Index: uspace/lib/c/generic/device/led_dev.c
===================================================================
--- uspace/lib/c/generic/device/led_dev.c	(revision 527f1ca698c19887792eba16533a0495b1b17014)
+++ uspace/lib/c/generic/device/led_dev.c	(revision 527f1ca698c19887792eba16533a0495b1b17014)
@@ -0,0 +1,57 @@
+/*
+ * 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
+ */
+
+#include <errno.h>
+#include <async.h>
+#include <io/pixel.h>
+#include <ipc/dev_iface.h>
+#include <device/led_dev.h>
+
+int led_dev_color_set(async_sess_t *sess, pixel_t pixel)
+{
+	async_exch_t *exch = async_exchange_begin(sess);
+	
+	aid_t req = async_send_2(exch, DEV_IFACE_ID(LED_DEV_IFACE),
+	    LED_DEV_COLOR_SET, (sysarg_t) pixel, NULL);
+	
+	async_exchange_end(exch);
+	
+	sysarg_t rc;
+	async_wait_for(req, &rc);
+	
+	return (int) rc;
+}
+
+/** @}
+ */