Lines Matching +full:scaled +full:- +full:sync
1 // SPDX-License-Identifier: GPL-2.0-or-later
41 * expect the payload to carry Q10.14 / Q16.16 formatted sync information
76 if (u->buffer_size) in release_urb_ctx()
77 usb_free_coherent(u->ep->chip->dev, u->buffer_size, in release_urb_ctx()
78 u->urb->transfer_buffer, in release_urb_ctx()
79 u->urb->transfer_dma); in release_urb_ctx()
80 usb_free_urb(u->urb); in release_urb_ctx()
81 u->urb = NULL; in release_urb_ctx()
87 case -ENODEV: in usb_error_string()
89 case -ENOENT: in usb_error_string()
91 case -EPIPE: in usb_error_string()
93 case -ENOSPC: in usb_error_string()
95 case -ESHUTDOWN: in usb_error_string()
97 case -EHOSTUNREACH: in usb_error_string()
99 case -EINVAL: in usb_error_string()
100 case -EAGAIN: in usb_error_string()
101 case -EFBIG: in usb_error_string()
102 case -EMSGSIZE: in usb_error_string()
119 return ep->sync_master && in snd_usb_endpoint_implicit_feedback_sink()
120 ep->sync_master->type == SND_USB_ENDPOINT_TYPE_DATA && in snd_usb_endpoint_implicit_feedback_sink()
121 ep->type == SND_USB_ENDPOINT_TYPE_DATA && in snd_usb_endpoint_implicit_feedback_sink()
122 usb_pipeout(ep->pipe); in snd_usb_endpoint_implicit_feedback_sink()
126 * For streaming based on information derived from sync endpoints,
137 if (ep->fill_max) in snd_usb_endpoint_slave_next_packet_size()
138 return ep->maxframesize; in snd_usb_endpoint_slave_next_packet_size()
140 spin_lock_irqsave(&ep->lock, flags); in snd_usb_endpoint_slave_next_packet_size()
141 ep->phase = (ep->phase & 0xffff) in snd_usb_endpoint_slave_next_packet_size()
142 + (ep->freqm << ep->datainterval); in snd_usb_endpoint_slave_next_packet_size()
143 ret = min(ep->phase >> 16, ep->maxframesize); in snd_usb_endpoint_slave_next_packet_size()
144 spin_unlock_irqrestore(&ep->lock, flags); in snd_usb_endpoint_slave_next_packet_size()
158 if (ep->fill_max) in snd_usb_endpoint_next_packet_size()
159 return ep->maxframesize; in snd_usb_endpoint_next_packet_size()
161 ep->sample_accum += ep->sample_rem; in snd_usb_endpoint_next_packet_size()
162 if (ep->sample_accum >= ep->pps) { in snd_usb_endpoint_next_packet_size()
163 ep->sample_accum -= ep->pps; in snd_usb_endpoint_next_packet_size()
164 ret = ep->packsize[1]; in snd_usb_endpoint_next_packet_size()
166 ret = ep->packsize[0]; in snd_usb_endpoint_next_packet_size()
175 if (ep->retire_data_urb) in retire_outbound_urb()
176 ep->retire_data_urb(ep->data_subs, urb_ctx->urb); in retire_outbound_urb()
182 struct urb *urb = urb_ctx->urb; in retire_inbound_urb()
184 if (unlikely(ep->skip_packets > 0)) { in retire_inbound_urb()
185 ep->skip_packets--; in retire_inbound_urb()
189 if (ep->sync_slave) in retire_inbound_urb()
190 snd_usb_handle_sync_urb(ep->sync_slave, ep, urb); in retire_inbound_urb()
192 if (ep->retire_data_urb) in retire_inbound_urb()
193 ep->retire_data_urb(ep->data_subs, urb); in retire_inbound_urb()
199 struct urb *urb = ctx->urb; in prepare_silent_urb()
206 if (ep->chip->tx_length_quirk) in prepare_silent_urb()
209 for (i = 0; i < ctx->packets; ++i) { in prepare_silent_urb()
214 if (ctx->packet_size[i]) in prepare_silent_urb()
215 counts = ctx->packet_size[i]; in prepare_silent_urb()
216 else if (ep->sync_master) in prepare_silent_urb()
221 length = counts * ep->stride; /* number of silent bytes */ in prepare_silent_urb()
222 offset = offs * ep->stride + extra * i; in prepare_silent_urb()
223 urb->iso_frame_desc[i].offset = offset; in prepare_silent_urb()
224 urb->iso_frame_desc[i].length = length + extra; in prepare_silent_urb()
227 memcpy(urb->transfer_buffer + offset, in prepare_silent_urb()
230 memset(urb->transfer_buffer + offset + extra, in prepare_silent_urb()
231 ep->silence_value, length); in prepare_silent_urb()
235 urb->number_of_packets = ctx->packets; in prepare_silent_urb()
236 urb->transfer_buffer_length = offs * ep->stride + ctx->packets * extra; in prepare_silent_urb()
245 struct urb *urb = ctx->urb; in prepare_outbound_urb()
246 unsigned char *cp = urb->transfer_buffer; in prepare_outbound_urb()
248 urb->dev = ep->chip->dev; /* we need to set this at each time */ in prepare_outbound_urb()
250 switch (ep->type) { in prepare_outbound_urb()
252 if (ep->prepare_data_urb) { in prepare_outbound_urb()
253 ep->prepare_data_urb(ep->data_subs, urb); in prepare_outbound_urb()
261 if (snd_usb_get_speed(ep->chip->dev) >= USB_SPEED_HIGH) { in prepare_outbound_urb()
266 urb->iso_frame_desc[0].length = 4; in prepare_outbound_urb()
267 urb->iso_frame_desc[0].offset = 0; in prepare_outbound_urb()
268 cp[0] = ep->freqn; in prepare_outbound_urb()
269 cp[1] = ep->freqn >> 8; in prepare_outbound_urb()
270 cp[2] = ep->freqn >> 16; in prepare_outbound_urb()
271 cp[3] = ep->freqn >> 24; in prepare_outbound_urb()
277 urb->iso_frame_desc[0].length = 3; in prepare_outbound_urb()
278 urb->iso_frame_desc[0].offset = 0; in prepare_outbound_urb()
279 cp[0] = ep->freqn >> 2; in prepare_outbound_urb()
280 cp[1] = ep->freqn >> 10; in prepare_outbound_urb()
281 cp[2] = ep->freqn >> 18; in prepare_outbound_urb()
289 * Prepare a CAPTURE or SYNC urb for submission to the bus.
295 struct urb *urb = urb_ctx->urb; in prepare_inbound_urb()
297 urb->dev = ep->chip->dev; /* we need to set this at each time */ in prepare_inbound_urb()
299 switch (ep->type) { in prepare_inbound_urb()
302 for (i = 0; i < urb_ctx->packets; i++) { in prepare_inbound_urb()
303 urb->iso_frame_desc[i].offset = offs; in prepare_inbound_urb()
304 urb->iso_frame_desc[i].length = ep->curpacksize; in prepare_inbound_urb()
305 offs += ep->curpacksize; in prepare_inbound_urb()
308 urb->transfer_buffer_length = offs; in prepare_inbound_urb()
309 urb->number_of_packets = urb_ctx->packets; in prepare_inbound_urb()
313 urb->iso_frame_desc[0].length = min(4u, ep->syncmaxsize); in prepare_inbound_urb()
314 urb->iso_frame_desc[0].offset = 0; in prepare_inbound_urb()
321 * from ep->ready_playback_urbs and in case there aren't any available
330 * driven by dedicated sync endpoints, URBs are immediately re-submitted
335 while (test_bit(EP_FLAG_RUNNING, &ep->flags)) { in queue_pending_output_urbs()
342 spin_lock_irqsave(&ep->lock, flags); in queue_pending_output_urbs()
343 if (ep->next_packet_read_pos != ep->next_packet_write_pos) { in queue_pending_output_urbs()
344 packet = ep->next_packet + ep->next_packet_read_pos; in queue_pending_output_urbs()
345 ep->next_packet_read_pos++; in queue_pending_output_urbs()
346 ep->next_packet_read_pos %= MAX_URBS; in queue_pending_output_urbs()
349 if (!list_empty(&ep->ready_playback_urbs)) { in queue_pending_output_urbs()
350 ctx = list_first_entry(&ep->ready_playback_urbs, in queue_pending_output_urbs()
352 list_del_init(&ctx->ready_list); in queue_pending_output_urbs()
355 spin_unlock_irqrestore(&ep->lock, flags); in queue_pending_output_urbs()
361 for (i = 0; i < packet->packets; i++) in queue_pending_output_urbs()
362 ctx->packet_size[i] = packet->packet_size[i]; in queue_pending_output_urbs()
367 err = usb_submit_urb(ctx->urb, GFP_ATOMIC); in queue_pending_output_urbs()
369 usb_audio_err(ep->chip, in queue_pending_output_urbs()
371 ctx->index, err, ctx->urb); in queue_pending_output_urbs()
373 set_bit(ctx->index, &ep->active_mask); in queue_pending_output_urbs()
382 struct snd_urb_ctx *ctx = urb->context; in snd_complete_urb()
383 struct snd_usb_endpoint *ep = ctx->ep; in snd_complete_urb()
388 if (unlikely(urb->status == -ENOENT || /* unlinked */ in snd_complete_urb()
389 urb->status == -ENODEV || /* device removed */ in snd_complete_urb()
390 urb->status == -ECONNRESET || /* unlinked */ in snd_complete_urb()
391 urb->status == -ESHUTDOWN)) /* device disabled */ in snd_complete_urb()
394 if (unlikely(atomic_read(&ep->chip->shutdown))) in snd_complete_urb()
397 if (unlikely(!test_bit(EP_FLAG_RUNNING, &ep->flags))) in snd_complete_urb()
400 if (usb_pipeout(ep->pipe)) { in snd_complete_urb()
403 if (unlikely(!test_bit(EP_FLAG_RUNNING, &ep->flags))) in snd_complete_urb()
407 spin_lock_irqsave(&ep->lock, flags); in snd_complete_urb()
408 list_add_tail(&ctx->ready_list, &ep->ready_playback_urbs); in snd_complete_urb()
409 spin_unlock_irqrestore(&ep->lock, flags); in snd_complete_urb()
417 if (unlikely(!test_bit(EP_FLAG_RUNNING, &ep->flags))) in snd_complete_urb()
422 if (unlikely(!test_bit(EP_FLAG_RUNNING, &ep->flags))) in snd_complete_urb()
432 usb_audio_err(ep->chip, "cannot submit urb (err = %d)\n", err); in snd_complete_urb()
433 if (ep->data_subs && ep->data_subs->pcm_substream) { in snd_complete_urb()
434 substream = ep->data_subs->pcm_substream; in snd_complete_urb()
439 clear_bit(ctx->index, &ep->active_mask); in snd_complete_urb()
455 * New endpoints will be added to chip->ep_list and must be freed by
471 mutex_lock(&chip->mutex); in snd_usb_add_endpoint()
473 list_for_each_entry(ep, &chip->ep_list, list) { in snd_usb_add_endpoint()
474 if (ep->ep_num == ep_num && in snd_usb_add_endpoint()
475 ep->iface == alts->desc.bInterfaceNumber && in snd_usb_add_endpoint()
476 ep->altsetting == alts->desc.bAlternateSetting) { in snd_usb_add_endpoint()
477 usb_audio_dbg(ep->chip, in snd_usb_add_endpoint()
478 "Re-using EP %x in iface %d,%d @%p\n", in snd_usb_add_endpoint()
479 ep_num, ep->iface, ep->altsetting, ep); in snd_usb_add_endpoint()
486 type == SND_USB_ENDPOINT_TYPE_DATA ? "data" : "sync", in snd_usb_add_endpoint()
493 ep->chip = chip; in snd_usb_add_endpoint()
494 spin_lock_init(&ep->lock); in snd_usb_add_endpoint()
495 ep->type = type; in snd_usb_add_endpoint()
496 ep->ep_num = ep_num; in snd_usb_add_endpoint()
497 ep->iface = alts->desc.bInterfaceNumber; in snd_usb_add_endpoint()
498 ep->altsetting = alts->desc.bAlternateSetting; in snd_usb_add_endpoint()
499 INIT_LIST_HEAD(&ep->ready_playback_urbs); in snd_usb_add_endpoint()
503 ep->pipe = usb_sndisocpipe(chip->dev, ep_num); in snd_usb_add_endpoint()
505 ep->pipe = usb_rcvisocpipe(chip->dev, ep_num); in snd_usb_add_endpoint()
508 if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && in snd_usb_add_endpoint()
509 get_endpoint(alts, 1)->bRefresh >= 1 && in snd_usb_add_endpoint()
510 get_endpoint(alts, 1)->bRefresh <= 9) in snd_usb_add_endpoint()
511 ep->syncinterval = get_endpoint(alts, 1)->bRefresh; in snd_usb_add_endpoint()
512 else if (snd_usb_get_speed(chip->dev) == USB_SPEED_FULL) in snd_usb_add_endpoint()
513 ep->syncinterval = 1; in snd_usb_add_endpoint()
514 else if (get_endpoint(alts, 1)->bInterval >= 1 && in snd_usb_add_endpoint()
515 get_endpoint(alts, 1)->bInterval <= 16) in snd_usb_add_endpoint()
516 ep->syncinterval = get_endpoint(alts, 1)->bInterval - 1; in snd_usb_add_endpoint()
518 ep->syncinterval = 3; in snd_usb_add_endpoint()
520 ep->syncmaxsize = le16_to_cpu(get_endpoint(alts, 1)->wMaxPacketSize); in snd_usb_add_endpoint()
523 list_add_tail(&ep->list, &chip->ep_list); in snd_usb_add_endpoint()
525 ep->is_implicit_feedback = 0; in snd_usb_add_endpoint()
528 mutex_unlock(&chip->mutex); in snd_usb_add_endpoint()
542 alive = bitmap_weight(&ep->active_mask, ep->nurbs); in wait_clear_urbs()
550 usb_audio_err(ep->chip, in wait_clear_urbs()
552 alive, ep->ep_num); in wait_clear_urbs()
553 clear_bit(EP_FLAG_STOPPING, &ep->flags); in wait_clear_urbs()
555 ep->data_subs = NULL; in wait_clear_urbs()
556 ep->sync_slave = NULL; in wait_clear_urbs()
557 ep->retire_data_urb = NULL; in wait_clear_urbs()
558 ep->prepare_data_urb = NULL; in wait_clear_urbs()
563 /* sync the pending stop operation;
568 if (ep && test_bit(EP_FLAG_STOPPING, &ep->flags)) in snd_usb_endpoint_sync_pending_stop()
579 clear_bit(EP_FLAG_RUNNING, &ep->flags); in deactivate_urbs()
581 INIT_LIST_HEAD(&ep->ready_playback_urbs); in deactivate_urbs()
582 ep->next_packet_read_pos = 0; in deactivate_urbs()
583 ep->next_packet_write_pos = 0; in deactivate_urbs()
585 for (i = 0; i < ep->nurbs; i++) { in deactivate_urbs()
586 if (test_bit(i, &ep->active_mask)) { in deactivate_urbs()
587 if (!test_and_set_bit(i, &ep->unlink_mask)) { in deactivate_urbs()
588 struct urb *u = ep->urb[i].urb; in deactivate_urbs()
605 ep->retire_data_urb = NULL; in release_urbs()
606 ep->prepare_data_urb = NULL; in release_urbs()
612 for (i = 0; i < ep->nurbs; i++) in release_urbs()
613 release_urb_ctx(&ep->urb[i]); in release_urbs()
615 usb_free_coherent(ep->chip->dev, SYNC_URBS * 4, in release_urbs()
616 ep->syncbuf, ep->sync_dma); in release_urbs()
618 ep->syncbuf = NULL; in release_urbs()
619 ep->nurbs = 0; in release_urbs()
638 int tx_length_quirk = (ep->chip->tx_length_quirk && in check_ep_params()
639 usb_pipeout(ep->pipe)); in check_ep_params()
642 if (pcm_format == SNDRV_PCM_FORMAT_DSD_U16_LE && fmt->dsd_dop) { in check_ep_params()
651 ret = ret && (ep->datainterval == fmt->datainterval); in check_ep_params()
652 ret = ret && (ep->stride == frame_bits >> 3); in check_ep_params()
656 ret = ret && (ep->silence_value == 0x80); in check_ep_params()
663 ret = ret && (ep->silence_value == 0x69); in check_ep_params()
666 ret = ret && (ep->silence_value == 0); in check_ep_params()
670 ret = ret && (ep->freqmax == ep->freqn + (ep->freqn >> 1)); in check_ep_params()
676 * the data interval is more than 1 (i.e. ep->datainterval > 0), in check_ep_params()
681 * (ep->freqmax << ep->datainterval overflows at 8.192 MHz for the in check_ep_params()
683 * USB high speed, noting that ep->freqmax is in units of in check_ep_params()
686 maxsize = (((ep->freqmax << ep->datainterval) + 0xffff) >> 16) * in check_ep_params()
691 if (ep->maxpacksize && ep->maxpacksize < maxsize) { in check_ep_params()
693 unsigned int data_maxsize = maxsize = ep->maxpacksize; in check_ep_params()
697 data_maxsize -= sizeof(__le32); in check_ep_params()
698 ret = ret && (ep->freqmax == (data_maxsize / (frame_bits >> 3)) in check_ep_params()
699 << (16 - ep->datainterval)); in check_ep_params()
702 if (ep->fill_max) in check_ep_params()
703 ret = ret && (ep->curpacksize == ep->maxpacksize); in check_ep_params()
705 ret = ret && (ep->curpacksize == maxsize); in check_ep_params()
707 if (snd_usb_get_speed(ep->chip->dev) != USB_SPEED_FULL) { in check_ep_params()
708 packs_per_ms = 8 >> ep->datainterval; in check_ep_params()
716 1U << sync_ep->syncinterval); in check_ep_params()
717 max_packs_per_urb = max(1u, max_packs_per_urb >> ep->datainterval); in check_ep_params()
724 * Playback endpoints with implicit sync much use the same parameters in check_ep_params()
727 if (usb_pipein(ep->pipe) || in check_ep_params()
737 if (snd_usb_get_speed(ep->chip->dev) == USB_SPEED_WIRELESS) { in check_ep_params()
738 int interval = ep->datainterval; in check_ep_params()
749 ret = ret && (ep->nurbs == MAX_URBS); in check_ep_params()
752 * Playback endpoints without implicit sync are adjusted so that in check_ep_params()
759 minsize = (ep->freqn >> (16 - ep->datainterval)) * in check_ep_params()
761 /* with sync from device, assume it can be 12% lower */ in check_ep_params()
763 minsize -= minsize >> 3; in check_ep_params()
776 ret = ret && (ep->max_urb_frames == in check_ep_params()
782 ret = ret && (ep->nurbs == min(max_urbs, in check_ep_params()
786 ret = ret && (ep->datainterval == fmt->datainterval); in check_ep_params()
787 ret = ret && (ep->maxpacksize == fmt->maxpacksize); in check_ep_params()
789 (ep->fill_max == !!(fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX)); in check_ep_params()
810 int tx_length_quirk = (ep->chip->tx_length_quirk && in data_ep_set_params()
811 usb_pipeout(ep->pipe)); in data_ep_set_params()
813 if (pcm_format == SNDRV_PCM_FORMAT_DSD_U16_LE && fmt->dsd_dop) { in data_ep_set_params()
822 ep->datainterval = fmt->datainterval; in data_ep_set_params()
823 ep->stride = frame_bits >> 3; in data_ep_set_params()
827 ep->silence_value = 0x80; in data_ep_set_params()
834 ep->silence_value = 0x69; in data_ep_set_params()
837 ep->silence_value = 0; in data_ep_set_params()
841 ep->freqmax = ep->freqn + (ep->freqn >> 1); in data_ep_set_params()
847 * the data interval is more than 1 (i.e. ep->datainterval > 0), in data_ep_set_params()
852 * (ep->freqmax << ep->datainterval overflows at 8.192 MHz for the in data_ep_set_params()
854 * USB high speed, noting that ep->freqmax is in units of in data_ep_set_params()
857 maxsize = (((ep->freqmax << ep->datainterval) + 0xffff) >> 16) * in data_ep_set_params()
862 if (ep->maxpacksize && ep->maxpacksize < maxsize) { in data_ep_set_params()
864 unsigned int data_maxsize = maxsize = ep->maxpacksize; in data_ep_set_params()
868 data_maxsize -= sizeof(__le32); in data_ep_set_params()
869 ep->freqmax = (data_maxsize / (frame_bits >> 3)) in data_ep_set_params()
870 << (16 - ep->datainterval); in data_ep_set_params()
873 if (ep->fill_max) in data_ep_set_params()
874 ep->curpacksize = ep->maxpacksize; in data_ep_set_params()
876 ep->curpacksize = maxsize; in data_ep_set_params()
878 if (snd_usb_get_speed(ep->chip->dev) != USB_SPEED_FULL) { in data_ep_set_params()
879 packs_per_ms = 8 >> ep->datainterval; in data_ep_set_params()
887 1U << sync_ep->syncinterval); in data_ep_set_params()
888 max_packs_per_urb = max(1u, max_packs_per_urb >> ep->datainterval); in data_ep_set_params()
895 * Playback endpoints with implicit sync much use the same parameters in data_ep_set_params()
898 if (usb_pipein(ep->pipe) || in data_ep_set_params()
908 if (snd_usb_get_speed(ep->chip->dev) == USB_SPEED_WIRELESS) { in data_ep_set_params()
909 int interval = ep->datainterval; in data_ep_set_params()
919 ep->nurbs = MAX_URBS; in data_ep_set_params()
922 * Playback endpoints without implicit sync are adjusted so that in data_ep_set_params()
929 minsize = (ep->freqn >> (16 - ep->datainterval)) * in data_ep_set_params()
931 /* with sync from device, assume it can be 12% lower */ in data_ep_set_params()
933 minsize -= minsize >> 3; in data_ep_set_params()
946 ep->max_urb_frames = DIV_ROUND_UP(frames_per_period, in data_ep_set_params()
952 ep->nurbs = min(max_urbs, urbs_per_period * periods_per_buffer); in data_ep_set_params()
956 for (i = 0; i < ep->nurbs; i++) { in data_ep_set_params()
957 struct snd_urb_ctx *u = &ep->urb[i]; in data_ep_set_params()
958 u->index = i; in data_ep_set_params()
959 u->ep = ep; in data_ep_set_params()
960 u->packets = urb_packs; in data_ep_set_params()
961 u->buffer_size = maxsize * u->packets; in data_ep_set_params()
963 if (fmt->fmt_type == UAC_FORMAT_TYPE_II) in data_ep_set_params()
964 u->packets++; /* for transfer delimiter */ in data_ep_set_params()
965 u->urb = usb_alloc_urb(u->packets, GFP_KERNEL); in data_ep_set_params()
966 if (!u->urb) in data_ep_set_params()
969 u->urb->transfer_buffer = in data_ep_set_params()
970 usb_alloc_coherent(ep->chip->dev, u->buffer_size, in data_ep_set_params()
971 GFP_KERNEL, &u->urb->transfer_dma); in data_ep_set_params()
972 if (!u->urb->transfer_buffer) in data_ep_set_params()
974 u->urb->pipe = ep->pipe; in data_ep_set_params()
975 u->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; in data_ep_set_params()
976 u->urb->interval = 1 << ep->datainterval; in data_ep_set_params()
977 u->urb->context = u; in data_ep_set_params()
978 u->urb->complete = snd_complete_urb; in data_ep_set_params()
979 INIT_LIST_HEAD(&u->ready_list); in data_ep_set_params()
986 return -ENOMEM; in data_ep_set_params()
990 * configure a sync endpoint
996 ep->syncbuf = usb_alloc_coherent(ep->chip->dev, SYNC_URBS * 4, in sync_ep_set_params()
997 GFP_KERNEL, &ep->sync_dma); in sync_ep_set_params()
998 if (!ep->syncbuf) in sync_ep_set_params()
999 return -ENOMEM; in sync_ep_set_params()
1002 struct snd_urb_ctx *u = &ep->urb[i]; in sync_ep_set_params()
1003 u->index = i; in sync_ep_set_params()
1004 u->ep = ep; in sync_ep_set_params()
1005 u->packets = 1; in sync_ep_set_params()
1006 u->urb = usb_alloc_urb(1, GFP_KERNEL); in sync_ep_set_params()
1007 if (!u->urb) in sync_ep_set_params()
1009 u->urb->transfer_buffer = ep->syncbuf + i * 4; in sync_ep_set_params()
1010 u->urb->transfer_dma = ep->sync_dma + i * 4; in sync_ep_set_params()
1011 u->urb->transfer_buffer_length = 4; in sync_ep_set_params()
1012 u->urb->pipe = ep->pipe; in sync_ep_set_params()
1013 u->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; in sync_ep_set_params()
1014 u->urb->number_of_packets = 1; in sync_ep_set_params()
1015 u->urb->interval = 1 << ep->syncinterval; in sync_ep_set_params()
1016 u->urb->context = u; in sync_ep_set_params()
1017 u->urb->complete = snd_complete_urb; in sync_ep_set_params()
1020 ep->nurbs = SYNC_URBS; in sync_ep_set_params()
1026 return -ENOMEM; in sync_ep_set_params()
1040 * @sync_ep: the sync endpoint to use, if any
1058 if (ep->use_count != 0) { in snd_usb_endpoint_set_params()
1059 bool check = ep->is_implicit_feedback && in snd_usb_endpoint_set_params()
1066 usb_audio_warn(ep->chip, in snd_usb_endpoint_set_params()
1068 ep->ep_num); in snd_usb_endpoint_set_params()
1069 return -EBUSY; in snd_usb_endpoint_set_params()
1072 usb_audio_dbg(ep->chip, in snd_usb_endpoint_set_params()
1074 ep->ep_num); in snd_usb_endpoint_set_params()
1081 ep->datainterval = fmt->datainterval; in snd_usb_endpoint_set_params()
1082 ep->maxpacksize = fmt->maxpacksize; in snd_usb_endpoint_set_params()
1083 ep->fill_max = !!(fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX); in snd_usb_endpoint_set_params()
1085 if (snd_usb_get_speed(ep->chip->dev) == USB_SPEED_FULL) { in snd_usb_endpoint_set_params()
1086 ep->freqn = get_usb_full_speed_rate(rate); in snd_usb_endpoint_set_params()
1087 ep->pps = 1000 >> ep->datainterval; in snd_usb_endpoint_set_params()
1089 ep->freqn = get_usb_high_speed_rate(rate); in snd_usb_endpoint_set_params()
1090 ep->pps = 8000 >> ep->datainterval; in snd_usb_endpoint_set_params()
1093 ep->sample_rem = rate % ep->pps; in snd_usb_endpoint_set_params()
1094 ep->packsize[0] = rate / ep->pps; in snd_usb_endpoint_set_params()
1095 ep->packsize[1] = (rate + (ep->pps - 1)) / ep->pps; in snd_usb_endpoint_set_params()
1098 ep->freqm = ep->freqn; in snd_usb_endpoint_set_params()
1099 ep->freqshift = INT_MIN; in snd_usb_endpoint_set_params()
1101 ep->phase = 0; in snd_usb_endpoint_set_params()
1103 switch (ep->type) { in snd_usb_endpoint_set_params()
1113 err = -EINVAL; in snd_usb_endpoint_set_params()
1116 usb_audio_dbg(ep->chip, in snd_usb_endpoint_set_params()
1118 ep->ep_num, ep->type, ep->nurbs, err); in snd_usb_endpoint_set_params()
1141 if (atomic_read(&ep->chip->shutdown)) in snd_usb_endpoint_start()
1142 return -EBADFD; in snd_usb_endpoint_start()
1145 if (++ep->use_count != 1) in snd_usb_endpoint_start()
1151 ep->active_mask = 0; in snd_usb_endpoint_start()
1152 ep->unlink_mask = 0; in snd_usb_endpoint_start()
1153 ep->phase = 0; in snd_usb_endpoint_start()
1154 ep->sample_accum = 0; in snd_usb_endpoint_start()
1165 set_bit(EP_FLAG_RUNNING, &ep->flags); in snd_usb_endpoint_start()
1168 for (i = 0; i < ep->nurbs; i++) { in snd_usb_endpoint_start()
1169 struct snd_urb_ctx *ctx = ep->urb + i; in snd_usb_endpoint_start()
1170 list_add_tail(&ctx->ready_list, &ep->ready_playback_urbs); in snd_usb_endpoint_start()
1176 for (i = 0; i < ep->nurbs; i++) { in snd_usb_endpoint_start()
1177 struct urb *urb = ep->urb[i].urb; in snd_usb_endpoint_start()
1182 if (usb_pipeout(ep->pipe)) { in snd_usb_endpoint_start()
1183 prepare_outbound_urb(ep, urb->context); in snd_usb_endpoint_start()
1185 prepare_inbound_urb(ep, urb->context); in snd_usb_endpoint_start()
1190 usb_audio_err(ep->chip, in snd_usb_endpoint_start()
1195 set_bit(i, &ep->active_mask); in snd_usb_endpoint_start()
1201 clear_bit(EP_FLAG_RUNNING, &ep->flags); in snd_usb_endpoint_start()
1202 ep->use_count--; in snd_usb_endpoint_start()
1204 return -EPIPE; in snd_usb_endpoint_start()
1226 if (snd_BUG_ON(ep->use_count == 0)) in snd_usb_endpoint_stop()
1229 if (--ep->use_count == 0) { in snd_usb_endpoint_stop()
1231 set_bit(EP_FLAG_STOPPING, &ep->flags); in snd_usb_endpoint_stop()
1250 if (ep->use_count != 0) in snd_usb_endpoint_deactivate()
1283 * snd_usb_handle_sync_urb: parse an USB sync packet
1309 ep->use_count != 0) { in snd_usb_handle_sync_urb()
1316 in_ctx = urb->context; in snd_usb_handle_sync_urb()
1319 for (i = 0; i < in_ctx->packets; i++) in snd_usb_handle_sync_urb()
1320 if (urb->iso_frame_desc[i].status == 0) in snd_usb_handle_sync_urb()
1321 bytes += urb->iso_frame_desc[i].actual_length; in snd_usb_handle_sync_urb()
1324 * skip empty packets. At least M-Audio's Fast Track Ultra stops in snd_usb_handle_sync_urb()
1325 * streaming once it received a 0-byte OUT URB in snd_usb_handle_sync_urb()
1330 spin_lock_irqsave(&ep->lock, flags); in snd_usb_handle_sync_urb()
1331 out_packet = ep->next_packet + ep->next_packet_write_pos; in snd_usb_handle_sync_urb()
1337 * IN packet we just received. Since the actual size is scaled in snd_usb_handle_sync_urb()
1340 * fed-back endpoint and the synchronizing endpoint. in snd_usb_handle_sync_urb()
1343 out_packet->packets = in_ctx->packets; in snd_usb_handle_sync_urb()
1344 for (i = 0; i < in_ctx->packets; i++) { in snd_usb_handle_sync_urb()
1345 if (urb->iso_frame_desc[i].status == 0) in snd_usb_handle_sync_urb()
1346 out_packet->packet_size[i] = in snd_usb_handle_sync_urb()
1347 urb->iso_frame_desc[i].actual_length / sender->stride; in snd_usb_handle_sync_urb()
1349 out_packet->packet_size[i] = 0; in snd_usb_handle_sync_urb()
1352 ep->next_packet_write_pos++; in snd_usb_handle_sync_urb()
1353 ep->next_packet_write_pos %= MAX_URBS; in snd_usb_handle_sync_urb()
1354 spin_unlock_irqrestore(&ep->lock, flags); in snd_usb_handle_sync_urb()
1361 * process after playback sync complete in snd_usb_handle_sync_urb()
1375 if (urb->iso_frame_desc[0].status != 0 || in snd_usb_handle_sync_urb()
1376 urb->iso_frame_desc[0].actual_length < 3) in snd_usb_handle_sync_urb()
1379 f = le32_to_cpup(urb->transfer_buffer); in snd_usb_handle_sync_urb()
1380 if (urb->iso_frame_desc[0].actual_length == 3) in snd_usb_handle_sync_urb()
1388 if (unlikely(sender->tenor_fb_quirk)) { in snd_usb_handle_sync_urb()
1390 * Devices based on Tenor 8802 chipsets (TEAC UD-H01 in snd_usb_handle_sync_urb()
1392 * by +/- 0x1.0000. in snd_usb_handle_sync_urb()
1394 if (f < ep->freqn - 0x8000) in snd_usb_handle_sync_urb()
1396 else if (f > ep->freqn + 0x8000) in snd_usb_handle_sync_urb()
1397 f -= 0xf000; in snd_usb_handle_sync_urb()
1398 } else if (unlikely(ep->freqshift == INT_MIN)) { in snd_usb_handle_sync_urb()
1403 * differ from the nominal value more than +50% or -25%. in snd_usb_handle_sync_urb()
1406 while (f < ep->freqn - ep->freqn / 4) { in snd_usb_handle_sync_urb()
1410 while (f > ep->freqn + ep->freqn / 2) { in snd_usb_handle_sync_urb()
1412 shift--; in snd_usb_handle_sync_urb()
1414 ep->freqshift = shift; in snd_usb_handle_sync_urb()
1415 } else if (ep->freqshift >= 0) in snd_usb_handle_sync_urb()
1416 f <<= ep->freqshift; in snd_usb_handle_sync_urb()
1418 f >>= -ep->freqshift; in snd_usb_handle_sync_urb()
1420 if (likely(f >= ep->freqn - ep->freqn / 8 && f <= ep->freqmax)) { in snd_usb_handle_sync_urb()
1425 spin_lock_irqsave(&ep->lock, flags); in snd_usb_handle_sync_urb()
1426 ep->freqm = f; in snd_usb_handle_sync_urb()
1427 spin_unlock_irqrestore(&ep->lock, flags); in snd_usb_handle_sync_urb()
1433 ep->freqshift = INT_MIN; in snd_usb_handle_sync_urb()