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Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes
[deliverable/linux.git] / sound / usb / misc / ua101.c
CommitLineData
63978ab3 1/*
e584bc3c 2 * Edirol UA-101/UA-1000 driver
63978ab3
CL		 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>
63978ab3
CL		 22#include <sound/core.h>
23#include <sound/initval.h>
24#include <sound/pcm.h>
25#include <sound/pcm_params.h>
bc700ab1 26#include "../usbaudio.h"
e5779998 27#include "../midi.h"
63978ab3 28
e584bc3c 29MODULE_DESCRIPTION("Edirol UA-101/1000 driver");
63978ab3
CL		 30MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
31MODULE_LICENSE("GPL v2");
e584bc3c 32MODULE_SUPPORTED_DEVICE("{{Edirol,UA-101},{Edirol,UA-1000}}");
63978ab3 33
63978ab3
CL		 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
997ea58e 45 * that usb_alloc_coherent() uses.
63978ab3
CL		 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;
a67ff6a5 55static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
63978ab3
CL		 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;
63978ab3
CL		 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
63978ab3
CL		 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
63978ab3
CL		 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)
862a6244
CL		 462 if (stream->urbs[i])
463 usb_kill_urb(&stream->urbs[i]->urb);
63978ab3
CL		 464}
465
466static int enable_iso_interface(struct ua101 *ua, unsigned int intf_index)
467{
468 struct usb_host_interface *alts;
469
470 alts = ua->intf[intf_index]->cur_altsetting;
471 if (alts->desc.bAlternateSetting != 1) {
472 int err = usb_set_interface(ua->dev,
473 alts->desc.bInterfaceNumber, 1);
474 if (err < 0) {
475 dev_err(&ua->dev->dev,
476 "cannot initialize interface; error %d: %s\n",
477 err, usb_error_string(err));
478 return err;
479 }
480 }
481 return 0;
482}
483
484static void disable_iso_interface(struct ua101 *ua, unsigned int intf_index)
485{
486 struct usb_host_interface *alts;
487
862a6244
CL		 488 if (!ua->intf[intf_index])
489 return;
490
63978ab3
CL		 491 alts = ua->intf[intf_index]->cur_altsetting;
492 if (alts->desc.bAlternateSetting != 0) {
493 int err = usb_set_interface(ua->dev,
494 alts->desc.bInterfaceNumber, 0);
495 if (err < 0 && !test_bit(DISCONNECTED, &ua->states))
496 dev_warn(&ua->dev->dev,
497 "interface reset failed; error %d: %s\n",
498 err, usb_error_string(err));
499 }
500}
501
502static void stop_usb_capture(struct ua101 *ua)
503{
504 clear_bit(USB_CAPTURE_RUNNING, &ua->states);
505
506 kill_stream_urbs(&ua->capture);
507
508 disable_iso_interface(ua, INTF_CAPTURE);
509}
510
511static int start_usb_capture(struct ua101 *ua)
512{
513 int err;
514
515 if (test_bit(DISCONNECTED, &ua->states))
516 return -ENODEV;
517
518 if (test_bit(USB_CAPTURE_RUNNING, &ua->states))
519 return 0;
520
521 kill_stream_urbs(&ua->capture);
522
523 err = enable_iso_interface(ua, INTF_CAPTURE);
524 if (err < 0)
525 return err;
526
527 clear_bit(CAPTURE_URB_COMPLETED, &ua->states);
528 ua->capture.urbs[0]->urb.complete = first_capture_urb_complete;
529 ua->rate_feedback_start = 0;
530 ua->rate_feedback_count = 0;
531
532 set_bit(USB_CAPTURE_RUNNING, &ua->states);
533 err = submit_stream_urbs(ua, &ua->capture);
534 if (err < 0)
535 stop_usb_capture(ua);
536 return err;
537}
538
539static void stop_usb_playback(struct ua101 *ua)
540{
541 clear_bit(USB_PLAYBACK_RUNNING, &ua->states);
542
543 kill_stream_urbs(&ua->playback);
544
545 tasklet_kill(&ua->playback_tasklet);
546
547 disable_iso_interface(ua, INTF_PLAYBACK);
548}
549
550static int start_usb_playback(struct ua101 *ua)
551{
552 unsigned int i, frames;
553 struct urb *urb;
554 int err = 0;
555
556 if (test_bit(DISCONNECTED, &ua->states))
557 return -ENODEV;
558
559 if (test_bit(USB_PLAYBACK_RUNNING, &ua->states))
560 return 0;
561
562 kill_stream_urbs(&ua->playback);
563 tasklet_kill(&ua->playback_tasklet);
564
565 err = enable_iso_interface(ua, INTF_PLAYBACK);
566 if (err < 0)
567 return err;
568
569 clear_bit(PLAYBACK_URB_COMPLETED, &ua->states);
570 ua->playback.urbs[0]->urb.complete =
571 first_playback_urb_complete;
572 spin_lock_irq(&ua->lock);
573 INIT_LIST_HEAD(&ua->ready_playback_urbs);
574 spin_unlock_irq(&ua->lock);
575
576 /*
577 * We submit the initial URBs all at once, so we have to wait for the
578 * packet size FIFO to be full.
579 */
580 wait_event(ua->rate_feedback_wait,
581 ua->rate_feedback_count >= ua->playback.queue_length ||
582 !test_bit(USB_CAPTURE_RUNNING, &ua->states) ||
583 test_bit(DISCONNECTED, &ua->states));
584 if (test_bit(DISCONNECTED, &ua->states)) {
585 stop_usb_playback(ua);
586 return -ENODEV;
587 }
588 if (!test_bit(USB_CAPTURE_RUNNING, &ua->states)) {
589 stop_usb_playback(ua);
590 return -EIO;
591 }
592
593 for (i = 0; i < ua->playback.queue_length; ++i) {
594 /* all initial URBs contain silence */
595 spin_lock_irq(&ua->lock);
596 frames = ua->rate_feedback[ua->rate_feedback_start];
597 add_with_wraparound(ua, &ua->rate_feedback_start, 1);
598 ua->rate_feedback_count--;
599 spin_unlock_irq(&ua->lock);
600 urb = &ua->playback.urbs[i]->urb;
601 urb->iso_frame_desc[0].length =
602 frames * ua->playback.frame_bytes;
603 memset(urb->transfer_buffer, 0,
604 urb->iso_frame_desc[0].length);
605 }
606
607 set_bit(USB_PLAYBACK_RUNNING, &ua->states);
608 err = submit_stream_urbs(ua, &ua->playback);
609 if (err < 0)
610 stop_usb_playback(ua);
611 return err;
612}
613
614static void abort_alsa_capture(struct ua101 *ua)
615{
9538aa46
TI		 616 unsigned long flags;
617
618 if (test_bit(ALSA_CAPTURE_RUNNING, &ua->states)) {
619 snd_pcm_stream_lock_irqsave(ua->capture.substream, flags);
63978ab3 620 snd_pcm_stop(ua->capture.substream, SNDRV_PCM_STATE_XRUN);
9538aa46
TI		 621 snd_pcm_stream_unlock_irqrestore(ua->capture.substream, flags);
622 }
63978ab3
CL		 623}
624
625static void abort_alsa_playback(struct ua101 *ua)
626{
9538aa46
TI		 627 unsigned long flags;
628
629 if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states)) {
630 snd_pcm_stream_lock_irqsave(ua->playback.substream, flags);
63978ab3 631 snd_pcm_stop(ua->playback.substream, SNDRV_PCM_STATE_XRUN);
9538aa46
TI		 632 snd_pcm_stream_unlock_irqrestore(ua->playback.substream, flags);
633 }
63978ab3
CL		 634}
635
636static int set_stream_hw(struct ua101 *ua, struct snd_pcm_substream *substream,
637 unsigned int channels)
638{
639 int err;
640
641 substream->runtime->hw.info =
642 SNDRV_PCM_INFO_MMAP |
643 SNDRV_PCM_INFO_MMAP_VALID |
644 SNDRV_PCM_INFO_BATCH |
645 SNDRV_PCM_INFO_INTERLEAVED |
646 SNDRV_PCM_INFO_BLOCK_TRANSFER |
647 SNDRV_PCM_INFO_FIFO_IN_FRAMES;
648 substream->runtime->hw.formats = ua->format_bit;
649 substream->runtime->hw.rates = snd_pcm_rate_to_rate_bit(ua->rate);
650 substream->runtime->hw.rate_min = ua->rate;
651 substream->runtime->hw.rate_max = ua->rate;
652 substream->runtime->hw.channels_min = channels;
653 substream->runtime->hw.channels_max = channels;
654 substream->runtime->hw.buffer_bytes_max = 45000 * 1024;
655 substream->runtime->hw.period_bytes_min = 1;
656 substream->runtime->hw.period_bytes_max = UINT_MAX;
657 substream->runtime->hw.periods_min = 2;
658 substream->runtime->hw.periods_max = UINT_MAX;
659 err = snd_pcm_hw_constraint_minmax(substream->runtime,
660 SNDRV_PCM_HW_PARAM_PERIOD_TIME,
661 1500000 / ua->packets_per_second,
f4b1e98a 662 UINT_MAX);
63978ab3
CL		 663 if (err < 0)
664 return err;
665 err = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 32, 24);
666 return err;
667}
668
669static int capture_pcm_open(struct snd_pcm_substream *substream)
670{
671 struct ua101 *ua = substream->private_data;
672 int err;
673
674 ua->capture.substream = substream;
675 err = set_stream_hw(ua, substream, ua->capture.channels);
676 if (err < 0)
677 return err;
678 substream->runtime->hw.fifo_size =
679 DIV_ROUND_CLOSEST(ua->rate, ua->packets_per_second);
680 substream->runtime->delay = substream->runtime->hw.fifo_size;
681
682 mutex_lock(&ua->mutex);
683 err = start_usb_capture(ua);
684 if (err >= 0)
685 set_bit(ALSA_CAPTURE_OPEN, &ua->states);
686 mutex_unlock(&ua->mutex);
687 return err;
688}
689
690static int playback_pcm_open(struct snd_pcm_substream *substream)
691{
692 struct ua101 *ua = substream->private_data;
693 int err;
694
695 ua->playback.substream = substream;
696 err = set_stream_hw(ua, substream, ua->playback.channels);
697 if (err < 0)
698 return err;
699 substream->runtime->hw.fifo_size =
700 DIV_ROUND_CLOSEST(ua->rate * ua->playback.queue_length,
701 ua->packets_per_second);
702
703 mutex_lock(&ua->mutex);
704 err = start_usb_capture(ua);
705 if (err < 0)
706 goto error;
707 err = start_usb_playback(ua);
708 if (err < 0) {
709 if (!test_bit(ALSA_CAPTURE_OPEN, &ua->states))
710 stop_usb_capture(ua);
711 goto error;
712 }
713 set_bit(ALSA_PLAYBACK_OPEN, &ua->states);
714error:
715 mutex_unlock(&ua->mutex);
716 return err;
717}
718
719static int capture_pcm_close(struct snd_pcm_substream *substream)
720{
721 struct ua101 *ua = substream->private_data;
722
723 mutex_lock(&ua->mutex);
724 clear_bit(ALSA_CAPTURE_OPEN, &ua->states);
725 if (!test_bit(ALSA_PLAYBACK_OPEN, &ua->states))
726 stop_usb_capture(ua);
727 mutex_unlock(&ua->mutex);
728 return 0;
729}
730
731static int playback_pcm_close(struct snd_pcm_substream *substream)
732{
733 struct ua101 *ua = substream->private_data;
734
735 mutex_lock(&ua->mutex);
736 stop_usb_playback(ua);
737 clear_bit(ALSA_PLAYBACK_OPEN, &ua->states);
738 if (!test_bit(ALSA_CAPTURE_OPEN, &ua->states))
739 stop_usb_capture(ua);
740 mutex_unlock(&ua->mutex);
741 return 0;
742}
743
744static int capture_pcm_hw_params(struct snd_pcm_substream *substream,
745 struct snd_pcm_hw_params *hw_params)
746{
747 struct ua101 *ua = substream->private_data;
748 int err;
749
750 mutex_lock(&ua->mutex);
751 err = start_usb_capture(ua);
752 mutex_unlock(&ua->mutex);
753 if (err < 0)
754 return err;
755
5b4b2a41
CL		 756 return snd_pcm_lib_alloc_vmalloc_buffer(substream,
757 params_buffer_bytes(hw_params));
63978ab3
CL		 758}
759
760static int playback_pcm_hw_params(struct snd_pcm_substream *substream,
761 struct snd_pcm_hw_params *hw_params)
762{
763 struct ua101 *ua = substream->private_data;
764 int err;
765
766 mutex_lock(&ua->mutex);
767 err = start_usb_capture(ua);
768 if (err >= 0)
769 err = start_usb_playback(ua);
770 mutex_unlock(&ua->mutex);
771 if (err < 0)
772 return err;
773
5b4b2a41
CL		 774 return snd_pcm_lib_alloc_vmalloc_buffer(substream,
775 params_buffer_bytes(hw_params));
63978ab3
CL		 776}
777
778static int ua101_pcm_hw_free(struct snd_pcm_substream *substream)
779{
5b4b2a41 780 return snd_pcm_lib_free_vmalloc_buffer(substream);
63978ab3
CL		 781}
782
783static int capture_pcm_prepare(struct snd_pcm_substream *substream)
784{
785 struct ua101 *ua = substream->private_data;
786 int err;
787
788 mutex_lock(&ua->mutex);
789 err = start_usb_capture(ua);
790 mutex_unlock(&ua->mutex);
791 if (err < 0)
792 return err;
793
794 /*
795 * The EHCI driver schedules the first packet of an iso stream at 10 ms
796 * in the future, i.e., no data is actually captured for that long.
797 * Take the wait here so that the stream is known to be actually
798 * running when the start trigger has been called.
799 */
800 wait_event(ua->alsa_capture_wait,
801 test_bit(CAPTURE_URB_COMPLETED, &ua->states) ||
802 !test_bit(USB_CAPTURE_RUNNING, &ua->states));
803 if (test_bit(DISCONNECTED, &ua->states))
804 return -ENODEV;
805 if (!test_bit(USB_CAPTURE_RUNNING, &ua->states))
806 return -EIO;
807
808 ua->capture.period_pos = 0;
809 ua->capture.buffer_pos = 0;
810 return 0;
811}
812
813static int playback_pcm_prepare(struct snd_pcm_substream *substream)
814{
815 struct ua101 *ua = substream->private_data;
816 int err;
817
818 mutex_lock(&ua->mutex);
819 err = start_usb_capture(ua);
820 if (err >= 0)
821 err = start_usb_playback(ua);
822 mutex_unlock(&ua->mutex);
823 if (err < 0)
824 return err;
825
826 /* see the comment in capture_pcm_prepare() */
827 wait_event(ua->alsa_playback_wait,
828 test_bit(PLAYBACK_URB_COMPLETED, &ua->states) ||
829 !test_bit(USB_PLAYBACK_RUNNING, &ua->states));
830 if (test_bit(DISCONNECTED, &ua->states))
831 return -ENODEV;
832 if (!test_bit(USB_PLAYBACK_RUNNING, &ua->states))
833 return -EIO;
834
835 substream->runtime->delay = 0;
836 ua->playback.period_pos = 0;
837 ua->playback.buffer_pos = 0;
838 return 0;
839}
840
841static int capture_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
842{
843 struct ua101 *ua = substream->private_data;
844
845 switch (cmd) {
846 case SNDRV_PCM_TRIGGER_START:
847 if (!test_bit(USB_CAPTURE_RUNNING, &ua->states))
848 return -EIO;
849 set_bit(ALSA_CAPTURE_RUNNING, &ua->states);
850 return 0;
851 case SNDRV_PCM_TRIGGER_STOP:
852 clear_bit(ALSA_CAPTURE_RUNNING, &ua->states);
853 return 0;
854 default:
855 return -EINVAL;
856 }
857}
858
859static int playback_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
860{
861 struct ua101 *ua = substream->private_data;
862
863 switch (cmd) {
864 case SNDRV_PCM_TRIGGER_START:
865 if (!test_bit(USB_PLAYBACK_RUNNING, &ua->states))
866 return -EIO;
867 set_bit(ALSA_PLAYBACK_RUNNING, &ua->states);
868 return 0;
869 case SNDRV_PCM_TRIGGER_STOP:
870 clear_bit(ALSA_PLAYBACK_RUNNING, &ua->states);
871 return 0;
872 default:
873 return -EINVAL;
874 }
875}
876
877static inline snd_pcm_uframes_t ua101_pcm_pointer(struct ua101 *ua,
878 struct ua101_stream *stream)
879{
880 unsigned long flags;
881 unsigned int pos;
882
883 spin_lock_irqsave(&ua->lock, flags);
884 pos = stream->buffer_pos;
885 spin_unlock_irqrestore(&ua->lock, flags);
886 return pos;
887}
888
889static snd_pcm_uframes_t capture_pcm_pointer(struct snd_pcm_substream *subs)
890{
891 struct ua101 *ua = subs->private_data;
892
893 return ua101_pcm_pointer(ua, &ua->capture);
894}
895
896static snd_pcm_uframes_t playback_pcm_pointer(struct snd_pcm_substream *subs)
897{
898 struct ua101 *ua = subs->private_data;
899
900 return ua101_pcm_pointer(ua, &ua->playback);
901}
902
903static struct snd_pcm_ops capture_pcm_ops = {
904 .open = capture_pcm_open,
905 .close = capture_pcm_close,
906 .ioctl = snd_pcm_lib_ioctl,
907 .hw_params = capture_pcm_hw_params,
908 .hw_free = ua101_pcm_hw_free,
909 .prepare = capture_pcm_prepare,
910 .trigger = capture_pcm_trigger,
911 .pointer = capture_pcm_pointer,
5b4b2a41 912 .page = snd_pcm_lib_get_vmalloc_page,
c32d977b 913 .mmap = snd_pcm_lib_mmap_vmalloc,
63978ab3
CL		 914};
915
916static struct snd_pcm_ops playback_pcm_ops = {
917 .open = playback_pcm_open,
918 .close = playback_pcm_close,
919 .ioctl = snd_pcm_lib_ioctl,
920 .hw_params = playback_pcm_hw_params,
921 .hw_free = ua101_pcm_hw_free,
922 .prepare = playback_pcm_prepare,
923 .trigger = playback_pcm_trigger,
924 .pointer = playback_pcm_pointer,
5b4b2a41 925 .page = snd_pcm_lib_get_vmalloc_page,
c32d977b 926 .mmap = snd_pcm_lib_mmap_vmalloc,
63978ab3
CL		 927};
928
929static const struct uac_format_type_i_discrete_descriptor *
930find_format_descriptor(struct usb_interface *interface)
931{
932 struct usb_host_interface *alt;
933 u8 *extra;
934 int extralen;
935
936 if (interface->num_altsetting != 2) {
937 dev_err(&interface->dev, "invalid num_altsetting\n");
938 return NULL;
939 }
940
941 alt = &interface->altsetting[0];
942 if (alt->desc.bNumEndpoints != 0) {
943 dev_err(&interface->dev, "invalid bNumEndpoints\n");
944 return NULL;
945 }
946
947 alt = &interface->altsetting[1];
948 if (alt->desc.bNumEndpoints != 1) {
949 dev_err(&interface->dev, "invalid bNumEndpoints\n");
950 return NULL;
951 }
952
953 extra = alt->extra;
954 extralen = alt->extralen;
955 while (extralen >= sizeof(struct usb_descriptor_header)) {
956 struct uac_format_type_i_discrete_descriptor *desc;
957
958 desc = (struct uac_format_type_i_discrete_descriptor *)extra;
959 if (desc->bLength > extralen) {
960 dev_err(&interface->dev, "descriptor overflow\n");
961 return NULL;
962 }
963 if (desc->bLength == UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1) &&
964 desc->bDescriptorType == USB_DT_CS_INTERFACE &&
965 desc->bDescriptorSubtype == UAC_FORMAT_TYPE) {
966 if (desc->bFormatType != UAC_FORMAT_TYPE_I_PCM ||
967 desc->bSamFreqType != 1) {
968 dev_err(&interface->dev,
969 "invalid format type\n");
970 return NULL;
971 }
972 return desc;
973 }
974 extralen -= desc->bLength;
975 extra += desc->bLength;
976 }
977 dev_err(&interface->dev, "sample format descriptor not found\n");
978 return NULL;
979}
980
981static int detect_usb_format(struct ua101 *ua)
982{
983 const struct uac_format_type_i_discrete_descriptor *fmt_capture;
984 const struct uac_format_type_i_discrete_descriptor *fmt_playback;
985 const struct usb_endpoint_descriptor *epd;
986 unsigned int rate2;
987
988 fmt_capture = find_format_descriptor(ua->intf[INTF_CAPTURE]);
989 fmt_playback = find_format_descriptor(ua->intf[INTF_PLAYBACK]);
990 if (!fmt_capture || !fmt_playback)
991 return -ENXIO;
992
993 switch (fmt_capture->bSubframeSize) {
994 case 3:
995 ua->format_bit = SNDRV_PCM_FMTBIT_S24_3LE;
996 break;
997 case 4:
998 ua->format_bit = SNDRV_PCM_FMTBIT_S32_LE;
999 break;
1000 default:
1001 dev_err(&ua->dev->dev, "sample width is not 24 or 32 bits\n");
1002 return -ENXIO;
1003 }
1004 if (fmt_capture->bSubframeSize != fmt_playback->bSubframeSize) {
1005 dev_err(&ua->dev->dev,
1006 "playback/capture sample widths do not match\n");
1007 return -ENXIO;
1008 }
1009
1010 if (fmt_capture->bBitResolution != 24 ||
1011 fmt_playback->bBitResolution != 24) {
1012 dev_err(&ua->dev->dev, "sample width is not 24 bits\n");
1013 return -ENXIO;
1014 }
1015
1016 ua->rate = combine_triple(fmt_capture->tSamFreq[0]);
1017 rate2 = combine_triple(fmt_playback->tSamFreq[0]);
1018 if (ua->rate != rate2) {
1019 dev_err(&ua->dev->dev,
1020 "playback/capture rates do not match: %u/%u\n",
1021 rate2, ua->rate);
1022 return -ENXIO;
1023 }
1024
1025 switch (ua->dev->speed) {
1026 case USB_SPEED_FULL:
1027 ua->packets_per_second = 1000;
1028 break;
1029 case USB_SPEED_HIGH:
1030 ua->packets_per_second = 8000;
1031 break;
1032 default:
1033 dev_err(&ua->dev->dev, "unknown device speed\n");
1034 return -ENXIO;
1035 }
1036
1037 ua->capture.channels = fmt_capture->bNrChannels;
1038 ua->playback.channels = fmt_playback->bNrChannels;
1039 ua->capture.frame_bytes =
1040 fmt_capture->bSubframeSize * ua->capture.channels;
1041 ua->playback.frame_bytes =
1042 fmt_playback->bSubframeSize * ua->playback.channels;
1043
1044 epd = &ua->intf[INTF_CAPTURE]->altsetting[1].endpoint[0].desc;
1045 if (!usb_endpoint_is_isoc_in(epd)) {
1046 dev_err(&ua->dev->dev, "invalid capture endpoint\n");
1047 return -ENXIO;
1048 }
1049 ua->capture.usb_pipe = usb_rcvisocpipe(ua->dev, usb_endpoint_num(epd));
1050 ua->capture.max_packet_bytes = le16_to_cpu(epd->wMaxPacketSize);
1051
1052 epd = &ua->intf[INTF_PLAYBACK]->altsetting[1].endpoint[0].desc;
1053 if (!usb_endpoint_is_isoc_out(epd)) {
1054 dev_err(&ua->dev->dev, "invalid playback endpoint\n");
1055 return -ENXIO;
1056 }
1057 ua->playback.usb_pipe = usb_sndisocpipe(ua->dev, usb_endpoint_num(epd));
1058 ua->playback.max_packet_bytes = le16_to_cpu(epd->wMaxPacketSize);
1059 return 0;
1060}
1061
1062static int alloc_stream_buffers(struct ua101 *ua, struct ua101_stream *stream)
1063{
1064 unsigned int remaining_packets, packets, packets_per_page, i;
1065 size_t size;
1066
1067 stream->queue_length = queue_length;
1068 stream->queue_length = max(stream->queue_length,
1069 (unsigned int)MIN_QUEUE_LENGTH);
1070 stream->queue_length = min(stream->queue_length,
1071 (unsigned int)MAX_QUEUE_LENGTH);
1072
1073 /*
997ea58e 1074 * The cache pool sizes used by usb_alloc_coherent() (128, 512, 2048) are
63978ab3
CL		 1075 * quite bad when used with the packet sizes of this device (e.g. 280,
1076 * 520, 624). Therefore, we allocate and subdivide entire pages, using
1077 * a smaller buffer only for the last chunk.
1078 */
1079 remaining_packets = stream->queue_length;
1080 packets_per_page = PAGE_SIZE / stream->max_packet_bytes;
1081 for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i) {
1082 packets = min(remaining_packets, packets_per_page);
1083 size = packets * stream->max_packet_bytes;
1084 stream->buffers[i].addr =
997ea58e
DM		 1085 usb_alloc_coherent(ua->dev, size, GFP_KERNEL,
1086 &stream->buffers[i].dma);
63978ab3
CL		 1087 if (!stream->buffers[i].addr)
1088 return -ENOMEM;
1089 stream->buffers[i].size = size;
1090 remaining_packets -= packets;
1091 if (!remaining_packets)
1092 break;
1093 }
1094 if (remaining_packets) {
1095 dev_err(&ua->dev->dev, "too many packets\n");
1096 return -ENXIO;
1097 }
1098 return 0;
1099}
1100
1101static void free_stream_buffers(struct ua101 *ua, struct ua101_stream *stream)
1102{
1103 unsigned int i;
1104
1105 for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i)
997ea58e
DM		 1106 usb_free_coherent(ua->dev,
1107 stream->buffers[i].size,
1108 stream->buffers[i].addr,
1109 stream->buffers[i].dma);
63978ab3
CL		 1110}
1111
1112static int alloc_stream_urbs(struct ua101 *ua, struct ua101_stream *stream,
1113 void (*urb_complete)(struct urb *))
1114{
1115 unsigned max_packet_size = stream->max_packet_bytes;
1116 struct ua101_urb *urb;
1117 unsigned int b, u = 0;
1118
1119 for (b = 0; b < ARRAY_SIZE(stream->buffers); ++b) {
1120 unsigned int size = stream->buffers[b].size;
1121 u8 *addr = stream->buffers[b].addr;
1122 dma_addr_t dma = stream->buffers[b].dma;
1123
1124 while (size >= max_packet_size) {
1125 if (u >= stream->queue_length)
1126 goto bufsize_error;
1127 urb = kmalloc(sizeof(*urb), GFP_KERNEL);
1128 if (!urb)
1129 return -ENOMEM;
1130 usb_init_urb(&urb->urb);
1131 urb->urb.dev = ua->dev;
1132 urb->urb.pipe = stream->usb_pipe;
c75c5ab5 1133 urb->urb.transfer_flags = URB_NO_TRANSFER_DMA_MAP;
63978ab3
CL		 1134 urb->urb.transfer_buffer = addr;
1135 urb->urb.transfer_dma = dma;
1136 urb->urb.transfer_buffer_length = max_packet_size;
1137 urb->urb.number_of_packets = 1;
1138 urb->urb.interval = 1;
1139 urb->urb.context = ua;
1140 urb->urb.complete = urb_complete;
1141 urb->urb.iso_frame_desc[0].offset = 0;
1142 urb->urb.iso_frame_desc[0].length = max_packet_size;
1143 stream->urbs[u++] = urb;
1144 size -= max_packet_size;
1145 addr += max_packet_size;
1146 dma += max_packet_size;
1147 }
1148 }
1149 if (u == stream->queue_length)
1150 return 0;
1151bufsize_error:
1152 dev_err(&ua->dev->dev, "internal buffer size error\n");
1153 return -ENXIO;
1154}
1155
1156static void free_stream_urbs(struct ua101_stream *stream)
1157{
1158 unsigned int i;
1159
862a6244 1160 for (i = 0; i < stream->queue_length; ++i) {
63978ab3 1161 kfree(stream->urbs[i]);
862a6244
CL		 1162 stream->urbs[i] = NULL;
1163 }
63978ab3
CL		 1164}
1165
1166static void free_usb_related_resources(struct ua101 *ua,
1167 struct usb_interface *interface)
1168{
1169 unsigned int i;
862a6244 1170 struct usb_interface *intf;
63978ab3 1171
862a6244 1172 mutex_lock(&ua->mutex);
63978ab3
CL		 1173 free_stream_urbs(&ua->capture);
1174 free_stream_urbs(&ua->playback);
862a6244 1175 mutex_unlock(&ua->mutex);
63978ab3
CL		 1176 free_stream_buffers(ua, &ua->capture);
1177 free_stream_buffers(ua, &ua->playback);
1178
862a6244
CL		 1179 for (i = 0; i < ARRAY_SIZE(ua->intf); ++i) {
1180 mutex_lock(&ua->mutex);
1181 intf = ua->intf[i];
1182 ua->intf[i] = NULL;
1183 mutex_unlock(&ua->mutex);
1184 if (intf) {
1185 usb_set_intfdata(intf, NULL);
1186 if (intf != interface)
63978ab3 1187 usb_driver_release_interface(&ua101_driver,
862a6244 1188 intf);
63978ab3 1189 }
862a6244 1190 }
63978ab3
CL		 1191}
1192
1193static void ua101_card_free(struct snd_card *card)
1194{
1195 struct ua101 *ua = card->private_data;
1196
1197 mutex_destroy(&ua->mutex);
1198}
1199
1200static int ua101_probe(struct usb_interface *interface,
1201 const struct usb_device_id *usb_id)
1202{
1203 static const struct snd_usb_midi_endpoint_info midi_ep = {
1204 .out_cables = 0x0001,
1205 .in_cables = 0x0001
1206 };
1207 static const struct snd_usb_audio_quirk midi_quirk = {
1208 .type = QUIRK_MIDI_FIXED_ENDPOINT,
1209 .data = &midi_ep
1210 };
e584bc3c
CL		 1211 static const int intf_numbers[2][3] = {
1212 { /* UA-101 */
1213 [INTF_PLAYBACK] = 0,
1214 [INTF_CAPTURE] = 1,
1215 [INTF_MIDI] = 2,
1216 },
1217 { /* UA-1000 */
1218 [INTF_CAPTURE] = 1,
1219 [INTF_PLAYBACK] = 2,
1220 [INTF_MIDI] = 3,
1221 },
1222 };
63978ab3
CL		 1223 struct snd_card *card;
1224 struct ua101 *ua;
1225 unsigned int card_index, i;
e584bc3c
CL		 1226 int is_ua1000;
1227 const char *name;
63978ab3
CL		 1228 char usb_path[32];
1229 int err;
1230
e584bc3c
CL		 1231 is_ua1000 = usb_id->idProduct == 0x0044;
1232
1233 if (interface->altsetting->desc.bInterfaceNumber !=
1234 intf_numbers[is_ua1000][0])
63978ab3
CL		 1235 return -ENODEV;
1236
1237 mutex_lock(&devices_mutex);
1238
1239 for (card_index = 0; card_index < SNDRV_CARDS; ++card_index)
1240 if (enable[card_index] && !(devices_used & (1 << card_index)))
1241 break;
1242 if (card_index >= SNDRV_CARDS) {
1243 mutex_unlock(&devices_mutex);
1244 return -ENOENT;
1245 }
1246 err = snd_card_create(index[card_index], id[card_index], THIS_MODULE,
1247 sizeof(*ua), &card);
1248 if (err < 0) {
1249 mutex_unlock(&devices_mutex);
1250 return err;
1251 }
1252 card->private_free = ua101_card_free;
1253 ua = card->private_data;
1254 ua->dev = interface_to_usbdev(interface);
1255 ua->card = card;
1256 ua->card_index = card_index;
1257 INIT_LIST_HEAD(&ua->midi_list);
1258 spin_lock_init(&ua->lock);
1259 mutex_init(&ua->mutex);
1260 INIT_LIST_HEAD(&ua->ready_playback_urbs);
1261 tasklet_init(&ua->playback_tasklet,
1262 playback_tasklet, (unsigned long)ua);
1263 init_waitqueue_head(&ua->alsa_capture_wait);
1264 init_waitqueue_head(&ua->rate_feedback_wait);
1265 init_waitqueue_head(&ua->alsa_playback_wait);
1266
63978ab3
CL		 1267 ua->intf[0] = interface;
1268 for (i = 1; i < ARRAY_SIZE(ua->intf); ++i) {
e584bc3c
CL		 1269 ua->intf[i] = usb_ifnum_to_if(ua->dev,
1270 intf_numbers[is_ua1000][i]);
63978ab3 1271 if (!ua->intf[i]) {
e584bc3c
CL		 1272 dev_err(&ua->dev->dev, "interface %u not found\n",
1273 intf_numbers[is_ua1000][i]);
63978ab3
CL		 1274 err = -ENXIO;
1275 goto probe_error;
1276 }
1277 err = usb_driver_claim_interface(&ua101_driver,
1278 ua->intf[i], ua);
1279 if (err < 0) {
1280 ua->intf[i] = NULL;
1281 err = -EBUSY;
1282 goto probe_error;
1283 }
1284 }
63978ab3
CL		 1285
1286 snd_card_set_dev(card, &interface->dev);
1287
63978ab3
CL		 1288 err = detect_usb_format(ua);
1289 if (err < 0)
1290 goto probe_error;
63978ab3 1291
e584bc3c 1292 name = usb_id->idProduct == 0x0044 ? "UA-1000" : "UA-101";
63978ab3 1293 strcpy(card->driver, "UA-101");
e584bc3c 1294 strcpy(card->shortname, name);
63978ab3
CL		 1295 usb_make_path(ua->dev, usb_path, sizeof(usb_path));
1296 snprintf(ua->card->longname, sizeof(ua->card->longname),
e584bc3c 1297 "EDIROL %s (serial %s), %u Hz at %s, %s speed", name,
63978ab3
CL		 1298 ua->dev->serial ? ua->dev->serial : "?", ua->rate, usb_path,
1299 ua->dev->speed == USB_SPEED_HIGH ? "high" : "full");
1300
1301 err = alloc_stream_buffers(ua, &ua->capture);
1302 if (err < 0)
1303 goto probe_error;
1304 err = alloc_stream_buffers(ua, &ua->playback);
1305 if (err < 0)
1306 goto probe_error;
1307
1308 err = alloc_stream_urbs(ua, &ua->capture, capture_urb_complete);
1309 if (err < 0)
1310 goto probe_error;
1311 err = alloc_stream_urbs(ua, &ua->playback, playback_urb_complete);
1312 if (err < 0)
1313 goto probe_error;
1314
e584bc3c 1315 err = snd_pcm_new(card, name, 0, 1, 1, &ua->pcm);
63978ab3
CL		 1316 if (err < 0)
1317 goto probe_error;
1318 ua->pcm->private_data = ua;
e584bc3c 1319 strcpy(ua->pcm->name, name);
63978ab3
CL		 1320 snd_pcm_set_ops(ua->pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_pcm_ops);
1321 snd_pcm_set_ops(ua->pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_pcm_ops);
1322
63978ab3
CL		 1323 err = snd_usbmidi_create(card, ua->intf[INTF_MIDI],
1324 &ua->midi_list, &midi_quirk);
1325 if (err < 0)
1326 goto probe_error;
63978ab3
CL		 1327
1328 err = snd_card_register(card);
1329 if (err < 0)
1330 goto probe_error;
1331
1332 usb_set_intfdata(interface, ua);
1333 devices_used |= 1 << card_index;
1334
1335 mutex_unlock(&devices_mutex);
1336 return 0;
1337
1338probe_error:
1339 free_usb_related_resources(ua, interface);
1340 snd_card_free(card);
1341 mutex_unlock(&devices_mutex);
1342 return err;
1343}
1344
1345static void ua101_disconnect(struct usb_interface *interface)
1346{
1347 struct ua101 *ua = usb_get_intfdata(interface);
1348 struct list_head *midi;
1349
1350 if (!ua)
1351 return;
1352
1353 mutex_lock(&devices_mutex);
1354
1355 set_bit(DISCONNECTED, &ua->states);
1356 wake_up(&ua->rate_feedback_wait);
1357
1358 /* make sure that userspace cannot create new requests */
1359 snd_card_disconnect(ua->card);
1360
1361 /* make sure that there are no pending USB requests */
cd1199ed 1362 list_for_each(midi, &ua->midi_list)
63978ab3
CL		 1363 snd_usbmidi_disconnect(midi);
1364 abort_alsa_playback(ua);
1365 abort_alsa_capture(ua);
1366 mutex_lock(&ua->mutex);
1367 stop_usb_playback(ua);
1368 stop_usb_capture(ua);
1369 mutex_unlock(&ua->mutex);
1370
1371 free_usb_related_resources(ua, interface);
1372
1373 devices_used &= ~(1 << ua->card_index);
1374
1375 snd_card_free_when_closed(ua->card);
1376
1377 mutex_unlock(&devices_mutex);
1378}
1379
1380static struct usb_device_id ua101_ids[] = {
e584bc3c
CL		 1381 { USB_DEVICE(0x0582, 0x0044) }, /* UA-1000 high speed */
1382 { USB_DEVICE(0x0582, 0x007d) }, /* UA-101 high speed */
1383 { USB_DEVICE(0x0582, 0x008d) }, /* UA-101 full speed */
63978ab3
CL		 1384 { }
1385};
1386MODULE_DEVICE_TABLE(usb, ua101_ids);
1387
1388static struct usb_driver ua101_driver = {
1389 .name = "snd-ua101",
1390 .id_table = ua101_ids,
1391 .probe = ua101_probe,
1392 .disconnect = ua101_disconnect,
1393#if 0
1394 .suspend = ua101_suspend,
1395 .resume = ua101_resume,
1396#endif
1397};
1398
424f0750 1399module_usb_driver(ua101_driver);
Linux kernel - Deliverables
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