include/sound/opl3.h

   1 #ifndef __SOUND_OPL3_H
   2 #define __SOUND_OPL3_H
   3
   4 /*
   5  * Definitions of the OPL-3 registers.
   6  *
   7  * Copyright (c) by Jaroslav Kysela <perex@suse.cz>,
   8  *                  Hannu Savolainen 1993-1996
   9  *
  10  *
  11  *      The OPL-3 mode is switched on by writing 0x01, to the offset 5
  12  *      of the right side.
  13  *
  14  *      Another special register at the right side is at offset 4. It contains
  15  *      a bit mask defining which voices are used as 4 OP voices.
  16  *
  17  *      The percussive mode is implemented in the left side only.
  18  *
  19  *      With the above exceptions the both sides can be operated independently.
  20  *
  21  *      A 4 OP voice can be created by setting the corresponding
  22  *      bit at offset 4 of the right side.
  23  *
  24  *      For example setting the rightmost bit (0x01) changes the
  25  *      first voice on the right side to the 4 OP mode. The fourth
  26  *      voice is made inaccessible.
  27  *
  28  *      If a voice is set to the 2 OP mode, it works like 2 OP modes
  29  *      of the original YM3812 (AdLib). In addition the voice can
  30  *      be connected the left, right or both stereo channels. It can
  31  *      even be left unconnected. This works with 4 OP voices also.
  32  *
  33  *      The stereo connection bits are located in the FEEDBACK_CONNECTION
  34  *      register of the voice (0xC0-0xC8). In 4 OP voices these bits are
  35  *      in the second half of the voice.
  36  *
  37  *
  38  *   This program is free software; you can redistribute it and/or modify
  39  *   it under the terms of the GNU General Public License as published by
  40  *   the Free Software Foundation; either version 2 of the License, or
  41  *   (at your option) any later version.
  42  *
  43  *   This program is distributed in the hope that it will be useful,
  44  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  45  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  46  *   GNU General Public License for more details.
  47  *
  48  *   You should have received a copy of the GNU General Public License
  49  *   along with this program; if not, write to the Free Software
  50  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  51  *
  52  */
  53
  54 #include "driver.h"
  55 #include <linux/time.h>
  56 #include <linux/mutex.h>
  57 #include "core.h"
  58 #include "hwdep.h"
  59 #include "timer.h"
  60 #include "seq_midi_emul.h"
  61 #ifdef CONFIG_SND_SEQUENCER_OSS
  62 #include "seq_oss.h"
  63 #include "seq_oss_legacy.h"
  64 #endif
  65 #include "seq_device.h"
  66 #include "ainstr_fm.h"
  67
  68 /*
  69  *    Register numbers for the global registers
  70  */
  71
  72 #define OPL3_REG_TEST                   0x01
  73 #define   OPL3_ENABLE_WAVE_SELECT       0x20
  74
  75 #define OPL3_REG_TIMER1                 0x02
  76 #define OPL3_REG_TIMER2                 0x03
  77 #define OPL3_REG_TIMER_CONTROL          0x04    /* Left side */
  78 #define   OPL3_IRQ_RESET                0x80
  79 #define   OPL3_TIMER1_MASK              0x40
  80 #define   OPL3_TIMER2_MASK              0x20
  81 #define   OPL3_TIMER1_START             0x01
  82 #define   OPL3_TIMER2_START             0x02
  83
  84 #define OPL3_REG_CONNECTION_SELECT      0x04    /* Right side */
  85 #define   OPL3_LEFT_4OP_0               0x01
  86 #define   OPL3_LEFT_4OP_1               0x02
  87 #define   OPL3_LEFT_4OP_2               0x04
  88 #define   OPL3_RIGHT_4OP_0              0x08
  89 #define   OPL3_RIGHT_4OP_1              0x10
  90 #define   OPL3_RIGHT_4OP_2              0x20
  91
  92 #define OPL3_REG_MODE                   0x05    /* Right side */
  93 #define   OPL3_OPL3_ENABLE              0x01    /* OPL3 mode */
  94 #define   OPL3_OPL4_ENABLE              0x02    /* OPL4 mode */
  95
  96 #define OPL3_REG_KBD_SPLIT              0x08    /* Left side */
  97 #define   OPL3_COMPOSITE_SINE_WAVE_MODE 0x80    /* Don't use with OPL-3? */
  98 #define   OPL3_KEYBOARD_SPLIT           0x40
  99
 100 #define OPL3_REG_PERCUSSION             0xbd    /* Left side only */
 101 #define   OPL3_TREMOLO_DEPTH            0x80
 102 #define   OPL3_VIBRATO_DEPTH            0x40
 103 #define   OPL3_PERCUSSION_ENABLE        0x20
 104 #define   OPL3_BASSDRUM_ON              0x10
 105 #define   OPL3_SNAREDRUM_ON             0x08
 106 #define   OPL3_TOMTOM_ON                0x04
 107 #define   OPL3_CYMBAL_ON                0x02
 108 #define   OPL3_HIHAT_ON                 0x01
 109
 110 /*
 111  *    Offsets to the register banks for operators. To get the
 112  *      register number just add the operator offset to the bank offset
 113  *
 114  *      AM/VIB/EG/KSR/Multiple (0x20 to 0x35)
 115  */
 116 #define OPL3_REG_AM_VIB                 0x20
 117 #define   OPL3_TREMOLO_ON               0x80
 118 #define   OPL3_VIBRATO_ON               0x40
 119 #define   OPL3_SUSTAIN_ON               0x20
 120 #define   OPL3_KSR                      0x10    /* Key scaling rate */
 121 #define   OPL3_MULTIPLE_MASK            0x0f    /* Frequency multiplier */
 122
 123  /*
 124   *   KSL/Total level (0x40 to 0x55)
 125   */
 126 #define OPL3_REG_KSL_LEVEL              0x40
 127 #define   OPL3_KSL_MASK                 0xc0    /* Envelope scaling bits */
 128 #define   OPL3_TOTAL_LEVEL_MASK         0x3f    /* Strength (volume) of OP */
 129
 130 /*
 131  *    Attack / Decay rate (0x60 to 0x75)
 132  */
 133 #define OPL3_REG_ATTACK_DECAY           0x60
 134 #define   OPL3_ATTACK_MASK              0xf0
 135 #define   OPL3_DECAY_MASK               0x0f
 136
 137 /*
 138  * Sustain level / Release rate (0x80 to 0x95)
 139  */
 140 #define OPL3_REG_SUSTAIN_RELEASE        0x80
 141 #define   OPL3_SUSTAIN_MASK             0xf0
 142 #define   OPL3_RELEASE_MASK             0x0f
 143
 144 /*
 145  * Wave select (0xE0 to 0xF5)
 146  */
 147 #define OPL3_REG_WAVE_SELECT            0xe0
 148 #define   OPL3_WAVE_SELECT_MASK         0x07
 149
 150 /*
 151  *    Offsets to the register banks for voices. Just add to the
 152  *      voice number to get the register number.
 153  *
 154  *      F-Number low bits (0xA0 to 0xA8).
 155  */
 156 #define OPL3_REG_FNUM_LOW               0xa0
 157
 158 /*
 159  *    F-number high bits / Key on / Block (octave) (0xB0 to 0xB8)
 160  */
 161 #define OPL3_REG_KEYON_BLOCK            0xb0
 162 #define   OPL3_KEYON_BIT                0x20
 163 #define   OPL3_BLOCKNUM_MASK            0x1c
 164 #define   OPL3_FNUM_HIGH_MASK           0x03
 165
 166 /*
 167  *    Feedback / Connection (0xc0 to 0xc8)
 168  *
 169  *      These registers have two new bits when the OPL-3 mode
 170  *      is selected. These bits controls connecting the voice
 171  *      to the stereo channels. For 4 OP voices this bit is
 172  *      defined in the second half of the voice (add 3 to the
 173  *      register offset).
 174  *
 175  *      For 4 OP voices the connection bit is used in the
 176  *      both halves (gives 4 ways to connect the operators).
 177  */
 178 #define OPL3_REG_FEEDBACK_CONNECTION    0xc0
 179 #define   OPL3_FEEDBACK_MASK            0x0e    /* Valid just for 1st OP of a voice */
 180 #define   OPL3_CONNECTION_BIT           0x01
 181 /*
 182  *    In the 4 OP mode there is four possible configurations how the
 183  *      operators can be connected together (in 2 OP modes there is just
 184  *      AM or FM). The 4 OP connection mode is defined by the rightmost
 185  *      bit of the FEEDBACK_CONNECTION (0xC0-0xC8) on the both halves.
 186  *
 187  *      First half      Second half     Mode
 188  *
 189  *                                       +---+
 190  *                                       v   |
 191  *      0               0               >+-1-+--2--3--4-->
 192  *
 193  *
 194  *
 195  *                                       +---+
 196  *                                       |   |
 197  *      0               1               >+-1-+--2-+
 198  *                                                |->
 199  *                                      >--3----4-+
 200  *
 201  *                                       +---+
 202  *                                       |   |
 203  *      1               0               >+-1-+-----+
 204  *                                                 |->
 205  *                                      >--2--3--4-+
 206  *
 207  *                                       +---+
 208  *                                       |   |
 209  *      1               1               >+-1-+--+
 210  *                                              |
 211  *                                      >--2--3-+->
 212  *                                              |
 213  *                                      >--4----+
 214  */
 215 #define   OPL3_STEREO_BITS              0x30    /* OPL-3 only */
 216 #define     OPL3_VOICE_TO_LEFT          0x10
 217 #define     OPL3_VOICE_TO_RIGHT         0x20
 218
 219 /*
 220
 221  */
 222
 223 #define OPL3_LEFT               0x0000
 224 #define OPL3_RIGHT              0x0100
 225
 226 #define OPL3_HW_AUTO            0x0000
 227 #define OPL3_HW_OPL2            0x0200
 228 #define OPL3_HW_OPL3            0x0300
 229 #define OPL3_HW_OPL3_SV         0x0301  /* S3 SonicVibes */
 230 #define OPL3_HW_OPL3_CS         0x0302  /* CS4232/CS4236+ */
 231 #define OPL3_HW_OPL3_FM801      0x0303  /* FM801 */
 232 #define OPL3_HW_OPL3_CS4281     0x0304  /* CS4281 */
 233 #define OPL3_HW_OPL4            0x0400  /* YMF278B/YMF295 */
 234 #define OPL3_HW_OPL4_ML         0x0401  /* YMF704/YMF721 */
 235 #define OPL3_HW_MASK            0xff00
 236
 237 #define MAX_OPL2_VOICES         9
 238 #define MAX_OPL3_VOICES         18
 239
 240 struct snd_opl3;
 241
 242 /*
 243  * A structure to keep track of each hardware voice
 244  */
 245 struct snd_opl3_voice {
 246         int  state;             /* status */
 247 #define SNDRV_OPL3_ST_OFF               0       /* Not playing */
 248 #define SNDRV_OPL3_ST_ON_2OP    1       /* 2op voice is allocated */
 249 #define SNDRV_OPL3_ST_ON_4OP    2       /* 4op voice is allocated */
 250 #define SNDRV_OPL3_ST_NOT_AVAIL -1      /* voice is not available */
 251
 252         unsigned int time;      /* An allocation time */
 253         unsigned char note;     /* Note currently assigned to this voice */
 254
 255         unsigned long note_off; /* note-off time */
 256         int note_off_check;     /* check note-off time */
 257
 258         unsigned char keyon_reg;        /* KON register shadow */
 259
 260         struct snd_midi_channel *chan;  /* Midi channel for this note */
 261 };
 262
 263 struct snd_opl3 {
 264         unsigned long l_port;
 265         unsigned long r_port;
 266         struct resource *res_l_port;
 267         struct resource *res_r_port;
 268         unsigned short hardware;
 269         /* hardware access */
 270         void (*command) (struct snd_opl3 * opl3, unsigned short cmd, unsigned char val);
 271         unsigned short timer_enable;
 272         int seq_dev_num;        /* sequencer device number */
 273         struct snd_timer *timer1;
 274         struct snd_timer *timer2;
 275         spinlock_t timer_lock;
 276
 277         void *private_data;
 278         void (*private_free)(struct snd_opl3 *);
 279
 280         spinlock_t reg_lock;
 281         struct snd_card *card;          /* The card that this belongs to */
 282         int used;                       /* usage flag - exclusive */
 283         unsigned char fm_mode;          /* OPL mode, see SNDRV_DM_FM_MODE_XXX */
 284         unsigned char rhythm;           /* percussion mode flag */
 285         unsigned char max_voices;       /* max number of voices */
 286 #if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE)
 287 #define SNDRV_OPL3_MODE_SYNTH 0         /* OSS - voices allocated by application */
 288 #define SNDRV_OPL3_MODE_SEQ 1           /* ALSA - driver handles voice allocation */
 289         int synth_mode;                 /* synth mode */
 290         int seq_client;
 291
 292         struct snd_seq_device *seq_dev; /* sequencer device */
 293         struct snd_midi_channel_set * chset;
 294
 295 #ifdef CONFIG_SND_SEQUENCER_OSS
 296         struct snd_seq_device *oss_seq_dev;     /* OSS sequencer device */
 297         struct snd_midi_channel_set * oss_chset;
 298 #endif
 299
 300         struct snd_seq_kinstr_ops fm_ops;
 301         struct snd_seq_kinstr_list *ilist;
 302
 303         struct snd_opl3_voice voices[MAX_OPL3_VOICES]; /* Voices (OPL3 'channel') */
 304         int use_time;                   /* allocation counter */
 305
 306         unsigned short connection_reg;  /* connection reg shadow */
 307         unsigned char drum_reg;         /* percussion reg shadow */
 308
 309         spinlock_t voice_lock;          /* Lock for voice access */
 310
 311         struct timer_list tlist;        /* timer for note-offs and effects */
 312         int sys_timer_status;           /* system timer run status */
 313         spinlock_t sys_timer_lock;      /* Lock for system timer access */
 314 #endif
 315         struct mutex access_mutex;      /* locking */
 316 };
 317
 318 /* opl3.c */
 319 void snd_opl3_interrupt(struct snd_hwdep * hw);
 320 int snd_opl3_new(struct snd_card *card, unsigned short hardware,
 321                  struct snd_opl3 **ropl3);
 322 int snd_opl3_init(struct snd_opl3 *opl3);
 323 int snd_opl3_create(struct snd_card *card,
 324                     unsigned long l_port, unsigned long r_port,
 325                     unsigned short hardware,
 326                     int integrated,
 327                     struct snd_opl3 ** opl3);
 328 int snd_opl3_timer_new(struct snd_opl3 * opl3, int timer1_dev, int timer2_dev);
 329 int snd_opl3_hwdep_new(struct snd_opl3 * opl3, int device, int seq_device,
 330                        struct snd_hwdep ** rhwdep);
 331
 332 /* opl3_synth */
 333 int snd_opl3_open(struct snd_hwdep * hw, struct file *file);
 334 int snd_opl3_ioctl(struct snd_hwdep * hw, struct file *file,
 335                    unsigned int cmd, unsigned long arg);
 336 int snd_opl3_release(struct snd_hwdep * hw, struct file *file);
 337
 338 void snd_opl3_reset(struct snd_opl3 * opl3);
 339
 340 #endif /* __SOUND_OPL3_H */