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/err.h>
  56 #include <linux/platform_device.h>
  57 #include <linux/ioport.h>
  58 #include <linux/io.h>
  59 #include <linux/moduleparam.h>
  60 #include <sound/core.h>
  61 #include <sound/initval.h>
  62 #include <sound/rawmidi.h>
  63 #include <linux/delay.h>
  64
  65 /*
  66  *      globals
  67  */
  68 MODULE_AUTHOR("Michael T. Mayers");
  69 MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI");
  70 MODULE_LICENSE("GPL");
  71 MODULE_SUPPORTED_DEVICE("{{MOTU,MidiTimePiece AV multiport MIDI}}");
  72
  73 // io resources
  74 #define MTPAV_IOBASE            0x378
  75 #define MTPAV_IRQ               7
  76 #define MTPAV_MAX_PORTS         8
  77
  78 static int index = SNDRV_DEFAULT_IDX1;
  79 static char *id = SNDRV_DEFAULT_STR1;
  80 static long port = MTPAV_IOBASE;        /* 0x378, 0x278 */
  81 static int irq = MTPAV_IRQ;             /* 7, 5 */
  82 static int hwports = MTPAV_MAX_PORTS;   /* use hardware ports 1-8 */
  83
  84 module_param(index, int, 0444);
  85 MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
  86 module_param(id, charp, 0444);
  87 MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
  88 module_param(port, long, 0444);
  89 MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
  90 module_param(irq, int, 0444);
  91 MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
  92 module_param(hwports, int, 0444);
  93 MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
  94
  95 static struct platform_device *device;
  96
  97 /*
  98  *      defines
  99  */
 100 //#define USE_FAKE_MTP //       don't actually read/write to MTP device (for debugging without an actual unit) (does not work yet)
 101
 102 // parallel port usage masks
 103 #define SIGS_BYTE 0x08
 104 #define SIGS_RFD 0x80
 105 #define SIGS_IRQ 0x40
 106 #define SIGS_IN0 0x10
 107 #define SIGS_IN1 0x20
 108
 109 #define SIGC_WRITE 0x04
 110 #define SIGC_READ 0x08
 111 #define SIGC_INTEN 0x10
 112
 113 #define DREG 0
 114 #define SREG 1
 115 #define CREG 2
 116
 117 //
 118 #define MTPAV_MODE_INPUT_OPENED         0x01
 119 #define MTPAV_MODE_OUTPUT_OPENED        0x02
 120 #define MTPAV_MODE_INPUT_TRIGGERED      0x04
 121 #define MTPAV_MODE_OUTPUT_TRIGGERED     0x08
 122
 123 #define NUMPORTS (0x12+1)
 124
 125
 126 /*
 127  */
 128
 129 struct mtpav_port {
 130         u8 number;
 131         u8 hwport;
 132         u8 mode;
 133         u8 running_status;
 134         struct snd_rawmidi_substream *input;
 135         struct snd_rawmidi_substream *output;
 136 };
 137
 138 struct mtpav {
 139         struct snd_card *card;
 140         unsigned long port;
 141         struct resource *res_port;
 142         int irq;                        /* interrupt (for inputs) */
 143         spinlock_t spinlock;
 144         int share_irq;                  /* number of accesses to input interrupts */
 145         int istimer;                    /* number of accesses to timer interrupts */
 146         struct timer_list timer;        /* timer interrupts for outputs */
 147         struct snd_rawmidi *rmidi;
 148         int num_ports;          /* number of hw ports (1-8) */
 149         struct mtpav_port ports[NUMPORTS];      /* all ports including computer, adat and bc */
 150
 151         u32 inmidiport;         /* selected input midi port */
 152         u32 inmidistate;        /* during midi command 0xf5 */
 153
 154         u32 outmidihwport;      /* selected output midi hw port */
 155 };
 156
 157
 158 /*
 159  * possible hardware ports (selected by 0xf5 port message)
 160  *      0x00            all ports
 161  *      0x01 .. 0x08    this MTP's ports 1..8
 162  *      0x09 .. 0x10    networked MTP's ports (9..16)
 163  *      0x11            networked MTP's computer port
 164  *      0x63            to ADAT
 165  *
 166  * mappig:
 167  *  subdevice 0 - (X-1)    ports
 168  *            X - (2*X-1)  networked ports
 169  *            X            computer
 170  *            X+1          ADAT
 171  *            X+2          all ports
 172  *
 173  *  where X = chip->num_ports
 174  */
 175
 176 #define MTPAV_PIDX_COMPUTER     0
 177 #define MTPAV_PIDX_ADAT         1
 178 #define MTPAV_PIDX_BROADCAST    2
 179
 180
 181 static int translate_subdevice_to_hwport(struct mtpav *chip, int subdev)
 182 {
 183         if (subdev < 0)
 184                 return 0x01; /* invalid - use port 0 as default */
 185         else if (subdev < chip->num_ports)
 186                 return subdev + 1; /* single mtp port */
 187         else if (subdev < chip->num_ports * 2)
 188                 return subdev - chip->num_ports + 0x09; /* remote port */
 189         else if (subdev == chip->num_ports * 2 + MTPAV_PIDX_COMPUTER)
 190                 return 0x11; /* computer port */
 191         else if (subdev == chip->num_ports + MTPAV_PIDX_ADAT)
 192                 return 0x63;            /* ADAT */
 193         return 0; /* all ports */
 194 }
 195
 196 static int translate_hwport_to_subdevice(struct mtpav *chip, int hwport)
 197 {
 198         int p;
 199         if (hwport <= 0x00) /* all ports */
 200                 return chip->num_ports + MTPAV_PIDX_BROADCAST;
 201         else if (hwport <= 0x08) { /* single port */
 202                 p = hwport - 1;
 203                 if (p >= chip->num_ports)
 204                         p = 0;
 205                 return p;
 206         } else if (hwport <= 0x10) { /* remote port */
 207                 p = hwport - 0x09 + chip->num_ports;
 208                 if (p >= chip->num_ports * 2)
 209                         p = chip->num_ports;
 210                 return p;
 211         } else if (hwport == 0x11)  /* computer port */
 212                 return chip->num_ports + MTPAV_PIDX_COMPUTER;
 213         else  /* ADAT */
 214                 return chip->num_ports + MTPAV_PIDX_ADAT;
 215 }
 216
 217
 218 /*
 219  */
 220
 221 static u8 snd_mtpav_getreg(struct mtpav *chip, u16 reg)
 222 {
 223         u8 rval = 0;
 224
 225         if (reg == SREG) {
 226                 rval = inb(chip->port + SREG);
 227                 rval = (rval & 0xf8);
 228         } else if (reg == CREG) {
 229                 rval = inb(chip->port + CREG);
 230                 rval = (rval & 0x1c);
 231         }
 232
 233         return rval;
 234 }
 235
 236 /*
 237  */
 238
 239 static inline void snd_mtpav_mputreg(struct mtpav *chip, u16 reg, u8 val)
 240 {
 241         if (reg == DREG || reg == CREG)
 242                 outb(val, chip->port + reg);
 243 }
 244
 245 /*
 246  */
 247
 248 static void snd_mtpav_wait_rfdhi(struct mtpav *chip)
 249 {
 250         int counts = 10000;
 251         u8 sbyte;
 252
 253         sbyte = snd_mtpav_getreg(chip, SREG);
 254         while (!(sbyte & SIGS_RFD) && counts--) {
 255                 sbyte = snd_mtpav_getreg(chip, SREG);
 256                 udelay(10);
 257         }
 258 }
 259
 260 static void snd_mtpav_send_byte(struct mtpav *chip, u8 byte)
 261 {
 262         u8 tcbyt;
 263         u8 clrwrite;
 264         u8 setwrite;
 265
 266         snd_mtpav_wait_rfdhi(chip);
 267
 268         /////////////////
 269
 270         tcbyt = snd_mtpav_getreg(chip, CREG);
 271         clrwrite = tcbyt & (SIGC_WRITE ^ 0xff);
 272         setwrite = tcbyt | SIGC_WRITE;
 273
 274         snd_mtpav_mputreg(chip, DREG, byte);
 275         snd_mtpav_mputreg(chip, CREG, clrwrite);        // clear write bit
 276
 277         snd_mtpav_mputreg(chip, CREG, setwrite);        // set write bit
 278
 279 }
 280
 281
 282 /*
 283  */
 284
 285 /* call this with spin lock held */
 286 static void snd_mtpav_output_port_write(struct mtpav *mtp_card,
 287                                         struct mtpav_port *portp,
 288                                         struct snd_rawmidi_substream *substream)
 289 {
 290         u8 outbyte;
 291
 292         // Get the outbyte first, so we can emulate running status if
 293         // necessary
 294         if (snd_rawmidi_transmit(substream, &outbyte, 1) != 1)
 295                 return;
 296
 297         // send port change command if necessary
 298
 299         if (portp->hwport != mtp_card->outmidihwport) {
 300                 mtp_card->outmidihwport = portp->hwport;
 301
 302                 snd_mtpav_send_byte(mtp_card, 0xf5);
 303                 snd_mtpav_send_byte(mtp_card, portp->hwport);
 304                 /*
 305                 snd_printk(KERN_DEBUG "new outport: 0x%x\n",
 306                            (unsigned int) portp->hwport);
 307                 */
 308                 if (!(outbyte & 0x80) && portp->running_status)
 309                         snd_mtpav_send_byte(mtp_card, portp->running_status);
 310         }
 311
 312         // send data
 313
 314         do {
 315                 if (outbyte & 0x80)
 316                         portp->running_status = outbyte;
 317
 318                 snd_mtpav_send_byte(mtp_card, outbyte);
 319         } while (snd_rawmidi_transmit(substream, &outbyte, 1) == 1);
 320 }
 321
 322 static void snd_mtpav_output_write(struct snd_rawmidi_substream *substream)
 323 {
 324         struct mtpav *mtp_card = substream->rmidi->private_data;
 325         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 326         unsigned long flags;
 327
 328         spin_lock_irqsave(&mtp_card->spinlock, flags);
 329         snd_mtpav_output_port_write(mtp_card, portp, substream);
 330         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 331 }
 332
 333
 334 /*
 335  *      mtpav control
 336  */
 337
 338 static void snd_mtpav_portscan(struct mtpav *chip)      // put mtp into smart routing mode
 339 {
 340         u8 p;
 341
 342         for (p = 0; p < 8; p++) {
 343                 snd_mtpav_send_byte(chip, 0xf5);
 344                 snd_mtpav_send_byte(chip, p);
 345                 snd_mtpav_send_byte(chip, 0xfe);
 346         }
 347 }
 348
 349 /*
 350  */
 351
 352 static int snd_mtpav_input_open(struct snd_rawmidi_substream *substream)
 353 {
 354         struct mtpav *mtp_card = substream->rmidi->private_data;
 355         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 356         unsigned long flags;
 357
 358         spin_lock_irqsave(&mtp_card->spinlock, flags);
 359         portp->mode |= MTPAV_MODE_INPUT_OPENED;
 360         portp->input = substream;
 361         if (mtp_card->share_irq++ == 0)
 362                 snd_mtpav_mputreg(mtp_card, CREG, (SIGC_INTEN | SIGC_WRITE));   // enable pport interrupts
 363         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 364         return 0;
 365 }
 366
 367 /*
 368  */
 369
 370 static int snd_mtpav_input_close(struct snd_rawmidi_substream *substream)
 371 {
 372         struct mtpav *mtp_card = substream->rmidi->private_data;
 373         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 374         unsigned long flags;
 375
 376         spin_lock_irqsave(&mtp_card->spinlock, flags);
 377         portp->mode &= ~MTPAV_MODE_INPUT_OPENED;
 378         portp->input = NULL;
 379         if (--mtp_card->share_irq == 0)
 380                 snd_mtpav_mputreg(mtp_card, CREG, 0);   // disable pport interrupts
 381         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 382         return 0;
 383 }
 384
 385 /*
 386  */
 387
 388 static void snd_mtpav_input_trigger(struct snd_rawmidi_substream *substream, int up)
 389 {
 390         struct mtpav *mtp_card = substream->rmidi->private_data;
 391         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 392         unsigned long flags;
 393
 394         spin_lock_irqsave(&mtp_card->spinlock, flags);
 395         if (up)
 396                 portp->mode |= MTPAV_MODE_INPUT_TRIGGERED;
 397         else
 398                 portp->mode &= ~MTPAV_MODE_INPUT_TRIGGERED;
 399         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 400
 401 }
 402
 403
 404 /*
 405  * timer interrupt for outputs
 406  */
 407
 408 static void snd_mtpav_output_timer(unsigned long data)
 409 {
 410         unsigned long flags;
 411         struct mtpav *chip = (struct mtpav *)data;
 412         int p;
 413
 414         spin_lock_irqsave(&chip->spinlock, flags);
 415         /* reprogram timer */
 416         chip->timer.expires = 1 + jiffies;
 417         add_timer(&chip->timer);
 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         chip->timer.expires = 1 + jiffies;
 431         add_timer(&chip->timer);
 432 }
 433
 434 /* spinlock held! */
 435 static void snd_mtpav_remove_output_timer(struct mtpav *chip)
 436 {
 437         del_timer(&chip->timer);
 438 }
 439
 440 /*
 441  */
 442
 443 static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
 444 {
 445         struct mtpav *mtp_card = substream->rmidi->private_data;
 446         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 447         unsigned long flags;
 448
 449         spin_lock_irqsave(&mtp_card->spinlock, flags);
 450         portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
 451         portp->output = substream;
 452         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 453         return 0;
 454 };
 455
 456 /*
 457  */
 458
 459 static int snd_mtpav_output_close(struct snd_rawmidi_substream *substream)
 460 {
 461         struct mtpav *mtp_card = substream->rmidi->private_data;
 462         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 463         unsigned long flags;
 464
 465         spin_lock_irqsave(&mtp_card->spinlock, flags);
 466         portp->mode &= ~MTPAV_MODE_OUTPUT_OPENED;
 467         portp->output = NULL;
 468         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 469         return 0;
 470 };
 471
 472 /*
 473  */
 474
 475 static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up)
 476 {
 477         struct mtpav *mtp_card = substream->rmidi->private_data;
 478         struct mtpav_port *portp = &mtp_card->ports[substream->number];
 479         unsigned long flags;
 480
 481         spin_lock_irqsave(&mtp_card->spinlock, flags);
 482         if (up) {
 483                 if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) {
 484                         if (mtp_card->istimer++ == 0)
 485                                 snd_mtpav_add_output_timer(mtp_card);
 486                         portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
 487                 }
 488         } else {
 489                 portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
 490                 if (--mtp_card->istimer == 0)
 491                         snd_mtpav_remove_output_timer(mtp_card);
 492         }
 493         spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 494
 495         if (up)
 496                 snd_mtpav_output_write(substream);
 497 }
 498
 499 /*
 500  * midi interrupt for inputs
 501  */
 502
 503 static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte)
 504 {
 505         struct mtpav_port *portp;
 506
 507         if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
 508                 return;
 509
 510         portp = &mcrd->ports[mcrd->inmidiport];
 511         if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED)
 512                 snd_rawmidi_receive(portp->input, &inbyte, 1);
 513 }
 514
 515 static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte)
 516 {
 517         if (inbyte >= 0xf8) {
 518                 /* real-time midi code */
 519                 snd_mtpav_inmidi_process(mcrd, inbyte);
 520                 return;
 521         }
 522
 523         if (mcrd->inmidistate == 0) {   // awaiting command
 524                 if (inbyte == 0xf5)     // MTP port #
 525                         mcrd->inmidistate = 1;
 526                 else
 527                         snd_mtpav_inmidi_process(mcrd, inbyte);
 528         } else if (mcrd->inmidistate) {
 529                 mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
 530                 mcrd->inmidistate = 0;
 531         }
 532 }
 533
 534 static void snd_mtpav_read_bytes(struct mtpav *mcrd)
 535 {
 536         u8 clrread, setread;
 537         u8 mtp_read_byte;
 538         u8 sr, cbyt;
 539         int i;
 540
 541         u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
 542
 543         /* printk(KERN_DEBUG "snd_mtpav_read_bytes() sbyt: 0x%x\n", sbyt); */
 544
 545         if (!(sbyt & SIGS_BYTE))
 546                 return;
 547
 548         cbyt = snd_mtpav_getreg(mcrd, CREG);
 549         clrread = cbyt & (SIGC_READ ^ 0xff);
 550         setread = cbyt | SIGC_READ;
 551
 552         do {
 553
 554                 mtp_read_byte = 0;
 555                 for (i = 0; i < 4; i++) {
 556                         snd_mtpav_mputreg(mcrd, CREG, setread);
 557                         sr = snd_mtpav_getreg(mcrd, SREG);
 558                         snd_mtpav_mputreg(mcrd, CREG, clrread);
 559
 560                         sr &= SIGS_IN0 | SIGS_IN1;
 561                         sr >>= 4;
 562                         mtp_read_byte |= sr << (i * 2);
 563                 }
 564
 565                 snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
 566
 567                 sbyt = snd_mtpav_getreg(mcrd, SREG);
 568
 569         } while (sbyt & SIGS_BYTE);
 570 }
 571
 572 static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id)
 573 {
 574         struct mtpav *mcard = dev_id;
 575
 576         spin_lock(&mcard->spinlock);
 577         snd_mtpav_read_bytes(mcard);
 578         spin_unlock(&mcard->spinlock);
 579         return IRQ_HANDLED;
 580 }
 581
 582 /*
 583  * get ISA resources
 584  */
 585 static int __devinit snd_mtpav_get_ISA(struct mtpav * mcard)
 586 {
 587         if ((mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI")) == NULL) {
 588                 snd_printk(KERN_ERR "MTVAP port 0x%lx is busy\n", port);
 589                 return -EBUSY;
 590         }
 591         mcard->port = port;
 592         if (request_irq(irq, snd_mtpav_irqh, IRQF_DISABLED, "MOTU MTPAV", mcard)) {
 593                 snd_printk(KERN_ERR "MTVAP IRQ %d busy\n", irq);
 594                 return -EBUSY;
 595         }
 596         mcard->irq = irq;
 597         return 0;
 598 }
 599
 600
 601 /*
 602  */
 603
 604 static struct snd_rawmidi_ops snd_mtpav_output = {
 605         .open =         snd_mtpav_output_open,
 606         .close =        snd_mtpav_output_close,
 607         .trigger =      snd_mtpav_output_trigger,
 608 };
 609
 610 static struct snd_rawmidi_ops snd_mtpav_input = {
 611         .open =         snd_mtpav_input_open,
 612         .close =        snd_mtpav_input_close,
 613         .trigger =      snd_mtpav_input_trigger,
 614 };
 615
 616
 617 /*
 618  * get RAWMIDI resources
 619  */
 620
 621 static void __devinit snd_mtpav_set_name(struct mtpav *chip,
 622                                       struct snd_rawmidi_substream *substream)
 623 {
 624         if (substream->number >= 0 && substream->number < chip->num_ports)
 625                 sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
 626         else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
 627                 sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
 628         else if (substream->number == chip->num_ports * 2)
 629                 strcpy(substream->name, "MTP computer");
 630         else if (substream->number == chip->num_ports * 2 + 1)
 631                 strcpy(substream->name, "MTP ADAT");
 632         else
 633                 strcpy(substream->name, "MTP broadcast");
 634 }
 635
 636 static int __devinit snd_mtpav_get_RAWMIDI(struct mtpav *mcard)
 637 {
 638         int rval;
 639         struct snd_rawmidi *rawmidi;
 640         struct snd_rawmidi_substream *substream;
 641         struct list_head *list;
 642
 643         if (hwports < 1)
 644                 hwports = 1;
 645         else if (hwports > 8)
 646                 hwports = 8;
 647         mcard->num_ports = hwports;
 648
 649         if ((rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
 650                                     mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
 651                                     mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
 652                                     &mcard->rmidi)) < 0)
 653                 return rval;
 654         rawmidi = mcard->rmidi;
 655         rawmidi->private_data = mcard;
 656
 657         list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
 658                 substream = list_entry(list, struct snd_rawmidi_substream, list);
 659                 snd_mtpav_set_name(mcard, substream);
 660                 substream->ops = &snd_mtpav_input;
 661         }
 662         list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
 663                 substream = list_entry(list, struct snd_rawmidi_substream, list);
 664                 snd_mtpav_set_name(mcard, substream);
 665                 substream->ops = &snd_mtpav_output;
 666                 mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
 667         }
 668         rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
 669                                SNDRV_RAWMIDI_INFO_DUPLEX;
 670         sprintf(rawmidi->name, "MTP AV MIDI");
 671         return 0;
 672 }
 673
 674 /*
 675  */
 676
 677 static void snd_mtpav_free(struct snd_card *card)
 678 {
 679         struct mtpav *crd = card->private_data;
 680         unsigned long flags;
 681
 682         spin_lock_irqsave(&crd->spinlock, flags);
 683         if (crd->istimer > 0)
 684                 snd_mtpav_remove_output_timer(crd);
 685         spin_unlock_irqrestore(&crd->spinlock, flags);
 686         if (crd->irq >= 0)
 687                 free_irq(crd->irq, (void *)crd);
 688         release_and_free_resource(crd->res_port);
 689 }
 690
 691 /*
 692  */
 693 static int __devinit snd_mtpav_probe(struct platform_device *dev)
 694 {
 695         struct snd_card *card;
 696         int err;
 697         struct mtpav *mtp_card;
 698
 699         err = snd_card_create(index, id, THIS_MODULE, 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         init_timer(&mtp_card->timer);
 706         mtp_card->card = card;
 707         mtp_card->irq = -1;
 708         mtp_card->share_irq = 0;
 709         mtp_card->inmidistate = 0;
 710         mtp_card->outmidihwport = 0xffffffff;
 711         init_timer(&mtp_card->timer);
 712         mtp_card->timer.function = snd_mtpav_output_timer;
 713         mtp_card->timer.data = (unsigned long) mtp_card;
 714
 715         card->private_free = snd_mtpav_free;
 716
 717         err = snd_mtpav_get_RAWMIDI(mtp_card);
 718         if (err < 0)
 719                 goto __error;
 720
 721         mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
 722
 723         err = snd_mtpav_get_ISA(mtp_card);
 724         if (err < 0)
 725                 goto __error;
 726
 727         strcpy(card->driver, "MTPAV");
 728         strcpy(card->shortname, "MTPAV on parallel port");
 729         snprintf(card->longname, sizeof(card->longname),
 730                  "MTPAV on parallel port at 0x%lx", port);
 731
 732         snd_mtpav_portscan(mtp_card);
 733
 734         snd_card_set_dev(card, &dev->dev);
 735         err = snd_card_register(mtp_card->card);
 736         if (err < 0)
 737                 goto __error;
 738
 739         platform_set_drvdata(dev, card);
 740         printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
 741         return 0;
 742
 743  __error:
 744         snd_card_free(card);
 745         return err;
 746 }
 747
 748 static int __devexit snd_mtpav_remove(struct platform_device *devptr)
 749 {
 750         snd_card_free(platform_get_drvdata(devptr));
 751         platform_set_drvdata(devptr, NULL);
 752         return 0;
 753 }
 754
 755 #define SND_MTPAV_DRIVER        "snd_mtpav"
 756
 757 static struct platform_driver snd_mtpav_driver = {
 758         .probe          = snd_mtpav_probe,
 759         .remove         = __devexit_p(snd_mtpav_remove),
 760         .driver         = {
 761                 .name   = SND_MTPAV_DRIVER
 762         },
 763 };
 764
 765 static int __init alsa_card_mtpav_init(void)
 766 {
 767         int err;
 768
 769         if ((err = platform_driver_register(&snd_mtpav_driver)) < 0)
 770                 return err;
 771
 772         device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
 773         if (!IS_ERR(device)) {
 774                 if (platform_get_drvdata(device))
 775                         return 0;
 776                 platform_device_unregister(device);
 777                 err = -ENODEV;
 778         } else
 779                 err = PTR_ERR(device);
 780         platform_driver_unregister(&snd_mtpav_driver);
 781         return err;
 782 }
 783
 784 static void __exit alsa_card_mtpav_exit(void)
 785 {
 786         platform_device_unregister(device);
 787         platform_driver_unregister(&snd_mtpav_driver);
 788 }
 789
 790 module_init(alsa_card_mtpav_init)
 791 module_exit(alsa_card_mtpav_exit)