summaryrefslogtreecommitdiffstats
path: root/sound/firewire/tascam/tascam.c
blob: ee2f498dcce494926ee14cfec8eda911f2bbd902 (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
/*
 * tascam.c - a part of driver for TASCAM FireWire series
 *
 * Copyright (c) 2015 Takashi Sakamoto
 *
 * Licensed under the terms of the GNU General Public License, version 2.
 */

#include "tascam.h"

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

static struct snd_tscm_spec model_specs[] = {
	{
		.name = "FW-1884",
		.has_adat = true,
		.has_spdif = true,
		.pcm_capture_analog_channels = 8,
		.pcm_playback_analog_channels = 8,
		.midi_capture_ports = 4,
		.midi_playback_ports = 4,
		.is_controller = true,
	},
	{
		.name = "FW-1804",
		.has_adat = true,
		.has_spdif = true,
		.pcm_capture_analog_channels = 8,
		.pcm_playback_analog_channels = 2,
		.midi_capture_ports = 2,
		.midi_playback_ports = 4,
		.is_controller = false,
	},
	{
		.name = "FW-1082",
		.has_adat = false,
		.has_spdif = true,
		.pcm_capture_analog_channels = 8,
		.pcm_playback_analog_channels = 2,
		.midi_capture_ports = 2,
		.midi_playback_ports = 2,
		.is_controller = true,
	},
};

static int check_name(struct snd_tscm *tscm)
{
	struct fw_device *fw_dev = fw_parent_device(tscm->unit);
	char vendor[8];
	char model[8];
	__u32 data;

	/* Retrieve model name. */
	data = be32_to_cpu(fw_dev->config_rom[28]);
	memcpy(model, &data, 4);
	data = be32_to_cpu(fw_dev->config_rom[29]);
	memcpy(model + 4, &data, 4);
	model[7] = '\0';

	/* Retrieve vendor name. */
	data = be32_to_cpu(fw_dev->config_rom[23]);
	memcpy(vendor, &data, 4);
	data = be32_to_cpu(fw_dev->config_rom[24]);
	memcpy(vendor + 4, &data, 4);
	vendor[7] = '\0';

	strcpy(tscm->card->driver, "FW-TASCAM");
	strcpy(tscm->card->shortname, model);
	strcpy(tscm->card->mixername, model);
	snprintf(tscm->card->longname, sizeof(tscm->card->longname),
		 "%s %s, GUID %08x%08x at %s, S%d", vendor, model,
		 cpu_to_be32(fw_dev->config_rom[3]),
		 cpu_to_be32(fw_dev->config_rom[4]),
		 dev_name(&tscm->unit->device), 100 << fw_dev->max_speed);

	return 0;
}

static void tscm_card_free(struct snd_card *card)
{
	struct snd_tscm *tscm = card->private_data;

	snd_tscm_stream_destroy_duplex(tscm);

	fw_unit_put(tscm->unit);

	mutex_destroy(&tscm->mutex);
}

static int snd_tscm_probe(struct fw_unit *unit,
			   const struct ieee1394_device_id *entry)
{
	struct snd_card *card;
	struct snd_tscm *tscm;
	int err;

	/* create card */
	err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
			   sizeof(struct snd_tscm), &card);
	if (err < 0)
		return err;
	card->private_free = tscm_card_free;

	/* initialize myself */
	tscm = card->private_data;
	tscm->card = card;
	tscm->unit = fw_unit_get(unit);
	tscm->spec = (const struct snd_tscm_spec *)entry->driver_data;

	mutex_init(&tscm->mutex);
	spin_lock_init(&tscm->lock);
	init_waitqueue_head(&tscm->hwdep_wait);

	err = check_name(tscm);
	if (err < 0)
		goto error;

	snd_tscm_proc_init(tscm);

	err = snd_tscm_stream_init_duplex(tscm);
	if (err < 0)
		goto error;

	err = snd_tscm_create_pcm_devices(tscm);
	if (err < 0)
		goto error;

	err = snd_tscm_create_hwdep_device(tscm);
	if (err < 0)
		goto error;

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

	dev_set_drvdata(&unit->device, tscm);

	return err;
error:
	snd_card_free(card);
	return err;
}

static void snd_tscm_update(struct fw_unit *unit)
{
	struct snd_tscm *tscm = dev_get_drvdata(&unit->device);

	mutex_lock(&tscm->mutex);
	snd_tscm_stream_update_duplex(tscm);
	mutex_unlock(&tscm->mutex);
}

static void snd_tscm_remove(struct fw_unit *unit)
{
	struct snd_tscm *tscm = dev_get_drvdata(&unit->device);

	/* No need to wait for releasing card object in this context. */
	snd_card_free_when_closed(tscm->card);
}

static const struct ieee1394_device_id snd_tscm_id_table[] = {
	/* FW-1082 */
	{
		.match_flags = IEEE1394_MATCH_VENDOR_ID |
			       IEEE1394_MATCH_SPECIFIER_ID |
			       IEEE1394_MATCH_VERSION,
		.vendor_id = 0x00022e,
		.specifier_id = 0x00022e,
		.version = 0x800003,
		.driver_data = (kernel_ulong_t)&model_specs[2],
	},
	/* FW-1884 */
	{
		.match_flags = IEEE1394_MATCH_VENDOR_ID |
			       IEEE1394_MATCH_SPECIFIER_ID |
			       IEEE1394_MATCH_VERSION,
		.vendor_id = 0x00022e,
		.specifier_id = 0x00022e,
		.version = 0x800000,
		.driver_data = (kernel_ulong_t)&model_specs[0],
	},
	/* FW-1804 mey be supported if IDs are clear. */
	/* FE-08 requires reverse-engineering because it just has faders. */
	{}
};
MODULE_DEVICE_TABLE(ieee1394, snd_tscm_id_table);

static struct fw_driver tscm_driver = {
	.driver = {
		.owner = THIS_MODULE,
		.name = "snd-firewire-tascam",
		.bus = &fw_bus_type,
	},
	.probe    = snd_tscm_probe,
	.update   = snd_tscm_update,
	.remove   = snd_tscm_remove,
	.id_table = snd_tscm_id_table,
};

static int __init snd_tscm_init(void)
{
	return driver_register(&tscm_driver.driver);
}

static void __exit snd_tscm_exit(void)
{
	driver_unregister(&tscm_driver.driver);
}

module_init(snd_tscm_init);
module_exit(snd_tscm_exit);