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-rw-r--r--sound/usb/misc/ua101.c1388
1 files changed, 1388 insertions, 0 deletions
diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c
new file mode 100644
index 000000000000..fb5d68fa7ff4
--- /dev/null
+++ b/sound/usb/misc/ua101.c
@@ -0,0 +1,1388 @@
1/*
2 * Edirol UA-101/UA-1000 driver
3 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
4 *
5 * This driver is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License, version 2.
7 *
8 * This driver is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this driver. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#include <linux/init.h>
18#include <linux/module.h>
19#include <linux/slab.h>
20#include <linux/usb.h>
21#include <linux/usb/audio.h>
22#include <sound/core.h>
23#include <sound/initval.h>
24#include <sound/pcm.h>
25#include <sound/pcm_params.h>
26#include "../usbaudio.h"
27#include "../midi.h"
28
29MODULE_DESCRIPTION("Edirol UA-101/1000 driver");
30MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
31MODULE_LICENSE("GPL v2");
32MODULE_SUPPORTED_DEVICE("{{Edirol,UA-101},{Edirol,UA-1000}}");
33
34/*
35 * Should not be lower than the minimum scheduling delay of the host
36 * controller. Some Intel controllers need more than one frame; as long as
37 * that driver doesn't tell us about this, use 1.5 frames just to be sure.
38 */
39#define MIN_QUEUE_LENGTH 12
40/* Somewhat random. */
41#define MAX_QUEUE_LENGTH 30
42/*
43 * This magic value optimizes memory usage efficiency for the UA-101's packet
44 * sizes at all sample rates, taking into account the stupid cache pool sizes
45 * that usb_alloc_coherent() uses.
46 */
47#define DEFAULT_QUEUE_LENGTH 21
48
49#define MAX_PACKET_SIZE 672 /* hardware specific */
50#define MAX_MEMORY_BUFFERS DIV_ROUND_UP(MAX_QUEUE_LENGTH, \
51 PAGE_SIZE / MAX_PACKET_SIZE)
52
53static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
54static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
55static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
56static unsigned int queue_length = 21;
57
58module_param_array(index, int, NULL, 0444);
59MODULE_PARM_DESC(index, "card index");
60module_param_array(id, charp, NULL, 0444);
61MODULE_PARM_DESC(id, "ID string");
62module_param_array(enable, bool, NULL, 0444);
63MODULE_PARM_DESC(enable, "enable card");
64module_param(queue_length, uint, 0644);
65MODULE_PARM_DESC(queue_length, "USB queue length in microframes, "
66 __stringify(MIN_QUEUE_LENGTH)"-"__stringify(MAX_QUEUE_LENGTH));
67
68enum {
69 INTF_PLAYBACK,
70 INTF_CAPTURE,
71 INTF_MIDI,
72
73 INTF_COUNT
74};
75
76/* bits in struct ua101::states */
77enum {
78 USB_CAPTURE_RUNNING,
79 USB_PLAYBACK_RUNNING,
80 ALSA_CAPTURE_OPEN,
81 ALSA_PLAYBACK_OPEN,
82 ALSA_CAPTURE_RUNNING,
83 ALSA_PLAYBACK_RUNNING,
84 CAPTURE_URB_COMPLETED,
85 PLAYBACK_URB_COMPLETED,
86 DISCONNECTED,
87};
88
89struct ua101 {
90 struct usb_device *dev;
91 struct snd_card *card;
92 struct usb_interface *intf[INTF_COUNT];
93 int card_index;
94 struct snd_pcm *pcm;
95 struct list_head midi_list;
96 u64 format_bit;
97 unsigned int rate;
98 unsigned int packets_per_second;
99 spinlock_t lock;
100 struct mutex mutex;
101 unsigned long states;
102
103 /* FIFO to synchronize playback rate to capture rate */
104 unsigned int rate_feedback_start;
105 unsigned int rate_feedback_count;
106 u8 rate_feedback[MAX_QUEUE_LENGTH];
107
108 struct list_head ready_playback_urbs;
109 struct tasklet_struct playback_tasklet;
110 wait_queue_head_t alsa_capture_wait;
111 wait_queue_head_t rate_feedback_wait;
112 wait_queue_head_t alsa_playback_wait;
113 struct ua101_stream {
114 struct snd_pcm_substream *substream;
115 unsigned int usb_pipe;
116 unsigned int channels;
117 unsigned int frame_bytes;
118 unsigned int max_packet_bytes;
119 unsigned int period_pos;
120 unsigned int buffer_pos;
121 unsigned int queue_length;
122 struct ua101_urb {
123 struct urb urb;
124 struct usb_iso_packet_descriptor iso_frame_desc[1];
125 struct list_head ready_list;
126 } *urbs[MAX_QUEUE_LENGTH];
127 struct {
128 unsigned int size;
129 void *addr;
130 dma_addr_t dma;
131 } buffers[MAX_MEMORY_BUFFERS];
132 } capture, playback;
133};
134
135static DEFINE_MUTEX(devices_mutex);
136static unsigned int devices_used;
137static struct usb_driver ua101_driver;
138
139static void abort_alsa_playback(struct ua101 *ua);
140static void abort_alsa_capture(struct ua101 *ua);
141
142static const char *usb_error_string(int err)
143{
144 switch (err) {
145 case -ENODEV:
146 return "no device";
147 case -ENOENT:
148 return "endpoint not enabled";
149 case -EPIPE:
150 return "endpoint stalled";
151 case -ENOSPC:
152 return "not enough bandwidth";
153 case -ESHUTDOWN:
154 return "device disabled";
155 case -EHOSTUNREACH:
156 return "device suspended";
157 case -EINVAL:
158 case -EAGAIN:
159 case -EFBIG:
160 case -EMSGSIZE:
161 return "internal error";
162 default:
163 return "unknown error";
164 }
165}
166
167static void abort_usb_capture(struct ua101 *ua)
168{
169 if (test_and_clear_bit(USB_CAPTURE_RUNNING, &ua->states)) {
170 wake_up(&ua->alsa_capture_wait);
171 wake_up(&ua->rate_feedback_wait);
172 }
173}
174
175static void abort_usb_playback(struct ua101 *ua)
176{
177 if (test_and_clear_bit(USB_PLAYBACK_RUNNING, &ua->states))
178 wake_up(&ua->alsa_playback_wait);
179}
180
181static void playback_urb_complete(struct urb *usb_urb)
182{
183 struct ua101_urb *urb = (struct ua101_urb *)usb_urb;
184 struct ua101 *ua = urb->urb.context;
185 unsigned long flags;
186
187 if (unlikely(urb->urb.status == -ENOENT || /* unlinked */
188 urb->urb.status == -ENODEV || /* device removed */
189 urb->urb.status == -ECONNRESET || /* unlinked */
190 urb->urb.status == -ESHUTDOWN)) { /* device disabled */
191 abort_usb_playback(ua);
192 abort_alsa_playback(ua);
193 return;
194 }
195
196 if (test_bit(USB_PLAYBACK_RUNNING, &ua->states)) {
197 /* append URB to FIFO */
198 spin_lock_irqsave(&ua->lock, flags);
199 list_add_tail(&urb->ready_list, &ua->ready_playback_urbs);
200 if (ua->rate_feedback_count > 0)
201 tasklet_schedule(&ua->playback_tasklet);
202 ua->playback.substream->runtime->delay -=
203 urb->urb.iso_frame_desc[0].length /
204 ua->playback.frame_bytes;
205 spin_unlock_irqrestore(&ua->lock, flags);
206 }
207}
208
209static void first_playback_urb_complete(struct urb *urb)
210{
211 struct ua101 *ua = urb->context;
212
213 urb->complete = playback_urb_complete;
214 playback_urb_complete(urb);
215
216 set_bit(PLAYBACK_URB_COMPLETED, &ua->states);
217 wake_up(&ua->alsa_playback_wait);
218}
219
220/* copy data from the ALSA ring buffer into the URB buffer */
221static bool copy_playback_data(struct ua101_stream *stream, struct urb *urb,
222 unsigned int frames)
223{
224 struct snd_pcm_runtime *runtime;
225 unsigned int frame_bytes, frames1;
226 const u8 *source;
227
228 runtime = stream->substream->runtime;
229 frame_bytes = stream->frame_bytes;
230 source = runtime->dma_area + stream->buffer_pos * frame_bytes;
231 if (stream->buffer_pos + frames <= runtime->buffer_size) {
232 memcpy(urb->transfer_buffer, source, frames * frame_bytes);
233 } else {
234 /* wrap around at end of ring buffer */
235 frames1 = runtime->buffer_size - stream->buffer_pos;
236 memcpy(urb->transfer_buffer, source, frames1 * frame_bytes);
237 memcpy(urb->transfer_buffer + frames1 * frame_bytes,
238 runtime->dma_area, (frames - frames1) * frame_bytes);
239 }
240
241 stream->buffer_pos += frames;
242 if (stream->buffer_pos >= runtime->buffer_size)
243 stream->buffer_pos -= runtime->buffer_size;
244 stream->period_pos += frames;
245 if (stream->period_pos >= runtime->period_size) {
246 stream->period_pos -= runtime->period_size;
247 return true;
248 }
249 return false;
250}
251
252static inline void add_with_wraparound(struct ua101 *ua,
253 unsigned int *value, unsigned int add)
254{
255 *value += add;
256 if (*value >= ua->playback.queue_length)
257 *value -= ua->playback.queue_length;
258}
259
260static void playback_tasklet(unsigned long data)
261{
262 struct ua101 *ua = (void *)data;
263 unsigned long flags;
264 unsigned int frames;
265 struct ua101_urb *urb;
266 bool do_period_elapsed = false;
267 int err;
268
269 if (unlikely(!test_bit(USB_PLAYBACK_RUNNING, &ua->states)))
270 return;
271
272 /*
273 * Synchronizing the playback rate to the capture rate is done by using
274 * the same sequence of packet sizes for both streams.
275 * Submitting a playback URB therefore requires both a ready URB and
276 * the size of the corresponding capture packet, i.e., both playback
277 * and capture URBs must have been completed. Since the USB core does
278 * not guarantee that playback and capture complete callbacks are
279 * called alternately, we use two FIFOs for packet sizes and read URBs;
280 * submitting playback URBs is possible as long as both FIFOs are
281 * nonempty.
282 */
283 spin_lock_irqsave(&ua->lock, flags);
284 while (ua->rate_feedback_count > 0 &&
285 !list_empty(&ua->ready_playback_urbs)) {
286 /* take packet size out of FIFO */
287 frames = ua->rate_feedback[ua->rate_feedback_start];
288 add_with_wraparound(ua, &ua->rate_feedback_start, 1);
289 ua->rate_feedback_count--;
290
291 /* take URB out of FIFO */
292 urb = list_first_entry(&ua->ready_playback_urbs,
293 struct ua101_urb, ready_list);
294 list_del(&urb->ready_list);
295
296 /* fill packet with data or silence */
297 urb->urb.iso_frame_desc[0].length =
298 frames * ua->playback.frame_bytes;
299 if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states))
300 do_period_elapsed |= copy_playback_data(&ua->playback,
301 &urb->urb,
302 frames);
303 else
304 memset(urb->urb.transfer_buffer, 0,
305 urb->urb.iso_frame_desc[0].length);
306
307 /* and off you go ... */
308 err = usb_submit_urb(&urb->urb, GFP_ATOMIC);
309 if (unlikely(err < 0)) {
310 spin_unlock_irqrestore(&ua->lock, flags);
311 abort_usb_playback(ua);
312 abort_alsa_playback(ua);
313 dev_err(&ua->dev->dev, "USB request error %d: %s\n",
314 err, usb_error_string(err));
315 return;
316 }
317 ua->playback.substream->runtime->delay += frames;
318 }
319 spin_unlock_irqrestore(&ua->lock, flags);
320 if (do_period_elapsed)
321 snd_pcm_period_elapsed(ua->playback.substream);
322}
323
324/* copy data from the URB buffer into the ALSA ring buffer */
325static bool copy_capture_data(struct ua101_stream *stream, struct urb *urb,
326 unsigned int frames)
327{
328 struct snd_pcm_runtime *runtime;
329 unsigned int frame_bytes, frames1;
330 u8 *dest;
331
332 runtime = stream->substream->runtime;
333 frame_bytes = stream->frame_bytes;
334 dest = runtime->dma_area + stream->buffer_pos * frame_bytes;
335 if (stream->buffer_pos + frames <= runtime->buffer_size) {
336 memcpy(dest, urb->transfer_buffer, frames * frame_bytes);
337 } else {
338 /* wrap around at end of ring buffer */
339 frames1 = runtime->buffer_size - stream->buffer_pos;
340 memcpy(dest, urb->transfer_buffer, frames1 * frame_bytes);
341 memcpy(runtime->dma_area,
342 urb->transfer_buffer + frames1 * frame_bytes,
343 (frames - frames1) * frame_bytes);
344 }
345
346 stream->buffer_pos += frames;
347 if (stream->buffer_pos >= runtime->buffer_size)
348 stream->buffer_pos -= runtime->buffer_size;
349 stream->period_pos += frames;
350 if (stream->period_pos >= runtime->period_size) {
351 stream->period_pos -= runtime->period_size;
352 return true;
353 }
354 return false;
355}
356
357static void capture_urb_complete(struct urb *urb)
358{
359 struct ua101 *ua = urb->context;
360 struct ua101_stream *stream = &ua->capture;
361 unsigned long flags;
362 unsigned int frames, write_ptr;
363 bool do_period_elapsed;
364 int err;
365
366 if (unlikely(urb->status == -ENOENT || /* unlinked */
367 urb->status == -ENODEV || /* device removed */
368 urb->status == -ECONNRESET || /* unlinked */
369 urb->status == -ESHUTDOWN)) /* device disabled */
370 goto stream_stopped;
371
372 if (urb->status >= 0 && urb->iso_frame_desc[0].status >= 0)
373 frames = urb->iso_frame_desc[0].actual_length /
374 stream->frame_bytes;
375 else
376 frames = 0;
377
378 spin_lock_irqsave(&ua->lock, flags);
379
380 if (frames > 0 && test_bit(ALSA_CAPTURE_RUNNING, &ua->states))
381 do_period_elapsed = copy_capture_data(stream, urb, frames);
382 else
383 do_period_elapsed = false;
384
385 if (test_bit(USB_CAPTURE_RUNNING, &ua->states)) {
386 err = usb_submit_urb(urb, GFP_ATOMIC);
387 if (unlikely(err < 0)) {
388 spin_unlock_irqrestore(&ua->lock, flags);
389 dev_err(&ua->dev->dev, "USB request error %d: %s\n",
390 err, usb_error_string(err));
391 goto stream_stopped;
392 }
393
394 /* append packet size to FIFO */
395 write_ptr = ua->rate_feedback_start;
396 add_with_wraparound(ua, &write_ptr, ua->rate_feedback_count);
397 ua->rate_feedback[write_ptr] = frames;
398 if (ua->rate_feedback_count < ua->playback.queue_length) {
399 ua->rate_feedback_count++;
400 if (ua->rate_feedback_count ==
401 ua->playback.queue_length)
402 wake_up(&ua->rate_feedback_wait);
403 } else {
404 /*
405 * Ring buffer overflow; this happens when the playback
406 * stream is not running. Throw away the oldest entry,
407 * so that the playback stream, when it starts, sees
408 * the most recent packet sizes.
409 */
410 add_with_wraparound(ua, &ua->rate_feedback_start, 1);
411 }
412 if (test_bit(USB_PLAYBACK_RUNNING, &ua->states) &&
413 !list_empty(&ua->ready_playback_urbs))
414 tasklet_schedule(&ua->playback_tasklet);
415 }
416
417 spin_unlock_irqrestore(&ua->lock, flags);
418
419 if (do_period_elapsed)
420 snd_pcm_period_elapsed(stream->substream);
421
422 return;
423
424stream_stopped:
425 abort_usb_playback(ua);
426 abort_usb_capture(ua);
427 abort_alsa_playback(ua);
428 abort_alsa_capture(ua);
429}
430
431static void first_capture_urb_complete(struct urb *urb)
432{
433 struct ua101 *ua = urb->context;
434
435 urb->complete = capture_urb_complete;
436 capture_urb_complete(urb);
437
438 set_bit(CAPTURE_URB_COMPLETED, &ua->states);
439 wake_up(&ua->alsa_capture_wait);
440}
441
442static int submit_stream_urbs(struct ua101 *ua, struct ua101_stream *stream)
443{
444 unsigned int i;
445
446 for (i = 0; i < stream->queue_length; ++i) {
447 int err = usb_submit_urb(&stream->urbs[i]->urb, GFP_KERNEL);
448 if (err < 0) {
449 dev_err(&ua->dev->dev, "USB request error %d: %s\n",
450 err, usb_error_string(err));
451 return err;
452 }
453 }
454 return 0;
455}
456
457static void kill_stream_urbs(struct ua101_stream *stream)
458{
459 unsigned int i;
460
461 for (i = 0; i < stream->queue_length; ++i)
462 usb_kill_urb(&stream->urbs[i]->urb);
463}
464
465static int enable_iso_interface(struct ua101 *ua, unsigned int intf_index)
466{
467 struct usb_host_interface *alts;
468
469 alts = ua->intf[intf_index]->cur_altsetting;
470 if (alts->desc.bAlternateSetting != 1) {
471 int err = usb_set_interface(ua->dev,
472 alts->desc.bInterfaceNumber, 1);
473 if (err < 0) {
474 dev_err(&ua->dev->dev,
475 "cannot initialize interface; error %d: %s\n",
476 err, usb_error_string(err));
477 return err;
478 }
479 }
480 return 0;
481}
482
483static void disable_iso_interface(struct ua101 *ua, unsigned int intf_index)
484{
485 struct usb_host_interface *alts;
486
487 alts = ua->intf[intf_index]->cur_altsetting;
488 if (alts->desc.bAlternateSetting != 0) {
489 int err = usb_set_interface(ua->dev,
490 alts->desc.bInterfaceNumber, 0);
491 if (err < 0 && !test_bit(DISCONNECTED, &ua->states))
492 dev_warn(&ua->dev->dev,
493 "interface reset failed; error %d: %s\n",
494 err, usb_error_string(err));
495 }
496}
497
498static void stop_usb_capture(struct ua101 *ua)
499{
500 clear_bit(USB_CAPTURE_RUNNING, &ua->states);
501
502 kill_stream_urbs(&ua->capture);
503
504 disable_iso_interface(ua, INTF_CAPTURE);
505}
506
507static int start_usb_capture(struct ua101 *ua)
508{
509 int err;
510
511 if (test_bit(DISCONNECTED, &ua->states))
512 return -ENODEV;
513
514 if (test_bit(USB_CAPTURE_RUNNING, &ua->states))
515 return 0;
516
517 kill_stream_urbs(&ua->capture);
518
519 err = enable_iso_interface(ua, INTF_CAPTURE);
520 if (err < 0)
521 return err;
522
523 clear_bit(CAPTURE_URB_COMPLETED, &ua->states);
524 ua->capture.urbs[0]->urb.complete = first_capture_urb_complete;
525 ua->rate_feedback_start = 0;
526 ua->rate_feedback_count = 0;
527
528 set_bit(USB_CAPTURE_RUNNING, &ua->states);
529 err = submit_stream_urbs(ua, &ua->capture);
530 if (err < 0)
531 stop_usb_capture(ua);
532 return err;
533}
534
535static void stop_usb_playback(struct ua101 *ua)
536{
537 clear_bit(USB_PLAYBACK_RUNNING, &ua->states);
538
539 kill_stream_urbs(&ua->playback);
540
541 tasklet_kill(&ua->playback_tasklet);
542
543 disable_iso_interface(ua, INTF_PLAYBACK);
544}
545
546static int start_usb_playback(struct ua101 *ua)
547{
548 unsigned int i, frames;
549 struct urb *urb;
550 int err = 0;
551
552 if (test_bit(DISCONNECTED, &ua->states))
553 return -ENODEV;
554
555 if (test_bit(USB_PLAYBACK_RUNNING, &ua->states))
556 return 0;
557
558 kill_stream_urbs(&ua->playback);
559 tasklet_kill(&ua->playback_tasklet);
560
561 err = enable_iso_interface(ua, INTF_PLAYBACK);
562 if (err < 0)
563 return err;
564
565 clear_bit(PLAYBACK_URB_COMPLETED, &ua->states);
566 ua->playback.urbs[0]->urb.complete =
567 first_playback_urb_complete;
568 spin_lock_irq(&ua->lock);
569 INIT_LIST_HEAD(&ua->ready_playback_urbs);
570 spin_unlock_irq(&ua->lock);
571
572 /*
573 * We submit the initial URBs all at once, so we have to wait for the
574 * packet size FIFO to be full.
575 */
576 wait_event(ua->rate_feedback_wait,
577 ua->rate_feedback_count >= ua->playback.queue_length ||
578 !test_bit(USB_CAPTURE_RUNNING, &ua->states) ||
579 test_bit(DISCONNECTED, &ua->states));
580 if (test_bit(DISCONNECTED, &ua->states)) {
581 stop_usb_playback(ua);
582 return -ENODEV;
583 }
584 if (!test_bit(USB_CAPTURE_RUNNING, &ua->states)) {
585 stop_usb_playback(ua);
586 return -EIO;
587 }
588
589 for (i = 0; i < ua->playback.queue_length; ++i) {
590 /* all initial URBs contain silence */
591 spin_lock_irq(&ua->lock);
592 frames = ua->rate_feedback[ua->rate_feedback_start];
593 add_with_wraparound(ua, &ua->rate_feedback_start, 1);
594 ua->rate_feedback_count--;
595 spin_unlock_irq(&ua->lock);
596 urb = &ua->playback.urbs[i]->urb;
597 urb->iso_frame_desc[0].length =
598 frames * ua->playback.frame_bytes;
599 memset(urb->transfer_buffer, 0,
600 urb->iso_frame_desc[0].length);
601 }
602
603 set_bit(USB_PLAYBACK_RUNNING, &ua->states);
604 err = submit_stream_urbs(ua, &ua->playback);
605 if (err < 0)
606 stop_usb_playback(ua);
607 return err;
608}
609
610static void abort_alsa_capture(struct ua101 *ua)
611{
612 if (test_bit(ALSA_CAPTURE_RUNNING, &ua->states))
613 snd_pcm_stop(ua->capture.substream, SNDRV_PCM_STATE_XRUN);
614}
615
616static void abort_alsa_playback(struct ua101 *ua)
617{
618 if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states))
619 snd_pcm_stop(ua->playback.substream, SNDRV_PCM_STATE_XRUN);
620}
621
622static int set_stream_hw(struct ua101 *ua, struct snd_pcm_substream *substream,
623 unsigned int channels)
624{
625 int err;
626
627 substream->runtime->hw.info =
628 SNDRV_PCM_INFO_MMAP |
629 SNDRV_PCM_INFO_MMAP_VALID |
630 SNDRV_PCM_INFO_BATCH |
631 SNDRV_PCM_INFO_INTERLEAVED |
632 SNDRV_PCM_INFO_BLOCK_TRANSFER |
633 SNDRV_PCM_INFO_FIFO_IN_FRAMES;
634 substream->runtime->hw.formats = ua->format_bit;
635 substream->runtime->hw.rates = snd_pcm_rate_to_rate_bit(ua->rate);
636 substream->runtime->hw.rate_min = ua->rate;
637 substream->runtime->hw.rate_max = ua->rate;
638 substream->runtime->hw.channels_min = channels;
639 substream->runtime->hw.channels_max = channels;
640 substream->runtime->hw.buffer_bytes_max = 45000 * 1024;
641 substream->runtime->hw.period_bytes_min = 1;
642 substream->runtime->hw.period_bytes_max = UINT_MAX;
643 substream->runtime->hw.periods_min = 2;
644 substream->runtime->hw.periods_max = UINT_MAX;
645 err = snd_pcm_hw_constraint_minmax(substream->runtime,
646 SNDRV_PCM_HW_PARAM_PERIOD_TIME,
647 1500000 / ua->packets_per_second,
648 8192000);
649 if (err < 0)
650 return err;
651 err = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 32, 24);
652 return err;
653}
654
655static int capture_pcm_open(struct snd_pcm_substream *substream)
656{
657 struct ua101 *ua = substream->private_data;
658 int err;
659
660 ua->capture.substream = substream;
661 err = set_stream_hw(ua, substream, ua->capture.channels);
662 if (err < 0)
663 return err;
664 substream->runtime->hw.fifo_size =
665 DIV_ROUND_CLOSEST(ua->rate, ua->packets_per_second);
666 substream->runtime->delay = substream->runtime->hw.fifo_size;
667
668 mutex_lock(&ua->mutex);
669 err = start_usb_capture(ua);
670 if (err >= 0)
671 set_bit(ALSA_CAPTURE_OPEN, &ua->states);
672 mutex_unlock(&ua->mutex);
673 return err;
674}
675
676static int playback_pcm_open(struct snd_pcm_substream *substream)
677{
678 struct ua101 *ua = substream->private_data;
679 int err;
680
681 ua->playback.substream = substream;
682 err = set_stream_hw(ua, substream, ua->playback.channels);
683 if (err < 0)
684 return err;
685 substream->runtime->hw.fifo_size =
686 DIV_ROUND_CLOSEST(ua->rate * ua->playback.queue_length,
687 ua->packets_per_second);
688
689 mutex_lock(&ua->mutex);
690 err = start_usb_capture(ua);
691 if (err < 0)
692 goto error;
693 err = start_usb_playback(ua);
694 if (err < 0) {
695 if (!test_bit(ALSA_CAPTURE_OPEN, &ua->states))
696 stop_usb_capture(ua);
697 goto error;
698 }
699 set_bit(ALSA_PLAYBACK_OPEN, &ua->states);
700error:
701 mutex_unlock(&ua->mutex);
702 return err;
703}
704
705static int capture_pcm_close(struct snd_pcm_substream *substream)
706{
707 struct ua101 *ua = substream->private_data;
708
709 mutex_lock(&ua->mutex);
710 clear_bit(ALSA_CAPTURE_OPEN, &ua->states);
711 if (!test_bit(ALSA_PLAYBACK_OPEN, &ua->states))
712 stop_usb_capture(ua);
713 mutex_unlock(&ua->mutex);
714 return 0;
715}
716
717static int playback_pcm_close(struct snd_pcm_substream *substream)
718{
719 struct ua101 *ua = substream->private_data;
720
721 mutex_lock(&ua->mutex);
722 stop_usb_playback(ua);
723 clear_bit(ALSA_PLAYBACK_OPEN, &ua->states);
724 if (!test_bit(ALSA_CAPTURE_OPEN, &ua->states))
725 stop_usb_capture(ua);
726 mutex_unlock(&ua->mutex);
727 return 0;
728}
729
730static int capture_pcm_hw_params(struct snd_pcm_substream *substream,
731 struct snd_pcm_hw_params *hw_params)
732{
733 struct ua101 *ua = substream->private_data;
734 int err;
735
736 mutex_lock(&ua->mutex);
737 err = start_usb_capture(ua);
738 mutex_unlock(&ua->mutex);
739 if (err < 0)
740 return err;
741
742 return snd_pcm_lib_alloc_vmalloc_buffer(substream,
743 params_buffer_bytes(hw_params));
744}
745
746static int playback_pcm_hw_params(struct snd_pcm_substream *substream,
747 struct snd_pcm_hw_params *hw_params)
748{
749 struct ua101 *ua = substream->private_data;
750 int err;
751
752 mutex_lock(&ua->mutex);
753 err = start_usb_capture(ua);
754 if (err >= 0)
755 err = start_usb_playback(ua);
756 mutex_unlock(&ua->mutex);
757 if (err < 0)
758 return err;
759
760 return snd_pcm_lib_alloc_vmalloc_buffer(substream,
761 params_buffer_bytes(hw_params));
762}
763
764static int ua101_pcm_hw_free(struct snd_pcm_substream *substream)
765{
766 return snd_pcm_lib_free_vmalloc_buffer(substream);
767}
768
769static int capture_pcm_prepare(struct snd_pcm_substream *substream)
770{
771 struct ua101 *ua = substream->private_data;
772 int err;
773
774 mutex_lock(&ua->mutex);
775 err = start_usb_capture(ua);
776 mutex_unlock(&ua->mutex);
777 if (err < 0)
778 return err;
779
780 /*
781 * The EHCI driver schedules the first packet of an iso stream at 10 ms
782 * in the future, i.e., no data is actually captured for that long.
783 * Take the wait here so that the stream is known to be actually
784 * running when the start trigger has been called.
785 */
786 wait_event(ua->alsa_capture_wait,
787 test_bit(CAPTURE_URB_COMPLETED, &ua->states) ||
788 !test_bit(USB_CAPTURE_RUNNING, &ua->states));
789 if (test_bit(DISCONNECTED, &ua->states))
790 return -ENODEV;
791 if (!test_bit(USB_CAPTURE_RUNNING, &ua->states))
792 return -EIO;
793
794 ua->capture.period_pos = 0;
795 ua->capture.buffer_pos = 0;
796 return 0;
797}
798
799static int playback_pcm_prepare(struct snd_pcm_substream *substream)
800{
801 struct ua101 *ua = substream->private_data;
802 int err;
803
804 mutex_lock(&ua->mutex);
805 err = start_usb_capture(ua);
806 if (err >= 0)
807 err = start_usb_playback(ua);
808 mutex_unlock(&ua->mutex);
809 if (err < 0)
810 return err;
811
812 /* see the comment in capture_pcm_prepare() */
813 wait_event(ua->alsa_playback_wait,
814 test_bit(PLAYBACK_URB_COMPLETED, &ua->states) ||
815 !test_bit(USB_PLAYBACK_RUNNING, &ua->states));
816 if (test_bit(DISCONNECTED, &ua->states))
817 return -ENODEV;
818 if (!test_bit(USB_PLAYBACK_RUNNING, &ua->states))
819 return -EIO;
820
821 substream->runtime->delay = 0;
822 ua->playback.period_pos = 0;
823 ua->playback.buffer_pos = 0;
824 return 0;
825}
826
827static int capture_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
828{
829 struct ua101 *ua = substream->private_data;
830
831 switch (cmd) {
832 case SNDRV_PCM_TRIGGER_START:
833 if (!test_bit(USB_CAPTURE_RUNNING, &ua->states))
834 return -EIO;
835 set_bit(ALSA_CAPTURE_RUNNING, &ua->states);
836 return 0;
837 case SNDRV_PCM_TRIGGER_STOP:
838 clear_bit(ALSA_CAPTURE_RUNNING, &ua->states);
839 return 0;
840 default:
841 return -EINVAL;
842 }
843}
844
845static int playback_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
846{
847 struct ua101 *ua = substream->private_data;
848
849 switch (cmd) {
850 case SNDRV_PCM_TRIGGER_START:
851 if (!test_bit(USB_PLAYBACK_RUNNING, &ua->states))
852 return -EIO;
853 set_bit(ALSA_PLAYBACK_RUNNING, &ua->states);
854 return 0;
855 case SNDRV_PCM_TRIGGER_STOP:
856 clear_bit(ALSA_PLAYBACK_RUNNING, &ua->states);
857 return 0;
858 default:
859 return -EINVAL;
860 }
861}
862
863static inline snd_pcm_uframes_t ua101_pcm_pointer(struct ua101 *ua,
864 struct ua101_stream *stream)
865{
866 unsigned long flags;
867 unsigned int pos;
868
869 spin_lock_irqsave(&ua->lock, flags);
870 pos = stream->buffer_pos;
871 spin_unlock_irqrestore(&ua->lock, flags);
872 return pos;
873}
874
875static snd_pcm_uframes_t capture_pcm_pointer(struct snd_pcm_substream *subs)
876{
877 struct ua101 *ua = subs->private_data;
878
879 return ua101_pcm_pointer(ua, &ua->capture);
880}
881
882static snd_pcm_uframes_t playback_pcm_pointer(struct snd_pcm_substream *subs)
883{
884 struct ua101 *ua = subs->private_data;
885
886 return ua101_pcm_pointer(ua, &ua->playback);
887}
888
889static struct snd_pcm_ops capture_pcm_ops = {
890 .open = capture_pcm_open,
891 .close = capture_pcm_close,
892 .ioctl = snd_pcm_lib_ioctl,
893 .hw_params = capture_pcm_hw_params,
894 .hw_free = ua101_pcm_hw_free,
895 .prepare = capture_pcm_prepare,
896 .trigger = capture_pcm_trigger,
897 .pointer = capture_pcm_pointer,
898 .page = snd_pcm_lib_get_vmalloc_page,
899 .mmap = snd_pcm_lib_mmap_vmalloc,
900};
901
902static struct snd_pcm_ops playback_pcm_ops = {
903 .open = playback_pcm_open,
904 .close = playback_pcm_close,
905 .ioctl = snd_pcm_lib_ioctl,
906 .hw_params = playback_pcm_hw_params,
907 .hw_free = ua101_pcm_hw_free,
908 .prepare = playback_pcm_prepare,
909 .trigger = playback_pcm_trigger,
910 .pointer = playback_pcm_pointer,
911 .page = snd_pcm_lib_get_vmalloc_page,
912 .mmap = snd_pcm_lib_mmap_vmalloc,
913};
914
915static const struct uac_format_type_i_discrete_descriptor *
916find_format_descriptor(struct usb_interface *interface)
917{
918 struct usb_host_interface *alt;
919 u8 *extra;
920 int extralen;
921
922 if (interface->num_altsetting != 2) {
923 dev_err(&interface->dev, "invalid num_altsetting\n");
924 return NULL;
925 }
926
927 alt = &interface->altsetting[0];
928 if (alt->desc.bNumEndpoints != 0) {
929 dev_err(&interface->dev, "invalid bNumEndpoints\n");
930 return NULL;
931 }
932
933 alt = &interface->altsetting[1];
934 if (alt->desc.bNumEndpoints != 1) {
935 dev_err(&interface->dev, "invalid bNumEndpoints\n");
936 return NULL;
937 }
938
939 extra = alt->extra;
940 extralen = alt->extralen;
941 while (extralen >= sizeof(struct usb_descriptor_header)) {
942 struct uac_format_type_i_discrete_descriptor *desc;
943
944 desc = (struct uac_format_type_i_discrete_descriptor *)extra;
945 if (desc->bLength > extralen) {
946 dev_err(&interface->dev, "descriptor overflow\n");
947 return NULL;
948 }
949 if (desc->bLength == UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1) &&
950 desc->bDescriptorType == USB_DT_CS_INTERFACE &&
951 desc->bDescriptorSubtype == UAC_FORMAT_TYPE) {
952 if (desc->bFormatType != UAC_FORMAT_TYPE_I_PCM ||
953 desc->bSamFreqType != 1) {
954 dev_err(&interface->dev,
955 "invalid format type\n");
956 return NULL;
957 }
958 return desc;
959 }
960 extralen -= desc->bLength;
961 extra += desc->bLength;
962 }
963 dev_err(&interface->dev, "sample format descriptor not found\n");
964 return NULL;
965}
966
967static int detect_usb_format(struct ua101 *ua)
968{
969 const struct uac_format_type_i_discrete_descriptor *fmt_capture;
970 const struct uac_format_type_i_discrete_descriptor *fmt_playback;
971 const struct usb_endpoint_descriptor *epd;
972 unsigned int rate2;
973
974 fmt_capture = find_format_descriptor(ua->intf[INTF_CAPTURE]);
975 fmt_playback = find_format_descriptor(ua->intf[INTF_PLAYBACK]);
976 if (!fmt_capture || !fmt_playback)
977 return -ENXIO;
978
979 switch (fmt_capture->bSubframeSize) {
980 case 3:
981 ua->format_bit = SNDRV_PCM_FMTBIT_S24_3LE;
982 break;
983 case 4:
984 ua->format_bit = SNDRV_PCM_FMTBIT_S32_LE;
985 break;
986 default:
987 dev_err(&ua->dev->dev, "sample width is not 24 or 32 bits\n");
988 return -ENXIO;
989 }
990 if (fmt_capture->bSubframeSize != fmt_playback->bSubframeSize) {
991 dev_err(&ua->dev->dev,
992 "playback/capture sample widths do not match\n");
993 return -ENXIO;
994 }
995
996 if (fmt_capture->bBitResolution != 24 ||
997 fmt_playback->bBitResolution != 24) {
998 dev_err(&ua->dev->dev, "sample width is not 24 bits\n");
999 return -ENXIO;
1000 }
1001
1002 ua->rate = combine_triple(fmt_capture->tSamFreq[0]);
1003 rate2 = combine_triple(fmt_playback->tSamFreq[0]);
1004 if (ua->rate != rate2) {
1005 dev_err(&ua->dev->dev,
1006 "playback/capture rates do not match: %u/%u\n",
1007 rate2, ua->rate);
1008 return -ENXIO;
1009 }
1010
1011 switch (ua->dev->speed) {
1012 case USB_SPEED_FULL:
1013 ua->packets_per_second = 1000;
1014 break;
1015 case USB_SPEED_HIGH:
1016 ua->packets_per_second = 8000;
1017 break;
1018 default:
1019 dev_err(&ua->dev->dev, "unknown device speed\n");
1020 return -ENXIO;
1021 }
1022
1023 ua->capture.channels = fmt_capture->bNrChannels;
1024 ua->playback.channels = fmt_playback->bNrChannels;
1025 ua->capture.frame_bytes =
1026 fmt_capture->bSubframeSize * ua->capture.channels;
1027 ua->playback.frame_bytes =
1028 fmt_playback->bSubframeSize * ua->playback.channels;
1029
1030 epd = &ua->intf[INTF_CAPTURE]->altsetting[1].endpoint[0].desc;
1031 if (!usb_endpoint_is_isoc_in(epd)) {
1032 dev_err(&ua->dev->dev, "invalid capture endpoint\n");
1033 return -ENXIO;
1034 }
1035 ua->capture.usb_pipe = usb_rcvisocpipe(ua->dev, usb_endpoint_num(epd));
1036 ua->capture.max_packet_bytes = le16_to_cpu(epd->wMaxPacketSize);
1037
1038 epd = &ua->intf[INTF_PLAYBACK]->altsetting[1].endpoint[0].desc;
1039 if (!usb_endpoint_is_isoc_out(epd)) {
1040 dev_err(&ua->dev->dev, "invalid playback endpoint\n");
1041 return -ENXIO;
1042 }
1043 ua->playback.usb_pipe = usb_sndisocpipe(ua->dev, usb_endpoint_num(epd));
1044 ua->playback.max_packet_bytes = le16_to_cpu(epd->wMaxPacketSize);
1045 return 0;
1046}
1047
1048static int alloc_stream_buffers(struct ua101 *ua, struct ua101_stream *stream)
1049{
1050 unsigned int remaining_packets, packets, packets_per_page, i;
1051 size_t size;
1052
1053 stream->queue_length = queue_length;
1054 stream->queue_length = max(stream->queue_length,
1055 (unsigned int)MIN_QUEUE_LENGTH);
1056 stream->queue_length = min(stream->queue_length,
1057 (unsigned int)MAX_QUEUE_LENGTH);
1058
1059 /*
1060 * The cache pool sizes used by usb_alloc_coherent() (128, 512, 2048) are
1061 * quite bad when used with the packet sizes of this device (e.g. 280,
1062 * 520, 624). Therefore, we allocate and subdivide entire pages, using
1063 * a smaller buffer only for the last chunk.
1064 */
1065 remaining_packets = stream->queue_length;
1066 packets_per_page = PAGE_SIZE / stream->max_packet_bytes;
1067 for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i) {
1068 packets = min(remaining_packets, packets_per_page);
1069 size = packets * stream->max_packet_bytes;
1070 stream->buffers[i].addr =
1071 usb_alloc_coherent(ua->dev, size, GFP_KERNEL,
1072 &stream->buffers[i].dma);
1073 if (!stream->buffers[i].addr)
1074 return -ENOMEM;
1075 stream->buffers[i].size = size;
1076 remaining_packets -= packets;
1077 if (!remaining_packets)
1078 break;
1079 }
1080 if (remaining_packets) {
1081 dev_err(&ua->dev->dev, "too many packets\n");
1082 return -ENXIO;
1083 }
1084 return 0;
1085}
1086
1087static void free_stream_buffers(struct ua101 *ua, struct ua101_stream *stream)
1088{
1089 unsigned int i;
1090
1091 for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i)
1092 usb_free_coherent(ua->dev,
1093 stream->buffers[i].size,
1094 stream->buffers[i].addr,
1095 stream->buffers[i].dma);
1096}
1097
1098static int alloc_stream_urbs(struct ua101 *ua, struct ua101_stream *stream,
1099 void (*urb_complete)(struct urb *))
1100{
1101 unsigned max_packet_size = stream->max_packet_bytes;
1102 struct ua101_urb *urb;
1103 unsigned int b, u = 0;
1104
1105 for (b = 0; b < ARRAY_SIZE(stream->buffers); ++b) {
1106 unsigned int size = stream->buffers[b].size;
1107 u8 *addr = stream->buffers[b].addr;
1108 dma_addr_t dma = stream->buffers[b].dma;
1109
1110 while (size >= max_packet_size) {
1111 if (u >= stream->queue_length)
1112 goto bufsize_error;
1113 urb = kmalloc(sizeof(*urb), GFP_KERNEL);
1114 if (!urb)
1115 return -ENOMEM;
1116 usb_init_urb(&urb->urb);
1117 urb->urb.dev = ua->dev;
1118 urb->urb.pipe = stream->usb_pipe;
1119 urb->urb.transfer_flags = URB_ISO_ASAP |
1120 URB_NO_TRANSFER_DMA_MAP;
1121 urb->urb.transfer_buffer = addr;
1122 urb->urb.transfer_dma = dma;
1123 urb->urb.transfer_buffer_length = max_packet_size;
1124 urb->urb.number_of_packets = 1;
1125 urb->urb.interval = 1;
1126 urb->urb.context = ua;
1127 urb->urb.complete = urb_complete;
1128 urb->urb.iso_frame_desc[0].offset = 0;
1129 urb->urb.iso_frame_desc[0].length = max_packet_size;
1130 stream->urbs[u++] = urb;
1131 size -= max_packet_size;
1132 addr += max_packet_size;
1133 dma += max_packet_size;
1134 }
1135 }
1136 if (u == stream->queue_length)
1137 return 0;
1138bufsize_error:
1139 dev_err(&ua->dev->dev, "internal buffer size error\n");
1140 return -ENXIO;
1141}
1142
1143static void free_stream_urbs(struct ua101_stream *stream)
1144{
1145 unsigned int i;
1146
1147 for (i = 0; i < stream->queue_length; ++i)
1148 kfree(stream->urbs[i]);
1149}
1150
1151static void free_usb_related_resources(struct ua101 *ua,
1152 struct usb_interface *interface)
1153{
1154 unsigned int i;
1155
1156 free_stream_urbs(&ua->capture);
1157 free_stream_urbs(&ua->playback);
1158 free_stream_buffers(ua, &ua->capture);
1159 free_stream_buffers(ua, &ua->playback);
1160
1161 for (i = 0; i < ARRAY_SIZE(ua->intf); ++i)
1162 if (ua->intf[i]) {
1163 usb_set_intfdata(ua->intf[i], NULL);
1164 if (ua->intf[i] != interface)
1165 usb_driver_release_interface(&ua101_driver,
1166 ua->intf[i]);
1167 }
1168}
1169
1170static void ua101_card_free(struct snd_card *card)
1171{
1172 struct ua101 *ua = card->private_data;
1173
1174 mutex_destroy(&ua->mutex);
1175}
1176
1177static int ua101_probe(struct usb_interface *interface,
1178 const struct usb_device_id *usb_id)
1179{
1180 static const struct snd_usb_midi_endpoint_info midi_ep = {
1181 .out_cables = 0x0001,
1182 .in_cables = 0x0001
1183 };
1184 static const struct snd_usb_audio_quirk midi_quirk = {
1185 .type = QUIRK_MIDI_FIXED_ENDPOINT,
1186 .data = &midi_ep
1187 };
1188 static const int intf_numbers[2][3] = {
1189 { /* UA-101 */
1190 [INTF_PLAYBACK] = 0,
1191 [INTF_CAPTURE] = 1,
1192 [INTF_MIDI] = 2,
1193 },
1194 { /* UA-1000 */
1195 [INTF_CAPTURE] = 1,
1196 [INTF_PLAYBACK] = 2,
1197 [INTF_MIDI] = 3,
1198 },
1199 };
1200 struct snd_card *card;
1201 struct ua101 *ua;
1202 unsigned int card_index, i;
1203 int is_ua1000;
1204 const char *name;
1205 char usb_path[32];
1206 int err;
1207
1208 is_ua1000 = usb_id->idProduct == 0x0044;
1209
1210 if (interface->altsetting->desc.bInterfaceNumber !=
1211 intf_numbers[is_ua1000][0])
1212 return -ENODEV;
1213
1214 mutex_lock(&devices_mutex);
1215
1216 for (card_index = 0; card_index < SNDRV_CARDS; ++card_index)
1217 if (enable[card_index] && !(devices_used & (1 << card_index)))
1218 break;
1219 if (card_index >= SNDRV_CARDS) {
1220 mutex_unlock(&devices_mutex);
1221 return -ENOENT;
1222 }
1223 err = snd_card_create(index[card_index], id[card_index], THIS_MODULE,
1224 sizeof(*ua), &card);
1225 if (err < 0) {
1226 mutex_unlock(&devices_mutex);
1227 return err;
1228 }
1229 card->private_free = ua101_card_free;
1230 ua = card->private_data;
1231 ua->dev = interface_to_usbdev(interface);
1232 ua->card = card;
1233 ua->card_index = card_index;
1234 INIT_LIST_HEAD(&ua->midi_list);
1235 spin_lock_init(&ua->lock);
1236 mutex_init(&ua->mutex);
1237 INIT_LIST_HEAD(&ua->ready_playback_urbs);
1238 tasklet_init(&ua->playback_tasklet,
1239 playback_tasklet, (unsigned long)ua);
1240 init_waitqueue_head(&ua->alsa_capture_wait);
1241 init_waitqueue_head(&ua->rate_feedback_wait);
1242 init_waitqueue_head(&ua->alsa_playback_wait);
1243
1244 ua->intf[0] = interface;
1245 for (i = 1; i < ARRAY_SIZE(ua->intf); ++i) {
1246 ua->intf[i] = usb_ifnum_to_if(ua->dev,
1247 intf_numbers[is_ua1000][i]);
1248 if (!ua->intf[i]) {
1249 dev_err(&ua->dev->dev, "interface %u not found\n",
1250 intf_numbers[is_ua1000][i]);
1251 err = -ENXIO;
1252 goto probe_error;
1253 }
1254 err = usb_driver_claim_interface(&ua101_driver,
1255 ua->intf[i], ua);
1256 if (err < 0) {
1257 ua->intf[i] = NULL;
1258 err = -EBUSY;
1259 goto probe_error;
1260 }
1261 }
1262
1263 snd_card_set_dev(card, &interface->dev);
1264
1265 err = detect_usb_format(ua);
1266 if (err < 0)
1267 goto probe_error;
1268
1269 name = usb_id->idProduct == 0x0044 ? "UA-1000" : "UA-101";
1270 strcpy(card->driver, "UA-101");
1271 strcpy(card->shortname, name);
1272 usb_make_path(ua->dev, usb_path, sizeof(usb_path));
1273 snprintf(ua->card->longname, sizeof(ua->card->longname),
1274 "EDIROL %s (serial %s), %u Hz at %s, %s speed", name,
1275 ua->dev->serial ? ua->dev->serial : "?", ua->rate, usb_path,
1276 ua->dev->speed == USB_SPEED_HIGH ? "high" : "full");
1277
1278 err = alloc_stream_buffers(ua, &ua->capture);
1279 if (err < 0)
1280 goto probe_error;
1281 err = alloc_stream_buffers(ua, &ua->playback);
1282 if (err < 0)
1283 goto probe_error;
1284
1285 err = alloc_stream_urbs(ua, &ua->capture, capture_urb_complete);
1286 if (err < 0)
1287 goto probe_error;
1288 err = alloc_stream_urbs(ua, &ua->playback, playback_urb_complete);
1289 if (err < 0)
1290 goto probe_error;
1291
1292 err = snd_pcm_new(card, name, 0, 1, 1, &ua->pcm);
1293 if (err < 0)
1294 goto probe_error;
1295 ua->pcm->private_data = ua;
1296 strcpy(ua->pcm->name, name);
1297 snd_pcm_set_ops(ua->pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_pcm_ops);
1298 snd_pcm_set_ops(ua->pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_pcm_ops);
1299
1300 err = snd_usbmidi_create(card, ua->intf[INTF_MIDI],
1301 &ua->midi_list, &midi_quirk);
1302 if (err < 0)
1303 goto probe_error;
1304
1305 err = snd_card_register(card);
1306 if (err < 0)
1307 goto probe_error;
1308
1309 usb_set_intfdata(interface, ua);
1310 devices_used |= 1 << card_index;
1311
1312 mutex_unlock(&devices_mutex);
1313 return 0;
1314
1315probe_error:
1316 free_usb_related_resources(ua, interface);
1317 snd_card_free(card);
1318 mutex_unlock(&devices_mutex);
1319 return err;
1320}
1321
1322static void ua101_disconnect(struct usb_interface *interface)
1323{
1324 struct ua101 *ua = usb_get_intfdata(interface);
1325 struct list_head *midi;
1326
1327 if (!ua)
1328 return;
1329
1330 mutex_lock(&devices_mutex);
1331
1332 set_bit(DISCONNECTED, &ua->states);
1333 wake_up(&ua->rate_feedback_wait);
1334
1335 /* make sure that userspace cannot create new requests */
1336 snd_card_disconnect(ua->card);
1337
1338 /* make sure that there are no pending USB requests */
1339 __list_for_each(midi, &ua->midi_list)
1340 snd_usbmidi_disconnect(midi);
1341 abort_alsa_playback(ua);
1342 abort_alsa_capture(ua);
1343 mutex_lock(&ua->mutex);
1344 stop_usb_playback(ua);
1345 stop_usb_capture(ua);
1346 mutex_unlock(&ua->mutex);
1347
1348 free_usb_related_resources(ua, interface);
1349
1350 devices_used &= ~(1 << ua->card_index);
1351
1352 snd_card_free_when_closed(ua->card);
1353
1354 mutex_unlock(&devices_mutex);
1355}
1356
1357static struct usb_device_id ua101_ids[] = {
1358 { USB_DEVICE(0x0582, 0x0044) }, /* UA-1000 high speed */
1359 { USB_DEVICE(0x0582, 0x007d) }, /* UA-101 high speed */
1360 { USB_DEVICE(0x0582, 0x008d) }, /* UA-101 full speed */
1361 { }
1362};
1363MODULE_DEVICE_TABLE(usb, ua101_ids);
1364
1365static struct usb_driver ua101_driver = {
1366 .name = "snd-ua101",
1367 .id_table = ua101_ids,
1368 .probe = ua101_probe,
1369 .disconnect = ua101_disconnect,
1370#if 0
1371 .suspend = ua101_suspend,
1372 .resume = ua101_resume,
1373#endif
1374};
1375
1376static int __init alsa_card_ua101_init(void)
1377{
1378 return usb_register(&ua101_driver);
1379}
1380
1381static void __exit alsa_card_ua101_exit(void)
1382{
1383 usb_deregister(&ua101_driver);
1384 mutex_destroy(&devices_mutex);
1385}
1386
1387module_init(alsa_card_ua101_init);
1388module_exit(alsa_card_ua101_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-16 20:19:11 -0500