/*
   * Copyright (C) 2012 Samsung Electronics
   * R. Chandrasekar < rcsekar@samsung.com>
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #ifndef __SOUND_H__
  #define __SOUND_H__
  
  /* sound codec enum */
  enum en_sound_codec {
  	CODEC_WM_8994,
  	CODEC_WM_8995,
  	CODEC_MAX_98095,
  	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;
  };
  
  /*
   * 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.
   * @return	int value 0 for success, -1 for error
   */
  int sound_init(const void *blob);
  
  /*
   * 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__ */