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b6050ef664
... and move most parts into hda_intel.c from the generic controller code. This is a clean up, and there should be no functional change by this patch. Now, struct azx obtains the generic callbacks for getting the position and the delay. As default NULL, posbuf is read. These replace the old position_fix[], and each is implemented as a callback. Signed-off-by: Takashi Iwai <tiwai@suse.de>
53 lines
1.8 KiB
C
53 lines
1.8 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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#endif /* __SOUND_HDA_CONTROLLER_H */
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