_kset->kobj,
+ capdata01_attr_groups[i].attr_group);
+ }
+ kset_unregister(priv->fw_attr_kset);
+
+err_destroy_classdev:
+ device_unregister(priv->fw_attr_dev);
+ return err;
+}
+
+/*
+ * lwmi_om_fw_attr_remove() - Unregisters all capdata01_attr_groups[] attributes as
+ * firmware_attributes_class members.
+ * @priv: The Other Mode driver data.
+ *
+ */
+static void lwmi_om_fw_attr_remove(struct lwmi_om_priv *priv)
+{
+ int size = ARRAY_SIZE(capdata01_attr_groups);
+
+ while (--size >= 0) {
+ sysfs_remove_group(&priv->fw_attr_kset->kobj,
+ capdata01_attr_groups[size].attr_group);
+ }
+ kset_unregister(priv->fw_attr_kset);
+ device_unregister(priv->fw_attr_dev);
+}
+
+static int lwmi_om_master_bind(struct device *dev)
+{
+ struct lwmi_om_priv *priv = dev_get_drvdata(dev);
+ int ret;
+
+ ret = component_bind_all(dev, &priv->cd01_list);
+ if (ret)
+ return ret;
+
+ return lwmi_om_fw_attr_add(priv);
+}
+
+static void lwmi_om_master_unbind(struct device *dev)
+{
+ component_unbind_all(dev, NULL);
+}
+
+static const struct component_master_ops lwmi_om_master_ops = {
+ .bind = lwmi_om_master_bind,
+ .unbind = lwmi_om_master_unbind,
+};
+
+static int lwmi_other_probe(struct wmi_device *wdev, const void *context)
+{
+ struct component_match *master_match = NULL;
+ struct lwmi_om_priv *priv;
+
+ priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->wdev = wdev;
+ dev_set_drvdata(&wdev->dev, priv);
+
+ component_match_add(&wdev->dev, &master_match, lwmi_cd01_match, NULL);
+ if (IS_ERR(master_match))
+ return PTR_ERR(master_match);
+
+ return component_master_add_with_match(&wdev->dev, &lwmi_om_master_ops,
+ master_match);
+}
+
+static void lwmi_other_remove(struct wmi_device *wdev)
+{
+ struct lwmi_om_priv *priv = dev_get_drvdata(&wdev->dev);
+
+ component_master_del(&wdev->dev, &lwmi_om_master_ops);
+ lwmi_om_fw_attr_remove(priv);
+ ida_free(&priv->ida, priv->ida_id);
+}
+
+static const struct wmi_device_id lwmi_other_id_table[] = {
+ { LENOVO_OTHER_METHOD_GUID, NULL },
+ {}
+};
+
+static struct wmi_driver lwmi_other_driver = {
+ .driver = {
+ .name = "lenovo_wmi_other",
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ },
+ .id_table = lwmi_other_id_table,
+ .probe = lwmi_other_probe,
+ .remove = lwmi_other_remove,
+ .no_singleton = true,
+};
+
+module_wmi_driver(lwmi_other_driver);
+
+MODULE_IMPORT_NS("LENOVO_WMI_CD01");
+MODULE_IMPORT_NS("LENOVO_WMI_HELPERS");
+MODULE_DEVICE_TABLE(wmi, lwmi_other_id_table);
+MODULE_AUTHOR("Derek J. Clark <derekjohn.clark@xxxxxxxxx>");
+MODULE_DESCRIPTION("Lenovo Other Mode WMI Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/lenovo-wmi-other.h b/drivers/platform/x86/lenovo-wmi-other.h
new file mode 100644
index 000000000000..9fba35ef1137
--- /dev/null
+++ b/drivers/platform/x86/lenovo-wmi-other.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * Copyright(C) 2025 Derek J. Clark <derekjohn.clark@xxxxxxxxx>
+ *
+ */
+
+#ifndef _LENOVO_WMI_OTHER_H_
+#define _LENOVO_WMI_OTHER_H_
+
+#include <linux/device.h>
+#include <linux/notifier.h>
+#include <linux/types.h>
+
+int lwmi_om_register_notifier(struct notifier_block *nb);
+int lwmi_om_unregister_notifier(struct notifier_block *nb);
+int devm_lwmi_om_register_notifier(struct device *dev,
+ struct notifier_block *nb);
+
+#endif /* !_LENOVO_WMI_H_ */
--
2.49.0
