1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright (C) 2012 Samsung Electronics
10 /* sound codec enum */
16 /* Codec information structure to store the info from device tree */
17 struct sound_codec_info {
23 * struct sound_uc_priv - private uclass information about each sound device
25 * This is used to line the codec and i2s together
27 * @codec: Codec that is used for this sound device
28 * @i2s: I2S bus that is used for this sound device
29 * @setup_done: true if setup() has been called
31 struct sound_uc_priv {
32 struct udevice *codec;
38 * Generates square wave sound data for 1 second
40 * @param sample_rate Sample rate in Hz
41 * @param data data buffer pointer
42 * @param size size of the buffer in bytes
43 * @param freq frequency of the wave
45 void sound_create_square_wave(uint sample_rate, unsigned short *data, int size,
49 * Initialises audio sub system
50 * @param blob Pointer of device tree node or NULL if none.
51 * @return int value 0 for success, -1 for error
53 int sound_init(const void *blob);
55 #ifdef CONFIG_DM_SOUND
57 * The sound uclass brings together a data transport (currently only I2C) and a
58 * codec (currently connected over I2C).
61 /* Operations for sound */
64 * setup() - Set up to play a sound
66 int (*setup)(struct udevice *dev);
69 * play() - Play a beep
72 * @data: Data buffer to play
73 * @data_size: Size of data buffer in bytes
74 * @return 0 if OK, -ve on error
76 int (*play)(struct udevice *dev, void *data, uint data_size);
79 #define sound_get_ops(dev) ((struct sound_ops *)(dev)->driver->ops)
82 * setup() - Set up to play a sound
84 int sound_setup(struct udevice *dev);
87 * play() - Play a beep
90 * @msecs: Duration of beep in milliseconds
91 * @frequency_hz: Frequency of the beep in Hertz
92 * @return 0 if OK, -ve on error
94 int sound_beep(struct udevice *dev, int msecs, int frequency_hz);
97 * sound_find_codec_i2s() - Called by sound drivers to locate codec and i2s
99 * This finds the audio codec and i2s devices and puts them in the uclass's
100 * private data for this device.
102 int sound_find_codec_i2s(struct udevice *dev);
106 * plays the pcm data buffer in pcm_data.h through i2s1 to make the
109 * @return int 0 for success, -1 for error
111 int sound_play(uint32_t msec, uint32_t frequency);
112 #endif /* CONFIG_DM_SOUND */
114 #endif /* __SOUND__H__ */