blob: c4ac3193fe76e50a55c5321727da23c10c3544ed (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2012 Samsung Electronics
* R. Chandrasekar < rcsekar@samsung.com>
*/
#ifndef __SOUND_H__
#define __SOUND_H__
/* 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;
};
/*
* Generates square wave sound data for 1 second
*
* @param sample_rate Sample rate in Hz
* @param data data buffer pointer
* @param size size of the buffer
* @param freq frequency of the wave
*/
void sound_create_square_wave(uint sample_rate, unsigned short *data, int size,
uint 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__ */
|
