sound/drivers/mts64.c

   1 /*
   2  *   ALSA Driver for Ego Systems Inc. (ESI) Miditerminal 4140
   3  *   Copyright (c) 2006 by Matthias König <mk@phasorlab.de>
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation; either version 2 of the License, or
   8  *   (at your option) any later version.
   9  *
  10  *   This program is distributed in the hope that it will be useful,
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *   GNU General Public License for more details.
  14  *
  15  *   You should have received a copy of the GNU General Public License
  16  *   along with this program; if not, write to the Free Software
  17  *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  *
  19  */
  20
  21 #include <linux/init.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/parport.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/delay.h>
  26 #include <linux/slab.h>
  27 #include <sound/core.h>
  28 #include <sound/initval.h>
  29 #include <sound/rawmidi.h>
  30 #include <sound/control.h>
  31
  32 #define CARD_NAME "Miditerminal 4140"
  33 #define DRIVER_NAME "MTS64"
  34 #define PLATFORM_DRIVER "snd_mts64"
  35
  36 static int index[SNDRV_CARDS]  = SNDRV_DEFAULT_IDX;
  37 static char *id[SNDRV_CARDS]   = SNDRV_DEFAULT_STR;
  38 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  39
  40 static struct platform_device *platform_devices[SNDRV_CARDS];
  41 static int device_count;
  42
  43 module_param_array(index, int, NULL, S_IRUGO);
  44 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  45 module_param_array(id, charp, NULL, S_IRUGO);
  46 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  47 module_param_array(enable, bool, NULL, S_IRUGO);
  48 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  49
  50 MODULE_AUTHOR("Matthias Koenig <mk@phasorlab.de>");
  51 MODULE_DESCRIPTION("ESI Miditerminal 4140");
  52 MODULE_LICENSE("GPL");
  53 MODULE_SUPPORTED_DEVICE("{{ESI,Miditerminal 4140}}");
  54
  55 /*********************************************************************
  56  * Chip specific
  57  *********************************************************************/
  58 #define MTS64_NUM_INPUT_PORTS 5
  59 #define MTS64_NUM_OUTPUT_PORTS 4
  60 #define MTS64_SMPTE_SUBSTREAM 4
  61
  62 struct mts64 {
  63         spinlock_t lock;
  64         struct snd_card *card;
  65         struct snd_rawmidi *rmidi;
  66         struct pardevice *pardev;
  67         int pardev_claimed;
  68
  69         int open_count;
  70         int current_midi_output_port;
  71         int current_midi_input_port;
  72         u8 mode[MTS64_NUM_INPUT_PORTS];
  73         struct snd_rawmidi_substream *midi_input_substream[MTS64_NUM_INPUT_PORTS];
  74         int smpte_switch;
  75         u8 time[4]; /* [0]=hh, [1]=mm, [2]=ss, [3]=ff */
  76         u8 fps;
  77 };
  78
  79 static int snd_mts64_free(struct mts64 *mts)
  80 {
  81         kfree(mts);
  82         return 0;
  83 }
  84
  85 static int __devinit snd_mts64_create(struct snd_card *card,
  86                                       struct pardevice *pardev,
  87                                       struct mts64 **rchip)
  88 {
  89         struct mts64 *mts;
  90
  91         *rchip = NULL;
  92
  93         mts = kzalloc(sizeof(struct mts64), GFP_KERNEL);
  94         if (mts == NULL)
  95                 return -ENOMEM;
  96
  97         /* Init chip specific data */
  98         spin_lock_init(&mts->lock);
  99         mts->card = card;
 100         mts->pardev = pardev;
 101         mts->current_midi_output_port = -1;
 102         mts->current_midi_input_port = -1;
 103
 104         *rchip = mts;
 105
 106         return 0;
 107 }
 108
 109 /*********************************************************************
 110  * HW register related constants
 111  *********************************************************************/
 112
 113 /* Status Bits */
 114 #define MTS64_STAT_BSY             0x80
 115 #define MTS64_STAT_BIT_SET         0x20  /* readout process, bit is set */
 116 #define MTS64_STAT_PORT            0x10  /* read byte is a port number */
 117
 118 /* Control Bits */
 119 #define MTS64_CTL_READOUT          0x08  /* enable readout */
 120 #define MTS64_CTL_WRITE_CMD        0x06
 121 #define MTS64_CTL_WRITE_DATA       0x02
 122 #define MTS64_CTL_STROBE           0x01
 123
 124 /* Command */
 125 #define MTS64_CMD_RESET            0xfe
 126 #define MTS64_CMD_PROBE            0x8f  /* Used in probing procedure */
 127 #define MTS64_CMD_SMPTE_SET_TIME   0xe8
 128 #define MTS64_CMD_SMPTE_SET_FPS    0xee
 129 #define MTS64_CMD_SMPTE_STOP       0xef
 130 #define MTS64_CMD_SMPTE_FPS_24     0xe3
 131 #define MTS64_CMD_SMPTE_FPS_25     0xe2
 132 #define MTS64_CMD_SMPTE_FPS_2997   0xe4
 133 #define MTS64_CMD_SMPTE_FPS_30D    0xe1
 134 #define MTS64_CMD_SMPTE_FPS_30     0xe0
 135 #define MTS64_CMD_COM_OPEN         0xf8  /* setting the communication mode */
 136 #define MTS64_CMD_COM_CLOSE1       0xff  /* clearing communication mode */
 137 #define MTS64_CMD_COM_CLOSE2       0xf5
 138
 139 /*********************************************************************
 140  * Hardware specific functions
 141  *********************************************************************/
 142 static void mts64_enable_readout(struct parport *p);
 143 static void mts64_disable_readout(struct parport *p);
 144 static int mts64_device_ready(struct parport *p);
 145 static int mts64_device_init(struct parport *p);
 146 static int mts64_device_open(struct mts64 *mts);
 147 static int mts64_device_close(struct mts64 *mts);
 148 static u8 mts64_map_midi_input(u8 c);
 149 static int mts64_probe(struct parport *p);
 150 static u16 mts64_read(struct parport *p);
 151 static u8 mts64_read_char(struct parport *p);
 152 static void mts64_smpte_start(struct parport *p,
 153                               u8 hours, u8 minutes,
 154                               u8 seconds, u8 frames,
 155                               u8 idx);
 156 static void mts64_smpte_stop(struct parport *p);
 157 static void mts64_write_command(struct parport *p, u8 c);
 158 static void mts64_write_data(struct parport *p, u8 c);
 159 static void mts64_write_midi(struct mts64 *mts, u8 c, int midiport);
 160
 161
 162 /*  Enables the readout procedure
 163  *
 164  *  Before we can read a midi byte from the device, we have to set
 165  *  bit 3 of control port.
 166  */
 167 static void mts64_enable_readout(struct parport *p)
 168 {
 169         u8 c;
 170
 171         c = parport_read_control(p);
 172         c |= MTS64_CTL_READOUT;
 173         parport_write_control(p, c);
 174 }
 175
 176 /*  Disables readout
 177  *
 178  *  Readout is disabled by clearing bit 3 of control
 179  */
 180 static void mts64_disable_readout(struct parport *p)
 181 {
 182         u8 c;
 183
 184         c = parport_read_control(p);
 185         c &= ~MTS64_CTL_READOUT;
 186         parport_write_control(p, c);
 187 }
 188
 189 /*  waits for device ready
 190  *
 191  *  Checks if BUSY (Bit 7 of status) is clear
 192  *  1 device ready
 193  *  0 failure
 194  */
 195 static int mts64_device_ready(struct parport *p)
 196 {
 197         int i;
 198         u8 c;
 199
 200         for (i = 0; i < 0xffff; ++i) {
 201                 c = parport_read_status(p);
 202                 c &= MTS64_STAT_BSY;
 203                 if (c != 0)
 204                         return 1;
 205         }
 206
 207         return 0;
 208 }
 209
 210 /*  Init device (LED blinking startup magic)
 211  *
 212  *  Returns:
 213  *  0 init ok
 214  *  -EIO failure
 215  */
 216 static int __devinit mts64_device_init(struct parport *p)
 217 {
 218         int i;
 219
 220         mts64_write_command(p, MTS64_CMD_RESET);
 221
 222         for (i = 0; i < 64; ++i) {
 223                 msleep(100);
 224
 225                 if (mts64_probe(p) == 0) {
 226                         /* success */
 227                         mts64_disable_readout(p);
 228                         return 0;
 229                 }
 230         }
 231         mts64_disable_readout(p);
 232
 233         return -EIO;
 234 }
 235
 236 /*
 237  *  Opens the device (set communication mode)
 238  */
 239 static int mts64_device_open(struct mts64 *mts)
 240 {
 241         int i;
 242         struct parport *p = mts->pardev->port;
 243
 244         for (i = 0; i < 5; ++i)
 245                 mts64_write_command(p, MTS64_CMD_COM_OPEN);
 246
 247         return 0;
 248 }
 249
 250 /*
 251  *  Close device (clear communication mode)
 252  */
 253 static int mts64_device_close(struct mts64 *mts)
 254 {
 255         int i;
 256         struct parport *p = mts->pardev->port;
 257
 258         for (i = 0; i < 5; ++i) {
 259                 mts64_write_command(p, MTS64_CMD_COM_CLOSE1);
 260                 mts64_write_command(p, MTS64_CMD_COM_CLOSE2);
 261         }
 262
 263         return 0;
 264 }
 265
 266 /*  map hardware port to substream number
 267  *
 268  *  When reading a byte from the device, the device tells us
 269  *  on what port the byte is. This HW port has to be mapped to
 270  *  the midiport (substream number).
 271  *  substream 0-3 are Midiports 1-4
 272  *  substream 4 is SMPTE Timecode
 273  *  The mapping is done by the table:
 274  *  HW | 0 | 1 | 2 | 3 | 4
 275  *  SW | 0 | 1 | 4 | 2 | 3
 276  */
 277 static u8 mts64_map_midi_input(u8 c)
 278 {
 279         static u8 map[] = { 0, 1, 4, 2, 3 };
 280
 281         return map[c];
 282 }
 283
 284
 285 /*  Probe parport for device
 286  *
 287  *  Do we have a Miditerminal 4140 on parport?
 288  *  Returns:
 289  *  0       device found
 290  *  -ENODEV no device
 291  */
 292 static int __devinit mts64_probe(struct parport *p)
 293 {
 294         u8 c;
 295
 296         mts64_smpte_stop(p);
 297         mts64_write_command(p, MTS64_CMD_PROBE);
 298
 299         msleep(50);
 300
 301         c = mts64_read(p);
 302
 303         c &= 0x00ff;
 304         if (c != MTS64_CMD_PROBE)
 305                 return -ENODEV;
 306         else
 307                 return 0;
 308
 309 }
 310
 311 /*  Read byte incl. status from device
 312  *
 313  *  Returns:
 314  *  data in lower 8 bits and status in upper 8 bits
 315  */
 316 static u16 mts64_read(struct parport *p)
 317 {
 318         u8 data, status;
 319
 320         mts64_device_ready(p);
 321         mts64_enable_readout(p);
 322         status = parport_read_status(p);
 323         data = mts64_read_char(p);
 324         mts64_disable_readout(p);
 325
 326         return (status << 8) | data;
 327 }
 328
 329 /*  Read a byte from device
 330  *
 331  *  Note, that readout mode has to be enabled.
 332  *  readout procedure is as follows:
 333  *  - Write number of the Bit to read to DATA
 334  *  - Read STATUS
 335  *  - Bit 5 of STATUS indicates if Bit is set
 336  *
 337  *  Returns:
 338  *  Byte read from device
 339  */
 340 static u8 mts64_read_char(struct parport *p)
 341 {
 342         u8 c = 0;
 343         u8 status;
 344         u8 i;
 345
 346         for (i = 0; i < 8; ++i) {
 347                 parport_write_data(p, i);
 348                 c >>= 1;
 349                 status = parport_read_status(p);
 350                 if (status & MTS64_STAT_BIT_SET)
 351                         c |= 0x80;
 352         }
 353
 354         return c;
 355 }
 356
 357 /*  Starts SMPTE Timecode generation
 358  *
 359  *  The device creates SMPTE Timecode by hardware.
 360  *  0 24 fps
 361  *  1 25 fps
 362  *  2 29.97 fps
 363  *  3 30 fps (Drop-frame)
 364  *  4 30 fps
 365  */
 366 static void mts64_smpte_start(struct parport *p,
 367                               u8 hours, u8 minutes,
 368                               u8 seconds, u8 frames,
 369                               u8 idx)
 370 {
 371         static u8 fps[5] = { MTS64_CMD_SMPTE_FPS_24,
 372                              MTS64_CMD_SMPTE_FPS_25,
 373                              MTS64_CMD_SMPTE_FPS_2997,
 374                              MTS64_CMD_SMPTE_FPS_30D,
 375                              MTS64_CMD_SMPTE_FPS_30    };
 376
 377         mts64_write_command(p, MTS64_CMD_SMPTE_SET_TIME);
 378         mts64_write_command(p, frames);
 379         mts64_write_command(p, seconds);
 380         mts64_write_command(p, minutes);
 381         mts64_write_command(p, hours);
 382
 383         mts64_write_command(p, MTS64_CMD_SMPTE_SET_FPS);
 384         mts64_write_command(p, fps[idx]);
 385 }
 386
 387 /*  Stops SMPTE Timecode generation
 388  */
 389 static void mts64_smpte_stop(struct parport *p)
 390 {
 391         mts64_write_command(p, MTS64_CMD_SMPTE_STOP);
 392 }
 393
 394 /*  Write a command byte to device
 395  */
 396 static void mts64_write_command(struct parport *p, u8 c)
 397 {
 398         mts64_device_ready(p);
 399
 400         parport_write_data(p, c);
 401
 402         parport_write_control(p, MTS64_CTL_WRITE_CMD);
 403         parport_write_control(p, MTS64_CTL_WRITE_CMD | MTS64_CTL_STROBE);
 404         parport_write_control(p, MTS64_CTL_WRITE_CMD);
 405 }
 406
 407 /*  Write a data byte to device
 408  */
 409 static void mts64_write_data(struct parport *p, u8 c)
 410 {
 411         mts64_device_ready(p);
 412
 413         parport_write_data(p, c);
 414
 415         parport_write_control(p, MTS64_CTL_WRITE_DATA);
 416         parport_write_control(p, MTS64_CTL_WRITE_DATA | MTS64_CTL_STROBE);
 417         parport_write_control(p, MTS64_CTL_WRITE_DATA);
 418 }
 419
 420 /*  Write a MIDI byte to midiport
 421  *
 422  *  midiport ranges from 0-3 and maps to Ports 1-4
 423  *  assumptions: communication mode is on
 424  */
 425 static void mts64_write_midi(struct mts64 *mts, u8 c,
 426                              int midiport)
 427 {
 428         struct parport *p = mts->pardev->port;
 429
 430         /* check current midiport */
 431         if (mts->current_midi_output_port != midiport)
 432                 mts64_write_command(p, midiport);
 433
 434         /* write midi byte */
 435         mts64_write_data(p, c);
 436 }
 437
 438 /*********************************************************************
 439  * Control elements
 440  *********************************************************************/
 441
 442 /* SMPTE Switch */
 443 #define snd_mts64_ctl_smpte_switch_info         snd_ctl_boolean_mono_info
 444
 445 static int snd_mts64_ctl_smpte_switch_get(struct snd_kcontrol* kctl,
 446                                           struct snd_ctl_elem_value *uctl)
 447 {
 448         struct mts64 *mts = snd_kcontrol_chip(kctl);
 449
 450         spin_lock_irq(&mts->lock);
 451         uctl->value.integer.value[0] = mts->smpte_switch;
 452         spin_unlock_irq(&mts->lock);
 453
 454         return 0;
 455 }
 456
 457 /* smpte_switch is not accessed from IRQ handler, so we just need
 458    to protect the HW access */
 459 static int snd_mts64_ctl_smpte_switch_put(struct snd_kcontrol* kctl,
 460                                           struct snd_ctl_elem_value *uctl)
 461 {
 462         struct mts64 *mts = snd_kcontrol_chip(kctl);
 463         int changed = 0;
 464         int val = !!uctl->value.integer.value[0];
 465
 466         spin_lock_irq(&mts->lock);
 467         if (mts->smpte_switch == val)
 468                 goto __out;
 469
 470         changed = 1;
 471         mts->smpte_switch = val;
 472         if (mts->smpte_switch) {
 473                 mts64_smpte_start(mts->pardev->port,
 474                                   mts->time[0], mts->time[1],
 475                                   mts->time[2], mts->time[3],
 476                                   mts->fps);
 477         } else {
 478                 mts64_smpte_stop(mts->pardev->port);
 479         }
 480 __out:
 481         spin_unlock_irq(&mts->lock);
 482         return changed;
 483 }
 484
 485 static struct snd_kcontrol_new mts64_ctl_smpte_switch __devinitdata = {
 486         .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
 487         .name  = "SMPTE Playback Switch",
 488         .index = 0,
 489         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 490         .private_value = 0,
 491         .info = snd_mts64_ctl_smpte_switch_info,
 492         .get  = snd_mts64_ctl_smpte_switch_get,
 493         .put  = snd_mts64_ctl_smpte_switch_put
 494 };
 495
 496 /* Time */
 497 static int snd_mts64_ctl_smpte_time_h_info(struct snd_kcontrol *kctl,
 498                                            struct snd_ctl_elem_info *uinfo)
 499 {
 500         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 501         uinfo->count = 1;
 502         uinfo->value.integer.min = 0;
 503         uinfo->value.integer.max = 23;
 504         return 0;
 505 }
 506
 507 static int snd_mts64_ctl_smpte_time_f_info(struct snd_kcontrol *kctl,
 508                                            struct snd_ctl_elem_info *uinfo)
 509 {
 510         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 511         uinfo->count = 1;
 512         uinfo->value.integer.min = 0;
 513         uinfo->value.integer.max = 99;
 514         return 0;
 515 }
 516
 517 static int snd_mts64_ctl_smpte_time_info(struct snd_kcontrol *kctl,
 518                                          struct snd_ctl_elem_info *uinfo)
 519 {
 520         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 521         uinfo->count = 1;
 522         uinfo->value.integer.min = 0;
 523         uinfo->value.integer.max = 59;
 524         return 0;
 525 }
 526
 527 static int snd_mts64_ctl_smpte_time_get(struct snd_kcontrol *kctl,
 528                                         struct snd_ctl_elem_value *uctl)
 529 {
 530         struct mts64 *mts = snd_kcontrol_chip(kctl);
 531         int idx = kctl->private_value;
 532
 533         spin_lock_irq(&mts->lock);
 534         uctl->value.integer.value[0] = mts->time[idx];
 535         spin_unlock_irq(&mts->lock);
 536
 537         return 0;
 538 }
 539
 540 static int snd_mts64_ctl_smpte_time_put(struct snd_kcontrol *kctl,
 541                                         struct snd_ctl_elem_value *uctl)
 542 {
 543         struct mts64 *mts = snd_kcontrol_chip(kctl);
 544         int idx = kctl->private_value;
 545         unsigned int time = uctl->value.integer.value[0] % 60;
 546         int changed = 0;
 547
 548         spin_lock_irq(&mts->lock);
 549         if (mts->time[idx] != time) {
 550                 changed = 1;
 551                 mts->time[idx] = time;
 552         }
 553         spin_unlock_irq(&mts->lock);
 554
 555         return changed;
 556 }
 557
 558 static struct snd_kcontrol_new mts64_ctl_smpte_time_hours __devinitdata = {
 559         .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
 560         .name  = "SMPTE Time Hours",
 561         .index = 0,
 562         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 563         .private_value = 0,
 564         .info = snd_mts64_ctl_smpte_time_h_info,
 565         .get  = snd_mts64_ctl_smpte_time_get,
 566         .put  = snd_mts64_ctl_smpte_time_put
 567 };
 568
 569 static struct snd_kcontrol_new mts64_ctl_smpte_time_minutes __devinitdata = {
 570         .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
 571         .name  = "SMPTE Time Minutes",
 572         .index = 0,
 573         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 574         .private_value = 1,
 575         .info = snd_mts64_ctl_smpte_time_info,
 576         .get  = snd_mts64_ctl_smpte_time_get,
 577         .put  = snd_mts64_ctl_smpte_time_put
 578 };
 579
 580 static struct snd_kcontrol_new mts64_ctl_smpte_time_seconds __devinitdata = {
 581         .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
 582         .name  = "SMPTE Time Seconds",
 583         .index = 0,
 584         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 585         .private_value = 2,
 586         .info = snd_mts64_ctl_smpte_time_info,
 587         .get  = snd_mts64_ctl_smpte_time_get,
 588         .put  = snd_mts64_ctl_smpte_time_put
 589 };
 590
 591 static struct snd_kcontrol_new mts64_ctl_smpte_time_frames __devinitdata = {
 592         .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
 593         .name  = "SMPTE Time Frames",
 594         .index = 0,
 595         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 596         .private_value = 3,
 597         .info = snd_mts64_ctl_smpte_time_f_info,
 598         .get  = snd_mts64_ctl_smpte_time_get,
 599         .put  = snd_mts64_ctl_smpte_time_put
 600 };
 601
 602 /* FPS */
 603 static int snd_mts64_ctl_smpte_fps_info(struct snd_kcontrol *kctl,
 604                                         struct snd_ctl_elem_info *uinfo)
 605 {
 606         static char *texts[5] = { "24",
 607                                   "25",
 608                                   "29.97",
 609                                   "30D",
 610                                   "30"    };
 611
 612         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 613         uinfo->count = 1;
 614         uinfo->value.enumerated.items = 5;
 615         if (uinfo->value.enumerated.item > 4)
 616                 uinfo->value.enumerated.item = 4;
 617         strcpy(uinfo->value.enumerated.name,
 618                texts[uinfo->value.enumerated.item]);
 619
 620         return 0;
 621 }
 622
 623 static int snd_mts64_ctl_smpte_fps_get(struct snd_kcontrol *kctl,
 624                                        struct snd_ctl_elem_value *uctl)
 625 {
 626         struct mts64 *mts = snd_kcontrol_chip(kctl);
 627
 628         spin_lock_irq(&mts->lock);
 629         uctl->value.enumerated.item[0] = mts->fps;
 630         spin_unlock_irq(&mts->lock);
 631
 632         return 0;
 633 }
 634
 635 static int snd_mts64_ctl_smpte_fps_put(struct snd_kcontrol *kctl,
 636                                        struct snd_ctl_elem_value *uctl)
 637 {
 638         struct mts64 *mts = snd_kcontrol_chip(kctl);
 639         int changed = 0;
 640
 641         if (uctl->value.enumerated.item[0] >= 5)
 642                 return -EINVAL;
 643         spin_lock_irq(&mts->lock);
 644         if (mts->fps != uctl->value.enumerated.item[0]) {
 645                 changed = 1;
 646                 mts->fps = uctl->value.enumerated.item[0];
 647         }
 648         spin_unlock_irq(&mts->lock);
 649
 650         return changed;
 651 }
 652
 653 static struct snd_kcontrol_new mts64_ctl_smpte_fps __devinitdata = {
 654         .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
 655         .name  = "SMPTE Fps",
 656         .index = 0,
 657         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 658         .private_value = 0,
 659         .info  = snd_mts64_ctl_smpte_fps_info,
 660         .get   = snd_mts64_ctl_smpte_fps_get,
 661         .put   = snd_mts64_ctl_smpte_fps_put
 662 };
 663
 664
 665 static int __devinit snd_mts64_ctl_create(struct snd_card *card,
 666                                           struct mts64 *mts)
 667 {
 668         int err, i;
 669         static struct snd_kcontrol_new *control[] __devinitdata = {
 670                 &mts64_ctl_smpte_switch,
 671                 &mts64_ctl_smpte_time_hours,
 672                 &mts64_ctl_smpte_time_minutes,
 673                 &mts64_ctl_smpte_time_seconds,
 674                 &mts64_ctl_smpte_time_frames,
 675                 &mts64_ctl_smpte_fps,
 676                 NULL  };
 677
 678         for (i = 0; control[i]; ++i) {
 679                 err = snd_ctl_add(card, snd_ctl_new1(control[i], mts));
 680                 if (err < 0) {
 681                         snd_printd("Cannot create control: %s\n",
 682                                    control[i]->name);
 683                         return err;
 684                 }
 685         }
 686
 687         return 0;
 688 }
 689
 690 /*********************************************************************
 691  * Rawmidi
 692  *********************************************************************/
 693 #define MTS64_MODE_INPUT_TRIGGERED 0x01
 694
 695 static int snd_mts64_rawmidi_open(struct snd_rawmidi_substream *substream)
 696 {
 697         struct mts64 *mts = substream->rmidi->private_data;
 698
 699         if (mts->open_count == 0) {
 700                 /* We don't need a spinlock here, because this is just called
 701                    if the device has not been opened before.
 702                    So there aren't any IRQs from the device */
 703                 mts64_device_open(mts);
 704
 705                 msleep(50);
 706         }
 707         ++(mts->open_count);
 708
 709         return 0;
 710 }
 711
 712 static int snd_mts64_rawmidi_close(struct snd_rawmidi_substream *substream)
 713 {
 714         struct mts64 *mts = substream->rmidi->private_data;
 715         unsigned long flags;
 716
 717         --(mts->open_count);
 718         if (mts->open_count == 0) {
 719                 /* We need the spinlock_irqsave here because we can still
 720                    have IRQs at this point */
 721                 spin_lock_irqsave(&mts->lock, flags);
 722                 mts64_device_close(mts);
 723                 spin_unlock_irqrestore(&mts->lock, flags);
 724
 725                 msleep(500);
 726
 727         } else if (mts->open_count < 0)
 728                 mts->open_count = 0;
 729
 730         return 0;
 731 }
 732
 733 static void snd_mts64_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,
 734                                              int up)
 735 {
 736         struct mts64 *mts = substream->rmidi->private_data;
 737         u8 data;
 738         unsigned long flags;
 739
 740         spin_lock_irqsave(&mts->lock, flags);
 741         while (snd_rawmidi_transmit_peek(substream, &data, 1) == 1) {
 742                 mts64_write_midi(mts, data, substream->number+1);
 743                 snd_rawmidi_transmit_ack(substream, 1);
 744         }
 745         spin_unlock_irqrestore(&mts->lock, flags);
 746 }
 747
 748 static void snd_mts64_rawmidi_input_trigger(struct snd_rawmidi_substream *substream,
 749                                             int up)
 750 {
 751         struct mts64 *mts = substream->rmidi->private_data;
 752         unsigned long flags;
 753
 754         spin_lock_irqsave(&mts->lock, flags);
 755         if (up)
 756                 mts->mode[substream->number] |= MTS64_MODE_INPUT_TRIGGERED;
 757         else
 758                 mts->mode[substream->number] &= ~MTS64_MODE_INPUT_TRIGGERED;
 759
 760         spin_unlock_irqrestore(&mts->lock, flags);
 761 }
 762
 763 static struct snd_rawmidi_ops snd_mts64_rawmidi_output_ops = {
 764         .open    = snd_mts64_rawmidi_open,
 765         .close   = snd_mts64_rawmidi_close,
 766         .trigger = snd_mts64_rawmidi_output_trigger
 767 };
 768
 769 static struct snd_rawmidi_ops snd_mts64_rawmidi_input_ops = {
 770         .open    = snd_mts64_rawmidi_open,
 771         .close   = snd_mts64_rawmidi_close,
 772         .trigger = snd_mts64_rawmidi_input_trigger
 773 };
 774
 775 /* Create and initialize the rawmidi component */
 776 static int __devinit snd_mts64_rawmidi_create(struct snd_card *card)
 777 {
 778         struct mts64 *mts = card->private_data;
 779         struct snd_rawmidi *rmidi;
 780         struct snd_rawmidi_substream *substream;
 781         struct list_head *list;
 782         int err;
 783
 784         err = snd_rawmidi_new(card, CARD_NAME, 0,
 785                               MTS64_NUM_OUTPUT_PORTS,
 786                               MTS64_NUM_INPUT_PORTS,
 787                               &rmidi);
 788         if (err < 0)
 789                 return err;
 790
 791         rmidi->private_data = mts;
 792         strcpy(rmidi->name, CARD_NAME);
 793         rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
 794                             SNDRV_RAWMIDI_INFO_INPUT |
 795                             SNDRV_RAWMIDI_INFO_DUPLEX;
 796
 797         mts->rmidi = rmidi;
 798
 799         /* register rawmidi ops */
 800         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
 801                             &snd_mts64_rawmidi_output_ops);
 802         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
 803                             &snd_mts64_rawmidi_input_ops);
 804
 805         /* name substreams */
 806         /* output */
 807         list_for_each(list,
 808                       &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
 809                 substream = list_entry(list, struct snd_rawmidi_substream, list);
 810                 sprintf(substream->name,
 811                         "Miditerminal %d", substream->number+1);
 812         }
 813         /* input */
 814         list_for_each(list,
 815                       &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
 816                 substream = list_entry(list, struct snd_rawmidi_substream, list);
 817                 mts->midi_input_substream[substream->number] = substream;
 818                 switch(substream->number) {
 819                 case MTS64_SMPTE_SUBSTREAM:
 820                         strcpy(substream->name, "Miditerminal SMPTE");
 821                         break;
 822                 default:
 823                         sprintf(substream->name,
 824                                 "Miditerminal %d", substream->number+1);
 825                 }
 826         }
 827
 828         /* controls */
 829         err = snd_mts64_ctl_create(card, mts);
 830
 831         return err;
 832 }
 833
 834 /*********************************************************************
 835  * parport stuff
 836  *********************************************************************/
 837 static void snd_mts64_interrupt(void *private)
 838 {
 839         struct mts64 *mts = ((struct snd_card*)private)->private_data;
 840         u16 ret;
 841         u8 status, data;
 842         struct snd_rawmidi_substream *substream;
 843
 844         spin_lock(&mts->lock);
 845         ret = mts64_read(mts->pardev->port);
 846         data = ret & 0x00ff;
 847         status = ret >> 8;
 848
 849         if (status & MTS64_STAT_PORT) {
 850                 mts->current_midi_input_port = mts64_map_midi_input(data);
 851         } else {
 852                 if (mts->current_midi_input_port == -1)
 853                         goto __out;
 854                 substream = mts->midi_input_substream[mts->current_midi_input_port];
 855                 if (mts->mode[substream->number] & MTS64_MODE_INPUT_TRIGGERED)
 856                         snd_rawmidi_receive(substream, &data, 1);
 857         }
 858 __out:
 859         spin_unlock(&mts->lock);
 860 }
 861
 862 static int __devinit snd_mts64_probe_port(struct parport *p)
 863 {
 864         struct pardevice *pardev;
 865         int res;
 866
 867         pardev = parport_register_device(p, DRIVER_NAME,
 868                                          NULL, NULL, NULL,
 869                                          0, NULL);
 870         if (!pardev)
 871                 return -EIO;
 872
 873         if (parport_claim(pardev)) {
 874                 parport_unregister_device(pardev);
 875                 return -EIO;
 876         }
 877
 878         res = mts64_probe(p);
 879
 880         parport_release(pardev);
 881         parport_unregister_device(pardev);
 882
 883         return res;
 884 }
 885
 886 static void __devinit snd_mts64_attach(struct parport *p)
 887 {
 888         struct platform_device *device;
 889
 890         device = platform_device_alloc(PLATFORM_DRIVER, device_count);
 891         if (!device)
 892                 return;
 893
 894         /* Temporary assignment to forward the parport */
 895         platform_set_drvdata(device, p);
 896
 897         if (platform_device_add(device) < 0) {
 898                 platform_device_put(device);
 899                 return;
 900         }
 901
 902         /* Since we dont get the return value of probe
 903          * We need to check if device probing succeeded or not */
 904         if (!platform_get_drvdata(device)) {
 905                 platform_device_unregister(device);
 906                 return;
 907         }
 908
 909         /* register device in global table */
 910         platform_devices[device_count] = device;
 911         device_count++;
 912 }
 913
 914 static void snd_mts64_detach(struct parport *p)
 915 {
 916         /* nothing to do here */
 917 }
 918
 919 static struct parport_driver mts64_parport_driver = {
 920         .name   = "mts64",
 921         .attach = snd_mts64_attach,
 922         .detach = snd_mts64_detach
 923 };
 924
 925 /*********************************************************************
 926  * platform stuff
 927  *********************************************************************/
 928 static void snd_mts64_card_private_free(struct snd_card *card)
 929 {
 930         struct mts64 *mts = card->private_data;
 931         struct pardevice *pardev = mts->pardev;
 932
 933         if (pardev) {
 934                 if (mts->pardev_claimed)
 935                         parport_release(pardev);
 936                 parport_unregister_device(pardev);
 937         }
 938
 939         snd_mts64_free(mts);
 940 }
 941
 942 static int __devinit snd_mts64_probe(struct platform_device *pdev)
 943 {
 944         struct pardevice *pardev;
 945         struct parport *p;
 946         int dev = pdev->id;
 947         struct snd_card *card = NULL;
 948         struct mts64 *mts = NULL;
 949         int err;
 950
 951         p = platform_get_drvdata(pdev);
 952         platform_set_drvdata(pdev, NULL);
 953
 954         if (dev >= SNDRV_CARDS)
 955                 return -ENODEV;
 956         if (!enable[dev])
 957                 return -ENOENT;
 958         if ((err = snd_mts64_probe_port(p)) < 0)
 959                 return err;
 960
 961         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
 962         if (err < 0) {
 963                 snd_printd("Cannot create card\n");
 964                 return err;
 965         }
 966         strcpy(card->driver, DRIVER_NAME);
 967         strcpy(card->shortname, "ESI " CARD_NAME);
 968         sprintf(card->longname,  "%s at 0x%lx, irq %i",
 969                 card->shortname, p->base, p->irq);
 970
 971         pardev = parport_register_device(p,                   /* port */
 972                                          DRIVER_NAME,         /* name */
 973                                          NULL,                /* preempt */
 974                                          NULL,                /* wakeup */
 975                                          snd_mts64_interrupt, /* ISR */
 976                                          PARPORT_DEV_EXCL,    /* flags */
 977                                          (void *)card);       /* private */
 978         if (pardev == NULL) {
 979                 snd_printd("Cannot register pardevice\n");
 980                 err = -EIO;
 981                 goto __err;
 982         }
 983
 984         if ((err = snd_mts64_create(card, pardev, &mts)) < 0) {
 985                 snd_printd("Cannot create main component\n");
 986                 parport_unregister_device(pardev);
 987                 goto __err;
 988         }
 989         card->private_data = mts;
 990         card->private_free = snd_mts64_card_private_free;
 991
 992         if ((err = snd_mts64_rawmidi_create(card)) < 0) {
 993                 snd_printd("Creating Rawmidi component failed\n");
 994                 goto __err;
 995         }
 996
 997         /* claim parport */
 998         if (parport_claim(pardev)) {
 999                 snd_printd("Cannot claim parport 0x%lx\n", pardev->port->base);
1000                 err = -EIO;
1001                 goto __err;
1002         }
1003         mts->pardev_claimed = 1;
1004
1005         /* init device */
1006         if ((err = mts64_device_init(p)) < 0)
1007                 goto __err;
1008
1009         platform_set_drvdata(pdev, card);
1010
1011         snd_card_set_dev(card, &pdev->dev);
1012
1013         /* At this point card will be usable */
1014         if ((err = snd_card_register(card)) < 0) {
1015                 snd_printd("Cannot register card\n");
1016                 goto __err;
1017         }
1018
1019         snd_printk(KERN_INFO "ESI Miditerminal 4140 on 0x%lx\n", p->base);
1020         return 0;
1021
1022 __err:
1023         snd_card_free(card);
1024         return err;
1025 }
1026
1027 static int __devexit snd_mts64_remove(struct platform_device *pdev)
1028 {
1029         struct snd_card *card = platform_get_drvdata(pdev);
1030
1031         if (card)
1032                 snd_card_free(card);
1033
1034         return 0;
1035 }
1036
1037
1038 static struct platform_driver snd_mts64_driver = {
1039         .probe  = snd_mts64_probe,
1040         .remove = __devexit_p(snd_mts64_remove),
1041         .driver = {
1042                 .name = PLATFORM_DRIVER
1043         }
1044 };
1045
1046 /*********************************************************************
1047  * module init stuff
1048  *********************************************************************/
1049 static void snd_mts64_unregister_all(void)
1050 {
1051         int i;
1052
1053         for (i = 0; i < SNDRV_CARDS; ++i) {
1054                 if (platform_devices[i]) {
1055                         platform_device_unregister(platform_devices[i]);
1056                         platform_devices[i] = NULL;
1057                 }
1058         }
1059         platform_driver_unregister(&snd_mts64_driver);
1060         parport_unregister_driver(&mts64_parport_driver);
1061 }
1062
1063 static int __init snd_mts64_module_init(void)
1064 {
1065         int err;
1066
1067         if ((err = platform_driver_register(&snd_mts64_driver)) < 0)
1068                 return err;
1069
1070         if (parport_register_driver(&mts64_parport_driver) != 0) {
1071                 platform_driver_unregister(&snd_mts64_driver);
1072                 return -EIO;
1073         }
1074
1075         if (device_count == 0) {
1076                 snd_mts64_unregister_all();
1077                 return -ENODEV;
1078         }
1079
1080         return 0;
1081 }
1082
1083 static void __exit snd_mts64_module_exit(void)
1084 {
1085         snd_mts64_unregister_all();
1086 }
1087
1088 module_init(snd_mts64_module_init);
1089 module_exit(snd_mts64_module_exit);