SOUND: SAMSUNG: Add I2S driver

This patch adds driver for I2S interface specific to samsung.

Signed-off-by: R. Chandrasekar <rcsekar@samsung.com>
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

1 files changed, 62 insertions, 0 deletions

diff --git a/include/sound.h b/include/sound.h
new file mode 100644
index 00000000000..ea0b1158f80
--- /dev/null
+++ b/include/sound.h
@@ -0,0 +1,62 @@
+/*
+ * 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
+ */
+
+#ifndef __SOUND_H__
+#define __SOUND_H__
+
+/* sound codec enum */
+enum en_sound_codec {
+	CODEC_WM_8994,
+	CODEC_WM_8995,
+	CODEC_MAX
+};
+
+/* sound codec enum */
+enum sound_compat {
+	AUDIO_COMPAT_SPI,
+	AUDIO_COMPAT_I2C,
+};
+
+/* Codec information structure to store the info from device tree */
+struct sound_codec_info {
+	int i2c_bus;
+	int i2c_dev_addr;
+	enum en_sound_codec codec_type;
+};
+
+/*
+ * Initialises audio sub system
+ *
+ * @return	int value 0 for success, -1 for error
+ */
+int sound_init(void);
+
+/*
+ * plays the pcm data buffer in pcm_data.h through i2s1 to make the
+ * sine wave sound
+ *
+ * @return	int 0 for success, -1 for error
+ */
+int sound_play(uint32_t msec, uint32_t frequency);
+
+#endif  /* __SOUND__H__ */