include/sound/sb16_csp.h

   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
  16 struct snd_sb_csp;
  17
  18 /* indices for the known CSP programs */
  19 enum {
  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  */
  32 struct 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  */
  44 struct 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
  75 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep);
  76 #endif /* __SOUND_SB16_CSP */