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 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 = snd_pcm_hw_constraint_minmax(runtime,
 171                                            SNDRV_PCM_HW_PARAM_PERIOD_TIME,
 172                                            5000, UINT_MAX);
 173         if (err < 0)
 174                 return err;
 175
 176         err = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
 177         if (err < 0)
 178                 return err;
 179
 180         return 0;
 181 }
 182
 183 static int fwspk_close(struct snd_pcm_substream *substream)
 184 {
 185         return 0;
 186 }
 187
 188 static void fwspk_stop_stream(struct fwspk *fwspk)
 189 {
 190         if (amdtp_out_stream_running(&fwspk->stream)) {
 191                 amdtp_out_stream_stop(&fwspk->stream);
 192                 cmp_connection_break(&fwspk->connection);
 193         }
 194 }
 195
 196 static int fwspk_set_rate(struct fwspk *fwspk, unsigned int sfc)
 197 {
 198         u8 *buf;
 199         int err;
 200
 201         buf = kmalloc(8, GFP_KERNEL);
 202         if (!buf)
 203                 return -ENOMEM;
 204
 205         buf[0] = 0x00;          /* AV/C, CONTROL */
 206         buf[1] = 0xff;          /* unit */
 207         buf[2] = 0x19;          /* INPUT PLUG SIGNAL FORMAT */
 208         buf[3] = 0x00;          /* plug 0 */
 209         buf[4] = 0x90;          /* format: audio */
 210         buf[5] = 0x00 | sfc;    /* AM824, frequency */
 211         buf[6] = 0xff;          /* SYT (not used) */
 212         buf[7] = 0xff;
 213
 214         err = fcp_avc_transaction(fwspk->unit, buf, 8, buf, 8,
 215                                   BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5));
 216         if (err < 0)
 217                 goto error;
 218         if (err < 6 || buf[0] != 0x09 /* ACCEPTED */) {
 219                 dev_err(&fwspk->unit->device, "failed to set sample rate\n");
 220                 err = -EIO;
 221                 goto error;
 222         }
 223
 224         err = 0;
 225
 226 error:
 227         kfree(buf);
 228
 229         return err;
 230 }
 231
 232 static int fwspk_hw_params(struct snd_pcm_substream *substream,
 233                            struct snd_pcm_hw_params *hw_params)
 234 {
 235         struct fwspk *fwspk = substream->private_data;
 236         int err;
 237
 238         mutex_lock(&fwspk->mutex);
 239         fwspk_stop_stream(fwspk);
 240         mutex_unlock(&fwspk->mutex);
 241
 242         err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
 243                                                params_buffer_bytes(hw_params));
 244         if (err < 0)
 245                 goto error;
 246
 247         amdtp_out_stream_set_parameters(&fwspk->stream,
 248                                         params_rate(hw_params),
 249                                         params_channels(hw_params),
 250                                         0);
 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 (!amdtp_out_stream_running(&fwspk->stream)) {
 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
 301         mutex_unlock(&fwspk->mutex);
 302
 303         amdtp_out_stream_pcm_prepare(&fwspk->stream);
 304
 305         return 0;
 306
 307 err_connection:
 308         cmp_connection_break(&fwspk->connection);
 309 err_mutex:
 310         mutex_unlock(&fwspk->mutex);
 311
 312         return err;
 313 }
 314
 315 static int fwspk_trigger(struct snd_pcm_substream *substream, int cmd)
 316 {
 317         struct fwspk *fwspk = substream->private_data;
 318         struct snd_pcm_substream *pcm;
 319
 320         switch (cmd) {
 321         case SNDRV_PCM_TRIGGER_START:
 322                 pcm = substream;
 323                 break;
 324         case SNDRV_PCM_TRIGGER_STOP:
 325                 pcm = NULL;
 326                 break;
 327         default:
 328                 return -EINVAL;
 329         }
 330         amdtp_out_stream_pcm_trigger(&fwspk->stream, pcm);
 331         return 0;
 332 }
 333
 334 static snd_pcm_uframes_t fwspk_pointer(struct snd_pcm_substream *substream)
 335 {
 336         struct fwspk *fwspk = substream->private_data;
 337
 338         return amdtp_out_stream_pcm_pointer(&fwspk->stream);
 339 }
 340
 341 static int fwspk_create_pcm(struct fwspk *fwspk)
 342 {
 343         static struct snd_pcm_ops ops = {
 344                 .open      = fwspk_open,
 345                 .close     = fwspk_close,
 346                 .ioctl     = snd_pcm_lib_ioctl,
 347                 .hw_params = fwspk_hw_params,
 348                 .hw_free   = fwspk_hw_free,
 349                 .prepare   = fwspk_prepare,
 350                 .trigger   = fwspk_trigger,
 351                 .pointer   = fwspk_pointer,
 352                 .page      = snd_pcm_lib_get_vmalloc_page,
 353                 .mmap      = snd_pcm_lib_mmap_vmalloc,
 354         };
 355         struct snd_pcm *pcm;
 356         int err;
 357
 358         err = snd_pcm_new(fwspk->card, "OXFW970", 0, 1, 0, &pcm);
 359         if (err < 0)
 360                 return err;
 361         pcm->private_data = fwspk;
 362         strcpy(pcm->name, fwspk->device_info->short_name);
 363         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &ops);
 364         return 0;
 365 }
 366
 367 enum control_action { CTL_READ, CTL_WRITE };
 368 enum control_attribute {
 369         CTL_MIN         = 0x02,
 370         CTL_MAX         = 0x03,
 371         CTL_CURRENT     = 0x10,
 372 };
 373
 374 static int fwspk_mute_command(struct fwspk *fwspk, bool *value,
 375                               enum control_action action)
 376 {
 377         u8 *buf;
 378         u8 response_ok;
 379         int err;
 380
 381         buf = kmalloc(11, GFP_KERNEL);
 382         if (!buf)
 383                 return -ENOMEM;
 384
 385         if (action == CTL_READ) {
 386                 buf[0] = 0x01;          /* AV/C, STATUS */
 387                 response_ok = 0x0c;     /*       STABLE */
 388         } else {
 389                 buf[0] = 0x00;          /* AV/C, CONTROL */
 390                 response_ok = 0x09;     /*       ACCEPTED */
 391         }
 392         buf[1] = 0x08;                  /* audio unit 0 */
 393         buf[2] = 0xb8;                  /* FUNCTION BLOCK */
 394         buf[3] = 0x81;                  /* function block type: feature */
 395         buf[4] = fwspk->device_info->mute_fb_id; /* function block ID */
 396         buf[5] = 0x10;                  /* control attribute: current */
 397         buf[6] = 0x02;                  /* selector length */
 398         buf[7] = 0x00;                  /* audio channel number */
 399         buf[8] = 0x01;                  /* control selector: mute */
 400         buf[9] = 0x01;                  /* control data length */
 401         if (action == CTL_READ)
 402                 buf[10] = 0xff;
 403         else
 404                 buf[10] = *value ? 0x70 : 0x60;
 405
 406         err = fcp_avc_transaction(fwspk->unit, buf, 11, buf, 11, 0x3fe);
 407         if (err < 0)
 408                 goto error;
 409         if (err < 11) {
 410                 dev_err(&fwspk->unit->device, "short FCP response\n");
 411                 err = -EIO;
 412                 goto error;
 413         }
 414         if (buf[0] != response_ok) {
 415                 dev_err(&fwspk->unit->device, "mute command failed\n");
 416                 err = -EIO;
 417                 goto error;
 418         }
 419         if (action == CTL_READ)
 420                 *value = buf[10] == 0x70;
 421
 422         err = 0;
 423
 424 error:
 425         kfree(buf);
 426
 427         return err;
 428 }
 429
 430 static int fwspk_volume_command(struct fwspk *fwspk, s16 *value,
 431                                 unsigned int channel,
 432                                 enum control_attribute attribute,
 433                                 enum control_action action)
 434 {
 435         u8 *buf;
 436         u8 response_ok;
 437         int err;
 438
 439         buf = kmalloc(12, GFP_KERNEL);
 440         if (!buf)
 441                 return -ENOMEM;
 442
 443         if (action == CTL_READ) {
 444                 buf[0] = 0x01;          /* AV/C, STATUS */
 445                 response_ok = 0x0c;     /*       STABLE */
 446         } else {
 447                 buf[0] = 0x00;          /* AV/C, CONTROL */
 448                 response_ok = 0x09;     /*       ACCEPTED */
 449         }
 450         buf[1] = 0x08;                  /* audio unit 0 */
 451         buf[2] = 0xb8;                  /* FUNCTION BLOCK */
 452         buf[3] = 0x81;                  /* function block type: feature */
 453         buf[4] = fwspk->device_info->volume_fb_id; /* function block ID */
 454         buf[5] = attribute;             /* control attribute */
 455         buf[6] = 0x02;                  /* selector length */
 456         buf[7] = channel;               /* audio channel number */
 457         buf[8] = 0x02;                  /* control selector: volume */
 458         buf[9] = 0x02;                  /* control data length */
 459         if (action == CTL_READ) {
 460                 buf[10] = 0xff;
 461                 buf[11] = 0xff;
 462         } else {
 463                 buf[10] = *value >> 8;
 464                 buf[11] = *value;
 465         }
 466
 467         err = fcp_avc_transaction(fwspk->unit, buf, 12, buf, 12, 0x3fe);
 468         if (err < 0)
 469                 goto error;
 470         if (err < 12) {
 471                 dev_err(&fwspk->unit->device, "short FCP response\n");
 472                 err = -EIO;
 473                 goto error;
 474         }
 475         if (buf[0] != response_ok) {
 476                 dev_err(&fwspk->unit->device, "volume command failed\n");
 477                 err = -EIO;
 478                 goto error;
 479         }
 480         if (action == CTL_READ)
 481                 *value = (buf[10] << 8) | buf[11];
 482
 483         err = 0;
 484
 485 error:
 486         kfree(buf);
 487
 488         return err;
 489 }
 490
 491 static int fwspk_mute_get(struct snd_kcontrol *control,
 492                           struct snd_ctl_elem_value *value)
 493 {
 494         struct fwspk *fwspk = control->private_data;
 495
 496         value->value.integer.value[0] = !fwspk->mute;
 497
 498         return 0;
 499 }
 500
 501 static int fwspk_mute_put(struct snd_kcontrol *control,
 502                           struct snd_ctl_elem_value *value)
 503 {
 504         struct fwspk *fwspk = control->private_data;
 505         bool mute;
 506         int err;
 507
 508         mute = !value->value.integer.value[0];
 509
 510         if (mute == fwspk->mute)
 511                 return 0;
 512
 513         err = fwspk_mute_command(fwspk, &mute, CTL_WRITE);
 514         if (err < 0)
 515                 return err;
 516         fwspk->mute = mute;
 517
 518         return 1;
 519 }
 520
 521 static int fwspk_volume_info(struct snd_kcontrol *control,
 522                              struct snd_ctl_elem_info *info)
 523 {
 524         struct fwspk *fwspk = control->private_data;
 525
 526         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 527         info->count = fwspk->device_info->mixer_channels;
 528         info->value.integer.min = fwspk->volume_min;
 529         info->value.integer.max = fwspk->volume_max;
 530
 531         return 0;
 532 }
 533
 534 static const u8 channel_map[6] = { 0, 1, 4, 5, 2, 3 };
 535
 536 static int fwspk_volume_get(struct snd_kcontrol *control,
 537                             struct snd_ctl_elem_value *value)
 538 {
 539         struct fwspk *fwspk = control->private_data;
 540         unsigned int i;
 541
 542         for (i = 0; i < fwspk->device_info->mixer_channels; ++i)
 543                 value->value.integer.value[channel_map[i]] = fwspk->volume[i];
 544
 545         return 0;
 546 }
 547
 548 static int fwspk_volume_put(struct snd_kcontrol *control,
 549                           struct snd_ctl_elem_value *value)
 550 {
 551         struct fwspk *fwspk = control->private_data;
 552         unsigned int i, changed_channels;
 553         bool equal_values = true;
 554         s16 volume;
 555         int err;
 556
 557         for (i = 0; i < fwspk->device_info->mixer_channels; ++i) {
 558                 if (value->value.integer.value[i] < fwspk->volume_min ||
 559                     value->value.integer.value[i] > fwspk->volume_max)
 560                         return -EINVAL;
 561                 if (value->value.integer.value[i] !=
 562                     value->value.integer.value[0])
 563                         equal_values = false;
 564         }
 565
 566         changed_channels = 0;
 567         for (i = 0; i < fwspk->device_info->mixer_channels; ++i)
 568                 if (value->value.integer.value[channel_map[i]] !=
 569                                                         fwspk->volume[i])
 570                         changed_channels |= 1 << (i + 1);
 571
 572         if (equal_values && changed_channels != 0)
 573                 changed_channels = 1 << 0;
 574
 575         for (i = 0; i <= fwspk->device_info->mixer_channels; ++i) {
 576                 volume = value->value.integer.value[channel_map[i ? i - 1 : 0]];
 577                 if (changed_channels & (1 << i)) {
 578                         err = fwspk_volume_command(fwspk, &volume, i,
 579                                                    CTL_CURRENT, CTL_WRITE);
 580                         if (err < 0)
 581                                 return err;
 582                 }
 583                 if (i > 0)
 584                         fwspk->volume[i - 1] = volume;
 585         }
 586
 587         return changed_channels != 0;
 588 }
 589
 590 static int fwspk_create_mixer(struct fwspk *fwspk)
 591 {
 592         static const struct snd_kcontrol_new controls[] = {
 593                 {
 594                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 595                         .name = "PCM Playback Switch",
 596                         .info = snd_ctl_boolean_mono_info,
 597                         .get = fwspk_mute_get,
 598                         .put = fwspk_mute_put,
 599                 },
 600                 {
 601                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 602                         .name = "PCM Playback Volume",
 603                         .info = fwspk_volume_info,
 604                         .get = fwspk_volume_get,
 605                         .put = fwspk_volume_put,
 606                 },
 607         };
 608         unsigned int i, first_ch;
 609         int err;
 610
 611         err = fwspk_volume_command(fwspk, &fwspk->volume_min,
 612                                    0, CTL_MIN, CTL_READ);
 613         if (err < 0)
 614                 return err;
 615         err = fwspk_volume_command(fwspk, &fwspk->volume_max,
 616                                    0, CTL_MAX, CTL_READ);
 617         if (err < 0)
 618                 return err;
 619
 620         err = fwspk_mute_command(fwspk, &fwspk->mute, CTL_READ);
 621         if (err < 0)
 622                 return err;
 623
 624         first_ch = fwspk->device_info->mixer_channels == 1 ? 0 : 1;
 625         for (i = 0; i < fwspk->device_info->mixer_channels; ++i) {
 626                 err = fwspk_volume_command(fwspk, &fwspk->volume[i],
 627                                            first_ch + i, CTL_CURRENT, CTL_READ);
 628                 if (err < 0)
 629                         return err;
 630         }
 631
 632         for (i = 0; i < ARRAY_SIZE(controls); ++i) {
 633                 err = snd_ctl_add(fwspk->card,
 634                                   snd_ctl_new1(&controls[i], fwspk));
 635                 if (err < 0)
 636                         return err;
 637         }
 638
 639         return 0;
 640 }
 641
 642 static u32 fwspk_read_firmware_version(struct fw_unit *unit)
 643 {
 644         __be32 data;
 645         int err;
 646
 647         err = snd_fw_transaction(unit, TCODE_READ_QUADLET_REQUEST,
 648                                  OXFORD_FIRMWARE_ID_ADDRESS, &data, 4, 0);
 649         return err >= 0 ? be32_to_cpu(data) : 0;
 650 }
 651
 652 static void fwspk_card_free(struct snd_card *card)
 653 {
 654         struct fwspk *fwspk = card->private_data;
 655
 656         amdtp_out_stream_destroy(&fwspk->stream);
 657         cmp_connection_destroy(&fwspk->connection);
 658         fw_unit_put(fwspk->unit);
 659         mutex_destroy(&fwspk->mutex);
 660 }
 661
 662 static int fwspk_probe(struct fw_unit *unit,
 663                        const struct ieee1394_device_id *id)
 664 {
 665         struct fw_device *fw_dev = fw_parent_device(unit);
 666         struct snd_card *card;
 667         struct fwspk *fwspk;
 668         u32 firmware;
 669         int err;
 670
 671         err = snd_card_create(-1, NULL, THIS_MODULE, sizeof(*fwspk), &card);
 672         if (err < 0)
 673                 return err;
 674         snd_card_set_dev(card, &unit->device);
 675
 676         fwspk = card->private_data;
 677         fwspk->card = card;
 678         mutex_init(&fwspk->mutex);
 679         fwspk->unit = fw_unit_get(unit);
 680         fwspk->device_info = (const struct device_info *)id->driver_data;
 681
 682         err = cmp_connection_init(&fwspk->connection, unit, 0);
 683         if (err < 0)
 684                 goto err_unit;
 685
 686         err = amdtp_out_stream_init(&fwspk->stream, unit, CIP_NONBLOCKING);
 687         if (err < 0)
 688                 goto err_connection;
 689
 690         card->private_free = fwspk_card_free;
 691
 692         strcpy(card->driver, fwspk->device_info->driver_name);
 693         strcpy(card->shortname, fwspk->device_info->short_name);
 694         firmware = fwspk_read_firmware_version(unit);
 695         snprintf(card->longname, sizeof(card->longname),
 696                  "%s (OXFW%x %04x), GUID %08x%08x at %s, S%d",
 697                  fwspk->device_info->long_name,
 698                  firmware >> 20, firmware & 0xffff,
 699                  fw_dev->config_rom[3], fw_dev->config_rom[4],
 700                  dev_name(&unit->device), 100 << fw_dev->max_speed);
 701         strcpy(card->mixername, "OXFW970");
 702
 703         err = fwspk_create_pcm(fwspk);
 704         if (err < 0)
 705                 goto error;
 706
 707         err = fwspk_create_mixer(fwspk);
 708         if (err < 0)
 709                 goto error;
 710
 711         err = snd_card_register(card);
 712         if (err < 0)
 713                 goto error;
 714
 715         dev_set_drvdata(&unit->device, fwspk);
 716
 717         return 0;
 718
 719 err_connection:
 720         cmp_connection_destroy(&fwspk->connection);
 721 err_unit:
 722         fw_unit_put(fwspk->unit);
 723         mutex_destroy(&fwspk->mutex);
 724 error:
 725         snd_card_free(card);
 726         return err;
 727 }
 728
 729 static void fwspk_bus_reset(struct fw_unit *unit)
 730 {
 731         struct fwspk *fwspk = dev_get_drvdata(&unit->device);
 732
 733         fcp_bus_reset(fwspk->unit);
 734
 735         if (cmp_connection_update(&fwspk->connection) < 0) {
 736                 amdtp_out_stream_pcm_abort(&fwspk->stream);
 737                 mutex_lock(&fwspk->mutex);
 738                 fwspk_stop_stream(fwspk);
 739                 mutex_unlock(&fwspk->mutex);
 740                 return;
 741         }
 742
 743         amdtp_out_stream_update(&fwspk->stream);
 744 }
 745
 746 static void fwspk_remove(struct fw_unit *unit)
 747 {
 748         struct fwspk *fwspk = dev_get_drvdata(&unit->device);
 749
 750         amdtp_out_stream_pcm_abort(&fwspk->stream);
 751         snd_card_disconnect(fwspk->card);
 752
 753         mutex_lock(&fwspk->mutex);
 754         fwspk_stop_stream(fwspk);
 755         mutex_unlock(&fwspk->mutex);
 756
 757         snd_card_free_when_closed(fwspk->card);
 758 }
 759
 760 static const struct device_info griffin_firewave = {
 761         .driver_name = "FireWave",
 762         .short_name  = "FireWave",
 763         .long_name   = "Griffin FireWave Surround",
 764         .pcm_constraints = firewave_constraints,
 765         .mixer_channels = 6,
 766         .mute_fb_id   = 0x01,
 767         .volume_fb_id = 0x02,
 768 };
 769
 770 static const struct device_info lacie_speakers = {
 771         .driver_name = "FWSpeakers",
 772         .short_name  = "FireWire Speakers",
 773         .long_name   = "LaCie FireWire Speakers",
 774         .pcm_constraints = lacie_speakers_constraints,
 775         .mixer_channels = 1,
 776         .mute_fb_id   = 0x01,
 777         .volume_fb_id = 0x01,
 778 };
 779
 780 static const struct ieee1394_device_id fwspk_id_table[] = {
 781         {
 782                 .match_flags  = IEEE1394_MATCH_VENDOR_ID |
 783                                 IEEE1394_MATCH_MODEL_ID |
 784                                 IEEE1394_MATCH_SPECIFIER_ID |
 785                                 IEEE1394_MATCH_VERSION,
 786                 .vendor_id    = VENDOR_GRIFFIN,
 787                 .model_id     = 0x00f970,
 788                 .specifier_id = SPECIFIER_1394TA,
 789                 .version      = VERSION_AVC,
 790                 .driver_data  = (kernel_ulong_t)&griffin_firewave,
 791         },
 792         {
 793                 .match_flags  = IEEE1394_MATCH_VENDOR_ID |
 794                                 IEEE1394_MATCH_MODEL_ID |
 795                                 IEEE1394_MATCH_SPECIFIER_ID |
 796                                 IEEE1394_MATCH_VERSION,
 797                 .vendor_id    = VENDOR_LACIE,
 798                 .model_id     = 0x00f970,
 799                 .specifier_id = SPECIFIER_1394TA,
 800                 .version      = VERSION_AVC,
 801                 .driver_data  = (kernel_ulong_t)&lacie_speakers,
 802         },
 803         { }
 804 };
 805 MODULE_DEVICE_TABLE(ieee1394, fwspk_id_table);
 806
 807 static struct fw_driver fwspk_driver = {
 808         .driver   = {
 809                 .owner  = THIS_MODULE,
 810                 .name   = KBUILD_MODNAME,
 811                 .bus    = &fw_bus_type,
 812         },
 813         .probe    = fwspk_probe,
 814         .update   = fwspk_bus_reset,
 815         .remove   = fwspk_remove,
 816         .id_table = fwspk_id_table,
 817 };
 818
 819 static int __init alsa_fwspk_init(void)
 820 {
 821         return driver_register(&fwspk_driver.driver);
 822 }
 823
 824 static void __exit alsa_fwspk_exit(void)
 825 {
 826         driver_unregister(&fwspk_driver.driver);
 827 }
 828
 829 module_init(alsa_fwspk_init);
 830 module_exit(alsa_fwspk_exit);