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
12MODULE_DESCRIPTION("MOTU FireWire driver");
13MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
14MODULE_LICENSE("GPL");
15
16const 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
28static 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(ci: &it, p: motu->unit->directory);
36 while (fw_csr_iterator_next(ci: &it, key: &key, value: &val)) {
37 switch (key) {
38 case CSR_MODEL:
39 version = val;
40 break;
41 }
42 }
43
44 strcpy(p: motu->card->driver, q: "FW-MOTU");
45 strcpy(p: motu->card->shortname, q: motu->spec->name);
46 strcpy(p: motu->card->mixername, q: motu->spec->name);
47 snprintf(buf: motu->card->longname, size: sizeof(motu->card->longname),
48 fmt: "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(dev: &motu->unit->device), 100 << fw_dev->max_speed);
52}
53
54static 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(lock: &motu->mutex);
62 fw_unit_put(unit: motu->unit);
63}
64
65static 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(parent: &unit->device, idx: -1, NULL, THIS_MODULE, extra_size: sizeof(*motu), card_ret: &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(dev: &unit->device, data: 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;
130error:
131 snd_card_free(card);
132 return err;
133}
134
135static void motu_remove(struct fw_unit *unit)
136{
137 struct snd_motu *motu = dev_get_drvdata(dev: &unit->device);
138
139 // Block till all of ALSA character devices are released.
140 snd_card_free(card: motu->card);
141}
142
143static void motu_bus_update(struct fw_unit *unit)
144{
145 struct snd_motu *motu = dev_get_drvdata(dev: &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
162static 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(0x000017, &snd_motu_spec_896mk3), // FireWire only.
172 SND_MOTU_DEV_ENTRY(0x000019, &snd_motu_spec_ultralite_mk3), // FireWire only.
173 SND_MOTU_DEV_ENTRY(0x00001b, &snd_motu_spec_traveler_mk3),
174 SND_MOTU_DEV_ENTRY(0x000030, &snd_motu_spec_ultralite_mk3), // Hybrid.
175 SND_MOTU_DEV_ENTRY(0x000035, &snd_motu_spec_828mk3_hybrid), // Hybrid.
176 SND_MOTU_DEV_ENTRY(0x000037, &snd_motu_spec_896mk3), // Hybrid.
177 SND_MOTU_DEV_ENTRY(0x000033, &snd_motu_spec_audio_express),
178 SND_MOTU_DEV_ENTRY(0x000039, &snd_motu_spec_track16),
179 SND_MOTU_DEV_ENTRY(0x000045, &snd_motu_spec_4pre),
180 { }
181};
182MODULE_DEVICE_TABLE(ieee1394, motu_id_table);
183
184static struct fw_driver motu_driver = {
185 .driver = {
186 .owner = THIS_MODULE,
187 .name = KBUILD_MODNAME,
188 .bus = &fw_bus_type,
189 },
190 .probe = motu_probe,
191 .update = motu_bus_update,
192 .remove = motu_remove,
193 .id_table = motu_id_table,
194};
195
196static int __init alsa_motu_init(void)
197{
198 return driver_register(drv: &motu_driver.driver);
199}
200
201static void __exit alsa_motu_exit(void)
202{
203 driver_unregister(drv: &motu_driver.driver);
204}
205
206module_init(alsa_motu_init);
207module_exit(alsa_motu_exit);
208

source code of linux/sound/firewire/motu/motu.c