diff --git a/include/acpi/acpigen.h b/include/acpi/acpigen.h
index 1f37c9c..59d7c2f 100644
--- a/include/acpi/acpigen.h
+++ b/include/acpi/acpigen.h
@@ -56,6 +56,7 @@
 	AND_OP			= 0x7b,
 	OR_OP			= 0x7d,
 	NOT_OP			= 0x80,
+	DEVICE_OP		= 0x82,
 	POWER_RES_OP		= 0x84,
 	RETURN_OP		= 0xa4,
 };
@@ -314,6 +315,14 @@
 				     int nargs);
 
 /**
+ * acpigen_write_device() - Write an ACPI device
+ *
+ * @ctx: ACPI context pointer
+ * @name: Device name to write
+ */
+void acpigen_write_device(struct acpi_ctx *ctx, const char *name);
+
+/**
  * acpigen_write_sta() - Write a _STA method
  *
  * @ctx: ACPI context pointer