mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-29 08:01:08 +00:00
7d92b06090
At present this value is hard-coded in the function that generates a square wave. Since sample rates vary between different hardware, it makes more sense to have this as a parameter. Update the function and its users. Signed-off-by: Simon Glass <sjg@chromium.org>
57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
/* 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 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 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__ */
|