From 511ed5fdd3892c6e4a42b14c7d80db15eee7fc4f Mon Sep 17 00:00:00 2001 From: Rajeshwari Shinde Date: Thu, 25 Oct 2012 19:49:22 +0000 Subject: SOUND: SAMSUNG: Add I2S driver This patch adds driver for I2S interface specific to samsung. Signed-off-by: R. Chandrasekar Signed-off-by: Rajeshwari Shinde Acked-by: Simon Glass Signed-off-by: Minkyu Kang --- include/sound.h | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 include/sound.h (limited to 'include/sound.h') diff --git a/include/sound.h b/include/sound.h new file mode 100644 index 0000000000..ea0b1158f8 --- /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__ */ -- cgit v1.2.3