diff --git a/led/led_stub.c b/led/led_stub.c
index 644efe3..1deac2f 100644
--- a/led/led_stub.c
+++ b/led/led_stub.c
@@ -1,7 +1,51 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 #include <hardware/led.h>
 
+typedef int  (*LedFunc)(unsigned, int, int);
+
+#ifdef CONFIG_LED_SARDINE
+extern int  sardine_set_led_state(unsigned, int, int);
+#  define HW_LED_FUNC  sardine_set_led_state
+#endif
+
+#ifdef CONFIG_LED_TROUT
+extern int  trout_set_led_state(unsigned, int, int);
+#  define HW_LED_FUNC  trout_set_led_state
+#endif
+
+#ifdef CONFIG_LED_QEMU
+#include "qemu.h"
+static int
+qemu_set_led_state(unsigned color, int on, int off)
+{
+    qemu_control_command( "set_led_state:%08x:%d:%d", color, on, off );
+    return 0;
+}
+#endif
+
 int
 set_led_state(unsigned color, int on, int off)
 {
+#ifdef CONFIG_LED_QEMU
+    QEMU_FALLBACK(set_led_state(color,on,off));
+#endif
+#ifdef HW_LED_FUNC
+    return HW_LED_FUNC(color, on, off);
+#else
     return 0;
+#endif
 }