Index: uspace/lib/c/include/device/led_dev.h
===================================================================
--- uspace/lib/c/include/device/led_dev.h	(revision 2cb32f92b7b1a3e825659cf1c9eca401e3ff9834)
+++ uspace/lib/c/include/device/led_dev.h	(revision 2cb32f92b7b1a3e825659cf1c9eca401e3ff9834)
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2014 Martin Decky
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup libc
+ * @{
+ */
+/** @file
+ */
+
+#ifndef LIBC_DEVICE_LED_DEV_H_
+#define LIBC_DEVICE_LED_DEV_H_
+
+#include <async.h>
+#include <io/pixel.h>
+
+typedef enum {
+	LED_DEV_COLOR_SET = 0
+} led_dev_method_t;
+
+extern int led_dev_color_set(async_sess_t *, pixel_t);
+
+#endif
Index: uspace/lib/c/include/ipc/dev_iface.h
===================================================================
--- uspace/lib/c/include/ipc/dev_iface.h	(revision d9be488aaf4d20f1c61c594ac3595cdf66202e01)
+++ uspace/lib/c/include/ipc/dev_iface.h	(revision 2cb32f92b7b1a3e825659cf1c9eca401e3ff9834)
@@ -65,4 +65,7 @@
 	CLOCK_DEV_IFACE,
 
+	/** Interface provided by LED devices */
+	LED_DEV_IFACE,
+
 	/** Interface provided by battery powered devices */
 	BATTERY_DEV_IFACE,