1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * usbusx2y.c - ALSA USB US-428 Driver
4 *
5 2005-04-14 Karsten Wiese
6 Version 0.8.7.2:
7 Call snd_card_free() instead of snd_card_free_in_thread() to prevent oops with dead keyboard symptom.
8 Tested ok with kernel 2.6.12-rc2.
9
10 2004-12-14 Karsten Wiese
11 Version 0.8.7.1:
12 snd_pcm_open for rawusb pcm-devices now returns -EBUSY if called without rawusb's hwdep device being open.
13
14 2004-12-02 Karsten Wiese
15 Version 0.8.7:
16 Use macro usb_maxpacket() for portability.
17
18 2004-10-26 Karsten Wiese
19 Version 0.8.6:
20 wake_up() process waiting in usx2y_urbs_start() on error.
21
22 2004-10-21 Karsten Wiese
23 Version 0.8.5:
24 nrpacks is runtime or compiletime configurable now with tested values from 1 to 4.
25
26 2004-10-03 Karsten Wiese
27 Version 0.8.2:
28 Avoid any possible racing while in prepare callback.
29
30 2004-09-30 Karsten Wiese
31 Version 0.8.0:
32 Simplified things and made ohci work again.
33
34 2004-09-20 Karsten Wiese
35 Version 0.7.3:
36 Use usb_kill_urb() instead of deprecated (kernel 2.6.9) usb_unlink_urb().
37
38 2004-07-13 Karsten Wiese
39 Version 0.7.1:
40 Don't sleep in START/STOP callbacks anymore.
41 us428 channels C/D not handled just for this version, sorry.
42
43 2004-06-21 Karsten Wiese
44 Version 0.6.4:
45 Temporarely suspend midi input
46 to sanely call usb_set_interface() when setting format.
47
48 2004-06-12 Karsten Wiese
49 Version 0.6.3:
50 Made it thus the following rule is enforced:
51 "All pcm substreams of one usx2y have to operate at the same rate & format."
52
53 2004-04-06 Karsten Wiese
54 Version 0.6.0:
55 Runs on 2.6.5 kernel without any "--with-debug=" things.
56 us224 reported running.
57
58 2004-01-14 Karsten Wiese
59 Version 0.5.1:
60 Runs with 2.6.1 kernel.
61
62 2003-12-30 Karsten Wiese
63 Version 0.4.1:
64 Fix 24Bit 4Channel capturing for the us428.
65
66 2003-11-27 Karsten Wiese, Martin Langer
67 Version 0.4:
68 us122 support.
69 us224 could be tested by uncommenting the sections containing USB_ID_US224
70
71 2003-11-03 Karsten Wiese
72 Version 0.3:
73 24Bit support.
74 "arecord -D hw:1 -c 2 -r 48000 -M -f S24_3LE|aplay -D hw:1 -c 2 -r 48000 -M -f S24_3LE" works.
75
76 2003-08-22 Karsten Wiese
77 Version 0.0.8:
78 Removed EZUSB Firmware. First Stage Firmwaredownload is now done by tascam-firmware downloader.
79 See:
80 http://usb-midi-fw.sourceforge.net/tascam-firmware.tar.gz
81
82 2003-06-18 Karsten Wiese
83 Version 0.0.5:
84 changed to compile with kernel 2.4.21 and alsa 0.9.4
85
86 2002-10-16 Karsten Wiese
87 Version 0.0.4:
88 compiles again with alsa-current.
89 USB_ISO_ASAP not used anymore (most of the time), instead
90 urb->start_frame is calculated here now, some calls inside usb-driver don't need to happen anymore.
91
92 To get the best out of this:
93 Disable APM-support in the kernel as APM-BIOS calls (once each second) hard disable interrupt for many precious milliseconds.
94 This helped me much on my slowish PII 400 & PIII 500.
95 ACPI yet untested but might cause the same bad behaviour.
96 Use a kernel with lowlatency and preemptiv patches applied.
97 To autoload snd-usb-midi append a line
98 post-install snd-usb-us428 modprobe snd-usb-midi
99 to /etc/modules.conf.
100
101 known problems:
102 sliders, knobs, lights not yet handled except MASTER Volume slider.
103 "pcm -c 2" doesn't work. "pcm -c 2 -m direct_interleaved" does.
104 KDE3: "Enable full duplex operation" deadlocks.
105
106 2002-08-31 Karsten Wiese
107 Version 0.0.3: audio also simplex;
108 simplifying: iso urbs only 1 packet, melted structs.
109 ASYNC_UNLINK not used anymore: no more crashes so far.....
110 for alsa 0.9 rc3.
111
112 2002-08-09 Karsten Wiese
113 Version 0.0.2: midi works with snd-usb-midi, audio (only fullduplex now) with i.e. bristol.
114 The firmware has been sniffed from win2k us-428 driver 3.09.
115
116 * Copyright (c) 2002 - 2004 Karsten Wiese
117 */
118
119 #include <linux/init.h>
120 #include <linux/module.h>
121 #include <linux/moduleparam.h>
122 #include <linux/slab.h>
123 #include <linux/interrupt.h>
124 #include <linux/usb.h>
125 #include <sound/core.h>
126 #include <sound/initval.h>
127 #include <sound/pcm.h>
128
129 #include <sound/rawmidi.h>
130 #include "usx2y.h"
131 #include "usbusx2y.h"
132 #include "usX2Yhwdep.h"
133
134 MODULE_AUTHOR("Karsten Wiese <annabellesgarden@yahoo.de>");
135 MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.8.7.2");
136 MODULE_LICENSE("GPL");
137
138 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
139 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
140 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
141
142 module_param_array(index, int, NULL, 0444);
143 MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
144 module_param_array(id, charp, NULL, 0444);
145 MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
146 module_param_array(enable, bool, NULL, 0444);
147 MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
148
149 static int snd_usx2y_card_used[SNDRV_CARDS];
150
151 static void snd_usx2y_card_private_free(struct snd_card *card);
152 static void usx2y_unlinkseq(struct snd_usx2y_async_seq *s);
153
154 /*
155 * pipe 4 is used for switching the lamps, setting samplerate, volumes ....
156 */
i_usx2y_out04_int(struct urb * urb)157 static void i_usx2y_out04_int(struct urb *urb)
158 {
159 #ifdef CONFIG_SND_DEBUG
160 if (urb->status) {
161 int i;
162 struct usx2ydev *usx2y = urb->context;
163
164 for (i = 0; i < 10 && usx2y->as04.urb[i] != urb; i++)
165 ;
166 snd_printdd("%s urb %i status=%i\n", __func__, i, urb->status);
167 }
168 #endif
169 }
170
i_usx2y_in04_int(struct urb * urb)171 static void i_usx2y_in04_int(struct urb *urb)
172 {
173 int err = 0;
174 struct usx2ydev *usx2y = urb->context;
175 struct us428ctls_sharedmem *us428ctls = usx2y->us428ctls_sharedmem;
176 struct us428_p4out *p4out;
177 int i, j, n, diff, send;
178
179 usx2y->in04_int_calls++;
180
181 if (urb->status) {
182 snd_printdd("Interrupt Pipe 4 came back with status=%i\n", urb->status);
183 return;
184 }
185
186 // printk("%i:0x%02X ", 8, (int)((unsigned char*)usx2y->in04_buf)[8]); Master volume shows 0 here if fader is at max during boot ?!?
187 if (us428ctls) {
188 diff = -1;
189 if (us428ctls->ctl_snapshot_last == -2) {
190 diff = 0;
191 memcpy(usx2y->in04_last, usx2y->in04_buf, sizeof(usx2y->in04_last));
192 us428ctls->ctl_snapshot_last = -1;
193 } else {
194 for (i = 0; i < 21; i++) {
195 if (usx2y->in04_last[i] != ((char *)usx2y->in04_buf)[i]) {
196 if (diff < 0)
197 diff = i;
198 usx2y->in04_last[i] = ((char *)usx2y->in04_buf)[i];
199 }
200 }
201 }
202 if (diff >= 0) {
203 n = us428ctls->ctl_snapshot_last + 1;
204 if (n >= N_US428_CTL_BUFS || n < 0)
205 n = 0;
206 memcpy(us428ctls->ctl_snapshot + n, usx2y->in04_buf, sizeof(us428ctls->ctl_snapshot[0]));
207 us428ctls->ctl_snapshot_differs_at[n] = diff;
208 us428ctls->ctl_snapshot_last = n;
209 wake_up(&usx2y->us428ctls_wait_queue_head);
210 }
211 }
212
213 if (usx2y->us04) {
214 if (!usx2y->us04->submitted) {
215 do {
216 err = usb_submit_urb(usx2y->us04->urb[usx2y->us04->submitted++], GFP_ATOMIC);
217 } while (!err && usx2y->us04->submitted < usx2y->us04->len);
218 }
219 } else {
220 if (us428ctls && us428ctls->p4out_last >= 0 && us428ctls->p4out_last < N_US428_P4OUT_BUFS) {
221 if (us428ctls->p4out_last != us428ctls->p4out_sent) {
222 send = us428ctls->p4out_sent + 1;
223 if (send >= N_US428_P4OUT_BUFS)
224 send = 0;
225 for (j = 0; j < URBS_ASYNC_SEQ && !err; ++j) {
226 if (!usx2y->as04.urb[j]->status) {
227 p4out = us428ctls->p4out + send; // FIXME if more than 1 p4out is new, 1 gets lost.
228 usb_fill_bulk_urb(usx2y->as04.urb[j], usx2y->dev,
229 usb_sndbulkpipe(usx2y->dev, 0x04), &p4out->val.vol,
230 p4out->type == ELT_LIGHT ? sizeof(struct us428_lights) : 5,
231 i_usx2y_out04_int, usx2y);
232 err = usb_submit_urb(usx2y->as04.urb[j], GFP_ATOMIC);
233 us428ctls->p4out_sent = send;
234 break;
235 }
236 }
237 }
238 }
239 }
240
241 if (err)
242 snd_printk(KERN_ERR "in04_int() usb_submit_urb err=%i\n", err);
243
244 urb->dev = usx2y->dev;
245 usb_submit_urb(urb, GFP_ATOMIC);
246 }
247
248 /*
249 * Prepare some urbs
250 */
usx2y_async_seq04_init(struct usx2ydev * usx2y)251 int usx2y_async_seq04_init(struct usx2ydev *usx2y)
252 {
253 int err = 0, i;
254
255 if (WARN_ON(usx2y->as04.buffer))
256 return -EBUSY;
257
258 usx2y->as04.buffer = kmalloc_array(URBS_ASYNC_SEQ,
259 URB_DATA_LEN_ASYNC_SEQ, GFP_KERNEL);
260 if (!usx2y->as04.buffer) {
261 err = -ENOMEM;
262 } else {
263 for (i = 0; i < URBS_ASYNC_SEQ; ++i) {
264 usx2y->as04.urb[i] = usb_alloc_urb(0, GFP_KERNEL);
265 if (!usx2y->as04.urb[i]) {
266 err = -ENOMEM;
267 break;
268 }
269 usb_fill_bulk_urb(usx2y->as04.urb[i], usx2y->dev,
270 usb_sndbulkpipe(usx2y->dev, 0x04),
271 usx2y->as04.buffer + URB_DATA_LEN_ASYNC_SEQ * i, 0,
272 i_usx2y_out04_int, usx2y);
273 err = usb_urb_ep_type_check(usx2y->as04.urb[i]);
274 if (err < 0)
275 break;
276 }
277 }
278 if (err)
279 usx2y_unlinkseq(&usx2y->as04);
280 return err;
281 }
282
usx2y_in04_init(struct usx2ydev * usx2y)283 int usx2y_in04_init(struct usx2ydev *usx2y)
284 {
285 int err;
286
287 if (WARN_ON(usx2y->in04_urb))
288 return -EBUSY;
289
290 usx2y->in04_urb = usb_alloc_urb(0, GFP_KERNEL);
291 if (!usx2y->in04_urb) {
292 err = -ENOMEM;
293 goto error;
294 }
295
296 usx2y->in04_buf = kmalloc(21, GFP_KERNEL);
297 if (!usx2y->in04_buf) {
298 err = -ENOMEM;
299 goto error;
300 }
301
302 init_waitqueue_head(&usx2y->in04_wait_queue);
303 usb_fill_int_urb(usx2y->in04_urb, usx2y->dev, usb_rcvintpipe(usx2y->dev, 0x4),
304 usx2y->in04_buf, 21,
305 i_usx2y_in04_int, usx2y,
306 10);
307 if (usb_urb_ep_type_check(usx2y->in04_urb)) {
308 err = -EINVAL;
309 goto error;
310 }
311 return usb_submit_urb(usx2y->in04_urb, GFP_KERNEL);
312
313 error:
314 kfree(usx2y->in04_buf);
315 usb_free_urb(usx2y->in04_urb);
316 usx2y->in04_buf = NULL;
317 usx2y->in04_urb = NULL;
318 return err;
319 }
320
usx2y_unlinkseq(struct snd_usx2y_async_seq * s)321 static void usx2y_unlinkseq(struct snd_usx2y_async_seq *s)
322 {
323 int i;
324
325 for (i = 0; i < URBS_ASYNC_SEQ; ++i) {
326 if (!s->urb[i])
327 continue;
328 usb_kill_urb(s->urb[i]);
329 usb_free_urb(s->urb[i]);
330 s->urb[i] = NULL;
331 }
332 kfree(s->buffer);
333 s->buffer = NULL;
334 }
335
336 static const struct usb_device_id snd_usx2y_usb_id_table[] = {
337 {
338 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
339 .idVendor = 0x1604,
340 .idProduct = USB_ID_US428
341 },
342 {
343 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
344 .idVendor = 0x1604,
345 .idProduct = USB_ID_US122
346 },
347 {
348 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
349 .idVendor = 0x1604,
350 .idProduct = USB_ID_US224
351 },
352 { /* terminator */ }
353 };
354 MODULE_DEVICE_TABLE(usb, snd_usx2y_usb_id_table);
355
usx2y_create_card(struct usb_device * device,struct usb_interface * intf,struct snd_card ** cardp)356 static int usx2y_create_card(struct usb_device *device,
357 struct usb_interface *intf,
358 struct snd_card **cardp)
359 {
360 int dev;
361 struct snd_card *card;
362 int err;
363
364 for (dev = 0; dev < SNDRV_CARDS; ++dev)
365 if (enable[dev] && !snd_usx2y_card_used[dev])
366 break;
367 if (dev >= SNDRV_CARDS)
368 return -ENODEV;
369 err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE,
370 sizeof(struct usx2ydev), &card);
371 if (err < 0)
372 return err;
373 snd_usx2y_card_used[usx2y(card)->card_index = dev] = 1;
374 card->private_free = snd_usx2y_card_private_free;
375 usx2y(card)->dev = device;
376 init_waitqueue_head(&usx2y(card)->prepare_wait_queue);
377 init_waitqueue_head(&usx2y(card)->us428ctls_wait_queue_head);
378 mutex_init(&usx2y(card)->pcm_mutex);
379 INIT_LIST_HEAD(&usx2y(card)->midi_list);
380 strcpy(card->driver, "USB "NAME_ALLCAPS"");
381 sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
382 sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
383 card->shortname,
384 le16_to_cpu(device->descriptor.idVendor),
385 le16_to_cpu(device->descriptor.idProduct),
386 0,//us428(card)->usbmidi.ifnum,
387 usx2y(card)->dev->bus->busnum, usx2y(card)->dev->devnum);
388 *cardp = card;
389 return 0;
390 }
391
snd_usx2y_card_private_free(struct snd_card * card)392 static void snd_usx2y_card_private_free(struct snd_card *card)
393 {
394 struct usx2ydev *usx2y = usx2y(card);
395
396 kfree(usx2y->in04_buf);
397 usb_free_urb(usx2y->in04_urb);
398 if (usx2y->us428ctls_sharedmem)
399 free_pages_exact(usx2y->us428ctls_sharedmem,
400 US428_SHAREDMEM_PAGES);
401 if (usx2y->card_index >= 0 && usx2y->card_index < SNDRV_CARDS)
402 snd_usx2y_card_used[usx2y->card_index] = 0;
403 }
404
snd_usx2y_disconnect(struct usb_interface * intf)405 static void snd_usx2y_disconnect(struct usb_interface *intf)
406 {
407 struct snd_card *card;
408 struct usx2ydev *usx2y;
409 struct list_head *p;
410
411 card = usb_get_intfdata(intf);
412 if (!card)
413 return;
414 usx2y = usx2y(card);
415 usx2y->chip_status = USX2Y_STAT_CHIP_HUP;
416 usx2y_unlinkseq(&usx2y->as04);
417 usb_kill_urb(usx2y->in04_urb);
418 snd_card_disconnect(card);
419
420 /* release the midi resources */
421 list_for_each(p, &usx2y->midi_list) {
422 snd_usbmidi_disconnect(p);
423 }
424 if (usx2y->us428ctls_sharedmem)
425 wake_up(&usx2y->us428ctls_wait_queue_head);
426 snd_card_free(card);
427 }
428
snd_usx2y_probe(struct usb_interface * intf,const struct usb_device_id * id)429 static int snd_usx2y_probe(struct usb_interface *intf,
430 const struct usb_device_id *id)
431 {
432 struct usb_device *device = interface_to_usbdev(intf);
433 struct snd_card *card;
434 int err;
435
436 if (le16_to_cpu(device->descriptor.idVendor) != 0x1604 ||
437 (le16_to_cpu(device->descriptor.idProduct) != USB_ID_US122 &&
438 le16_to_cpu(device->descriptor.idProduct) != USB_ID_US224 &&
439 le16_to_cpu(device->descriptor.idProduct) != USB_ID_US428))
440 return -EINVAL;
441
442 err = usx2y_create_card(device, intf, &card);
443 if (err < 0)
444 return err;
445 err = usx2y_hwdep_new(card, device);
446 if (err < 0)
447 goto error;
448 err = snd_card_register(card);
449 if (err < 0)
450 goto error;
451
452 dev_set_drvdata(&intf->dev, card);
453 return 0;
454
455 error:
456 snd_card_free(card);
457 return err;
458 }
459
460 static struct usb_driver snd_usx2y_usb_driver = {
461 .name = "snd-usb-usx2y",
462 .probe = snd_usx2y_probe,
463 .disconnect = snd_usx2y_disconnect,
464 .id_table = snd_usx2y_usb_id_table,
465 };
466 module_usb_driver(snd_usx2y_usb_driver);
467