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u-boot/include/audio_codec.h

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dm: sound: Create a uclass for audio codecs An audio codec provides a way to convert digital data to sound and vice versa. Add a simple uclass which just supports setting the parameters for the codec. Signed-off-by: Simon Glass <sjg@chromium.org>
2018-12-11 01:37:33 +08:00
/* 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__
common: Drop asm/global_data.h from common header Move this out of the common header and include it only where needed. In a number of cases this requires adding "struct udevice;" to avoid adding another large header or in other cases replacing / adding missing header files that had been pulled in, very indirectly. Finally, we have a few cases where we did not need to include <asm/global_data.h> at all, so remove that include. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com>
2020-10-31 11:38:53 +08:00
struct udevice;
dm: sound: Create a uclass for audio codecs An audio codec provides a way to convert digital data to sound and vice versa. Add a simple uclass which just supports setting the parameters for the codec. Signed-off-by: Simon Glass <sjg@chromium.org>
2018-12-11 01:37:33 +08:00
/*
* 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)
doc: replace @return by Return: Sphinx expects Return: and not @return to indicate a return value. find . -name '*.c' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; find . -name '*.h' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2022-01-20 01:05:50 +08:00
* Return: 0 if OK, -ve on error
dm: sound: Create a uclass for audio codecs An audio codec provides a way to convert digital data to sound and vice versa. Add a simple uclass which just supports setting the parameters for the codec. Signed-off-by: Simon Glass <sjg@chromium.org>
2018-12-11 01:37:33 +08:00
*/
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__ */
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