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