sound/firewire/speakers.c

   1 /*
   2  * OXFW970-based speakers driver
   3  *
   4  * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
   5  * Licensed under the terms of the GNU General Public License, version 2.
   6  */
   7
   8 #include <linux/device.h>
   9 #include <linux/firewire.h>
  10 #include <linux/firewire-constants.h>
  11 #include <linux/module.h>
  12 #include <linux/mod_devicetable.h>
  13 #include <linux/mutex.h>
  14 #include <linux/slab.h>
  15 #include <sound/control.h>
  16 #include <sound/core.h>
  17 #include <sound/initval.h>
  18 #include <sound/pcm.h>
  19 #include <sound/pcm_params.h>
  20 #include "cmp.h"
  21 #include "fcp.h"
  22 #include "amdtp.h"
  23 #include "lib.h"
  24
  25 #define OXFORD_FIRMWARE_ID_ADDRESS      (CSR_REGISTER_BASE + 0x50000)
  26 /* 0x970?vvvv or 0x971?vvvv, where vvvv = firmware version */
  27
  28 #define OXFORD_HARDWARE_ID_ADDRESS      (CSR_REGISTER_BASE + 0x90020)
  29 #define OXFORD_HARDWARE_ID_OXFW970      0x39443841
  30 #define OXFORD_HARDWARE_ID_OXFW971      0x39373100
  31
  32 #define VENDOR_GRIFFIN          0x001292
  33 #define VENDOR_LACIE            0x00d04b
  34
  35 #define SPECIFIER_1394TA        0x00a02d
  36 #define VERSION_AVC             0x010001
  37
  38 struct device_info {
  39         const char *driver_name;
  40         const char *short_name;
  41         const char *long_name;
  42         int (*pcm_constraints)(struct snd_pcm_runtime *runtime);
  43         unsigned int mixer_channels;
  44         u8 mute_fb_id;
  45         u8 volume_fb_id;
  46 };
  47
  48 struct fwspk {
  49         struct snd_card *card;
  50         struct fw_unit *unit;
  51         const struct device_info *device_info;
  52         struct mutex mutex;
  53         struct cmp_connection connection;
  54         struct amdtp_stream stream;
  55         bool mute;
  56         s16 volume[6];
  57         s16 volume_min;
  58         s16 volume_max;
  59 };
  60
  61 MODULE_DESCRIPTION("FireWire speakers driver");
  62 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
  63 MODULE_LICENSE("GPL v2");
  64
  65 static int firewave_rate_constraint(struct snd_pcm_hw_params *params,
  66                                     struct snd_pcm_hw_rule *rule)
  67 {
  68         static unsigned int stereo_rates[] = { 48000, 96000 };
  69         struct snd_interval *channels =
  70                         hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
  71         struct snd_interval *rate =
  72                         hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
  73
  74         /* two channels work only at 48/96 kHz */
  75         if (snd_interval_max(channels) < 6)
  76                 return snd_interval_list(rate, 2, stereo_rates, 0);
  77         return 0;
  78 }
  79
  80 static int firewave_channels_constraint(struct snd_pcm_hw_params *params,
  81                                         struct snd_pcm_hw_rule *rule)
  82 {
  83         static const struct snd_interval all_channels = { .min = 6, .max = 6 };
  84         struct snd_interval *rate =
  85                         hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
  86         struct snd_interval *channels =
  87                         hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
  88
  89         /* 32/44.1 kHz work only with all six channels */
  90         if (snd_interval_max(rate) < 48000)
  91                 return snd_interval_refine(channels, &all_channels);
  92         return 0;
  93 }
  94
  95 static int firewave_constraints(struct snd_pcm_runtime *runtime)
  96 {
  97         static unsigned int channels_list[] = { 2, 6 };
  98         static struct snd_pcm_hw_constraint_list channels_list_constraint = {
  99                 .count = 2,
 100                 .list = channels_list,
 101         };
 102         int err;
 103
 104         runtime->hw.rates = SNDRV_PCM_RATE_32000 |
 105                             SNDRV_PCM_RATE_44100 |
 106                             SNDRV_PCM_RATE_48000 |
 107                             SNDRV_PCM_RATE_96000;
 108         runtime->hw.channels_max = 6;
 109
 110         err = snd_pcm_hw_constraint_list(runtime, 0,
 111                                          SNDRV_PCM_HW_PARAM_CHANNELS,
 112                                          &channels_list_constraint);
 113         if (err < 0)
 114                 return err;
 115         err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 116                                   firewave_rate_constraint, NULL,
 117                                   SNDRV_PCM_HW_PARAM_CHANNELS, -1);
 118         if (err < 0)
 119                 return err;
 120         err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
 121                                   firewave_channels_constraint, NULL,
 122                                   SNDRV_PCM_HW_PARAM_RATE, -1);
 123         if (err < 0)
 124                 return err;
 125
 126         return 0;
 127 }
 128
 129 static int lacie_speakers_constraints(struct snd_pcm_runtime *runtime)
 130 {
 131         runtime->hw.rates = SNDRV_PCM_RATE_32000 |
 132                             SNDRV_PCM_RATE_44100 |
 133                             SNDRV_PCM_RATE_48000 |
 134                             SNDRV_PCM_RATE_88200 |
 135                             SNDRV_PCM_RATE_96000;
 136
 137         return 0;
 138 }
 139
 140 static int fwspk_open(struct snd_pcm_substream *substream)
 141 {
 142         static const struct snd_pcm_hardware hardware = {
 143                 .info = SNDRV_PCM_INFO_MMAP |
 144                         SNDRV_PCM_INFO_MMAP_VALID |
 145                         SNDRV_PCM_INFO_BATCH |
 146                         SNDRV_PCM_INFO_INTERLEAVED |
 147                         SNDRV_PCM_INFO_BLOCK_TRANSFER,
 148                 .formats = AMDTP_OUT_PCM_FORMAT_BITS,
 149                 .channels_min = 2,
 150                 .channels_max = 2,
 151                 .buffer_bytes_max = 4 * 1024 * 1024,
 152                 .period_bytes_min = 1,
 153                 .period_bytes_max = UINT_MAX,
 154                 .periods_min = 1,
 155                 .periods_max = UINT_MAX,
 156         };
 157         struct fwspk *fwspk = substream->private_data;
 158         struct snd_pcm_runtime *runtime = substream->runtime;
 159         int err;
 160
 161         runtime->hw = hardware;
 162
 163         err = fwspk->device_info->pcm_constraints(runtime);
 164         if (err < 0)
 165                 return err;
 166         err = snd_pcm_limit_hw_rates(runtime);
 167         if (err < 0)
 168                 return err;
 169
 170         err = amdtp_stream_add_pcm_hw_constraints(&fwspk->stream, runtime);
 171         if (err < 0)
 172                 return err;
 173
 174         return 0;
 175 }
 176
 177 static int fwspk_close(struct snd_pcm_substream *substream)
 178 {
 179         return 0;
 180 }
 181
 182 static void fwspk_stop_stream(struct fwspk *fwspk)
 183 {
 184         if (amdtp_stream_running(&fwspk->stream)) {
 185                 amdtp_stream_stop(&fwspk->stream);
 186                 cmp_connection_break(&fwspk->connection);
 187         }
 188 }
 189
 190 static int fwspk_set_rate(struct fwspk *fwspk, unsigned int sfc)
 191 {
 192         u8 *buf;
 193         int err;
 194
 195         buf = kmalloc(8, GFP_KERNEL);
 196         if (!buf)
 197                 return -ENOMEM;
 198
 199         buf[0] = 0x00;          /* AV/C, CONTROL */
 200         buf[1] = 0xff;          /* unit */
 201         buf[2] = 0x19;          /* INPUT PLUG SIGNAL FORMAT */
 202         buf[3] = 0x00;          /* plug 0 */
 203         buf[4] = 0x90;          /* format: audio */
 204         buf[5] = 0x00 | sfc;    /* AM824, frequency */
 205         buf[6] = 0xff;          /* SYT (not used) */
 206         buf[7] = 0xff;
 207
 208         err = fcp_avc_transaction(fwspk->unit, buf, 8, buf, 8,
 209                                   BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5));
 210         if (err < 0)
 211                 goto error;
 212         if (err < 6 || buf[0] != 0x09 /* ACCEPTED */) {
 213                 dev_err(&fwspk->unit->device, "failed to set sample rate\n");
 214                 err = -EIO;
 215                 goto error;
 216         }
 217
 218         err = 0;
 219
 220 error:
 221         kfree(buf);
 222
 223         return err;
 224 }
 225
 226 static int fwspk_hw_params(struct snd_pcm_substream *substream,
 227                            struct snd_pcm_hw_params *hw_params)
 228 {
 229         struct fwspk *fwspk = substream->private_data;
 230         int err;
 231
 232         mutex_lock(&fwspk->mutex);
 233         fwspk_stop_stream(fwspk);
 234         mutex_unlock(&fwspk->mutex);
 235
 236         err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
 237                                                params_buffer_bytes(hw_params));
 238         if (err < 0)
 239                 goto error;
 240
 241         amdtp_stream_set_parameters(&fwspk->stream,
 242                                     params_rate(hw_params),
 243                                     params_channels(hw_params),
 244                                     0);
 245
 246         amdtp_stream_set_pcm_format(&fwspk->stream,
 247                                     params_format(hw_params));
 248
 249         err = fwspk_set_rate(fwspk, fwspk->stream.sfc);
 250         if (err < 0)
 251                 goto err_buffer;
 252
 253         return 0;
 254
 255 err_buffer:
 256         snd_pcm_lib_free_vmalloc_buffer(substream);
 257 error:
 258         return err;
 259 }
 260
 261 static int fwspk_hw_free(struct snd_pcm_substream *substream)
 262 {
 263         struct fwspk *fwspk = substream->private_data;
 264
 265         mutex_lock(&fwspk->mutex);
 266         fwspk_stop_stream(fwspk);
 267         mutex_unlock(&fwspk->mutex);
 268
 269         return snd_pcm_lib_free_vmalloc_buffer(substream);
 270 }
 271
 272 static int fwspk_prepare(struct snd_pcm_substream *substream)
 273 {
 274         struct fwspk *fwspk = substream->private_data;
 275         int err;
 276
 277         mutex_lock(&fwspk->mutex);
 278
 279         if (amdtp_streaming_error(&fwspk->stream))
 280                 fwspk_stop_stream(fwspk);
 281
 282         if (!amdtp_stream_running(&fwspk->stream)) {
 283                 err = cmp_connection_establish(&fwspk->connection,
 284                         amdtp_stream_get_max_payload(&fwspk->stream));
 285                 if (err < 0)
 286                         goto err_mutex;
 287
 288                 err = amdtp_stream_start(&fwspk->stream,
 289                                          fwspk->connection.resources.channel,
 290                                          fwspk->connection.speed);
 291                 if (err < 0)
 292                         goto err_connection;
 293         }
 294
 295         mutex_unlock(&fwspk->mutex);
 296
 297         amdtp_stream_pcm_prepare(&fwspk->stream);
 298
 299         return 0;
 300
 301 err_connection:
 302         cmp_connection_break(&fwspk->connection);
 303 err_mutex:
 304         mutex_unlock(&fwspk->mutex);
 305
 306         return err;
 307 }
 308
 309 static int fwspk_trigger(struct snd_pcm_substream *substream, int cmd)
 310 {
 311         struct fwspk *fwspk = substream->private_data;
 312         struct snd_pcm_substream *pcm;
 313
 314         switch (cmd) {
 315         case SNDRV_PCM_TRIGGER_START:
 316                 pcm = substream;
 317                 break;
 318         case SNDRV_PCM_TRIGGER_STOP:
 319                 pcm = NULL;
 320                 break;
 321         default:
 322                 return -EINVAL;
 323         }
 324         amdtp_stream_pcm_trigger(&fwspk->stream, pcm);
 325         return 0;
 326 }
 327
 328 static snd_pcm_uframes_t fwspk_pointer(struct snd_pcm_substream *substream)
 329 {
 330         struct fwspk *fwspk = substream->private_data;
 331
 332         return amdtp_stream_pcm_pointer(&fwspk->stream);
 333 }
 334
 335 static int fwspk_create_pcm(struct fwspk *fwspk)
 336 {
 337         static struct snd_pcm_ops ops = {
 338                 .open      = fwspk_open,
 339                 .close     = fwspk_close,
 340                 .ioctl     = snd_pcm_lib_ioctl,
 341                 .hw_params = fwspk_hw_params,
 342                 .hw_free   = fwspk_hw_free,
 343                 .prepare   = fwspk_prepare,
 344                 .trigger   = fwspk_trigger,
 345                 .pointer   = fwspk_pointer,
 346                 .page      = snd_pcm_lib_get_vmalloc_page,
 347                 .mmap      = snd_pcm_lib_mmap_vmalloc,
 348         };
 349         struct snd_pcm *pcm;
 350         int err;
 351
 352         err = snd_pcm_new(fwspk->card, "OXFW970", 0, 1, 0, &pcm);
 353         if (err < 0)
 354                 return err;
 355         pcm->private_data = fwspk;
 356         strcpy(pcm->name, fwspk->device_info->short_name);
 357         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &ops);
 358         return 0;
 359 }
 360
 361 enum control_action { CTL_READ, CTL_WRITE };
 362 enum control_attribute {
 363         CTL_MIN         = 0x02,
 364         CTL_MAX         = 0x03,
 365         CTL_CURRENT     = 0x10,
 366 };
 367
 368 static int fwspk_mute_command(struct fwspk *fwspk, bool *value,
 369                               enum control_action action)
 370 {
 371         u8 *buf;
 372         u8 response_ok;
 373         int err;
 374
 375         buf = kmalloc(11, GFP_KERNEL);
 376         if (!buf)
 377                 return -ENOMEM;
 378
 379         if (action == CTL_READ) {
 380                 buf[0] = 0x01;          /* AV/C, STATUS */
 381                 response_ok = 0x0c;     /*       STABLE */
 382         } else {
 383                 buf[0] = 0x00;          /* AV/C, CONTROL */
 384                 response_ok = 0x09;     /*       ACCEPTED */
 385         }
 386         buf[1] = 0x08;                  /* audio unit 0 */
 387         buf[2] = 0xb8;                  /* FUNCTION BLOCK */
 388         buf[3] = 0x81;                  /* function block type: feature */
 389         buf[4] = fwspk->device_info->mute_fb_id; /* function block ID */
 390         buf[5] = 0x10;                  /* control attribute: current */
 391         buf[6] = 0x02;                  /* selector length */
 392         buf[7] = 0x00;                  /* audio channel number */
 393         buf[8] = 0x01;                  /* control selector: mute */
 394         buf[9] = 0x01;                  /* control data length */
 395         if (action == CTL_READ)
 396                 buf[10] = 0xff;
 397         else
 398                 buf[10] = *value ? 0x70 : 0x60;
 399
 400         err = fcp_avc_transaction(fwspk->unit, buf, 11, buf, 11, 0x3fe);
 401         if (err < 0)
 402                 goto error;
 403         if (err < 11) {
 404                 dev_err(&fwspk->unit->device, "short FCP response\n");
 405                 err = -EIO;
 406                 goto error;
 407         }
 408         if (buf[0] != response_ok) {
 409                 dev_err(&fwspk->unit->device, "mute command failed\n");
 410                 err = -EIO;
 411                 goto error;
 412         }
 413         if (action == CTL_READ)
 414                 *value = buf[10] == 0x70;
 415
 416         err = 0;
 417
 418 error:
 419         kfree(buf);
 420
 421         return err;
 422 }
 423
 424 static int fwspk_volume_command(struct fwspk *fwspk, s16 *value,
 425                                 unsigned int channel,
 426                                 enum control_attribute attribute,
 427                                 enum control_action action)
 428 {
 429         u8 *buf;
 430         u8 response_ok;
 431         int err;
 432
 433         buf = kmalloc(12, GFP_KERNEL);
 434         if (!buf)
 435                 return -ENOMEM;
 436
 437         if (action == CTL_READ) {
 438                 buf[0] = 0x01;          /* AV/C, STATUS */
 439                 response_ok = 0x0c;     /*       STABLE */
 440         } else {
 441                 buf[0] = 0x00;          /* AV/C, CONTROL */
 442                 response_ok = 0x09;     /*       ACCEPTED */
 443         }
 444         buf[1] = 0x08;                  /* audio unit 0 */
 445         buf[2] = 0xb8;                  /* FUNCTION BLOCK */
 446         buf[3] = 0x81;                  /* function block type: feature */
 447         buf[4] = fwspk->device_info->volume_fb_id; /* function block ID */
 448         buf[5] = attribute;             /* control attribute */
 449         buf[6] = 0x02;                  /* selector length */
 450         buf[7] = channel;               /* audio channel number */
 451         buf[8] = 0x02;                  /* control selector: volume */
 452         buf[9] = 0x02;                  /* control data length */
 453         if (action == CTL_READ) {
 454                 buf[10] = 0xff;
 455                 buf[11] = 0xff;
 456         } else {
 457                 buf[10] = *value >> 8;
 458                 buf[11] = *value;
 459         }
 460
 461         err = fcp_avc_transaction(fwspk->unit, buf, 12, buf, 12, 0x3fe);
 462         if (err < 0)
 463                 goto error;
 464         if (err < 12) {
 465                 dev_err(&fwspk->unit->device, "short FCP response\n");
 466                 err = -EIO;
 467                 goto error;
 468         }
 469         if (buf[0] != response_ok) {
 470                 dev_err(&fwspk->unit->device, "volume command failed\n");
 471                 err = -EIO;
 472                 goto error;
 473         }
 474         if (action == CTL_READ)
 475                 *value = (buf[10] << 8) | buf[11];
 476
 477         err = 0;
 478
 479 error:
 480         kfree(buf);
 481
 482         return err;
 483 }
 484
 485 static int fwspk_mute_get(struct snd_kcontrol *control,
 486                           struct snd_ctl_elem_value *value)
 487 {
 488         struct fwspk *fwspk = control->private_data;
 489
 490         value->value.integer.value[0] = !fwspk->mute;
 491
 492         return 0;
 493 }
 494
 495 static int fwspk_mute_put(struct snd_kcontrol *control,
 496                           struct snd_ctl_elem_value *value)
 497 {
 498         struct fwspk *fwspk = control->private_data;
 499         bool mute;
 500         int err;
 501
 502         mute = !value->value.integer.value[0];
 503
 504         if (mute == fwspk->mute)
 505                 return 0;
 506
 507         err = fwspk_mute_command(fwspk, &mute, CTL_WRITE);
 508         if (err < 0)
 509                 return err;
 510         fwspk->mute = mute;
 511
 512         return 1;
 513 }
 514
 515 static int fwspk_volume_info(struct snd_kcontrol *control,
 516                              struct snd_ctl_elem_info *info)
 517 {
 518         struct fwspk *fwspk = control->private_data;
 519
 520         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 521         info->count = fwspk->device_info->mixer_channels;
 522         info->value.integer.min = fwspk->volume_min;
 523         info->value.integer.max = fwspk->volume_max;
 524
 525         return 0;
 526 }
 527
 528 static const u8 channel_map[6] = { 0, 1, 4, 5, 2, 3 };
 529
 530 static int fwspk_volume_get(struct snd_kcontrol *control,
 531                             struct snd_ctl_elem_value *value)
 532 {
 533         struct fwspk *fwspk = control->private_data;
 534         unsigned int i;
 535
 536         for (i = 0; i < fwspk->device_info->mixer_channels; ++i)
 537                 value->value.integer.value[channel_map[i]] = fwspk->volume[i];
 538
 539         return 0;
 540 }
 541
 542 static int fwspk_volume_put(struct snd_kcontrol *control,
 543                           struct snd_ctl_elem_value *value)
 544 {
 545         struct fwspk *fwspk = control->private_data;
 546         unsigned int i, changed_channels;
 547         bool equal_values = true;
 548         s16 volume;
 549         int err;
 550
 551         for (i = 0; i < fwspk->device_info->mixer_channels; ++i) {
 552                 if (value->value.integer.value[i] < fwspk->volume_min ||
 553                     value->value.integer.value[i] > fwspk->volume_max)
 554                         return -EINVAL;
 555                 if (value->value.integer.value[i] !=
 556                     value->value.integer.value[0])
 557                         equal_values = false;
 558         }
 559
 560         changed_channels = 0;
 561         for (i = 0; i < fwspk->device_info->mixer_channels; ++i)
 562                 if (value->value.integer.value[channel_map[i]] !=
 563                                                         fwspk->volume[i])
 564                         changed_channels |= 1 << (i + 1);
 565
 566         if (equal_values && changed_channels != 0)
 567                 changed_channels = 1 << 0;
 568
 569         for (i = 0; i <= fwspk->device_info->mixer_channels; ++i) {
 570                 volume = value->value.integer.value[channel_map[i ? i - 1 : 0]];
 571                 if (changed_channels & (1 << i)) {
 572                         err = fwspk_volume_command(fwspk, &volume, i,
 573                                                    CTL_CURRENT, CTL_WRITE);
 574                         if (err < 0)
 575                                 return err;
 576                 }
 577                 if (i > 0)
 578                         fwspk->volume[i - 1] = volume;
 579         }
 580
 581         return changed_channels != 0;
 582 }
 583
 584 static int fwspk_create_mixer(struct fwspk *fwspk)
 585 {
 586         static const struct snd_kcontrol_new controls[] = {
 587                 {
 588                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 589                         .name = "PCM Playback Switch",
 590                         .info = snd_ctl_boolean_mono_info,
 591                         .get = fwspk_mute_get,
 592                         .put = fwspk_mute_put,
 593                 },
 594                 {
 595                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 596                         .name = "PCM Playback Volume",
 597                         .info = fwspk_volume_info,
 598                         .get = fwspk_volume_get,
 599                         .put = fwspk_volume_put,
 600                 },
 601         };
 602         unsigned int i, first_ch;
 603         int err;
 604
 605         err = fwspk_volume_command(fwspk, &fwspk->volume_min,
 606                                    0, CTL_MIN, CTL_READ);
 607         if (err < 0)
 608                 return err;
 609         err = fwspk_volume_command(fwspk, &fwspk->volume_max,
 610                                    0, CTL_MAX, CTL_READ);
 611         if (err < 0)
 612                 return err;
 613
 614         err = fwspk_mute_command(fwspk, &fwspk->mute, CTL_READ);
 615         if (err < 0)
 616                 return err;
 617
 618         first_ch = fwspk->device_info->mixer_channels == 1 ? 0 : 1;
 619         for (i = 0; i < fwspk->device_info->mixer_channels; ++i) {
 620                 err = fwspk_volume_command(fwspk, &fwspk->volume[i],
 621                                            first_ch + i, CTL_CURRENT, CTL_READ);
 622                 if (err < 0)
 623                         return err;
 624         }
 625
 626         for (i = 0; i < ARRAY_SIZE(controls); ++i) {
 627                 err = snd_ctl_add(fwspk->card,
 628                                   snd_ctl_new1(&controls[i], fwspk));
 629                 if (err < 0)
 630                         return err;
 631         }
 632
 633         return 0;
 634 }
 635
 636 static u32 fwspk_read_firmware_version(struct fw_unit *unit)
 637 {
 638         __be32 data;
 639         int err;
 640
 641         err = snd_fw_transaction(unit, TCODE_READ_QUADLET_REQUEST,
 642                                  OXFORD_FIRMWARE_ID_ADDRESS, &data, 4, 0);
 643         return err >= 0 ? be32_to_cpu(data) : 0;
 644 }
 645
 646 static void fwspk_card_free(struct snd_card *card)
 647 {
 648         struct fwspk *fwspk = card->private_data;
 649
 650         amdtp_stream_destroy(&fwspk->stream);
 651         cmp_connection_destroy(&fwspk->connection);
 652         fw_unit_put(fwspk->unit);
 653         mutex_destroy(&fwspk->mutex);
 654 }
 655
 656 static int fwspk_probe(struct fw_unit *unit,
 657                        const struct ieee1394_device_id *id)
 658 {
 659         struct fw_device *fw_dev = fw_parent_device(unit);
 660         struct snd_card *card;
 661         struct fwspk *fwspk;
 662         u32 firmware;
 663         int err;
 664
 665         err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
 666                            sizeof(*fwspk), &card);
 667         if (err < 0)
 668                 return err;
 669
 670         fwspk = card->private_data;
 671         fwspk->card = card;
 672         mutex_init(&fwspk->mutex);
 673         fwspk->unit = fw_unit_get(unit);
 674         fwspk->device_info = (const struct device_info *)id->driver_data;
 675
 676         err = cmp_connection_init(&fwspk->connection, unit, 0);
 677         if (err < 0)
 678                 goto err_unit;
 679
 680         err = amdtp_stream_init(&fwspk->stream, unit, AMDTP_OUT_STREAM,
 681                                 CIP_NONBLOCKING);
 682         if (err < 0)
 683                 goto err_connection;
 684
 685         card->private_free = fwspk_card_free;
 686
 687         strcpy(card->driver, fwspk->device_info->driver_name);
 688         strcpy(card->shortname, fwspk->device_info->short_name);
 689         firmware = fwspk_read_firmware_version(unit);
 690         snprintf(card->longname, sizeof(card->longname),
 691                  "%s (OXFW%x %04x), GUID %08x%08x at %s, S%d",
 692                  fwspk->device_info->long_name,
 693                  firmware >> 20, firmware & 0xffff,
 694                  fw_dev->config_rom[3], fw_dev->config_rom[4],
 695                  dev_name(&unit->device), 100 << fw_dev->max_speed);
 696         strcpy(card->mixername, "OXFW970");
 697
 698         err = fwspk_create_pcm(fwspk);
 699         if (err < 0)
 700                 goto error;
 701
 702         err = fwspk_create_mixer(fwspk);
 703         if (err < 0)
 704                 goto error;
 705
 706         err = snd_card_register(card);
 707         if (err < 0)
 708                 goto error;
 709
 710         dev_set_drvdata(&unit->device, fwspk);
 711
 712         return 0;
 713
 714 err_connection:
 715         cmp_connection_destroy(&fwspk->connection);
 716 err_unit:
 717         fw_unit_put(fwspk->unit);
 718         mutex_destroy(&fwspk->mutex);
 719 error:
 720         snd_card_free(card);
 721         return err;
 722 }
 723
 724 static void fwspk_bus_reset(struct fw_unit *unit)
 725 {
 726         struct fwspk *fwspk = dev_get_drvdata(&unit->device);
 727
 728         fcp_bus_reset(fwspk->unit);
 729
 730         if (cmp_connection_update(&fwspk->connection) < 0) {
 731                 amdtp_stream_pcm_abort(&fwspk->stream);
 732                 mutex_lock(&fwspk->mutex);
 733                 fwspk_stop_stream(fwspk);
 734                 mutex_unlock(&fwspk->mutex);
 735                 return;
 736         }
 737
 738         amdtp_stream_update(&fwspk->stream);
 739 }
 740
 741 static void fwspk_remove(struct fw_unit *unit)
 742 {
 743         struct fwspk *fwspk = dev_get_drvdata(&unit->device);
 744
 745         amdtp_stream_pcm_abort(&fwspk->stream);
 746         snd_card_disconnect(fwspk->card);
 747
 748         mutex_lock(&fwspk->mutex);
 749         fwspk_stop_stream(fwspk);
 750         mutex_unlock(&fwspk->mutex);
 751
 752         snd_card_free_when_closed(fwspk->card);
 753 }
 754
 755 static const struct device_info griffin_firewave = {
 756         .driver_name = "FireWave",
 757         .short_name  = "FireWave",
 758         .long_name   = "Griffin FireWave Surround",
 759         .pcm_constraints = firewave_constraints,
 760         .mixer_channels = 6,
 761         .mute_fb_id   = 0x01,
 762         .volume_fb_id = 0x02,
 763 };
 764
 765 static const struct device_info lacie_speakers = {
 766         .driver_name = "FWSpeakers",
 767         .short_name  = "FireWire Speakers",
 768         .long_name   = "LaCie FireWire Speakers",
 769         .pcm_constraints = lacie_speakers_constraints,
 770         .mixer_channels = 1,
 771         .mute_fb_id   = 0x01,
 772         .volume_fb_id = 0x01,
 773 };
 774
 775 static const struct ieee1394_device_id fwspk_id_table[] = {
 776         {
 777                 .match_flags  = IEEE1394_MATCH_VENDOR_ID |
 778                                 IEEE1394_MATCH_MODEL_ID |
 779                                 IEEE1394_MATCH_SPECIFIER_ID |
 780                                 IEEE1394_MATCH_VERSION,
 781                 .vendor_id    = VENDOR_GRIFFIN,
 782                 .model_id     = 0x00f970,
 783                 .specifier_id = SPECIFIER_1394TA,
 784                 .version      = VERSION_AVC,
 785                 .driver_data  = (kernel_ulong_t)&griffin_firewave,
 786         },
 787         {
 788                 .match_flags  = IEEE1394_MATCH_VENDOR_ID |
 789                                 IEEE1394_MATCH_MODEL_ID |
 790                                 IEEE1394_MATCH_SPECIFIER_ID |
 791                                 IEEE1394_MATCH_VERSION,
 792                 .vendor_id    = VENDOR_LACIE,
 793                 .model_id     = 0x00f970,
 794                 .specifier_id = SPECIFIER_1394TA,
 795                 .version      = VERSION_AVC,
 796                 .driver_data  = (kernel_ulong_t)&lacie_speakers,
 797         },
 798         { }
 799 };
 800 MODULE_DEVICE_TABLE(ieee1394, fwspk_id_table);
 801
 802 static struct fw_driver fwspk_driver = {
 803         .driver   = {
 804                 .owner  = THIS_MODULE,
 805                 .name   = KBUILD_MODNAME,
 806                 .bus    = &fw_bus_type,
 807         },
 808         .probe    = fwspk_probe,
 809         .update   = fwspk_bus_reset,
 810         .remove   = fwspk_remove,
 811         .id_table = fwspk_id_table,
 812 };
 813
 814 static int __init alsa_fwspk_init(void)
 815 {
 816         return driver_register(&fwspk_driver.driver);
 817 }
 818
 819 static void __exit alsa_fwspk_exit(void)
 820 {
 821         driver_unregister(&fwspk_driver.driver);
 822 }
 823
 824 module_init(alsa_fwspk_init);
 825 module_exit(alsa_fwspk_exit);