1 // SPDX-License-Identifier: GPL-2.0-only
3 * motu.c - a part of driver for MOTU FireWire series
5 * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
10 #define OUI_MOTU 0x0001f2
12 MODULE_DESCRIPTION("MOTU FireWire driver");
13 MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
14 MODULE_LICENSE("GPL v2");
16 const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT] = {
28 static void name_card(struct snd_motu *motu)
30 struct fw_device *fw_dev = fw_parent_device(motu->unit);
31 struct fw_csr_iterator it;
35 fw_csr_iterator_init(&it, motu->unit->directory);
36 while (fw_csr_iterator_next(&it, &key, &val)) {
44 strcpy(motu->card->driver, "FW-MOTU");
45 strcpy(motu->card->shortname, motu->spec->name);
46 strcpy(motu->card->mixername, motu->spec->name);
47 snprintf(motu->card->longname, sizeof(motu->card->longname),
48 "MOTU %s (version:%06x), GUID %08x%08x at %s, S%d",
49 motu->spec->name, version,
50 fw_dev->config_rom[3], fw_dev->config_rom[4],
51 dev_name(&motu->unit->device), 100 << fw_dev->max_speed);
54 static void motu_card_free(struct snd_card *card)
56 struct snd_motu *motu = card->private_data;
58 snd_motu_transaction_unregister(motu);
59 snd_motu_stream_destroy_duplex(motu);
61 mutex_destroy(&motu->mutex);
62 fw_unit_put(motu->unit);
65 static int motu_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry)
67 struct snd_card *card;
68 struct snd_motu *motu;
71 err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, sizeof(*motu), &card);
74 card->private_free = motu_card_free;
76 motu = card->private_data;
77 motu->unit = fw_unit_get(unit);
78 dev_set_drvdata(&unit->device, motu);
81 motu->spec = (const struct snd_motu_spec *)entry->driver_data;
82 mutex_init(&motu->mutex);
83 spin_lock_init(&motu->lock);
84 init_waitqueue_head(&motu->hwdep_wait);
88 err = snd_motu_transaction_register(motu);
92 err = snd_motu_stream_init_duplex(motu);
96 snd_motu_proc_init(motu);
98 err = snd_motu_create_pcm_devices(motu);
102 if ((motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_2ND_Q) ||
103 (motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_3RD_Q) ||
104 (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_2ND_Q) ||
105 (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_3RD_Q)) {
106 err = snd_motu_create_midi_devices(motu);
111 err = snd_motu_create_hwdep_device(motu);
115 err = snd_card_register(card);
125 static void motu_remove(struct fw_unit *unit)
127 struct snd_motu *motu = dev_get_drvdata(&unit->device);
129 // Block till all of ALSA character devices are released.
130 snd_card_free(motu->card);
133 static void motu_bus_update(struct fw_unit *unit)
135 struct snd_motu *motu = dev_get_drvdata(&unit->device);
137 /* The handler address register becomes initialized. */
138 snd_motu_transaction_reregister(motu);
141 #define SND_MOTU_DEV_ENTRY(model, data) \
143 .match_flags = IEEE1394_MATCH_VENDOR_ID | \
144 IEEE1394_MATCH_SPECIFIER_ID | \
145 IEEE1394_MATCH_VERSION, \
146 .vendor_id = OUI_MOTU, \
147 .specifier_id = OUI_MOTU, \
149 .driver_data = (kernel_ulong_t)data, \
152 static const struct ieee1394_device_id motu_id_table[] = {
153 SND_MOTU_DEV_ENTRY(0x000001, &snd_motu_spec_828),
154 SND_MOTU_DEV_ENTRY(0x000002, &snd_motu_spec_896),
155 SND_MOTU_DEV_ENTRY(0x000003, &snd_motu_spec_828mk2),
156 SND_MOTU_DEV_ENTRY(0x000009, &snd_motu_spec_traveler),
157 SND_MOTU_DEV_ENTRY(0x00000d, &snd_motu_spec_ultralite),
158 SND_MOTU_DEV_ENTRY(0x00000f, &snd_motu_spec_8pre),
159 SND_MOTU_DEV_ENTRY(0x000015, &snd_motu_spec_828mk3_fw), // FireWire only.
160 SND_MOTU_DEV_ENTRY(0x000019, &snd_motu_spec_ultralite_mk3), // FireWire only.
161 SND_MOTU_DEV_ENTRY(0x000030, &snd_motu_spec_ultralite_mk3), // Hybrid.
162 SND_MOTU_DEV_ENTRY(0x000035, &snd_motu_spec_828mk3_hybrid), // Hybrid.
163 SND_MOTU_DEV_ENTRY(0x000033, &snd_motu_spec_audio_express),
164 SND_MOTU_DEV_ENTRY(0x000045, &snd_motu_spec_4pre),
167 MODULE_DEVICE_TABLE(ieee1394, motu_id_table);
169 static struct fw_driver motu_driver = {
171 .owner = THIS_MODULE,
172 .name = KBUILD_MODNAME,
176 .update = motu_bus_update,
177 .remove = motu_remove,
178 .id_table = motu_id_table,
181 static int __init alsa_motu_init(void)
183 return driver_register(&motu_driver.driver);
186 static void __exit alsa_motu_exit(void)
188 driver_unregister(&motu_driver.driver);
191 module_init(alsa_motu_init);
192 module_exit(alsa_motu_exit);