1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 #ifndef __SOUND_OPL3_H 3 #define __SOUND_OPL3_H 4 5 /* 6 * Definitions of the OPL-3 registers. 7 * 8 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>, 9 * Hannu Savolainen 1993-1996 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 #include <sound/core.h> 39 #include <sound/hwdep.h> 40 #include <sound/timer.h> 41 #include <sound/seq_midi_emul.h> 42 #include <sound/seq_oss.h> 43 #include <sound/seq_oss_legacy.h> 44 #include <sound/seq_device.h> 45 #include <sound/asound_fm.h> 46 47 /* 48 * Register numbers for the global registers 49 */ 50 51 #define OPL3_REG_TEST 0x01 52 #define OPL3_ENABLE_WAVE_SELECT 0x20 53 54 #define OPL3_REG_TIMER1 0x02 55 #define OPL3_REG_TIMER2 0x03 56 #define OPL3_REG_TIMER_CONTROL 0x04 /* Left side */ 57 #define OPL3_IRQ_RESET 0x80 58 #define OPL3_TIMER1_MASK 0x40 59 #define OPL3_TIMER2_MASK 0x20 60 #define OPL3_TIMER1_START 0x01 61 #define OPL3_TIMER2_START 0x02 62 63 #define OPL3_REG_CONNECTION_SELECT 0x04 /* Right side */ 64 #define OPL3_LEFT_4OP_0 0x01 65 #define OPL3_LEFT_4OP_1 0x02 66 #define OPL3_LEFT_4OP_2 0x04 67 #define OPL3_RIGHT_4OP_0 0x08 68 #define OPL3_RIGHT_4OP_1 0x10 69 #define OPL3_RIGHT_4OP_2 0x20 70 71 #define OPL3_REG_MODE 0x05 /* Right side */ 72 #define OPL3_OPL3_ENABLE 0x01 /* OPL3 mode */ 73 #define OPL3_OPL4_ENABLE 0x02 /* OPL4 mode */ 74 75 #define OPL3_REG_KBD_SPLIT 0x08 /* Left side */ 76 #define OPL3_COMPOSITE_SINE_WAVE_MODE 0x80 /* Don't use with OPL-3? */ 77 #define OPL3_KEYBOARD_SPLIT 0x40 78 79 #define OPL3_REG_PERCUSSION 0xbd /* Left side only */ 80 #define OPL3_TREMOLO_DEPTH 0x80 81 #define OPL3_VIBRATO_DEPTH 0x40 82 #define OPL3_PERCUSSION_ENABLE 0x20 83 #define OPL3_BASSDRUM_ON 0x10 84 #define OPL3_SNAREDRUM_ON 0x08 85 #define OPL3_TOMTOM_ON 0x04 86 #define OPL3_CYMBAL_ON 0x02 87 #define OPL3_HIHAT_ON 0x01 88 89 /* 90 * Offsets to the register banks for operators. To get the 91 * register number just add the operator offset to the bank offset 92 * 93 * AM/VIB/EG/KSR/Multiple (0x20 to 0x35) 94 */ 95 #define OPL3_REG_AM_VIB 0x20 96 #define OPL3_TREMOLO_ON 0x80 97 #define OPL3_VIBRATO_ON 0x40 98 #define OPL3_SUSTAIN_ON 0x20 99 #define OPL3_KSR 0x10 /* Key scaling rate */ 100 #define OPL3_MULTIPLE_MASK 0x0f /* Frequency multiplier */ 101 102 /* 103 * KSL/Total level (0x40 to 0x55) 104 */ 105 #define OPL3_REG_KSL_LEVEL 0x40 106 #define OPL3_KSL_MASK 0xc0 /* Envelope scaling bits */ 107 #define OPL3_TOTAL_LEVEL_MASK 0x3f /* Strength (volume) of OP */ 108 109 /* 110 * Attack / Decay rate (0x60 to 0x75) 111 */ 112 #define OPL3_REG_ATTACK_DECAY 0x60 113 #define OPL3_ATTACK_MASK 0xf0 114 #define OPL3_DECAY_MASK 0x0f 115 116 /* 117 * Sustain level / Release rate (0x80 to 0x95) 118 */ 119 #define OPL3_REG_SUSTAIN_RELEASE 0x80 120 #define OPL3_SUSTAIN_MASK 0xf0 121 #define OPL3_RELEASE_MASK 0x0f 122 123 /* 124 * Wave select (0xE0 to 0xF5) 125 */ 126 #define OPL3_REG_WAVE_SELECT 0xe0 127 #define OPL3_WAVE_SELECT_MASK 0x07 128 129 /* 130 * Offsets to the register banks for voices. Just add to the 131 * voice number to get the register number. 132 * 133 * F-Number low bits (0xA0 to 0xA8). 134 */ 135 #define OPL3_REG_FNUM_LOW 0xa0 136 137 /* 138 * F-number high bits / Key on / Block (octave) (0xB0 to 0xB8) 139 */ 140 #define OPL3_REG_KEYON_BLOCK 0xb0 141 #define OPL3_KEYON_BIT 0x20 142 #define OPL3_BLOCKNUM_MASK 0x1c 143 #define OPL3_FNUM_HIGH_MASK 0x03 144 145 /* 146 * Feedback / Connection (0xc0 to 0xc8) 147 * 148 * These registers have two new bits when the OPL-3 mode 149 * is selected. These bits controls connecting the voice 150 * to the stereo channels. For 4 OP voices this bit is 151 * defined in the second half of the voice (add 3 to the 152 * register offset). 153 * 154 * For 4 OP voices the connection bit is used in the 155 * both halves (gives 4 ways to connect the operators). 156 */ 157 #define OPL3_REG_FEEDBACK_CONNECTION 0xc0 158 #define OPL3_FEEDBACK_MASK 0x0e /* Valid just for 1st OP of a voice */ 159 #define OPL3_CONNECTION_BIT 0x01 160 /* 161 * In the 4 OP mode there is four possible configurations how the 162 * operators can be connected together (in 2 OP modes there is just 163 * AM or FM). The 4 OP connection mode is defined by the rightmost 164 * bit of the FEEDBACK_CONNECTION (0xC0-0xC8) on the both halves. 165 * 166 * First half Second half Mode 167 * 168 * +---+ 169 * v | 170 * 0 0 >+-1-+--2--3--4--> 171 * 172 * 173 * 174 * +---+ 175 * | | 176 * 0 1 >+-1-+--2-+ 177 * |-> 178 * >--3----4-+ 179 * 180 * +---+ 181 * | | 182 * 1 0 >+-1-+-----+ 183 * |-> 184 * >--2--3--4-+ 185 * 186 * +---+ 187 * | | 188 * 1 1 >+-1-+--+ 189 * | 190 * >--2--3-+-> 191 * | 192 * >--4----+ 193 */ 194 #define OPL3_STEREO_BITS 0x30 /* OPL-3 only */ 195 #define OPL3_VOICE_TO_LEFT 0x10 196 #define OPL3_VOICE_TO_RIGHT 0x20 197 198 /* 199 200 */ 201 202 #define OPL3_LEFT 0x0000 203 #define OPL3_RIGHT 0x0100 204 205 #define OPL3_HW_AUTO 0x0000 206 #define OPL3_HW_OPL2 0x0200 207 #define OPL3_HW_OPL3 0x0300 208 #define OPL3_HW_OPL3_SV 0x0301 /* S3 SonicVibes */ 209 #define OPL3_HW_OPL3_CS 0x0302 /* CS4232/CS4236+ */ 210 #define OPL3_HW_OPL3_FM801 0x0303 /* FM801 */ 211 #define OPL3_HW_OPL3_CS4281 0x0304 /* CS4281 */ 212 #define OPL3_HW_OPL4 0x0400 /* YMF278B/YMF295 */ 213 #define OPL3_HW_OPL4_ML 0x0401 /* YMF704/YMF721 */ 214 #define OPL3_HW_MASK 0xff00 215 216 #define MAX_OPL2_VOICES 9 217 #define MAX_OPL3_VOICES 18 218 219 struct snd_opl3; 220 221 /* 222 * Instrument record, aka "Patch" 223 */ 224 225 /* FM operator */ 226 struct fm_operator { 227 unsigned char am_vib; 228 unsigned char ksl_level; 229 unsigned char attack_decay; 230 unsigned char sustain_release; 231 unsigned char wave_select; 232 } __packed; 233 234 /* Instrument data */ 235 struct fm_instrument { 236 struct fm_operator op[4]; 237 unsigned char feedback_connection[2]; 238 unsigned char echo_delay; 239 unsigned char echo_atten; 240 unsigned char chorus_spread; 241 unsigned char trnsps; 242 unsigned char fix_dur; 243 unsigned char modes; 244 unsigned char fix_key; 245 }; 246 247 /* type */ 248 #define FM_PATCH_OPL2 0x01 /* OPL2 2 operators FM instrument */ 249 #define FM_PATCH_OPL3 0x02 /* OPL3 4 operators FM instrument */ 250 251 /* Instrument record */ 252 struct fm_patch { 253 unsigned char prog; 254 unsigned char bank; 255 unsigned char type; 256 struct fm_instrument inst; 257 char name[24]; 258 struct fm_patch *next; 259 }; 260 261 262 /* 263 * A structure to keep track of each hardware voice 264 */ 265 struct snd_opl3_voice { 266 int state; /* status */ 267 #define SNDRV_OPL3_ST_OFF 0 /* Not playing */ 268 #define SNDRV_OPL3_ST_ON_2OP 1 /* 2op voice is allocated */ 269 #define SNDRV_OPL3_ST_ON_4OP 2 /* 4op voice is allocated */ 270 #define SNDRV_OPL3_ST_NOT_AVAIL -1 /* voice is not available */ 271 272 unsigned int time; /* An allocation time */ 273 unsigned char note; /* Note currently assigned to this voice */ 274 275 unsigned long note_off; /* note-off time */ 276 int note_off_check; /* check note-off time */ 277 278 unsigned char keyon_reg; /* KON register shadow */ 279 280 struct snd_midi_channel *chan; /* Midi channel for this note */ 281 }; 282 283 struct snd_opl3 { 284 unsigned long l_port; 285 unsigned long r_port; 286 struct resource *res_l_port; 287 struct resource *res_r_port; 288 unsigned short hardware; 289 /* hardware access */ 290 void (*command) (struct snd_opl3 * opl3, unsigned short cmd, unsigned char val); 291 unsigned short timer_enable; 292 int seq_dev_num; /* sequencer device number */ 293 struct snd_timer *timer1; 294 struct snd_timer *timer2; 295 spinlock_t timer_lock; 296 297 void *private_data; 298 void (*private_free)(struct snd_opl3 *); 299 300 struct snd_hwdep *hwdep; 301 spinlock_t reg_lock; 302 struct snd_card *card; /* The card that this belongs to */ 303 unsigned char fm_mode; /* OPL mode, see SNDRV_DM_FM_MODE_XXX */ 304 unsigned char rhythm; /* percussion mode flag */ 305 unsigned char max_voices; /* max number of voices */ 306 #if IS_ENABLED(CONFIG_SND_SEQUENCER) 307 #define SNDRV_OPL3_MODE_SYNTH 0 /* OSS - voices allocated by application */ 308 #define SNDRV_OPL3_MODE_SEQ 1 /* ALSA - driver handles voice allocation */ 309 int synth_mode; /* synth mode */ 310 int seq_client; 311 312 struct snd_seq_device *seq_dev; /* sequencer device */ 313 struct snd_midi_channel_set * chset; 314 315 #if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS) 316 struct snd_seq_device *oss_seq_dev; /* OSS sequencer device */ 317 struct snd_midi_channel_set * oss_chset; 318 #endif 319 320 #define OPL3_PATCH_HASH_SIZE 32 321 struct fm_patch *patch_table[OPL3_PATCH_HASH_SIZE]; 322 323 struct snd_opl3_voice voices[MAX_OPL3_VOICES]; /* Voices (OPL3 'channel') */ 324 int use_time; /* allocation counter */ 325 326 unsigned short connection_reg; /* connection reg shadow */ 327 unsigned char drum_reg; /* percussion reg shadow */ 328 329 spinlock_t voice_lock; /* Lock for voice access */ 330 331 struct timer_list tlist; /* timer for note-offs and effects */ 332 int sys_timer_status; /* system timer run status */ 333 spinlock_t sys_timer_lock; /* Lock for system timer access */ 334 #endif 335 }; 336 337 /* opl3.c */ 338 void snd_opl3_interrupt(struct snd_hwdep * hw); 339 int snd_opl3_new(struct snd_card *card, unsigned short hardware, 340 struct snd_opl3 **ropl3); 341 int snd_opl3_init(struct snd_opl3 *opl3); 342 int snd_opl3_create(struct snd_card *card, 343 unsigned long l_port, unsigned long r_port, 344 unsigned short hardware, 345 int integrated, 346 struct snd_opl3 ** opl3); 347 int snd_opl3_timer_new(struct snd_opl3 * opl3, int timer1_dev, int timer2_dev); 348 int snd_opl3_hwdep_new(struct snd_opl3 * opl3, int device, int seq_device, 349 struct snd_hwdep ** rhwdep); 350 351 /* opl3_synth */ 352 int snd_opl3_open(struct snd_hwdep * hw, struct file *file); 353 int snd_opl3_ioctl(struct snd_hwdep * hw, struct file *file, 354 unsigned int cmd, unsigned long arg); 355 int snd_opl3_release(struct snd_hwdep * hw, struct file *file); 356 357 void snd_opl3_reset(struct snd_opl3 * opl3); 358 359 #if IS_ENABLED(CONFIG_SND_SEQUENCER) 360 long snd_opl3_write(struct snd_hwdep *hw, const char __user *buf, long count, 361 loff_t *offset); 362 int snd_opl3_load_patch(struct snd_opl3 *opl3, 363 int prog, int bank, int type, 364 const char *name, 365 const unsigned char *ext, 366 const unsigned char *data); 367 struct fm_patch *snd_opl3_find_patch(struct snd_opl3 *opl3, int prog, int bank, 368 int create_patch); 369 void snd_opl3_clear_patches(struct snd_opl3 *opl3); 370 #else 371 #define snd_opl3_write NULL snd_opl3_clear_patches(struct snd_opl3 * opl3)372 static inline void snd_opl3_clear_patches(struct snd_opl3 *opl3) {} 373 #endif 374 375 #endif /* __SOUND_OPL3_H */ 376