--- linux-2.6.30.4-orig/include/linux/i2c-id.h	2009-07-30 15:34:47.000000000 -0700
+++ linux-2.6.30.4-new/include/linux/i2c-id.h	2009-08-20 14:28:39.143143000 -0700
@@ -37,6 +37,7 @@
 #define I2C_DRIVERID_TVAUDIO    29      /* Generic TV sound driver      */
 #define I2C_DRIVERID_SAA711X	73	/* saa711x video encoders	*/
 #define I2C_DRIVERID_INFRARED	75	/* I2C InfraRed on Video boards */
+#define I2C_DRIVERID_WM8750             90      /* Wolfson WM8750 audio codec */
 
 /*
  * ---- Adapter types ----------------------------------------------------
