LXR uboot/include/audio

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