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41#include <linux/bitops.h>
42#include <linux/init.h>
43#include <linux/list.h>
44#include <linux/slab.h>
45#include <linux/string.h>
46#include <linux/usb.h>
47#include <linux/vmalloc.h>
48#include <linux/moduleparam.h>
49#include <linux/mutex.h>
50#include <sound/core.h>
51#include <sound/info.h>
52#include <sound/pcm.h>
53#include <sound/pcm_params.h>
54#include <sound/initval.h>
55
56#include "usbaudio.h"
57
58
59MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
60MODULE_DESCRIPTION("USB Audio");
61MODULE_LICENSE("GPL");
62MODULE_SUPPORTED_DEVICE("{{Generic,USB Audio}}");
63
64
65static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
66static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
67static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
68
69static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
70static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 };
71static int nrpacks = 8;
72static int async_unlink = 1;
73static int device_setup[SNDRV_CARDS];
74static int ignore_ctl_error;
75
76module_param_array(index, int, NULL, 0444);
77MODULE_PARM_DESC(index, "Index value for the USB audio adapter.");
78module_param_array(id, charp, NULL, 0444);
79MODULE_PARM_DESC(id, "ID string for the USB audio adapter.");
80module_param_array(enable, bool, NULL, 0444);
81MODULE_PARM_DESC(enable, "Enable USB audio adapter.");
82module_param_array(vid, int, NULL, 0444);
83MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device.");
84module_param_array(pid, int, NULL, 0444);
85MODULE_PARM_DESC(pid, "Product ID for the USB audio device.");
86module_param(nrpacks, int, 0644);
87MODULE_PARM_DESC(nrpacks, "Max. number of packets per URB.");
88module_param(async_unlink, bool, 0444);
89MODULE_PARM_DESC(async_unlink, "Use async unlink mode.");
90module_param_array(device_setup, int, NULL, 0444);
91MODULE_PARM_DESC(device_setup, "Specific device setup (if needed).");
92module_param(ignore_ctl_error, bool, 0444);
93MODULE_PARM_DESC(ignore_ctl_error,
94 "Ignore errors from USB controller for mixer interfaces.");
95
96
97
98
99
100
101
102
103
104
105
106#define MAX_PACKS 20
107#define MAX_PACKS_HS (MAX_PACKS * 8)
108#define MAX_URBS 8
109#define SYNC_URBS 4
110#define MAX_QUEUE 24
111
112struct audioformat {
113 struct list_head list;
114 snd_pcm_format_t format;
115 unsigned int channels;
116 unsigned int fmt_type;
117 unsigned int frame_size;
118 int iface;
119 unsigned char altsetting;
120 unsigned char altset_idx;
121 unsigned char attributes;
122 unsigned char endpoint;
123 unsigned char ep_attr;
124 unsigned char datainterval;
125 unsigned int maxpacksize;
126 unsigned int rates;
127 unsigned int rate_min, rate_max;
128 unsigned int nr_rates;
129 unsigned int *rate_table;
130};
131
132struct snd_usb_substream;
133
134struct snd_urb_ctx {
135 struct urb *urb;
136 unsigned int buffer_size;
137 struct snd_usb_substream *subs;
138 int index;
139 int packets;
140};
141
142struct snd_urb_ops {
143 int (*prepare)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
144 int (*retire)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
145 int (*prepare_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
146 int (*retire_sync)(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime, struct urb *u);
147};
148
149struct snd_usb_substream {
150 struct snd_usb_stream *stream;
151 struct usb_device *dev;
152 struct snd_pcm_substream *pcm_substream;
153 int direction;
154 int interface;
155 int endpoint;
156 struct audioformat *cur_audiofmt;
157 unsigned int cur_rate;
158 unsigned int period_bytes;
159 unsigned int format;
160 unsigned int datapipe;
161 unsigned int syncpipe;
162 unsigned int datainterval;
163 unsigned int syncinterval;
164 unsigned int freqn;
165 unsigned int freqm;
166 unsigned int freqmax;
167 unsigned int phase;
168 unsigned int maxpacksize;
169 unsigned int maxframesize;
170 unsigned int curpacksize;
171 unsigned int curframesize;
172 unsigned int fill_max: 1;
173 unsigned int fmt_type;
174
175 unsigned int running: 1;
176
177 unsigned int hwptr_done;
178 unsigned int transfer_done;
179 unsigned long active_mask;
180 unsigned long unlink_mask;
181
182 unsigned int nurbs;
183 struct snd_urb_ctx dataurb[MAX_URBS];
184 struct snd_urb_ctx syncurb[SYNC_URBS];
185 char *syncbuf;
186 dma_addr_t sync_dma;
187
188 u64 formats;
189 unsigned int num_formats;
190 struct list_head fmt_list;
191 struct snd_pcm_hw_constraint_list rate_list;
192 spinlock_t lock;
193
194 struct snd_urb_ops ops;
195};
196
197
198struct snd_usb_stream {
199 struct snd_usb_audio *chip;
200 struct snd_pcm *pcm;
201 int pcm_index;
202 unsigned int fmt_type;
203 struct snd_usb_substream substream[2];
204 struct list_head list;
205};
206
207
208
209
210
211
212
213static DEFINE_MUTEX(register_mutex);
214static struct snd_usb_audio *usb_chip[SNDRV_CARDS];
215
216
217
218
219
220
221static inline unsigned get_usb_full_speed_rate(unsigned int rate)
222{
223 return ((rate << 13) + 62) / 125;
224}
225
226
227
228
229
230static inline unsigned get_usb_high_speed_rate(unsigned int rate)
231{
232 return ((rate << 10) + 62) / 125;
233}
234
235
236static inline unsigned get_full_speed_hz(unsigned int usb_rate)
237{
238 return (usb_rate * 125 + (1 << 12)) >> 13;
239}
240
241
242static inline unsigned get_high_speed_hz(unsigned int usb_rate)
243{
244 return (usb_rate * 125 + (1 << 9)) >> 10;
245}
246
247
248
249
250
251
252
253
254static int prepare_capture_sync_urb(struct snd_usb_substream *subs,
255 struct snd_pcm_runtime *runtime,
256 struct urb *urb)
257{
258 unsigned char *cp = urb->transfer_buffer;
259 struct snd_urb_ctx *ctx = urb->context;
260
261 urb->dev = ctx->subs->dev;
262 urb->iso_frame_desc[0].length = 3;
263 urb->iso_frame_desc[0].offset = 0;
264 cp[0] = subs->freqn >> 2;
265 cp[1] = subs->freqn >> 10;
266 cp[2] = subs->freqn >> 18;
267 return 0;
268}
269
270
271
272
273
274
275
276static int prepare_capture_sync_urb_hs(struct snd_usb_substream *subs,
277 struct snd_pcm_runtime *runtime,
278 struct urb *urb)
279{
280 unsigned char *cp = urb->transfer_buffer;
281 struct snd_urb_ctx *ctx = urb->context;
282
283 urb->dev = ctx->subs->dev;
284 urb->iso_frame_desc[0].length = 4;
285 urb->iso_frame_desc[0].offset = 0;
286 cp[0] = subs->freqn;
287 cp[1] = subs->freqn >> 8;
288 cp[2] = subs->freqn >> 16;
289 cp[3] = subs->freqn >> 24;
290 return 0;
291}
292
293
294
295
296
297static int retire_capture_sync_urb(struct snd_usb_substream *subs,
298 struct snd_pcm_runtime *runtime,
299 struct urb *urb)
300{
301 return 0;
302}
303
304
305
306
307
308
309
310
311
312
313
314static int prepare_capture_urb(struct snd_usb_substream *subs,
315 struct snd_pcm_runtime *runtime,
316 struct urb *urb)
317{
318 int i, offs;
319 struct snd_urb_ctx *ctx = urb->context;
320
321 offs = 0;
322 urb->dev = ctx->subs->dev;
323 for (i = 0; i < ctx->packets; i++) {
324 urb->iso_frame_desc[i].offset = offs;
325 urb->iso_frame_desc[i].length = subs->curpacksize;
326 offs += subs->curpacksize;
327 }
328 urb->transfer_buffer_length = offs;
329 urb->number_of_packets = ctx->packets;
330 return 0;
331}
332
333
334
335
336
337
338
339static int retire_capture_urb(struct snd_usb_substream *subs,
340 struct snd_pcm_runtime *runtime,
341 struct urb *urb)
342{
343 unsigned long flags;
344 unsigned char *cp;
345 int i;
346 unsigned int stride, len, oldptr;
347 int period_elapsed = 0;
348
349 stride = runtime->frame_bits >> 3;
350
351 for (i = 0; i < urb->number_of_packets; i++) {
352 cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
353 if (urb->iso_frame_desc[i].status) {
354 snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status);
355
356 }
357 len = urb->iso_frame_desc[i].actual_length / stride;
358 if (! len)
359 continue;
360
361 spin_lock_irqsave(&subs->lock, flags);
362 oldptr = subs->hwptr_done;
363 subs->hwptr_done += len;
364 if (subs->hwptr_done >= runtime->buffer_size)
365 subs->hwptr_done -= runtime->buffer_size;
366 subs->transfer_done += len;
367 if (subs->transfer_done >= runtime->period_size) {
368 subs->transfer_done -= runtime->period_size;
369 period_elapsed = 1;
370 }
371 spin_unlock_irqrestore(&subs->lock, flags);
372
373 if (oldptr + len > runtime->buffer_size) {
374 unsigned int cnt = runtime->buffer_size - oldptr;
375 unsigned int blen = cnt * stride;
376 memcpy(runtime->dma_area + oldptr * stride, cp, blen);
377 memcpy(runtime->dma_area, cp + blen, len * stride - blen);
378 } else {
379 memcpy(runtime->dma_area + oldptr * stride, cp, len * stride);
380 }
381 }
382 if (period_elapsed)
383 snd_pcm_period_elapsed(subs->pcm_substream);
384 return 0;
385}
386
387
388
389
390static int retire_paused_capture_urb(struct snd_usb_substream *subs,
391 struct snd_pcm_runtime *runtime,
392 struct urb *urb)
393{
394 return 0;
395}
396
397
398
399
400
401
402
403
404static int prepare_playback_sync_urb(struct snd_usb_substream *subs,
405 struct snd_pcm_runtime *runtime,
406 struct urb *urb)
407{
408 struct snd_urb_ctx *ctx = urb->context;
409
410 urb->dev = ctx->subs->dev;
411 urb->iso_frame_desc[0].length = 3;
412 urb->iso_frame_desc[0].offset = 0;
413 return 0;
414}
415
416
417
418
419
420
421
422static int prepare_playback_sync_urb_hs(struct snd_usb_substream *subs,
423 struct snd_pcm_runtime *runtime,
424 struct urb *urb)
425{
426 struct snd_urb_ctx *ctx = urb->context;
427
428 urb->dev = ctx->subs->dev;
429 urb->iso_frame_desc[0].length = 4;
430 urb->iso_frame_desc[0].offset = 0;
431 return 0;
432}
433
434
435
436
437
438
439
440static int retire_playback_sync_urb(struct snd_usb_substream *subs,
441 struct snd_pcm_runtime *runtime,
442 struct urb *urb)
443{
444 unsigned int f;
445 unsigned long flags;
446
447 if (urb->iso_frame_desc[0].status == 0 &&
448 urb->iso_frame_desc[0].actual_length == 3) {
449 f = combine_triple((u8*)urb->transfer_buffer) << 2;
450 if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
451 spin_lock_irqsave(&subs->lock, flags);
452 subs->freqm = f;
453 spin_unlock_irqrestore(&subs->lock, flags);
454 }
455 }
456
457 return 0;
458}
459
460
461
462
463
464
465
466static int retire_playback_sync_urb_hs(struct snd_usb_substream *subs,
467 struct snd_pcm_runtime *runtime,
468 struct urb *urb)
469{
470 unsigned int f;
471 unsigned long flags;
472
473 if (urb->iso_frame_desc[0].status == 0 &&
474 urb->iso_frame_desc[0].actual_length == 4) {
475 f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff;
476 if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
477 spin_lock_irqsave(&subs->lock, flags);
478 subs->freqm = f;
479 spin_unlock_irqrestore(&subs->lock, flags);
480 }
481 }
482
483 return 0;
484}
485
486
487
488
489
490
491
492static int retire_playback_sync_urb_hs_emu(struct snd_usb_substream *subs,
493 struct snd_pcm_runtime *runtime,
494 struct urb *urb)
495{
496 unsigned int f;
497 unsigned long flags;
498
499 if (urb->iso_frame_desc[0].status == 0 &&
500 urb->iso_frame_desc[0].actual_length == 4) {
501 f = combine_quad((u8*)urb->transfer_buffer) & 0x0fffffff;
502 f >>= subs->datainterval;
503 if (f >= subs->freqn - subs->freqn / 8 && f <= subs->freqmax) {
504 spin_lock_irqsave(&subs->lock, flags);
505 subs->freqm = f;
506 spin_unlock_irqrestore(&subs->lock, flags);
507 }
508 }
509
510 return 0;
511}
512
513
514static int snd_usb_audio_next_packet_size(struct snd_usb_substream *subs)
515{
516 if (subs->fill_max)
517 return subs->maxframesize;
518 else {
519 subs->phase = (subs->phase & 0xffff)
520 + (subs->freqm << subs->datainterval);
521 return min(subs->phase >> 16, subs->maxframesize);
522 }
523}
524
525
526
527
528
529
530static int prepare_nodata_playback_urb(struct snd_usb_substream *subs,
531 struct snd_pcm_runtime *runtime,
532 struct urb *urb)
533{
534 unsigned int i, offs, counts;
535 struct snd_urb_ctx *ctx = urb->context;
536 int stride = runtime->frame_bits >> 3;
537
538 offs = 0;
539 urb->dev = ctx->subs->dev;
540 for (i = 0; i < ctx->packets; ++i) {
541 counts = snd_usb_audio_next_packet_size(subs);
542 urb->iso_frame_desc[i].offset = offs * stride;
543 urb->iso_frame_desc[i].length = counts * stride;
544 offs += counts;
545 }
546 urb->number_of_packets = ctx->packets;
547 urb->transfer_buffer_length = offs * stride;
548 memset(urb->transfer_buffer,
549 subs->cur_audiofmt->format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0,
550 offs * stride);
551 return 0;
552}
553
554
555
556
557
558
559
560
561
562static int prepare_playback_urb(struct snd_usb_substream *subs,
563 struct snd_pcm_runtime *runtime,
564 struct urb *urb)
565{
566 int i, stride, offs;
567 unsigned int counts;
568 unsigned long flags;
569 int period_elapsed = 0;
570 struct snd_urb_ctx *ctx = urb->context;
571
572 stride = runtime->frame_bits >> 3;
573
574 offs = 0;
575 urb->dev = ctx->subs->dev;
576 urb->number_of_packets = 0;
577 spin_lock_irqsave(&subs->lock, flags);
578 for (i = 0; i < ctx->packets; i++) {
579 counts = snd_usb_audio_next_packet_size(subs);
580
581 urb->iso_frame_desc[i].offset = offs * stride;
582 urb->iso_frame_desc[i].length = counts * stride;
583 offs += counts;
584 urb->number_of_packets++;
585 subs->transfer_done += counts;
586 if (subs->transfer_done >= runtime->period_size) {
587 subs->transfer_done -= runtime->period_size;
588 period_elapsed = 1;
589 if (subs->fmt_type == USB_FORMAT_TYPE_II) {
590 if (subs->transfer_done > 0) {
591
592
593 offs -= subs->transfer_done;
594 counts -= subs->transfer_done;
595 urb->iso_frame_desc[i].length =
596 counts * stride;
597 subs->transfer_done = 0;
598 }
599 i++;
600 if (i < ctx->packets) {
601
602 urb->iso_frame_desc[i].offset =
603 offs * stride;
604 urb->iso_frame_desc[i].length = 0;
605 urb->number_of_packets++;
606 }
607 break;
608 }
609 }
610 if (period_elapsed)
611 break;
612 }
613 if (subs->hwptr_done + offs > runtime->buffer_size) {
614
615 unsigned int len = runtime->buffer_size - subs->hwptr_done;
616 memcpy(urb->transfer_buffer,
617 runtime->dma_area + subs->hwptr_done * stride,
618 len * stride);
619 memcpy(urb->transfer_buffer + len * stride,
620 runtime->dma_area,
621 (offs - len) * stride);
622 } else {
623 memcpy(urb->transfer_buffer,
624 runtime->dma_area + subs->hwptr_done * stride,
625 offs * stride);
626 }
627 subs->hwptr_done += offs;
628 if (subs->hwptr_done >= runtime->buffer_size)
629 subs->hwptr_done -= runtime->buffer_size;
630 runtime->delay += offs;
631 spin_unlock_irqrestore(&subs->lock, flags);
632 urb->transfer_buffer_length = offs * stride;
633 if (period_elapsed)
634 snd_pcm_period_elapsed(subs->pcm_substream);
635 return 0;
636}
637
638
639
640
641
642static int retire_playback_urb(struct snd_usb_substream *subs,
643 struct snd_pcm_runtime *runtime,
644 struct urb *urb)
645{
646 unsigned long flags;
647 int stride = runtime->frame_bits >> 3;
648 int processed = urb->transfer_buffer_length / stride;
649
650 spin_lock_irqsave(&subs->lock, flags);
651 if (processed > runtime->delay)
652 runtime->delay = 0;
653 else
654 runtime->delay -= processed;
655 spin_unlock_irqrestore(&subs->lock, flags);
656 return 0;
657}
658
659
660
661
662static struct snd_urb_ops audio_urb_ops[2] = {
663 {
664 .prepare = prepare_nodata_playback_urb,
665 .retire = retire_playback_urb,
666 .prepare_sync = prepare_playback_sync_urb,
667 .retire_sync = retire_playback_sync_urb,
668 },
669 {
670 .prepare = prepare_capture_urb,
671 .retire = retire_capture_urb,
672 .prepare_sync = prepare_capture_sync_urb,
673 .retire_sync = retire_capture_sync_urb,
674 },
675};
676
677static struct snd_urb_ops audio_urb_ops_high_speed[2] = {
678 {
679 .prepare = prepare_nodata_playback_urb,
680 .retire = retire_playback_urb,
681 .prepare_sync = prepare_playback_sync_urb_hs,
682 .retire_sync = retire_playback_sync_urb_hs,
683 },
684 {
685 .prepare = prepare_capture_urb,
686 .retire = retire_capture_urb,
687 .prepare_sync = prepare_capture_sync_urb_hs,
688 .retire_sync = retire_capture_sync_urb,
689 },
690};
691
692
693
694
695static void snd_complete_urb(struct urb *urb)
696{
697 struct snd_urb_ctx *ctx = urb->context;
698 struct snd_usb_substream *subs = ctx->subs;
699 struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
700 int err = 0;
701
702 if ((subs->running && subs->ops.retire(subs, substream->runtime, urb)) ||
703 !subs->running ||
704 (err = subs->ops.prepare(subs, substream->runtime, urb)) < 0 ||
705 (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
706 clear_bit(ctx->index, &subs->active_mask);
707 if (err < 0) {
708 snd_printd(KERN_ERR "cannot submit urb (err = %d)\n", err);
709 snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
710 }
711 }
712}
713
714
715
716
717
718static void snd_complete_sync_urb(struct urb *urb)
719{
720 struct snd_urb_ctx *ctx = urb->context;
721 struct snd_usb_substream *subs = ctx->subs;
722 struct snd_pcm_substream *substream = ctx->subs->pcm_substream;
723 int err = 0;
724
725 if ((subs->running && subs->ops.retire_sync(subs, substream->runtime, urb)) ||
726 !subs->running ||
727 (err = subs->ops.prepare_sync(subs, substream->runtime, urb)) < 0 ||
728 (err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
729 clear_bit(ctx->index + 16, &subs->active_mask);
730 if (err < 0) {
731 snd_printd(KERN_ERR "cannot submit sync urb (err = %d)\n", err);
732 snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
733 }
734 }
735}
736
737
738
739static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
740 unsigned long offset)
741{
742 void *pageptr = subs->runtime->dma_area + offset;
743 return vmalloc_to_page(pageptr);
744}
745
746
747static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size)
748{
749 struct snd_pcm_runtime *runtime = subs->runtime;
750 if (runtime->dma_area) {
751 if (runtime->dma_bytes >= size)
752 return 0;
753 vfree(runtime->dma_area);
754 }
755 runtime->dma_area = vmalloc(size);
756 if (!runtime->dma_area)
757 return -ENOMEM;
758 runtime->dma_bytes = size;
759 return 0;
760}
761
762
763static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs)
764{
765 struct snd_pcm_runtime *runtime = subs->runtime;
766
767 vfree(runtime->dma_area);
768 runtime->dma_area = NULL;
769 return 0;
770}
771
772
773
774
775
776static int deactivate_urbs(struct snd_usb_substream *subs, int force, int can_sleep)
777{
778 unsigned int i;
779 int async;
780
781 subs->running = 0;
782
783 if (!force && subs->stream->chip->shutdown)
784 return -EBADFD;
785
786 async = !can_sleep && async_unlink;
787
788 if (!async && in_interrupt())
789 return 0;
790
791 for (i = 0; i < subs->nurbs; i++) {
792 if (test_bit(i, &subs->active_mask)) {
793 if (!test_and_set_bit(i, &subs->unlink_mask)) {
794 struct urb *u = subs->dataurb[i].urb;
795 if (async)
796 usb_unlink_urb(u);
797 else
798 usb_kill_urb(u);
799 }
800 }
801 }
802 if (subs->syncpipe) {
803 for (i = 0; i < SYNC_URBS; i++) {
804 if (test_bit(i+16, &subs->active_mask)) {
805 if (!test_and_set_bit(i+16, &subs->unlink_mask)) {
806 struct urb *u = subs->syncurb[i].urb;
807 if (async)
808 usb_unlink_urb(u);
809 else
810 usb_kill_urb(u);
811 }
812 }
813 }
814 }
815 return 0;
816}
817
818
819static const char *usb_error_string(int err)
820{
821 switch (err) {
822 case -ENODEV:
823 return "no device";
824 case -ENOENT:
825 return "endpoint not enabled";
826 case -EPIPE:
827 return "endpoint stalled";
828 case -ENOSPC:
829 return "not enough bandwidth";
830 case -ESHUTDOWN:
831 return "device disabled";
832 case -EHOSTUNREACH:
833 return "device suspended";
834 case -EINVAL:
835 case -EAGAIN:
836 case -EFBIG:
837 case -EMSGSIZE:
838 return "internal error";
839 default:
840 return "unknown error";
841 }
842}
843
844
845
846
847static int start_urbs(struct snd_usb_substream *subs, struct snd_pcm_runtime *runtime)
848{
849 unsigned int i;
850 int err;
851
852 if (subs->stream->chip->shutdown)
853 return -EBADFD;
854
855 for (i = 0; i < subs->nurbs; i++) {
856 if (snd_BUG_ON(!subs->dataurb[i].urb))
857 return -EINVAL;
858 if (subs->ops.prepare(subs, runtime, subs->dataurb[i].urb) < 0) {
859 snd_printk(KERN_ERR "cannot prepare datapipe for urb %d\n", i);
860 goto __error;
861 }
862 }
863 if (subs->syncpipe) {
864 for (i = 0; i < SYNC_URBS; i++) {
865 if (snd_BUG_ON(!subs->syncurb[i].urb))
866 return -EINVAL;
867 if (subs->ops.prepare_sync(subs, runtime, subs->syncurb[i].urb) < 0) {
868 snd_printk(KERN_ERR "cannot prepare syncpipe for urb %d\n", i);
869 goto __error;
870 }
871 }
872 }
873
874 subs->active_mask = 0;
875 subs->unlink_mask = 0;
876 subs->running = 1;
877 for (i = 0; i < subs->nurbs; i++) {
878 err = usb_submit_urb(subs->dataurb[i].urb, GFP_ATOMIC);
879 if (err < 0) {
880 snd_printk(KERN_ERR "cannot submit datapipe "
881 "for urb %d, error %d: %s\n",
882 i, err, usb_error_string(err));
883 goto __error;
884 }
885 set_bit(i, &subs->active_mask);
886 }
887 if (subs->syncpipe) {
888 for (i = 0; i < SYNC_URBS; i++) {
889 err = usb_submit_urb(subs->syncurb[i].urb, GFP_ATOMIC);
890 if (err < 0) {
891 snd_printk(KERN_ERR "cannot submit syncpipe "
892 "for urb %d, error %d: %s\n",
893 i, err, usb_error_string(err));
894 goto __error;
895 }
896 set_bit(i + 16, &subs->active_mask);
897 }
898 }
899 return 0;
900
901 __error:
902
903 deactivate_urbs(subs, 0, 0);
904 return -EPIPE;
905}
906
907
908
909
910
911static int wait_clear_urbs(struct snd_usb_substream *subs)
912{
913 unsigned long end_time = jiffies + msecs_to_jiffies(1000);
914 unsigned int i;
915 int alive;
916
917 do {
918 alive = 0;
919 for (i = 0; i < subs->nurbs; i++) {
920 if (test_bit(i, &subs->active_mask))
921 alive++;
922 }
923 if (subs->syncpipe) {
924 for (i = 0; i < SYNC_URBS; i++) {
925 if (test_bit(i + 16, &subs->active_mask))
926 alive++;
927 }
928 }
929 if (! alive)
930 break;
931 schedule_timeout_uninterruptible(1);
932 } while (time_before(jiffies, end_time));
933 if (alive)
934 snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);
935 return 0;
936}
937
938
939
940
941
942static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream)
943{
944 struct snd_usb_substream *subs;
945 snd_pcm_uframes_t hwptr_done;
946
947 subs = (struct snd_usb_substream *)substream->runtime->private_data;
948 spin_lock(&subs->lock);
949 hwptr_done = subs->hwptr_done;
950 spin_unlock(&subs->lock);
951 return hwptr_done;
952}
953
954
955
956
957
958static int snd_usb_pcm_playback_trigger(struct snd_pcm_substream *substream,
959 int cmd)
960{
961 struct snd_usb_substream *subs = substream->runtime->private_data;
962
963 switch (cmd) {
964 case SNDRV_PCM_TRIGGER_START:
965 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
966 subs->ops.prepare = prepare_playback_urb;
967 return 0;
968 case SNDRV_PCM_TRIGGER_STOP:
969 return deactivate_urbs(subs, 0, 0);
970 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
971 subs->ops.prepare = prepare_nodata_playback_urb;
972 return 0;
973 default:
974 return -EINVAL;
975 }
976}
977
978
979
980
981static int snd_usb_pcm_capture_trigger(struct snd_pcm_substream *substream,
982 int cmd)
983{
984 struct snd_usb_substream *subs = substream->runtime->private_data;
985
986 switch (cmd) {
987 case SNDRV_PCM_TRIGGER_START:
988 subs->ops.retire = retire_capture_urb;
989 return start_urbs(subs, substream->runtime);
990 case SNDRV_PCM_TRIGGER_STOP:
991 return deactivate_urbs(subs, 0, 0);
992 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
993 subs->ops.retire = retire_paused_capture_urb;
994 return 0;
995 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
996 subs->ops.retire = retire_capture_urb;
997 return 0;
998 default:
999 return -EINVAL;
1000 }
1001}
1002
1003
1004
1005
1006
1007static void release_urb_ctx(struct snd_urb_ctx *u)
1008{
1009 if (u->urb) {
1010 if (u->buffer_size)
1011 usb_buffer_free(u->subs->dev, u->buffer_size,
1012 u->urb->transfer_buffer,
1013 u->urb->transfer_dma);
1014 usb_free_urb(u->urb);
1015 u->urb = NULL;
1016 }
1017}
1018
1019
1020
1021
1022static void release_substream_urbs(struct snd_usb_substream *subs, int force)
1023{
1024 int i;
1025
1026
1027 deactivate_urbs(subs, force, 1);
1028 wait_clear_urbs(subs);
1029
1030 for (i = 0; i < MAX_URBS; i++)
1031 release_urb_ctx(&subs->dataurb[i]);
1032 for (i = 0; i < SYNC_URBS; i++)
1033 release_urb_ctx(&subs->syncurb[i]);
1034 usb_buffer_free(subs->dev, SYNC_URBS * 4,
1035 subs->syncbuf, subs->sync_dma);
1036 subs->syncbuf = NULL;
1037 subs->nurbs = 0;
1038}
1039
1040
1041
1042
1043static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int period_bytes,
1044 unsigned int rate, unsigned int frame_bits)
1045{
1046 unsigned int maxsize, i;
1047 int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
1048 unsigned int urb_packs, total_packs, packs_per_ms;
1049
1050
1051 if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
1052 subs->freqn = get_usb_full_speed_rate(rate);
1053 else
1054 subs->freqn = get_usb_high_speed_rate(rate);
1055 subs->freqm = subs->freqn;
1056
1057 if (subs->maxpacksize) {
1058
1059 maxsize = subs->maxpacksize;
1060 subs->freqmax = (maxsize / (frame_bits >> 3))
1061 << (16 - subs->datainterval);
1062 } else {
1063
1064 subs->freqmax = subs->freqn + (subs->freqn >> 2);
1065 maxsize = ((subs->freqmax + 0xffff) * (frame_bits >> 3))
1066 >> (16 - subs->datainterval);
1067 }
1068 subs->phase = 0;
1069
1070 if (subs->fill_max)
1071 subs->curpacksize = subs->maxpacksize;
1072 else
1073 subs->curpacksize = maxsize;
1074
1075 if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
1076 packs_per_ms = 8 >> subs->datainterval;
1077 else
1078 packs_per_ms = 1;
1079
1080 if (is_playback) {
1081 urb_packs = max(nrpacks, 1);
1082 urb_packs = min(urb_packs, (unsigned int)MAX_PACKS);
1083 } else
1084 urb_packs = 1;
1085 urb_packs *= packs_per_ms;
1086 if (subs->syncpipe)
1087 urb_packs = min(urb_packs, 1U << subs->syncinterval);
1088
1089
1090 if (is_playback) {
1091 unsigned int minsize, maxpacks;
1092
1093 minsize = (subs->freqn >> (16 - subs->datainterval))
1094 * (frame_bits >> 3);
1095
1096 if (subs->syncpipe)
1097 minsize -= minsize >> 3;
1098 minsize = max(minsize, 1u);
1099 total_packs = (period_bytes + minsize - 1) / minsize;
1100
1101 if (total_packs < 2) {
1102 total_packs = 2;
1103 } else {
1104
1105 maxpacks = max(MAX_QUEUE * packs_per_ms, urb_packs * 2);
1106 total_packs = min(total_packs, maxpacks);
1107 }
1108 } else {
1109 while (urb_packs > 1 && urb_packs * maxsize >= period_bytes)
1110 urb_packs >>= 1;
1111 total_packs = MAX_URBS * urb_packs;
1112 }
1113 subs->nurbs = (total_packs + urb_packs - 1) / urb_packs;
1114 if (subs->nurbs > MAX_URBS) {
1115
1116 subs->nurbs = MAX_URBS;
1117 total_packs = MAX_URBS * urb_packs;
1118 } else if (subs->nurbs < 2) {
1119
1120
1121
1122 subs->nurbs = 2;
1123 }
1124
1125
1126 for (i = 0; i < subs->nurbs; i++) {
1127 struct snd_urb_ctx *u = &subs->dataurb[i];
1128 u->index = i;
1129 u->subs = subs;
1130 u->packets = (i + 1) * total_packs / subs->nurbs
1131 - i * total_packs / subs->nurbs;
1132 u->buffer_size = maxsize * u->packets;
1133 if (subs->fmt_type == USB_FORMAT_TYPE_II)
1134 u->packets++;
1135 u->urb = usb_alloc_urb(u->packets, GFP_KERNEL);
1136 if (!u->urb)
1137 goto out_of_memory;
1138 u->urb->transfer_buffer =
1139 usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL,
1140 &u->urb->transfer_dma);
1141 if (!u->urb->transfer_buffer)
1142 goto out_of_memory;
1143 u->urb->pipe = subs->datapipe;
1144 u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
1145 u->urb->interval = 1 << subs->datainterval;
1146 u->urb->context = u;
1147 u->urb->complete = snd_complete_urb;
1148 }
1149
1150 if (subs->syncpipe) {
1151
1152 subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4,
1153 GFP_KERNEL, &subs->sync_dma);
1154 if (!subs->syncbuf)
1155 goto out_of_memory;
1156 for (i = 0; i < SYNC_URBS; i++) {
1157 struct snd_urb_ctx *u = &subs->syncurb[i];
1158 u->index = i;
1159 u->subs = subs;
1160 u->packets = 1;
1161 u->urb = usb_alloc_urb(1, GFP_KERNEL);
1162 if (!u->urb)
1163 goto out_of_memory;
1164 u->urb->transfer_buffer = subs->syncbuf + i * 4;
1165 u->urb->transfer_dma = subs->sync_dma + i * 4;
1166 u->urb->transfer_buffer_length = 4;
1167 u->urb->pipe = subs->syncpipe;
1168 u->urb->transfer_flags = URB_ISO_ASAP |
1169 URB_NO_TRANSFER_DMA_MAP;
1170 u->urb->number_of_packets = 1;
1171 u->urb->interval = 1 << subs->syncinterval;
1172 u->urb->context = u;
1173 u->urb->complete = snd_complete_sync_urb;
1174 }
1175 }
1176 return 0;
1177
1178out_of_memory:
1179 release_substream_urbs(subs, 0);
1180 return -ENOMEM;
1181}
1182
1183
1184
1185
1186
1187static struct audioformat *find_format(struct snd_usb_substream *subs, unsigned int format,
1188 unsigned int rate, unsigned int channels)
1189{
1190 struct list_head *p;
1191 struct audioformat *found = NULL;
1192 int cur_attr = 0, attr;
1193
1194 list_for_each(p, &subs->fmt_list) {
1195 struct audioformat *fp;
1196 fp = list_entry(p, struct audioformat, list);
1197 if (fp->format != format || fp->channels != channels)
1198 continue;
1199 if (rate < fp->rate_min || rate > fp->rate_max)
1200 continue;
1201 if (! (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)) {
1202 unsigned int i;
1203 for (i = 0; i < fp->nr_rates; i++)
1204 if (fp->rate_table[i] == rate)
1205 break;
1206 if (i >= fp->nr_rates)
1207 continue;
1208 }
1209 attr = fp->ep_attr & EP_ATTR_MASK;
1210 if (! found) {
1211 found = fp;
1212 cur_attr = attr;
1213 continue;
1214 }
1215
1216
1217
1218
1219
1220 if (attr != cur_attr) {
1221 if ((attr == EP_ATTR_ASYNC &&
1222 subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
1223 (attr == EP_ATTR_ADAPTIVE &&
1224 subs->direction == SNDRV_PCM_STREAM_CAPTURE))
1225 continue;
1226 if ((cur_attr == EP_ATTR_ASYNC &&
1227 subs->direction == SNDRV_PCM_STREAM_PLAYBACK) ||
1228 (cur_attr == EP_ATTR_ADAPTIVE &&
1229 subs->direction == SNDRV_PCM_STREAM_CAPTURE)) {
1230 found = fp;
1231 cur_attr = attr;
1232 continue;
1233 }
1234 }
1235
1236 if (fp->maxpacksize > found->maxpacksize) {
1237 found = fp;
1238 cur_attr = attr;
1239 }
1240 }
1241 return found;
1242}
1243
1244
1245
1246
1247
1248static int init_usb_pitch(struct usb_device *dev, int iface,
1249 struct usb_host_interface *alts,
1250 struct audioformat *fmt)
1251{
1252 unsigned int ep;
1253 unsigned char data[1];
1254 int err;
1255
1256 ep = get_endpoint(alts, 0)->bEndpointAddress;
1257
1258 if (fmt->attributes & EP_CS_ATTR_PITCH_CONTROL) {
1259 data[0] = 1;
1260 if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR,
1261 USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
1262 PITCH_CONTROL << 8, ep, data, 1, 1000)) < 0) {
1263 snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH\n",
1264 dev->devnum, iface, ep);
1265 return err;
1266 }
1267 }
1268 return 0;
1269}
1270
1271static int init_usb_sample_rate(struct usb_device *dev, int iface,
1272 struct usb_host_interface *alts,
1273 struct audioformat *fmt, int rate)
1274{
1275 unsigned int ep;
1276 unsigned char data[3];
1277 int err;
1278
1279 ep = get_endpoint(alts, 0)->bEndpointAddress;
1280
1281 if (fmt->attributes & EP_CS_ATTR_SAMPLE_RATE) {
1282 int crate;
1283 data[0] = rate;
1284 data[1] = rate >> 8;
1285 data[2] = rate >> 16;
1286 if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), SET_CUR,
1287 USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT,
1288 SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
1289 snd_printk(KERN_ERR "%d:%d:%d: cannot set freq %d to ep %#x\n",
1290 dev->devnum, iface, fmt->altsetting, rate, ep);
1291 return err;
1292 }
1293 if ((err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), GET_CUR,
1294 USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_IN,
1295 SAMPLING_FREQ_CONTROL << 8, ep, data, 3, 1000)) < 0) {
1296 snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq at ep %#x\n",
1297 dev->devnum, iface, fmt->altsetting, ep);
1298 return 0;
1299 }
1300 crate = data[0] | (data[1] << 8) | (data[2] << 16);
1301 if (crate != rate) {
1302 snd_printd(KERN_WARNING "current rate %d is different from the runtime rate %d\n", crate, rate);
1303
1304 }
1305 }
1306 return 0;
1307}
1308
1309
1310
1311
1312static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt)
1313{
1314 struct usb_device *dev = subs->dev;
1315 struct usb_host_interface *alts;
1316 struct usb_interface_descriptor *altsd;
1317 struct usb_interface *iface;
1318 unsigned int ep, attr;
1319 int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK;
1320 int err;
1321
1322 iface = usb_ifnum_to_if(dev, fmt->iface);
1323 if (WARN_ON(!iface))
1324 return -EINVAL;
1325 alts = &iface->altsetting[fmt->altset_idx];
1326 altsd = get_iface_desc(alts);
1327 if (WARN_ON(altsd->bAlternateSetting != fmt->altsetting))
1328 return -EINVAL;
1329
1330 if (fmt == subs->cur_audiofmt)
1331 return 0;
1332
1333
1334 if (subs->interface >= 0 && subs->interface != fmt->iface) {
1335 if (usb_set_interface(subs->dev, subs->interface, 0) < 0) {
1336 snd_printk(KERN_ERR "%d:%d:%d: return to setting 0 failed\n",
1337 dev->devnum, fmt->iface, fmt->altsetting);
1338 return -EIO;
1339 }
1340 subs->interface = -1;
1341 subs->format = 0;
1342 }
1343
1344
1345 if (subs->interface != fmt->iface || subs->format != fmt->altset_idx) {
1346 if (usb_set_interface(dev, fmt->iface, fmt->altsetting) < 0) {
1347 snd_printk(KERN_ERR "%d:%d:%d: usb_set_interface failed\n",
1348 dev->devnum, fmt->iface, fmt->altsetting);
1349 return -EIO;
1350 }
1351 snd_printdd(KERN_INFO "setting usb interface %d:%d\n", fmt->iface, fmt->altsetting);
1352 subs->interface = fmt->iface;
1353 subs->format = fmt->altset_idx;
1354 }
1355
1356
1357 ep = fmt->endpoint & USB_ENDPOINT_NUMBER_MASK;
1358 if (is_playback)
1359 subs->datapipe = usb_sndisocpipe(dev, ep);
1360 else
1361 subs->datapipe = usb_rcvisocpipe(dev, ep);
1362 subs->datainterval = fmt->datainterval;
1363 subs->syncpipe = subs->syncinterval = 0;
1364 subs->maxpacksize = fmt->maxpacksize;
1365 subs->fill_max = 0;
1366
1367
1368
1369
1370
1371
1372 attr = fmt->ep_attr & EP_ATTR_MASK;
1373 if (((is_playback && attr == EP_ATTR_ASYNC) ||
1374 (! is_playback && attr == EP_ATTR_ADAPTIVE)) &&
1375 altsd->bNumEndpoints >= 2) {
1376
1377
1378
1379
1380 if ((get_endpoint(alts, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 0x01 ||
1381 (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
1382 get_endpoint(alts, 1)->bSynchAddress != 0)) {
1383 snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
1384 dev->devnum, fmt->iface, fmt->altsetting);
1385 return -EINVAL;
1386 }
1387 ep = get_endpoint(alts, 1)->bEndpointAddress;
1388 if (get_endpoint(alts, 0)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
1389 (( is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress | USB_DIR_IN)) ||
1390 (!is_playback && ep != (unsigned int)(get_endpoint(alts, 0)->bSynchAddress & ~USB_DIR_IN)))) {
1391 snd_printk(KERN_ERR "%d:%d:%d : invalid synch pipe\n",
1392 dev->devnum, fmt->iface, fmt->altsetting);
1393 return -EINVAL;
1394 }
1395 ep &= USB_ENDPOINT_NUMBER_MASK;
1396 if (is_playback)
1397 subs->syncpipe = usb_rcvisocpipe(dev, ep);
1398 else
1399 subs->syncpipe = usb_sndisocpipe(dev, ep);
1400 if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE &&
1401 get_endpoint(alts, 1)->bRefresh >= 1 &&
1402 get_endpoint(alts, 1)->bRefresh <= 9)
1403 subs->syncinterval = get_endpoint(alts, 1)->bRefresh;
1404 else if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
1405 subs->syncinterval = 1;
1406 else if (get_endpoint(alts, 1)->bInterval >= 1 &&
1407 get_endpoint(alts, 1)->bInterval <= 16)
1408 subs->syncinterval = get_endpoint(alts, 1)->bInterval - 1;
1409 else
1410 subs->syncinterval = 3;
1411 }
1412
1413
1414 if (fmt->attributes & EP_CS_ATTR_FILL_MAX)
1415 subs->fill_max = 1;
1416
1417 if ((err = init_usb_pitch(dev, subs->interface, alts, fmt)) < 0)
1418 return err;
1419
1420 subs->cur_audiofmt = fmt;
1421
1422#if 0
1423 printk(KERN_DEBUG
1424 "setting done: format = %d, rate = %d..%d, channels = %d\n",
1425 fmt->format, fmt->rate_min, fmt->rate_max, fmt->channels);
1426 printk(KERN_DEBUG
1427 " datapipe = 0x%0x, syncpipe = 0x%0x\n",
1428 subs->datapipe, subs->syncpipe);
1429#endif
1430
1431 return 0;
1432}
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444static int snd_usb_hw_params(struct snd_pcm_substream *substream,
1445 struct snd_pcm_hw_params *hw_params)
1446{
1447 struct snd_usb_substream *subs = substream->runtime->private_data;
1448 struct audioformat *fmt;
1449 unsigned int channels, rate, format;
1450 int ret, changed;
1451
1452 ret = snd_pcm_alloc_vmalloc_buffer(substream,
1453 params_buffer_bytes(hw_params));
1454 if (ret < 0)
1455 return ret;
1456
1457 format = params_format(hw_params);
1458 rate = params_rate(hw_params);
1459 channels = params_channels(hw_params);
1460 fmt = find_format(subs, format, rate, channels);
1461 if (!fmt) {
1462 snd_printd(KERN_DEBUG "cannot set format: format = %#x, rate = %d, channels = %d\n",
1463 format, rate, channels);
1464 return -EINVAL;
1465 }
1466
1467 changed = subs->cur_audiofmt != fmt ||
1468 subs->period_bytes != params_period_bytes(hw_params) ||
1469 subs->cur_rate != rate;
1470 if ((ret = set_format(subs, fmt)) < 0)
1471 return ret;
1472
1473 if (subs->cur_rate != rate) {
1474 struct usb_host_interface *alts;
1475 struct usb_interface *iface;
1476 iface = usb_ifnum_to_if(subs->dev, fmt->iface);
1477 alts = &iface->altsetting[fmt->altset_idx];
1478 ret = init_usb_sample_rate(subs->dev, subs->interface, alts, fmt, rate);
1479 if (ret < 0)
1480 return ret;
1481 subs->cur_rate = rate;
1482 }
1483
1484 if (changed) {
1485
1486 release_substream_urbs(subs, 0);
1487
1488 ret = init_substream_urbs(subs, params_period_bytes(hw_params),
1489 params_rate(hw_params),
1490 snd_pcm_format_physical_width(params_format(hw_params)) * params_channels(hw_params));
1491 }
1492
1493 return ret;
1494}
1495
1496
1497
1498
1499
1500
1501static int snd_usb_hw_free(struct snd_pcm_substream *substream)
1502{
1503 struct snd_usb_substream *subs = substream->runtime->private_data;
1504
1505 subs->cur_audiofmt = NULL;
1506 subs->cur_rate = 0;
1507 subs->period_bytes = 0;
1508 if (!subs->stream->chip->shutdown)
1509 release_substream_urbs(subs, 0);
1510 return snd_pcm_free_vmalloc_buffer(substream);
1511}
1512
1513
1514
1515
1516
1517
1518static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
1519{
1520 struct snd_pcm_runtime *runtime = substream->runtime;
1521 struct snd_usb_substream *subs = runtime->private_data;
1522
1523 if (! subs->cur_audiofmt) {
1524 snd_printk(KERN_ERR "usbaudio: no format is specified!\n");
1525 return -ENXIO;
1526 }
1527
1528
1529 subs->maxframesize = bytes_to_frames(runtime, subs->maxpacksize);
1530 subs->curframesize = bytes_to_frames(runtime, subs->curpacksize);
1531
1532
1533 subs->hwptr_done = 0;
1534 subs->transfer_done = 0;
1535 subs->phase = 0;
1536 runtime->delay = 0;
1537
1538
1539 deactivate_urbs(subs, 0, 1);
1540 wait_clear_urbs(subs);
1541
1542
1543
1544 if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
1545 subs->ops.prepare = prepare_nodata_playback_urb;
1546 return start_urbs(subs, runtime);
1547 } else
1548 return 0;
1549}
1550
1551static struct snd_pcm_hardware snd_usb_hardware =
1552{
1553 .info = SNDRV_PCM_INFO_MMAP |
1554 SNDRV_PCM_INFO_MMAP_VALID |
1555 SNDRV_PCM_INFO_BATCH |
1556 SNDRV_PCM_INFO_INTERLEAVED |
1557 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1558 SNDRV_PCM_INFO_PAUSE,
1559 .buffer_bytes_max = 1024 * 1024,
1560 .period_bytes_min = 64,
1561 .period_bytes_max = 512 * 1024,
1562 .periods_min = 2,
1563 .periods_max = 1024,
1564};
1565
1566
1567
1568
1569
1570#ifdef HW_CONST_DEBUG
1571#define hwc_debug(fmt, args...) printk(KERN_DEBUG fmt, ##args)
1572#else
1573#define hwc_debug(fmt, args...)
1574#endif
1575
1576static int hw_check_valid_format(struct snd_usb_substream *subs,
1577 struct snd_pcm_hw_params *params,
1578 struct audioformat *fp)
1579{
1580 struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
1581 struct snd_interval *ct = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
1582 struct snd_mask *fmts = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
1583 struct snd_interval *pt = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME);
1584 unsigned int ptime;
1585
1586
1587 if (!snd_mask_test(fmts, fp->format)) {
1588 hwc_debug(" > check: no supported format %d\n", fp->format);
1589 return 0;
1590 }
1591
1592 if (fp->channels < ct->min || fp->channels > ct->max) {
1593 hwc_debug(" > check: no valid channels %d (%d/%d)\n", fp->channels, ct->min, ct->max);
1594 return 0;
1595 }
1596
1597 if (fp->rate_min > it->max || (fp->rate_min == it->max && it->openmax)) {
1598 hwc_debug(" > check: rate_min %d > max %d\n", fp->rate_min, it->max);
1599 return 0;
1600 }
1601 if (fp->rate_max < it->min || (fp->rate_max == it->min && it->openmin)) {
1602 hwc_debug(" > check: rate_max %d < min %d\n", fp->rate_max, it->min);
1603 return 0;
1604 }
1605
1606 if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) {
1607 ptime = 125 * (1 << fp->datainterval);
1608 if (ptime > pt->max || (ptime == pt->max && pt->openmax)) {
1609 hwc_debug(" > check: ptime %u > max %u\n", ptime, pt->max);
1610 return 0;
1611 }
1612 }
1613 return 1;
1614}
1615
1616static int hw_rule_rate(struct snd_pcm_hw_params *params,
1617 struct snd_pcm_hw_rule *rule)
1618{
1619 struct snd_usb_substream *subs = rule->private;
1620 struct list_head *p;
1621 struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
1622 unsigned int rmin, rmax;
1623 int changed;
1624
1625 hwc_debug("hw_rule_rate: (%d,%d)\n", it->min, it->max);
1626 changed = 0;
1627 rmin = rmax = 0;
1628 list_for_each(p, &subs->fmt_list) {
1629 struct audioformat *fp;
1630 fp = list_entry(p, struct audioformat, list);
1631 if (!hw_check_valid_format(subs, params, fp))
1632 continue;
1633 if (changed++) {
1634 if (rmin > fp->rate_min)
1635 rmin = fp->rate_min;
1636 if (rmax < fp->rate_max)
1637 rmax = fp->rate_max;
1638 } else {
1639 rmin = fp->rate_min;
1640 rmax = fp->rate_max;
1641 }
1642 }
1643
1644 if (!changed) {
1645 hwc_debug(" --> get empty\n");
1646 it->empty = 1;
1647 return -EINVAL;
1648 }
1649
1650 changed = 0;
1651 if (it->min < rmin) {
1652 it->min = rmin;
1653 it->openmin = 0;
1654 changed = 1;
1655 }
1656 if (it->max > rmax) {
1657 it->max = rmax;
1658 it->openmax = 0;
1659 changed = 1;
1660 }
1661 if (snd_interval_checkempty(it)) {
1662 it->empty = 1;
1663 return -EINVAL;
1664 }
1665 hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
1666 return changed;
1667}
1668
1669
1670static int hw_rule_channels(struct snd_pcm_hw_params *params,
1671 struct snd_pcm_hw_rule *rule)
1672{
1673 struct snd_usb_substream *subs = rule->private;
1674 struct list_head *p;
1675 struct snd_interval *it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
1676 unsigned int rmin, rmax;
1677 int changed;
1678
1679 hwc_debug("hw_rule_channels: (%d,%d)\n", it->min, it->max);
1680 changed = 0;
1681 rmin = rmax = 0;
1682 list_for_each(p, &subs->fmt_list) {
1683 struct audioformat *fp;
1684 fp = list_entry(p, struct audioformat, list);
1685 if (!hw_check_valid_format(subs, params, fp))
1686 continue;
1687 if (changed++) {
1688 if (rmin > fp->channels)
1689 rmin = fp->channels;
1690 if (rmax < fp->channels)
1691 rmax = fp->channels;
1692 } else {
1693 rmin = fp->channels;
1694 rmax = fp->channels;
1695 }
1696 }
1697
1698 if (!changed) {
1699 hwc_debug(" --> get empty\n");
1700 it->empty = 1;
1701 return -EINVAL;
1702 }
1703
1704 changed = 0;
1705 if (it->min < rmin) {
1706 it->min = rmin;
1707 it->openmin = 0;
1708 changed = 1;
1709 }
1710 if (it->max > rmax) {
1711 it->max = rmax;
1712 it->openmax = 0;
1713 changed = 1;
1714 }
1715 if (snd_interval_checkempty(it)) {
1716 it->empty = 1;
1717 return -EINVAL;
1718 }
1719 hwc_debug(" --> (%d, %d) (changed = %d)\n", it->min, it->max, changed);
1720 return changed;
1721}
1722
1723static int hw_rule_format(struct snd_pcm_hw_params *params,
1724 struct snd_pcm_hw_rule *rule)
1725{
1726 struct snd_usb_substream *subs = rule->private;
1727 struct list_head *p;
1728 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
1729 u64 fbits;
1730 u32 oldbits[2];
1731 int changed;
1732
1733 hwc_debug("hw_rule_format: %x:%x\n", fmt->bits[0], fmt->bits[1]);
1734 fbits = 0;
1735 list_for_each(p, &subs->fmt_list) {
1736 struct audioformat *fp;
1737 fp = list_entry(p, struct audioformat, list);
1738 if (!hw_check_valid_format(subs, params, fp))
1739 continue;
1740 fbits |= (1ULL << fp->format);
1741 }
1742
1743 oldbits[0] = fmt->bits[0];
1744 oldbits[1] = fmt->bits[1];
1745 fmt->bits[0] &= (u32)fbits;
1746 fmt->bits[1] &= (u32)(fbits >> 32);
1747 if (!fmt->bits[0] && !fmt->bits[1]) {
1748 hwc_debug(" --> get empty\n");
1749 return -EINVAL;
1750 }
1751 changed = (oldbits[0] != fmt->bits[0] || oldbits[1] != fmt->bits[1]);
1752 hwc_debug(" --> %x:%x (changed = %d)\n", fmt->bits[0], fmt->bits[1], changed);
1753 return changed;
1754}
1755
1756static int hw_rule_period_time(struct snd_pcm_hw_params *params,
1757 struct snd_pcm_hw_rule *rule)
1758{
1759 struct snd_usb_substream *subs = rule->private;
1760 struct audioformat *fp;
1761 struct snd_interval *it;
1762 unsigned char min_datainterval;
1763 unsigned int pmin;
1764 int changed;
1765
1766 it = hw_param_interval(params, SNDRV_PCM_HW_PARAM_PERIOD_TIME);
1767 hwc_debug("hw_rule_period_time: (%u,%u)\n", it->min, it->max);
1768 min_datainterval = 0xff;
1769 list_for_each_entry(fp, &subs->fmt_list, list) {
1770 if (!hw_check_valid_format(subs, params, fp))
1771 continue;
1772 min_datainterval = min(min_datainterval, fp->datainterval);
1773 }
1774 if (min_datainterval == 0xff) {
1775 hwc_debug(" --> get emtpy\n");
1776 it->empty = 1;
1777 return -EINVAL;
1778 }
1779 pmin = 125 * (1 << min_datainterval);
1780 changed = 0;
1781 if (it->min < pmin) {
1782 it->min = pmin;
1783 it->openmin = 0;
1784 changed = 1;
1785 }
1786 if (snd_interval_checkempty(it)) {
1787 it->empty = 1;
1788 return -EINVAL;
1789 }
1790 hwc_debug(" --> (%u,%u) (changed = %d)\n", it->min, it->max, changed);
1791 return changed;
1792}
1793
1794
1795
1796
1797static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime,
1798 struct snd_usb_substream *subs)
1799{
1800 struct audioformat *fp;
1801 int count = 0, needs_knot = 0;
1802 int err;
1803
1804 list_for_each_entry(fp, &subs->fmt_list, list) {
1805 if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS)
1806 return 0;
1807 count += fp->nr_rates;
1808 if (fp->rates & SNDRV_PCM_RATE_KNOT)
1809 needs_knot = 1;
1810 }
1811 if (!needs_knot)
1812 return 0;
1813
1814 subs->rate_list.count = count;
1815 subs->rate_list.list = kmalloc(sizeof(int) * count, GFP_KERNEL);
1816 subs->rate_list.mask = 0;
1817 count = 0;
1818 list_for_each_entry(fp, &subs->fmt_list, list) {
1819 int i;
1820 for (i = 0; i < fp->nr_rates; i++)
1821 subs->rate_list.list[count++] = fp->rate_table[i];
1822 }
1823 err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1824 &subs->rate_list);
1825 if (err < 0)
1826 return err;
1827
1828 return 0;
1829}
1830
1831
1832
1833
1834
1835
1836static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substream *subs)
1837{
1838 struct list_head *p;
1839 unsigned int pt, ptmin;
1840 int param_period_time_if_needed;
1841 int err;
1842
1843 runtime->hw.formats = subs->formats;
1844
1845 runtime->hw.rate_min = 0x7fffffff;
1846 runtime->hw.rate_max = 0;
1847 runtime->hw.channels_min = 256;
1848 runtime->hw.channels_max = 0;
1849 runtime->hw.rates = 0;
1850 ptmin = UINT_MAX;
1851
1852 list_for_each(p, &subs->fmt_list) {
1853 struct audioformat *fp;
1854 fp = list_entry(p, struct audioformat, list);
1855 runtime->hw.rates |= fp->rates;
1856 if (runtime->hw.rate_min > fp->rate_min)
1857 runtime->hw.rate_min = fp->rate_min;
1858 if (runtime->hw.rate_max < fp->rate_max)
1859 runtime->hw.rate_max = fp->rate_max;
1860 if (runtime->hw.channels_min > fp->channels)
1861 runtime->hw.channels_min = fp->channels;
1862 if (runtime->hw.channels_max < fp->channels)
1863 runtime->hw.channels_max = fp->channels;
1864 if (fp->fmt_type == USB_FORMAT_TYPE_II && fp->frame_size > 0) {
1865
1866 runtime->hw.period_bytes_min = runtime->hw.period_bytes_max =
1867 fp->frame_size;
1868 }
1869 pt = 125 * (1 << fp->datainterval);
1870 ptmin = min(ptmin, pt);
1871 }
1872
1873 param_period_time_if_needed = SNDRV_PCM_HW_PARAM_PERIOD_TIME;
1874 if (snd_usb_get_speed(subs->dev) != USB_SPEED_HIGH)
1875
1876 ptmin = 1000;
1877 if (ptmin == 1000)
1878
1879 param_period_time_if_needed = -1;
1880 snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
1881 ptmin, UINT_MAX);
1882
1883 if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
1884 hw_rule_rate, subs,
1885 SNDRV_PCM_HW_PARAM_FORMAT,
1886 SNDRV_PCM_HW_PARAM_CHANNELS,
1887 param_period_time_if_needed,
1888 -1)) < 0)
1889 return err;
1890 if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
1891 hw_rule_channels, subs,
1892 SNDRV_PCM_HW_PARAM_FORMAT,
1893 SNDRV_PCM_HW_PARAM_RATE,
1894 param_period_time_if_needed,
1895 -1)) < 0)
1896 return err;
1897 if ((err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT,
1898 hw_rule_format, subs,
1899 SNDRV_PCM_HW_PARAM_RATE,
1900 SNDRV_PCM_HW_PARAM_CHANNELS,
1901 param_period_time_if_needed,
1902 -1)) < 0)
1903 return err;
1904 if (param_period_time_if_needed >= 0) {
1905 err = snd_pcm_hw_rule_add(runtime, 0,
1906 SNDRV_PCM_HW_PARAM_PERIOD_TIME,
1907 hw_rule_period_time, subs,
1908 SNDRV_PCM_HW_PARAM_FORMAT,
1909 SNDRV_PCM_HW_PARAM_CHANNELS,
1910 SNDRV_PCM_HW_PARAM_RATE,
1911 -1);
1912 if (err < 0)
1913 return err;
1914 }
1915 if ((err = snd_usb_pcm_check_knot(runtime, subs)) < 0)
1916 return err;
1917 return 0;
1918}
1919
1920static int snd_usb_pcm_open(struct snd_pcm_substream *substream, int direction)
1921{
1922 struct snd_usb_stream *as = snd_pcm_substream_chip(substream);
1923 struct snd_pcm_runtime *runtime = substream->runtime;
1924 struct snd_usb_substream *subs = &as->substream[direction];
1925
1926 subs->interface = -1;
1927 subs->format = 0;
1928 runtime->hw = snd_usb_hardware;
1929 runtime->private_data = subs;
1930 subs->pcm_substream = substream;
1931 return setup_hw_info(runtime, subs);
1932}
1933
1934static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction)
1935{
1936 struct snd_usb_stream *as = snd_pcm_substream_chip(substream);
1937 struct snd_usb_substream *subs = &as->substream[direction];
1938
1939 if (subs->interface >= 0) {
1940 usb_set_interface(subs->dev, subs->interface, 0);
1941 subs->interface = -1;
1942 }
1943 subs->pcm_substream = NULL;
1944 return 0;
1945}
1946
1947static int snd_usb_playback_open(struct snd_pcm_substream *substream)
1948{
1949 return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_PLAYBACK);
1950}
1951
1952static int snd_usb_playback_close(struct snd_pcm_substream *substream)
1953{
1954 return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_PLAYBACK);
1955}
1956
1957static int snd_usb_capture_open(struct snd_pcm_substream *substream)
1958{
1959 return snd_usb_pcm_open(substream, SNDRV_PCM_STREAM_CAPTURE);
1960}
1961
1962static int snd_usb_capture_close(struct snd_pcm_substream *substream)
1963{
1964 return snd_usb_pcm_close(substream, SNDRV_PCM_STREAM_CAPTURE);
1965}
1966
1967static struct snd_pcm_ops snd_usb_playback_ops = {
1968 .open = snd_usb_playback_open,
1969 .close = snd_usb_playback_close,
1970 .ioctl = snd_pcm_lib_ioctl,
1971 .hw_params = snd_usb_hw_params,
1972 .hw_free = snd_usb_hw_free,
1973 .prepare = snd_usb_pcm_prepare,
1974 .trigger = snd_usb_pcm_playback_trigger,
1975 .pointer = snd_usb_pcm_pointer,
1976 .page = snd_pcm_get_vmalloc_page,
1977};
1978
1979static struct snd_pcm_ops snd_usb_capture_ops = {
1980 .open = snd_usb_capture_open,
1981 .close = snd_usb_capture_close,
1982 .ioctl = snd_pcm_lib_ioctl,
1983 .hw_params = snd_usb_hw_params,
1984 .hw_free = snd_usb_hw_free,
1985 .prepare = snd_usb_pcm_prepare,
1986 .trigger = snd_usb_pcm_capture_trigger,
1987 .pointer = snd_usb_pcm_pointer,
1988 .page = snd_pcm_get_vmalloc_page,
1989};
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size)
2001{
2002 switch (size) {
2003 case 1: return *bytes;
2004 case 2: return combine_word(bytes);
2005 case 3: return combine_triple(bytes);
2006 case 4: return combine_quad(bytes);
2007 default: return 0;
2008 }
2009}
2010
2011
2012
2013
2014
2015void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype)
2016{
2017 u8 *p, *end, *next;
2018
2019 p = descstart;
2020 end = p + desclen;
2021 for (; p < end;) {
2022 if (p[0] < 2)
2023 return NULL;
2024 next = p + p[0];
2025 if (next > end)
2026 return NULL;
2027 if (p[1] == dtype && (!after || (void *)p > after)) {
2028 return p;
2029 }
2030 p = next;
2031 }
2032 return NULL;
2033}
2034
2035
2036
2037
2038void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype)
2039{
2040 unsigned char *p = after;
2041
2042 while ((p = snd_usb_find_desc(buffer, buflen, p,
2043 USB_DT_CS_INTERFACE)) != NULL) {
2044 if (p[0] >= 3 && p[2] == dsubtype)
2045 return p;
2046 }
2047 return NULL;
2048}
2049
2050
2051
2052
2053
2054int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
2055 __u8 requesttype, __u16 value, __u16 index, void *data,
2056 __u16 size, int timeout)
2057{
2058 int err;
2059 void *buf = NULL;
2060
2061 if (size > 0) {
2062 buf = kmemdup(data, size, GFP_KERNEL);
2063 if (!buf)
2064 return -ENOMEM;
2065 }
2066 err = usb_control_msg(dev, pipe, request, requesttype,
2067 value, index, buf, size, timeout);
2068 if (size > 0) {
2069 memcpy(data, buf, size);
2070 kfree(buf);
2071 }
2072 return err;
2073}
2074
2075
2076
2077
2078
2079
2080static int usb_audio_probe(struct usb_interface *intf,
2081 const struct usb_device_id *id);
2082static void usb_audio_disconnect(struct usb_interface *intf);
2083
2084#ifdef CONFIG_PM
2085static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message);
2086static int usb_audio_resume(struct usb_interface *intf);
2087#else
2088#define usb_audio_suspend NULL
2089#define usb_audio_resume NULL
2090#endif
2091
2092static struct usb_device_id usb_audio_ids [] = {
2093#include "usbquirks.h"
2094 { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS),
2095 .bInterfaceClass = USB_CLASS_AUDIO,
2096 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL },
2097 { }
2098};
2099
2100MODULE_DEVICE_TABLE (usb, usb_audio_ids);
2101
2102static struct usb_driver usb_audio_driver = {
2103 .name = "snd-usb-audio",
2104 .probe = usb_audio_probe,
2105 .disconnect = usb_audio_disconnect,
2106 .suspend = usb_audio_suspend,
2107 .resume = usb_audio_resume,
2108 .id_table = usb_audio_ids,
2109};
2110
2111
2112#if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS)
2113
2114
2115
2116
2117static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
2118{
2119 struct list_head *p;
2120 static char *sync_types[4] = {
2121 "NONE", "ASYNC", "ADAPTIVE", "SYNC"
2122 };
2123
2124 list_for_each(p, &subs->fmt_list) {
2125 struct audioformat *fp;
2126 fp = list_entry(p, struct audioformat, list);
2127 snd_iprintf(buffer, " Interface %d\n", fp->iface);
2128 snd_iprintf(buffer, " Altset %d\n", fp->altsetting);
2129 snd_iprintf(buffer, " Format: %s\n",
2130 snd_pcm_format_name(fp->format));
2131 snd_iprintf(buffer, " Channels: %d\n", fp->channels);
2132 snd_iprintf(buffer, " Endpoint: %d %s (%s)\n",
2133 fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
2134 fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
2135 sync_types[(fp->ep_attr & EP_ATTR_MASK) >> 2]);
2136 if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
2137 snd_iprintf(buffer, " Rates: %d - %d (continuous)\n",
2138 fp->rate_min, fp->rate_max);
2139 } else {
2140 unsigned int i;
2141 snd_iprintf(buffer, " Rates: ");
2142 for (i = 0; i < fp->nr_rates; i++) {
2143 if (i > 0)
2144 snd_iprintf(buffer, ", ");
2145 snd_iprintf(buffer, "%d", fp->rate_table[i]);
2146 }
2147 snd_iprintf(buffer, "\n");
2148 }
2149 if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
2150 snd_iprintf(buffer, " Data packet interval: %d us\n",
2151 125 * (1 << fp->datainterval));
2152
2153
2154 }
2155}
2156
2157static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
2158{
2159 if (subs->running) {
2160 unsigned int i;
2161 snd_iprintf(buffer, " Status: Running\n");
2162 snd_iprintf(buffer, " Interface = %d\n", subs->interface);
2163 snd_iprintf(buffer, " Altset = %d\n", subs->format);
2164 snd_iprintf(buffer, " URBs = %d [ ", subs->nurbs);
2165 for (i = 0; i < subs->nurbs; i++)
2166 snd_iprintf(buffer, "%d ", subs->dataurb[i].packets);
2167 snd_iprintf(buffer, "]\n");
2168 snd_iprintf(buffer, " Packet Size = %d\n", subs->curpacksize);
2169 snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n",
2170 snd_usb_get_speed(subs->dev) == USB_SPEED_FULL
2171 ? get_full_speed_hz(subs->freqm)
2172 : get_high_speed_hz(subs->freqm),
2173 subs->freqm >> 16, subs->freqm & 0xffff);
2174 } else {
2175 snd_iprintf(buffer, " Status: Stop\n");
2176 }
2177}
2178
2179static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
2180{
2181 struct snd_usb_stream *stream = entry->private_data;
2182
2183 snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);
2184
2185 if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
2186 snd_iprintf(buffer, "\nPlayback:\n");
2187 proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
2188 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
2189 }
2190 if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
2191 snd_iprintf(buffer, "\nCapture:\n");
2192 proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
2193 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
2194 }
2195}
2196
2197static void proc_pcm_format_add(struct snd_usb_stream *stream)
2198{
2199 struct snd_info_entry *entry;
2200 char name[32];
2201 struct snd_card *card = stream->chip->card;
2202
2203 sprintf(name, "stream%d", stream->pcm_index);
2204 if (!snd_card_proc_new(card, name, &entry))
2205 snd_info_set_text_ops(entry, stream, proc_pcm_format_read);
2206}
2207
2208#else
2209
2210static inline void proc_pcm_format_add(struct snd_usb_stream *stream)
2211{
2212}
2213
2214#endif
2215
2216
2217
2218
2219
2220static void init_substream(struct snd_usb_stream *as, int stream, struct audioformat *fp)
2221{
2222 struct snd_usb_substream *subs = &as->substream[stream];
2223
2224 INIT_LIST_HEAD(&subs->fmt_list);
2225 spin_lock_init(&subs->lock);
2226
2227 subs->stream = as;
2228 subs->direction = stream;
2229 subs->dev = as->chip->dev;
2230 if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) {
2231 subs->ops = audio_urb_ops[stream];
2232 } else {
2233 subs->ops = audio_urb_ops_high_speed[stream];
2234 switch (as->chip->usb_id) {
2235 case USB_ID(0x041e, 0x3f02):
2236 case USB_ID(0x041e, 0x3f04):
2237 case USB_ID(0x041e, 0x3f0a):
2238 subs->ops.retire_sync = retire_playback_sync_urb_hs_emu;
2239 break;
2240 }
2241 }
2242 snd_pcm_set_ops(as->pcm, stream,
2243 stream == SNDRV_PCM_STREAM_PLAYBACK ?
2244 &snd_usb_playback_ops : &snd_usb_capture_ops);
2245
2246 list_add_tail(&fp->list, &subs->fmt_list);
2247 subs->formats |= 1ULL << fp->format;
2248 subs->endpoint = fp->endpoint;
2249 subs->num_formats++;
2250 subs->fmt_type = fp->fmt_type;
2251}
2252
2253
2254
2255
2256
2257static void free_substream(struct snd_usb_substream *subs)
2258{
2259 struct list_head *p, *n;
2260
2261 if (!subs->num_formats)
2262 return;
2263 list_for_each_safe(p, n, &subs->fmt_list) {
2264 struct audioformat *fp = list_entry(p, struct audioformat, list);
2265 kfree(fp->rate_table);
2266 kfree(fp);
2267 }
2268 kfree(subs->rate_list.list);
2269}
2270
2271
2272
2273
2274
2275static void snd_usb_audio_stream_free(struct snd_usb_stream *stream)
2276{
2277 free_substream(&stream->substream[0]);
2278 free_substream(&stream->substream[1]);
2279 list_del(&stream->list);
2280 kfree(stream);
2281}
2282
2283static void snd_usb_audio_pcm_free(struct snd_pcm *pcm)
2284{
2285 struct snd_usb_stream *stream = pcm->private_data;
2286 if (stream) {
2287 stream->pcm = NULL;
2288 snd_usb_audio_stream_free(stream);
2289 }
2290}
2291
2292
2293
2294
2295
2296
2297
2298static int add_audio_endpoint(struct snd_usb_audio *chip, int stream, struct audioformat *fp)
2299{
2300 struct list_head *p;
2301 struct snd_usb_stream *as;
2302 struct snd_usb_substream *subs;
2303 struct snd_pcm *pcm;
2304 int err;
2305
2306 list_for_each(p, &chip->pcm_list) {
2307 as = list_entry(p, struct snd_usb_stream, list);
2308 if (as->fmt_type != fp->fmt_type)
2309 continue;
2310 subs = &as->substream[stream];
2311 if (!subs->endpoint)
2312 continue;
2313 if (subs->endpoint == fp->endpoint) {
2314 list_add_tail(&fp->list, &subs->fmt_list);
2315 subs->num_formats++;
2316 subs->formats |= 1ULL << fp->format;
2317 return 0;
2318 }
2319 }
2320
2321 list_for_each(p, &chip->pcm_list) {
2322 as = list_entry(p, struct snd_usb_stream, list);
2323 if (as->fmt_type != fp->fmt_type)
2324 continue;
2325 subs = &as->substream[stream];
2326 if (subs->endpoint)
2327 continue;
2328 err = snd_pcm_new_stream(as->pcm, stream, 1);
2329 if (err < 0)
2330 return err;
2331 init_substream(as, stream, fp);
2332 return 0;
2333 }
2334
2335
2336 as = kzalloc(sizeof(*as), GFP_KERNEL);
2337 if (!as)
2338 return -ENOMEM;
2339 as->pcm_index = chip->pcm_devs;
2340 as->chip = chip;
2341 as->fmt_type = fp->fmt_type;
2342 err = snd_pcm_new(chip->card, "USB Audio", chip->pcm_devs,
2343 stream == SNDRV_PCM_STREAM_PLAYBACK ? 1 : 0,
2344 stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1,
2345 &pcm);
2346 if (err < 0) {
2347 kfree(as);
2348 return err;
2349 }
2350 as->pcm = pcm;
2351 pcm->private_data = as;
2352 pcm->private_free = snd_usb_audio_pcm_free;
2353 pcm->info_flags = 0;
2354 if (chip->pcm_devs > 0)
2355 sprintf(pcm->name, "USB Audio #%d", chip->pcm_devs);
2356 else
2357 strcpy(pcm->name, "USB Audio");
2358
2359 init_substream(as, stream, fp);
2360
2361 list_add(&as->list, &chip->pcm_list);
2362 chip->pcm_devs++;
2363
2364 proc_pcm_format_add(as);
2365
2366 return 0;
2367}
2368
2369
2370
2371
2372
2373static int is_big_endian_format(struct snd_usb_audio *chip, struct audioformat *fp)
2374{
2375 switch (chip->usb_id) {
2376 case USB_ID(0x0763, 0x2001):
2377 if (fp->endpoint & USB_DIR_IN)
2378 return 1;
2379 break;
2380 case USB_ID(0x0763, 0x2003):
2381 if (device_setup[chip->index] == 0x00 ||
2382 fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3)
2383 return 1;
2384 }
2385 return 0;
2386}
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397static int parse_audio_format_i_type(struct snd_usb_audio *chip, struct audioformat *fp,
2398 int format, unsigned char *fmt)
2399{
2400 int pcm_format;
2401 int sample_width, sample_bytes;
2402
2403
2404 pcm_format = -1;
2405 sample_width = fmt[6];
2406 sample_bytes = fmt[5];
2407 switch (format) {
2408 case 0:
2409 snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n",
2410 chip->dev->devnum, fp->iface, fp->altsetting);
2411
2412 case USB_AUDIO_FORMAT_PCM:
2413 if (sample_width > sample_bytes * 8) {
2414 snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
2415 chip->dev->devnum, fp->iface, fp->altsetting,
2416 sample_width, sample_bytes);
2417 }
2418
2419 switch (fmt[5]) {
2420 case 1:
2421 pcm_format = SNDRV_PCM_FORMAT_S8;
2422 break;
2423 case 2:
2424 if (is_big_endian_format(chip, fp))
2425 pcm_format = SNDRV_PCM_FORMAT_S16_BE;
2426 else
2427 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
2428 break;
2429 case 3:
2430 if (is_big_endian_format(chip, fp))
2431 pcm_format = SNDRV_PCM_FORMAT_S24_3BE;
2432 else
2433 pcm_format = SNDRV_PCM_FORMAT_S24_3LE;
2434 break;
2435 case 4:
2436 pcm_format = SNDRV_PCM_FORMAT_S32_LE;
2437 break;
2438 default:
2439 snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
2440 chip->dev->devnum, fp->iface,
2441 fp->altsetting, sample_width, sample_bytes);
2442 break;
2443 }
2444 break;
2445 case USB_AUDIO_FORMAT_PCM8:
2446 pcm_format = SNDRV_PCM_FORMAT_U8;
2447
2448
2449
2450 if (chip->usb_id == USB_ID(0x04fa, 0x4201))
2451 pcm_format = SNDRV_PCM_FORMAT_S8;
2452 break;
2453 case USB_AUDIO_FORMAT_IEEE_FLOAT:
2454 pcm_format = SNDRV_PCM_FORMAT_FLOAT_LE;
2455 break;
2456 case USB_AUDIO_FORMAT_ALAW:
2457 pcm_format = SNDRV_PCM_FORMAT_A_LAW;
2458 break;
2459 case USB_AUDIO_FORMAT_MU_LAW:
2460 pcm_format = SNDRV_PCM_FORMAT_MU_LAW;
2461 break;
2462 default:
2463 snd_printk(KERN_INFO "%d:%u:%d : unsupported format type %d\n",
2464 chip->dev->devnum, fp->iface, fp->altsetting, format);
2465 break;
2466 }
2467 return pcm_format;
2468}
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481static int parse_audio_format_rates(struct snd_usb_audio *chip, struct audioformat *fp,
2482 unsigned char *fmt, int offset)
2483{
2484 int nr_rates = fmt[offset];
2485
2486 if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
2487 snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n",
2488 chip->dev->devnum, fp->iface, fp->altsetting);
2489 return -1;
2490 }
2491
2492 if (nr_rates) {
2493
2494
2495
2496 int r, idx;
2497
2498 fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL);
2499 if (fp->rate_table == NULL) {
2500 snd_printk(KERN_ERR "cannot malloc\n");
2501 return -1;
2502 }
2503
2504 fp->nr_rates = 0;
2505 fp->rate_min = fp->rate_max = 0;
2506 for (r = 0, idx = offset + 1; r < nr_rates; r++, idx += 3) {
2507 unsigned int rate = combine_triple(&fmt[idx]);
2508 if (!rate)
2509 continue;
2510
2511 if (rate == 48000 && nr_rates == 1 &&
2512 (chip->usb_id == USB_ID(0x0d8c, 0x0201) ||
2513 chip->usb_id == USB_ID(0x0d8c, 0x0102)) &&
2514 fp->altsetting == 5 && fp->maxpacksize == 392)
2515 rate = 96000;
2516 fp->rate_table[fp->nr_rates] = rate;
2517 if (!fp->rate_min || rate < fp->rate_min)
2518 fp->rate_min = rate;
2519 if (!fp->rate_max || rate > fp->rate_max)
2520 fp->rate_max = rate;
2521 fp->rates |= snd_pcm_rate_to_rate_bit(rate);
2522 fp->nr_rates++;
2523 }
2524 if (!fp->nr_rates) {
2525 hwc_debug("All rates were zero. Skipping format!\n");
2526 return -1;
2527 }
2528 } else {
2529
2530 fp->rates = SNDRV_PCM_RATE_CONTINUOUS;
2531 fp->rate_min = combine_triple(&fmt[offset + 1]);
2532 fp->rate_max = combine_triple(&fmt[offset + 4]);
2533 }
2534 return 0;
2535}
2536
2537
2538
2539
2540static int parse_audio_format_i(struct snd_usb_audio *chip, struct audioformat *fp,
2541 int format, unsigned char *fmt)
2542{
2543 int pcm_format;
2544
2545 if (fmt[3] == USB_FORMAT_TYPE_III) {
2546
2547
2548
2549
2550 switch (chip->usb_id) {
2551
2552 case USB_ID(0x0763, 0x2003):
2553 if (device_setup[chip->index] == 0x00 &&
2554 fp->altsetting == 6)
2555 pcm_format = SNDRV_PCM_FORMAT_S16_BE;
2556 else
2557 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
2558 break;
2559 default:
2560 pcm_format = SNDRV_PCM_FORMAT_S16_LE;
2561 }
2562 } else {
2563 pcm_format = parse_audio_format_i_type(chip, fp, format, fmt);
2564 if (pcm_format < 0)
2565 return -1;
2566 }
2567 fp->format = pcm_format;
2568 fp->channels = fmt[4];
2569 if (fp->channels < 1) {
2570 snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n",
2571 chip->dev->devnum, fp->iface, fp->altsetting, fp->channels);
2572 return -1;
2573 }
2574 return parse_audio_format_rates(chip, fp, fmt, 7);
2575}
2576
2577
2578
2579
2580static int parse_audio_format_ii(struct snd_usb_audio *chip, struct audioformat *fp,
2581 int format, unsigned char *fmt)
2582{
2583 int brate, framesize;
2584 switch (format) {
2585 case USB_AUDIO_FORMAT_AC3:
2586
2587
2588 fp->format = SNDRV_PCM_FORMAT_U8;
2589 break;
2590 case USB_AUDIO_FORMAT_MPEG:
2591 fp->format = SNDRV_PCM_FORMAT_MPEG;
2592 break;
2593 default:
2594 snd_printd(KERN_INFO "%d:%u:%d : unknown format tag %#x is detected. processed as MPEG.\n",
2595 chip->dev->devnum, fp->iface, fp->altsetting, format);
2596 fp->format = SNDRV_PCM_FORMAT_MPEG;
2597 break;
2598 }
2599 fp->channels = 1;
2600 brate = combine_word(&fmt[4]);
2601 framesize = combine_word(&fmt[6]);
2602 snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
2603 fp->frame_size = framesize;
2604 return parse_audio_format_rates(chip, fp, fmt, 8);
2605}
2606
2607static int parse_audio_format(struct snd_usb_audio *chip, struct audioformat *fp,
2608 int format, unsigned char *fmt, int stream)
2609{
2610 int err;
2611
2612 switch (fmt[3]) {
2613 case USB_FORMAT_TYPE_I:
2614 case USB_FORMAT_TYPE_III:
2615 err = parse_audio_format_i(chip, fp, format, fmt);
2616 break;
2617 case USB_FORMAT_TYPE_II:
2618 err = parse_audio_format_ii(chip, fp, format, fmt);
2619 break;
2620 default:
2621 snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
2622 chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]);
2623 return -1;
2624 }
2625 fp->fmt_type = fmt[3];
2626 if (err < 0)
2627 return err;
2628#if 1
2629
2630
2631
2632
2633 if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
2634 chip->usb_id == USB_ID(0x041e, 0x3020) ||
2635 chip->usb_id == USB_ID(0x041e, 0x3061)) {
2636 if (fmt[3] == USB_FORMAT_TYPE_I &&
2637 fp->rates != SNDRV_PCM_RATE_48000 &&
2638 fp->rates != SNDRV_PCM_RATE_96000)
2639 return -1;
2640 }
2641#endif
2642 return 0;
2643}
2644
2645static unsigned char parse_datainterval(struct snd_usb_audio *chip,
2646 struct usb_host_interface *alts)
2647{
2648 if (snd_usb_get_speed(chip->dev) == USB_SPEED_HIGH &&
2649 get_endpoint(alts, 0)->bInterval >= 1 &&
2650 get_endpoint(alts, 0)->bInterval <= 4)
2651 return get_endpoint(alts, 0)->bInterval - 1;
2652 else
2653 return 0;
2654}
2655
2656static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
2657 int iface, int altno);
2658static int parse_audio_endpoints(struct snd_usb_audio *chip, int iface_no)
2659{
2660 struct usb_device *dev;
2661 struct usb_interface *iface;
2662 struct usb_host_interface *alts;
2663 struct usb_interface_descriptor *altsd;
2664 int i, altno, err, stream;
2665 int format;
2666 struct audioformat *fp = NULL;
2667 unsigned char *fmt, *csep;
2668 int num;
2669
2670 dev = chip->dev;
2671
2672
2673 iface = usb_ifnum_to_if(dev, iface_no);
2674
2675 num = iface->num_altsetting;
2676
2677
2678
2679
2680
2681 if (chip->usb_id == USB_ID(0x04fa, 0x4201))
2682 num = 4;
2683
2684 for (i = 0; i < num; i++) {
2685 alts = &iface->altsetting[i];
2686 altsd = get_iface_desc(alts);
2687
2688 if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
2689 altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
2690 (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING &&
2691 altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) ||
2692 altsd->bNumEndpoints < 1 ||
2693 le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0)
2694 continue;
2695
2696 if ((get_endpoint(alts, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
2697 USB_ENDPOINT_XFER_ISOC)
2698 continue;
2699
2700 stream = (get_endpoint(alts, 0)->bEndpointAddress & USB_DIR_IN) ?
2701 SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
2702 altno = altsd->bAlternateSetting;
2703
2704
2705
2706 if (chip->usb_id == USB_ID(0x0763, 0x2003) &&
2707 audiophile_skip_setting_quirk(chip, iface_no, altno))
2708 continue;
2709
2710
2711 fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, AS_GENERAL);
2712 if (!fmt) {
2713 snd_printk(KERN_ERR "%d:%u:%d : AS_GENERAL descriptor not found\n",
2714 dev->devnum, iface_no, altno);
2715 continue;
2716 }
2717
2718 if (fmt[0] < 7) {
2719 snd_printk(KERN_ERR "%d:%u:%d : invalid AS_GENERAL desc\n",
2720 dev->devnum, iface_no, altno);
2721 continue;
2722 }
2723
2724 format = (fmt[6] << 8) | fmt[5];
2725
2726
2727 fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, FORMAT_TYPE);
2728 if (!fmt) {
2729 snd_printk(KERN_ERR "%d:%u:%d : no FORMAT_TYPE desc\n",
2730 dev->devnum, iface_no, altno);
2731 continue;
2732 }
2733 if (fmt[0] < 8) {
2734 snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n",
2735 dev->devnum, iface_no, altno);
2736 continue;
2737 }
2738
2739
2740
2741
2742
2743
2744 if (fmt[4] == 1 && fmt[5] == 2 && altno == 2 && num == 3 &&
2745 fp && fp->altsetting == 1 && fp->channels == 1 &&
2746 fp->format == SNDRV_PCM_FORMAT_S16_LE &&
2747 le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) ==
2748 fp->maxpacksize * 2)
2749 continue;
2750
2751 csep = snd_usb_find_desc(alts->endpoint[0].extra, alts->endpoint[0].extralen, NULL, USB_DT_CS_ENDPOINT);
2752
2753 if (!csep && altsd->bNumEndpoints >= 2)
2754 csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT);
2755 if (!csep || csep[0] < 7 || csep[2] != EP_GENERAL) {
2756 snd_printk(KERN_WARNING "%d:%u:%d : no or invalid"
2757 " class specific endpoint descriptor\n",
2758 dev->devnum, iface_no, altno);
2759 csep = NULL;
2760 }
2761
2762 fp = kzalloc(sizeof(*fp), GFP_KERNEL);
2763 if (! fp) {
2764 snd_printk(KERN_ERR "cannot malloc\n");
2765 return -ENOMEM;
2766 }
2767
2768 fp->iface = iface_no;
2769 fp->altsetting = altno;
2770 fp->altset_idx = i;
2771 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
2772 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
2773 fp->datainterval = parse_datainterval(chip, alts);
2774 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
2775 if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
2776 fp->maxpacksize = (((fp->maxpacksize >> 11) & 3) + 1)
2777 * (fp->maxpacksize & 0x7ff);
2778 fp->attributes = csep ? csep[3] : 0;
2779
2780
2781
2782 switch (chip->usb_id) {
2783 case USB_ID(0x0a92, 0x0053):
2784
2785
2786
2787 fp->attributes &= ~EP_CS_ATTR_SAMPLE_RATE;
2788 break;
2789 case USB_ID(0x041e, 0x3020):
2790 case USB_ID(0x0763, 0x2003):
2791
2792 fp->attributes |= EP_CS_ATTR_SAMPLE_RATE;
2793 break;
2794 case USB_ID(0x047f, 0x0ca1):
2795 case USB_ID(0x077d, 0x07af):
2796
2797
2798
2799
2800
2801 fp->ep_attr &= ~EP_ATTR_MASK;
2802 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
2803 fp->ep_attr |= EP_ATTR_ADAPTIVE;
2804 else
2805 fp->ep_attr |= EP_ATTR_SYNC;
2806 break;
2807 }
2808
2809
2810 if (parse_audio_format(chip, fp, format, fmt, stream) < 0) {
2811 kfree(fp->rate_table);
2812 kfree(fp);
2813 continue;
2814 }
2815
2816 snd_printdd(KERN_INFO "%d:%u:%d: add audio endpoint %#x\n", dev->devnum, iface_no, altno, fp->endpoint);
2817 err = add_audio_endpoint(chip, stream, fp);
2818 if (err < 0) {
2819 kfree(fp->rate_table);
2820 kfree(fp);
2821 return err;
2822 }
2823
2824 usb_set_interface(chip->dev, iface_no, altno);
2825 init_usb_pitch(chip->dev, iface_no, alts, fp);
2826 init_usb_sample_rate(chip->dev, iface_no, alts, fp, fp->rate_max);
2827 }
2828 return 0;
2829}
2830
2831
2832
2833
2834
2835
2836static void snd_usb_stream_disconnect(struct list_head *head)
2837{
2838 int idx;
2839 struct snd_usb_stream *as;
2840 struct snd_usb_substream *subs;
2841
2842 as = list_entry(head, struct snd_usb_stream, list);
2843 for (idx = 0; idx < 2; idx++) {
2844 subs = &as->substream[idx];
2845 if (!subs->num_formats)
2846 return;
2847 release_substream_urbs(subs, 1);
2848 subs->interface = -1;
2849 }
2850}
2851
2852
2853
2854
2855static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif)
2856{
2857 struct usb_device *dev = chip->dev;
2858 struct usb_host_interface *host_iface;
2859 struct usb_interface *iface;
2860 unsigned char *p1;
2861 int i, j;
2862
2863
2864 host_iface = &usb_ifnum_to_if(dev, ctrlif)->altsetting[0];
2865 if (!(p1 = snd_usb_find_csint_desc(host_iface->extra, host_iface->extralen, NULL, HEADER))) {
2866 snd_printk(KERN_ERR "cannot find HEADER\n");
2867 return -EINVAL;
2868 }
2869 if (! p1[7] || p1[0] < 8 + p1[7]) {
2870 snd_printk(KERN_ERR "invalid HEADER\n");
2871 return -EINVAL;
2872 }
2873
2874
2875
2876
2877 for (i = 0; i < p1[7]; i++) {
2878 struct usb_host_interface *alts;
2879 struct usb_interface_descriptor *altsd;
2880 j = p1[8 + i];
2881 iface = usb_ifnum_to_if(dev, j);
2882 if (!iface) {
2883 snd_printk(KERN_ERR "%d:%u:%d : does not exist\n",
2884 dev->devnum, ctrlif, j);
2885 continue;
2886 }
2887 if (usb_interface_claimed(iface)) {
2888 snd_printdd(KERN_INFO "%d:%d:%d: skipping, already claimed\n", dev->devnum, ctrlif, j);
2889 continue;
2890 }
2891 alts = &iface->altsetting[0];
2892 altsd = get_iface_desc(alts);
2893 if ((altsd->bInterfaceClass == USB_CLASS_AUDIO ||
2894 altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC) &&
2895 altsd->bInterfaceSubClass == USB_SUBCLASS_MIDI_STREAMING) {
2896 if (snd_usb_create_midi_interface(chip, iface, NULL) < 0) {
2897 snd_printk(KERN_ERR "%d:%u:%d: cannot create sequencer device\n", dev->devnum, ctrlif, j);
2898 continue;
2899 }
2900 usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
2901 continue;
2902 }
2903 if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
2904 altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
2905 altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIO_STREAMING) {
2906 snd_printdd(KERN_ERR "%d:%u:%d: skipping non-supported interface %d\n", dev->devnum, ctrlif, j, altsd->bInterfaceClass);
2907
2908 continue;
2909 }
2910 if (snd_usb_get_speed(dev) == USB_SPEED_LOW) {
2911 snd_printk(KERN_ERR "low speed audio streaming not supported\n");
2912 continue;
2913 }
2914 if (! parse_audio_endpoints(chip, j)) {
2915 usb_set_interface(dev, j, 0);
2916 usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
2917 }
2918 }
2919
2920 return 0;
2921}
2922
2923
2924
2925
2926static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
2927 struct usb_interface *iface,
2928 const struct snd_usb_audio_quirk *quirk)
2929{
2930 struct audioformat *fp;
2931 struct usb_host_interface *alts;
2932 int stream, err;
2933 unsigned *rate_table = NULL;
2934
2935 fp = kmemdup(quirk->data, sizeof(*fp), GFP_KERNEL);
2936 if (! fp) {
2937 snd_printk(KERN_ERR "cannot memdup\n");
2938 return -ENOMEM;
2939 }
2940 if (fp->nr_rates > 0) {
2941 rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
2942 if (!rate_table) {
2943 kfree(fp);
2944 return -ENOMEM;
2945 }
2946 memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates);
2947 fp->rate_table = rate_table;
2948 }
2949
2950 stream = (fp->endpoint & USB_DIR_IN)
2951 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
2952 err = add_audio_endpoint(chip, stream, fp);
2953 if (err < 0) {
2954 kfree(fp);
2955 kfree(rate_table);
2956 return err;
2957 }
2958 if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
2959 fp->altset_idx >= iface->num_altsetting) {
2960 kfree(fp);
2961 kfree(rate_table);
2962 return -EINVAL;
2963 }
2964 alts = &iface->altsetting[fp->altset_idx];
2965 fp->datainterval = parse_datainterval(chip, alts);
2966 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
2967 usb_set_interface(chip->dev, fp->iface, 0);
2968 init_usb_pitch(chip->dev, fp->iface, alts, fp);
2969 init_usb_sample_rate(chip->dev, fp->iface, alts, fp, fp->rate_max);
2970 return 0;
2971}
2972
2973
2974
2975
2976static int create_standard_audio_quirk(struct snd_usb_audio *chip,
2977 struct usb_interface *iface,
2978 const struct snd_usb_audio_quirk *quirk)
2979{
2980 struct usb_host_interface *alts;
2981 struct usb_interface_descriptor *altsd;
2982 int err;
2983
2984 alts = &iface->altsetting[0];
2985 altsd = get_iface_desc(alts);
2986 err = parse_audio_endpoints(chip, altsd->bInterfaceNumber);
2987 if (err < 0) {
2988 snd_printk(KERN_ERR "cannot setup if %d: error %d\n",
2989 altsd->bInterfaceNumber, err);
2990 return err;
2991 }
2992
2993 usb_set_interface(chip->dev, altsd->bInterfaceNumber, 0);
2994 return 0;
2995}
2996
2997
2998
2999
3000
3001static int create_uaxx_quirk(struct snd_usb_audio *chip,
3002 struct usb_interface *iface,
3003 const struct snd_usb_audio_quirk *quirk)
3004{
3005 static const struct audioformat ua_format = {
3006 .format = SNDRV_PCM_FORMAT_S24_3LE,
3007 .channels = 2,
3008 .fmt_type = USB_FORMAT_TYPE_I,
3009 .altsetting = 1,
3010 .altset_idx = 1,
3011 .rates = SNDRV_PCM_RATE_CONTINUOUS,
3012 };
3013 struct usb_host_interface *alts;
3014 struct usb_interface_descriptor *altsd;
3015 struct audioformat *fp;
3016 int stream, err;
3017
3018
3019 if (iface->num_altsetting < 2)
3020 return -ENXIO;
3021 alts = &iface->altsetting[1];
3022 altsd = get_iface_desc(alts);
3023
3024 if (altsd->bNumEndpoints == 2) {
3025 static const struct snd_usb_midi_endpoint_info ua700_ep = {
3026 .out_cables = 0x0003,
3027 .in_cables = 0x0003
3028 };
3029 static const struct snd_usb_audio_quirk ua700_quirk = {
3030 .type = QUIRK_MIDI_FIXED_ENDPOINT,
3031 .data = &ua700_ep
3032 };
3033 static const struct snd_usb_midi_endpoint_info uaxx_ep = {
3034 .out_cables = 0x0001,
3035 .in_cables = 0x0001
3036 };
3037 static const struct snd_usb_audio_quirk uaxx_quirk = {
3038 .type = QUIRK_MIDI_FIXED_ENDPOINT,
3039 .data = &uaxx_ep
3040 };
3041 if (chip->usb_id == USB_ID(0x0582, 0x002b))
3042 return snd_usb_create_midi_interface(chip, iface,
3043 &ua700_quirk);
3044 else
3045 return snd_usb_create_midi_interface(chip, iface,
3046 &uaxx_quirk);
3047 }
3048
3049 if (altsd->bNumEndpoints != 1)
3050 return -ENXIO;
3051
3052 fp = kmalloc(sizeof(*fp), GFP_KERNEL);
3053 if (!fp)
3054 return -ENOMEM;
3055 memcpy(fp, &ua_format, sizeof(*fp));
3056
3057 fp->iface = altsd->bInterfaceNumber;
3058 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
3059 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
3060 fp->datainterval = 0;
3061 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
3062
3063 switch (fp->maxpacksize) {
3064 case 0x120:
3065 fp->rate_max = fp->rate_min = 44100;
3066 break;
3067 case 0x138:
3068 case 0x140:
3069 fp->rate_max = fp->rate_min = 48000;
3070 break;
3071 case 0x258:
3072 case 0x260:
3073 fp->rate_max = fp->rate_min = 96000;
3074 break;
3075 default:
3076 snd_printk(KERN_ERR "unknown sample rate\n");
3077 kfree(fp);
3078 return -ENXIO;
3079 }
3080
3081 stream = (fp->endpoint & USB_DIR_IN)
3082 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
3083 err = add_audio_endpoint(chip, stream, fp);
3084 if (err < 0) {
3085 kfree(fp);
3086 return err;
3087 }
3088 usb_set_interface(chip->dev, fp->iface, 0);
3089 return 0;
3090}
3091
3092
3093
3094
3095static int create_ua1000_quirk(struct snd_usb_audio *chip,
3096 struct usb_interface *iface,
3097 const struct snd_usb_audio_quirk *quirk)
3098{
3099 static const struct audioformat ua1000_format = {
3100 .format = SNDRV_PCM_FORMAT_S32_LE,
3101 .fmt_type = USB_FORMAT_TYPE_I,
3102 .altsetting = 1,
3103 .altset_idx = 1,
3104 .attributes = 0,
3105 .rates = SNDRV_PCM_RATE_CONTINUOUS,
3106 };
3107 struct usb_host_interface *alts;
3108 struct usb_interface_descriptor *altsd;
3109 struct audioformat *fp;
3110 int stream, err;
3111
3112 if (iface->num_altsetting != 2)
3113 return -ENXIO;
3114 alts = &iface->altsetting[1];
3115 altsd = get_iface_desc(alts);
3116 if (alts->extralen != 11 || alts->extra[1] != USB_DT_CS_INTERFACE ||
3117 altsd->bNumEndpoints != 1)
3118 return -ENXIO;
3119
3120 fp = kmemdup(&ua1000_format, sizeof(*fp), GFP_KERNEL);
3121 if (!fp)
3122 return -ENOMEM;
3123
3124 fp->channels = alts->extra[4];
3125 fp->iface = altsd->bInterfaceNumber;
3126 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
3127 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
3128 fp->datainterval = parse_datainterval(chip, alts);
3129 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
3130 fp->rate_max = fp->rate_min = combine_triple(&alts->extra[8]);
3131
3132 stream = (fp->endpoint & USB_DIR_IN)
3133 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
3134 err = add_audio_endpoint(chip, stream, fp);
3135 if (err < 0) {
3136 kfree(fp);
3137 return err;
3138 }
3139
3140 usb_set_interface(chip->dev, fp->iface, 0);
3141 return 0;
3142}
3143
3144
3145
3146
3147
3148static int create_ua101_quirk(struct snd_usb_audio *chip,
3149 struct usb_interface *iface,
3150 const struct snd_usb_audio_quirk *quirk)
3151{
3152 static const struct audioformat ua101_format = {
3153 .format = SNDRV_PCM_FORMAT_S32_LE,
3154 .fmt_type = USB_FORMAT_TYPE_I,
3155 .altsetting = 1,
3156 .altset_idx = 1,
3157 .attributes = 0,
3158 .rates = SNDRV_PCM_RATE_CONTINUOUS,
3159 };
3160 struct usb_host_interface *alts;
3161 struct usb_interface_descriptor *altsd;
3162 struct audioformat *fp;
3163 int stream, err;
3164
3165 if (iface->num_altsetting != 2)
3166 return -ENXIO;
3167 alts = &iface->altsetting[1];
3168 altsd = get_iface_desc(alts);
3169 if (alts->extralen != 18 || alts->extra[1] != USB_DT_CS_INTERFACE ||
3170 altsd->bNumEndpoints != 1)
3171 return -ENXIO;
3172
3173 fp = kmemdup(&ua101_format, sizeof(*fp), GFP_KERNEL);
3174 if (!fp)
3175 return -ENOMEM;
3176
3177 fp->channels = alts->extra[11];
3178 fp->iface = altsd->bInterfaceNumber;
3179 fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
3180 fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
3181 fp->datainterval = parse_datainterval(chip, alts);
3182 fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
3183 fp->rate_max = fp->rate_min = combine_triple(&alts->extra[15]);
3184
3185 stream = (fp->endpoint & USB_DIR_IN)
3186 ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
3187 err = add_audio_endpoint(chip, stream, fp);
3188 if (err < 0) {
3189 kfree(fp);
3190 return err;
3191 }
3192
3193 usb_set_interface(chip->dev, fp->iface, 0);
3194 return 0;
3195}
3196
3197static int snd_usb_create_quirk(struct snd_usb_audio *chip,
3198 struct usb_interface *iface,
3199 const struct snd_usb_audio_quirk *quirk);
3200
3201
3202
3203
3204static int create_composite_quirk(struct snd_usb_audio *chip,
3205 struct usb_interface *iface,
3206 const struct snd_usb_audio_quirk *quirk)
3207{
3208 int probed_ifnum = get_iface_desc(iface->altsetting)->bInterfaceNumber;
3209 int err;
3210
3211 for (quirk = quirk->data; quirk->ifnum >= 0; ++quirk) {
3212 iface = usb_ifnum_to_if(chip->dev, quirk->ifnum);
3213 if (!iface)
3214 continue;
3215 if (quirk->ifnum != probed_ifnum &&
3216 usb_interface_claimed(iface))
3217 continue;
3218 err = snd_usb_create_quirk(chip, iface, quirk);
3219 if (err < 0)
3220 return err;
3221 if (quirk->ifnum != probed_ifnum)
3222 usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
3223 }
3224 return 0;
3225}
3226
3227static int ignore_interface_quirk(struct snd_usb_audio *chip,
3228 struct usb_interface *iface,
3229 const struct snd_usb_audio_quirk *quirk)
3230{
3231 return 0;
3232}
3233
3234
3235
3236
3237
3238
3239#define EXTIGY_FIRMWARE_SIZE_OLD 794
3240#define EXTIGY_FIRMWARE_SIZE_NEW 483
3241
3242static int snd_usb_extigy_boot_quirk(struct usb_device *dev, struct usb_interface *intf)
3243{
3244 struct usb_host_config *config = dev->actconfig;
3245 int err;
3246
3247 if (le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_OLD ||
3248 le16_to_cpu(get_cfg_desc(config)->wTotalLength) == EXTIGY_FIRMWARE_SIZE_NEW) {
3249 snd_printdd("sending Extigy boot sequence...\n");
3250
3251 err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev,0),
3252 0x10, 0x43, 0x0001, 0x000a, NULL, 0, 1000);
3253 if (err < 0) snd_printdd("error sending boot message: %d\n", err);
3254 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
3255 &dev->descriptor, sizeof(dev->descriptor));
3256 config = dev->actconfig;
3257 if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
3258 err = usb_reset_configuration(dev);
3259 if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
3260 snd_printdd("extigy_boot: new boot length = %d\n",
3261 le16_to_cpu(get_cfg_desc(config)->wTotalLength));
3262 return -ENODEV;
3263 }
3264 return 0;
3265}
3266
3267static int snd_usb_audigy2nx_boot_quirk(struct usb_device *dev)
3268{
3269 u8 buf = 1;
3270
3271 snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), 0x2a,
3272 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER,
3273 0, 0, &buf, 1, 1000);
3274 if (buf == 0) {
3275 snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), 0x29,
3276 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
3277 1, 2000, NULL, 0, 1000);
3278 return -ENODEV;
3279 }
3280 return 0;
3281}
3282
3283
3284
3285
3286
3287static int snd_usb_cm106_write_int_reg(struct usb_device *dev, int reg, u16 value)
3288{
3289 u8 buf[4];
3290 buf[0] = 0x20;
3291 buf[1] = value & 0xff;
3292 buf[2] = (value >> 8) & 0xff;
3293 buf[3] = reg;
3294 return snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION,
3295 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_ENDPOINT,
3296 0, 0, &buf, 4, 1000);
3297}
3298
3299static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
3300{
3301
3302
3303
3304
3305 return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
3306}
3307
3308
3309
3310
3311
3312
3313
3314static int snd_usb_cm6206_boot_quirk(struct usb_device *dev)
3315{
3316 int err, reg;
3317 int val[] = {0x200c, 0x3000, 0xf800, 0x143f, 0x0000, 0x3000};
3318
3319 for (reg = 0; reg < ARRAY_SIZE(val); reg++) {
3320 err = snd_usb_cm106_write_int_reg(dev, reg, val[reg]);
3321 if (err < 0)
3322 return err;
3323 }
3324
3325 return err;
3326}
3327
3328
3329
3330
3331#define AUDIOPHILE_SET 0x01
3332#define AUDIOPHILE_SET_DTS 0x02
3333#define AUDIOPHILE_SET_96K 0x04
3334#define AUDIOPHILE_SET_24B 0x08
3335#define AUDIOPHILE_SET_DI 0x10
3336#define AUDIOPHILE_SET_MASK 0x1F
3337#define AUDIOPHILE_SET_24B_48K_DI 0x19
3338#define AUDIOPHILE_SET_24B_48K_NOTDI 0x09
3339#define AUDIOPHILE_SET_16B_48K_DI 0x11
3340#define AUDIOPHILE_SET_16B_48K_NOTDI 0x01
3341
3342static int audiophile_skip_setting_quirk(struct snd_usb_audio *chip,
3343 int iface, int altno)
3344{
3345
3346
3347
3348 usb_set_interface(chip->dev, iface, 0);
3349
3350 if (device_setup[chip->index] & AUDIOPHILE_SET) {
3351 if ((device_setup[chip->index] & AUDIOPHILE_SET_DTS)
3352 && altno != 6)
3353 return 1;
3354 if ((device_setup[chip->index] & AUDIOPHILE_SET_96K)
3355 && altno != 1)
3356 return 1;
3357 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3358 AUDIOPHILE_SET_24B_48K_DI && altno != 2)
3359 return 1;
3360 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3361 AUDIOPHILE_SET_24B_48K_NOTDI && altno != 3)
3362 return 1;
3363 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3364 AUDIOPHILE_SET_16B_48K_DI && altno != 4)
3365 return 1;
3366 if ((device_setup[chip->index] & AUDIOPHILE_SET_MASK) ==
3367 AUDIOPHILE_SET_16B_48K_NOTDI && altno != 5)
3368 return 1;
3369 }
3370 return 0;
3371}
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381static int snd_usb_create_quirk(struct snd_usb_audio *chip,
3382 struct usb_interface *iface,
3383 const struct snd_usb_audio_quirk *quirk)
3384{
3385 typedef int (*quirk_func_t)(struct snd_usb_audio *, struct usb_interface *,
3386 const struct snd_usb_audio_quirk *);
3387 static const quirk_func_t quirk_funcs[] = {
3388 [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk,
3389 [QUIRK_COMPOSITE] = create_composite_quirk,
3390 [QUIRK_MIDI_STANDARD_INTERFACE] = snd_usb_create_midi_interface,
3391 [QUIRK_MIDI_FIXED_ENDPOINT] = snd_usb_create_midi_interface,
3392 [QUIRK_MIDI_YAMAHA] = snd_usb_create_midi_interface,
3393 [QUIRK_MIDI_MIDIMAN] = snd_usb_create_midi_interface,
3394 [QUIRK_MIDI_NOVATION] = snd_usb_create_midi_interface,
3395 [QUIRK_MIDI_FASTLANE] = snd_usb_create_midi_interface,
3396 [QUIRK_MIDI_EMAGIC] = snd_usb_create_midi_interface,
3397 [QUIRK_MIDI_CME] = snd_usb_create_midi_interface,
3398 [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk,
3399 [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk,
3400 [QUIRK_AUDIO_EDIROL_UA1000] = create_ua1000_quirk,
3401 [QUIRK_AUDIO_EDIROL_UA101] = create_ua101_quirk,
3402 [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk
3403 };
3404
3405 if (quirk->type < QUIRK_TYPE_COUNT) {
3406 return quirk_funcs[quirk->type](chip, iface, quirk);
3407 } else {
3408 snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
3409 return -ENXIO;
3410 }
3411}
3412
3413
3414
3415
3416
3417static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
3418{
3419 struct snd_usb_audio *chip = entry->private_data;
3420 if (!chip->shutdown)
3421 snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
3422}
3423
3424static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
3425{
3426 struct snd_usb_audio *chip = entry->private_data;
3427 if (!chip->shutdown)
3428 snd_iprintf(buffer, "%04x:%04x\n",
3429 USB_ID_VENDOR(chip->usb_id),
3430 USB_ID_PRODUCT(chip->usb_id));
3431}
3432
3433static void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
3434{
3435 struct snd_info_entry *entry;
3436 if (!snd_card_proc_new(chip->card, "usbbus", &entry))
3437 snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read);
3438 if (!snd_card_proc_new(chip->card, "usbid", &entry))
3439 snd_info_set_text_ops(entry, chip, proc_audio_usbid_read);
3440}
3441
3442
3443
3444
3445
3446
3447
3448
3449static int snd_usb_audio_free(struct snd_usb_audio *chip)
3450{
3451 kfree(chip);
3452 return 0;
3453}
3454
3455static int snd_usb_audio_dev_free(struct snd_device *device)
3456{
3457 struct snd_usb_audio *chip = device->device_data;
3458 return snd_usb_audio_free(chip);
3459}
3460
3461
3462
3463
3464
3465static int snd_usb_audio_create(struct usb_device *dev, int idx,
3466 const struct snd_usb_audio_quirk *quirk,
3467 struct snd_usb_audio **rchip)
3468{
3469 struct snd_card *card;
3470 struct snd_usb_audio *chip;
3471 int err, len;
3472 char component[14];
3473 static struct snd_device_ops ops = {
3474 .dev_free = snd_usb_audio_dev_free,
3475 };
3476
3477 *rchip = NULL;
3478
3479 if (snd_usb_get_speed(dev) != USB_SPEED_LOW &&
3480 snd_usb_get_speed(dev) != USB_SPEED_FULL &&
3481 snd_usb_get_speed(dev) != USB_SPEED_HIGH) {
3482 snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev));
3483 return -ENXIO;
3484 }
3485
3486 err = snd_card_create(index[idx], id[idx], THIS_MODULE, 0, &card);
3487 if (err < 0) {
3488 snd_printk(KERN_ERR "cannot create card instance %d\n", idx);
3489 return err;
3490 }
3491
3492 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
3493 if (! chip) {
3494 snd_card_free(card);
3495 return -ENOMEM;
3496 }
3497
3498 chip->index = idx;
3499 chip->dev = dev;
3500 chip->card = card;
3501 chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
3502 le16_to_cpu(dev->descriptor.idProduct));
3503 INIT_LIST_HEAD(&chip->pcm_list);
3504 INIT_LIST_HEAD(&chip->midi_list);
3505 INIT_LIST_HEAD(&chip->mixer_list);
3506
3507 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
3508 snd_usb_audio_free(chip);
3509 snd_card_free(card);
3510 return err;
3511 }
3512
3513 strcpy(card->driver, "USB-Audio");
3514 sprintf(component, "USB%04x:%04x",
3515 USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id));
3516 snd_component_add(card, component);
3517
3518
3519 if (quirk && quirk->product_name) {
3520 strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname));
3521 } else {
3522 if (!dev->descriptor.iProduct ||
3523 usb_string(dev, dev->descriptor.iProduct,
3524 card->shortname, sizeof(card->shortname)) <= 0) {
3525
3526 sprintf(card->shortname, "USB Device %#04x:%#04x",
3527 USB_ID_VENDOR(chip->usb_id),
3528 USB_ID_PRODUCT(chip->usb_id));
3529 }
3530 }
3531
3532
3533 if (quirk && quirk->vendor_name) {
3534 len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname));
3535 } else {
3536 if (dev->descriptor.iManufacturer)
3537 len = usb_string(dev, dev->descriptor.iManufacturer,
3538 card->longname, sizeof(card->longname));
3539 else
3540 len = 0;
3541
3542 }
3543 if (len > 0)
3544 strlcat(card->longname, " ", sizeof(card->longname));
3545
3546 strlcat(card->longname, card->shortname, sizeof(card->longname));
3547
3548 len = strlcat(card->longname, " at ", sizeof(card->longname));
3549
3550 if (len < sizeof(card->longname))
3551 usb_make_path(dev, card->longname + len, sizeof(card->longname) - len);
3552
3553 strlcat(card->longname,
3554 snd_usb_get_speed(dev) == USB_SPEED_LOW ? ", low speed" :
3555 snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" :
3556 ", high speed",
3557 sizeof(card->longname));
3558
3559 snd_usb_audio_create_proc(chip);
3560
3561 *rchip = chip;
3562 return 0;
3563}
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576static void *snd_usb_audio_probe(struct usb_device *dev,
3577 struct usb_interface *intf,
3578 const struct usb_device_id *usb_id)
3579{
3580 const struct snd_usb_audio_quirk *quirk = (const struct snd_usb_audio_quirk *)usb_id->driver_info;
3581 int i, err;
3582 struct snd_usb_audio *chip;
3583 struct usb_host_interface *alts;
3584 int ifnum;
3585 u32 id;
3586
3587 alts = &intf->altsetting[0];
3588 ifnum = get_iface_desc(alts)->bInterfaceNumber;
3589 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
3590 le16_to_cpu(dev->descriptor.idProduct));
3591
3592 if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum)
3593 goto __err_val;
3594
3595
3596
3597 if (id == USB_ID(0x041e, 0x3000)) {
3598 if (snd_usb_extigy_boot_quirk(dev, intf) < 0)
3599 goto __err_val;
3600 }
3601
3602 if (id == USB_ID(0x041e, 0x3020)) {
3603 if (snd_usb_audigy2nx_boot_quirk(dev) < 0)
3604 goto __err_val;
3605 }
3606
3607
3608 if (id == USB_ID(0x10f5, 0x0200)) {
3609 if (snd_usb_cm106_boot_quirk(dev) < 0)
3610 goto __err_val;
3611 }
3612
3613
3614 if (id == USB_ID(0x0d8c, 0x0102)) {
3615 if (snd_usb_cm6206_boot_quirk(dev) < 0)
3616 goto __err_val;
3617 }
3618
3619
3620
3621
3622
3623
3624 chip = NULL;
3625 mutex_lock(®ister_mutex);
3626 for (i = 0; i < SNDRV_CARDS; i++) {
3627 if (usb_chip[i] && usb_chip[i]->dev == dev) {
3628 if (usb_chip[i]->shutdown) {
3629 snd_printk(KERN_ERR "USB device is in the shutdown state, cannot create a card instance\n");
3630 goto __error;
3631 }
3632 chip = usb_chip[i];
3633 break;
3634 }
3635 }
3636 if (! chip) {
3637
3638
3639
3640 for (i = 0; i < SNDRV_CARDS; i++)
3641 if (enable[i] && ! usb_chip[i] &&
3642 (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) &&
3643 (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) {
3644 if (snd_usb_audio_create(dev, i, quirk, &chip) < 0) {
3645 goto __error;
3646 }
3647 snd_card_set_dev(chip->card, &intf->dev);
3648 break;
3649 }
3650 if (!chip) {
3651 printk(KERN_ERR "no available usb audio device\n");
3652 goto __error;
3653 }
3654 }
3655
3656 err = 1;
3657 if (quirk && quirk->ifnum != QUIRK_NO_INTERFACE) {
3658
3659 if ((err = snd_usb_create_quirk(chip, intf, quirk)) < 0)
3660 goto __error;
3661 }
3662
3663 if (err > 0) {
3664
3665 if (snd_usb_create_streams(chip, ifnum) < 0 ||
3666 snd_usb_create_mixer(chip, ifnum, ignore_ctl_error) < 0) {
3667 goto __error;
3668 }
3669 }
3670
3671
3672 if (snd_card_register(chip->card) < 0) {
3673 goto __error;
3674 }
3675
3676 usb_chip[chip->index] = chip;
3677 chip->num_interfaces++;
3678 mutex_unlock(®ister_mutex);
3679 return chip;
3680
3681 __error:
3682 if (chip && !chip->num_interfaces)
3683 snd_card_free(chip->card);
3684 mutex_unlock(®ister_mutex);
3685 __err_val:
3686 return NULL;
3687}
3688
3689
3690
3691
3692
3693static void snd_usb_audio_disconnect(struct usb_device *dev, void *ptr)
3694{
3695 struct snd_usb_audio *chip;
3696 struct snd_card *card;
3697 struct list_head *p;
3698
3699 if (ptr == (void *)-1L)
3700 return;
3701
3702 chip = ptr;
3703 card = chip->card;
3704 mutex_lock(®ister_mutex);
3705 chip->shutdown = 1;
3706 chip->num_interfaces--;
3707 if (chip->num_interfaces <= 0) {
3708 snd_card_disconnect(card);
3709
3710 list_for_each(p, &chip->pcm_list) {
3711 snd_usb_stream_disconnect(p);
3712 }
3713
3714 list_for_each(p, &chip->midi_list) {
3715 snd_usbmidi_disconnect(p);
3716 }
3717
3718 list_for_each(p, &chip->mixer_list) {
3719 snd_usb_mixer_disconnect(p);
3720 }
3721 usb_chip[chip->index] = NULL;
3722 mutex_unlock(®ister_mutex);
3723 snd_card_free_when_closed(card);
3724 } else {
3725 mutex_unlock(®ister_mutex);
3726 }
3727}
3728
3729
3730
3731
3732static int usb_audio_probe(struct usb_interface *intf,
3733 const struct usb_device_id *id)
3734{
3735 void *chip;
3736 chip = snd_usb_audio_probe(interface_to_usbdev(intf), intf, id);
3737 if (chip) {
3738 usb_set_intfdata(intf, chip);
3739 return 0;
3740 } else
3741 return -EIO;
3742}
3743
3744static void usb_audio_disconnect(struct usb_interface *intf)
3745{
3746 snd_usb_audio_disconnect(interface_to_usbdev(intf),
3747 usb_get_intfdata(intf));
3748}
3749
3750#ifdef CONFIG_PM
3751static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message)
3752{
3753 struct snd_usb_audio *chip = usb_get_intfdata(intf);
3754 struct list_head *p;
3755 struct snd_usb_stream *as;
3756
3757 if (chip == (void *)-1L)
3758 return 0;
3759
3760 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot);
3761 if (!chip->num_suspended_intf++) {
3762 list_for_each(p, &chip->pcm_list) {
3763 as = list_entry(p, struct snd_usb_stream, list);
3764 snd_pcm_suspend_all(as->pcm);
3765 }
3766 }
3767
3768 return 0;
3769}
3770
3771static int usb_audio_resume(struct usb_interface *intf)
3772{
3773 struct snd_usb_audio *chip = usb_get_intfdata(intf);
3774
3775 if (chip == (void *)-1L)
3776 return 0;
3777 if (--chip->num_suspended_intf)
3778 return 0;
3779
3780
3781
3782
3783
3784 snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
3785
3786 return 0;
3787}
3788#endif
3789
3790static int __init snd_usb_audio_init(void)
3791{
3792 if (nrpacks < 1 || nrpacks > MAX_PACKS) {
3793 printk(KERN_WARNING "invalid nrpacks value.\n");
3794 return -EINVAL;
3795 }
3796 return usb_register(&usb_audio_driver);
3797}
3798
3799
3800static void __exit snd_usb_audio_cleanup(void)
3801{
3802 usb_deregister(&usb_audio_driver);
3803}
3804
3805module_init(snd_usb_audio_init);
3806module_exit(snd_usb_audio_cleanup);
3807