1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * motu.c - a part of driver for MOTU FireWire series
4 *
5 * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
6 */
7
8 #include "motu.h"
9
10 #define OUI_MOTU 0x0001f2
11
12 MODULE_DESCRIPTION("MOTU FireWire driver");
13 MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
14 MODULE_LICENSE("GPL");
15
16 const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT] = {
17 /* mode 0 */
18 [0] = 44100,
19 [1] = 48000,
20 /* mode 1 */
21 [2] = 88200,
22 [3] = 96000,
23 /* mode 2 */
24 [4] = 176400,
25 [5] = 192000,
26 };
27
name_card(struct snd_motu * motu)28 static void name_card(struct snd_motu *motu)
29 {
30 struct fw_device *fw_dev = fw_parent_device(motu->unit);
31 struct fw_csr_iterator it;
32 int key, val;
33 u32 version = 0;
34
35 fw_csr_iterator_init(&it, motu->unit->directory);
36 while (fw_csr_iterator_next(&it, &key, &val)) {
37 switch (key) {
38 case CSR_MODEL:
39 version = val;
40 break;
41 }
42 }
43
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);
52 }
53
motu_card_free(struct snd_card * card)54 static void motu_card_free(struct snd_card *card)
55 {
56 struct snd_motu *motu = card->private_data;
57
58 snd_motu_transaction_unregister(motu);
59 snd_motu_stream_destroy_duplex(motu);
60
61 mutex_destroy(&motu->mutex);
62 fw_unit_put(motu->unit);
63 }
64
motu_probe(struct fw_unit * unit,const struct ieee1394_device_id * entry)65 static int motu_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry)
66 {
67 struct snd_card *card;
68 struct snd_motu *motu;
69 int err;
70
71 err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, sizeof(*motu), &card);
72 if (err < 0)
73 return err;
74 card->private_free = motu_card_free;
75
76 motu = card->private_data;
77 motu->unit = fw_unit_get(unit);
78 dev_set_drvdata(&unit->device, motu);
79 motu->card = card;
80
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);
85
86 name_card(motu);
87
88 err = snd_motu_transaction_register(motu);
89 if (err < 0)
90 goto error;
91
92 err = snd_motu_stream_init_duplex(motu);
93 if (err < 0)
94 goto error;
95
96 snd_motu_proc_init(motu);
97
98 err = snd_motu_create_pcm_devices(motu);
99 if (err < 0)
100 goto error;
101
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);
107 if (err < 0)
108 goto error;
109 }
110
111 err = snd_motu_create_hwdep_device(motu);
112 if (err < 0)
113 goto error;
114
115 if (motu->spec->flags & SND_MOTU_SPEC_REGISTER_DSP) {
116 err = snd_motu_register_dsp_message_parser_new(motu);
117 if (err < 0)
118 goto error;
119 } else if (motu->spec->flags & SND_MOTU_SPEC_COMMAND_DSP) {
120 err = snd_motu_command_dsp_message_parser_new(motu);
121 if (err < 0)
122 goto error;
123 }
124
125 err = snd_card_register(card);
126 if (err < 0)
127 goto error;
128
129 return 0;
130 error:
131 snd_card_free(card);
132 return err;
133 }
134
motu_remove(struct fw_unit * unit)135 static void motu_remove(struct fw_unit *unit)
136 {
137 struct snd_motu *motu = dev_get_drvdata(&unit->device);
138
139 // Block till all of ALSA character devices are released.
140 snd_card_free(motu->card);
141 }
142
motu_bus_update(struct fw_unit * unit)143 static void motu_bus_update(struct fw_unit *unit)
144 {
145 struct snd_motu *motu = dev_get_drvdata(&unit->device);
146
147 /* The handler address register becomes initialized. */
148 snd_motu_transaction_reregister(motu);
149 }
150
151 #define SND_MOTU_DEV_ENTRY(model, data) \
152 { \
153 .match_flags = IEEE1394_MATCH_VENDOR_ID | \
154 IEEE1394_MATCH_SPECIFIER_ID | \
155 IEEE1394_MATCH_VERSION, \
156 .vendor_id = OUI_MOTU, \
157 .specifier_id = OUI_MOTU, \
158 .version = model, \
159 .driver_data = (kernel_ulong_t)data, \
160 }
161
162 static const struct ieee1394_device_id motu_id_table[] = {
163 SND_MOTU_DEV_ENTRY(0x000001, &snd_motu_spec_828),
164 SND_MOTU_DEV_ENTRY(0x000002, &snd_motu_spec_896),
165 SND_MOTU_DEV_ENTRY(0x000003, &snd_motu_spec_828mk2),
166 SND_MOTU_DEV_ENTRY(0x000005, &snd_motu_spec_896hd),
167 SND_MOTU_DEV_ENTRY(0x000009, &snd_motu_spec_traveler),
168 SND_MOTU_DEV_ENTRY(0x00000d, &snd_motu_spec_ultralite),
169 SND_MOTU_DEV_ENTRY(0x00000f, &snd_motu_spec_8pre),
170 SND_MOTU_DEV_ENTRY(0x000015, &snd_motu_spec_828mk3_fw), // FireWire only.
171 SND_MOTU_DEV_ENTRY(0x000019, &snd_motu_spec_ultralite_mk3), // FireWire only.
172 SND_MOTU_DEV_ENTRY(0x00001b, &snd_motu_spec_traveler_mk3),
173 SND_MOTU_DEV_ENTRY(0x000030, &snd_motu_spec_ultralite_mk3), // Hybrid.
174 SND_MOTU_DEV_ENTRY(0x000035, &snd_motu_spec_828mk3_hybrid), // Hybrid.
175 SND_MOTU_DEV_ENTRY(0x000033, &snd_motu_spec_audio_express),
176 SND_MOTU_DEV_ENTRY(0x000039, &snd_motu_spec_track16),
177 SND_MOTU_DEV_ENTRY(0x000045, &snd_motu_spec_4pre),
178 { }
179 };
180 MODULE_DEVICE_TABLE(ieee1394, motu_id_table);
181
182 static struct fw_driver motu_driver = {
183 .driver = {
184 .owner = THIS_MODULE,
185 .name = KBUILD_MODNAME,
186 .bus = &fw_bus_type,
187 },
188 .probe = motu_probe,
189 .update = motu_bus_update,
190 .remove = motu_remove,
191 .id_table = motu_id_table,
192 };
193
alsa_motu_init(void)194 static int __init alsa_motu_init(void)
195 {
196 return driver_register(&motu_driver.driver);
197 }
198
alsa_motu_exit(void)199 static void __exit alsa_motu_exit(void)
200 {
201 driver_unregister(&motu_driver.driver);
202 }
203
204 module_init(alsa_motu_init);
205 module_exit(alsa_motu_exit);
206