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_out_stream stream;
  55         bool stream_running;
  56         bool mute;
  57         s16 volume[6];
  58         s16 volume_min;
  59         s16 volume_max;
  60 };
  61
  62 MODULE_DESCRIPTION("FireWire speakers driver");
  63 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
  64 MODULE_LICENSE("GPL v2");
  65
  66 static int firewave_rate_constraint(struct snd_pcm_hw_params *params,
  67                                     struct snd_pcm_hw_rule *rule)
  68 {
  69         static unsigned int stereo_rates[] = { 48000, 96000 };
  70         struct snd_interval *channels =
  71                         hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
  72         struct snd_interval *rate =
  73                         hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
  74
  75         /* two channels work only at 48/96 kHz */
  76         if (snd_interval_max(channels) < 6)
  77                 return snd_interval_list(rate, 2, stereo_rates, 0);
  78         return 0;
  79 }
  80
  81 static int firewave_channels_constraint(struct snd_pcm_hw_params *params,
  82                                         struct snd_pcm_hw_rule *rule)
  83 {
  84         static const struct snd_interval all_channels = { .min = 6, .max = 6 };
  85         struct snd_interval *rate =
  86                         hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
  87         struct snd_interval *channels =
  88                         hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
  89
  90         /* 32/44.1 kHz work only with all six channels */
  91         if (snd_interval_max(rate) < 48000)
  92                 return snd_interval_refine(channels, &all_channels);
  93         return 0;
  94 }
  95
  96 static int firewave_constraints(struct snd_pcm_runtime *runtime)
  97 {
  98         static unsigned int channels_list[] = { 2, 6 };
  99         static struct snd_pcm_hw_constraint_list channels_list_constraint = {
 100                 .count = 2,
 101                 .list = channels_list,
 102         };
 103         int err;
 104
 105         runtime->hw.rates = SNDRV_PCM_RATE_32000 |
 106                             SNDRV_PCM_RATE_44100 |
 107                             SNDRV_PCM_RATE_48000 |
 108                             SNDRV_PCM_RATE_96000;
 109         runtime->hw.channels_max = 6;
 110
 111         err = snd_pcm_hw_constraint_list(runtime, 0,
 112                                          SNDRV_PCM_HW_PARAM_CHANNELS,
 113                                          &channels_list_constraint);
 114         if (err < 0)
 115                 return err;
 116         err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 117                                   firewave_rate_constraint, NULL,
 118                                   SNDRV_PCM_HW_PARAM_CHANNELS, -1);
 119         if (err < 0)
 120                 return err;
 121         err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
 122                                   firewave_channels_constraint, NULL,
 123                                   SNDRV_PCM_HW_PARAM_RATE, -1);
 124         if (err < 0)
 125                 return err;
 126
 127         return 0;
 128 }
 129
 130 static int lacie_speakers_constraints(struct snd_pcm_runtime *runtime)
 131 {
 132         runtime->hw.rates = SNDRV_PCM_RATE_32000 |
 133                             SNDRV_PCM_RATE_44100 |
 134                             SNDRV_PCM_RATE_48000 |
 135                             SNDRV_PCM_RATE_88200 |
 136                             SNDRV_PCM_RATE_96000;
 137
 138         return 0;
 139 }
 140
 141 static int fwspk_open(struct snd_pcm_substream *substream)
 142 {
 143         static const struct snd_pcm_hardware hardware = {
 144                 .info = SNDRV_PCM_INFO_MMAP |
 145                         SNDRV_PCM_INFO_MMAP_VALID |
 146                         SNDRV_PCM_INFO_BATCH |
 147                         SNDRV_PCM_INFO_INTERLEAVED |
 148                         SNDRV_PCM_INFO_BLOCK_TRANSFER,
 149                 .formats = AMDTP_OUT_PCM_FORMAT_BITS,
 150                 .channels_min = 2,
 151                 .channels_max = 2,
 152                 .buffer_bytes_max = 4 * 1024 * 1024,
 153                 .period_bytes_min = 1,
 154                 .period_bytes_max = UINT_MAX,
 155                 .periods_min = 1,
 156                 .periods_max = UINT_MAX,
 157         };
 158         struct fwspk *fwspk = substream->private_data;
 159         struct snd_pcm_runtime *runtime = substream->runtime;
 160         int err;
 161
 162         runtime->hw = hardware;
 163
 164         err = fwspk->device_info->pcm_constraints(runtime);
 165         if (err < 0)
 166                 return err;
 167         err = snd_pcm_limit_hw_rates(runtime);
 168         if (err < 0)
 169                 return err;
 170
 171         err = snd_pcm_hw_constraint_minmax(runtime,
 172                                            SNDRV_PCM_HW_PARAM_PERIOD_TIME,
 173                                            5000, UINT_MAX);
 174         if (err < 0)
 175                 return err;
 176
 177         err = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
 178         if (err < 0)
 179                 return err;
 180
 181         return 0;
 182 }
 183
 184 static int fwspk_close(struct snd_pcm_substream *substream)
 185 {
 186         return 0;
 187 }
 188
 189 static void fwspk_stop_stream(struct fwspk *fwspk)
 190 {
 191         if (fwspk->stream_running) {
 192                 amdtp_out_stream_stop(&fwspk->stream);
 193                 cmp_connection_break(&fwspk->connection);
 194                 fwspk->stream_running = false;
 195         }
 196 }
 197
 198 static int fwspk_set_rate(struct fwspk *fwspk, unsigned int sfc)
 199 {
 200         u8 *buf;
 201         int err;
 202
 203         buf = kmalloc(8, GFP_KERNEL);
 204         if (!buf)
 205                 return -ENOMEM;
 206
 207         buf[0] = 0x00;          /* AV/C, CONTROL */
 208         buf[1] = 0xff;          /* unit */
 209         buf[2] = 0x19;          /* INPUT PLUG SIGNAL FORMAT */
 210         buf[3] = 0x00;          /* plug 0 */
 211         buf[4] = 0x90;          /* format: audio */
 212         buf[5] = 0x00 | sfc;    /* AM824, frequency */
 213         buf[6] = 0xff;          /* SYT (not used) */
 214         buf[7] = 0xff;
 215
 216         err = fcp_avc_transaction(fwspk->unit, buf, 8, buf, 8,
 217                                   BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5));
 218         if (err < 0)
 219                 goto error;
 220         if (err < 6 || buf[0] != 0x09 /* ACCEPTED */) {
 221                 dev_err(&fwspk->unit->device, "failed to set sample rate\n");
 222                 err = -EIO;
 223                 goto error;
 224         }
 225
 226         err = 0;
 227
 228 error:
 229         kfree(buf);
 230
 231         return err;
 232 }
 233
 234 static int fwspk_hw_params(struct snd_pcm_substream *substream,
 235                            struct snd_pcm_hw_params *hw_params)
 236 {
 237         struct fwspk *fwspk = substream->private_data;
 238         int err;
 239
 240         mutex_lock(&fwspk->mutex);
 241         fwspk_stop_stream(fwspk);
 242         mutex_unlock(&fwspk->mutex);
 243
 244         err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
 245                                                params_buffer_bytes(hw_params));
 246         if (err < 0)
 247                 goto error;
 248
 249         amdtp_out_stream_set_rate(&fwspk->stream, params_rate(hw_params));
 250         amdtp_out_stream_set_pcm(&fwspk->stream, params_channels(hw_params));
 251
 252         amdtp_out_stream_set_pcm_format(&fwspk->stream,
 253                                         params_format(hw_params));
 254
 255         err = fwspk_set_rate(fwspk, fwspk->stream.sfc);
 256         if (err < 0)
 257                 goto err_buffer;
 258
 259         return 0;
 260
 261 err_buffer:
 262         snd_pcm_lib_free_vmalloc_buffer(substream);
 263 error:
 264         return err;
 265 }
 266
 267 static int fwspk_hw_free(struct snd_pcm_substream *substream)
 268 {
 269         struct fwspk *fwspk = substream->private_data;
 270
 271         mutex_lock(&fwspk->mutex);
 272         fwspk_stop_stream(fwspk);
 273         mutex_unlock(&fwspk->mutex);
 274
 275         return snd_pcm_lib_free_vmalloc_buffer(substream);
 276 }
 277
 278 static int fwspk_prepare(struct snd_pcm_substream *substream)
 279 {
 280         struct fwspk *fwspk = substream->private_data;
 281         int err;
 282
 283         mutex_lock(&fwspk->mutex);
 284
 285         if (amdtp_out_streaming_error(&fwspk->stream))
 286                 fwspk_stop_stream(fwspk);
 287
 288         if (!fwspk->stream_running) {
 289                 err = cmp_connection_establish(&fwspk->connection,
 290                         amdtp_out_stream_get_max_payload(&fwspk->stream));
 291                 if (err < 0)
 292                         goto err_mutex;
 293
 294                 err = amdtp_out_stream_start(&fwspk->stream,
 295                                         fwspk->connection.resources.channel,
 296                                         fwspk->connection.speed);
 297                 if (err < 0)
 298                         goto err_connection;
 299
 300                 fwspk->stream_running = true;
 301         }
 302
 303         mutex_unlock(&fwspk->mutex);
 304
 305         amdtp_out_stream_pcm_prepare(&fwspk->stream);
 306
 307         return 0;
 308
 309 err_connection:
 310         cmp_connection_break(&fwspk->connection);
 311 err_mutex:
 312         mutex_unlock(&fwspk->mutex);
 313
 314         return err;
 315 }
 316
 317 static int fwspk_trigger(struct snd_pcm_substream *substream, int cmd)
 318 {
 319         struct fwspk *fwspk = substream->private_data;
 320         struct snd_pcm_substream *pcm;
 321
 322         switch (cmd) {
 323         case SNDRV_PCM_TRIGGER_START:
 324                 pcm = substream;
 325                 break;
 326         case SNDRV_PCM_TRIGGER_STOP:
 327                 pcm = NULL;
 328                 break;
 329         default:
 330                 return -EINVAL;
 331         }
 332         amdtp_out_stream_pcm_trigger(&fwspk->stream, pcm);
 333         return 0;
 334 }
 335
 336 static snd_pcm_uframes_t fwspk_pointer(struct snd_pcm_substream *substream)
 337 {
 338         struct fwspk *fwspk = substream->private_data;
 339
 340         return amdtp_out_stream_pcm_pointer(&fwspk->stream);
 341 }
 342
 343 static int fwspk_create_pcm(struct fwspk *fwspk)
 344 {
 345         static struct snd_pcm_ops ops = {
 346                 .open      = fwspk_open,
 347                 .close     = fwspk_close,
 348                 .ioctl     = snd_pcm_lib_ioctl,
 349                 .hw_params = fwspk_hw_params,
 350                 .hw_free   = fwspk_hw_free,
 351                 .prepare   = fwspk_prepare,
 352                 .trigger   = fwspk_trigger,
 353                 .pointer   = fwspk_pointer,
 354                 .page      = snd_pcm_lib_get_vmalloc_page,
 355                 .mmap      = snd_pcm_lib_mmap_vmalloc,
 356         };
 357         struct snd_pcm *pcm;
 358         int err;
 359
 360         err = snd_pcm_new(fwspk->card, "OXFW970", 0, 1, 0, &pcm);
 361         if (err < 0)
 362                 return err;
 363         pcm->private_data = fwspk;
 364         strcpy(pcm->name, fwspk->device_info->short_name);
 365         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &ops);
 366         return 0;
 367 }
 368
 369 enum control_action { CTL_READ, CTL_WRITE };
 370 enum control_attribute {
 371         CTL_MIN         = 0x02,
 372         CTL_MAX         = 0x03,
 373         CTL_CURRENT     = 0x10,
 374 };
 375
 376 static int fwspk_mute_command(struct fwspk *fwspk, bool *value,
 377                               enum control_action action)
 378 {
 379         u8 *buf;
 380         u8 response_ok;
 381         int err;
 382
 383         buf = kmalloc(11, GFP_KERNEL);
 384         if (!buf)
 385                 return -ENOMEM;
 386
 387         if (action == CTL_READ) {
 388                 buf[0] = 0x01;          /* AV/C, STATUS */
 389                 response_ok = 0x0c;     /*       STABLE */
 390         } else {
 391                 buf[0] = 0x00;          /* AV/C, CONTROL */
 392                 response_ok = 0x09;     /*       ACCEPTED */
 393         }
 394         buf[1] = 0x08;                  /* audio unit 0 */
 395         buf[2] = 0xb8;                  /* FUNCTION BLOCK */
 396         buf[3] = 0x81;                  /* function block type: feature */
 397         buf[4] = fwspk->device_info->mute_fb_id; /* function block ID */
 398         buf[5] = 0x10;                  /* control attribute: current */
 399         buf[6] = 0x02;                  /* selector length */
 400         buf[7] = 0x00;                  /* audio channel number */
 401         buf[8] = 0x01;                  /* control selector: mute */
 402         buf[9] = 0x01;                  /* control data length */
 403         if (action == CTL_READ)
 404                 buf[10] = 0xff;
 405         else
 406                 buf[10] = *value ? 0x70 : 0x60;
 407
 408         err = fcp_avc_transaction(fwspk->unit, buf, 11, buf, 11, 0x3fe);
 409         if (err < 0)
 410                 goto error;
 411         if (err < 11) {
 412                 dev_err(&fwspk->unit->device, "short FCP response\n");
 413                 err = -EIO;
 414                 goto error;
 415         }
 416         if (buf[0] != response_ok) {
 417                 dev_err(&fwspk->unit->device, "mute command failed\n");
 418                 err = -EIO;
 419                 goto error;
 420         }
 421         if (action == CTL_READ)
 422                 *value = buf[10] == 0x70;
 423
 424         err = 0;
 425
 426 error:
 427         kfree(buf);
 428
 429         return err;
 430 }
 431
 432 static int fwspk_volume_command(struct fwspk *fwspk, s16 *value,
 433                                 unsigned int channel,
 434                                 enum control_attribute attribute,
 435                                 enum control_action action)
 436 {
 437         u8 *buf;
 438         u8 response_ok;
 439         int err;
 440
 441         buf = kmalloc(12, GFP_KERNEL);
 442         if (!buf)
 443                 return -ENOMEM;
 444
 445         if (action == CTL_READ) {
 446                 buf[0] = 0x01;          /* AV/C, STATUS */
 447                 response_ok = 0x0c;     /*       STABLE */
 448         } else {
 449                 buf[0] = 0x00;          /* AV/C, CONTROL */
 450                 response_ok = 0x09;     /*       ACCEPTED */
 451         }
 452         buf[1] = 0x08;                  /* audio unit 0 */
 453         buf[2] = 0xb8;                  /* FUNCTION BLOCK */
 454         buf[3] = 0x81;                  /* function block type: feature */
 455         buf[4] = fwspk->device_info->volume_fb_id; /* function block ID */
 456         buf[5] = attribute;             /* control attribute */
 457         buf[6] = 0x02;                  /* selector length */
 458         buf[7] = channel;               /* audio channel number */
 459         buf[8] = 0x02;                  /* control selector: volume */
 460         buf[9] = 0x02;                  /* control data length */
 461         if (action == CTL_READ) {
 462                 buf[10] = 0xff;
 463                 buf[11] = 0xff;
 464         } else {
 465                 buf[10] = *value >> 8;
 466                 buf[11] = *value;
 467         }
 468
 469         err = fcp_avc_transaction(fwspk->unit, buf, 12, buf, 12, 0x3fe);
 470         if (err < 0)
 471                 goto error;
 472         if (err < 12) {
 473                 dev_err(&fwspk->unit->device, "short FCP response\n");
 474                 err = -EIO;
 475                 goto error;
 476         }
 477         if (buf[0] != response_ok) {
 478                 dev_err(&fwspk->unit->device, "volume command failed\n");
 479                 err = -EIO;
 480                 goto error;
 481         }
 482         if (action == CTL_READ)
 483                 *value = (buf[10] << 8) | buf[11];
 484
 485         err = 0;
 486
 487 error:
 488         kfree(buf);
 489
 490         return err;
 491 }
 492
 493 static int fwspk_mute_get(struct snd_kcontrol *control,
 494                           struct snd_ctl_elem_value *value)
 495 {
 496         struct fwspk *fwspk = control->private_data;
 497
 498         value->value.integer.value[0] = !fwspk->mute;
 499
 500         return 0;
 501 }
 502
 503 static int fwspk_mute_put(struct snd_kcontrol *control,
 504                           struct snd_ctl_elem_value *value)
 505 {
 506         struct fwspk *fwspk = control->private_data;
 507         bool mute;
 508         int err;
 509
 510         mute = !value->value.integer.value[0];
 511
 512         if (mute == fwspk->mute)
 513                 return 0;
 514
 515         err = fwspk_mute_command(fwspk, &mute, CTL_WRITE);
 516         if (err < 0)
 517                 return err;
 518         fwspk->mute = mute;
 519
 520         return 1;
 521 }
 522
 523 static int fwspk_volume_info(struct snd_kcontrol *control,
 524                              struct snd_ctl_elem_info *info)
 525 {
 526         struct fwspk *fwspk = control->private_data;
 527
 528         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 529         info->count = fwspk->device_info->mixer_channels;
 530         info->value.integer.min = fwspk->volume_min;
 531         info->value.integer.max = fwspk->volume_max;
 532
 533         return 0;
 534 }
 535
 536 static const u8 channel_map[6] = { 0, 1, 4, 5, 2, 3 };
 537
 538 static int fwspk_volume_get(struct snd_kcontrol *control,
 539                             struct snd_ctl_elem_value *value)
 540 {
 541         struct fwspk *fwspk = control->private_data;
 542         unsigned int i;
 543
 544         for (i = 0; i < fwspk->device_info->mixer_channels; ++i)
 545                 value->value.integer.value[channel_map[i]] = fwspk->volume[i];
 546
 547         return 0;
 548 }
 549
 550 static int fwspk_volume_put(struct snd_kcontrol *control,
 551                           struct snd_ctl_elem_value *value)
 552 {
 553         struct fwspk *fwspk = control->private_data;
 554         unsigned int i, changed_channels;
 555         bool equal_values = true;
 556         s16 volume;
 557         int err;
 558
 559         for (i = 0; i < fwspk->device_info->mixer_channels; ++i) {
 560                 if (value->value.integer.value[i] < fwspk->volume_min ||
 561                     value->value.integer.value[i] > fwspk->volume_max)
 562                         return -EINVAL;
 563                 if (value->value.integer.value[i] !=
 564                     value->value.integer.value[0])
 565                         equal_values = false;
 566         }
 567
 568         changed_channels = 0;
 569         for (i = 0; i < fwspk->device_info->mixer_channels; ++i)
 570                 if (value->value.integer.value[channel_map[i]] !=
 571                                                         fwspk->volume[i])
 572                         changed_channels |= 1 << (i + 1);
 573
 574         if (equal_values && changed_channels != 0)
 575                 changed_channels = 1 << 0;
 576
 577         for (i = 0; i <= fwspk->device_info->mixer_channels; ++i) {
 578                 volume = value->value.integer.value[channel_map[i ? i - 1 : 0]];
 579                 if (changed_channels & (1 << i)) {
 580                         err = fwspk_volume_command(fwspk, &volume, i,
 581                                                    CTL_CURRENT, CTL_WRITE);
 582                         if (err < 0)
 583                                 return err;
 584                 }
 585                 if (i > 0)
 586                         fwspk->volume[i - 1] = volume;
 587         }
 588
 589         return changed_channels != 0;
 590 }
 591
 592 static int fwspk_create_mixer(struct fwspk *fwspk)
 593 {
 594         static const struct snd_kcontrol_new controls[] = {
 595                 {
 596                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 597                         .name = "PCM Playback Switch",
 598                         .info = snd_ctl_boolean_mono_info,
 599                         .get = fwspk_mute_get,
 600                         .put = fwspk_mute_put,
 601                 },
 602                 {
 603                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 604                         .name = "PCM Playback Volume",
 605                         .info = fwspk_volume_info,
 606                         .get = fwspk_volume_get,
 607                         .put = fwspk_volume_put,
 608                 },
 609         };
 610         unsigned int i, first_ch;
 611         int err;
 612
 613         err = fwspk_volume_command(fwspk, &fwspk->volume_min,
 614                                    0, CTL_MIN, CTL_READ);
 615         if (err < 0)
 616                 return err;
 617         err = fwspk_volume_command(fwspk, &fwspk->volume_max,
 618                                    0, CTL_MAX, CTL_READ);
 619         if (err < 0)
 620                 return err;
 621
 622         err = fwspk_mute_command(fwspk, &fwspk->mute, CTL_READ);
 623         if (err < 0)
 624                 return err;
 625
 626         first_ch = fwspk->device_info->mixer_channels == 1 ? 0 : 1;
 627         for (i = 0; i < fwspk->device_info->mixer_channels; ++i) {
 628                 err = fwspk_volume_command(fwspk, &fwspk->volume[i],
 629                                            first_ch + i, CTL_CURRENT, CTL_READ);
 630                 if (err < 0)
 631                         return err;
 632         }
 633
 634         for (i = 0; i < ARRAY_SIZE(controls); ++i) {
 635                 err = snd_ctl_add(fwspk->card,
 636                                   snd_ctl_new1(&controls[i], fwspk));
 637                 if (err < 0)
 638                         return err;
 639         }
 640
 641         return 0;
 642 }
 643
 644 static u32 fwspk_read_firmware_version(struct fw_unit *unit)
 645 {
 646         __be32 data;
 647         int err;
 648
 649         err = snd_fw_transaction(unit, TCODE_READ_QUADLET_REQUEST,
 650                                  OXFORD_FIRMWARE_ID_ADDRESS, &data, 4);
 651         return err >= 0 ? be32_to_cpu(data) : 0;
 652 }
 653
 654 static void fwspk_card_free(struct snd_card *card)
 655 {
 656         struct fwspk *fwspk = card->private_data;
 657
 658         amdtp_out_stream_destroy(&fwspk->stream);
 659         cmp_connection_destroy(&fwspk->connection);
 660         fw_unit_put(fwspk->unit);
 661         mutex_destroy(&fwspk->mutex);
 662 }
 663
 664 static int fwspk_probe(struct fw_unit *unit,
 665                        const struct ieee1394_device_id *id)
 666 {
 667         struct fw_device *fw_dev = fw_parent_device(unit);
 668         struct snd_card *card;
 669         struct fwspk *fwspk;
 670         u32 firmware;
 671         int err;
 672
 673         err = snd_card_create(-1, NULL, THIS_MODULE, sizeof(*fwspk), &card);
 674         if (err < 0)
 675                 return err;
 676         snd_card_set_dev(card, &unit->device);
 677
 678         fwspk = card->private_data;
 679         fwspk->card = card;
 680         mutex_init(&fwspk->mutex);
 681         fwspk->unit = fw_unit_get(unit);
 682         fwspk->device_info = (const struct device_info *)id->driver_data;
 683
 684         err = cmp_connection_init(&fwspk->connection, unit, 0);
 685         if (err < 0)
 686                 goto err_unit;
 687
 688         err = amdtp_out_stream_init(&fwspk->stream, unit, CIP_NONBLOCKING);
 689         if (err < 0)
 690                 goto err_connection;
 691
 692         card->private_free = fwspk_card_free;
 693
 694         strcpy(card->driver, fwspk->device_info->driver_name);
 695         strcpy(card->shortname, fwspk->device_info->short_name);
 696         firmware = fwspk_read_firmware_version(unit);
 697         snprintf(card->longname, sizeof(card->longname),
 698                  "%s (OXFW%x %04x), GUID %08x%08x at %s, S%d",
 699                  fwspk->device_info->long_name,
 700                  firmware >> 20, firmware & 0xffff,
 701                  fw_dev->config_rom[3], fw_dev->config_rom[4],
 702                  dev_name(&unit->device), 100 << fw_dev->max_speed);
 703         strcpy(card->mixername, "OXFW970");
 704
 705         err = fwspk_create_pcm(fwspk);
 706         if (err < 0)
 707                 goto error;
 708
 709         err = fwspk_create_mixer(fwspk);
 710         if (err < 0)
 711                 goto error;
 712
 713         err = snd_card_register(card);
 714         if (err < 0)
 715                 goto error;
 716
 717         dev_set_drvdata(&unit->device, fwspk);
 718
 719         return 0;
 720
 721 err_connection:
 722         cmp_connection_destroy(&fwspk->connection);
 723 err_unit:
 724         fw_unit_put(fwspk->unit);
 725         mutex_destroy(&fwspk->mutex);
 726 error:
 727         snd_card_free(card);
 728         return err;
 729 }
 730
 731 static void fwspk_bus_reset(struct fw_unit *unit)
 732 {
 733         struct fwspk *fwspk = dev_get_drvdata(&unit->device);
 734
 735         fcp_bus_reset(fwspk->unit);
 736
 737         if (cmp_connection_update(&fwspk->connection) < 0) {
 738                 amdtp_out_stream_pcm_abort(&fwspk->stream);
 739                 mutex_lock(&fwspk->mutex);
 740                 fwspk_stop_stream(fwspk);
 741                 mutex_unlock(&fwspk->mutex);
 742                 return;
 743         }
 744
 745         amdtp_out_stream_update(&fwspk->stream);
 746 }
 747
 748 static void fwspk_remove(struct fw_unit *unit)
 749 {
 750         struct fwspk *fwspk = dev_get_drvdata(&unit->device);
 751
 752         amdtp_out_stream_pcm_abort(&fwspk->stream);
 753         snd_card_disconnect(fwspk->card);
 754
 755         mutex_lock(&fwspk->mutex);
 756         fwspk_stop_stream(fwspk);
 757         mutex_unlock(&fwspk->mutex);
 758
 759         snd_card_free_when_closed(fwspk->card);
 760 }
 761
 762 static const struct device_info griffin_firewave = {
 763         .driver_name = "FireWave",
 764         .short_name  = "FireWave",
 765         .long_name   = "Griffin FireWave Surround",
 766         .pcm_constraints = firewave_constraints,
 767         .mixer_channels = 6,
 768         .mute_fb_id   = 0x01,
 769         .volume_fb_id = 0x02,
 770 };
 771
 772 static const struct device_info lacie_speakers = {
 773         .driver_name = "FWSpeakers",
 774         .short_name  = "FireWire Speakers",
 775         .long_name   = "LaCie FireWire Speakers",
 776         .pcm_constraints = lacie_speakers_constraints,
 777         .mixer_channels = 1,
 778         .mute_fb_id   = 0x01,
 779         .volume_fb_id = 0x01,
 780 };
 781
 782 static const struct ieee1394_device_id fwspk_id_table[] = {
 783         {
 784                 .match_flags  = IEEE1394_MATCH_VENDOR_ID |
 785                                 IEEE1394_MATCH_MODEL_ID |
 786                                 IEEE1394_MATCH_SPECIFIER_ID |
 787                                 IEEE1394_MATCH_VERSION,
 788                 .vendor_id    = VENDOR_GRIFFIN,
 789                 .model_id     = 0x00f970,
 790                 .specifier_id = SPECIFIER_1394TA,
 791                 .version      = VERSION_AVC,
 792                 .driver_data  = (kernel_ulong_t)&griffin_firewave,
 793         },
 794         {
 795                 .match_flags  = IEEE1394_MATCH_VENDOR_ID |
 796                                 IEEE1394_MATCH_MODEL_ID |
 797                                 IEEE1394_MATCH_SPECIFIER_ID |
 798                                 IEEE1394_MATCH_VERSION,
 799                 .vendor_id    = VENDOR_LACIE,
 800                 .model_id     = 0x00f970,
 801                 .specifier_id = SPECIFIER_1394TA,
 802                 .version      = VERSION_AVC,
 803                 .driver_data  = (kernel_ulong_t)&lacie_speakers,
 804         },
 805         { }
 806 };
 807 MODULE_DEVICE_TABLE(ieee1394, fwspk_id_table);
 808
 809 static struct fw_driver fwspk_driver = {
 810         .driver   = {
 811                 .owner  = THIS_MODULE,
 812                 .name   = KBUILD_MODNAME,
 813                 .bus    = &fw_bus_type,
 814         },
 815         .probe    = fwspk_probe,
 816         .update   = fwspk_bus_reset,
 817         .remove   = fwspk_remove,
 818         .id_table = fwspk_id_table,
 819 };
 820
 821 static int __init alsa_fwspk_init(void)
 822 {
 823         return driver_register(&fwspk_driver.driver);
 824 }
 825
 826 static void __exit alsa_fwspk_exit(void)
 827 {
 828         driver_unregister(&fwspk_driver.driver);
 829 }
 830
 831 module_init(alsa_fwspk_init);
 832 module_exit(alsa_fwspk_exit);