xref: /linux/include/sound/sb16_csp.h (revision 75bf465f0bc33e9b776a46d6a1b9b990f5fb7c37)
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