1 /* 2 * Copyright (C) 2012 Samsung Electronics 3 * R. Chandrasekar < rcsekar@samsung.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #ifndef __SOUND_H__ 9 #define __SOUND_H__ 10 11 /* sound codec enum */ 12 enum en_sound_codec { 13 CODEC_WM_8994, 14 CODEC_WM_8995, 15 CODEC_MAX_98095, 16 CODEC_MAX 17 }; 18 19 /* sound codec enum */ 20 enum sound_compat { 21 AUDIO_COMPAT_SPI, 22 AUDIO_COMPAT_I2C, 23 }; 24 25 /* Codec information structure to store the info from device tree */ 26 struct sound_codec_info { 27 int i2c_bus; 28 int i2c_dev_addr; 29 enum en_sound_codec codec_type; 30 }; 31 32 /* 33 * Generates square wave sound data for 1 second 34 * 35 * @param data data buffer pointer 36 * @param size size of the buffer 37 * @param freq frequency of the wave 38 */ 39 void sound_create_square_wave(unsigned short *data, int size, uint32_t freq); 40 41 /* 42 * Initialises audio sub system 43 * @param blob Pointer of device tree node or NULL if none. 44 * @return int value 0 for success, -1 for error 45 */ 46 int sound_init(const void *blob); 47 48 /* 49 * plays the pcm data buffer in pcm_data.h through i2s1 to make the 50 * sine wave sound 51 * 52 * @return int 0 for success, -1 for error 53 */ 54 int sound_play(uint32_t msec, uint32_t frequency); 55 56 struct snd_soc_dai_ops { 57 int (*hw_params)(struct udevice *dev, unsigned int samplerate, 58 unsigned int fmt, unsigned int channels); 59 int (*startup)(struct udevice *dev); 60 int (*shutdown)(struct udevice *dev); 61 int (*transfer)(struct udevice *dev, unsigned int *data, 62 unsigned long data_size); 63 int (*set_sysclk)(struct udevice *dev, unsigned int freq); 64 }; 65 66 #endif /* __SOUND__H__ */ 67