1 /*
2  *  Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
3  *                        Takashi Iwai <tiwai@suse.de>
4  *
5  *  SB16ASP/AWE32 CSP control
6  *
7  *   This program is free software; you can redistribute it and/or modify
8  *   it under the terms of the GNU General Public License as published by
9  *   the Free Software Foundation; either version 2 of the License, or
10  *   (at your option) any later version.
11  *
12  *   This program is distributed in the hope that it will be useful,
13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *   GNU General Public License for more details.
16  *
17  *   You should have received a copy of the GNU General Public License
18  *   along with this program; if not, write to the Free Software
19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  *
21  */
22 #ifndef __SOUND_SB16_CSP_H
23 #define __SOUND_SB16_CSP_H
24 
25 #include <sound/sb.h>
26 #include <sound/hwdep.h>
27 #include <linux/firmware.h>
28 #include <uapi/sound/sb16_csp.h>
29 
30 struct snd_sb_csp;
31 
32 /* indices for the known CSP programs */
33 enum {
34 	CSP_PROGRAM_MULAW,
35 	CSP_PROGRAM_ALAW,
36 	CSP_PROGRAM_ADPCM_INIT,
37 	CSP_PROGRAM_ADPCM_PLAYBACK,
38 	CSP_PROGRAM_ADPCM_CAPTURE,
39 
40 	CSP_PROGRAM_COUNT
41 };
42 
43 /*
44  * CSP operators
45  */
46 struct snd_sb_csp_ops {
47 	int (*csp_use) (struct snd_sb_csp * p);
48 	int (*csp_unuse) (struct snd_sb_csp * p);
49 	int (*csp_autoload) (struct snd_sb_csp * p, snd_pcm_format_t pcm_sfmt, int play_rec_mode);
50 	int (*csp_start) (struct snd_sb_csp * p, int sample_width, int channels);
51 	int (*csp_stop) (struct snd_sb_csp * p);
52 	int (*csp_qsound_transfer) (struct snd_sb_csp * p);
53 };
54 
55 /*
56  * CSP private data
57  */
58 struct snd_sb_csp {
59 	struct snd_sb *chip;		/* SB16 DSP */
60 	int used;		/* usage flag - exclusive */
61 	char codec_name[16];	/* name of codec */
62 	unsigned short func_nr;	/* function number */
63 	unsigned int acc_format;	/* accepted PCM formats */
64 	int acc_channels;	/* accepted channels */
65 	int acc_width;		/* accepted sample width */
66 	int acc_rates;		/* accepted sample rates */
67 	int mode;		/* MODE */
68 	int run_channels;	/* current CSP channels */
69 	int run_width;		/* current sample width */
70 	int version;		/* CSP version (0x10 - 0x1f) */
71 	int running;		/* running state */
72 
73 	struct snd_sb_csp_ops ops;	/* operators */
74 
75 	spinlock_t q_lock;	/* locking */
76 	int q_enabled;		/* enabled flag */
77 	int qpos_left;		/* left position */
78 	int qpos_right;		/* right position */
79 	int qpos_changed;	/* position changed flag */
80 
81 	struct snd_kcontrol *qsound_switch;
82 	struct snd_kcontrol *qsound_space;
83 
84 	struct mutex access_mutex;	/* locking */
85 
86 	const struct firmware *csp_programs[CSP_PROGRAM_COUNT];
87 };
88 
89 int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep);
90 #endif /* __SOUND_SB16_CSP */
91