Lines Matching refs:ep
90 usb_free_coherent(u->ep->chip->dev, u->buffer_size, in release_urb_ctx()
130 int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep) in snd_usb_endpoint_implicit_feedback_sink() argument
132 return ep->sync_master && in snd_usb_endpoint_implicit_feedback_sink()
133 ep->sync_master->type == SND_USB_ENDPOINT_TYPE_DATA && in snd_usb_endpoint_implicit_feedback_sink()
134 ep->type == SND_USB_ENDPOINT_TYPE_DATA && in snd_usb_endpoint_implicit_feedback_sink()
135 usb_pipeout(ep->pipe); in snd_usb_endpoint_implicit_feedback_sink()
145 int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep) in snd_usb_endpoint_next_packet_size() argument
150 if (ep->fill_max) in snd_usb_endpoint_next_packet_size()
151 return ep->maxframesize; in snd_usb_endpoint_next_packet_size()
153 spin_lock_irqsave(&ep->lock, flags); in snd_usb_endpoint_next_packet_size()
154 ep->phase = (ep->phase & 0xffff) in snd_usb_endpoint_next_packet_size()
155 + (ep->freqm << ep->datainterval); in snd_usb_endpoint_next_packet_size()
156 ret = min(ep->phase >> 16, ep->maxframesize); in snd_usb_endpoint_next_packet_size()
157 spin_unlock_irqrestore(&ep->lock, flags); in snd_usb_endpoint_next_packet_size()
162 static void retire_outbound_urb(struct snd_usb_endpoint *ep, in retire_outbound_urb() argument
165 if (ep->retire_data_urb) in retire_outbound_urb()
166 ep->retire_data_urb(ep->data_subs, urb_ctx->urb); in retire_outbound_urb()
169 static void retire_inbound_urb(struct snd_usb_endpoint *ep, in retire_inbound_urb() argument
174 if (unlikely(ep->skip_packets > 0)) { in retire_inbound_urb()
175 ep->skip_packets--; in retire_inbound_urb()
179 if (ep->sync_slave) in retire_inbound_urb()
180 snd_usb_handle_sync_urb(ep->sync_slave, ep, urb); in retire_inbound_urb()
182 if (ep->retire_data_urb) in retire_inbound_urb()
183 ep->retire_data_urb(ep->data_subs, urb); in retire_inbound_urb()
186 static void prepare_silent_urb(struct snd_usb_endpoint *ep, in prepare_silent_urb() argument
196 if (ep->chip->tx_length_quirk) in prepare_silent_urb()
207 counts = snd_usb_endpoint_next_packet_size(ep); in prepare_silent_urb()
209 length = counts * ep->stride; /* number of silent bytes */ in prepare_silent_urb()
210 offset = offs * ep->stride + extra * i; in prepare_silent_urb()
219 ep->silence_value, length); in prepare_silent_urb()
224 urb->transfer_buffer_length = offs * ep->stride + ctx->packets * extra; in prepare_silent_urb()
230 static void prepare_outbound_urb(struct snd_usb_endpoint *ep, in prepare_outbound_urb() argument
236 urb->dev = ep->chip->dev; /* we need to set this at each time */ in prepare_outbound_urb()
238 switch (ep->type) { in prepare_outbound_urb()
240 if (ep->prepare_data_urb) { in prepare_outbound_urb()
241 ep->prepare_data_urb(ep->data_subs, urb); in prepare_outbound_urb()
244 prepare_silent_urb(ep, ctx); in prepare_outbound_urb()
249 if (snd_usb_get_speed(ep->chip->dev) >= USB_SPEED_HIGH) { in prepare_outbound_urb()
256 cp[0] = ep->freqn; in prepare_outbound_urb()
257 cp[1] = ep->freqn >> 8; in prepare_outbound_urb()
258 cp[2] = ep->freqn >> 16; in prepare_outbound_urb()
259 cp[3] = ep->freqn >> 24; in prepare_outbound_urb()
267 cp[0] = ep->freqn >> 2; in prepare_outbound_urb()
268 cp[1] = ep->freqn >> 10; in prepare_outbound_urb()
269 cp[2] = ep->freqn >> 18; in prepare_outbound_urb()
279 static inline void prepare_inbound_urb(struct snd_usb_endpoint *ep, in prepare_inbound_urb() argument
285 urb->dev = ep->chip->dev; /* we need to set this at each time */ in prepare_inbound_urb()
287 switch (ep->type) { in prepare_inbound_urb()
292 urb->iso_frame_desc[i].length = ep->curpacksize; in prepare_inbound_urb()
293 offs += ep->curpacksize; in prepare_inbound_urb()
301 urb->iso_frame_desc[0].length = min(4u, ep->syncmaxsize); in prepare_inbound_urb()
321 static void queue_pending_output_urbs(struct snd_usb_endpoint *ep) in queue_pending_output_urbs() argument
323 while (test_bit(EP_FLAG_RUNNING, &ep->flags)) { in queue_pending_output_urbs()
330 spin_lock_irqsave(&ep->lock, flags); in queue_pending_output_urbs()
331 if (ep->next_packet_read_pos != ep->next_packet_write_pos) { in queue_pending_output_urbs()
332 packet = ep->next_packet + ep->next_packet_read_pos; in queue_pending_output_urbs()
333 ep->next_packet_read_pos++; in queue_pending_output_urbs()
334 ep->next_packet_read_pos %= MAX_URBS; in queue_pending_output_urbs()
337 if (!list_empty(&ep->ready_playback_urbs)) in queue_pending_output_urbs()
338 ctx = list_first_entry(&ep->ready_playback_urbs, in queue_pending_output_urbs()
341 spin_unlock_irqrestore(&ep->lock, flags); in queue_pending_output_urbs()
353 prepare_outbound_urb(ep, ctx); in queue_pending_output_urbs()
357 usb_audio_err(ep->chip, in queue_pending_output_urbs()
361 set_bit(ctx->index, &ep->active_mask); in queue_pending_output_urbs()
371 struct snd_usb_endpoint *ep = ctx->ep; in snd_complete_urb() local
382 if (unlikely(atomic_read(&ep->chip->shutdown))) in snd_complete_urb()
385 if (unlikely(!test_bit(EP_FLAG_RUNNING, &ep->flags))) in snd_complete_urb()
388 if (usb_pipeout(ep->pipe)) { in snd_complete_urb()
389 retire_outbound_urb(ep, ctx); in snd_complete_urb()
391 if (unlikely(!test_bit(EP_FLAG_RUNNING, &ep->flags))) in snd_complete_urb()
394 if (snd_usb_endpoint_implicit_feedback_sink(ep)) { in snd_complete_urb()
395 spin_lock_irqsave(&ep->lock, flags); in snd_complete_urb()
396 list_add_tail(&ctx->ready_list, &ep->ready_playback_urbs); in snd_complete_urb()
397 spin_unlock_irqrestore(&ep->lock, flags); in snd_complete_urb()
398 queue_pending_output_urbs(ep); in snd_complete_urb()
403 prepare_outbound_urb(ep, ctx); in snd_complete_urb()
405 retire_inbound_urb(ep, ctx); in snd_complete_urb()
407 if (unlikely(!test_bit(EP_FLAG_RUNNING, &ep->flags))) in snd_complete_urb()
410 prepare_inbound_urb(ep, ctx); in snd_complete_urb()
417 usb_audio_err(ep->chip, "cannot submit urb (err = %d)\n", err); in snd_complete_urb()
418 if (ep->data_subs && ep->data_subs->pcm_substream) { in snd_complete_urb()
419 substream = ep->data_subs->pcm_substream; in snd_complete_urb()
424 clear_bit(ctx->index, &ep->active_mask); in snd_complete_urb()
450 struct snd_usb_endpoint *ep; in snd_usb_add_endpoint() local
458 list_for_each_entry(ep, &chip->ep_list, list) { in snd_usb_add_endpoint()
459 if (ep->ep_num == ep_num && in snd_usb_add_endpoint()
460 ep->iface == alts->desc.bInterfaceNumber && in snd_usb_add_endpoint()
461 ep->altsetting == alts->desc.bAlternateSetting) { in snd_usb_add_endpoint()
462 usb_audio_dbg(ep->chip, in snd_usb_add_endpoint()
464 ep_num, ep->iface, ep->altsetting, ep); in snd_usb_add_endpoint()
474 ep = kzalloc(sizeof(*ep), GFP_KERNEL); in snd_usb_add_endpoint()
475 if (!ep) in snd_usb_add_endpoint()
478 ep->chip = chip; in snd_usb_add_endpoint()
479 spin_lock_init(&ep->lock); in snd_usb_add_endpoint()
480 ep->type = type; in snd_usb_add_endpoint()
481 ep->ep_num = ep_num; in snd_usb_add_endpoint()
482 ep->iface = alts->desc.bInterfaceNumber; in snd_usb_add_endpoint()
483 ep->altsetting = alts->desc.bAlternateSetting; in snd_usb_add_endpoint()
484 INIT_LIST_HEAD(&ep->ready_playback_urbs); in snd_usb_add_endpoint()
488 ep->pipe = usb_sndisocpipe(chip->dev, ep_num); in snd_usb_add_endpoint()
490 ep->pipe = usb_rcvisocpipe(chip->dev, ep_num); in snd_usb_add_endpoint()
496 ep->syncinterval = get_endpoint(alts, 1)->bRefresh; in snd_usb_add_endpoint()
498 ep->syncinterval = 1; in snd_usb_add_endpoint()
501 ep->syncinterval = get_endpoint(alts, 1)->bInterval - 1; in snd_usb_add_endpoint()
503 ep->syncinterval = 3; in snd_usb_add_endpoint()
505 ep->syncmaxsize = le16_to_cpu(get_endpoint(alts, 1)->wMaxPacketSize); in snd_usb_add_endpoint()
508 list_add_tail(&ep->list, &chip->ep_list); in snd_usb_add_endpoint()
513 return ep; in snd_usb_add_endpoint()
519 static int wait_clear_urbs(struct snd_usb_endpoint *ep) in wait_clear_urbs() argument
525 alive = bitmap_weight(&ep->active_mask, ep->nurbs); in wait_clear_urbs()
533 usb_audio_err(ep->chip, in wait_clear_urbs()
535 alive, ep->ep_num); in wait_clear_urbs()
536 clear_bit(EP_FLAG_STOPPING, &ep->flags); in wait_clear_urbs()
538 ep->data_subs = NULL; in wait_clear_urbs()
539 ep->sync_slave = NULL; in wait_clear_urbs()
540 ep->retire_data_urb = NULL; in wait_clear_urbs()
541 ep->prepare_data_urb = NULL; in wait_clear_urbs()
549 void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep) in snd_usb_endpoint_sync_pending_stop() argument
551 if (ep && test_bit(EP_FLAG_STOPPING, &ep->flags)) in snd_usb_endpoint_sync_pending_stop()
552 wait_clear_urbs(ep); in snd_usb_endpoint_sync_pending_stop()
558 static int deactivate_urbs(struct snd_usb_endpoint *ep, bool force) in deactivate_urbs() argument
562 if (!force && atomic_read(&ep->chip->shutdown)) /* to be sure... */ in deactivate_urbs()
565 clear_bit(EP_FLAG_RUNNING, &ep->flags); in deactivate_urbs()
567 INIT_LIST_HEAD(&ep->ready_playback_urbs); in deactivate_urbs()
568 ep->next_packet_read_pos = 0; in deactivate_urbs()
569 ep->next_packet_write_pos = 0; in deactivate_urbs()
571 for (i = 0; i < ep->nurbs; i++) { in deactivate_urbs()
572 if (test_bit(i, &ep->active_mask)) { in deactivate_urbs()
573 if (!test_and_set_bit(i, &ep->unlink_mask)) { in deactivate_urbs()
574 struct urb *u = ep->urb[i].urb; in deactivate_urbs()
586 static void release_urbs(struct snd_usb_endpoint *ep, int force) in release_urbs() argument
591 ep->retire_data_urb = NULL; in release_urbs()
592 ep->prepare_data_urb = NULL; in release_urbs()
595 deactivate_urbs(ep, force); in release_urbs()
596 wait_clear_urbs(ep); in release_urbs()
598 for (i = 0; i < ep->nurbs; i++) in release_urbs()
599 release_urb_ctx(&ep->urb[i]); in release_urbs()
601 if (ep->syncbuf) in release_urbs()
602 usb_free_coherent(ep->chip->dev, SYNC_URBS * 4, in release_urbs()
603 ep->syncbuf, ep->sync_dma); in release_urbs()
605 ep->syncbuf = NULL; in release_urbs()
606 ep->nurbs = 0; in release_urbs()
612 static int data_ep_set_params(struct snd_usb_endpoint *ep, in data_ep_set_params() argument
625 int tx_length_quirk = (ep->chip->tx_length_quirk && in data_ep_set_params()
626 usb_pipeout(ep->pipe)); in data_ep_set_params()
637 ep->datainterval = fmt->datainterval; in data_ep_set_params()
638 ep->stride = frame_bits >> 3; in data_ep_set_params()
642 ep->silence_value = 0x80; in data_ep_set_params()
649 ep->silence_value = 0x69; in data_ep_set_params()
652 ep->silence_value = 0; in data_ep_set_params()
656 ep->freqmax = ep->freqn + (ep->freqn >> 1); in data_ep_set_params()
672 maxsize = (((ep->freqmax << ep->datainterval) + 0xffff) >> 16) * in data_ep_set_params()
677 if (ep->maxpacksize && ep->maxpacksize < maxsize) { in data_ep_set_params()
679 unsigned int data_maxsize = maxsize = ep->maxpacksize; in data_ep_set_params()
684 ep->freqmax = (data_maxsize / (frame_bits >> 3)) in data_ep_set_params()
685 << (16 - ep->datainterval); in data_ep_set_params()
688 if (ep->fill_max) in data_ep_set_params()
689 ep->curpacksize = ep->maxpacksize; in data_ep_set_params()
691 ep->curpacksize = maxsize; in data_ep_set_params()
693 if (snd_usb_get_speed(ep->chip->dev) != USB_SPEED_FULL) { in data_ep_set_params()
694 packs_per_ms = 8 >> ep->datainterval; in data_ep_set_params()
700 if (sync_ep && !snd_usb_endpoint_implicit_feedback_sink(ep)) in data_ep_set_params()
703 max_packs_per_urb = max(1u, max_packs_per_urb >> ep->datainterval); in data_ep_set_params()
713 if (usb_pipein(ep->pipe) || in data_ep_set_params()
714 snd_usb_endpoint_implicit_feedback_sink(ep)) { in data_ep_set_params()
723 if (snd_usb_get_speed(ep->chip->dev) == USB_SPEED_WIRELESS) { in data_ep_set_params()
724 int interval = ep->datainterval; in data_ep_set_params()
734 ep->nurbs = MAX_URBS; in data_ep_set_params()
744 minsize = (ep->freqn >> (16 - ep->datainterval)) * in data_ep_set_params()
761 ep->max_urb_frames = DIV_ROUND_UP(frames_per_period, in data_ep_set_params()
767 ep->nurbs = min(max_urbs, urbs_per_period * periods_per_buffer); in data_ep_set_params()
771 for (i = 0; i < ep->nurbs; i++) { in data_ep_set_params()
772 struct snd_urb_ctx *u = &ep->urb[i]; in data_ep_set_params()
774 u->ep = ep; in data_ep_set_params()
785 usb_alloc_coherent(ep->chip->dev, u->buffer_size, in data_ep_set_params()
789 u->urb->pipe = ep->pipe; in data_ep_set_params()
791 u->urb->interval = 1 << ep->datainterval; in data_ep_set_params()
800 release_urbs(ep, 0); in data_ep_set_params()
807 static int sync_ep_set_params(struct snd_usb_endpoint *ep) in sync_ep_set_params() argument
811 ep->syncbuf = usb_alloc_coherent(ep->chip->dev, SYNC_URBS * 4, in sync_ep_set_params()
812 GFP_KERNEL, &ep->sync_dma); in sync_ep_set_params()
813 if (!ep->syncbuf) in sync_ep_set_params()
817 struct snd_urb_ctx *u = &ep->urb[i]; in sync_ep_set_params()
819 u->ep = ep; in sync_ep_set_params()
824 u->urb->transfer_buffer = ep->syncbuf + i * 4; in sync_ep_set_params()
825 u->urb->transfer_dma = ep->sync_dma + i * 4; in sync_ep_set_params()
827 u->urb->pipe = ep->pipe; in sync_ep_set_params()
830 u->urb->interval = 1 << ep->syncinterval; in sync_ep_set_params()
835 ep->nurbs = SYNC_URBS; in sync_ep_set_params()
840 release_urbs(ep, 0); in sync_ep_set_params()
861 int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, in snd_usb_endpoint_set_params() argument
873 if (ep->use_count != 0) { in snd_usb_endpoint_set_params()
874 usb_audio_warn(ep->chip, in snd_usb_endpoint_set_params()
876 ep->ep_num); in snd_usb_endpoint_set_params()
881 release_urbs(ep, 0); in snd_usb_endpoint_set_params()
883 ep->datainterval = fmt->datainterval; in snd_usb_endpoint_set_params()
884 ep->maxpacksize = fmt->maxpacksize; in snd_usb_endpoint_set_params()
885 ep->fill_max = !!(fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX); in snd_usb_endpoint_set_params()
887 if (snd_usb_get_speed(ep->chip->dev) == USB_SPEED_FULL) in snd_usb_endpoint_set_params()
888 ep->freqn = get_usb_full_speed_rate(rate); in snd_usb_endpoint_set_params()
890 ep->freqn = get_usb_high_speed_rate(rate); in snd_usb_endpoint_set_params()
893 ep->freqm = ep->freqn; in snd_usb_endpoint_set_params()
894 ep->freqshift = INT_MIN; in snd_usb_endpoint_set_params()
896 ep->phase = 0; in snd_usb_endpoint_set_params()
898 switch (ep->type) { in snd_usb_endpoint_set_params()
900 err = data_ep_set_params(ep, pcm_format, channels, in snd_usb_endpoint_set_params()
905 err = sync_ep_set_params(ep); in snd_usb_endpoint_set_params()
911 usb_audio_dbg(ep->chip, in snd_usb_endpoint_set_params()
913 ep->ep_num, ep->type, ep->nurbs, err); in snd_usb_endpoint_set_params()
931 int snd_usb_endpoint_start(struct snd_usb_endpoint *ep) in snd_usb_endpoint_start() argument
936 if (atomic_read(&ep->chip->shutdown)) in snd_usb_endpoint_start()
940 if (++ep->use_count != 1) in snd_usb_endpoint_start()
944 deactivate_urbs(ep, false); in snd_usb_endpoint_start()
946 ep->active_mask = 0; in snd_usb_endpoint_start()
947 ep->unlink_mask = 0; in snd_usb_endpoint_start()
948 ep->phase = 0; in snd_usb_endpoint_start()
950 snd_usb_endpoint_start_quirk(ep); in snd_usb_endpoint_start()
959 set_bit(EP_FLAG_RUNNING, &ep->flags); in snd_usb_endpoint_start()
961 if (snd_usb_endpoint_implicit_feedback_sink(ep)) { in snd_usb_endpoint_start()
962 for (i = 0; i < ep->nurbs; i++) { in snd_usb_endpoint_start()
963 struct snd_urb_ctx *ctx = ep->urb + i; in snd_usb_endpoint_start()
964 list_add_tail(&ctx->ready_list, &ep->ready_playback_urbs); in snd_usb_endpoint_start()
970 for (i = 0; i < ep->nurbs; i++) { in snd_usb_endpoint_start()
971 struct urb *urb = ep->urb[i].urb; in snd_usb_endpoint_start()
976 if (usb_pipeout(ep->pipe)) { in snd_usb_endpoint_start()
977 prepare_outbound_urb(ep, urb->context); in snd_usb_endpoint_start()
979 prepare_inbound_urb(ep, urb->context); in snd_usb_endpoint_start()
984 usb_audio_err(ep->chip, in snd_usb_endpoint_start()
989 set_bit(i, &ep->active_mask); in snd_usb_endpoint_start()
995 clear_bit(EP_FLAG_RUNNING, &ep->flags); in snd_usb_endpoint_start()
996 ep->use_count--; in snd_usb_endpoint_start()
997 deactivate_urbs(ep, false); in snd_usb_endpoint_start()
1015 void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep) in snd_usb_endpoint_stop() argument
1017 if (!ep) in snd_usb_endpoint_stop()
1020 if (snd_BUG_ON(ep->use_count == 0)) in snd_usb_endpoint_stop()
1023 if (--ep->use_count == 0) { in snd_usb_endpoint_stop()
1024 deactivate_urbs(ep, false); in snd_usb_endpoint_stop()
1025 set_bit(EP_FLAG_STOPPING, &ep->flags); in snd_usb_endpoint_stop()
1039 void snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep) in snd_usb_endpoint_deactivate() argument
1041 if (!ep) in snd_usb_endpoint_deactivate()
1044 if (ep->use_count != 0) in snd_usb_endpoint_deactivate()
1047 deactivate_urbs(ep, true); in snd_usb_endpoint_deactivate()
1048 wait_clear_urbs(ep); in snd_usb_endpoint_deactivate()
1059 void snd_usb_endpoint_release(struct snd_usb_endpoint *ep) in snd_usb_endpoint_release() argument
1061 release_urbs(ep, 1); in snd_usb_endpoint_release()
1071 void snd_usb_endpoint_free(struct snd_usb_endpoint *ep) in snd_usb_endpoint_free() argument
1073 kfree(ep); in snd_usb_endpoint_free()
1086 void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep, in snd_usb_handle_sync_urb() argument
1094 snd_BUG_ON(ep == sender); in snd_usb_handle_sync_urb()
1102 if (snd_usb_endpoint_implicit_feedback_sink(ep) && in snd_usb_handle_sync_urb()
1103 ep->use_count != 0) { in snd_usb_handle_sync_urb()
1124 spin_lock_irqsave(&ep->lock, flags); in snd_usb_handle_sync_urb()
1125 out_packet = ep->next_packet + ep->next_packet_write_pos; in snd_usb_handle_sync_urb()
1146 ep->next_packet_write_pos++; in snd_usb_handle_sync_urb()
1147 ep->next_packet_write_pos %= MAX_URBS; in snd_usb_handle_sync_urb()
1148 spin_unlock_irqrestore(&ep->lock, flags); in snd_usb_handle_sync_urb()
1149 queue_pending_output_urbs(ep); in snd_usb_handle_sync_urb()
1188 if (f < ep->freqn - 0x8000) in snd_usb_handle_sync_urb()
1190 else if (f > ep->freqn + 0x8000) in snd_usb_handle_sync_urb()
1192 } else if (unlikely(ep->freqshift == INT_MIN)) { in snd_usb_handle_sync_urb()
1200 while (f < ep->freqn - ep->freqn / 4) { in snd_usb_handle_sync_urb()
1204 while (f > ep->freqn + ep->freqn / 2) { in snd_usb_handle_sync_urb()
1208 ep->freqshift = shift; in snd_usb_handle_sync_urb()
1209 } else if (ep->freqshift >= 0) in snd_usb_handle_sync_urb()
1210 f <<= ep->freqshift; in snd_usb_handle_sync_urb()
1212 f >>= -ep->freqshift; in snd_usb_handle_sync_urb()
1214 if (likely(f >= ep->freqn - ep->freqn / 8 && f <= ep->freqmax)) { in snd_usb_handle_sync_urb()
1219 spin_lock_irqsave(&ep->lock, flags); in snd_usb_handle_sync_urb()
1220 ep->freqm = f; in snd_usb_handle_sync_urb()
1221 spin_unlock_irqrestore(&ep->lock, flags); in snd_usb_handle_sync_urb()
1227 ep->freqshift = INT_MIN; in snd_usb_handle_sync_urb()