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