include/sound.h

   1 /*
   2  * Copyright (C) 2012 Samsung Electronics
   3  * R. Chandrasekar < rcsekar@samsung.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #ifndef __SOUND_H__
   9 #define __SOUND_H__
  10
  11 /* sound codec enum */
  12 enum en_sound_codec {
  13         CODEC_WM_8994,
  14         CODEC_WM_8995,
  15         CODEC_MAX_98095,
  16         CODEC_MAX
  17 };
  18
  19 /* sound codec enum */
  20 enum sound_compat {
  21         AUDIO_COMPAT_SPI,
  22         AUDIO_COMPAT_I2C,
  23 };
  24
  25 /* Codec information structure to store the info from device tree */
  26 struct sound_codec_info {
  27         int i2c_bus;
  28         int i2c_dev_addr;
  29         enum en_sound_codec codec_type;
  30 };
  31
  32 /*
  33  * Initialises audio sub system
  34  * @param blob  Pointer of device tree node or NULL if none.
  35  * @return      int value 0 for success, -1 for error
  36  */
  37 int sound_init(const void *blob);
  38
  39 /*
  40  * plays the pcm data buffer in pcm_data.h through i2s1 to make the
  41  * sine wave sound
  42  *
  43  * @return      int 0 for success, -1 for error
  44  */
  45 int sound_play(uint32_t msec, uint32_t frequency);
  46
  47 #endif  /* __SOUND__H__ */