2 * tascam.c - a part of driver for TASCAM FireWire series
4 * Copyright (c) 2015 Takashi Sakamoto
6 * Licensed under the terms of the GNU General Public License, version 2.
11 MODULE_DESCRIPTION("TASCAM FireWire series Driver");
12 MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
13 MODULE_LICENSE("GPL v2");
15 static struct snd_tscm_spec model_specs[] = {
20 .pcm_capture_analog_channels = 8,
21 .pcm_playback_analog_channels = 8,
22 .midi_capture_ports = 4,
23 .midi_playback_ports = 4,
24 .is_controller = true,
30 .pcm_capture_analog_channels = 8,
31 .pcm_playback_analog_channels = 2,
32 .midi_capture_ports = 2,
33 .midi_playback_ports = 2,
34 .is_controller = true,
36 /* FW-1804 may be supported. */
39 static int identify_model(struct snd_tscm *tscm)
41 struct fw_device *fw_dev = fw_parent_device(tscm->unit);
42 const u32 *config_rom = fw_dev->config_rom;
47 if (fw_dev->config_rom_length < 30) {
48 dev_err(&tscm->unit->device,
49 "Configuration ROM is too short.\n");
53 /* Pick up model name from certain addresses. */
54 for (i = 0; i < 8; i++) {
55 c = config_rom[28 + i / 4] >> (24 - 8 * (i % 4));
62 for (i = 0; i < ARRAY_SIZE(model_specs); i++) {
63 if (strcmp(model, model_specs[i].name) == 0) {
64 tscm->spec = &model_specs[i];
68 if (tscm->spec == NULL)
71 strcpy(tscm->card->driver, "FW-TASCAM");
72 strcpy(tscm->card->shortname, model);
73 strcpy(tscm->card->mixername, model);
74 snprintf(tscm->card->longname, sizeof(tscm->card->longname),
75 "TASCAM %s, GUID %08x%08x at %s, S%d", model,
76 fw_dev->config_rom[3], fw_dev->config_rom[4],
77 dev_name(&tscm->unit->device), 100 << fw_dev->max_speed);
82 static void tscm_card_free(struct snd_card *card)
84 struct snd_tscm *tscm = card->private_data;
86 snd_tscm_transaction_unregister(tscm);
87 snd_tscm_stream_destroy_duplex(tscm);
89 fw_unit_put(tscm->unit);
91 mutex_destroy(&tscm->mutex);
94 static int snd_tscm_probe(struct fw_unit *unit,
95 const struct ieee1394_device_id *entry)
97 struct snd_card *card;
98 struct snd_tscm *tscm;
102 err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
103 sizeof(struct snd_tscm), &card);
106 card->private_free = tscm_card_free;
108 /* initialize myself */
109 tscm = card->private_data;
111 tscm->unit = fw_unit_get(unit);
113 mutex_init(&tscm->mutex);
114 spin_lock_init(&tscm->lock);
115 init_waitqueue_head(&tscm->hwdep_wait);
117 err = identify_model(tscm);
121 snd_tscm_proc_init(tscm);
123 err = snd_tscm_stream_init_duplex(tscm);
127 err = snd_tscm_create_pcm_devices(tscm);
131 err = snd_tscm_transaction_register(tscm);
135 err = snd_tscm_create_midi_devices(tscm);
139 err = snd_tscm_create_hwdep_device(tscm);
143 err = snd_card_register(card);
147 dev_set_drvdata(&unit->device, tscm);
155 static void snd_tscm_update(struct fw_unit *unit)
157 struct snd_tscm *tscm = dev_get_drvdata(&unit->device);
159 snd_tscm_transaction_reregister(tscm);
161 mutex_lock(&tscm->mutex);
162 snd_tscm_stream_update_duplex(tscm);
163 mutex_unlock(&tscm->mutex);
166 static void snd_tscm_remove(struct fw_unit *unit)
168 struct snd_tscm *tscm = dev_get_drvdata(&unit->device);
170 /* No need to wait for releasing card object in this context. */
171 snd_card_free_when_closed(tscm->card);
174 static const struct ieee1394_device_id snd_tscm_id_table[] = {
176 .match_flags = IEEE1394_MATCH_VENDOR_ID |
177 IEEE1394_MATCH_SPECIFIER_ID,
178 .vendor_id = 0x00022e,
179 .specifier_id = 0x00022e,
181 /* FE-08 requires reverse-engineering because it just has faders. */
184 MODULE_DEVICE_TABLE(ieee1394, snd_tscm_id_table);
186 static struct fw_driver tscm_driver = {
188 .owner = THIS_MODULE,
189 .name = "snd-firewire-tascam",
192 .probe = snd_tscm_probe,
193 .update = snd_tscm_update,
194 .remove = snd_tscm_remove,
195 .id_table = snd_tscm_id_table,
198 static int __init snd_tscm_init(void)
200 return driver_register(&tscm_driver.driver);
203 static void __exit snd_tscm_exit(void)
205 driver_unregister(&tscm_driver.driver);
208 module_init(snd_tscm_init);
209 module_exit(snd_tscm_exit);