diff --git a/sound/pci/au88x0/au88x0.h b/sound/pci/au88x0/au88x0.h
index ee1ede1..b1197cf 100644
--- a/sound/pci/au88x0/au88x0.h
+++ b/sound/pci/au88x0/au88x0.h
@@ -79,6 +79,14 @@
 #define VORTEX_RESOURCE_A3D	0x00000004
 #define VORTEX_RESOURCE_LAST	0x00000005
 
+/* codec io: VORTEX_CODEC_IO bits */
+#define VORTEX_CODEC_ID_SHIFT	24
+#define VORTEX_CODEC_WRITE	0x00800000
+#define VORTEX_CODEC_ADDSHIFT 	16
+#define VORTEX_CODEC_ADDMASK	0x7f0000
+#define VORTEX_CODEC_DATSHIFT	0
+#define VORTEX_CODEC_DATMASK	0xffff
+
 /* Check for SDAC bit in "Extended audio ID" AC97 register */
 //#define VORTEX_IS_QUAD(x) (((x)->codec == NULL) ?  0 : ((x)->codec->ext_id&0x80))
 #define VORTEX_IS_QUAD(x) ((x)->isquad)