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