56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2012 Samsung Electronics
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* R. Chandrasekar < rcsekar@samsung.com>
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*/
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#ifndef __SOUND_H__
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#define __SOUND_H__
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/* sound codec enum */
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enum en_sound_codec {
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CODEC_WM_8994,
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CODEC_WM_8995,
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CODEC_MAX_98095,
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CODEC_MAX
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};
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/* sound codec enum */
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enum sound_compat {
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AUDIO_COMPAT_SPI,
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AUDIO_COMPAT_I2C,
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};
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/* Codec information structure to store the info from device tree */
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struct sound_codec_info {
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int i2c_bus;
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int i2c_dev_addr;
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enum en_sound_codec codec_type;
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};
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/*
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* Generates square wave sound data for 1 second
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*
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* @param data data buffer pointer
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* @param size size of the buffer
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* @param freq frequency of the wave
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*/
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void sound_create_square_wave(unsigned short *data, int size, uint32_t freq);
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/*
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* Initialises audio sub system
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* @param blob Pointer of device tree node or NULL if none.
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* @return int value 0 for success, -1 for error
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*/
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int sound_init(const void *blob);
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/*
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* plays the pcm data buffer in pcm_data.h through i2s1 to make the
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* sine wave sound
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*
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* @return int 0 for success, -1 for error
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*/
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int sound_play(uint32_t msec, uint32_t frequency);
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#endif /* __SOUND__H__ */
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