Index: firmware/target/arm/ipod/button-clickwheel.c
===================================================================
--- firmware/target/arm/ipod/button-clickwheel.c	(revision 21912)
+++ firmware/target/arm/ipod/button-clickwheel.c	(working copy)
@@ -310,6 +310,7 @@
         {
             /* unlock -> enable wheel sensor */
             DEV_EN |= DEV_OPTO;
+            opto_i2c_init();
         }
     }