1 files changed, 20 insertions, 0 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 63f2e6ed698f..fab9f70fe39d 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -192,6 +192,26 @@ extern int ec_transaction(u8 command,
 
 #endif /*CONFIG_ACPI_EC*/
 
+#if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE)
+
+typedef void (*wmi_notify_handler) (u32 value, void *context);
+
+extern acpi_status wmi_evaluate_method(const char *guid, u8 instance,
+                                        u32 method_id,
+                                        const struct acpi_buffer *in,
+                                        struct acpi_buffer *out);
+extern acpi_status wmi_query_block(const char *guid, u8 instance,
+                                        struct acpi_buffer *out);
+extern acpi_status wmi_set_block(const char *guid, u8 instance,
+                                        const struct acpi_buffer *in);
+extern acpi_status wmi_install_notify_handler(const char *guid,
+                                        wmi_notify_handler handler, void *data);
+extern acpi_status wmi_remove_notify_handler(const char *guid);
+extern acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out);
+extern bool wmi_has_guid(const char *guid);
+
+#endif  /* CONFIG_ACPI_WMI */
+
 extern int acpi_blacklisted(void);
 #ifdef CONFIG_DMI
 extern void acpi_dmi_osi_linux(int enable, const struct dmi_system_id *d);