include/sound.h

   1 /*
   2  * Copyright (C) 2012 Samsung Electronics
   3  * R. Chandrasekar < rcsekar@samsung.com>
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #ifndef __SOUND_H__
  25 #define __SOUND_H__
  26
  27 /* sound codec enum */
  28 enum en_sound_codec {
  29         CODEC_WM_8994,
  30         CODEC_WM_8995,
  31         CODEC_MAX
  32 };
  33
  34 /* sound codec enum */
  35 enum sound_compat {
  36         AUDIO_COMPAT_SPI,
  37         AUDIO_COMPAT_I2C,
  38 };
  39
  40 /* Codec information structure to store the info from device tree */
  41 struct sound_codec_info {
  42         int i2c_bus;
  43         int i2c_dev_addr;
  44         enum en_sound_codec codec_type;
  45 };
  46
  47 /*
  48  * Initialises audio sub system
  49  * @param blob  Pointer of device tree node or NULL if none.
  50  * @return      int value 0 for success, -1 for error
  51  */
  52 int sound_init(const void *blob);
  53
  54 /*
  55  * plays the pcm data buffer in pcm_data.h through i2s1 to make the
  56  * sine wave sound
  57  *
  58  * @return      int 0 for success, -1 for error
  59  */
  60 int sound_play(uint32_t msec, uint32_t frequency);
  61
  62 #endif  /* __SOUND__H__ */