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- /* 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_ */
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