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0008 #include <asm/byteorder.h>
0009 #include <linux/delay.h>
0010 #include <linux/device.h>
0011 #include <linux/firewire.h>
0012 #include <linux/firewire-constants.h>
0013 #include <linux/module.h>
0014 #include <linux/mod_devicetable.h>
0015 #include <linux/mutex.h>
0016 #include <linux/string.h>
0017 #include <sound/control.h>
0018 #include <sound/core.h>
0019 #include <sound/initval.h>
0020 #include <sound/pcm.h>
0021 #include <sound/tlv.h>
0022 #include "lib.h"
0023 #include "iso-resources.h"
0024 #include "packets-buffer.h"
0025
0026 #define OUI_APPLE 0x000a27
0027 #define MODEL_APPLE_ISIGHT 0x000008
0028 #define SW_ISIGHT_AUDIO 0x000010
0029
0030 #define REG_AUDIO_ENABLE 0x000
0031 #define AUDIO_ENABLE 0x80000000
0032 #define REG_DEF_AUDIO_GAIN 0x204
0033 #define REG_GAIN_RAW_START 0x210
0034 #define REG_GAIN_RAW_END 0x214
0035 #define REG_GAIN_DB_START 0x218
0036 #define REG_GAIN_DB_END 0x21c
0037 #define REG_SAMPLE_RATE_INQUIRY 0x280
0038 #define REG_ISO_TX_CONFIG 0x300
0039 #define SPEED_SHIFT 16
0040 #define REG_SAMPLE_RATE 0x400
0041 #define RATE_48000 0x80000000
0042 #define REG_GAIN 0x500
0043 #define REG_MUTE 0x504
0044
0045 #define MAX_FRAMES_PER_PACKET 475
0046
0047 #define QUEUE_LENGTH 20
0048
0049 struct isight {
0050 struct snd_card *card;
0051 struct fw_unit *unit;
0052 struct fw_device *device;
0053 u64 audio_base;
0054 struct snd_pcm_substream *pcm;
0055 struct mutex mutex;
0056 struct iso_packets_buffer buffer;
0057 struct fw_iso_resources resources;
0058 struct fw_iso_context *context;
0059 bool pcm_active;
0060 bool pcm_running;
0061 bool first_packet;
0062 int packet_index;
0063 u32 total_samples;
0064 unsigned int buffer_pointer;
0065 unsigned int period_counter;
0066 s32 gain_min, gain_max;
0067 unsigned int gain_tlv[4];
0068 };
0069
0070 struct audio_payload {
0071 __be32 sample_count;
0072 __be32 signature;
0073 __be32 sample_total;
0074 __be32 reserved;
0075 __be16 samples[2 * MAX_FRAMES_PER_PACKET];
0076 };
0077
0078 MODULE_DESCRIPTION("iSight audio driver");
0079 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
0080 MODULE_LICENSE("GPL v2");
0081
0082 static struct fw_iso_packet audio_packet = {
0083 .payload_length = sizeof(struct audio_payload),
0084 .interrupt = 1,
0085 .header_length = 4,
0086 };
0087
0088 static void isight_update_pointers(struct isight *isight, unsigned int count)
0089 {
0090 struct snd_pcm_runtime *runtime = isight->pcm->runtime;
0091 unsigned int ptr;
0092
0093 smp_wmb();
0094
0095 ptr = isight->buffer_pointer;
0096 ptr += count;
0097 if (ptr >= runtime->buffer_size)
0098 ptr -= runtime->buffer_size;
0099 WRITE_ONCE(isight->buffer_pointer, ptr);
0100
0101 isight->period_counter += count;
0102 if (isight->period_counter >= runtime->period_size) {
0103 isight->period_counter -= runtime->period_size;
0104 snd_pcm_period_elapsed(isight->pcm);
0105 }
0106 }
0107
0108 static void isight_samples(struct isight *isight,
0109 const __be16 *samples, unsigned int count)
0110 {
0111 struct snd_pcm_runtime *runtime;
0112 unsigned int count1;
0113
0114 if (!READ_ONCE(isight->pcm_running))
0115 return;
0116
0117 runtime = isight->pcm->runtime;
0118 if (isight->buffer_pointer + count <= runtime->buffer_size) {
0119 memcpy(runtime->dma_area + isight->buffer_pointer * 4,
0120 samples, count * 4);
0121 } else {
0122 count1 = runtime->buffer_size - isight->buffer_pointer;
0123 memcpy(runtime->dma_area + isight->buffer_pointer * 4,
0124 samples, count1 * 4);
0125 samples += count1 * 2;
0126 memcpy(runtime->dma_area, samples, (count - count1) * 4);
0127 }
0128
0129 isight_update_pointers(isight, count);
0130 }
0131
0132 static void isight_pcm_abort(struct isight *isight)
0133 {
0134 if (READ_ONCE(isight->pcm_active))
0135 snd_pcm_stop_xrun(isight->pcm);
0136 }
0137
0138 static void isight_dropped_samples(struct isight *isight, unsigned int total)
0139 {
0140 struct snd_pcm_runtime *runtime;
0141 u32 dropped;
0142 unsigned int count1;
0143
0144 if (!READ_ONCE(isight->pcm_running))
0145 return;
0146
0147 runtime = isight->pcm->runtime;
0148 dropped = total - isight->total_samples;
0149 if (dropped < runtime->buffer_size) {
0150 if (isight->buffer_pointer + dropped <= runtime->buffer_size) {
0151 memset(runtime->dma_area + isight->buffer_pointer * 4,
0152 0, dropped * 4);
0153 } else {
0154 count1 = runtime->buffer_size - isight->buffer_pointer;
0155 memset(runtime->dma_area + isight->buffer_pointer * 4,
0156 0, count1 * 4);
0157 memset(runtime->dma_area, 0, (dropped - count1) * 4);
0158 }
0159 isight_update_pointers(isight, dropped);
0160 } else {
0161 isight_pcm_abort(isight);
0162 }
0163 }
0164
0165 static void isight_packet(struct fw_iso_context *context, u32 cycle,
0166 size_t header_length, void *header, void *data)
0167 {
0168 struct isight *isight = data;
0169 const struct audio_payload *payload;
0170 unsigned int index, length, count, total;
0171 int err;
0172
0173 if (isight->packet_index < 0)
0174 return;
0175 index = isight->packet_index;
0176 payload = isight->buffer.packets[index].buffer;
0177 length = be32_to_cpup(header) >> 16;
0178
0179 if (likely(length >= 16 &&
0180 payload->signature == cpu_to_be32(0x73676874))) {
0181 count = be32_to_cpu(payload->sample_count);
0182 if (likely(count <= (length - 16) / 4)) {
0183 total = be32_to_cpu(payload->sample_total);
0184 if (unlikely(total != isight->total_samples)) {
0185 if (!isight->first_packet)
0186 isight_dropped_samples(isight, total);
0187 isight->first_packet = false;
0188 isight->total_samples = total;
0189 }
0190
0191 isight_samples(isight, payload->samples, count);
0192 isight->total_samples += count;
0193 }
0194 }
0195
0196 err = fw_iso_context_queue(isight->context, &audio_packet,
0197 &isight->buffer.iso_buffer,
0198 isight->buffer.packets[index].offset);
0199 if (err < 0) {
0200 dev_err(&isight->unit->device, "queueing error: %d\n", err);
0201 isight_pcm_abort(isight);
0202 isight->packet_index = -1;
0203 return;
0204 }
0205 fw_iso_context_queue_flush(isight->context);
0206
0207 if (++index >= QUEUE_LENGTH)
0208 index = 0;
0209 isight->packet_index = index;
0210 }
0211
0212 static int isight_connect(struct isight *isight)
0213 {
0214 int ch, err;
0215 __be32 value;
0216
0217 retry_after_bus_reset:
0218 ch = fw_iso_resources_allocate(&isight->resources,
0219 sizeof(struct audio_payload),
0220 isight->device->max_speed);
0221 if (ch < 0) {
0222 err = ch;
0223 goto error;
0224 }
0225
0226 value = cpu_to_be32(ch | (isight->device->max_speed << SPEED_SHIFT));
0227 err = snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST,
0228 isight->audio_base + REG_ISO_TX_CONFIG,
0229 &value, 4, FW_FIXED_GENERATION |
0230 isight->resources.generation);
0231 if (err == -EAGAIN) {
0232 fw_iso_resources_free(&isight->resources);
0233 goto retry_after_bus_reset;
0234 } else if (err < 0) {
0235 goto err_resources;
0236 }
0237
0238 return 0;
0239
0240 err_resources:
0241 fw_iso_resources_free(&isight->resources);
0242 error:
0243 return err;
0244 }
0245
0246 static int isight_open(struct snd_pcm_substream *substream)
0247 {
0248 static const struct snd_pcm_hardware hardware = {
0249 .info = SNDRV_PCM_INFO_MMAP |
0250 SNDRV_PCM_INFO_MMAP_VALID |
0251 SNDRV_PCM_INFO_BATCH |
0252 SNDRV_PCM_INFO_INTERLEAVED |
0253 SNDRV_PCM_INFO_BLOCK_TRANSFER,
0254 .formats = SNDRV_PCM_FMTBIT_S16_BE,
0255 .rates = SNDRV_PCM_RATE_48000,
0256 .rate_min = 48000,
0257 .rate_max = 48000,
0258 .channels_min = 2,
0259 .channels_max = 2,
0260 .buffer_bytes_max = 4 * 1024 * 1024,
0261 .period_bytes_min = MAX_FRAMES_PER_PACKET * 4,
0262 .period_bytes_max = 1024 * 1024,
0263 .periods_min = 2,
0264 .periods_max = UINT_MAX,
0265 };
0266 struct isight *isight = substream->private_data;
0267
0268 substream->runtime->hw = hardware;
0269
0270 return iso_packets_buffer_init(&isight->buffer, isight->unit,
0271 QUEUE_LENGTH,
0272 sizeof(struct audio_payload),
0273 DMA_FROM_DEVICE);
0274 }
0275
0276 static int isight_close(struct snd_pcm_substream *substream)
0277 {
0278 struct isight *isight = substream->private_data;
0279
0280 iso_packets_buffer_destroy(&isight->buffer, isight->unit);
0281
0282 return 0;
0283 }
0284
0285 static int isight_hw_params(struct snd_pcm_substream *substream,
0286 struct snd_pcm_hw_params *hw_params)
0287 {
0288 struct isight *isight = substream->private_data;
0289
0290 WRITE_ONCE(isight->pcm_active, true);
0291
0292 return 0;
0293 }
0294
0295 static int reg_read(struct isight *isight, int offset, __be32 *value)
0296 {
0297 return snd_fw_transaction(isight->unit, TCODE_READ_QUADLET_REQUEST,
0298 isight->audio_base + offset, value, 4, 0);
0299 }
0300
0301 static int reg_write(struct isight *isight, int offset, __be32 value)
0302 {
0303 return snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST,
0304 isight->audio_base + offset, &value, 4, 0);
0305 }
0306
0307 static void isight_stop_streaming(struct isight *isight)
0308 {
0309 __be32 value;
0310
0311 if (!isight->context)
0312 return;
0313
0314 fw_iso_context_stop(isight->context);
0315 fw_iso_context_destroy(isight->context);
0316 isight->context = NULL;
0317 fw_iso_resources_free(&isight->resources);
0318 value = 0;
0319 snd_fw_transaction(isight->unit, TCODE_WRITE_QUADLET_REQUEST,
0320 isight->audio_base + REG_AUDIO_ENABLE,
0321 &value, 4, FW_QUIET);
0322 }
0323
0324 static int isight_hw_free(struct snd_pcm_substream *substream)
0325 {
0326 struct isight *isight = substream->private_data;
0327
0328 WRITE_ONCE(isight->pcm_active, false);
0329
0330 mutex_lock(&isight->mutex);
0331 isight_stop_streaming(isight);
0332 mutex_unlock(&isight->mutex);
0333
0334 return 0;
0335 }
0336
0337 static int isight_start_streaming(struct isight *isight)
0338 {
0339 unsigned int i;
0340 int err;
0341
0342 if (isight->context) {
0343 if (isight->packet_index < 0)
0344 isight_stop_streaming(isight);
0345 else
0346 return 0;
0347 }
0348
0349 err = reg_write(isight, REG_SAMPLE_RATE, cpu_to_be32(RATE_48000));
0350 if (err < 0)
0351 goto error;
0352
0353 err = isight_connect(isight);
0354 if (err < 0)
0355 goto error;
0356
0357 err = reg_write(isight, REG_AUDIO_ENABLE, cpu_to_be32(AUDIO_ENABLE));
0358 if (err < 0)
0359 goto err_resources;
0360
0361 isight->context = fw_iso_context_create(isight->device->card,
0362 FW_ISO_CONTEXT_RECEIVE,
0363 isight->resources.channel,
0364 isight->device->max_speed,
0365 4, isight_packet, isight);
0366 if (IS_ERR(isight->context)) {
0367 err = PTR_ERR(isight->context);
0368 isight->context = NULL;
0369 goto err_resources;
0370 }
0371
0372 for (i = 0; i < QUEUE_LENGTH; ++i) {
0373 err = fw_iso_context_queue(isight->context, &audio_packet,
0374 &isight->buffer.iso_buffer,
0375 isight->buffer.packets[i].offset);
0376 if (err < 0)
0377 goto err_context;
0378 }
0379
0380 isight->first_packet = true;
0381 isight->packet_index = 0;
0382
0383 err = fw_iso_context_start(isight->context, -1, 0,
0384 FW_ISO_CONTEXT_MATCH_ALL_TAGS);
0385 if (err < 0)
0386 goto err_context;
0387
0388 return 0;
0389
0390 err_context:
0391 fw_iso_context_destroy(isight->context);
0392 isight->context = NULL;
0393 err_resources:
0394 fw_iso_resources_free(&isight->resources);
0395 reg_write(isight, REG_AUDIO_ENABLE, 0);
0396 error:
0397 return err;
0398 }
0399
0400 static int isight_prepare(struct snd_pcm_substream *substream)
0401 {
0402 struct isight *isight = substream->private_data;
0403 int err;
0404
0405 isight->buffer_pointer = 0;
0406 isight->period_counter = 0;
0407
0408 mutex_lock(&isight->mutex);
0409 err = isight_start_streaming(isight);
0410 mutex_unlock(&isight->mutex);
0411
0412 return err;
0413 }
0414
0415 static int isight_trigger(struct snd_pcm_substream *substream, int cmd)
0416 {
0417 struct isight *isight = substream->private_data;
0418
0419 switch (cmd) {
0420 case SNDRV_PCM_TRIGGER_START:
0421 WRITE_ONCE(isight->pcm_running, true);
0422 break;
0423 case SNDRV_PCM_TRIGGER_STOP:
0424 WRITE_ONCE(isight->pcm_running, false);
0425 break;
0426 default:
0427 return -EINVAL;
0428 }
0429 return 0;
0430 }
0431
0432 static snd_pcm_uframes_t isight_pointer(struct snd_pcm_substream *substream)
0433 {
0434 struct isight *isight = substream->private_data;
0435
0436 return READ_ONCE(isight->buffer_pointer);
0437 }
0438
0439 static int isight_create_pcm(struct isight *isight)
0440 {
0441 static const struct snd_pcm_ops ops = {
0442 .open = isight_open,
0443 .close = isight_close,
0444 .hw_params = isight_hw_params,
0445 .hw_free = isight_hw_free,
0446 .prepare = isight_prepare,
0447 .trigger = isight_trigger,
0448 .pointer = isight_pointer,
0449 };
0450 struct snd_pcm *pcm;
0451 int err;
0452
0453 err = snd_pcm_new(isight->card, "iSight", 0, 0, 1, &pcm);
0454 if (err < 0)
0455 return err;
0456 pcm->private_data = isight;
0457 strcpy(pcm->name, "iSight");
0458 isight->pcm = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
0459 isight->pcm->ops = &ops;
0460 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
0461
0462 return 0;
0463 }
0464
0465 static int isight_gain_info(struct snd_kcontrol *ctl,
0466 struct snd_ctl_elem_info *info)
0467 {
0468 struct isight *isight = ctl->private_data;
0469
0470 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
0471 info->count = 1;
0472 info->value.integer.min = isight->gain_min;
0473 info->value.integer.max = isight->gain_max;
0474
0475 return 0;
0476 }
0477
0478 static int isight_gain_get(struct snd_kcontrol *ctl,
0479 struct snd_ctl_elem_value *value)
0480 {
0481 struct isight *isight = ctl->private_data;
0482 __be32 gain;
0483 int err;
0484
0485 err = reg_read(isight, REG_GAIN, &gain);
0486 if (err < 0)
0487 return err;
0488
0489 value->value.integer.value[0] = (s32)be32_to_cpu(gain);
0490
0491 return 0;
0492 }
0493
0494 static int isight_gain_put(struct snd_kcontrol *ctl,
0495 struct snd_ctl_elem_value *value)
0496 {
0497 struct isight *isight = ctl->private_data;
0498
0499 if (value->value.integer.value[0] < isight->gain_min ||
0500 value->value.integer.value[0] > isight->gain_max)
0501 return -EINVAL;
0502
0503 return reg_write(isight, REG_GAIN,
0504 cpu_to_be32(value->value.integer.value[0]));
0505 }
0506
0507 static int isight_mute_get(struct snd_kcontrol *ctl,
0508 struct snd_ctl_elem_value *value)
0509 {
0510 struct isight *isight = ctl->private_data;
0511 __be32 mute;
0512 int err;
0513
0514 err = reg_read(isight, REG_MUTE, &mute);
0515 if (err < 0)
0516 return err;
0517
0518 value->value.integer.value[0] = !mute;
0519
0520 return 0;
0521 }
0522
0523 static int isight_mute_put(struct snd_kcontrol *ctl,
0524 struct snd_ctl_elem_value *value)
0525 {
0526 struct isight *isight = ctl->private_data;
0527
0528 return reg_write(isight, REG_MUTE,
0529 (__force __be32)!value->value.integer.value[0]);
0530 }
0531
0532 static int isight_create_mixer(struct isight *isight)
0533 {
0534 static const struct snd_kcontrol_new gain_control = {
0535 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
0536 .name = "Mic Capture Volume",
0537 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
0538 SNDRV_CTL_ELEM_ACCESS_TLV_READ,
0539 .info = isight_gain_info,
0540 .get = isight_gain_get,
0541 .put = isight_gain_put,
0542 };
0543 static const struct snd_kcontrol_new mute_control = {
0544 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
0545 .name = "Mic Capture Switch",
0546 .info = snd_ctl_boolean_mono_info,
0547 .get = isight_mute_get,
0548 .put = isight_mute_put,
0549 };
0550 __be32 value;
0551 struct snd_kcontrol *ctl;
0552 int err;
0553
0554 err = reg_read(isight, REG_GAIN_RAW_START, &value);
0555 if (err < 0)
0556 return err;
0557 isight->gain_min = be32_to_cpu(value);
0558
0559 err = reg_read(isight, REG_GAIN_RAW_END, &value);
0560 if (err < 0)
0561 return err;
0562 isight->gain_max = be32_to_cpu(value);
0563
0564 isight->gain_tlv[SNDRV_CTL_TLVO_TYPE] = SNDRV_CTL_TLVT_DB_MINMAX;
0565 isight->gain_tlv[SNDRV_CTL_TLVO_LEN] = 2 * sizeof(unsigned int);
0566
0567 err = reg_read(isight, REG_GAIN_DB_START, &value);
0568 if (err < 0)
0569 return err;
0570 isight->gain_tlv[SNDRV_CTL_TLVO_DB_MINMAX_MIN] =
0571 (s32)be32_to_cpu(value) * 100;
0572
0573 err = reg_read(isight, REG_GAIN_DB_END, &value);
0574 if (err < 0)
0575 return err;
0576 isight->gain_tlv[SNDRV_CTL_TLVO_DB_MINMAX_MAX] =
0577 (s32)be32_to_cpu(value) * 100;
0578
0579 ctl = snd_ctl_new1(&gain_control, isight);
0580 if (ctl)
0581 ctl->tlv.p = isight->gain_tlv;
0582 err = snd_ctl_add(isight->card, ctl);
0583 if (err < 0)
0584 return err;
0585
0586 err = snd_ctl_add(isight->card, snd_ctl_new1(&mute_control, isight));
0587 if (err < 0)
0588 return err;
0589
0590 return 0;
0591 }
0592
0593 static void isight_card_free(struct snd_card *card)
0594 {
0595 struct isight *isight = card->private_data;
0596
0597 fw_iso_resources_destroy(&isight->resources);
0598 }
0599
0600 static u64 get_unit_base(struct fw_unit *unit)
0601 {
0602 struct fw_csr_iterator i;
0603 int key, value;
0604
0605 fw_csr_iterator_init(&i, unit->directory);
0606 while (fw_csr_iterator_next(&i, &key, &value))
0607 if (key == CSR_OFFSET)
0608 return CSR_REGISTER_BASE + value * 4;
0609 return 0;
0610 }
0611
0612 static int isight_probe(struct fw_unit *unit,
0613 const struct ieee1394_device_id *id)
0614 {
0615 struct fw_device *fw_dev = fw_parent_device(unit);
0616 struct snd_card *card;
0617 struct isight *isight;
0618 int err;
0619
0620 err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
0621 sizeof(*isight), &card);
0622 if (err < 0)
0623 return err;
0624
0625 isight = card->private_data;
0626 isight->card = card;
0627 mutex_init(&isight->mutex);
0628 isight->unit = fw_unit_get(unit);
0629 isight->device = fw_dev;
0630 isight->audio_base = get_unit_base(unit);
0631 if (!isight->audio_base) {
0632 dev_err(&unit->device, "audio unit base not found\n");
0633 err = -ENXIO;
0634 goto error;
0635 }
0636 fw_iso_resources_init(&isight->resources, unit);
0637
0638 card->private_free = isight_card_free;
0639
0640 strcpy(card->driver, "iSight");
0641 strcpy(card->shortname, "Apple iSight");
0642 snprintf(card->longname, sizeof(card->longname),
0643 "Apple iSight (GUID %08x%08x) at %s, S%d",
0644 fw_dev->config_rom[3], fw_dev->config_rom[4],
0645 dev_name(&unit->device), 100 << fw_dev->max_speed);
0646 strcpy(card->mixername, "iSight");
0647
0648 err = isight_create_pcm(isight);
0649 if (err < 0)
0650 goto error;
0651
0652 err = isight_create_mixer(isight);
0653 if (err < 0)
0654 goto error;
0655
0656 err = snd_card_register(card);
0657 if (err < 0)
0658 goto error;
0659
0660 dev_set_drvdata(&unit->device, isight);
0661
0662 return 0;
0663 error:
0664 snd_card_free(card);
0665
0666 mutex_destroy(&isight->mutex);
0667 fw_unit_put(isight->unit);
0668
0669 return err;
0670 }
0671
0672 static void isight_bus_reset(struct fw_unit *unit)
0673 {
0674 struct isight *isight = dev_get_drvdata(&unit->device);
0675
0676 if (fw_iso_resources_update(&isight->resources) < 0) {
0677 isight_pcm_abort(isight);
0678
0679 mutex_lock(&isight->mutex);
0680 isight_stop_streaming(isight);
0681 mutex_unlock(&isight->mutex);
0682 }
0683 }
0684
0685 static void isight_remove(struct fw_unit *unit)
0686 {
0687 struct isight *isight = dev_get_drvdata(&unit->device);
0688
0689 isight_pcm_abort(isight);
0690
0691 snd_card_disconnect(isight->card);
0692
0693 mutex_lock(&isight->mutex);
0694 isight_stop_streaming(isight);
0695 mutex_unlock(&isight->mutex);
0696
0697
0698 snd_card_free(isight->card);
0699
0700 mutex_destroy(&isight->mutex);
0701 fw_unit_put(isight->unit);
0702 }
0703
0704 static const struct ieee1394_device_id isight_id_table[] = {
0705 {
0706 .match_flags = IEEE1394_MATCH_SPECIFIER_ID |
0707 IEEE1394_MATCH_VERSION,
0708 .specifier_id = OUI_APPLE,
0709 .version = SW_ISIGHT_AUDIO,
0710 },
0711 { }
0712 };
0713 MODULE_DEVICE_TABLE(ieee1394, isight_id_table);
0714
0715 static struct fw_driver isight_driver = {
0716 .driver = {
0717 .owner = THIS_MODULE,
0718 .name = KBUILD_MODNAME,
0719 .bus = &fw_bus_type,
0720 },
0721 .probe = isight_probe,
0722 .update = isight_bus_reset,
0723 .remove = isight_remove,
0724 .id_table = isight_id_table,
0725 };
0726
0727 static int __init alsa_isight_init(void)
0728 {
0729 return driver_register(&isight_driver.driver);
0730 }
0731
0732 static void __exit alsa_isight_exit(void)
0733 {
0734 driver_unregister(&isight_driver.driver);
0735 }
0736
0737 module_init(alsa_isight_init);
0738 module_exit(alsa_isight_exit);
