X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=include%2Fsound.h;h=155e1b40e28a1c91e9a6f8b228b46a12ff3c30c0;hb=637b84ce3094c73f1c6c34376af93a81e18ed4bf;hp=94922f66daeaf6d5a56c3722d243eeeb254d9f8a;hpb=412665b46134f93464c09405e02f08ac9c62526d;p=karo-tx-uboot.git

diff --git a/include/sound.h b/include/sound.h
index 94922f66da..155e1b40e2 100644
--- a/include/sound.h
+++ b/include/sound.h
@@ -2,23 +2,7 @@
  * Copyright (C) 2012 Samsung Electronics
  * R. Chandrasekar < rcsekar@samsung.com>
  *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef __SOUND_H__
@@ -45,6 +29,15 @@ struct sound_codec_info {
 	enum en_sound_codec codec_type;
 };
 
+/*
+ * Generates square wave sound data for 1 second
+ *
+ * @param data          data buffer pointer
+ * @param size          size of the buffer
+ * @param freq          frequency of the wave
+ */
+void sound_create_square_wave(unsigned short *data, int size, uint32_t freq);
+
 /*
  * Initialises audio sub system
  * @param blob	Pointer of device tree node or NULL if none.