LXR linux/include/sound/sb16

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 *  Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
   4 *                        Takashi Iwai <tiwai@suse.de>
   5 *
   6 *  SB16ASP/AWE32 CSP control
   7 */
   8#ifndef __SOUND_SB16_CSP_H
   9#define __SOUND_SB16_CSP_H
  10
  11#include <sound/sb.h>
  12#include <sound/hwdep.h>
  13#include <linux/firmware.h>
  14#include <uapi/sound/sb16_csp.h>
  15
  16struct snd_sb_csp;
  17
  18/* indices for the known CSP programs */
  19enum {
  20        CSP_PROGRAM_MULAW,
  21        CSP_PROGRAM_ALAW,
  22        CSP_PROGRAM_ADPCM_INIT,
  23        CSP_PROGRAM_ADPCM_PLAYBACK,
  24        CSP_PROGRAM_ADPCM_CAPTURE,
  25
  26        CSP_PROGRAM_COUNT
  27};
  28
  29/*
  30 * CSP operators
  31 */
  32struct snd_sb_csp_ops {
  33        int (*csp_use) (struct snd_sb_csp * p);
  34        int (*csp_unuse) (struct snd_sb_csp * p);
  35        int (*csp_autoload) (struct snd_sb_csp * p, snd_pcm_format_t pcm_sfmt, int play_rec_mode);
  36        int (*csp_start) (struct snd_sb_csp * p, int sample_width, int channels);
  37        int (*csp_stop) (struct snd_sb_csp * p);
  38        int (*csp_qsound_transfer) (struct snd_sb_csp * p);
  39};
  40
  41/*
  42 * CSP private data
  43 */
  44struct snd_sb_csp {
  45        struct snd_sb *chip;            /* SB16 DSP */
  46        int used;               /* usage flag - exclusive */
  47        char codec_name[16];    /* name of codec */
  48        unsigned short func_nr; /* function number */
  49        unsigned int acc_format;        /* accepted PCM formats */
  50        int acc_channels;       /* accepted channels */
  51        int acc_width;          /* accepted sample width */
  52        int acc_rates;          /* accepted sample rates */
  53        int mode;               /* MODE */
  54        int run_channels;       /* current CSP channels */
  55        int run_width;          /* current sample width */
  56        int version;            /* CSP version (0x10 - 0x1f) */
  57        int running;            /* running state */
  58
  59        struct snd_sb_csp_ops ops;      /* operators */
  60
  61        spinlock_t q_lock;      /* locking */
  62        int q_enabled;          /* enabled flag */
  63        int qpos_left;          /* left position */
  64        int qpos_right;         /* right position */
  65        int qpos_changed;       /* position changed flag */
  66
  67        struct snd_kcontrol *qsound_switch;
  68        struct snd_kcontrol *qsound_space;
  69
  70        struct mutex access_mutex;      /* locking */
  71
  72        const struct firmware *csp_programs[CSP_PROGRAM_COUNT];
  73};
  74
  75int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep);
  76#endif /* __SOUND_SB16_CSP */
  77