diff --git a/include/media/audiochip.h b/include/media/audiochip.h
new file mode 100644
index 0000000..d3e9e30
--- /dev/null
+++ b/include/media/audiochip.h
@@ -0,0 +1,35 @@
+#ifndef AUDIOCHIP_H
+#define AUDIOCHIP_H
+
+/* ---------------------------------------------------------------------- */
+
+/* v4l device was opened in Radio mode */
+#define AUDC_SET_RADIO        _IO('m',2)
+/* select from TV,radio,extern,MUTE */
+#define AUDC_SET_INPUT        _IOW('m',17,int)
+
+/* audio inputs */
+#define AUDIO_TUNER        0x00
+#define AUDIO_RADIO        0x01
+#define AUDIO_EXTERN       0x02
+#define AUDIO_INTERN       0x03
+#define AUDIO_OFF          0x04
+#define AUDIO_ON           0x05
+#define AUDIO_EXTERN_1     AUDIO_EXTERN
+#define AUDIO_EXTERN_2     0x06
+#define AUDIO_MUTE         0x80
+#define AUDIO_UNMUTE       0x81
+
+/* all the stuff below is obsolete and just here for reference.  I'll
+ * remove it once the driver is tested and works fine.
+ *
+ * Instead creating alot of tiny API's for all kinds of different
+ * chips, we'll just pass throuth the v4l ioctl structs (v4l2 not
+ * yet...).  It is a bit less flexible, but most/all used i2c chips
+ * make sense in v4l context only.  So I think that's acceptable...
+ */
+
+/* misc stuff to pass around config info to i2c chips */
+#define AUDC_CONFIG_PINNACLE  _IOW('m',32,int)
+
+#endif /* AUDIOCHIP_H */