mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-05 20:54:31 +00:00
2ca471379b
The Intel High-definition Audio is a newer-generation audio system which provides for transfer of a large number of audio stream, each containing up to 16 channels. Add support for HDA as a library which can be used by other drivers. U-Boot currently uses only two channels (stereo). Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Support for Intel High-Definition Audio codec
|
|
*
|
|
* Copyright 2018 Google LLC
|
|
*
|
|
* Taken from coreboot file of the same name
|
|
*/
|
|
|
|
#ifndef __HDA_CODEC_H_
|
|
#define __HDA_CODEC_H_
|
|
|
|
struct hda_regs;
|
|
|
|
/**
|
|
* struct hda_codec_priv - Private data required by the HDA codec
|
|
*
|
|
* @regs: HDA registers
|
|
* @beep_nid: Node ID of beep node (>0)
|
|
*/
|
|
struct hda_codec_priv {
|
|
struct hda_regs *regs;
|
|
uint beep_nid;
|
|
};
|
|
|
|
/**
|
|
* hda_wait_for_ready() - Wait for the codec to indicate it is ready
|
|
*
|
|
* @regs: HDA registers
|
|
* @return 0 if OK -ETIMEDOUT if codec did not respond in time
|
|
*/
|
|
int hda_wait_for_ready(struct hda_regs *regs);
|
|
|
|
/**
|
|
* hda_wait_for_valid() - Wait for the codec to accept the last command
|
|
*
|
|
* @regs: HDA registers
|
|
* @return 0 if OK -ETIMEDOUT if codec did not respond in time
|
|
*/
|
|
int hda_wait_for_valid(struct hda_regs *regs);
|
|
|
|
/**
|
|
* hda_codec_detect() - Detect which codecs are present
|
|
*
|
|
* @regs: HDA registers
|
|
* @return bit mask of active codecs (0 if none)
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int hda_codec_detect(struct hda_regs *regs);
|
|
|
|
/**
|
|
* hda_codecs_init() - Init all codecs
|
|
*
|
|
* @dev: Sound device
|
|
* @regs: HDA registers
|
|
* @codec_mask: Mask of codecs to init (bits 3:0)
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int hda_codecs_init(struct udevice *dev, struct hda_regs *regs, u32 codec_mask);
|
|
|
|
/**
|
|
* hda_codec_start_beep() - Start beeping
|
|
*
|
|
* This tells the sound hardware to start a beep. It will continue until stopped
|
|
* by sound_stop_beep().
|
|
*
|
|
* @dev: Sound device
|
|
* @frequency_hz: Beep frequency in hertz
|
|
* @return if OK, -ve on error
|
|
*/
|
|
int hda_codec_start_beep(struct udevice *dev, int frequency_hz);
|
|
|
|
/**
|
|
* hda_codec_stop_beep() - Stop beeping
|
|
*
|
|
* This tells the sound hardware to stop a previously started beep.
|
|
*
|
|
* @dev: Sound device
|
|
* @return if OK, -ve on error
|
|
*/
|
|
int hda_codec_stop_beep(struct udevice *dev);
|
|
|
|
/**
|
|
* hda_codec_init() - Set up the HDA codec base address
|
|
*
|
|
* This should be called at the start of the probe() method.
|
|
*
|
|
* @dev: Sound device
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int hda_codec_init(struct udevice *dev);
|
|
|
|
/**
|
|
* hda_codec_finish_init() - Finish setting up the HDA codec base address
|
|
*
|
|
* This should be called at the end of the probe() method.
|
|
*
|
|
* @dev: Sound device
|
|
* @return 0 if OK, -ve on error
|
|
*/
|
|
int hda_codec_finish_init(struct udevice *dev);
|
|
|
|
#endif /* __HDA_CODEC_H_ */
|