2 * Common functionality for the alsa driver code base for HD Audio.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the Free
6 * Software Foundation; either version 2 of the License, or (at your option)
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 #ifndef __SOUND_HDA_CONTROLLER_H
16 #define __SOUND_HDA_CONTROLLER_H
18 #include <sound/core.h>
19 #include <sound/initval.h>
20 #include "hda_codec.h"
24 int azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec,
25 struct hda_pcm *cpcm);
26 static inline struct azx_dev *get_azx_dev(struct snd_pcm_substream *substream)
28 return substream->runtime->private_data;
30 unsigned int azx_get_position(struct azx *chip,
31 struct azx_dev *azx_dev,
35 void azx_stream_stop(struct azx *chip, struct azx_dev *azx_dev);
37 #ifdef CONFIG_SND_HDA_DSP_LOADER
38 int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format,
39 unsigned int byte_size,
40 struct snd_dma_buffer *bufp);
41 void azx_load_dsp_trigger(struct hda_bus *bus, bool start);
42 void azx_load_dsp_cleanup(struct hda_bus *bus,
43 struct snd_dma_buffer *dmab);
46 /* Allocation functions. */
47 int azx_alloc_stream_pages(struct azx *chip);
48 void azx_free_stream_pages(struct azx *chip);
51 * CORB / RIRB interface
53 void azx_update_rirb(struct azx *chip);
54 int azx_send_cmd(struct hda_bus *bus, unsigned int val);
55 unsigned int azx_get_response(struct hda_bus *bus,
58 /* Low level azx interface */
59 void azx_init_chip(struct azx *chip, int full_reset);
60 void azx_stop_chip(struct azx *chip);
61 void azx_enter_link_reset(struct azx *chip);
63 #endif /* __SOUND_HDA_CONTROLLER_H */