summaryrefslogtreecommitdiffstats
path: root/sound/firewire/motu/motu.c
blob: 680e363d0a4b526e9d5fad8b8719bf7b6744adfd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
// SPDX-License-Identifier: GPL-2.0-only
/*
 * motu.c - a part of driver for MOTU FireWire series
 *
 * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
 */

#include "motu.h"

#define OUI_MOTU	0x0001f2

MODULE_DESCRIPTION("MOTU FireWire driver");
MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
MODULE_LICENSE("GPL v2");

const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT] = {
	/* mode 0 */
	[0] =  44100,
	[1] =  48000,
	/* mode 1 */
	[2] =  88200,
	[3] =  96000,
	/* mode 2 */
	[4] = 176400,
	[5] = 192000,
};

static void name_card(struct snd_motu *motu)
{
	struct fw_device *fw_dev = fw_parent_device(motu->unit);
	struct fw_csr_iterator it;
	int key, val;
	u32 version = 0;

	fw_csr_iterator_init(&it, motu->unit->directory);
	while (fw_csr_iterator_next(&it, &key, &val)) {
		switch (key) {
		case CSR_MODEL:
			version = val;
			break;
		}
	}

	strcpy(motu->card->driver, "FW-MOTU");
	strcpy(motu->card->shortname, motu->spec->name);
	strcpy(motu->card->mixername, motu->spec->name);
	snprintf(motu->card->longname, sizeof(motu->card->longname),
		 "MOTU %s (version:%06x), GUID %08x%08x at %s, S%d",
		 motu->spec->name, version,
		 fw_dev->config_rom[3], fw_dev->config_rom[4],
		 dev_name(&motu->unit->device), 100 << fw_dev->max_speed);
}

static void motu_card_free(struct snd_card *card)
{
	struct snd_motu *motu = card->private_data;

	snd_motu_transaction_unregister(motu);
	snd_motu_stream_destroy_duplex(motu);
}

static void do_registration(struct work_struct *work)
{
	struct snd_motu *motu = container_of(work, struct snd_motu, dwork.work);
	int err;

	if (motu->registered)
		return;

	err = snd_card_new(&motu->unit->device, -1, NULL, THIS_MODULE, 0,
			   &motu->card);
	if (err < 0)
		return;
	motu->card->private_free = motu_card_free;
	motu->card->private_data = motu;

	name_card(motu);

	err = snd_motu_transaction_register(motu);
	if (err < 0)
		goto error;

	err = snd_motu_stream_init_duplex(motu);
	if (err < 0)
		goto error;

	snd_motu_proc_init(motu);

	err = snd_motu_create_pcm_devices(motu);
	if (err < 0)
		goto error;

	if ((motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_2ND_Q) ||
	    (motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_3RD_Q) ||
	    (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_2ND_Q) ||
	    (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_3RD_Q)) {
		err = snd_motu_create_midi_devices(motu);
		if (err < 0)
			goto error;
	}

	err = snd_motu_create_hwdep_device(motu);
	if (err < 0)
		goto error;

	err = snd_card_register(motu->card);
	if (err < 0)
		goto error;

	motu->registered = true;

	return;
error:
	snd_card_free(motu->card);
	dev_info(&motu->unit->device,
		 "Sound card registration failed: %d\n", err);
}

static int motu_probe(struct fw_unit *unit,
		      const struct ieee1394_device_id *entry)
{
	struct snd_motu *motu;

	/* Allocate this independently of sound card instance. */
	motu = devm_kzalloc(&unit->device, sizeof(struct snd_motu), GFP_KERNEL);
	if (!motu)
		return -ENOMEM;
	motu->unit = fw_unit_get(unit);
	dev_set_drvdata(&unit->device, motu);

	motu->spec = (const struct snd_motu_spec *)entry->driver_data;
	mutex_init(&motu->mutex);
	spin_lock_init(&motu->lock);
	init_waitqueue_head(&motu->hwdep_wait);

	/* Allocate and register this sound card later. */
	INIT_DEFERRABLE_WORK(&motu->dwork, do_registration);
	snd_fw_schedule_registration(unit, &motu->dwork);

	return 0;
}

static void motu_remove(struct fw_unit *unit)
{
	struct snd_motu *motu = dev_get_drvdata(&unit->device);

	/*
	 * Confirm to stop the work for registration before the sound card is
	 * going to be released. The work is not scheduled again because bus
	 * reset handler is not called anymore.
	 */
	cancel_delayed_work_sync(&motu->dwork);

	if (motu->registered) {
		// Block till all of ALSA character devices are released.
		snd_card_free(motu->card);
	}

	mutex_destroy(&motu->mutex);
	fw_unit_put(motu->unit);
}

static void motu_bus_update(struct fw_unit *unit)
{
	struct snd_motu *motu = dev_get_drvdata(&unit->device);

	/* Postpone a workqueue for deferred registration. */
	if (!motu->registered)
		snd_fw_schedule_registration(unit, &motu->dwork);

	/* The handler address register becomes initialized. */
	snd_motu_transaction_reregister(motu);
}

static const struct snd_motu_spec motu_828mk2 = {
	.name = "828mk2",
	.protocol = &snd_motu_protocol_v2,
	.flags = SND_MOTU_SPEC_SUPPORT_CLOCK_X2 |
		 SND_MOTU_SPEC_TX_MICINST_CHUNK |
		 SND_MOTU_SPEC_TX_RETURN_CHUNK |
		 SND_MOTU_SPEC_RX_SEPARATED_MAIN |
		 SND_MOTU_SPEC_HAS_OPT_IFACE_A |
		 SND_MOTU_SPEC_RX_MIDI_2ND_Q |
		 SND_MOTU_SPEC_TX_MIDI_2ND_Q,

	.analog_in_ports = 8,
	.analog_out_ports = 8,
};

const struct snd_motu_spec snd_motu_spec_traveler = {
	.name = "Traveler",
	.protocol = &snd_motu_protocol_v2,
	.flags = SND_MOTU_SPEC_SUPPORT_CLOCK_X2 |
		 SND_MOTU_SPEC_SUPPORT_CLOCK_X4 |
		 SND_MOTU_SPEC_TX_RETURN_CHUNK |
		 SND_MOTU_SPEC_HAS_AESEBU_IFACE |
		 SND_MOTU_SPEC_HAS_OPT_IFACE_A |
		 SND_MOTU_SPEC_RX_MIDI_2ND_Q |
		 SND_MOTU_SPEC_TX_MIDI_2ND_Q,

	.analog_in_ports = 8,
	.analog_out_ports = 8,
};

const struct snd_motu_spec snd_motu_spec_8pre = {
	.name = "8pre",
	.protocol = &snd_motu_protocol_v2,
	// In tx, use coax chunks for mix-return 1/2. In rx, use coax chunks for
	// dummy 1/2.
	.flags = SND_MOTU_SPEC_SUPPORT_CLOCK_X2 |
		 SND_MOTU_SPEC_HAS_OPT_IFACE_A |
		 SND_MOTU_SPEC_HAS_OPT_IFACE_B |
		 SND_MOTU_SPEC_RX_MIDI_2ND_Q |
		 SND_MOTU_SPEC_TX_MIDI_2ND_Q,
	.analog_in_ports = 8,
	.analog_out_ports = 2,
};

static const struct snd_motu_spec motu_828mk3 = {
	.name = "828mk3",
	.protocol = &snd_motu_protocol_v3,
	.flags = SND_MOTU_SPEC_SUPPORT_CLOCK_X2 |
		 SND_MOTU_SPEC_SUPPORT_CLOCK_X4 |
		 SND_MOTU_SPEC_TX_MICINST_CHUNK |
		 SND_MOTU_SPEC_TX_RETURN_CHUNK |
		 SND_MOTU_SPEC_TX_REVERB_CHUNK |
		 SND_MOTU_SPEC_RX_SEPARATED_MAIN |
		 SND_MOTU_SPEC_HAS_OPT_IFACE_A |
		 SND_MOTU_SPEC_HAS_OPT_IFACE_B |
		 SND_MOTU_SPEC_RX_MIDI_3RD_Q |
		 SND_MOTU_SPEC_TX_MIDI_3RD_Q,

	.analog_in_ports = 8,
	.analog_out_ports = 8,
};

static const struct snd_motu_spec motu_audio_express = {
	.name = "AudioExpress",
	.protocol = &snd_motu_protocol_v3,
	.flags = SND_MOTU_SPEC_SUPPORT_CLOCK_X2 |
		 SND_MOTU_SPEC_TX_MICINST_CHUNK |
		 SND_MOTU_SPEC_TX_RETURN_CHUNK |
		 SND_MOTU_SPEC_RX_SEPARATED_MAIN |
		 SND_MOTU_SPEC_RX_MIDI_2ND_Q |
		 SND_MOTU_SPEC_TX_MIDI_3RD_Q,
	.analog_in_ports = 2,
	.analog_out_ports = 4,
};

static const struct snd_motu_spec motu_4pre = {
	.name = "4pre",
	.protocol = &snd_motu_protocol_v3,
	.flags = SND_MOTU_SPEC_SUPPORT_CLOCK_X2 |
		 SND_MOTU_SPEC_TX_MICINST_CHUNK |
		 SND_MOTU_SPEC_TX_RETURN_CHUNK |
		 SND_MOTU_SPEC_RX_SEPARATED_MAIN,
	.analog_in_ports = 2,
	.analog_out_ports = 2,
};

#define SND_MOTU_DEV_ENTRY(model, data)			\
{							\
	.match_flags	= IEEE1394_MATCH_VENDOR_ID |	\
			  IEEE1394_MATCH_SPECIFIER_ID |	\
			  IEEE1394_MATCH_VERSION,	\
	.vendor_id	= OUI_MOTU,			\
	.specifier_id	= OUI_MOTU,			\
	.version	= model,			\
	.driver_data	= (kernel_ulong_t)data,		\
}

static const struct ieee1394_device_id motu_id_table[] = {
	SND_MOTU_DEV_ENTRY(0x000003, &motu_828mk2),
	SND_MOTU_DEV_ENTRY(0x000009, &snd_motu_spec_traveler),
	SND_MOTU_DEV_ENTRY(0x00000f, &snd_motu_spec_8pre),
	SND_MOTU_DEV_ENTRY(0x000015, &motu_828mk3),	/* FireWire only. */
	SND_MOTU_DEV_ENTRY(0x000035, &motu_828mk3),	/* Hybrid. */
	SND_MOTU_DEV_ENTRY(0x000033, &motu_audio_express),
	SND_MOTU_DEV_ENTRY(0x000045, &motu_4pre),
	{ }
};
MODULE_DEVICE_TABLE(ieee1394, motu_id_table);

static struct fw_driver motu_driver = {
	.driver   = {
		.owner	= THIS_MODULE,
		.name	= KBUILD_MODNAME,
		.bus	= &fw_bus_type,
	},
	.probe    = motu_probe,
	.update   = motu_bus_update,
	.remove   = motu_remove,
	.id_table = motu_id_table,
};

static int __init alsa_motu_init(void)
{
	return driver_register(&motu_driver.driver);
}

static void __exit alsa_motu_exit(void)
{
	driver_unregister(&motu_driver.driver);
}

module_init(alsa_motu_init);
module_exit(alsa_motu_exit);