linux/sound/drivers/mtpav.c
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   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 */
  69MODULE_AUTHOR("Michael T. Mayers");
  70MODULE_DESCRIPTION("MOTU MidiTimePiece AV multiport MIDI");
  71MODULE_LICENSE("GPL");
  72MODULE_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
  79static int index = SNDRV_DEFAULT_IDX1;
  80static char *id = SNDRV_DEFAULT_STR1;
  81static long port = MTPAV_IOBASE;        /* 0x378, 0x278 */
  82static int irq = MTPAV_IRQ;             /* 7, 5 */
  83static int hwports = MTPAV_MAX_PORTS;   /* use hardware ports 1-8 */
  84
  85module_param(index, int, 0444);
  86MODULE_PARM_DESC(index, "Index value for MotuMTPAV MIDI.");
  87module_param(id, charp, 0444);
  88MODULE_PARM_DESC(id, "ID string for MotuMTPAV MIDI.");
  89module_param(port, long, 0444);
  90MODULE_PARM_DESC(port, "Parallel port # for MotuMTPAV MIDI.");
  91module_param(irq, int, 0444);
  92MODULE_PARM_DESC(irq, "Parallel IRQ # for MotuMTPAV MIDI.");
  93module_param(hwports, int, 0444);
  94MODULE_PARM_DESC(hwports, "Hardware ports # for MotuMTPAV MIDI.");
  95
  96static 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
 130struct 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
 139struct 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
 182static 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
 197static 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
 222static 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
 240static 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
 249static 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
 261static 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 */
 287static 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
 323static 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
 339static 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
 353static 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
 371static 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
 389static 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
 409static 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        chip->timer.expires = 1 + jiffies;
 418        add_timer(&chip->timer);
 419        /* process each port */
 420        for (p = 0; p <= chip->num_ports * 2 + MTPAV_PIDX_BROADCAST; p++) {
 421                struct mtpav_port *portp = &chip->ports[p];
 422                if ((portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED) && portp->output)
 423                        snd_mtpav_output_port_write(chip, portp, portp->output);
 424        }
 425        spin_unlock_irqrestore(&chip->spinlock, flags);
 426}
 427
 428/* spinlock held! */
 429static void snd_mtpav_add_output_timer(struct mtpav *chip)
 430{
 431        chip->timer.expires = 1 + jiffies;
 432        add_timer(&chip->timer);
 433}
 434
 435/* spinlock held! */
 436static void snd_mtpav_remove_output_timer(struct mtpav *chip)
 437{
 438        del_timer(&chip->timer);
 439}
 440
 441/*
 442 */
 443
 444static int snd_mtpav_output_open(struct snd_rawmidi_substream *substream)
 445{
 446        struct mtpav *mtp_card = substream->rmidi->private_data;
 447        struct mtpav_port *portp = &mtp_card->ports[substream->number];
 448        unsigned long flags;
 449
 450        spin_lock_irqsave(&mtp_card->spinlock, flags);
 451        portp->mode |= MTPAV_MODE_OUTPUT_OPENED;
 452        portp->output = substream;
 453        spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 454        return 0;
 455};
 456
 457/*
 458 */
 459
 460static int snd_mtpav_output_close(struct snd_rawmidi_substream *substream)
 461{
 462        struct mtpav *mtp_card = substream->rmidi->private_data;
 463        struct mtpav_port *portp = &mtp_card->ports[substream->number];
 464        unsigned long flags;
 465
 466        spin_lock_irqsave(&mtp_card->spinlock, flags);
 467        portp->mode &= ~MTPAV_MODE_OUTPUT_OPENED;
 468        portp->output = NULL;
 469        spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 470        return 0;
 471};
 472
 473/*
 474 */
 475
 476static void snd_mtpav_output_trigger(struct snd_rawmidi_substream *substream, int up)
 477{
 478        struct mtpav *mtp_card = substream->rmidi->private_data;
 479        struct mtpav_port *portp = &mtp_card->ports[substream->number];
 480        unsigned long flags;
 481
 482        spin_lock_irqsave(&mtp_card->spinlock, flags);
 483        if (up) {
 484                if (! (portp->mode & MTPAV_MODE_OUTPUT_TRIGGERED)) {
 485                        if (mtp_card->istimer++ == 0)
 486                                snd_mtpav_add_output_timer(mtp_card);
 487                        portp->mode |= MTPAV_MODE_OUTPUT_TRIGGERED;
 488                }
 489        } else {
 490                portp->mode &= ~MTPAV_MODE_OUTPUT_TRIGGERED;
 491                if (--mtp_card->istimer == 0)
 492                        snd_mtpav_remove_output_timer(mtp_card);
 493        }
 494        spin_unlock_irqrestore(&mtp_card->spinlock, flags);
 495
 496        if (up)
 497                snd_mtpav_output_write(substream);
 498}
 499
 500/*
 501 * midi interrupt for inputs
 502 */
 503
 504static void snd_mtpav_inmidi_process(struct mtpav *mcrd, u8 inbyte)
 505{
 506        struct mtpav_port *portp;
 507
 508        if ((int)mcrd->inmidiport > mcrd->num_ports * 2 + MTPAV_PIDX_BROADCAST)
 509                return;
 510
 511        portp = &mcrd->ports[mcrd->inmidiport];
 512        if (portp->mode & MTPAV_MODE_INPUT_TRIGGERED)
 513                snd_rawmidi_receive(portp->input, &inbyte, 1);
 514}
 515
 516static void snd_mtpav_inmidi_h(struct mtpav *mcrd, u8 inbyte)
 517{
 518        if (inbyte >= 0xf8) {
 519                /* real-time midi code */
 520                snd_mtpav_inmidi_process(mcrd, inbyte);
 521                return;
 522        }
 523
 524        if (mcrd->inmidistate == 0) {   // awaiting command
 525                if (inbyte == 0xf5)     // MTP port #
 526                        mcrd->inmidistate = 1;
 527                else
 528                        snd_mtpav_inmidi_process(mcrd, inbyte);
 529        } else if (mcrd->inmidistate) {
 530                mcrd->inmidiport = translate_hwport_to_subdevice(mcrd, inbyte);
 531                mcrd->inmidistate = 0;
 532        }
 533}
 534
 535static void snd_mtpav_read_bytes(struct mtpav *mcrd)
 536{
 537        u8 clrread, setread;
 538        u8 mtp_read_byte;
 539        u8 sr, cbyt;
 540        int i;
 541
 542        u8 sbyt = snd_mtpav_getreg(mcrd, SREG);
 543
 544        /* printk(KERN_DEBUG "snd_mtpav_read_bytes() sbyt: 0x%x\n", sbyt); */
 545
 546        if (!(sbyt & SIGS_BYTE))
 547                return;
 548
 549        cbyt = snd_mtpav_getreg(mcrd, CREG);
 550        clrread = cbyt & (SIGC_READ ^ 0xff);
 551        setread = cbyt | SIGC_READ;
 552
 553        do {
 554
 555                mtp_read_byte = 0;
 556                for (i = 0; i < 4; i++) {
 557                        snd_mtpav_mputreg(mcrd, CREG, setread);
 558                        sr = snd_mtpav_getreg(mcrd, SREG);
 559                        snd_mtpav_mputreg(mcrd, CREG, clrread);
 560
 561                        sr &= SIGS_IN0 | SIGS_IN1;
 562                        sr >>= 4;
 563                        mtp_read_byte |= sr << (i * 2);
 564                }
 565
 566                snd_mtpav_inmidi_h(mcrd, mtp_read_byte);
 567
 568                sbyt = snd_mtpav_getreg(mcrd, SREG);
 569
 570        } while (sbyt & SIGS_BYTE);
 571}
 572
 573static irqreturn_t snd_mtpav_irqh(int irq, void *dev_id)
 574{
 575        struct mtpav *mcard = dev_id;
 576
 577        spin_lock(&mcard->spinlock);
 578        snd_mtpav_read_bytes(mcard);
 579        spin_unlock(&mcard->spinlock);
 580        return IRQ_HANDLED;
 581}
 582
 583/*
 584 * get ISA resources
 585 */
 586static int __devinit snd_mtpav_get_ISA(struct mtpav * mcard)
 587{
 588        if ((mcard->res_port = request_region(port, 3, "MotuMTPAV MIDI")) == NULL) {
 589                snd_printk(KERN_ERR "MTVAP port 0x%lx is busy\n", port);
 590                return -EBUSY;
 591        }
 592        mcard->port = port;
 593        if (request_irq(irq, snd_mtpav_irqh, 0, "MOTU MTPAV", mcard)) {
 594                snd_printk(KERN_ERR "MTVAP IRQ %d busy\n", irq);
 595                return -EBUSY;
 596        }
 597        mcard->irq = irq;
 598        return 0;
 599}
 600
 601
 602/*
 603 */
 604
 605static struct snd_rawmidi_ops snd_mtpav_output = {
 606        .open =         snd_mtpav_output_open,
 607        .close =        snd_mtpav_output_close,
 608        .trigger =      snd_mtpav_output_trigger,
 609};
 610
 611static struct snd_rawmidi_ops snd_mtpav_input = {
 612        .open =         snd_mtpav_input_open,
 613        .close =        snd_mtpav_input_close,
 614        .trigger =      snd_mtpav_input_trigger,
 615};
 616
 617
 618/*
 619 * get RAWMIDI resources
 620 */
 621
 622static void __devinit snd_mtpav_set_name(struct mtpav *chip,
 623                                      struct snd_rawmidi_substream *substream)
 624{
 625        if (substream->number >= 0 && substream->number < chip->num_ports)
 626                sprintf(substream->name, "MTP direct %d", (substream->number % chip->num_ports) + 1);
 627        else if (substream->number >= 8 && substream->number < chip->num_ports * 2)
 628                sprintf(substream->name, "MTP remote %d", (substream->number % chip->num_ports) + 1);
 629        else if (substream->number == chip->num_ports * 2)
 630                strcpy(substream->name, "MTP computer");
 631        else if (substream->number == chip->num_ports * 2 + 1)
 632                strcpy(substream->name, "MTP ADAT");
 633        else
 634                strcpy(substream->name, "MTP broadcast");
 635}
 636
 637static int __devinit snd_mtpav_get_RAWMIDI(struct mtpav *mcard)
 638{
 639        int rval;
 640        struct snd_rawmidi *rawmidi;
 641        struct snd_rawmidi_substream *substream;
 642        struct list_head *list;
 643
 644        if (hwports < 1)
 645                hwports = 1;
 646        else if (hwports > 8)
 647                hwports = 8;
 648        mcard->num_ports = hwports;
 649
 650        if ((rval = snd_rawmidi_new(mcard->card, "MotuMIDI", 0,
 651                                    mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
 652                                    mcard->num_ports * 2 + MTPAV_PIDX_BROADCAST + 1,
 653                                    &mcard->rmidi)) < 0)
 654                return rval;
 655        rawmidi = mcard->rmidi;
 656        rawmidi->private_data = mcard;
 657
 658        list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
 659                substream = list_entry(list, struct snd_rawmidi_substream, list);
 660                snd_mtpav_set_name(mcard, substream);
 661                substream->ops = &snd_mtpav_input;
 662        }
 663        list_for_each(list, &rawmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
 664                substream = list_entry(list, struct snd_rawmidi_substream, list);
 665                snd_mtpav_set_name(mcard, substream);
 666                substream->ops = &snd_mtpav_output;
 667                mcard->ports[substream->number].hwport = translate_subdevice_to_hwport(mcard, substream->number);
 668        }
 669        rawmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
 670                               SNDRV_RAWMIDI_INFO_DUPLEX;
 671        sprintf(rawmidi->name, "MTP AV MIDI");
 672        return 0;
 673}
 674
 675/*
 676 */
 677
 678static void snd_mtpav_free(struct snd_card *card)
 679{
 680        struct mtpav *crd = card->private_data;
 681        unsigned long flags;
 682
 683        spin_lock_irqsave(&crd->spinlock, flags);
 684        if (crd->istimer > 0)
 685                snd_mtpav_remove_output_timer(crd);
 686        spin_unlock_irqrestore(&crd->spinlock, flags);
 687        if (crd->irq >= 0)
 688                free_irq(crd->irq, (void *)crd);
 689        release_and_free_resource(crd->res_port);
 690}
 691
 692/*
 693 */
 694static int __devinit snd_mtpav_probe(struct platform_device *dev)
 695{
 696        struct snd_card *card;
 697        int err;
 698        struct mtpav *mtp_card;
 699
 700        err = snd_card_create(index, id, THIS_MODULE, sizeof(*mtp_card), &card);
 701        if (err < 0)
 702                return err;
 703
 704        mtp_card = card->private_data;
 705        spin_lock_init(&mtp_card->spinlock);
 706        init_timer(&mtp_card->timer);
 707        mtp_card->card = card;
 708        mtp_card->irq = -1;
 709        mtp_card->share_irq = 0;
 710        mtp_card->inmidistate = 0;
 711        mtp_card->outmidihwport = 0xffffffff;
 712        init_timer(&mtp_card->timer);
 713        mtp_card->timer.function = snd_mtpav_output_timer;
 714        mtp_card->timer.data = (unsigned long) mtp_card;
 715
 716        card->private_free = snd_mtpav_free;
 717
 718        err = snd_mtpav_get_RAWMIDI(mtp_card);
 719        if (err < 0)
 720                goto __error;
 721
 722        mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
 723
 724        err = snd_mtpav_get_ISA(mtp_card);
 725        if (err < 0)
 726                goto __error;
 727
 728        strcpy(card->driver, "MTPAV");
 729        strcpy(card->shortname, "MTPAV on parallel port");
 730        snprintf(card->longname, sizeof(card->longname),
 731                 "MTPAV on parallel port at 0x%lx", port);
 732
 733        snd_mtpav_portscan(mtp_card);
 734
 735        snd_card_set_dev(card, &dev->dev);
 736        err = snd_card_register(mtp_card->card);
 737        if (err < 0)
 738                goto __error;
 739
 740        platform_set_drvdata(dev, card);
 741        printk(KERN_INFO "Motu MidiTimePiece on parallel port irq: %d ioport: 0x%lx\n", irq, port);
 742        return 0;
 743
 744 __error:
 745        snd_card_free(card);
 746        return err;
 747}
 748
 749static int __devexit snd_mtpav_remove(struct platform_device *devptr)
 750{
 751        snd_card_free(platform_get_drvdata(devptr));
 752        platform_set_drvdata(devptr, NULL);
 753        return 0;
 754}
 755
 756#define SND_MTPAV_DRIVER        "snd_mtpav"
 757
 758static struct platform_driver snd_mtpav_driver = {
 759        .probe          = snd_mtpav_probe,
 760        .remove         = __devexit_p(snd_mtpav_remove),
 761        .driver         = {
 762                .name   = SND_MTPAV_DRIVER,
 763                .owner  = THIS_MODULE,
 764        },
 765};
 766
 767static int __init alsa_card_mtpav_init(void)
 768{
 769        int err;
 770
 771        if ((err = platform_driver_register(&snd_mtpav_driver)) < 0)
 772                return err;
 773
 774        device = platform_device_register_simple(SND_MTPAV_DRIVER, -1, NULL, 0);
 775        if (!IS_ERR(device)) {
 776                if (platform_get_drvdata(device))
 777                        return 0;
 778                platform_device_unregister(device);
 779                err = -ENODEV;
 780        } else
 781                err = PTR_ERR(device);
 782        platform_driver_unregister(&snd_mtpav_driver);
 783        return err;
 784}
 785
 786static void __exit alsa_card_mtpav_exit(void)
 787{
 788        platform_device_unregister(device);
 789        platform_driver_unregister(&snd_mtpav_driver);
 790}
 791
 792module_init(alsa_card_mtpav_init)
 793module_exit(alsa_card_mtpav_exit)
 794
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