sound/drivers/mtpav.c

   1 /*
   2  *      MOTU Midi Timepiece ALSA Main routines
   3  *      Copyright by Michael T. Mayers (c) Jan 09, 2000
   4  *      mail: michael@tweakoz.com
   5  *      Thanks to John Galbraith
   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  *      This driver is for the 'Mark Of The Unicorn' (MOTU)
  23  *      MidiTimePiece AV multiport MIDI interface
  24  *
  25  *      IOPORTS
  26  *      -------
  27  *      8 MIDI Ins and 8 MIDI outs
  28  *      Video Sync In (BNC), Word Sync Out (BNC),
  29  *      ADAT Sync Out (DB9)
  30  *      SMPTE in/out (1/4")
  31  *      2 programmable pedal/footswitch inputs and 4 programmable MIDI controller knobs.
  32  *      Macintosh RS422 serial port
  33  *      RS422 "network" port for ganging multiple MTP's
  34  *      PC Parallel Port ( which this driver currently uses )
  35  *
  36  *      MISC FEATURES
  37  *      -------------
  38  *      Hardware MIDI routing, merging, and filtering
  39  *      MIDI Synchronization to Video, ADAT, SMPTE and other Clock sources
  40  *      128 'scene' memories, recallable from MIDI program change
  41  *
  42  *
  43  * ChangeLog
  44  * Jun 11 2001  Takashi Iwai <tiwai@suse.de>
  45  *      - Recoded & debugged
  46  *      - Added timer interrupt for midi outputs
  47  *      - hwports is between 1 and 8, which specifies the number of hardware ports.
  48  *        The three global ports, computer, adat and broadcast ports, are created
  49  *        always after h/w and remote ports.
  50  *
  51  */
  52
  53 #include <linux/init.h>
  54 #include <linux/interrupt.h>
  55 #include <linux/module.h>
  56 #include <linux/err.h>
  57 #include <linux/platform_device.h>
  58 #include <linux/ioport.h>
  59 #include <linux/io.h>
  60 #include <linux/moduleparam.h>
  61 #include <sound/core.h>
  62 #include <sound/initval.h>
  63 #include <sound/rawmidi.h>
  64 #include <linux/delay.h>
  65
  66 /*
  67  *      globals
  68  */
  69 MODULE_AUTHOR("Michael T. Mayers");
  70 MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI");
  71 MODULE_LICENSE("GPL");
  72 MODULE_SUPPORTED_DEVICE("{{MOTU,MidiTimePiece AV multiport MIDI}}");
  73
  74 // io resources
  75 #define MTPAV_IOBASE            0x378
  76 #define MTPAV_IRQ               7
  77 #define MTPAV_MAX_PORTS         8
  78
  79 static int index = SNDRV_DEFAULT_IDX1;
  80 static char *id = SNDRV_DEFAULT_STR1;
  81 static long port = MTPAV_IOBASE;        /* 0x378, 0x278 */
  82 static int irq = MTPAV_IRQ;             /* 7, 5 */
  83 static int hwports = MTPAV_MAX_PORTS;   /* use hardware ports 1-8 */
  84
  85 module_param(index, int, 0444);
  86 MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
  87 module_param(id, charp, 0444);
  88 MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
  89 module_param(port, long, 0444);
  90 MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
  91 module_param(irq, int, 0444);
  92 MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
  93 module_param(hwports, int, 0444);
  94 MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
  95
  96 static struct platform_device *device;
  97
  98 /*
  99  *      defines
 100  */
 101 //#define USE_FAKE_MTP //       don't actually read/write to MTP device (for debugging without an actual unit) (does not work yet)
 102
 103 // parallel port usage masks
 104 #define SIGS_BYTE 0x08
 105 #define SIGS_RFD 0x80
 106 #define SIGS_IRQ 0x40
 107 #define SIGS_IN0 0x10
 108 #define SIGS_IN1 0x20
 109
 110 #define SIGC_WRITE 0x04
 111 #define SIGC_READ 0x08
 112 #define SIGC_INTEN 0x10
 113
 114 #define DREG 0
 115 #define SREG 1
 116 #define CREG 2
 117
 118 //
 119 #define MTPAV_MODE_INPUT_OPENED         0x01
 120 #define MTPAV_MODE_OUTPUT_OPENED        0x02
 121 #define MTPAV_MODE_INPUT_TRIGGERED      0x04
 122 #define MTPAV_MODE_OUTPUT_TRIGGERED     0x08
 123
 124 #define NUMPORTS (0x12+1)
 125
 126
 127 /*
 128  */
 129
 130 struct mtpav_port {
 131         u8 number;
 132         u8 hwport;
 133         u8 mode;
 134         u8 running_status;
 135         struct snd_rawmidi_substream *input;
 136         struct snd_rawmidi_substream *output;
 137 };
 138
 139 struct mtpav {
 140         struct snd_card *card;
 141         unsigned long port;
 142         struct resource *res_port;
 143         int irq;                        /* interrupt (for inputs) */
 144         spinlock_t spinlock;
 145         int share_irq;                  /* number of accesses to input interrupts */
 146         int istimer;                    /* number of accesses to timer interrupts */
 147         struct timer_list timer;        /* timer interrupts for outputs */
 148         struct snd_rawmidi *rmidi;
 149         int num_ports;          /* number of hw ports (1-8) */
 150         struct mtpav_port ports[NUMPORTS];      /* all ports including computer, adat and bc */
 151
 152         u32 inmidiport;         /* selected input midi port */
 153         u32 inmidistate;        /* during midi command 0xf5 */
 154
 155         u32 outmidihwport;      /* selected output midi hw port */
 156 };
 157
 158
 159 /*
 160  * possible hardware ports (selected by 0xf5 port message)
 161  *      0x00            all ports
 162  *      0x01 .. 0x08    this MTP's ports 1..8
 163  *      0x09 .. 0x10    networked MTP's ports (9..16)
 164  *      0x11            networked MTP's computer port
 165  *      0x63            to ADAT
 166  *
 167  * mappig:
 168  *  subdevice 0 - (X-1)    ports
 169  *            X - (2*X-1)  networked ports
 170  *            X            computer
 171  *            X+1          ADAT
 172  *            X+2          all ports
 173  *
 174  *  where X = chip->num_ports
 175  */
 176
 177 #define MTPAV_PIDX_COMPUTER     0
 178 #define MTPAV_PIDX_ADAT         1
 179 #define MTPAV_PIDX_BROADCAST    2
 180
 181
 182 static int translate_subdevice_to_hwport(struct mtpav *chip, int subdev)
 183 {
 184         if (subdev < 0)
 185                 return 0x01; /* invalid - use port 0 as default */
 186         else if (subdev < chip->num_ports)
 187                 return subdev + 1; /* single mtp port */
 188         else if (subdev < chip->num_ports * 2)
 189                 return subdev - chip->num_ports + 0x09; /* remote port */
 190         else if (subdev == chip->num_ports * 2 + MTPAV_PIDX_COMPUTER)
 191                 return 0x11; /* computer port */
 192         else if (subdev == chip->num_ports + MTPAV_PIDX_ADAT)
 193                 return 0x63;            /* ADAT */
 194         return 0; /* all ports */
 195 }
 196
 197 static int translate_hwport_to_subdevice(struct mtpav *chip, int hwport)
 198 {
 199         int p;
 200         if (hwport <= 0x00) /* all ports */
 201                 return chip->num_ports + MTPAV_PIDX_BROADCAST;
 202         else if (hwport <= 0x08) { /* single port */
 203                 p = hwport - 1;
 204                 if (p >= chip->num_ports)
 205                         p = 0;
 206                 return p;
 207         } else if (hwport <= 0x10) { /* remote port */
 208                 p = hwport - 0x09 + chip->num_ports;
 209                 if (p >= chip->num_ports * 2)
 210                         p = chip->num_ports;
 211                 return p;
 212         } else if (hwport == 0x11)  /* computer port */
 213                 return chip->num_ports + MTPAV_PIDX_COMPUTER;
 214         else  /* ADAT */
 215                 return chip->num_ports + MTPAV_PIDX_ADAT;
 216 }
 217
 218
 219 /*
 220  */
 221
 222 static u8 snd_mtpav_getreg(struct mtpav *chip, u16 reg)
 223 {
 224         u8 rval = 0;
 225
 226         if (reg == SREG) {
 227                 rval = inb(chip->port + SREG);
 228                 rval = (rval & 0xf8);
 229         } else if (reg == CREG) {
 230                 rval = inb(chip->port + CREG);
 231                 rval = (rval & 0x1c);
 232         }
 233
 234         return rval;
 235 }
 236
 237 /*
 238  */
 239
 240 static inline void snd_mtpav_mputreg(struct mtpav *chip, u16 reg, u8 val)
 241 {
 242         if (reg == DREG || reg == CREG)
 243                 outb(val, chip->port + reg);
 244 }
 245
 246 /*
 247  */
 248
 249 static void snd_mtpav_wait_rfdhi(struct mtpav *chip)
 250 {
 251         int counts = 10000;
 252         u8 sbyte;
 253
 254         sbyte = snd_mtpav_getreg(chip, SREG);
 255         while (!(sbyte & SIGS_RFD) && counts--) {
 256                 sbyte = snd_mtpav_getreg(chip, SREG);
 257                 udelay(10);
 258         }
 259 }
 260
 261 static void snd_mtpav_send_byte(struct mtpav *chip, u8 byte)
 262 {
 263         u8 tcbyt;
 264         u8 clrwrite;
 265         u8 setwrite;
 266
 267         snd_mtpav_wait_rfdhi(chip);
 268
 269         /////////////////
 270
 271         tcbyt = snd_mtpav_getreg(chip, CREG);
 272         clrwrite = tcbyt & (SIGC_WRITE ^ 0xff);
 273         setwrite = tcbyt | SIGC_WRITE;
 274
 275         snd_mtpav_mputreg(chip, DREG, byte);
 276         snd_mtpav_mputreg(chip, CREG, clrwrite);        // clear write bit
 277
 278         snd_mtpav_mputreg(chip, CREG, setwrite);        // set write bit
 279
 280 }
 281
 282
 283 /*
 284  */
 285
 286 /* call this with spin lock held */
 287 static void snd_mtpav_output_port_write(struct mtpav *mtp_card,
 288                                         struct mtpav_port *portp,
 289                                         struct snd_rawmidi_substream *substream)
 290 {
 291         u8 outbyte;
 292
 293         // Get the outbyte first, so we can emulate running status if
 294         // necessary
 295         if (snd_rawmidi_transmit(substream, &outbyte, 1) != 1)
 296                 return;
 297
 298         // send port change command if necessary
 299
 300         if (portp->hwport != mtp_card->outmidihwport) {
 301                 mtp_card->outmidihwport = portp->hwport;
 302
 303                 snd_mtpav_send_byte(mtp_card, 0xf5);
 304                 snd_mtpav_send_byte(mtp_card, portp->hwport);
 305                 /*
 306                 snd_printk(KERN_DEBUG "new outport: 0x%x\n",
 307                            (unsigned int) portp->hwport);
 308                 */
 309                 if (!(outbyte & 0x80) && portp->running_status)
 310                         snd_mtpav_send_byte(mtp_card, portp->running_status);
 311         }
 312
 313         // send data
 314
 315         do {
 316                 if (outbyte & 0x80)
 317                         portp->running_status = outbyte;
 318
 319                 snd_mtpav_send_byte(mtp_card, outbyte);
 320         } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
 321 }
 322
 323 static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream)
 324 {
 325         struct mtpav *mtp_card = substream->rmidi->private_data;
 326         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 327         unsigned long flags;
 328
 329         spin_lock_irqsave(&mtp_card->spinlock, flags);
 330         snd_mtpav_output_port_write(mtp_card, portp, substream);
 331         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 332 }
 333
 334
 335 /*
 336  *      mtpav control
 337  */
 338
 339 static void snd_mtpav_portscan(struct mtpav *chip)      // put mtp into smart routing mode
 340 {
 341         u8 p;
 342
 343         for (p = 0; p < 8; p++) {
 344                 snd_mtpav_send_byte(chip, 0xf5);
 345                 snd_mtpav_send_byte(chip, p);
 346                 snd_mtpav_send_byte(chip, 0xfe);
 347         }
 348 }
 349
 350 /*
 351  */
 352
 353 static int snd_mtpav_input_open(struct snd_rawmidi_substream *substream)
 354 {
 355         struct mtpav *mtp_card = substream->rmidi->private_data;
 356         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 357         unsigned long flags;
 358
 359         spin_lock_irqsave(&mtp_card->spinlock, flags);
 360         portp->mode |= MTPAV_MODE_INPUT_OPENED;
 361         portp->input = substream;
 362         if (mtp_card->share_irq++ == 0)
 363                 snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN | SIGC_WRITE));   // enable pport interrupts
 364         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 365         return 0;
 366 }
 367
 368 /*
 369  */
 370
 371 static int snd_mtpav_input_close(struct snd_rawmidi_substream *substream)
 372 {
 373         struct mtpav *mtp_card = substream->rmidi->private_data;
 374         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 375         unsigned long flags;
 376
 377         spin_lock_irqsave(&mtp_card->spinlock, flags);
 378         portp->mode &= ~MTPAV_MODE_INPUT_OPENED;
 379         portp->input = NULL;
 380         if (--mtp_card->share_irq == 0)
 381                 snd_mtpav_mputreg(mtp_card, CREG, 0);   // disable pport interrupts
 382         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 383         return 0;
 384 }
 385
 386 /*
 387  */
 388
 389 static void snd_mtpav_input_trigger(struct snd_rawmidi_substream *substream, int up)
 390 {
 391         struct mtpav *mtp_card = substream->rmidi->private_data;
 392         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 393         unsigned long flags;
 394
 395         spin_lock_irqsave(&mtp_card->spinlock, flags);
 396         if (up)
 397                 portp->mode |= MTPAV_MODE_INPUT_TRIGGERED;
 398         else
 399                 portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED;
 400         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 401
 402 }
 403
 404
 405 /*
 406  * timer interrupt for outputs
 407  */
 408
 409 static void snd_mtpav_output_timer(unsigned long data)
 410 {
 411         unsigned long flags;
 412         struct mtpav *chip = (struct mtpav *)data;
 413         int p;
 414
 415         spin_lock_irqsave(&chip->spinlock, flags);
 416         /* reprogram timer */
 417         mod_timer(&chip->timer, 1 + jiffies);
 418         /* process each port */
 419         for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
 420                 struct mtpav_port *portp = &chip->ports[p];
 421                 if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
 422                         snd_mtpav_output_port_write(chip, portp, portp->output);
 423         }
 424         spin_unlock_irqrestore(&chip->spinlock, flags);
 425 }
 426
 427 /* spinlock held! */
 428 static void snd_mtpav_add_output_timer(struct mtpav *chip)
 429 {
 430         mod_timer(&chip->timer, 1 + jiffies);
 431 }
 432
 433 /* spinlock held! */
 434 static void snd_mtpav_remove_output_timer(struct mtpav *chip)
 435 {
 436         del_timer(&chip->timer);
 437 }
 438
 439 /*
 440  */
 441
 442 static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
 443 {
 444         struct mtpav *mtp_card = substream->rmidi->private_data;
 445         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 446         unsigned long flags;
 447
 448         spin_lock_irqsave(&mtp_card->spinlock, flags);
 449         portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
 450         portp->output = substream;
 451         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 452         return 0;
 453 };
 454
 455 /*
 456  */
 457
 458 static int snd_mtpav_output_close(struct snd_rawmidi_substream *substream)
 459 {
 460         struct mtpav *mtp_card = substream->rmidi->private_data;
 461         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 462         unsigned long flags;
 463
 464         spin_lock_irqsave(&mtp_card->spinlock, flags);
 465         portp->mode &= ~MTPAV_MODE_OUTPUT_OPENED;
 466         portp->output = NULL;
 467         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 468         return 0;
 469 };
 470
 471 /*
 472  */
 473
 474 static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up)
 475 {
 476         struct mtpav *mtp_card = substream->rmidi->private_data;
 477         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 478         unsigned long flags;
 479
 480         spin_lock_irqsave(&mtp_card->spinlock, flags);
 481         if (up) {
 482                 if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) {
 483                         if (mtp_card->istimer++ == 0)
 484                                 snd_mtpav_add_output_timer(mtp_card);
 485                         portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
 486                 }
 487         } else {
 488                 portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
 489                 if (--mtp_card->istimer == 0)
 490                         snd_mtpav_remove_output_timer(mtp_card);
 491         }
 492         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 493
 494         if (up)
 495                 snd_mtpav_output_write(substream);
 496 }
 497
 498 /*
 499  * midi interrupt for inputs
 500  */
 501
 502 static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte)
 503 {
 504         struct mtpav_port *portp;
 505
 506         if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
 507                 return;
 508
 509         portp = &mcrd->ports[mcrd->inmidiport];
 510         if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED)
 511                 snd_rawmidi_receive(portp->input, &inbyte, 1);
 512 }
 513
 514 static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte)
 515 {
 516         if (inbyte >= 0xf8) {
 517                 /* real-time midi code */
 518                 snd_mtpav_inmidi_process(mcrd, inbyte);
 519                 return;
 520         }
 521
 522         if (mcrd->inmidistate == 0) {   // awaiting command
 523                 if (inbyte == 0xf5)     // MTP port #
 524                         mcrd->inmidistate = 1;
 525                 else
 526                         snd_mtpav_inmidi_process(mcrd, inbyte);
 527         } else if (mcrd->inmidistate) {
 528                 mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
 529                 mcrd->inmidistate = 0;
 530         }
 531 }
 532
 533 static void snd_mtpav_read_bytes(struct mtpav *mcrd)
 534 {
 535         u8 clrread, setread;
 536         u8 mtp_read_byte;
 537         u8 sr, cbyt;
 538         int i;
 539
 540         u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
 541
 542         /* printk(KERN_DEBUG "snd_mtpav_read_bytes() sbyt: 0x%x\n", sbyt); */
 543
 544         if (!(sbyt & SIGS_BYTE))
 545                 return;
 546
 547         cbyt = snd_mtpav_getreg(mcrd, CREG);
 548         clrread = cbyt & (SIGC_READ ^ 0xff);
 549         setread = cbyt | SIGC_READ;
 550
 551         do {
 552
 553                 mtp_read_byte = 0;
 554                 for (i = 0; i < 4; i++) {
 555                         snd_mtpav_mputreg(mcrd, CREG, setread);
 556                         sr = snd_mtpav_getreg(mcrd, SREG);
 557                         snd_mtpav_mputreg(mcrd, CREG, clrread);
 558
 559                         sr &= SIGS_IN0 | SIGS_IN1;
 560                         sr >>= 4;
 561                         mtp_read_byte |= sr << (i * 2);
 562                 }
 563
 564                 snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
 565
 566                 sbyt = snd_mtpav_getreg(mcrd, SREG);
 567
 568         } while (sbyt & SIGS_BYTE);
 569 }
 570
 571 static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id)
 572 {
 573         struct mtpav *mcard = dev_id;
 574
 575         spin_lock(&mcard->spinlock);
 576         snd_mtpav_read_bytes(mcard);
 577         spin_unlock(&mcard->spinlock);
 578         return IRQ_HANDLED;
 579 }
 580
 581 /*
 582  * get ISA resources
 583  */
 584 static int snd_mtpav_get_ISA(struct mtpav *mcard)
 585 {
 586         if ((mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI")) == NULL) {
 587                 snd_printk(KERN_ERR "MTVAP port 0x%lx is busy\n", port);
 588                 return -EBUSY;
 589         }
 590         mcard->port = port;
 591         if (request_irq(irq, snd_mtpav_irqh, 0, "MOTU MTPAV", mcard)) {
 592                 snd_printk(KERN_ERR "MTVAP IRQ %d busy\n", irq);
 593                 return -EBUSY;
 594         }
 595         mcard->irq = irq;
 596         return 0;
 597 }
 598
 599
 600 /*
 601  */
 602
 603 static struct snd_rawmidi_ops snd_mtpav_output = {
 604         .open =         snd_mtpav_output_open,
 605         .close =        snd_mtpav_output_close,
 606         .trigger =      snd_mtpav_output_trigger,
 607 };
 608
 609 static struct snd_rawmidi_ops snd_mtpav_input = {
 610         .open =         snd_mtpav_input_open,
 611         .close =        snd_mtpav_input_close,
 612         .trigger =      snd_mtpav_input_trigger,
 613 };
 614
 615
 616 /*
 617  * get RAWMIDI resources
 618  */
 619
 620 static void snd_mtpav_set_name(struct mtpav *chip,
 621                                struct snd_rawmidi_substream *substream)
 622 {
 623         if (substream->number >= 0 && substream->number < chip->num_ports)
 624                 sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
 625         else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
 626                 sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
 627         else if (substream->number == chip->num_ports * 2)
 628                 strcpy(substream->name, "MTP computer");
 629         else if (substream->number == chip->num_ports * 2 + 1)
 630                 strcpy(substream->name, "MTP ADAT");
 631         else
 632                 strcpy(substream->name, "MTP broadcast");
 633 }
 634
 635 static int snd_mtpav_get_RAWMIDI(struct mtpav *mcard)
 636 {
 637         int rval;
 638         struct snd_rawmidi *rawmidi;
 639         struct snd_rawmidi_substream *substream;
 640         struct list_head *list;
 641
 642         if (hwports < 1)
 643                 hwports = 1;
 644         else if (hwports > 8)
 645                 hwports = 8;
 646         mcard->num_ports = hwports;
 647
 648         if ((rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
 649                                     mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
 650                                     mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
 651                                     &mcard->rmidi)) < 0)
 652                 return rval;
 653         rawmidi = mcard->rmidi;
 654         rawmidi->private_data = mcard;
 655
 656         list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
 657                 substream = list_entry(list, struct snd_rawmidi_substream, list);
 658                 snd_mtpav_set_name(mcard, substream);
 659                 substream->ops = &snd_mtpav_input;
 660         }
 661         list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
 662                 substream = list_entry(list, struct snd_rawmidi_substream, list);
 663                 snd_mtpav_set_name(mcard, substream);
 664                 substream->ops = &snd_mtpav_output;
 665                 mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
 666         }
 667         rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
 668                                SNDRV_RAWMIDI_INFO_DUPLEX;
 669         sprintf(rawmidi->name, "MTP AV MIDI");
 670         return 0;
 671 }
 672
 673 /*
 674  */
 675
 676 static void snd_mtpav_free(struct snd_card *card)
 677 {
 678         struct mtpav *crd = card->private_data;
 679         unsigned long flags;
 680
 681         spin_lock_irqsave(&crd->spinlock, flags);
 682         if (crd->istimer > 0)
 683                 snd_mtpav_remove_output_timer(crd);
 684         spin_unlock_irqrestore(&crd->spinlock, flags);
 685         if (crd->irq >= 0)
 686                 free_irq(crd->irq, (void *)crd);
 687         release_and_free_resource(crd->res_port);
 688 }
 689
 690 /*
 691  */
 692 static int snd_mtpav_probe(struct platform_device *dev)
 693 {
 694         struct snd_card *card;
 695         int err;
 696         struct mtpav *mtp_card;
 697
 698         err = snd_card_new(&dev->dev, index, id, THIS_MODULE,
 699                            sizeof(*mtp_card), &card);
 700         if (err < 0)
 701                 return err;
 702
 703         mtp_card = card->private_data;
 704         spin_lock_init(&mtp_card->spinlock);
 705         mtp_card->card = card;
 706         mtp_card->irq = -1;
 707         mtp_card->share_irq = 0;
 708         mtp_card->inmidistate = 0;
 709         mtp_card->outmidihwport = 0xffffffff;
 710         setup_timer(&mtp_card->timer, snd_mtpav_output_timer,
 711                     (unsigned long) mtp_card);
 712
 713         card->private_free = snd_mtpav_free;
 714
 715         err = snd_mtpav_get_RAWMIDI(mtp_card);
 716         if (err < 0)
 717                 goto __error;
 718
 719         mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
 720
 721         err = snd_mtpav_get_ISA(mtp_card);
 722         if (err < 0)
 723                 goto __error;
 724
 725         strcpy(card->driver, "MTPAV");
 726         strcpy(card->shortname, "MTPAV on parallel port");
 727         snprintf(card->longname, sizeof(card->longname),
 728                  "MTPAV on parallel port at 0x%lx", port);
 729
 730         snd_mtpav_portscan(mtp_card);
 731
 732         err = snd_card_register(mtp_card->card);
 733         if (err < 0)
 734                 goto __error;
 735
 736         platform_set_drvdata(dev, card);
 737         printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
 738         return 0;
 739
 740  __error:
 741         snd_card_free(card);
 742         return err;
 743 }
 744
 745 static int snd_mtpav_remove(struct platform_device *devptr)
 746 {
 747         snd_card_free(platform_get_drvdata(devptr));
 748         return 0;
 749 }
 750
 751 #define SND_MTPAV_DRIVER        "snd_mtpav"
 752
 753 static struct platform_driver snd_mtpav_driver = {
 754         .probe          = snd_mtpav_probe,
 755         .remove         = snd_mtpav_remove,
 756         .driver         = {
 757                 .name   = SND_MTPAV_DRIVER,
 758         },
 759 };
 760
 761 static int __init alsa_card_mtpav_init(void)
 762 {
 763         int err;
 764
 765         if ((err = platform_driver_register(&snd_mtpav_driver)) < 0)
 766                 return err;
 767
 768         device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
 769         if (!IS_ERR(device)) {
 770                 if (platform_get_drvdata(device))
 771                         return 0;
 772                 platform_device_unregister(device);
 773                 err = -ENODEV;
 774         } else
 775                 err = PTR_ERR(device);
 776         platform_driver_unregister(&snd_mtpav_driver);
 777         return err;
 778 }
 779
 780 static void __exit alsa_card_mtpav_exit(void)
 781 {
 782         platform_device_unregister(device);
 783         platform_driver_unregister(&snd_mtpav_driver);
 784 }
 785
 786 module_init(alsa_card_mtpav_init)
 787 module_exit(alsa_card_mtpav_exit)