projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| ce6d99a0 SG |
1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
| 2 | /* | |
| 3 | * Copyright 2018 Google LLC | |
| 4 | * Written by Simon Glass <[email protected]> | |
| 5 | */ | |
| 6 | ||
| 7 | #ifndef __AUDIO_CODEC_H__ | |
| 8 | #define __AUDIO_CODEC_H__ | |
| 9 | ||
| 401d1c4f SG |
10 | struct udevice; |
| 11 | ||
| ce6d99a0 SG |
12 | /* |
| 13 | * An audio codec turns digital data into sound with various parameters to | |
| 14 | * control its operation. | |
| 15 | */ | |
| 16 | ||
| 17 | /* Operations for sound */ | |
| 18 | struct 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 | */ | |
| 47 | int 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__ */ |