linux/include/sound/sb16_csp.h
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   1#ifndef __SOUND_SB16_CSP_H
   2#define __SOUND_SB16_CSP_H
   3
   4/*
   5 *  Copyright (c) 1999 by Uros Bizjak <uros@kss-loka.si>
   6 *                        Takashi Iwai <tiwai@suse.de>
   7 *
   8 *  SB16ASP/AWE32 CSP control
   9 *
  10 *   This program is free software; you can redistribute it and/or modify 
  11 *   it under the terms of the GNU General Public License as published by
  12 *   the Free Software Foundation; either version 2 of the License, or
  13 *   (at your option) any later version.
  14 *
  15 *   This program is distributed in the hope that it will be useful,
  16 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 *   GNU General Public License for more details.
  19 *
  20 *   You should have received a copy of the GNU General Public License
  21 *   along with this program; if not, write to the Free Software
  22 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23 *
  24 */
  25
  26/* CSP modes */
  27#define SNDRV_SB_CSP_MODE_NONE          0x00
  28#define SNDRV_SB_CSP_MODE_DSP_READ      0x01    /* Record from DSP */
  29#define SNDRV_SB_CSP_MODE_DSP_WRITE     0x02    /* Play to DSP */
  30#define SNDRV_SB_CSP_MODE_QSOUND                0x04    /* QSound */
  31
  32/* CSP load flags */
  33#define SNDRV_SB_CSP_LOAD_FROMUSER      0x01
  34#define SNDRV_SB_CSP_LOAD_INITBLOCK     0x02
  35
  36/* CSP sample width */
  37#define SNDRV_SB_CSP_SAMPLE_8BIT                0x01
  38#define SNDRV_SB_CSP_SAMPLE_16BIT               0x02
  39
  40/* CSP channels */
  41#define SNDRV_SB_CSP_MONO                       0x01
  42#define SNDRV_SB_CSP_STEREO             0x02
  43
  44/* CSP rates */
  45#define SNDRV_SB_CSP_RATE_8000          0x01
  46#define SNDRV_SB_CSP_RATE_11025         0x02
  47#define SNDRV_SB_CSP_RATE_22050         0x04
  48#define SNDRV_SB_CSP_RATE_44100         0x08
  49#define SNDRV_SB_CSP_RATE_ALL           0x0f
  50
  51/* CSP running state */
  52#define SNDRV_SB_CSP_ST_IDLE            0x00
  53#define SNDRV_SB_CSP_ST_LOADED          0x01
  54#define SNDRV_SB_CSP_ST_RUNNING         0x02
  55#define SNDRV_SB_CSP_ST_PAUSED          0x04
  56#define SNDRV_SB_CSP_ST_AUTO            0x08
  57#define SNDRV_SB_CSP_ST_QSOUND          0x10
  58
  59/* maximum QSound value (180 degrees right) */
  60#define SNDRV_SB_CSP_QSOUND_MAX_RIGHT   0x20
  61
  62/* maximum microcode RIFF file size */
  63#define SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE    0x3000
  64
  65/* microcode header */
  66struct snd_sb_csp_mc_header {
  67        char codec_name[16];            /* id name of codec */
  68        unsigned short func_req;        /* requested function */
  69};
  70
  71/* microcode to be loaded */
  72struct snd_sb_csp_microcode {
  73        struct snd_sb_csp_mc_header info;
  74        unsigned char data[SNDRV_SB_CSP_MAX_MICROCODE_FILE_SIZE];
  75};
  76
  77/* start CSP with sample_width in mono/stereo */
  78struct snd_sb_csp_start {
  79        int sample_width;       /* sample width, look above */
  80        int channels;           /* channels, look above */
  81};
  82
  83/* CSP information */
  84struct snd_sb_csp_info {
  85        char codec_name[16];            /* id name of codec */
  86        unsigned short func_nr;         /* function number */
  87        unsigned int acc_format;        /* accepted PCM formats */
  88        unsigned short acc_channels;    /* accepted channels */
  89        unsigned short acc_width;       /* accepted sample width */
  90        unsigned short acc_rates;       /* accepted sample rates */
  91        unsigned short csp_mode;        /* CSP mode, see above */
  92        unsigned short run_channels;    /* current channels  */
  93        unsigned short run_width;       /* current sample width */
  94        unsigned short version;         /* version id: 0x10 - 0x1f */
  95        unsigned short state;           /* state bits */
  96};
  97
  98/* HWDEP controls */
  99/* get CSP information */
 100#define SNDRV_SB_CSP_IOCTL_INFO         _IOR('H', 0x10, struct snd_sb_csp_info)
 101/* load microcode to CSP */
 102/* NOTE: struct snd_sb_csp_microcode overflows the max size (13 bits)
 103 * defined for some architectures like MIPS, and it leads to build errors.
 104 * (x86 and co have 14-bit size, thus it's valid, though.)
 105 * As a workaround for skipping the size-limit check, here we don't use the
 106 * normal _IOW() macro but _IOC() with the manual argument.
 107 */
 108#define SNDRV_SB_CSP_IOCTL_LOAD_CODE    \
 109        _IOC(_IOC_WRITE, 'H', 0x11, sizeof(struct snd_sb_csp_microcode))
 110/* unload microcode from CSP */
 111#define SNDRV_SB_CSP_IOCTL_UNLOAD_CODE  _IO('H', 0x12)
 112/* start CSP */
 113#define SNDRV_SB_CSP_IOCTL_START                _IOW('H', 0x13, struct snd_sb_csp_start)
 114/* stop CSP */
 115#define SNDRV_SB_CSP_IOCTL_STOP         _IO('H', 0x14)
 116/* pause CSP and DMA transfer */
 117#define SNDRV_SB_CSP_IOCTL_PAUSE                _IO('H', 0x15)
 118/* restart CSP and DMA transfer */
 119#define SNDRV_SB_CSP_IOCTL_RESTART      _IO('H', 0x16)
 120
 121#ifdef __KERNEL__
 122#include "sb.h"
 123#include "hwdep.h"
 124#include <linux/firmware.h>
 125
 126struct snd_sb_csp;
 127
 128/* indices for the known CSP programs */
 129enum {
 130        CSP_PROGRAM_MULAW,
 131        CSP_PROGRAM_ALAW,
 132        CSP_PROGRAM_ADPCM_INIT,
 133        CSP_PROGRAM_ADPCM_PLAYBACK,
 134        CSP_PROGRAM_ADPCM_CAPTURE,
 135
 136        CSP_PROGRAM_COUNT
 137};
 138
 139/*
 140 * CSP operators
 141 */
 142struct snd_sb_csp_ops {
 143        int (*csp_use) (struct snd_sb_csp * p);
 144        int (*csp_unuse) (struct snd_sb_csp * p);
 145        int (*csp_autoload) (struct snd_sb_csp * p, int pcm_sfmt, int play_rec_mode);
 146        int (*csp_start) (struct snd_sb_csp * p, int sample_width, int channels);
 147        int (*csp_stop) (struct snd_sb_csp * p);
 148        int (*csp_qsound_transfer) (struct snd_sb_csp * p);
 149};
 150
 151/*
 152 * CSP private data
 153 */
 154struct snd_sb_csp {
 155        struct snd_sb *chip;            /* SB16 DSP */
 156        int used;               /* usage flag - exclusive */
 157        char codec_name[16];    /* name of codec */
 158        unsigned short func_nr; /* function number */
 159        unsigned int acc_format;        /* accepted PCM formats */
 160        int acc_channels;       /* accepted channels */
 161        int acc_width;          /* accepted sample width */
 162        int acc_rates;          /* accepted sample rates */
 163        int mode;               /* MODE */
 164        int run_channels;       /* current CSP channels */
 165        int run_width;          /* current sample width */
 166        int version;            /* CSP version (0x10 - 0x1f) */
 167        int running;            /* running state */
 168
 169        struct snd_sb_csp_ops ops;      /* operators */
 170
 171        spinlock_t q_lock;      /* locking */
 172        int q_enabled;          /* enabled flag */
 173        int qpos_left;          /* left position */
 174        int qpos_right;         /* right position */
 175        int qpos_changed;       /* position changed flag */
 176
 177        struct snd_kcontrol *qsound_switch;
 178        struct snd_kcontrol *qsound_space;
 179
 180        struct mutex access_mutex;      /* locking */
 181
 182        const struct firmware *csp_programs[CSP_PROGRAM_COUNT];
 183};
 184
 185int snd_sb_csp_new(struct snd_sb *chip, int device, struct snd_hwdep ** rhwdep);
 186#endif
 187
 188#endif /* __SOUND_SB16_CSP */
 189
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