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223 lines
5.6 KiB
223 lines
5.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* motu.c - a part of driver for MOTU FireWire series |
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* |
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* Copyright (c) 2015-2017 Takashi Sakamoto <[email protected]> |
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*/ |
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#include "motu.h" |
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#define OUI_MOTU 0x0001f2 |
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MODULE_DESCRIPTION("MOTU FireWire driver"); |
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MODULE_AUTHOR("Takashi Sakamoto <[email protected]>"); |
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MODULE_LICENSE("GPL v2"); |
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const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT] = { |
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/* mode 0 */ |
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[0] = 44100, |
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[1] = 48000, |
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/* mode 1 */ |
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[2] = 88200, |
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[3] = 96000, |
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/* mode 2 */ |
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[4] = 176400, |
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[5] = 192000, |
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}; |
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static void name_card(struct snd_motu *motu) |
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{ |
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struct fw_device *fw_dev = fw_parent_device(motu->unit); |
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struct fw_csr_iterator it; |
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int key, val; |
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u32 version = 0; |
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fw_csr_iterator_init(&it, motu->unit->directory); |
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while (fw_csr_iterator_next(&it, &key, &val)) { |
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switch (key) { |
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case CSR_MODEL: |
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version = val; |
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break; |
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} |
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} |
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strcpy(motu->card->driver, "FW-MOTU"); |
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strcpy(motu->card->shortname, motu->spec->name); |
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strcpy(motu->card->mixername, motu->spec->name); |
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snprintf(motu->card->longname, sizeof(motu->card->longname), |
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"MOTU %s (version:%06x), GUID %08x%08x at %s, S%d", |
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motu->spec->name, version, |
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fw_dev->config_rom[3], fw_dev->config_rom[4], |
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dev_name(&motu->unit->device), 100 << fw_dev->max_speed); |
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} |
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static void motu_card_free(struct snd_card *card) |
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{ |
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struct snd_motu *motu = card->private_data; |
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snd_motu_transaction_unregister(motu); |
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snd_motu_stream_destroy_duplex(motu); |
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} |
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static void do_registration(struct work_struct *work) |
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{ |
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struct snd_motu *motu = container_of(work, struct snd_motu, dwork.work); |
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int err; |
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if (motu->registered) |
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return; |
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err = snd_card_new(&motu->unit->device, -1, NULL, THIS_MODULE, 0, |
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&motu->card); |
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if (err < 0) |
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return; |
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motu->card->private_free = motu_card_free; |
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motu->card->private_data = motu; |
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name_card(motu); |
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err = snd_motu_transaction_register(motu); |
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if (err < 0) |
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goto error; |
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err = snd_motu_stream_init_duplex(motu); |
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if (err < 0) |
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goto error; |
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snd_motu_proc_init(motu); |
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err = snd_motu_create_pcm_devices(motu); |
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if (err < 0) |
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goto error; |
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if ((motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_2ND_Q) || |
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(motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_3RD_Q) || |
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(motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_2ND_Q) || |
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(motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_3RD_Q)) { |
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err = snd_motu_create_midi_devices(motu); |
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if (err < 0) |
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goto error; |
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} |
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err = snd_motu_create_hwdep_device(motu); |
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if (err < 0) |
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goto error; |
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err = snd_card_register(motu->card); |
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if (err < 0) |
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goto error; |
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motu->registered = true; |
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return; |
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error: |
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snd_card_free(motu->card); |
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dev_info(&motu->unit->device, |
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"Sound card registration failed: %d\n", err); |
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} |
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static int motu_probe(struct fw_unit *unit, |
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const struct ieee1394_device_id *entry) |
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{ |
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struct snd_motu *motu; |
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/* Allocate this independently of sound card instance. */ |
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motu = devm_kzalloc(&unit->device, sizeof(struct snd_motu), GFP_KERNEL); |
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if (!motu) |
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return -ENOMEM; |
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motu->unit = fw_unit_get(unit); |
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dev_set_drvdata(&unit->device, motu); |
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motu->spec = (const struct snd_motu_spec *)entry->driver_data; |
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mutex_init(&motu->mutex); |
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spin_lock_init(&motu->lock); |
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init_waitqueue_head(&motu->hwdep_wait); |
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/* Allocate and register this sound card later. */ |
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INIT_DEFERRABLE_WORK(&motu->dwork, do_registration); |
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snd_fw_schedule_registration(unit, &motu->dwork); |
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return 0; |
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} |
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static void motu_remove(struct fw_unit *unit) |
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{ |
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struct snd_motu *motu = dev_get_drvdata(&unit->device); |
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/* |
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* Confirm to stop the work for registration before the sound card is |
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* going to be released. The work is not scheduled again because bus |
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* reset handler is not called anymore. |
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*/ |
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cancel_delayed_work_sync(&motu->dwork); |
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if (motu->registered) { |
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// Block till all of ALSA character devices are released. |
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snd_card_free(motu->card); |
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} |
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mutex_destroy(&motu->mutex); |
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fw_unit_put(motu->unit); |
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} |
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static void motu_bus_update(struct fw_unit *unit) |
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{ |
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struct snd_motu *motu = dev_get_drvdata(&unit->device); |
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/* Postpone a workqueue for deferred registration. */ |
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if (!motu->registered) |
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snd_fw_schedule_registration(unit, &motu->dwork); |
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/* The handler address register becomes initialized. */ |
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snd_motu_transaction_reregister(motu); |
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} |
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#define SND_MOTU_DEV_ENTRY(model, data) \ |
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{ \ |
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.match_flags = IEEE1394_MATCH_VENDOR_ID | \ |
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IEEE1394_MATCH_SPECIFIER_ID | \ |
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IEEE1394_MATCH_VERSION, \ |
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.vendor_id = OUI_MOTU, \ |
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.specifier_id = OUI_MOTU, \ |
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.version = model, \ |
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.driver_data = (kernel_ulong_t)data, \ |
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} |
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static const struct ieee1394_device_id motu_id_table[] = { |
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SND_MOTU_DEV_ENTRY(0x000003, &snd_motu_spec_828mk2), |
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SND_MOTU_DEV_ENTRY(0x000009, &snd_motu_spec_traveler), |
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SND_MOTU_DEV_ENTRY(0x00000d, &snd_motu_spec_ultralite), |
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SND_MOTU_DEV_ENTRY(0x00000f, &snd_motu_spec_8pre), |
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SND_MOTU_DEV_ENTRY(0x000015, &snd_motu_spec_828mk3), // FireWire only. |
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SND_MOTU_DEV_ENTRY(0x000019, &snd_motu_spec_ultralite_mk3), // FireWire only. |
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SND_MOTU_DEV_ENTRY(0x000035, &snd_motu_spec_828mk3), // Hybrid. |
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SND_MOTU_DEV_ENTRY(0x000033, &snd_motu_spec_audio_express), |
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SND_MOTU_DEV_ENTRY(0x000045, &snd_motu_spec_4pre), |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(ieee1394, motu_id_table); |
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static struct fw_driver motu_driver = { |
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.driver = { |
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.owner = THIS_MODULE, |
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.name = KBUILD_MODNAME, |
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.bus = &fw_bus_type, |
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}, |
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.probe = motu_probe, |
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.update = motu_bus_update, |
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.remove = motu_remove, |
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.id_table = motu_id_table, |
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}; |
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static int __init alsa_motu_init(void) |
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{ |
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return driver_register(&motu_driver.driver); |
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} |
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static void __exit alsa_motu_exit(void) |
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{ |
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driver_unregister(&motu_driver.driver); |
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} |
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module_init(alsa_motu_init); |
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module_exit(alsa_motu_exit);
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