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 <sound/driver.h>
  54 #include <linux/init.h>
  55 #include <linux/interrupt.h>
  56 #include <linux/slab.h>
  57 #include <linux/ioport.h>
  58 #include <linux/moduleparam.h>
  59 #include <sound/core.h>
  60 #include <sound/initval.h>
  61 #include <sound/rawmidi.h>
  62 #include <linux/delay.h>
  63
  64 #include <asm/io.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 /*
  97  *      defines
  98  */
  99 //#define USE_FAKE_MTP //       don't actually read/write to MTP device (for debugging without an actual unit) (does not work yet)
 100
 101 // parallel port usage masks
 102 #define SIGS_BYTE 0x08
 103 #define SIGS_RFD 0x80
 104 #define SIGS_IRQ 0x40
 105 #define SIGS_IN0 0x10
 106 #define SIGS_IN1 0x20
 107
 108 #define SIGC_WRITE 0x04
 109 #define SIGC_READ 0x08
 110 #define SIGC_INTEN 0x10
 111
 112 #define DREG 0
 113 #define SREG 1
 114 #define CREG 2
 115
 116 //
 117 #define MTPAV_MODE_INPUT_OPENED         0x01
 118 #define MTPAV_MODE_OUTPUT_OPENED        0x02
 119 #define MTPAV_MODE_INPUT_TRIGGERED      0x04
 120 #define MTPAV_MODE_OUTPUT_TRIGGERED     0x08
 121
 122 #define NUMPORTS (0x12+1)
 123
 124
 125 /*
 126  */
 127
 128 typedef struct mtpav_port {
 129         u8 number;
 130         u8 hwport;
 131         u8 mode;
 132         u8 running_status;
 133         snd_rawmidi_substream_t *input;
 134         snd_rawmidi_substream_t *output;
 135 } mtpav_port_t;
 136
 137 typedef struct mtpav {
 138         snd_card_t *card;
 139         unsigned long port;
 140         struct resource *res_port;
 141         int irq;                        /* interrupt (for inputs) */
 142         spinlock_t spinlock;
 143         int share_irq;                  /* number of accesses to input interrupts */
 144         int istimer;                    /* number of accesses to timer interrupts */
 145         struct timer_list timer;        /* timer interrupts for outputs */
 146         snd_rawmidi_t *rmidi;
 147         int num_ports;          /* number of hw ports (1-8) */
 148         mtpav_port_t ports[NUMPORTS];   /* all ports including computer, adat and bc */
 149
 150         u32 inmidiport;         /* selected input midi port */
 151         u32 inmidistate;        /* during midi command 0xf5 */
 152
 153         u32 outmidihwport;      /* selected output midi hw port */
 154 } mtpav_t;
 155
 156
 157 /*
 158  * global instance
 159  * hey, we handle at most only one card..
 160  */
 161 static mtpav_t *mtp_card;
 162
 163 /*
 164  * possible hardware ports (selected by 0xf5 port message)
 165  *      0x00            all ports
 166  *      0x01 .. 0x08    this MTP's ports 1..8
 167  *      0x09 .. 0x10    networked MTP's ports (9..16)
 168  *      0x11            networked MTP's computer port
 169  *      0x63            to ADAT
 170  *
 171  * mappig:
 172  *  subdevice 0 - (X-1)    ports
 173  *            X - (2*X-1)  networked ports
 174  *            X            computer
 175  *            X+1          ADAT
 176  *            X+2          all ports
 177  *
 178  *  where X = chip->num_ports
 179  */
 180
 181 #define MTPAV_PIDX_COMPUTER     0
 182 #define MTPAV_PIDX_ADAT         1
 183 #define MTPAV_PIDX_BROADCAST    2
 184
 185
 186 static int translate_subdevice_to_hwport(mtpav_t *chip, int subdev)
 187 {
 188         if (subdev < 0)
 189                 return 0x01; /* invalid - use port 0 as default */
 190         else if (subdev < chip->num_ports)
 191                 return subdev + 1; /* single mtp port */
 192         else if (subdev < chip->num_ports * 2)
 193                 return subdev - chip->num_ports + 0x09; /* remote port */
 194         else if (subdev == chip->num_ports * 2 + MTPAV_PIDX_COMPUTER)
 195                 return 0x11; /* computer port */
 196         else if (subdev == chip->num_ports + MTPAV_PIDX_ADAT)
 197                 return 0x63;            /* ADAT */
 198         return 0; /* all ports */
 199 }
 200
 201 static int translate_hwport_to_subdevice(mtpav_t *chip, int hwport)
 202 {
 203         int p;
 204         if (hwport <= 0x00) /* all ports */
 205                 return chip->num_ports + MTPAV_PIDX_BROADCAST;
 206         else if (hwport <= 0x08) { /* single port */
 207                 p = hwport - 1;
 208                 if (p >= chip->num_ports)
 209                         p = 0;
 210                 return p;
 211         } else if (hwport <= 0x10) { /* remote port */
 212                 p = hwport - 0x09 + chip->num_ports;
 213                 if (p >= chip->num_ports * 2)
 214                         p = chip->num_ports;
 215                 return p;
 216         } else if (hwport == 0x11)  /* computer port */
 217                 return chip->num_ports + MTPAV_PIDX_COMPUTER;
 218         else  /* ADAT */
 219                 return chip->num_ports + MTPAV_PIDX_ADAT;
 220 }
 221
 222
 223 /*
 224  */
 225
 226 static u8 snd_mtpav_getreg(mtpav_t *chip, u16 reg)
 227 {
 228         u8 rval = 0;
 229
 230         if (reg == SREG) {
 231                 rval = inb(chip->port + SREG);
 232                 rval = (rval & 0xf8);
 233         } else if (reg == CREG) {
 234                 rval = inb(chip->port + CREG);
 235                 rval = (rval & 0x1c);
 236         }
 237
 238         return rval;
 239 }
 240
 241 /*
 242  */
 243
 244 static void snd_mtpav_mputreg(mtpav_t *chip, u16 reg, u8 val)
 245 {
 246         if (reg == DREG) {
 247                 outb(val, chip->port + DREG);
 248         } else if (reg == CREG) {
 249                 outb(val, chip->port + CREG);
 250         }
 251 }
 252
 253 /*
 254  */
 255
 256 static void snd_mtpav_wait_rfdhi(mtpav_t *chip)
 257 {
 258         int counts = 10000;
 259         u8 sbyte;
 260
 261         sbyte = snd_mtpav_getreg(chip, SREG);
 262         while (!(sbyte & SIGS_RFD) && counts--) {
 263                 sbyte = snd_mtpav_getreg(chip, SREG);
 264                 udelay(10);
 265         }
 266 }
 267
 268 static void snd_mtpav_send_byte(mtpav_t *chip, u8 byte)
 269 {
 270         u8 tcbyt;
 271         u8 clrwrite;
 272         u8 setwrite;
 273
 274         snd_mtpav_wait_rfdhi(chip);
 275
 276         /////////////////
 277
 278         tcbyt = snd_mtpav_getreg(chip, CREG);
 279         clrwrite = tcbyt & (SIGC_WRITE ^ 0xff);
 280         setwrite = tcbyt | SIGC_WRITE;
 281
 282         snd_mtpav_mputreg(chip, DREG, byte);
 283         snd_mtpav_mputreg(chip, CREG, clrwrite);        // clear write bit
 284
 285         snd_mtpav_mputreg(chip, CREG, setwrite);        // set write bit
 286
 287 }
 288
 289
 290 /*
 291  */
 292
 293 /* call this with spin lock held */
 294 static void snd_mtpav_output_port_write(mtpav_port_t *port,
 295                                         snd_rawmidi_substream_t *substream)
 296 {
 297         u8 outbyte;
 298
 299         // Get the outbyte first, so we can emulate running status if
 300         // necessary
 301         if (snd_rawmidi_transmit(substream, &outbyte, 1) != 1)
 302                 return;
 303
 304         // send port change command if necessary
 305
 306         if (port->hwport != mtp_card->outmidihwport) {
 307                 mtp_card->outmidihwport = port->hwport;
 308
 309                 snd_mtpav_send_byte(mtp_card, 0xf5);
 310                 snd_mtpav_send_byte(mtp_card, port->hwport);
 311                 //snd_printk("new outport: 0x%x\n", (unsigned int) port->hwport);
 312
 313                 if (!(outbyte & 0x80) && port->running_status)
 314                         snd_mtpav_send_byte(mtp_card, port->running_status);
 315         }
 316
 317         // send data
 318
 319         do {
 320                 if (outbyte & 0x80)
 321                         port->running_status = outbyte;
 322
 323                 snd_mtpav_send_byte(mtp_card, outbyte);
 324         } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
 325 }
 326
 327 static void snd_mtpav_output_write(snd_rawmidi_substream_t * substream)
 328 {
 329         mtpav_port_t *port = &mtp_card->ports[substream->number];
 330         unsigned long flags;
 331
 332         spin_lock_irqsave(&mtp_card->spinlock, flags);
 333         snd_mtpav_output_port_write(port, substream);
 334         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 335 }
 336
 337
 338 /*
 339  *      mtpav control
 340  */
 341
 342 static void snd_mtpav_portscan(mtpav_t *chip)   // put mtp into smart routing mode
 343 {
 344         u8 p;
 345
 346         for (p = 0; p < 8; p++) {
 347                 snd_mtpav_send_byte(chip, 0xf5);
 348                 snd_mtpav_send_byte(chip, p);
 349                 snd_mtpav_send_byte(chip, 0xfe);
 350         }
 351 }
 352
 353 /*
 354  */
 355
 356 static int snd_mtpav_input_open(snd_rawmidi_substream_t * substream)
 357 {
 358         unsigned long flags;
 359         mtpav_port_t *portp = &mtp_card->ports[substream->number];
 360
 361         //printk("mtpav port: %d opened\n", (int) substream->number);
 362         spin_lock_irqsave(&mtp_card->spinlock, flags);
 363         portp->mode |= MTPAV_MODE_INPUT_OPENED;
 364         portp->input = substream;
 365         if (mtp_card->share_irq++ == 0)
 366                 snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN | SIGC_WRITE));   // enable pport interrupts
 367         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 368         return 0;
 369 }
 370
 371 /*
 372  */
 373
 374 static int snd_mtpav_input_close(snd_rawmidi_substream_t *substream)
 375 {
 376         unsigned long flags;
 377         mtpav_port_t *portp = &mtp_card->ports[substream->number];
 378
 379         //printk("mtpav port: %d closed\n", (int) portp);
 380
 381         spin_lock_irqsave(&mtp_card->spinlock, flags);
 382
 383         portp->mode &= (~MTPAV_MODE_INPUT_OPENED);
 384         portp->input = NULL;
 385         if (--mtp_card->share_irq == 0)
 386                 snd_mtpav_mputreg(mtp_card, CREG, 0);   // disable pport interrupts
 387
 388         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 389         return 0;
 390 }
 391
 392 /*
 393  */
 394
 395 static void snd_mtpav_input_trigger(snd_rawmidi_substream_t * substream, int up)
 396 {
 397         unsigned long flags;
 398         mtpav_port_t *portp = &mtp_card->ports[substream->number];
 399
 400         spin_lock_irqsave(&mtp_card->spinlock, flags);
 401         if (up)
 402                 portp->mode |= MTPAV_MODE_INPUT_TRIGGERED;
 403         else
 404                 portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED;
 405         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 406
 407 }
 408
 409
 410 /*
 411  * timer interrupt for outputs
 412  */
 413
 414 static void snd_mtpav_output_timer(unsigned long data)
 415 {
 416         unsigned long flags;
 417         mtpav_t *chip = (mtpav_t *)data;
 418         int p;
 419
 420         spin_lock_irqsave(&chip->spinlock, flags);
 421         /* reprogram timer */
 422         chip->timer.expires = 1 + jiffies;
 423         add_timer(&chip->timer);
 424         /* process each port */
 425         for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
 426                 mtpav_port_t *portp = &mtp_card->ports[p];
 427                 if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
 428                         snd_mtpav_output_port_write(portp, portp->output);
 429         }
 430         spin_unlock_irqrestore(&chip->spinlock, flags);
 431 }
 432
 433 /* spinlock held! */
 434 static void snd_mtpav_add_output_timer(mtpav_t *chip)
 435 {
 436         init_timer(&chip->timer);
 437         chip->timer.function = snd_mtpav_output_timer;
 438         chip->timer.data = (unsigned long) mtp_card;
 439         chip->timer.expires = 1 + jiffies;
 440         add_timer(&chip->timer);
 441 }
 442
 443 /* spinlock held! */
 444 static void snd_mtpav_remove_output_timer(mtpav_t *chip)
 445 {
 446         del_timer(&chip->timer);
 447 }
 448
 449 /*
 450  */
 451
 452 static int snd_mtpav_output_open(snd_rawmidi_substream_t * substream)
 453 {
 454         unsigned long flags;
 455         mtpav_port_t *portp = &mtp_card->ports[substream->number];
 456
 457         spin_lock_irqsave(&mtp_card->spinlock, flags);
 458         portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
 459         portp->output = substream;
 460         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 461         return 0;
 462 };
 463
 464 /*
 465  */
 466
 467 static int snd_mtpav_output_close(snd_rawmidi_substream_t * substream)
 468 {
 469         unsigned long flags;
 470         mtpav_port_t *portp = &mtp_card->ports[substream->number];
 471
 472         spin_lock_irqsave(&mtp_card->spinlock, flags);
 473         portp->mode &= (~MTPAV_MODE_OUTPUT_OPENED);
 474         portp->output = NULL;
 475         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 476         return 0;
 477 };
 478
 479 /*
 480  */
 481
 482 static void snd_mtpav_output_trigger(snd_rawmidi_substream_t * substream, int up)
 483 {
 484         unsigned long flags;
 485         mtpav_port_t *portp = &mtp_card->ports[substream->number];
 486
 487         spin_lock_irqsave(&mtp_card->spinlock, flags);
 488         if (up) {
 489                 if (! (portp->mode  & MTPAV_MODE_OUTPUT_TRIGGERED)) {
 490                         if (mtp_card->istimer++ == 0)
 491                                 snd_mtpav_add_output_timer(mtp_card);
 492                         portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
 493                 }
 494         } else {
 495                 portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
 496                 if (--mtp_card->istimer == 0)
 497                         snd_mtpav_remove_output_timer(mtp_card);
 498         }
 499         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 500
 501         if (up)
 502                 snd_mtpav_output_write(substream);
 503 }
 504
 505 /*
 506  * midi interrupt for inputs
 507  */
 508
 509 static void snd_mtpav_inmidi_process(mtpav_t *mcrd, u8 inbyte)
 510 {
 511         mtpav_port_t *portp;
 512
 513         if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
 514                 return;
 515
 516         portp = &mcrd->ports[mcrd->inmidiport];
 517         if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED) {
 518                 snd_rawmidi_receive(portp->input, &inbyte, 1);
 519         }
 520 }
 521
 522 static void snd_mtpav_inmidi_h(mtpav_t * mcrd, u8 inbyte)
 523 {
 524         snd_assert(mcrd, return);
 525
 526         if (inbyte >= 0xf8) {
 527                 /* real-time midi code */
 528                 snd_mtpav_inmidi_process(mcrd, inbyte);
 529                 return;
 530         }
 531
 532         if (mcrd->inmidistate == 0) {   // awaiting command
 533                 if (inbyte == 0xf5)     // MTP port #
 534                         mcrd->inmidistate = 1;
 535                 else
 536                         snd_mtpav_inmidi_process(mcrd, inbyte);
 537         } else if (mcrd->inmidistate) {
 538                 mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
 539                 mcrd->inmidistate = 0;
 540         }
 541 }
 542
 543 static void snd_mtpav_read_bytes(mtpav_t * mcrd)
 544 {
 545         u8 clrread, setread;
 546         u8 mtp_read_byte;
 547         u8 sr, cbyt;
 548         int i;
 549
 550         u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
 551
 552         //printk("snd_mtpav_read_bytes() sbyt: 0x%x\n", sbyt);
 553
 554         if (!(sbyt & SIGS_BYTE))
 555                 return;
 556
 557         cbyt = snd_mtpav_getreg(mcrd, CREG);
 558         clrread = cbyt & (SIGC_READ ^ 0xff);
 559         setread = cbyt | SIGC_READ;
 560
 561         do {
 562
 563                 mtp_read_byte = 0;
 564                 for (i = 0; i < 4; i++) {
 565                         snd_mtpav_mputreg(mcrd, CREG, setread);
 566                         sr = snd_mtpav_getreg(mcrd, SREG);
 567                         snd_mtpav_mputreg(mcrd, CREG, clrread);
 568
 569                         sr &= SIGS_IN0 | SIGS_IN1;
 570                         sr >>= 4;
 571                         mtp_read_byte |= sr << (i * 2);
 572                 }
 573
 574                 snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
 575
 576                 sbyt = snd_mtpav_getreg(mcrd, SREG);
 577
 578         } while (sbyt & SIGS_BYTE);
 579 }
 580
 581 static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id, struct pt_regs *regs)
 582 {
 583         mtpav_t *mcard = dev_id;
 584
 585         //printk("irqh()\n");
 586         spin_lock(&mcard->spinlock);
 587         snd_mtpav_read_bytes(mcard);
 588         spin_unlock(&mcard->spinlock);
 589         return IRQ_HANDLED;
 590 }
 591
 592 /*
 593  * get ISA resources
 594  */
 595 static int snd_mtpav_get_ISA(mtpav_t * mcard)
 596 {
 597         if ((mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI")) == NULL) {
 598                 snd_printk("MTVAP port 0x%lx is busy\n", port);
 599                 return -EBUSY;
 600         }
 601         mcard->port = port;
 602         if (request_irq(irq, snd_mtpav_irqh, SA_INTERRUPT, "MOTU MTPAV", (void *)mcard)) {
 603                 snd_printk("MTVAP IRQ %d busy\n", irq);
 604                 return -EBUSY;
 605         }
 606         mcard->irq = irq;
 607         return 0;
 608 }
 609
 610
 611 /*
 612  */
 613
 614 static snd_rawmidi_ops_t snd_mtpav_output = {
 615         .open =         snd_mtpav_output_open,
 616         .close =        snd_mtpav_output_close,
 617         .trigger =      snd_mtpav_output_trigger,
 618 };
 619
 620 static snd_rawmidi_ops_t snd_mtpav_input = {
 621         .open =         snd_mtpav_input_open,
 622         .close =        snd_mtpav_input_close,
 623         .trigger =      snd_mtpav_input_trigger,
 624 };
 625
 626
 627 /*
 628  * get RAWMIDI resources
 629  */
 630
 631 static void snd_mtpav_set_name(mtpav_t *chip, snd_rawmidi_substream_t *substream)
 632 {
 633         if (substream->number >= 0 && substream->number < chip->num_ports)
 634                 sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
 635         else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
 636                 sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
 637         else if (substream->number == chip->num_ports * 2)
 638                 strcpy(substream->name, "MTP computer");
 639         else if (substream->number == chip->num_ports * 2 + 1)
 640                 strcpy(substream->name, "MTP ADAT");
 641         else
 642                 strcpy(substream->name, "MTP broadcast");
 643 }
 644
 645 static int snd_mtpav_get_RAWMIDI(mtpav_t * mcard)
 646 {
 647         int rval = 0;
 648         snd_rawmidi_t *rawmidi;
 649         snd_rawmidi_substream_t *substream;
 650         struct list_head *list;
 651
 652         //printk("entering snd_mtpav_get_RAWMIDI\n");
 653
 654         if (hwports < 1)
 655                 mcard->num_ports = 1;
 656         else if (hwports > 8)
 657                 mcard->num_ports = 8;
 658         else
 659                 mcard->num_ports = hwports;
 660
 661         if ((rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
 662                                     mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
 663                                     mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
 664                                     &mcard->rmidi)) < 0)
 665                 return rval;
 666         rawmidi = mcard->rmidi;
 667
 668         list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
 669                 substream = list_entry(list, snd_rawmidi_substream_t, list);
 670                 snd_mtpav_set_name(mcard, substream);
 671                 substream->ops = &snd_mtpav_input;
 672         }
 673         list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
 674                 substream = list_entry(list, snd_rawmidi_substream_t, list);
 675                 snd_mtpav_set_name(mcard, substream);
 676                 substream->ops = &snd_mtpav_output;
 677                 mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
 678         }
 679         rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
 680                                SNDRV_RAWMIDI_INFO_DUPLEX;
 681         sprintf(rawmidi->name, "MTP AV MIDI");
 682         //printk("exiting snd_mtpav_get_RAWMIDI() \n");
 683         return 0;
 684 }
 685
 686 /*
 687  */
 688
 689 static mtpav_t *new_mtpav(void)
 690 {
 691         mtpav_t *ncrd = kzalloc(sizeof(*ncrd), GFP_KERNEL);
 692         if (ncrd != NULL) {
 693                 spin_lock_init(&ncrd->spinlock);
 694
 695                 init_timer(&ncrd->timer);
 696                 ncrd->card = NULL;
 697                 ncrd->irq = -1;
 698                 ncrd->share_irq = 0;
 699
 700                 ncrd->inmidiport = 0xffffffff;
 701                 ncrd->inmidistate = 0;
 702                 ncrd->outmidihwport = 0xffffffff;
 703         }
 704         return ncrd;
 705 }
 706
 707 /*
 708  */
 709
 710 static void free_mtpav(mtpav_t * crd)
 711 {
 712         unsigned long flags;
 713
 714         spin_lock_irqsave(&crd->spinlock, flags);
 715         if (crd->istimer > 0)
 716                 snd_mtpav_remove_output_timer(crd);
 717         spin_unlock_irqrestore(&crd->spinlock, flags);
 718         if (crd->irq >= 0)
 719                 free_irq(crd->irq, (void *)crd);
 720         if (crd->res_port) {
 721                 release_resource(crd->res_port);
 722                 kfree_nocheck(crd->res_port);
 723         }
 724         kfree(crd);
 725 }
 726
 727 /*
 728  */
 729
 730 static int __init alsa_card_mtpav_init(void)
 731 {
 732         int err = 0;
 733         char longname_buffer[80];
 734
 735         mtp_card = new_mtpav();
 736         if (mtp_card == NULL)
 737                 return -ENOMEM;
 738
 739         mtp_card->card = snd_card_new(index, id, THIS_MODULE, 0);
 740         if (mtp_card->card == NULL) {
 741                 free_mtpav(mtp_card);
 742                 return -ENOMEM;
 743         }
 744
 745         err = snd_mtpav_get_ISA(mtp_card);
 746         //printk("snd_mtpav_get_ISA returned: %d\n", err);
 747         if (err < 0)
 748                 goto __error;
 749
 750         strcpy(mtp_card->card->driver, "MTPAV");
 751         strcpy(mtp_card->card->shortname, "MTPAV on parallel port");
 752         memset(longname_buffer, 0, sizeof(longname_buffer));
 753         sprintf(longname_buffer, "MTPAV on parallel port at");
 754
 755         err = snd_mtpav_get_RAWMIDI(mtp_card);
 756         //snd_printk("snd_mtapv_get_RAWMIDI returned: %d\n", err);
 757         if (err < 0)
 758                 goto __error;
 759
 760         if ((err = snd_card_set_generic_dev(mtp_card->card)) < 0)
 761                 goto __error;
 762
 763         err = snd_card_register(mtp_card->card);        // don't snd_card_register until AFTER all cards reources done!
 764
 765         //printk("snd_card_register returned %d\n", err);
 766         if (err < 0)
 767                 goto __error;
 768
 769
 770         snd_mtpav_portscan(mtp_card);
 771
 772         printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
 773
 774         return 0;
 775
 776       __error:
 777         snd_card_free(mtp_card->card);
 778         free_mtpav(mtp_card);
 779         return err;
 780 }
 781
 782 /*
 783  */
 784
 785 static void __exit alsa_card_mtpav_exit(void)
 786 {
 787         if (mtp_card == NULL)
 788                 return;
 789         if (mtp_card->card)
 790                 snd_card_free(mtp_card->card);
 791         free_mtpav(mtp_card);
 792 }
 793
 794 /*
 795  */
 796
 797 module_init(alsa_card_mtpav_init)
 798 module_exit(alsa_card_mtpav_exit)