sound/pci/hda/hda_controller.h

   1 /*
   2  *  Common functionality for the alsa driver code base for HD Audio.
   3  *
   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)
   7  *  any later version.
   8  *
   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
  12  *  more details.
  13  */
  14
  15 #ifndef __SOUND_HDA_CONTROLLER_H
  16 #define __SOUND_HDA_CONTROLLER_H
  17
  18 #include <sound/core.h>
  19 #include <sound/initval.h>
  20 #include "hda_codec.h"
  21 #include "hda_priv.h"
  22
  23 /* PCM setup */
  24 static inline struct azx_dev *get_azx_dev(struct snd_pcm_substream *substream)
  25 {
  26         return substream->runtime->private_data;
  27 }
  28 unsigned int azx_get_position(struct azx *chip,
  29                               struct azx_dev *azx_dev,
  30                               bool with_check);
  31
  32 /* Stream control. */
  33 void azx_stream_stop(struct azx *chip, struct azx_dev *azx_dev);
  34
  35 /* Allocation functions. */
  36 int azx_alloc_stream_pages(struct azx *chip);
  37 void azx_free_stream_pages(struct azx *chip);
  38
  39 /* Low level azx interface */
  40 void azx_init_chip(struct azx *chip, bool full_reset);
  41 void azx_stop_chip(struct azx *chip);
  42 void azx_enter_link_reset(struct azx *chip);
  43 irqreturn_t azx_interrupt(int irq, void *dev_id);
  44
  45 /* Codec interface */
  46 int azx_codec_create(struct azx *chip, const char *model,
  47                      unsigned int max_slots,
  48                      int *power_save_to);
  49 int azx_codec_configure(struct azx *chip);
  50 int azx_mixer_create(struct azx *chip);
  51 int azx_init_stream(struct azx *chip);
  52
  53 #endif /* __SOUND_HDA_CONTROLLER_H */