GNU Linux-libre 6.9.2-gnu
[releases.git] / 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 */