1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * MOTU Midi Timepiece ALSA Main routines 4 * Copyright by Michael T. Mayers (c) Jan 09, 2000 5 * mail: michael@tweakoz.com 6 * Thanks to John Galbraith 7 * 8 * This driver is for the 'Mark Of The Unicorn' (MOTU) 9 * MidiTimePiece AV multiport MIDI interface 10 * 11 * IOPORTS 12 * ------- 13 * 8 MIDI Ins and 8 MIDI outs 14 * Video Sync In (BNC), Word Sync Out (BNC), 15 * ADAT Sync Out (DB9) 16 * SMPTE in/out (1/4") 17 * 2 programmable pedal/footswitch inputs and 4 programmable MIDI controller knobs. 18 * Macintosh RS422 serial port 19 * RS422 "network" port for ganging multiple MTP's 20 * PC Parallel Port ( which this driver currently uses ) 21 * 22 * MISC FEATURES 23 * ------------- 24 * Hardware MIDI routing, merging, and filtering 25 * MIDI Synchronization to Video, ADAT, SMPTE and other Clock sources 26 * 128 'scene' memories, recallable from MIDI program change 27 * 28 * ChangeLog 29 * Jun 11 2001 Takashi Iwai <tiwai@suse.de> 30 * - Recoded & debugged 31 * - Added timer interrupt for midi outputs 32 * - hwports is between 1 and 8, which specifies the number of hardware ports. 33 * The three global ports, computer, adat and broadcast ports, are created 34 * always after h/w and remote ports. 35 */ 36 37 #include <linux/init.h> 38 #include <linux/interrupt.h> 39 #include <linux/module.h> 40 #include <linux/err.h> 41 #include <linux/platform_device.h> 42 #include <linux/ioport.h> 43 #include <linux/io.h> 44 #include <linux/moduleparam.h> 45 #include <sound/core.h> 46 #include <sound/initval.h> 47 #include <sound/rawmidi.h> 48 #include <linux/delay.h> 49 50 /* 51 * globals 52 */ 53 MODULE_AUTHOR("Michael T. Mayers"); 54 MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI"); 55 MODULE_LICENSE("GPL"); 56 57 // io resources 58 #define MTPAV_IOBASE 0x378 59 #define MTPAV_IRQ 7 60 #define MTPAV_MAX_PORTS 8 61 62 static int index = SNDRV_DEFAULT_IDX1; 63 static char *id = SNDRV_DEFAULT_STR1; 64 static long port = MTPAV_IOBASE; /* 0x378, 0x278 */ 65 static int irq = MTPAV_IRQ; /* 7, 5 */ 66 static int hwports = MTPAV_MAX_PORTS; /* use hardware ports 1-8 */ 67 68 module_param(index, int, 0444); 69 MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI."); 70 module_param(id, charp, 0444); 71 MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI."); 72 module_param_hw(port, long, ioport, 0444); 73 MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI."); 74 module_param_hw(irq, int, irq, 0444); 75 MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI."); 76 module_param(hwports, int, 0444); 77 MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI."); 78 79 static struct platform_device *device; 80 81 /* 82 * defines 83 */ 84 //#define USE_FAKE_MTP // don't actually read/write to MTP device (for debugging without an actual unit) (does not work yet) 85 86 // parallel port usage masks 87 #define SIGS_BYTE 0x08 88 #define SIGS_RFD 0x80 89 #define SIGS_IRQ 0x40 90 #define SIGS_IN0 0x10 91 #define SIGS_IN1 0x20 92 93 #define SIGC_WRITE 0x04 94 #define SIGC_READ 0x08 95 #define SIGC_INTEN 0x10 96 97 #define DREG 0 98 #define SREG 1 99 #define CREG 2 100 101 // 102 #define MTPAV_MODE_INPUT_OPENED 0x01 103 #define MTPAV_MODE_OUTPUT_OPENED 0x02 104 #define MTPAV_MODE_INPUT_TRIGGERED 0x04 105 #define MTPAV_MODE_OUTPUT_TRIGGERED 0x08 106 107 #define NUMPORTS (0x12+1) 108 109 110 /* 111 */ 112 113 struct mtpav_port { 114 u8 number; 115 u8 hwport; 116 u8 mode; 117 u8 running_status; 118 struct snd_rawmidi_substream *input; 119 struct snd_rawmidi_substream *output; 120 }; 121 122 struct mtpav { 123 struct snd_card *card; 124 unsigned long port; 125 struct resource *res_port; 126 int irq; /* interrupt (for inputs) */ 127 spinlock_t spinlock; 128 int share_irq; /* number of accesses to input interrupts */ 129 int istimer; /* number of accesses to timer interrupts */ 130 struct timer_list timer; /* timer interrupts for outputs */ 131 struct snd_rawmidi *rmidi; 132 int num_ports; /* number of hw ports (1-8) */ 133 struct mtpav_port ports[NUMPORTS]; /* all ports including computer, adat and bc */ 134 135 u32 inmidiport; /* selected input midi port */ 136 u32 inmidistate; /* during midi command 0xf5 */ 137 138 u32 outmidihwport; /* selected output midi hw port */ 139 }; 140 141 142 /* 143 * possible hardware ports (selected by 0xf5 port message) 144 * 0x00 all ports 145 * 0x01 .. 0x08 this MTP's ports 1..8 146 * 0x09 .. 0x10 networked MTP's ports (9..16) 147 * 0x11 networked MTP's computer port 148 * 0x63 to ADAT 149 * 150 * mappig: 151 * subdevice 0 - (X-1) ports 152 * X - (2*X-1) networked ports 153 * X computer 154 * X+1 ADAT 155 * X+2 all ports 156 * 157 * where X = chip->num_ports 158 */ 159 160 #define MTPAV_PIDX_COMPUTER 0 161 #define MTPAV_PIDX_ADAT 1 162 #define MTPAV_PIDX_BROADCAST 2 163 164 165 static int translate_subdevice_to_hwport(struct mtpav *chip, int subdev) 166 { 167 if (subdev < 0) 168 return 0x01; /* invalid - use port 0 as default */ 169 else if (subdev < chip->num_ports) 170 return subdev + 1; /* single mtp port */ 171 else if (subdev < chip->num_ports * 2) 172 return subdev - chip->num_ports + 0x09; /* remote port */ 173 else if (subdev == chip->num_ports * 2 + MTPAV_PIDX_COMPUTER) 174 return 0x11; /* computer port */ 175 else if (subdev == chip->num_ports + MTPAV_PIDX_ADAT) 176 return 0x63; /* ADAT */ 177 return 0; /* all ports */ 178 } 179 180 static int translate_hwport_to_subdevice(struct mtpav *chip, int hwport) 181 { 182 int p; 183 if (hwport <= 0x00) /* all ports */ 184 return chip->num_ports + MTPAV_PIDX_BROADCAST; 185 else if (hwport <= 0x08) { /* single port */ 186 p = hwport - 1; 187 if (p >= chip->num_ports) 188 p = 0; 189 return p; 190 } else if (hwport <= 0x10) { /* remote port */ 191 p = hwport - 0x09 + chip->num_ports; 192 if (p >= chip->num_ports * 2) 193 p = chip->num_ports; 194 return p; 195 } else if (hwport == 0x11) /* computer port */ 196 return chip->num_ports + MTPAV_PIDX_COMPUTER; 197 else /* ADAT */ 198 return chip->num_ports + MTPAV_PIDX_ADAT; 199 } 200 201 202 /* 203 */ 204 205 static u8 snd_mtpav_getreg(struct mtpav *chip, u16 reg) 206 { 207 u8 rval = 0; 208 209 if (reg == SREG) { 210 rval = inb(chip->port + SREG); 211 rval = (rval & 0xf8); 212 } else if (reg == CREG) { 213 rval = inb(chip->port + CREG); 214 rval = (rval & 0x1c); 215 } 216 217 return rval; 218 } 219 220 /* 221 */ 222 223 static inline void snd_mtpav_mputreg(struct mtpav *chip, u16 reg, u8 val) 224 { 225 if (reg == DREG || reg == CREG) 226 outb(val, chip->port + reg); 227 } 228 229 /* 230 */ 231 232 static void snd_mtpav_wait_rfdhi(struct mtpav *chip) 233 { 234 int counts = 10000; 235 u8 sbyte; 236 237 sbyte = snd_mtpav_getreg(chip, SREG); 238 while (!(sbyte & SIGS_RFD) && counts--) { 239 sbyte = snd_mtpav_getreg(chip, SREG); 240 udelay(10); 241 } 242 } 243 244 static void snd_mtpav_send_byte(struct mtpav *chip, u8 byte) 245 { 246 u8 tcbyt; 247 u8 clrwrite; 248 u8 setwrite; 249 250 snd_mtpav_wait_rfdhi(chip); 251 252 ///////////////// 253 254 tcbyt = snd_mtpav_getreg(chip, CREG); 255 clrwrite = tcbyt & (SIGC_WRITE ^ 0xff); 256 setwrite = tcbyt | SIGC_WRITE; 257 258 snd_mtpav_mputreg(chip, DREG, byte); 259 snd_mtpav_mputreg(chip, CREG, clrwrite); // clear write bit 260 261 snd_mtpav_mputreg(chip, CREG, setwrite); // set write bit 262 263 } 264 265 266 /* 267 */ 268 269 /* call this with spin lock held */ 270 static void snd_mtpav_output_port_write(struct mtpav *mtp_card, 271 struct mtpav_port *portp, 272 struct snd_rawmidi_substream *substream) 273 { 274 u8 outbyte; 275 276 // Get the outbyte first, so we can emulate running status if 277 // necessary 278 if (snd_rawmidi_transmit(substream, &outbyte, 1) != 1) 279 return; 280 281 // send port change command if necessary 282 283 if (portp->hwport != mtp_card->outmidihwport) { 284 mtp_card->outmidihwport = portp->hwport; 285 286 snd_mtpav_send_byte(mtp_card, 0xf5); 287 snd_mtpav_send_byte(mtp_card, portp->hwport); 288 if (!(outbyte & 0x80) && portp->running_status) 289 snd_mtpav_send_byte(mtp_card, portp->running_status); 290 } 291 292 // send data 293 294 do { 295 if (outbyte & 0x80) 296 portp->running_status = outbyte; 297 298 snd_mtpav_send_byte(mtp_card, outbyte); 299 } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1); 300 } 301 302 static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream) 303 { 304 struct mtpav *mtp_card = substream->rmidi->private_data; 305 struct mtpav_port *portp = &mtp_card->ports[substream->number]; 306 unsigned long flags; 307 308 spin_lock_irqsave(&mtp_card->spinlock, flags); 309 snd_mtpav_output_port_write(mtp_card, portp, substream); 310 spin_unlock_irqrestore(&mtp_card->spinlock, flags); 311 } 312 313 314 /* 315 * mtpav control 316 */ 317 318 static void snd_mtpav_portscan(struct mtpav *chip) // put mtp into smart routing mode 319 { 320 u8 p; 321 322 for (p = 0; p < 8; p++) { 323 snd_mtpav_send_byte(chip, 0xf5); 324 snd_mtpav_send_byte(chip, p); 325 snd_mtpav_send_byte(chip, 0xfe); 326 } 327 } 328 329 /* 330 */ 331 332 static int snd_mtpav_input_open(struct snd_rawmidi_substream *substream) 333 { 334 struct mtpav *mtp_card = substream->rmidi->private_data; 335 struct mtpav_port *portp = &mtp_card->ports[substream->number]; 336 unsigned long flags; 337 338 spin_lock_irqsave(&mtp_card->spinlock, flags); 339 portp->mode |= MTPAV_MODE_INPUT_OPENED; 340 portp->input = substream; 341 if (mtp_card->share_irq++ == 0) 342 snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN | SIGC_WRITE)); // enable pport interrupts 343 spin_unlock_irqrestore(&mtp_card->spinlock, flags); 344 return 0; 345 } 346 347 /* 348 */ 349 350 static int snd_mtpav_input_close(struct snd_rawmidi_substream *substream) 351 { 352 struct mtpav *mtp_card = substream->rmidi->private_data; 353 struct mtpav_port *portp = &mtp_card->ports[substream->number]; 354 unsigned long flags; 355 356 spin_lock_irqsave(&mtp_card->spinlock, flags); 357 portp->mode &= ~MTPAV_MODE_INPUT_OPENED; 358 portp->input = NULL; 359 if (--mtp_card->share_irq == 0) 360 snd_mtpav_mputreg(mtp_card, CREG, 0); // disable pport interrupts 361 spin_unlock_irqrestore(&mtp_card->spinlock, flags); 362 return 0; 363 } 364 365 /* 366 */ 367 368 static void snd_mtpav_input_trigger(struct snd_rawmidi_substream *substream, int up) 369 { 370 struct mtpav *mtp_card = substream->rmidi->private_data; 371 struct mtpav_port *portp = &mtp_card->ports[substream->number]; 372 unsigned long flags; 373 374 spin_lock_irqsave(&mtp_card->spinlock, flags); 375 if (up) 376 portp->mode |= MTPAV_MODE_INPUT_TRIGGERED; 377 else 378 portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED; 379 spin_unlock_irqrestore(&mtp_card->spinlock, flags); 380 381 } 382 383 384 /* 385 * timer interrupt for outputs 386 */ 387 388 static void snd_mtpav_output_timer(struct timer_list *t) 389 { 390 unsigned long flags; 391 struct mtpav *chip = from_timer(chip, t, timer); 392 int p; 393 394 spin_lock_irqsave(&chip->spinlock, flags); 395 /* reprogram timer */ 396 mod_timer(&chip->timer, 1 + jiffies); 397 /* process each port */ 398 for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) { 399 struct mtpav_port *portp = &chip->ports[p]; 400 if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output) 401 snd_mtpav_output_port_write(chip, portp, portp->output); 402 } 403 spin_unlock_irqrestore(&chip->spinlock, flags); 404 } 405 406 /* spinlock held! */ 407 static void snd_mtpav_add_output_timer(struct mtpav *chip) 408 { 409 mod_timer(&chip->timer, 1 + jiffies); 410 } 411 412 /* spinlock held! */ 413 static void snd_mtpav_remove_output_timer(struct mtpav *chip) 414 { 415 del_timer(&chip->timer); 416 } 417 418 /* 419 */ 420 421 static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream) 422 { 423 struct mtpav *mtp_card = substream->rmidi->private_data; 424 struct mtpav_port *portp = &mtp_card->ports[substream->number]; 425 unsigned long flags; 426 427 spin_lock_irqsave(&mtp_card->spinlock, flags); 428 portp->mode |= MTPAV_MODE_OUTPUT_OPENED; 429 portp->output = substream; 430 spin_unlock_irqrestore(&mtp_card->spinlock, flags); 431 return 0; 432 }; 433 434 /* 435 */ 436 437 static int snd_mtpav_output_close(struct snd_rawmidi_substream *substream) 438 { 439 struct mtpav *mtp_card = substream->rmidi->private_data; 440 struct mtpav_port *portp = &mtp_card->ports[substream->number]; 441 unsigned long flags; 442 443 spin_lock_irqsave(&mtp_card->spinlock, flags); 444 portp->mode &= ~MTPAV_MODE_OUTPUT_OPENED; 445 portp->output = NULL; 446 spin_unlock_irqrestore(&mtp_card->spinlock, flags); 447 return 0; 448 }; 449 450 /* 451 */ 452 453 static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up) 454 { 455 struct mtpav *mtp_card = substream->rmidi->private_data; 456 struct mtpav_port *portp = &mtp_card->ports[substream->number]; 457 unsigned long flags; 458 459 spin_lock_irqsave(&mtp_card->spinlock, flags); 460 if (up) { 461 if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) { 462 if (mtp_card->istimer++ == 0) 463 snd_mtpav_add_output_timer(mtp_card); 464 portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED; 465 } 466 } else { 467 portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED; 468 if (--mtp_card->istimer == 0) 469 snd_mtpav_remove_output_timer(mtp_card); 470 } 471 spin_unlock_irqrestore(&mtp_card->spinlock, flags); 472 473 if (up) 474 snd_mtpav_output_write(substream); 475 } 476 477 /* 478 * midi interrupt for inputs 479 */ 480 481 static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte) 482 { 483 struct mtpav_port *portp; 484 485 if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST) 486 return; 487 488 portp = &mcrd->ports[mcrd->inmidiport]; 489 if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED) 490 snd_rawmidi_receive(portp->input, &inbyte, 1); 491 } 492 493 static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte) 494 { 495 if (inbyte >= 0xf8) { 496 /* real-time midi code */ 497 snd_mtpav_inmidi_process(mcrd, inbyte); 498 return; 499 } 500 501 if (mcrd->inmidistate == 0) { // awaiting command 502 if (inbyte == 0xf5) // MTP port # 503 mcrd->inmidistate = 1; 504 else 505 snd_mtpav_inmidi_process(mcrd, inbyte); 506 } else if (mcrd->inmidistate) { 507 mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte); 508 mcrd->inmidistate = 0; 509 } 510 } 511 512 static void snd_mtpav_read_bytes(struct mtpav *mcrd) 513 { 514 u8 clrread, setread; 515 u8 mtp_read_byte; 516 u8 sr, cbyt; 517 int i; 518 519 u8 sbyt = snd_mtpav_getreg(mcrd, SREG); 520 521 if (!(sbyt & SIGS_BYTE)) 522 return; 523 524 cbyt = snd_mtpav_getreg(mcrd, CREG); 525 clrread = cbyt & (SIGC_READ ^ 0xff); 526 setread = cbyt | SIGC_READ; 527 528 do { 529 530 mtp_read_byte = 0; 531 for (i = 0; i < 4; i++) { 532 snd_mtpav_mputreg(mcrd, CREG, setread); 533 sr = snd_mtpav_getreg(mcrd, SREG); 534 snd_mtpav_mputreg(mcrd, CREG, clrread); 535 536 sr &= SIGS_IN0 | SIGS_IN1; 537 sr >>= 4; 538 mtp_read_byte |= sr << (i * 2); 539 } 540 541 snd_mtpav_inmidi_h(mcrd, mtp_read_byte); 542 543 sbyt = snd_mtpav_getreg(mcrd, SREG); 544 545 } while (sbyt & SIGS_BYTE); 546 } 547 548 static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id) 549 { 550 struct mtpav *mcard = dev_id; 551 552 spin_lock(&mcard->spinlock); 553 snd_mtpav_read_bytes(mcard); 554 spin_unlock(&mcard->spinlock); 555 return IRQ_HANDLED; 556 } 557 558 /* 559 * get ISA resources 560 */ 561 static int snd_mtpav_get_ISA(struct mtpav *mcard) 562 { 563 mcard->res_port = devm_request_region(mcard->card->dev, port, 3, 564 "MotuMTPAV MIDI"); 565 if (!mcard->res_port) { 566 dev_err(mcard->card->dev, "MTVAP port 0x%lx is busy\n", port); 567 return -EBUSY; 568 } 569 mcard->port = port; 570 if (devm_request_irq(mcard->card->dev, irq, snd_mtpav_irqh, 0, 571 "MOTU MTPAV", mcard)) { 572 dev_err(mcard->card->dev, "MTVAP IRQ %d busy\n", irq); 573 return -EBUSY; 574 } 575 mcard->irq = irq; 576 return 0; 577 } 578 579 580 /* 581 */ 582 583 static const struct snd_rawmidi_ops snd_mtpav_output = { 584 .open = snd_mtpav_output_open, 585 .close = snd_mtpav_output_close, 586 .trigger = snd_mtpav_output_trigger, 587 }; 588 589 static const struct snd_rawmidi_ops snd_mtpav_input = { 590 .open = snd_mtpav_input_open, 591 .close = snd_mtpav_input_close, 592 .trigger = snd_mtpav_input_trigger, 593 }; 594 595 596 /* 597 * get RAWMIDI resources 598 */ 599 600 static void snd_mtpav_set_name(struct mtpav *chip, 601 struct snd_rawmidi_substream *substream) 602 { 603 if (substream->number >= 0 && substream->number < chip->num_ports) 604 sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1); 605 else if (substream->number >= 8 && substream->number < chip->num_ports * 2) 606 sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1); 607 else if (substream->number == chip->num_ports * 2) 608 strcpy(substream->name, "MTP computer"); 609 else if (substream->number == chip->num_ports * 2 + 1) 610 strcpy(substream->name, "MTP ADAT"); 611 else 612 strcpy(substream->name, "MTP broadcast"); 613 } 614 615 static int snd_mtpav_get_RAWMIDI(struct mtpav *mcard) 616 { 617 int rval; 618 struct snd_rawmidi *rawmidi; 619 struct snd_rawmidi_substream *substream; 620 struct list_head *list; 621 622 if (hwports < 1) 623 hwports = 1; 624 else if (hwports > 8) 625 hwports = 8; 626 mcard->num_ports = hwports; 627 628 rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0, 629 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1, 630 mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1, 631 &mcard->rmidi); 632 if (rval < 0) 633 return rval; 634 rawmidi = mcard->rmidi; 635 rawmidi->private_data = mcard; 636 637 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) { 638 substream = list_entry(list, struct snd_rawmidi_substream, list); 639 snd_mtpav_set_name(mcard, substream); 640 substream->ops = &snd_mtpav_input; 641 } 642 list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) { 643 substream = list_entry(list, struct snd_rawmidi_substream, list); 644 snd_mtpav_set_name(mcard, substream); 645 substream->ops = &snd_mtpav_output; 646 mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number); 647 } 648 rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | 649 SNDRV_RAWMIDI_INFO_DUPLEX; 650 sprintf(rawmidi->name, "MTP AV MIDI"); 651 return 0; 652 } 653 654 /* 655 */ 656 657 static void snd_mtpav_free(struct snd_card *card) 658 { 659 struct mtpav *crd = card->private_data; 660 unsigned long flags; 661 662 spin_lock_irqsave(&crd->spinlock, flags); 663 if (crd->istimer > 0) 664 snd_mtpav_remove_output_timer(crd); 665 spin_unlock_irqrestore(&crd->spinlock, flags); 666 } 667 668 /* 669 */ 670 static int snd_mtpav_probe(struct platform_device *dev) 671 { 672 struct snd_card *card; 673 int err; 674 struct mtpav *mtp_card; 675 676 err = snd_devm_card_new(&dev->dev, index, id, THIS_MODULE, 677 sizeof(*mtp_card), &card); 678 if (err < 0) 679 return err; 680 681 mtp_card = card->private_data; 682 spin_lock_init(&mtp_card->spinlock); 683 mtp_card->card = card; 684 mtp_card->irq = -1; 685 mtp_card->share_irq = 0; 686 mtp_card->inmidistate = 0; 687 mtp_card->outmidihwport = 0xffffffff; 688 timer_setup(&mtp_card->timer, snd_mtpav_output_timer, 0); 689 690 err = snd_mtpav_get_RAWMIDI(mtp_card); 691 if (err < 0) 692 return err; 693 694 mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST; 695 696 err = snd_mtpav_get_ISA(mtp_card); 697 if (err < 0) 698 return err; 699 700 strcpy(card->driver, "MTPAV"); 701 strcpy(card->shortname, "MTPAV on parallel port"); 702 snprintf(card->longname, sizeof(card->longname), 703 "MTPAV on parallel port at 0x%lx", port); 704 705 snd_mtpav_portscan(mtp_card); 706 707 err = snd_card_register(mtp_card->card); 708 if (err < 0) 709 return err; 710 711 card->private_free = snd_mtpav_free; 712 713 platform_set_drvdata(dev, card); 714 dev_info(card->dev, 715 "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", 716 irq, port); 717 return 0; 718 } 719 720 #define SND_MTPAV_DRIVER "snd_mtpav" 721 722 static struct platform_driver snd_mtpav_driver = { 723 .probe = snd_mtpav_probe, 724 .driver = { 725 .name = SND_MTPAV_DRIVER, 726 }, 727 }; 728 729 static int __init alsa_card_mtpav_init(void) 730 { 731 int err; 732 733 err = platform_driver_register(&snd_mtpav_driver); 734 if (err < 0) 735 return err; 736 737 device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0); 738 if (!IS_ERR(device)) { 739 if (platform_get_drvdata(device)) 740 return 0; 741 platform_device_unregister(device); 742 err = -ENODEV; 743 } else 744 err = PTR_ERR(device); 745 platform_driver_unregister(&snd_mtpav_driver); 746 return err; 747 } 748 749 static void __exit alsa_card_mtpav_exit(void) 750 { 751 platform_device_unregister(device); 752 platform_driver_unregister(&snd_mtpav_driver); 753 } 754 755 module_init(alsa_card_mtpav_init) 756 module_exit(alsa_card_mtpav_exit) 757