This source file includes following definitions.
- identify_model
- tscm_card_free
- do_registration
- snd_tscm_probe
- snd_tscm_update
- snd_tscm_remove
- snd_tscm_init
- snd_tscm_exit
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8 #include "tascam.h"
9
10 MODULE_DESCRIPTION("TASCAM FireWire series Driver");
11 MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
12 MODULE_LICENSE("GPL v2");
13
14 static const struct snd_tscm_spec model_specs[] = {
15 {
16 .name = "FW-1884",
17 .has_adat = true,
18 .has_spdif = true,
19 .pcm_capture_analog_channels = 8,
20 .pcm_playback_analog_channels = 8,
21 .midi_capture_ports = 4,
22 .midi_playback_ports = 4,
23 },
24 {
25 .name = "FW-1082",
26 .has_adat = false,
27 .has_spdif = true,
28 .pcm_capture_analog_channels = 8,
29 .pcm_playback_analog_channels = 2,
30 .midi_capture_ports = 2,
31 .midi_playback_ports = 2,
32 },
33 {
34 .name = "FW-1804",
35 .has_adat = true,
36 .has_spdif = true,
37 .pcm_capture_analog_channels = 8,
38 .pcm_playback_analog_channels = 2,
39 .midi_capture_ports = 2,
40 .midi_playback_ports = 4,
41 },
42
43
44
45 };
46
47 static int identify_model(struct snd_tscm *tscm)
48 {
49 struct fw_device *fw_dev = fw_parent_device(tscm->unit);
50 const u32 *config_rom = fw_dev->config_rom;
51 char model[9];
52 unsigned int i;
53 u8 c;
54
55 if (fw_dev->config_rom_length < 30) {
56 dev_err(&tscm->unit->device,
57 "Configuration ROM is too short.\n");
58 return -ENODEV;
59 }
60
61
62 for (i = 0; i < 8; i++) {
63 c = config_rom[28 + i / 4] >> (24 - 8 * (i % 4));
64 if (c == '\0')
65 break;
66 model[i] = c;
67 }
68 model[i] = '\0';
69
70 for (i = 0; i < ARRAY_SIZE(model_specs); i++) {
71 if (strcmp(model, model_specs[i].name) == 0) {
72 tscm->spec = &model_specs[i];
73 break;
74 }
75 }
76 if (tscm->spec == NULL)
77 return -ENODEV;
78
79 strcpy(tscm->card->driver, "FW-TASCAM");
80 strcpy(tscm->card->shortname, model);
81 strcpy(tscm->card->mixername, model);
82 snprintf(tscm->card->longname, sizeof(tscm->card->longname),
83 "TASCAM %s, GUID %08x%08x at %s, S%d", model,
84 fw_dev->config_rom[3], fw_dev->config_rom[4],
85 dev_name(&tscm->unit->device), 100 << fw_dev->max_speed);
86
87 return 0;
88 }
89
90 static void tscm_card_free(struct snd_card *card)
91 {
92 struct snd_tscm *tscm = card->private_data;
93
94 snd_tscm_transaction_unregister(tscm);
95 snd_tscm_stream_destroy_duplex(tscm);
96 }
97
98 static void do_registration(struct work_struct *work)
99 {
100 struct snd_tscm *tscm = container_of(work, struct snd_tscm, dwork.work);
101 int err;
102
103 err = snd_card_new(&tscm->unit->device, -1, NULL, THIS_MODULE, 0,
104 &tscm->card);
105 if (err < 0)
106 return;
107 tscm->card->private_free = tscm_card_free;
108 tscm->card->private_data = tscm;
109
110 err = identify_model(tscm);
111 if (err < 0)
112 goto error;
113
114 err = snd_tscm_transaction_register(tscm);
115 if (err < 0)
116 goto error;
117
118 err = snd_tscm_stream_init_duplex(tscm);
119 if (err < 0)
120 goto error;
121
122 snd_tscm_proc_init(tscm);
123
124 err = snd_tscm_create_pcm_devices(tscm);
125 if (err < 0)
126 goto error;
127
128 err = snd_tscm_create_midi_devices(tscm);
129 if (err < 0)
130 goto error;
131
132 err = snd_tscm_create_hwdep_device(tscm);
133 if (err < 0)
134 goto error;
135
136 err = snd_card_register(tscm->card);
137 if (err < 0)
138 goto error;
139
140 tscm->registered = true;
141
142 return;
143 error:
144 snd_card_free(tscm->card);
145 dev_info(&tscm->unit->device,
146 "Sound card registration failed: %d\n", err);
147 }
148
149 static int snd_tscm_probe(struct fw_unit *unit,
150 const struct ieee1394_device_id *entry)
151 {
152 struct snd_tscm *tscm;
153
154
155 tscm = devm_kzalloc(&unit->device, sizeof(struct snd_tscm), GFP_KERNEL);
156 if (!tscm)
157 return -ENOMEM;
158 tscm->unit = fw_unit_get(unit);
159 dev_set_drvdata(&unit->device, tscm);
160
161 mutex_init(&tscm->mutex);
162 spin_lock_init(&tscm->lock);
163 init_waitqueue_head(&tscm->hwdep_wait);
164
165
166 INIT_DEFERRABLE_WORK(&tscm->dwork, do_registration);
167 snd_fw_schedule_registration(unit, &tscm->dwork);
168
169 return 0;
170 }
171
172 static void snd_tscm_update(struct fw_unit *unit)
173 {
174 struct snd_tscm *tscm = dev_get_drvdata(&unit->device);
175
176
177 if (!tscm->registered)
178 snd_fw_schedule_registration(unit, &tscm->dwork);
179
180 snd_tscm_transaction_reregister(tscm);
181
182
183
184
185
186 if (tscm->registered) {
187 mutex_lock(&tscm->mutex);
188 snd_tscm_stream_update_duplex(tscm);
189 mutex_unlock(&tscm->mutex);
190 }
191 }
192
193 static void snd_tscm_remove(struct fw_unit *unit)
194 {
195 struct snd_tscm *tscm = dev_get_drvdata(&unit->device);
196
197
198
199
200
201
202 cancel_delayed_work_sync(&tscm->dwork);
203
204 if (tscm->registered) {
205
206 snd_card_free(tscm->card);
207 }
208
209 mutex_destroy(&tscm->mutex);
210 fw_unit_put(tscm->unit);
211 }
212
213 static const struct ieee1394_device_id snd_tscm_id_table[] = {
214 {
215 .match_flags = IEEE1394_MATCH_VENDOR_ID |
216 IEEE1394_MATCH_SPECIFIER_ID,
217 .vendor_id = 0x00022e,
218 .specifier_id = 0x00022e,
219 },
220 {}
221 };
222 MODULE_DEVICE_TABLE(ieee1394, snd_tscm_id_table);
223
224 static struct fw_driver tscm_driver = {
225 .driver = {
226 .owner = THIS_MODULE,
227 .name = "snd-firewire-tascam",
228 .bus = &fw_bus_type,
229 },
230 .probe = snd_tscm_probe,
231 .update = snd_tscm_update,
232 .remove = snd_tscm_remove,
233 .id_table = snd_tscm_id_table,
234 };
235
236 static int __init snd_tscm_init(void)
237 {
238 return driver_register(&tscm_driver.driver);
239 }
240
241 static void __exit snd_tscm_exit(void)
242 {
243 driver_unregister(&tscm_driver.driver);
244 }
245
246 module_init(snd_tscm_init);
247 module_exit(snd_tscm_exit);