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