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 */
77
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