Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/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_hw_params(struct snd_pcm_substream *substream,
191                            struct snd_pcm_hw_params *hw_params)
192 {
193         struct fwspk *fwspk = substream->private_data;
194         int err;
195 
196         mutex_lock(&fwspk->mutex);
197         fwspk_stop_stream(fwspk);
198         mutex_unlock(&fwspk->mutex);
199 
200         err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
201                                                params_buffer_bytes(hw_params));
202         if (err < 0)
203                 goto error;
204 
205         amdtp_stream_set_parameters(&fwspk->stream,
206                                     params_rate(hw_params),
207                                     params_channels(hw_params),
208                                     0);
209 
210         amdtp_stream_set_pcm_format(&fwspk->stream,
211                                     params_format(hw_params));
212 
213         err = avc_general_set_sig_fmt(fwspk->unit, params_rate(hw_params),
214                                       AVC_GENERAL_PLUG_DIR_IN, 0);
215         if (err < 0) {
216                 dev_err(&fwspk->unit->device, "failed to set sample rate\n");
217                 goto err_buffer;
218         }
219 
220         return 0;
221 
222 err_buffer:
223         snd_pcm_lib_free_vmalloc_buffer(substream);
224 error:
225         return err;
226 }
227 
228 static int fwspk_hw_free(struct snd_pcm_substream *substream)
229 {
230         struct fwspk *fwspk = substream->private_data;
231 
232         mutex_lock(&fwspk->mutex);
233         fwspk_stop_stream(fwspk);
234         mutex_unlock(&fwspk->mutex);
235 
236         return snd_pcm_lib_free_vmalloc_buffer(substream);
237 }
238 
239 static int fwspk_prepare(struct snd_pcm_substream *substream)
240 {
241         struct fwspk *fwspk = substream->private_data;
242         int err;
243 
244         mutex_lock(&fwspk->mutex);
245 
246         if (amdtp_streaming_error(&fwspk->stream))
247                 fwspk_stop_stream(fwspk);
248 
249         if (!amdtp_stream_running(&fwspk->stream)) {
250                 err = cmp_connection_establish(&fwspk->connection,
251                         amdtp_stream_get_max_payload(&fwspk->stream));
252                 if (err < 0)
253                         goto err_mutex;
254 
255                 err = amdtp_stream_start(&fwspk->stream,
256                                          fwspk->connection.resources.channel,
257                                          fwspk->connection.speed);
258                 if (err < 0)
259                         goto err_connection;
260         }
261 
262         mutex_unlock(&fwspk->mutex);
263 
264         amdtp_stream_pcm_prepare(&fwspk->stream);
265 
266         return 0;
267 
268 err_connection:
269         cmp_connection_break(&fwspk->connection);
270 err_mutex:
271         mutex_unlock(&fwspk->mutex);
272 
273         return err;
274 }
275 
276 static int fwspk_trigger(struct snd_pcm_substream *substream, int cmd)
277 {
278         struct fwspk *fwspk = substream->private_data;
279         struct snd_pcm_substream *pcm;
280 
281         switch (cmd) {
282         case SNDRV_PCM_TRIGGER_START:
283                 pcm = substream;
284                 break;
285         case SNDRV_PCM_TRIGGER_STOP:
286                 pcm = NULL;
287                 break;
288         default:
289                 return -EINVAL;
290         }
291         amdtp_stream_pcm_trigger(&fwspk->stream, pcm);
292         return 0;
293 }
294 
295 static snd_pcm_uframes_t fwspk_pointer(struct snd_pcm_substream *substream)
296 {
297         struct fwspk *fwspk = substream->private_data;
298 
299         return amdtp_stream_pcm_pointer(&fwspk->stream);
300 }
301 
302 static int fwspk_create_pcm(struct fwspk *fwspk)
303 {
304         static struct snd_pcm_ops ops = {
305                 .open      = fwspk_open,
306                 .close     = fwspk_close,
307                 .ioctl     = snd_pcm_lib_ioctl,
308                 .hw_params = fwspk_hw_params,
309                 .hw_free   = fwspk_hw_free,
310                 .prepare   = fwspk_prepare,
311                 .trigger   = fwspk_trigger,
312                 .pointer   = fwspk_pointer,
313                 .page      = snd_pcm_lib_get_vmalloc_page,
314                 .mmap      = snd_pcm_lib_mmap_vmalloc,
315         };
316         struct snd_pcm *pcm;
317         int err;
318 
319         err = snd_pcm_new(fwspk->card, "OXFW970", 0, 1, 0, &pcm);
320         if (err < 0)
321                 return err;
322         pcm->private_data = fwspk;
323         strcpy(pcm->name, fwspk->device_info->short_name);
324         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &ops);
325         return 0;
326 }
327 
328 enum control_action { CTL_READ, CTL_WRITE };
329 enum control_attribute {
330         CTL_MIN         = 0x02,
331         CTL_MAX         = 0x03,
332         CTL_CURRENT     = 0x10,
333 };
334 
335 static int fwspk_mute_command(struct fwspk *fwspk, bool *value,
336                               enum control_action action)
337 {
338         u8 *buf;
339         u8 response_ok;
340         int err;
341 
342         buf = kmalloc(11, GFP_KERNEL);
343         if (!buf)
344                 return -ENOMEM;
345 
346         if (action == CTL_READ) {
347                 buf[0] = 0x01;          /* AV/C, STATUS */
348                 response_ok = 0x0c;     /*       STABLE */
349         } else {
350                 buf[0] = 0x00;          /* AV/C, CONTROL */
351                 response_ok = 0x09;     /*       ACCEPTED */
352         }
353         buf[1] = 0x08;                  /* audio unit 0 */
354         buf[2] = 0xb8;                  /* FUNCTION BLOCK */
355         buf[3] = 0x81;                  /* function block type: feature */
356         buf[4] = fwspk->device_info->mute_fb_id; /* function block ID */
357         buf[5] = 0x10;                  /* control attribute: current */
358         buf[6] = 0x02;                  /* selector length */
359         buf[7] = 0x00;                  /* audio channel number */
360         buf[8] = 0x01;                  /* control selector: mute */
361         buf[9] = 0x01;                  /* control data length */
362         if (action == CTL_READ)
363                 buf[10] = 0xff;
364         else
365                 buf[10] = *value ? 0x70 : 0x60;
366 
367         err = fcp_avc_transaction(fwspk->unit, buf, 11, buf, 11, 0x3fe);
368         if (err < 0)
369                 goto error;
370         if (err < 11) {
371                 dev_err(&fwspk->unit->device, "short FCP response\n");
372                 err = -EIO;
373                 goto error;
374         }
375         if (buf[0] != response_ok) {
376                 dev_err(&fwspk->unit->device, "mute command failed\n");
377                 err = -EIO;
378                 goto error;
379         }
380         if (action == CTL_READ)
381                 *value = buf[10] == 0x70;
382 
383         err = 0;
384 
385 error:
386         kfree(buf);
387 
388         return err;
389 }
390 
391 static int fwspk_volume_command(struct fwspk *fwspk, s16 *value,
392                                 unsigned int channel,
393                                 enum control_attribute attribute,
394                                 enum control_action action)
395 {
396         u8 *buf;
397         u8 response_ok;
398         int err;
399 
400         buf = kmalloc(12, GFP_KERNEL);
401         if (!buf)
402                 return -ENOMEM;
403 
404         if (action == CTL_READ) {
405                 buf[0] = 0x01;          /* AV/C, STATUS */
406                 response_ok = 0x0c;     /*       STABLE */
407         } else {
408                 buf[0] = 0x00;          /* AV/C, CONTROL */
409                 response_ok = 0x09;     /*       ACCEPTED */
410         }
411         buf[1] = 0x08;                  /* audio unit 0 */
412         buf[2] = 0xb8;                  /* FUNCTION BLOCK */
413         buf[3] = 0x81;                  /* function block type: feature */
414         buf[4] = fwspk->device_info->volume_fb_id; /* function block ID */
415         buf[5] = attribute;             /* control attribute */
416         buf[6] = 0x02;                  /* selector length */
417         buf[7] = channel;               /* audio channel number */
418         buf[8] = 0x02;                  /* control selector: volume */
419         buf[9] = 0x02;                  /* control data length */
420         if (action == CTL_READ) {
421                 buf[10] = 0xff;
422                 buf[11] = 0xff;
423         } else {
424                 buf[10] = *value >> 8;
425                 buf[11] = *value;
426         }
427 
428         err = fcp_avc_transaction(fwspk->unit, buf, 12, buf, 12, 0x3fe);
429         if (err < 0)
430                 goto error;
431         if (err < 12) {
432                 dev_err(&fwspk->unit->device, "short FCP response\n");
433                 err = -EIO;
434                 goto error;
435         }
436         if (buf[0] != response_ok) {
437                 dev_err(&fwspk->unit->device, "volume command failed\n");
438                 err = -EIO;
439                 goto error;
440         }
441         if (action == CTL_READ)
442                 *value = (buf[10] << 8) | buf[11];
443 
444         err = 0;
445 
446 error:
447         kfree(buf);
448 
449         return err;
450 }
451 
452 static int fwspk_mute_get(struct snd_kcontrol *control,
453                           struct snd_ctl_elem_value *value)
454 {
455         struct fwspk *fwspk = control->private_data;
456 
457         value->value.integer.value[0] = !fwspk->mute;
458 
459         return 0;
460 }
461 
462 static int fwspk_mute_put(struct snd_kcontrol *control,
463                           struct snd_ctl_elem_value *value)
464 {
465         struct fwspk *fwspk = control->private_data;
466         bool mute;
467         int err;
468 
469         mute = !value->value.integer.value[0];
470 
471         if (mute == fwspk->mute)
472                 return 0;
473 
474         err = fwspk_mute_command(fwspk, &mute, CTL_WRITE);
475         if (err < 0)
476                 return err;
477         fwspk->mute = mute;
478 
479         return 1;
480 }
481 
482 static int fwspk_volume_info(struct snd_kcontrol *control,
483                              struct snd_ctl_elem_info *info)
484 {
485         struct fwspk *fwspk = control->private_data;
486 
487         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
488         info->count = fwspk->device_info->mixer_channels;
489         info->value.integer.min = fwspk->volume_min;
490         info->value.integer.max = fwspk->volume_max;
491 
492         return 0;
493 }
494 
495 static const u8 channel_map[6] = { 0, 1, 4, 5, 2, 3 };
496 
497 static int fwspk_volume_get(struct snd_kcontrol *control,
498                             struct snd_ctl_elem_value *value)
499 {
500         struct fwspk *fwspk = control->private_data;
501         unsigned int i;
502 
503         for (i = 0; i < fwspk->device_info->mixer_channels; ++i)
504                 value->value.integer.value[channel_map[i]] = fwspk->volume[i];
505 
506         return 0;
507 }
508 
509 static int fwspk_volume_put(struct snd_kcontrol *control,
510                           struct snd_ctl_elem_value *value)
511 {
512         struct fwspk *fwspk = control->private_data;
513         unsigned int i, changed_channels;
514         bool equal_values = true;
515         s16 volume;
516         int err;
517 
518         for (i = 0; i < fwspk->device_info->mixer_channels; ++i) {
519                 if (value->value.integer.value[i] < fwspk->volume_min ||
520                     value->value.integer.value[i] > fwspk->volume_max)
521                         return -EINVAL;
522                 if (value->value.integer.value[i] !=
523                     value->value.integer.value[0])
524                         equal_values = false;
525         }
526 
527         changed_channels = 0;
528         for (i = 0; i < fwspk->device_info->mixer_channels; ++i)
529                 if (value->value.integer.value[channel_map[i]] !=
530                                                         fwspk->volume[i])
531                         changed_channels |= 1 << (i + 1);
532 
533         if (equal_values && changed_channels != 0)
534                 changed_channels = 1 << 0;
535 
536         for (i = 0; i <= fwspk->device_info->mixer_channels; ++i) {
537                 volume = value->value.integer.value[channel_map[i ? i - 1 : 0]];
538                 if (changed_channels & (1 << i)) {
539                         err = fwspk_volume_command(fwspk, &volume, i,
540                                                    CTL_CURRENT, CTL_WRITE);
541                         if (err < 0)
542                                 return err;
543                 }
544                 if (i > 0)
545                         fwspk->volume[i - 1] = volume;
546         }
547 
548         return changed_channels != 0;
549 }
550 
551 static int fwspk_create_mixer(struct fwspk *fwspk)
552 {
553         static const struct snd_kcontrol_new controls[] = {
554                 {
555                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
556                         .name = "PCM Playback Switch",
557                         .info = snd_ctl_boolean_mono_info,
558                         .get = fwspk_mute_get,
559                         .put = fwspk_mute_put,
560                 },
561                 {
562                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
563                         .name = "PCM Playback Volume",
564                         .info = fwspk_volume_info,
565                         .get = fwspk_volume_get,
566                         .put = fwspk_volume_put,
567                 },
568         };
569         unsigned int i, first_ch;
570         int err;
571 
572         err = fwspk_volume_command(fwspk, &fwspk->volume_min,
573                                    0, CTL_MIN, CTL_READ);
574         if (err < 0)
575                 return err;
576         err = fwspk_volume_command(fwspk, &fwspk->volume_max,
577                                    0, CTL_MAX, CTL_READ);
578         if (err < 0)
579                 return err;
580 
581         err = fwspk_mute_command(fwspk, &fwspk->mute, CTL_READ);
582         if (err < 0)
583                 return err;
584 
585         first_ch = fwspk->device_info->mixer_channels == 1 ? 0 : 1;
586         for (i = 0; i < fwspk->device_info->mixer_channels; ++i) {
587                 err = fwspk_volume_command(fwspk, &fwspk->volume[i],
588                                            first_ch + i, CTL_CURRENT, CTL_READ);
589                 if (err < 0)
590                         return err;
591         }
592 
593         for (i = 0; i < ARRAY_SIZE(controls); ++i) {
594                 err = snd_ctl_add(fwspk->card,
595                                   snd_ctl_new1(&controls[i], fwspk));
596                 if (err < 0)
597                         return err;
598         }
599 
600         return 0;
601 }
602 
603 static u32 fwspk_read_firmware_version(struct fw_unit *unit)
604 {
605         __be32 data;
606         int err;
607 
608         err = snd_fw_transaction(unit, TCODE_READ_QUADLET_REQUEST,
609                                  OXFORD_FIRMWARE_ID_ADDRESS, &data, 4, 0);
610         return err >= 0 ? be32_to_cpu(data) : 0;
611 }
612 
613 static void fwspk_card_free(struct snd_card *card)
614 {
615         struct fwspk *fwspk = card->private_data;
616 
617         amdtp_stream_destroy(&fwspk->stream);
618         cmp_connection_destroy(&fwspk->connection);
619         fw_unit_put(fwspk->unit);
620         mutex_destroy(&fwspk->mutex);
621 }
622 
623 static int fwspk_probe(struct fw_unit *unit,
624                        const struct ieee1394_device_id *id)
625 {
626         struct fw_device *fw_dev = fw_parent_device(unit);
627         struct snd_card *card;
628         struct fwspk *fwspk;
629         u32 firmware;
630         int err;
631 
632         err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
633                            sizeof(*fwspk), &card);
634         if (err < 0)
635                 return err;
636 
637         fwspk = card->private_data;
638         fwspk->card = card;
639         mutex_init(&fwspk->mutex);
640         fwspk->unit = fw_unit_get(unit);
641         fwspk->device_info = (const struct device_info *)id->driver_data;
642 
643         err = cmp_connection_init(&fwspk->connection, unit, CMP_INPUT, 0);
644         if (err < 0)
645                 goto err_unit;
646 
647         err = amdtp_stream_init(&fwspk->stream, unit, AMDTP_OUT_STREAM,
648                                 CIP_NONBLOCKING);
649         if (err < 0)
650                 goto err_connection;
651 
652         card->private_free = fwspk_card_free;
653 
654         strcpy(card->driver, fwspk->device_info->driver_name);
655         strcpy(card->shortname, fwspk->device_info->short_name);
656         firmware = fwspk_read_firmware_version(unit);
657         snprintf(card->longname, sizeof(card->longname),
658                  "%s (OXFW%x %04x), GUID %08x%08x at %s, S%d",
659                  fwspk->device_info->long_name,
660                  firmware >> 20, firmware & 0xffff,
661                  fw_dev->config_rom[3], fw_dev->config_rom[4],
662                  dev_name(&unit->device), 100 << fw_dev->max_speed);
663         strcpy(card->mixername, "OXFW970");
664 
665         err = fwspk_create_pcm(fwspk);
666         if (err < 0)
667                 goto error;
668 
669         err = fwspk_create_mixer(fwspk);
670         if (err < 0)
671                 goto error;
672 
673         err = snd_card_register(card);
674         if (err < 0)
675                 goto error;
676 
677         dev_set_drvdata(&unit->device, fwspk);
678 
679         return 0;
680 
681 err_connection:
682         cmp_connection_destroy(&fwspk->connection);
683 err_unit:
684         fw_unit_put(fwspk->unit);
685         mutex_destroy(&fwspk->mutex);
686 error:
687         snd_card_free(card);
688         return err;
689 }
690 
691 static void fwspk_bus_reset(struct fw_unit *unit)
692 {
693         struct fwspk *fwspk = dev_get_drvdata(&unit->device);
694 
695         fcp_bus_reset(fwspk->unit);
696 
697         if (cmp_connection_update(&fwspk->connection) < 0) {
698                 amdtp_stream_pcm_abort(&fwspk->stream);
699                 mutex_lock(&fwspk->mutex);
700                 fwspk_stop_stream(fwspk);
701                 mutex_unlock(&fwspk->mutex);
702                 return;
703         }
704 
705         amdtp_stream_update(&fwspk->stream);
706 }
707 
708 static void fwspk_remove(struct fw_unit *unit)
709 {
710         struct fwspk *fwspk = dev_get_drvdata(&unit->device);
711 
712         amdtp_stream_pcm_abort(&fwspk->stream);
713         snd_card_disconnect(fwspk->card);
714 
715         mutex_lock(&fwspk->mutex);
716         fwspk_stop_stream(fwspk);
717         mutex_unlock(&fwspk->mutex);
718 
719         snd_card_free_when_closed(fwspk->card);
720 }
721 
722 static const struct device_info griffin_firewave = {
723         .driver_name = "FireWave",
724         .short_name  = "FireWave",
725         .long_name   = "Griffin FireWave Surround",
726         .pcm_constraints = firewave_constraints,
727         .mixer_channels = 6,
728         .mute_fb_id   = 0x01,
729         .volume_fb_id = 0x02,
730 };
731 
732 static const struct device_info lacie_speakers = {
733         .driver_name = "FWSpeakers",
734         .short_name  = "FireWire Speakers",
735         .long_name   = "LaCie FireWire Speakers",
736         .pcm_constraints = lacie_speakers_constraints,
737         .mixer_channels = 1,
738         .mute_fb_id   = 0x01,
739         .volume_fb_id = 0x01,
740 };
741 
742 static const struct ieee1394_device_id fwspk_id_table[] = {
743         {
744                 .match_flags  = IEEE1394_MATCH_VENDOR_ID |
745                                 IEEE1394_MATCH_MODEL_ID |
746                                 IEEE1394_MATCH_SPECIFIER_ID |
747                                 IEEE1394_MATCH_VERSION,
748                 .vendor_id    = VENDOR_GRIFFIN,
749                 .model_id     = 0x00f970,
750                 .specifier_id = SPECIFIER_1394TA,
751                 .version      = VERSION_AVC,
752                 .driver_data  = (kernel_ulong_t)&griffin_firewave,
753         },
754         {
755                 .match_flags  = IEEE1394_MATCH_VENDOR_ID |
756                                 IEEE1394_MATCH_MODEL_ID |
757                                 IEEE1394_MATCH_SPECIFIER_ID |
758                                 IEEE1394_MATCH_VERSION,
759                 .vendor_id    = VENDOR_LACIE,
760                 .model_id     = 0x00f970,
761                 .specifier_id = SPECIFIER_1394TA,
762                 .version      = VERSION_AVC,
763                 .driver_data  = (kernel_ulong_t)&lacie_speakers,
764         },
765         { }
766 };
767 MODULE_DEVICE_TABLE(ieee1394, fwspk_id_table);
768 
769 static struct fw_driver fwspk_driver = {
770         .driver   = {
771                 .owner  = THIS_MODULE,
772                 .name   = KBUILD_MODNAME,
773                 .bus    = &fw_bus_type,
774         },
775         .probe    = fwspk_probe,
776         .update   = fwspk_bus_reset,
777         .remove   = fwspk_remove,
778         .id_table = fwspk_id_table,
779 };
780 
781 static int __init alsa_fwspk_init(void)
782 {
783         return driver_register(&fwspk_driver.driver);
784 }
785 
786 static void __exit alsa_fwspk_exit(void)
787 {
788         driver_unregister(&fwspk_driver.driver);
789 }
790 
791 module_init(alsa_fwspk_init);
792 module_exit(alsa_fwspk_exit);
793 

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