1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * caiaq.c: ALSA driver for caiaq/NativeInstruments devices
4 *
5 * Copyright (c) 2007 Daniel Mack <daniel@caiaq.de>
6 * Karsten Wiese <fzu@wemgehoertderstaat.de>
7 */
8
9 #include <linux/moduleparam.h>
10 #include <linux/device.h>
11 #include <linux/interrupt.h>
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/gfp.h>
15 #include <linux/usb.h>
16 #include <sound/initval.h>
17 #include <sound/core.h>
18 #include <sound/pcm.h>
19
20 #include "device.h"
21 #include "audio.h"
22 #include "midi.h"
23 #include "control.h"
24 #include "input.h"
25
26 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
27 MODULE_DESCRIPTION("caiaq USB audio");
28 MODULE_LICENSE("GPL");
29
30 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
31 static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
32 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
33
34 module_param_array(index, int, NULL, 0444);
35 MODULE_PARM_DESC(index, "Index value for the caiaq sound device");
36 module_param_array(id, charp, NULL, 0444);
37 MODULE_PARM_DESC(id, "ID string for the caiaq soundcard.");
38 module_param_array(enable, bool, NULL, 0444);
39 MODULE_PARM_DESC(enable, "Enable the caiaq soundcard.");
40
41 enum {
42 SAMPLERATE_44100 = 0,
43 SAMPLERATE_48000 = 1,
44 SAMPLERATE_96000 = 2,
45 SAMPLERATE_192000 = 3,
46 SAMPLERATE_88200 = 4,
47 SAMPLERATE_INVALID = 0xff
48 };
49
50 enum {
51 DEPTH_NONE = 0,
52 DEPTH_16 = 1,
53 DEPTH_24 = 2,
54 DEPTH_32 = 3
55 };
56
57 static const struct usb_device_id snd_usb_id_table[] = {
58 {
59 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
60 .idVendor = USB_VID_NATIVEINSTRUMENTS,
61 .idProduct = USB_PID_RIGKONTROL2
62 },
63 {
64 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
65 .idVendor = USB_VID_NATIVEINSTRUMENTS,
66 .idProduct = USB_PID_RIGKONTROL3
67 },
68 {
69 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
70 .idVendor = USB_VID_NATIVEINSTRUMENTS,
71 .idProduct = USB_PID_KORECONTROLLER
72 },
73 {
74 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
75 .idVendor = USB_VID_NATIVEINSTRUMENTS,
76 .idProduct = USB_PID_KORECONTROLLER2
77 },
78 {
79 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
80 .idVendor = USB_VID_NATIVEINSTRUMENTS,
81 .idProduct = USB_PID_AK1
82 },
83 {
84 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
85 .idVendor = USB_VID_NATIVEINSTRUMENTS,
86 .idProduct = USB_PID_AUDIO8DJ
87 },
88 {
89 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
90 .idVendor = USB_VID_NATIVEINSTRUMENTS,
91 .idProduct = USB_PID_SESSIONIO
92 },
93 {
94 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
95 .idVendor = USB_VID_NATIVEINSTRUMENTS,
96 .idProduct = USB_PID_GUITARRIGMOBILE
97 },
98 {
99 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
100 .idVendor = USB_VID_NATIVEINSTRUMENTS,
101 .idProduct = USB_PID_AUDIO4DJ
102 },
103 {
104 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
105 .idVendor = USB_VID_NATIVEINSTRUMENTS,
106 .idProduct = USB_PID_AUDIO2DJ
107 },
108 {
109 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
110 .idVendor = USB_VID_NATIVEINSTRUMENTS,
111 .idProduct = USB_PID_TRAKTORKONTROLX1
112 },
113 {
114 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
115 .idVendor = USB_VID_NATIVEINSTRUMENTS,
116 .idProduct = USB_PID_TRAKTORKONTROLS4
117 },
118 {
119 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
120 .idVendor = USB_VID_NATIVEINSTRUMENTS,
121 .idProduct = USB_PID_TRAKTORAUDIO2
122 },
123 {
124 .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
125 .idVendor = USB_VID_NATIVEINSTRUMENTS,
126 .idProduct = USB_PID_MASCHINECONTROLLER
127 },
128 { /* terminator */ }
129 };
130
usb_ep1_command_reply_dispatch(struct urb * urb)131 static void usb_ep1_command_reply_dispatch (struct urb* urb)
132 {
133 int ret;
134 struct device *dev = &urb->dev->dev;
135 struct snd_usb_caiaqdev *cdev = urb->context;
136 unsigned char *buf = urb->transfer_buffer;
137
138 if (urb->status || !cdev) {
139 dev_warn(dev, "received EP1 urb->status = %i\n", urb->status);
140 return;
141 }
142
143 switch(buf[0]) {
144 case EP1_CMD_GET_DEVICE_INFO:
145 memcpy(&cdev->spec, buf+1, sizeof(struct caiaq_device_spec));
146 cdev->spec.fw_version = le16_to_cpu(cdev->spec.fw_version);
147 dev_dbg(dev, "device spec (firmware %d): audio: %d in, %d out, "
148 "MIDI: %d in, %d out, data alignment %d\n",
149 cdev->spec.fw_version,
150 cdev->spec.num_analog_audio_in,
151 cdev->spec.num_analog_audio_out,
152 cdev->spec.num_midi_in,
153 cdev->spec.num_midi_out,
154 cdev->spec.data_alignment);
155
156 cdev->spec_received++;
157 wake_up(&cdev->ep1_wait_queue);
158 break;
159 case EP1_CMD_AUDIO_PARAMS:
160 cdev->audio_parm_answer = buf[1];
161 wake_up(&cdev->ep1_wait_queue);
162 break;
163 case EP1_CMD_MIDI_READ:
164 snd_usb_caiaq_midi_handle_input(cdev, buf[1], buf + 3, buf[2]);
165 break;
166 case EP1_CMD_READ_IO:
167 if (cdev->chip.usb_id ==
168 USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ)) {
169 if (urb->actual_length > sizeof(cdev->control_state))
170 urb->actual_length = sizeof(cdev->control_state);
171 memcpy(cdev->control_state, buf + 1, urb->actual_length);
172 wake_up(&cdev->ep1_wait_queue);
173 break;
174 }
175 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
176 fallthrough;
177 case EP1_CMD_READ_ERP:
178 case EP1_CMD_READ_ANALOG:
179 snd_usb_caiaq_input_dispatch(cdev, buf, urb->actual_length);
180 #endif
181 break;
182 }
183
184 cdev->ep1_in_urb.actual_length = 0;
185 ret = usb_submit_urb(&cdev->ep1_in_urb, GFP_ATOMIC);
186 if (ret < 0)
187 dev_err(dev, "unable to submit urb. OOM!?\n");
188 }
189
snd_usb_caiaq_send_command(struct snd_usb_caiaqdev * cdev,unsigned char command,const unsigned char * buffer,int len)190 int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *cdev,
191 unsigned char command,
192 const unsigned char *buffer,
193 int len)
194 {
195 int actual_len;
196 struct usb_device *usb_dev = cdev->chip.dev;
197
198 if (!usb_dev)
199 return -EIO;
200
201 if (len > EP1_BUFSIZE - 1)
202 len = EP1_BUFSIZE - 1;
203
204 if (buffer && len > 0)
205 memcpy(cdev->ep1_out_buf+1, buffer, len);
206
207 cdev->ep1_out_buf[0] = command;
208 return usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, 1),
209 cdev->ep1_out_buf, len+1, &actual_len, 200);
210 }
211
snd_usb_caiaq_send_command_bank(struct snd_usb_caiaqdev * cdev,unsigned char command,unsigned char bank,const unsigned char * buffer,int len)212 int snd_usb_caiaq_send_command_bank(struct snd_usb_caiaqdev *cdev,
213 unsigned char command,
214 unsigned char bank,
215 const unsigned char *buffer,
216 int len)
217 {
218 int actual_len;
219 struct usb_device *usb_dev = cdev->chip.dev;
220
221 if (!usb_dev)
222 return -EIO;
223
224 if (len > EP1_BUFSIZE - 2)
225 len = EP1_BUFSIZE - 2;
226
227 if (buffer && len > 0)
228 memcpy(cdev->ep1_out_buf+2, buffer, len);
229
230 cdev->ep1_out_buf[0] = command;
231 cdev->ep1_out_buf[1] = bank;
232
233 return usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, 1),
234 cdev->ep1_out_buf, len+2, &actual_len, 200);
235 }
236
snd_usb_caiaq_set_audio_params(struct snd_usb_caiaqdev * cdev,int rate,int depth,int bpp)237 int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *cdev,
238 int rate, int depth, int bpp)
239 {
240 int ret;
241 char tmp[5];
242 struct device *dev = caiaqdev_to_dev(cdev);
243
244 switch (rate) {
245 case 44100: tmp[0] = SAMPLERATE_44100; break;
246 case 48000: tmp[0] = SAMPLERATE_48000; break;
247 case 88200: tmp[0] = SAMPLERATE_88200; break;
248 case 96000: tmp[0] = SAMPLERATE_96000; break;
249 case 192000: tmp[0] = SAMPLERATE_192000; break;
250 default: return -EINVAL;
251 }
252
253 switch (depth) {
254 case 16: tmp[1] = DEPTH_16; break;
255 case 24: tmp[1] = DEPTH_24; break;
256 default: return -EINVAL;
257 }
258
259 tmp[2] = bpp & 0xff;
260 tmp[3] = bpp >> 8;
261 tmp[4] = 1; /* packets per microframe */
262
263 dev_dbg(dev, "setting audio params: %d Hz, %d bits, %d bpp\n",
264 rate, depth, bpp);
265
266 cdev->audio_parm_answer = -1;
267 ret = snd_usb_caiaq_send_command(cdev, EP1_CMD_AUDIO_PARAMS,
268 tmp, sizeof(tmp));
269
270 if (ret)
271 return ret;
272
273 if (!wait_event_timeout(cdev->ep1_wait_queue,
274 cdev->audio_parm_answer >= 0, HZ))
275 return -EPIPE;
276
277 if (cdev->audio_parm_answer != 1)
278 dev_dbg(dev, "unable to set the device's audio params\n");
279 else
280 cdev->bpp = bpp;
281
282 return cdev->audio_parm_answer == 1 ? 0 : -EINVAL;
283 }
284
snd_usb_caiaq_set_auto_msg(struct snd_usb_caiaqdev * cdev,int digital,int analog,int erp)285 int snd_usb_caiaq_set_auto_msg(struct snd_usb_caiaqdev *cdev,
286 int digital, int analog, int erp)
287 {
288 char tmp[3] = { digital, analog, erp };
289 return snd_usb_caiaq_send_command(cdev, EP1_CMD_AUTO_MSG,
290 tmp, sizeof(tmp));
291 }
292
setup_card(struct snd_usb_caiaqdev * cdev)293 static int setup_card(struct snd_usb_caiaqdev *cdev)
294 {
295 int ret;
296 char val[4];
297 struct device *dev = caiaqdev_to_dev(cdev);
298
299 /* device-specific startup specials */
300 switch (cdev->chip.usb_id) {
301 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
302 /* RigKontrol2 - display centered dash ('-') */
303 val[0] = 0x00;
304 val[1] = 0x00;
305 val[2] = 0x01;
306 snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 3);
307 break;
308 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
309 /* RigKontrol2 - display two centered dashes ('--') */
310 val[0] = 0x00;
311 val[1] = 0x40;
312 val[2] = 0x40;
313 val[3] = 0x00;
314 snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 4);
315 break;
316 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
317 /* Audio Kontrol 1 - make USB-LED stop blinking */
318 val[0] = 0x00;
319 snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 1);
320 break;
321 case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
322 /* Audio 8 DJ - trigger read of current settings */
323 cdev->control_state[0] = 0xff;
324 snd_usb_caiaq_set_auto_msg(cdev, 1, 0, 0);
325 snd_usb_caiaq_send_command(cdev, EP1_CMD_READ_IO, NULL, 0);
326
327 if (!wait_event_timeout(cdev->ep1_wait_queue,
328 cdev->control_state[0] != 0xff, HZ)) {
329 dev_err(dev, "Read timeout for control state\n");
330 return -EINVAL;
331 }
332
333 /* fix up some defaults */
334 if ((cdev->control_state[1] != 2) ||
335 (cdev->control_state[2] != 3) ||
336 (cdev->control_state[4] != 2)) {
337 cdev->control_state[1] = 2;
338 cdev->control_state[2] = 3;
339 cdev->control_state[4] = 2;
340 snd_usb_caiaq_send_command(cdev,
341 EP1_CMD_WRITE_IO, cdev->control_state, 6);
342 }
343
344 break;
345 }
346
347 if (cdev->spec.num_analog_audio_out +
348 cdev->spec.num_analog_audio_in +
349 cdev->spec.num_digital_audio_out +
350 cdev->spec.num_digital_audio_in > 0) {
351 ret = snd_usb_caiaq_audio_init(cdev);
352 if (ret < 0) {
353 dev_err(dev, "Unable to set up audio system (ret=%d)\n", ret);
354 return ret;
355 }
356 }
357
358 if (cdev->spec.num_midi_in +
359 cdev->spec.num_midi_out > 0) {
360 ret = snd_usb_caiaq_midi_init(cdev);
361 if (ret < 0) {
362 dev_err(dev, "Unable to set up MIDI system (ret=%d)\n", ret);
363 return ret;
364 }
365 }
366
367 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
368 ret = snd_usb_caiaq_input_init(cdev);
369 if (ret < 0) {
370 dev_err(dev, "Unable to set up input system (ret=%d)\n", ret);
371 return ret;
372 }
373 #endif
374
375 /* finally, register the card and all its sub-instances */
376 ret = snd_card_register(cdev->chip.card);
377 if (ret < 0) {
378 dev_err(dev, "snd_card_register() returned %d\n", ret);
379 return ret;
380 }
381
382 ret = snd_usb_caiaq_control_init(cdev);
383 if (ret < 0) {
384 dev_err(dev, "Unable to set up control system (ret=%d)\n", ret);
385 return ret;
386 }
387
388 return 0;
389 }
390
card_free(struct snd_card * card)391 static void card_free(struct snd_card *card)
392 {
393 struct snd_usb_caiaqdev *cdev = caiaqdev(card);
394
395 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
396 snd_usb_caiaq_input_free(cdev);
397 #endif
398 snd_usb_caiaq_audio_free(cdev);
399 usb_put_dev(cdev->chip.dev);
400 }
401
create_card(struct usb_device * usb_dev,struct usb_interface * intf,struct snd_card ** cardp)402 static int create_card(struct usb_device *usb_dev,
403 struct usb_interface *intf,
404 struct snd_card **cardp)
405 {
406 int devnum;
407 int err;
408 struct snd_card *card;
409 struct snd_usb_caiaqdev *cdev;
410
411 for (devnum = 0; devnum < SNDRV_CARDS; devnum++)
412 if (enable[devnum])
413 break;
414
415 if (devnum >= SNDRV_CARDS)
416 return -ENODEV;
417
418 err = snd_card_new(&intf->dev,
419 index[devnum], id[devnum], THIS_MODULE,
420 sizeof(struct snd_usb_caiaqdev), &card);
421 if (err < 0)
422 return err;
423
424 cdev = caiaqdev(card);
425 cdev->chip.dev = usb_get_dev(usb_dev);
426 cdev->chip.card = card;
427 cdev->chip.usb_id = USB_ID(le16_to_cpu(usb_dev->descriptor.idVendor),
428 le16_to_cpu(usb_dev->descriptor.idProduct));
429 spin_lock_init(&cdev->spinlock);
430
431 *cardp = card;
432 return 0;
433 }
434
init_card(struct snd_usb_caiaqdev * cdev)435 static int init_card(struct snd_usb_caiaqdev *cdev)
436 {
437 char *c, usbpath[32];
438 struct usb_device *usb_dev = cdev->chip.dev;
439 struct snd_card *card = cdev->chip.card;
440 struct device *dev = caiaqdev_to_dev(cdev);
441 int err, len;
442
443 if (usb_set_interface(usb_dev, 0, 1) != 0) {
444 dev_err(dev, "can't set alt interface.\n");
445 return -EIO;
446 }
447
448 usb_init_urb(&cdev->ep1_in_urb);
449 usb_init_urb(&cdev->midi_out_urb);
450
451 usb_fill_bulk_urb(&cdev->ep1_in_urb, usb_dev,
452 usb_rcvbulkpipe(usb_dev, 0x1),
453 cdev->ep1_in_buf, EP1_BUFSIZE,
454 usb_ep1_command_reply_dispatch, cdev);
455
456 usb_fill_bulk_urb(&cdev->midi_out_urb, usb_dev,
457 usb_sndbulkpipe(usb_dev, 0x1),
458 cdev->midi_out_buf, EP1_BUFSIZE,
459 snd_usb_caiaq_midi_output_done, cdev);
460
461 /* sanity checks of EPs before actually submitting */
462 if (usb_urb_ep_type_check(&cdev->ep1_in_urb) ||
463 usb_urb_ep_type_check(&cdev->midi_out_urb)) {
464 dev_err(dev, "invalid EPs\n");
465 return -EINVAL;
466 }
467
468 init_waitqueue_head(&cdev->ep1_wait_queue);
469 init_waitqueue_head(&cdev->prepare_wait_queue);
470
471 if (usb_submit_urb(&cdev->ep1_in_urb, GFP_KERNEL) != 0)
472 return -EIO;
473
474 err = snd_usb_caiaq_send_command(cdev, EP1_CMD_GET_DEVICE_INFO, NULL, 0);
475 if (err)
476 goto err_kill_urb;
477
478 if (!wait_event_timeout(cdev->ep1_wait_queue, cdev->spec_received, HZ)) {
479 err = -ENODEV;
480 goto err_kill_urb;
481 }
482
483 usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
484 cdev->vendor_name, CAIAQ_USB_STR_LEN);
485
486 usb_string(usb_dev, usb_dev->descriptor.iProduct,
487 cdev->product_name, CAIAQ_USB_STR_LEN);
488
489 strscpy(card->driver, MODNAME, sizeof(card->driver));
490 strscpy(card->shortname, cdev->product_name, sizeof(card->shortname));
491 strscpy(card->mixername, cdev->product_name, sizeof(card->mixername));
492
493 /* if the id was not passed as module option, fill it with a shortened
494 * version of the product string which does not contain any
495 * whitespaces */
496
497 if (*card->id == '\0') {
498 char id[sizeof(card->id)];
499
500 memset(id, 0, sizeof(id));
501
502 for (c = card->shortname, len = 0;
503 *c && len < sizeof(card->id) - 1; c++)
504 if (*c != ' ')
505 id[len++] = *c;
506
507 snd_card_set_id(card, id);
508 }
509
510 usb_make_path(usb_dev, usbpath, sizeof(usbpath));
511 scnprintf(card->longname, sizeof(card->longname), "%s %s (%s)",
512 cdev->vendor_name, cdev->product_name, usbpath);
513
514 card->private_free = card_free;
515 err = setup_card(cdev);
516 if (err < 0)
517 return err;
518
519 return 0;
520
521 err_kill_urb:
522 usb_kill_urb(&cdev->ep1_in_urb);
523 return err;
524 }
525
snd_probe(struct usb_interface * intf,const struct usb_device_id * id)526 static int snd_probe(struct usb_interface *intf,
527 const struct usb_device_id *id)
528 {
529 int ret;
530 struct snd_card *card = NULL;
531 struct usb_device *usb_dev = interface_to_usbdev(intf);
532
533 ret = create_card(usb_dev, intf, &card);
534
535 if (ret < 0)
536 return ret;
537
538 usb_set_intfdata(intf, card);
539 ret = init_card(caiaqdev(card));
540 if (ret < 0) {
541 dev_err(&usb_dev->dev, "unable to init card! (ret=%d)\n", ret);
542 snd_card_free(card);
543 return ret;
544 }
545
546 return 0;
547 }
548
snd_disconnect(struct usb_interface * intf)549 static void snd_disconnect(struct usb_interface *intf)
550 {
551 struct snd_card *card = usb_get_intfdata(intf);
552 struct device *dev = intf->usb_dev;
553 struct snd_usb_caiaqdev *cdev;
554
555 if (!card)
556 return;
557
558 cdev = caiaqdev(card);
559 dev_dbg(dev, "%s(%p)\n", __func__, intf);
560
561 snd_card_disconnect(card);
562
563 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
564 snd_usb_caiaq_input_disconnect(cdev);
565 #endif
566 snd_usb_caiaq_audio_disconnect(cdev);
567
568 usb_kill_urb(&cdev->ep1_in_urb);
569 usb_kill_urb(&cdev->midi_out_urb);
570
571 snd_card_free_when_closed(card);
572 }
573
574
575 MODULE_DEVICE_TABLE(usb, snd_usb_id_table);
576 static struct usb_driver snd_usb_driver = {
577 .name = MODNAME,
578 .probe = snd_probe,
579 .disconnect = snd_disconnect,
580 .id_table = snd_usb_id_table,
581 };
582
583 module_usb_driver(snd_usb_driver);
584