sound.h
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/*
* 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__ */