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8#include "dice.h"
9
10MODULE_DESCRIPTION("DICE driver");
11MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
12MODULE_LICENSE("GPL v2");
13
14#define OUI_WEISS 0x001c6a
15#define OUI_LOUD 0x000ff2
16#define OUI_FOCUSRITE 0x00130e
17#define OUI_TCELECTRONIC 0x001486
18
19#define DICE_CATEGORY_ID 0x04
20#define WEISS_CATEGORY_ID 0x00
21#define LOUD_CATEGORY_ID 0x10
22
23
24
25
26
27static bool force_two_pcm_support(struct fw_unit *unit)
28{
29 static const char *const models[] = {
30
31 "StudioKonnekt48",
32
33 "SAFFIRE_PRO_40",
34 "LIQUID_SAFFIRE_56",
35 "SAFFIRE_PRO_40_1",
36 };
37 char model[32];
38 unsigned int i;
39 int err;
40
41 err = fw_csr_string(unit->directory, CSR_MODEL, model, sizeof(model));
42 if (err < 0)
43 return false;
44
45 for (i = 0; i < ARRAY_SIZE(models); i++) {
46 if (strcmp(models[i], model) == 0)
47 break;
48 }
49
50 return i < ARRAY_SIZE(models);
51}
52
53static int check_dice_category(struct fw_unit *unit)
54{
55 struct fw_device *device = fw_parent_device(unit);
56 struct fw_csr_iterator it;
57 int key, val, vendor = -1, model = -1;
58 unsigned int category;
59
60
61
62
63
64
65
66 fw_csr_iterator_init(&it, unit->directory);
67 while (fw_csr_iterator_next(&it, &key, &val)) {
68 switch (key) {
69 case CSR_SPECIFIER_ID:
70 vendor = val;
71 break;
72 case CSR_MODEL:
73 model = val;
74 break;
75 }
76 }
77
78 if (vendor == OUI_FOCUSRITE || vendor == OUI_TCELECTRONIC) {
79 if (force_two_pcm_support(unit))
80 return 0;
81 }
82
83 if (vendor == OUI_WEISS)
84 category = WEISS_CATEGORY_ID;
85 else if (vendor == OUI_LOUD)
86 category = LOUD_CATEGORY_ID;
87 else
88 category = DICE_CATEGORY_ID;
89 if (device->config_rom[3] != ((vendor << 8) | category) ||
90 device->config_rom[4] >> 22 != model)
91 return -ENODEV;
92
93 return 0;
94}
95
96static int check_clock_caps(struct snd_dice *dice)
97{
98 __be32 value;
99 int err;
100
101
102 if (dice->clock_caps > 0) {
103 err = snd_dice_transaction_read_global(dice,
104 GLOBAL_CLOCK_CAPABILITIES,
105 &value, 4);
106 if (err < 0)
107 return err;
108 dice->clock_caps = be32_to_cpu(value);
109 } else {
110
111 dice->clock_caps = CLOCK_CAP_RATE_44100 |
112 CLOCK_CAP_RATE_48000 |
113 CLOCK_CAP_SOURCE_ARX1 |
114 CLOCK_CAP_SOURCE_INTERNAL;
115 }
116
117 return 0;
118}
119
120static void dice_card_strings(struct snd_dice *dice)
121{
122 struct snd_card *card = dice->card;
123 struct fw_device *dev = fw_parent_device(dice->unit);
124 char vendor[32], model[32];
125 unsigned int i;
126 int err;
127
128 strcpy(card->driver, "DICE");
129
130 strcpy(card->shortname, "DICE");
131 BUILD_BUG_ON(NICK_NAME_SIZE < sizeof(card->shortname));
132 err = snd_dice_transaction_read_global(dice, GLOBAL_NICK_NAME,
133 card->shortname,
134 sizeof(card->shortname));
135 if (err >= 0) {
136
137 BUILD_BUG_ON(sizeof(card->shortname) % 4 != 0);
138 for (i = 0; i < sizeof(card->shortname); i += 4)
139 swab32s((u32 *)&card->shortname[i]);
140 card->shortname[sizeof(card->shortname) - 1] = '\0';
141 }
142
143 strcpy(vendor, "?");
144 fw_csr_string(dev->config_rom + 5, CSR_VENDOR, vendor, sizeof(vendor));
145 strcpy(model, "?");
146 fw_csr_string(dice->unit->directory, CSR_MODEL, model, sizeof(model));
147 snprintf(card->longname, sizeof(card->longname),
148 "%s %s (serial %u) at %s, S%d",
149 vendor, model, dev->config_rom[4] & 0x3fffff,
150 dev_name(&dice->unit->device), 100 << dev->max_speed);
151
152 strcpy(card->mixername, "DICE");
153}
154
155static void dice_free(struct snd_dice *dice)
156{
157 snd_dice_stream_destroy_duplex(dice);
158 snd_dice_transaction_destroy(dice);
159 fw_unit_put(dice->unit);
160
161 mutex_destroy(&dice->mutex);
162 kfree(dice);
163}
164
165
166
167
168
169
170
171static void dice_card_free(struct snd_card *card)
172{
173 dice_free(card->private_data);
174}
175
176static void do_registration(struct work_struct *work)
177{
178 struct snd_dice *dice = container_of(work, struct snd_dice, dwork.work);
179 int err;
180
181 if (dice->registered)
182 return;
183
184 err = snd_card_new(&dice->unit->device, -1, NULL, THIS_MODULE, 0,
185 &dice->card);
186 if (err < 0)
187 return;
188
189 if (force_two_pcm_support(dice->unit))
190 dice->force_two_pcms = true;
191
192 err = snd_dice_transaction_init(dice);
193 if (err < 0)
194 goto error;
195
196 err = check_clock_caps(dice);
197 if (err < 0)
198 goto error;
199
200 dice_card_strings(dice);
201
202 err = snd_dice_stream_init_duplex(dice);
203 if (err < 0)
204 goto error;
205
206 snd_dice_create_proc(dice);
207
208 err = snd_dice_create_pcm(dice);
209 if (err < 0)
210 goto error;
211
212 err = snd_dice_create_midi(dice);
213 if (err < 0)
214 goto error;
215
216 err = snd_dice_create_hwdep(dice);
217 if (err < 0)
218 goto error;
219
220 err = snd_card_register(dice->card);
221 if (err < 0)
222 goto error;
223
224
225
226
227
228 dice->card->private_free = dice_card_free;
229 dice->card->private_data = dice;
230 dice->registered = true;
231
232 return;
233error:
234 snd_dice_stream_destroy_duplex(dice);
235 snd_dice_transaction_destroy(dice);
236 snd_dice_stream_destroy_duplex(dice);
237 snd_card_free(dice->card);
238 dev_info(&dice->unit->device,
239 "Sound card registration failed: %d\n", err);
240}
241
242static int dice_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
243{
244 struct snd_dice *dice;
245 int err;
246
247 err = check_dice_category(unit);
248 if (err < 0)
249 return -ENODEV;
250
251
252 dice = kzalloc(sizeof(struct snd_dice), GFP_KERNEL);
253 if (dice == NULL)
254 return -ENOMEM;
255
256 dice->unit = fw_unit_get(unit);
257 dev_set_drvdata(&unit->device, dice);
258
259 spin_lock_init(&dice->lock);
260 mutex_init(&dice->mutex);
261 init_completion(&dice->clock_accepted);
262 init_waitqueue_head(&dice->hwdep_wait);
263
264
265 INIT_DEFERRABLE_WORK(&dice->dwork, do_registration);
266 snd_fw_schedule_registration(unit, &dice->dwork);
267
268 return 0;
269}
270
271static void dice_remove(struct fw_unit *unit)
272{
273 struct snd_dice *dice = dev_get_drvdata(&unit->device);
274
275
276
277
278
279
280 cancel_delayed_work_sync(&dice->dwork);
281
282 if (dice->registered) {
283
284 snd_card_free_when_closed(dice->card);
285 } else {
286
287 dice_free(dice);
288 }
289}
290
291static void dice_bus_reset(struct fw_unit *unit)
292{
293 struct snd_dice *dice = dev_get_drvdata(&unit->device);
294
295
296 if (!dice->registered)
297 snd_fw_schedule_registration(unit, &dice->dwork);
298
299
300 snd_dice_transaction_reinit(dice);
301
302
303
304
305
306 if (dice->registered) {
307 mutex_lock(&dice->mutex);
308 snd_dice_stream_update_duplex(dice);
309 mutex_unlock(&dice->mutex);
310 }
311}
312
313#define DICE_INTERFACE 0x000001
314
315static const struct ieee1394_device_id dice_id_table[] = {
316 {
317 .match_flags = IEEE1394_MATCH_VERSION,
318 .version = DICE_INTERFACE,
319 },
320
321 {
322 .match_flags = IEEE1394_MATCH_VENDOR_ID |
323 IEEE1394_MATCH_SPECIFIER_ID,
324 .vendor_id = 0x000d6c,
325 .specifier_id = 0x000d6c,
326 },
327 { }
328};
329MODULE_DEVICE_TABLE(ieee1394, dice_id_table);
330
331static struct fw_driver dice_driver = {
332 .driver = {
333 .owner = THIS_MODULE,
334 .name = KBUILD_MODNAME,
335 .bus = &fw_bus_type,
336 },
337 .probe = dice_probe,
338 .update = dice_bus_reset,
339 .remove = dice_remove,
340 .id_table = dice_id_table,
341};
342
343static int __init alsa_dice_init(void)
344{
345 return driver_register(&dice_driver.driver);
346}
347
348static void __exit alsa_dice_exit(void)
349{
350 driver_unregister(&dice_driver.driver);
351}
352
353module_init(alsa_dice_init);
354module_exit(alsa_dice_exit);
355