mirror of https://gitee.com/openkylin/linux.git
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
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/*
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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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int azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec,
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struct hda_pcm *cpcm);
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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,
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struct azx_dev *azx_dev,
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bool with_check);
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/* Stream control. */
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void azx_stream_start(struct azx *chip, struct azx_dev *azx_dev);
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void azx_stream_stop(struct azx *chip, struct azx_dev *azx_dev);
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void azx_stream_reset(struct azx *chip, struct azx_dev *azx_dev);
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int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev);
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int setup_bdle(struct azx *chip,
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struct snd_dma_buffer *dmab,
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struct azx_dev *azx_dev, u32 **bdlp,
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int ofs, int size, int with_ioc);
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/* DSP lock helpers */
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#ifdef CONFIG_SND_HDA_DSP_LOADER
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#define dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex)
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#define dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex)
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#define dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex)
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#define dsp_is_locked(dev) ((dev)->locked)
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#else
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#define dsp_lock_init(dev) do {} while (0)
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#define dsp_lock(dev) do {} while (0)
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#define dsp_unlock(dev) do {} while (0)
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#define dsp_is_locked(dev) 0
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#endif
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#endif /* __SOUND_HDA_CONTROLLER_H */
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