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Diffstat (limited to 'roms/u-boot/include/audio_codec.h')
| -rw-r--r-- | roms/u-boot/include/audio_codec.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/roms/u-boot/include/audio_codec.h b/roms/u-boot/include/audio_codec.h new file mode 100644 index 000000000..2ea4ff096 --- /dev/null +++ b/roms/u-boot/include/audio_codec.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2018 Google LLC + * Written by Simon Glass <sjg@chromium.org> + */ + +#ifndef __AUDIO_CODEC_H__ +#define __AUDIO_CODEC_H__ + +struct udevice; + +/* + * An audio codec turns digital data into sound with various parameters to + * control its operation. + */ + +/* Operations for sound */ +struct audio_codec_ops { + /** + * set_params() - Set audio codec parameters + * + * @dev: Sound device + * @inteface: Interface number to use on codec + * @rate: Sampling rate in Hz + * @mclk_freq: Codec clock frequency in Hz + * @bits_per_sample: Must be 16 or 24 + * @channels: Number of channels to use (1=mono, 2=stereo) + * @return 0 if OK, -ve on error + */ + int (*set_params)(struct udevice *dev, int interface, int rate, + int mclk_freq, int bits_per_sample, uint channels); +}; + +#define audio_codec_get_ops(dev) ((struct audio_codec_ops *)(dev)->driver->ops) + +/** + * audio_codec_set_params() - Set audio codec parameters + * + * @dev: Sound device + * @inteface: Interface number to use on codec + * @rate: Sampling rate in Hz + * @mclk_freq: Codec clock frequency in Hz + * @bits_per_sample: Must be 16 or 24 + * @channels: Number of channels to use (1=mono, 2=stereo) + * @return 0 if OK, -ve on error + */ +int audio_codec_set_params(struct udevice *dev, int interface, int rate, + int mclk_freq, int bits_per_sample, uint channels); + +#endif /* __AUDIO_CODEC_H__ */ |