mirror of https://gitee.com/openkylin/linux.git
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/*
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* Common functionality for the alsa driver code base for HD Audio.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef __SOUND_HDA_CONTROLLER_H
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#define __SOUND_HDA_CONTROLLER_H
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#include <sound/core.h>
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#include <sound/initval.h>
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#include "hda_codec.h"
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#include "hda_priv.h"
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/* PCM setup */
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static inline struct azx_dev *get_azx_dev(struct snd_pcm_substream *substream)
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{
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return substream->runtime->private_data;
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}
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unsigned int azx_get_position(struct azx *chip, struct azx_dev *azx_dev);
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unsigned int azx_get_pos_lpib(struct azx *chip, struct azx_dev *azx_dev);
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unsigned int azx_get_pos_posbuf(struct azx *chip, struct azx_dev *azx_dev);
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/* Stream control. */
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void azx_stream_stop(struct azx *chip, struct azx_dev *azx_dev);
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/* Allocation functions. */
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int azx_alloc_stream_pages(struct azx *chip);
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void azx_free_stream_pages(struct azx *chip);
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/* Low level azx interface */
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void azx_init_chip(struct azx *chip, bool full_reset);
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void azx_stop_chip(struct azx *chip);
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void azx_enter_link_reset(struct azx *chip);
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irqreturn_t azx_interrupt(int irq, void *dev_id);
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/* Codec interface */
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int azx_codec_create(struct azx *chip, const char *model,
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unsigned int max_slots,
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int *power_save_to);
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int azx_codec_configure(struct azx *chip);
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int azx_mixer_create(struct azx *chip);
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int azx_init_stream(struct azx *chip);
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void azx_notifier_register(struct azx *chip);
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void azx_notifier_unregister(struct azx *chip);
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#endif /* __SOUND_HDA_CONTROLLER_H */
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