1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * Copyright 2018 Google LLC
4 * Written by Simon Glass <sjg@chromium.org>
5 */
6
7#ifndef __AUDIO_CODEC_H__
8#define __AUDIO_CODEC_H__
9
10struct udevice;
11
12/*
13 * An audio codec turns digital data into sound with various parameters to
14 * control its operation.
15 */
16
17/* Operations for sound */
18struct audio_codec_ops {
19	/**
20	 * set_params() - Set audio codec parameters
21	 *
22	 * @dev: Sound device
23	 * @inteface: Interface number to use on codec
24	 * @rate: Sampling rate in Hz
25	 * @mclk_freq: Codec clock frequency in Hz
26	 * @bits_per_sample: Must be 16 or 24
27	 * @channels: Number of channels to use (1=mono, 2=stereo)
28	 * @return 0 if OK, -ve on error
29	 */
30	int (*set_params)(struct udevice *dev, int interface, int rate,
31			  int mclk_freq, int bits_per_sample, uint channels);
32};
33
34#define audio_codec_get_ops(dev) ((struct audio_codec_ops *)(dev)->driver->ops)
35
36/**
37 * audio_codec_set_params() - Set audio codec parameters
38 *
39 * @dev: Sound device
40 * @inteface: Interface number to use on codec
41 * @rate: Sampling rate in Hz
42 * @mclk_freq: Codec clock frequency in Hz
43 * @bits_per_sample: Must be 16 or 24
44 * @channels: Number of channels to use (1=mono, 2=stereo)
45 * Return: 0 if OK, -ve on error
46 */
47int audio_codec_set_params(struct udevice *dev, int interface, int rate,
48			   int mclk_freq, int bits_per_sample, uint channels);
49
50#endif  /* __AUDIO_CODEC_H__ */
51