diff --git a/driver/counter_io_calls.h b/driver/counter_io_calls.h
index 9cc7708..165eb36 100644
--- a/driver/counter_io_calls.h
+++ b/driver/counter_io_calls.h
@@ -7,13 +7,20 @@
 #define u32 uint32_t
 #endif
 
+#include "leds_codes.h"
+
 struct observation {
   u64 ts_sec;
   u64 ts_nsec;
   u32 value;
 };
 
+struct led_cmd {
+  enum led_color_e color;
+  enum led_state_e state;
+};
 
+#define LED_CMD _IOW('l', 'c', struct led_cmd *);
 
 
 #endif /* _COUNTER_IO_CALLS_H_ */
diff --git a/driver/leds.h b/driver/leds.h
index c3dc3db..3793b09 100644
--- a/driver/leds.h
+++ b/driver/leds.h
@@ -3,10 +3,10 @@
 
 #include <linux/platform_device.h>
 
-extern struct platform_driver leds_driver;
+#include "leds_codes.h"
 
-enum led_color_e { e_RED, e_BLUE };
-enum led_state_e { e_ON, e_OFF };
+
+extern struct platform_driver leds_driver;
 
 void led_ctrl(enum led_color_e color, enum led_state_e state);
 
diff --git a/driver/leds_codes.h b/driver/leds_codes.h
new file mode 100644
index 0000000..b16d0d4
--- /dev/null
+++ b/driver/leds_codes.h
@@ -0,0 +1,7 @@
+#ifndef _LEDS_CODES_H_
+#define _LEDS_CODES_H_
+
+enum led_color_e { e_RED, e_BLUE };
+enum led_state_e { e_ON, e_OFF };
+
+#endif /* _LEDS_CODES_H_ */