Lines Matching refs:ep
89 usb_free_coherent(u->ep->chip->dev, u->buffer_size, in release_urb_ctx()
121 static inline bool ep_state_running(struct snd_usb_endpoint *ep) in ep_state_running() argument
123 return atomic_read(&ep->state) == EP_STATE_RUNNING; in ep_state_running()
126 static inline bool ep_state_update(struct snd_usb_endpoint *ep, int old, int new) in ep_state_update() argument
128 return atomic_cmpxchg(&ep->state, old, new) == old; in ep_state_update()
139 int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep) in snd_usb_endpoint_implicit_feedback_sink() argument
141 return ep->implicit_fb_sync && usb_pipeout(ep->pipe); in snd_usb_endpoint_implicit_feedback_sink()
151 static int slave_next_packet_size(struct snd_usb_endpoint *ep, in slave_next_packet_size() argument
158 if (ep->fill_max) in slave_next_packet_size()
159 return ep->maxframesize; in slave_next_packet_size()
161 spin_lock_irqsave(&ep->lock, flags); in slave_next_packet_size()
162 phase = (ep->phase & 0xffff) + (ep->freqm << ep->datainterval); in slave_next_packet_size()
163 ret = min(phase >> 16, ep->maxframesize); in slave_next_packet_size()
167 ep->phase = phase; in slave_next_packet_size()
168 spin_unlock_irqrestore(&ep->lock, flags); in slave_next_packet_size()
177 static int next_packet_size(struct snd_usb_endpoint *ep, unsigned int avail) in next_packet_size() argument
182 if (ep->fill_max) in next_packet_size()
183 return ep->maxframesize; in next_packet_size()
185 sample_accum = ep->sample_accum + ep->sample_rem; in next_packet_size()
186 if (sample_accum >= ep->pps) { in next_packet_size()
187 sample_accum -= ep->pps; in next_packet_size()
188 ret = ep->packsize[1]; in next_packet_size()
190 ret = ep->packsize[0]; in next_packet_size()
195 ep->sample_accum = sample_accum; in next_packet_size()
207 int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep, in snd_usb_endpoint_next_packet_size() argument
220 if (ep->sync_source) in snd_usb_endpoint_next_packet_size()
221 return slave_next_packet_size(ep, avail); in snd_usb_endpoint_next_packet_size()
223 return next_packet_size(ep, avail); in snd_usb_endpoint_next_packet_size()
226 static void call_retire_callback(struct snd_usb_endpoint *ep, in call_retire_callback() argument
231 data_subs = READ_ONCE(ep->data_subs); in call_retire_callback()
232 if (data_subs && ep->retire_data_urb) in call_retire_callback()
233 ep->retire_data_urb(data_subs, urb); in call_retire_callback()
236 static void retire_outbound_urb(struct snd_usb_endpoint *ep, in retire_outbound_urb() argument
239 call_retire_callback(ep, urb_ctx->urb); in retire_outbound_urb()
242 static void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep,
246 static void retire_inbound_urb(struct snd_usb_endpoint *ep, in retire_inbound_urb() argument
252 if (unlikely(ep->skip_packets > 0)) { in retire_inbound_urb()
253 ep->skip_packets--; in retire_inbound_urb()
257 sync_sink = READ_ONCE(ep->sync_sink); in retire_inbound_urb()
259 snd_usb_handle_sync_urb(sync_sink, ep, urb); in retire_inbound_urb()
261 call_retire_callback(ep, urb); in retire_inbound_urb()
269 static void prepare_silent_urb(struct snd_usb_endpoint *ep, in prepare_silent_urb() argument
279 if (has_tx_length_quirk(ep->chip)) in prepare_silent_urb()
287 counts = snd_usb_endpoint_next_packet_size(ep, ctx, i, 0); in prepare_silent_urb()
288 length = counts * ep->stride; /* number of silent bytes */ in prepare_silent_urb()
289 offset = offs * ep->stride + extra * i; in prepare_silent_urb()
298 ep->silence_value, length); in prepare_silent_urb()
303 urb->transfer_buffer_length = offs * ep->stride + ctx->packets * extra; in prepare_silent_urb()
310 static int prepare_outbound_urb(struct snd_usb_endpoint *ep, in prepare_outbound_urb() argument
318 urb->dev = ep->chip->dev; /* we need to set this at each time */ in prepare_outbound_urb()
320 switch (ep->type) { in prepare_outbound_urb()
322 data_subs = READ_ONCE(ep->data_subs); in prepare_outbound_urb()
323 if (data_subs && ep->prepare_data_urb) in prepare_outbound_urb()
324 return ep->prepare_data_urb(data_subs, urb, in_stream_lock); in prepare_outbound_urb()
326 prepare_silent_urb(ep, ctx); in prepare_outbound_urb()
330 if (snd_usb_get_speed(ep->chip->dev) >= USB_SPEED_HIGH) { in prepare_outbound_urb()
337 cp[0] = ep->freqn; in prepare_outbound_urb()
338 cp[1] = ep->freqn >> 8; in prepare_outbound_urb()
339 cp[2] = ep->freqn >> 16; in prepare_outbound_urb()
340 cp[3] = ep->freqn >> 24; in prepare_outbound_urb()
348 cp[0] = ep->freqn >> 2; in prepare_outbound_urb()
349 cp[1] = ep->freqn >> 10; in prepare_outbound_urb()
350 cp[2] = ep->freqn >> 18; in prepare_outbound_urb()
361 static int prepare_inbound_urb(struct snd_usb_endpoint *ep, in prepare_inbound_urb() argument
367 urb->dev = ep->chip->dev; /* we need to set this at each time */ in prepare_inbound_urb()
369 switch (ep->type) { in prepare_inbound_urb()
374 urb->iso_frame_desc[i].length = ep->curpacksize; in prepare_inbound_urb()
375 offs += ep->curpacksize; in prepare_inbound_urb()
383 urb->iso_frame_desc[0].length = min(4u, ep->syncmaxsize); in prepare_inbound_urb()
391 static void notify_xrun(struct snd_usb_endpoint *ep) in notify_xrun() argument
395 data_subs = READ_ONCE(ep->data_subs); in notify_xrun()
401 next_packet_fifo_enqueue(struct snd_usb_endpoint *ep) in next_packet_fifo_enqueue() argument
405 p = ep->next_packet + (ep->next_packet_head + ep->next_packet_queued) % in next_packet_fifo_enqueue()
406 ARRAY_SIZE(ep->next_packet); in next_packet_fifo_enqueue()
407 ep->next_packet_queued++; in next_packet_fifo_enqueue()
412 next_packet_fifo_dequeue(struct snd_usb_endpoint *ep) in next_packet_fifo_dequeue() argument
416 p = ep->next_packet + ep->next_packet_head; in next_packet_fifo_dequeue()
417 ep->next_packet_head++; in next_packet_fifo_dequeue()
418 ep->next_packet_head %= ARRAY_SIZE(ep->next_packet); in next_packet_fifo_dequeue()
419 ep->next_packet_queued--; in next_packet_fifo_dequeue()
423 static void push_back_to_ready_list(struct snd_usb_endpoint *ep, in push_back_to_ready_list() argument
428 spin_lock_irqsave(&ep->lock, flags); in push_back_to_ready_list()
429 list_add_tail(&ctx->ready_list, &ep->ready_playback_urbs); in push_back_to_ready_list()
430 spin_unlock_irqrestore(&ep->lock, flags); in push_back_to_ready_list()
446 void snd_usb_queue_pending_output_urbs(struct snd_usb_endpoint *ep, in snd_usb_queue_pending_output_urbs() argument
449 bool implicit_fb = snd_usb_endpoint_implicit_feedback_sink(ep); in snd_usb_queue_pending_output_urbs()
451 while (ep_state_running(ep)) { in snd_usb_queue_pending_output_urbs()
458 spin_lock_irqsave(&ep->lock, flags); in snd_usb_queue_pending_output_urbs()
459 if ((!implicit_fb || ep->next_packet_queued > 0) && in snd_usb_queue_pending_output_urbs()
460 !list_empty(&ep->ready_playback_urbs)) { in snd_usb_queue_pending_output_urbs()
462 ctx = list_first_entry(&ep->ready_playback_urbs, in snd_usb_queue_pending_output_urbs()
466 packet = next_packet_fifo_dequeue(ep); in snd_usb_queue_pending_output_urbs()
468 spin_unlock_irqrestore(&ep->lock, flags); in snd_usb_queue_pending_output_urbs()
480 err = prepare_outbound_urb(ep, ctx, in_stream_lock); in snd_usb_queue_pending_output_urbs()
482 if (unlikely(!ep_state_running(ep))) in snd_usb_queue_pending_output_urbs()
487 push_back_to_ready_list(ep, ctx); in snd_usb_queue_pending_output_urbs()
489 notify_xrun(ep); in snd_usb_queue_pending_output_urbs()
495 usb_audio_err(ep->chip, in snd_usb_queue_pending_output_urbs()
498 notify_xrun(ep); in snd_usb_queue_pending_output_urbs()
502 set_bit(ctx->index, &ep->active_mask); in snd_usb_queue_pending_output_urbs()
503 atomic_inc(&ep->submitted_urbs); in snd_usb_queue_pending_output_urbs()
513 struct snd_usb_endpoint *ep = ctx->ep; in snd_complete_urb() local
522 if (unlikely(atomic_read(&ep->chip->shutdown))) in snd_complete_urb()
525 if (unlikely(!ep_state_running(ep))) in snd_complete_urb()
528 if (usb_pipeout(ep->pipe)) { in snd_complete_urb()
529 retire_outbound_urb(ep, ctx); in snd_complete_urb()
531 if (unlikely(!ep_state_running(ep))) in snd_complete_urb()
537 if (ep->lowlatency_playback || in snd_complete_urb()
538 snd_usb_endpoint_implicit_feedback_sink(ep)) { in snd_complete_urb()
539 push_back_to_ready_list(ep, ctx); in snd_complete_urb()
540 clear_bit(ctx->index, &ep->active_mask); in snd_complete_urb()
541 snd_usb_queue_pending_output_urbs(ep, false); in snd_complete_urb()
542 atomic_dec(&ep->submitted_urbs); /* decrement at last */ in snd_complete_urb()
547 prepare_outbound_urb(ep, ctx, false); in snd_complete_urb()
549 if (unlikely(!ep_state_running(ep))) in snd_complete_urb()
552 retire_inbound_urb(ep, ctx); in snd_complete_urb()
554 if (unlikely(!ep_state_running(ep))) in snd_complete_urb()
557 prepare_inbound_urb(ep, ctx); in snd_complete_urb()
564 usb_audio_err(ep->chip, "cannot submit urb (err = %d)\n", err); in snd_complete_urb()
565 notify_xrun(ep); in snd_complete_urb()
568 clear_bit(ctx->index, &ep->active_mask); in snd_complete_urb()
569 atomic_dec(&ep->submitted_urbs); in snd_complete_urb()
601 struct snd_usb_endpoint *ep; in snd_usb_get_endpoint() local
603 list_for_each_entry(ep, &chip->ep_list, list) { in snd_usb_get_endpoint()
604 if (ep->ep_num == ep_num) in snd_usb_get_endpoint()
605 return ep; in snd_usb_get_endpoint()
634 struct snd_usb_endpoint *ep; in snd_usb_add_endpoint() local
637 ep = snd_usb_get_endpoint(chip, ep_num); in snd_usb_add_endpoint()
638 if (ep) in snd_usb_add_endpoint()
644 ep = kzalloc(sizeof(*ep), GFP_KERNEL); in snd_usb_add_endpoint()
645 if (!ep) in snd_usb_add_endpoint()
648 ep->chip = chip; in snd_usb_add_endpoint()
649 spin_lock_init(&ep->lock); in snd_usb_add_endpoint()
650 ep->type = type; in snd_usb_add_endpoint()
651 ep->ep_num = ep_num; in snd_usb_add_endpoint()
652 INIT_LIST_HEAD(&ep->ready_playback_urbs); in snd_usb_add_endpoint()
653 atomic_set(&ep->submitted_urbs, 0); in snd_usb_add_endpoint()
658 ep->pipe = usb_sndisocpipe(chip->dev, ep_num); in snd_usb_add_endpoint()
660 ep->pipe = usb_rcvisocpipe(chip->dev, ep_num); in snd_usb_add_endpoint()
662 list_add_tail(&ep->list, &chip->ep_list); in snd_usb_add_endpoint()
668 struct snd_usb_endpoint *ep) in endpoint_set_syncinterval() argument
673 alts = snd_usb_get_host_interface(chip, ep->iface, ep->altsetting); in endpoint_set_syncinterval()
677 desc = get_endpoint(alts, ep->ep_idx); in endpoint_set_syncinterval()
680 ep->syncinterval = desc->bRefresh; in endpoint_set_syncinterval()
682 ep->syncinterval = 1; in endpoint_set_syncinterval()
684 ep->syncinterval = desc->bInterval - 1; in endpoint_set_syncinterval()
686 ep->syncinterval = 3; in endpoint_set_syncinterval()
688 ep->syncmaxsize = le16_to_cpu(desc->wMaxPacketSize); in endpoint_set_syncinterval()
691 static bool endpoint_compatible(struct snd_usb_endpoint *ep, in endpoint_compatible() argument
695 if (!ep->opened) in endpoint_compatible()
697 if (ep->cur_audiofmt != fp) in endpoint_compatible()
699 if (ep->cur_rate != params_rate(params) || in endpoint_compatible()
700 ep->cur_format != params_format(params) || in endpoint_compatible()
701 ep->cur_period_frames != params_period_size(params) || in endpoint_compatible()
702 ep->cur_buffer_periods != params_periods(params)) in endpoint_compatible()
712 struct snd_usb_endpoint *ep, in snd_usb_endpoint_compatible() argument
719 ret = endpoint_compatible(ep, fp, params); in snd_usb_endpoint_compatible()
742 struct snd_usb_endpoint *ep; in snd_usb_endpoint_open() local
746 ep = snd_usb_get_endpoint(chip, ep_num); in snd_usb_endpoint_open()
747 if (!ep) { in snd_usb_endpoint_open()
752 if (!ep->opened) { in snd_usb_endpoint_open()
754 ep->iface = fp->sync_iface; in snd_usb_endpoint_open()
755 ep->altsetting = fp->sync_altsetting; in snd_usb_endpoint_open()
756 ep->ep_idx = fp->sync_ep_idx; in snd_usb_endpoint_open()
758 ep->iface = fp->iface; in snd_usb_endpoint_open()
759 ep->altsetting = fp->altsetting; in snd_usb_endpoint_open()
760 ep->ep_idx = fp->ep_idx; in snd_usb_endpoint_open()
763 ep_num, ep->iface, ep->altsetting, ep->ep_idx); in snd_usb_endpoint_open()
765 ep->iface_ref = iface_ref_find(chip, ep->iface); in snd_usb_endpoint_open()
766 if (!ep->iface_ref) { in snd_usb_endpoint_open()
767 ep = NULL; in snd_usb_endpoint_open()
771 ep->cur_audiofmt = fp; in snd_usb_endpoint_open()
772 ep->cur_channels = fp->channels; in snd_usb_endpoint_open()
773 ep->cur_rate = params_rate(params); in snd_usb_endpoint_open()
774 ep->cur_format = params_format(params); in snd_usb_endpoint_open()
775 ep->cur_frame_bytes = snd_pcm_format_physical_width(ep->cur_format) * in snd_usb_endpoint_open()
776 ep->cur_channels / 8; in snd_usb_endpoint_open()
777 ep->cur_period_frames = params_period_size(params); in snd_usb_endpoint_open()
778 ep->cur_period_bytes = ep->cur_period_frames * ep->cur_frame_bytes; in snd_usb_endpoint_open()
779 ep->cur_buffer_periods = params_periods(params); in snd_usb_endpoint_open()
780 ep->cur_clock = fp->clock; in snd_usb_endpoint_open()
782 if (ep->type == SND_USB_ENDPOINT_TYPE_SYNC) in snd_usb_endpoint_open()
783 endpoint_set_syncinterval(chip, ep); in snd_usb_endpoint_open()
785 ep->implicit_fb_sync = fp->implicit_fb; in snd_usb_endpoint_open()
786 ep->need_setup = true; in snd_usb_endpoint_open()
789 ep->cur_channels, ep->cur_rate, in snd_usb_endpoint_open()
790 snd_pcm_format_name(ep->cur_format), in snd_usb_endpoint_open()
791 ep->cur_period_bytes, ep->cur_buffer_periods, in snd_usb_endpoint_open()
792 ep->implicit_fb_sync); in snd_usb_endpoint_open()
795 if (WARN_ON(!ep->iface_ref)) { in snd_usb_endpoint_open()
796 ep = NULL; in snd_usb_endpoint_open()
800 if (!endpoint_compatible(ep, fp, params)) { in snd_usb_endpoint_open()
803 ep = NULL; in snd_usb_endpoint_open()
808 ep_num, ep->opened); in snd_usb_endpoint_open()
811 if (!ep->iface_ref->opened++) in snd_usb_endpoint_open()
812 ep->iface_ref->need_setup = true; in snd_usb_endpoint_open()
814 ep->opened++; in snd_usb_endpoint_open()
818 return ep; in snd_usb_endpoint_open()
839 void snd_usb_endpoint_set_callback(struct snd_usb_endpoint *ep, in snd_usb_endpoint_set_callback() argument
847 ep->prepare_data_urb = prepare; in snd_usb_endpoint_set_callback()
848 ep->retire_data_urb = retire; in snd_usb_endpoint_set_callback()
850 ep->lowlatency_playback = data_subs->lowlatency_playback; in snd_usb_endpoint_set_callback()
852 ep->lowlatency_playback = false; in snd_usb_endpoint_set_callback()
853 WRITE_ONCE(ep->data_subs, data_subs); in snd_usb_endpoint_set_callback()
857 struct snd_usb_endpoint *ep, in endpoint_set_interface() argument
860 int altset = set ? ep->altsetting : 0; in endpoint_set_interface()
864 ep->iface, altset, ep->ep_num); in endpoint_set_interface()
865 err = usb_set_interface(chip->dev, ep->iface, altset); in endpoint_set_interface()
868 ep->iface, altset, err); in endpoint_set_interface()
883 struct snd_usb_endpoint *ep) in snd_usb_endpoint_close() argument
887 ep->ep_num, ep->opened); in snd_usb_endpoint_close()
889 if (!--ep->iface_ref->opened) in snd_usb_endpoint_close()
890 endpoint_set_interface(chip, ep, false); in snd_usb_endpoint_close()
892 if (!--ep->opened) { in snd_usb_endpoint_close()
893 ep->iface = 0; in snd_usb_endpoint_close()
894 ep->altsetting = 0; in snd_usb_endpoint_close()
895 ep->cur_audiofmt = NULL; in snd_usb_endpoint_close()
896 ep->cur_rate = 0; in snd_usb_endpoint_close()
897 ep->cur_clock = 0; in snd_usb_endpoint_close()
898 ep->iface_ref = NULL; in snd_usb_endpoint_close()
899 usb_audio_dbg(chip, "EP 0x%x closed\n", ep->ep_num); in snd_usb_endpoint_close()
905 void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep) in snd_usb_endpoint_suspend() argument
907 ep->need_setup = true; in snd_usb_endpoint_suspend()
908 if (ep->iface_ref) in snd_usb_endpoint_suspend()
909 ep->iface_ref->need_setup = true; in snd_usb_endpoint_suspend()
915 static int wait_clear_urbs(struct snd_usb_endpoint *ep) in wait_clear_urbs() argument
920 if (atomic_read(&ep->state) != EP_STATE_STOPPING) in wait_clear_urbs()
924 alive = atomic_read(&ep->submitted_urbs); in wait_clear_urbs()
932 usb_audio_err(ep->chip, in wait_clear_urbs()
934 alive, ep->ep_num); in wait_clear_urbs()
936 if (ep_state_update(ep, EP_STATE_STOPPING, EP_STATE_STOPPED)) { in wait_clear_urbs()
937 ep->sync_sink = NULL; in wait_clear_urbs()
938 snd_usb_endpoint_set_callback(ep, NULL, NULL, NULL); in wait_clear_urbs()
947 void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep) in snd_usb_endpoint_sync_pending_stop() argument
949 if (ep) in snd_usb_endpoint_sync_pending_stop()
950 wait_clear_urbs(ep); in snd_usb_endpoint_sync_pending_stop()
958 static int stop_urbs(struct snd_usb_endpoint *ep, bool force, bool keep_pending) in stop_urbs() argument
963 if (!force && atomic_read(&ep->running)) in stop_urbs()
966 if (!ep_state_update(ep, EP_STATE_RUNNING, EP_STATE_STOPPING)) in stop_urbs()
969 spin_lock_irqsave(&ep->lock, flags); in stop_urbs()
970 INIT_LIST_HEAD(&ep->ready_playback_urbs); in stop_urbs()
971 ep->next_packet_head = 0; in stop_urbs()
972 ep->next_packet_queued = 0; in stop_urbs()
973 spin_unlock_irqrestore(&ep->lock, flags); in stop_urbs()
978 for (i = 0; i < ep->nurbs; i++) { in stop_urbs()
979 if (test_bit(i, &ep->active_mask)) { in stop_urbs()
980 if (!test_and_set_bit(i, &ep->unlink_mask)) { in stop_urbs()
981 struct urb *u = ep->urb[i].urb; in stop_urbs()
993 static int release_urbs(struct snd_usb_endpoint *ep, bool force) in release_urbs() argument
998 snd_usb_endpoint_set_callback(ep, NULL, NULL, NULL); in release_urbs()
1001 err = stop_urbs(ep, force, false); in release_urbs()
1005 wait_clear_urbs(ep); in release_urbs()
1007 for (i = 0; i < ep->nurbs; i++) in release_urbs()
1008 release_urb_ctx(&ep->urb[i]); in release_urbs()
1010 usb_free_coherent(ep->chip->dev, SYNC_URBS * 4, in release_urbs()
1011 ep->syncbuf, ep->sync_dma); in release_urbs()
1013 ep->syncbuf = NULL; in release_urbs()
1014 ep->nurbs = 0; in release_urbs()
1021 static int data_ep_set_params(struct snd_usb_endpoint *ep) in data_ep_set_params() argument
1023 struct snd_usb_audio *chip = ep->chip; in data_ep_set_params()
1027 const struct audioformat *fmt = ep->cur_audiofmt; in data_ep_set_params()
1028 int frame_bits = ep->cur_frame_bytes * 8; in data_ep_set_params()
1030 usb_pipeout(ep->pipe)); in data_ep_set_params()
1033 ep->ep_num, ep->pipe); in data_ep_set_params()
1035 if (ep->cur_format == SNDRV_PCM_FORMAT_DSD_U16_LE && fmt->dsd_dop) { in data_ep_set_params()
1041 frame_bits += ep->cur_channels << 3; in data_ep_set_params()
1044 ep->datainterval = fmt->datainterval; in data_ep_set_params()
1045 ep->stride = frame_bits >> 3; in data_ep_set_params()
1047 switch (ep->cur_format) { in data_ep_set_params()
1049 ep->silence_value = 0x80; in data_ep_set_params()
1056 ep->silence_value = 0x69; in data_ep_set_params()
1059 ep->silence_value = 0; in data_ep_set_params()
1063 ep->freqmax = ep->freqn + (ep->freqn >> 1); in data_ep_set_params()
1079 maxsize = (((ep->freqmax << ep->datainterval) + 0xffff) >> 16) * in data_ep_set_params()
1084 if (ep->maxpacksize && ep->maxpacksize < maxsize) { in data_ep_set_params()
1086 unsigned int data_maxsize = maxsize = ep->maxpacksize; in data_ep_set_params()
1091 ep->freqmax = (data_maxsize / (frame_bits >> 3)) in data_ep_set_params()
1092 << (16 - ep->datainterval); in data_ep_set_params()
1095 if (ep->fill_max) in data_ep_set_params()
1096 ep->curpacksize = ep->maxpacksize; in data_ep_set_params()
1098 ep->curpacksize = maxsize; in data_ep_set_params()
1101 packs_per_ms = 8 >> ep->datainterval; in data_ep_set_params()
1107 if (ep->sync_source && !ep->implicit_fb_sync) in data_ep_set_params()
1109 1U << ep->sync_source->syncinterval); in data_ep_set_params()
1110 max_packs_per_urb = max(1u, max_packs_per_urb >> ep->datainterval); in data_ep_set_params()
1120 if (usb_pipein(ep->pipe) || ep->implicit_fb_sync) { in data_ep_set_params()
1130 int interval = ep->datainterval; in data_ep_set_params()
1138 while (urb_packs > 1 && urb_packs * maxsize >= ep->cur_period_bytes) in data_ep_set_params()
1140 ep->nurbs = MAX_URBS; in data_ep_set_params()
1150 minsize = (ep->freqn >> (16 - ep->datainterval)) * in data_ep_set_params()
1153 if (ep->sync_source) in data_ep_set_params()
1158 max_packs_per_period = DIV_ROUND_UP(ep->cur_period_bytes, minsize); in data_ep_set_params()
1167 ep->max_urb_frames = DIV_ROUND_UP(ep->cur_period_frames, in data_ep_set_params()
1173 ep->nurbs = min(max_urbs, urbs_per_period * ep->cur_buffer_periods); in data_ep_set_params()
1177 for (i = 0; i < ep->nurbs; i++) { in data_ep_set_params()
1178 struct snd_urb_ctx *u = &ep->urb[i]; in data_ep_set_params()
1180 u->ep = ep; in data_ep_set_params()
1195 u->urb->pipe = ep->pipe; in data_ep_set_params()
1197 u->urb->interval = 1 << ep->datainterval; in data_ep_set_params()
1206 release_urbs(ep, false); in data_ep_set_params()
1213 static int sync_ep_set_params(struct snd_usb_endpoint *ep) in sync_ep_set_params() argument
1215 struct snd_usb_audio *chip = ep->chip; in sync_ep_set_params()
1219 ep->ep_num, ep->pipe); in sync_ep_set_params()
1221 ep->syncbuf = usb_alloc_coherent(chip->dev, SYNC_URBS * 4, in sync_ep_set_params()
1222 GFP_KERNEL, &ep->sync_dma); in sync_ep_set_params()
1223 if (!ep->syncbuf) in sync_ep_set_params()
1227 struct snd_urb_ctx *u = &ep->urb[i]; in sync_ep_set_params()
1229 u->ep = ep; in sync_ep_set_params()
1234 u->urb->transfer_buffer = ep->syncbuf + i * 4; in sync_ep_set_params()
1235 u->urb->transfer_dma = ep->sync_dma + i * 4; in sync_ep_set_params()
1237 u->urb->pipe = ep->pipe; in sync_ep_set_params()
1240 u->urb->interval = 1 << ep->syncinterval; in sync_ep_set_params()
1245 ep->nurbs = SYNC_URBS; in sync_ep_set_params()
1250 release_urbs(ep, false); in sync_ep_set_params()
1262 struct snd_usb_endpoint *ep) in snd_usb_endpoint_set_params() argument
1264 const struct audioformat *fmt = ep->cur_audiofmt; in snd_usb_endpoint_set_params()
1268 err = release_urbs(ep, false); in snd_usb_endpoint_set_params()
1272 ep->datainterval = fmt->datainterval; in snd_usb_endpoint_set_params()
1273 ep->maxpacksize = fmt->maxpacksize; in snd_usb_endpoint_set_params()
1274 ep->fill_max = !!(fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX); in snd_usb_endpoint_set_params()
1277 ep->freqn = get_usb_full_speed_rate(ep->cur_rate); in snd_usb_endpoint_set_params()
1278 ep->pps = 1000 >> ep->datainterval; in snd_usb_endpoint_set_params()
1280 ep->freqn = get_usb_high_speed_rate(ep->cur_rate); in snd_usb_endpoint_set_params()
1281 ep->pps = 8000 >> ep->datainterval; in snd_usb_endpoint_set_params()
1284 ep->sample_rem = ep->cur_rate % ep->pps; in snd_usb_endpoint_set_params()
1285 ep->packsize[0] = ep->cur_rate / ep->pps; in snd_usb_endpoint_set_params()
1286 ep->packsize[1] = (ep->cur_rate + (ep->pps - 1)) / ep->pps; in snd_usb_endpoint_set_params()
1289 ep->freqm = ep->freqn; in snd_usb_endpoint_set_params()
1290 ep->freqshift = INT_MIN; in snd_usb_endpoint_set_params()
1292 ep->phase = 0; in snd_usb_endpoint_set_params()
1294 switch (ep->type) { in snd_usb_endpoint_set_params()
1296 err = data_ep_set_params(ep); in snd_usb_endpoint_set_params()
1299 err = sync_ep_set_params(ep); in snd_usb_endpoint_set_params()
1305 usb_audio_dbg(chip, "Set up %d URBS, ret=%d\n", ep->nurbs, err); in snd_usb_endpoint_set_params()
1311 ep->maxframesize = ep->maxpacksize / ep->cur_frame_bytes; in snd_usb_endpoint_set_params()
1312 ep->curframesize = ep->curpacksize / ep->cur_frame_bytes; in snd_usb_endpoint_set_params()
1329 struct snd_usb_endpoint *ep) in snd_usb_endpoint_configure() argument
1335 if (WARN_ON(!ep->iface_ref)) in snd_usb_endpoint_configure()
1337 if (!ep->need_setup) in snd_usb_endpoint_configure()
1341 if (!ep->iface_ref->need_setup) { in snd_usb_endpoint_configure()
1345 if (ep->cur_audiofmt->protocol == UAC_VERSION_1) { in snd_usb_endpoint_configure()
1346 err = snd_usb_init_sample_rate(chip, ep->cur_audiofmt, in snd_usb_endpoint_configure()
1347 ep->cur_rate); in snd_usb_endpoint_configure()
1351 err = snd_usb_endpoint_set_params(chip, ep); in snd_usb_endpoint_configure()
1358 endpoint_set_interface(chip, ep, false); in snd_usb_endpoint_configure()
1363 iface_first = ep->cur_audiofmt->protocol == UAC_VERSION_1; in snd_usb_endpoint_configure()
1368 err = endpoint_set_interface(chip, ep, true); in snd_usb_endpoint_configure()
1373 err = snd_usb_init_pitch(chip, ep->cur_audiofmt); in snd_usb_endpoint_configure()
1377 err = snd_usb_init_sample_rate(chip, ep->cur_audiofmt, ep->cur_rate); in snd_usb_endpoint_configure()
1381 err = snd_usb_endpoint_set_params(chip, ep); in snd_usb_endpoint_configure()
1385 err = snd_usb_select_mode_quirk(chip, ep->cur_audiofmt); in snd_usb_endpoint_configure()
1391 err = endpoint_set_interface(chip, ep, true); in snd_usb_endpoint_configure()
1396 ep->iface_ref->need_setup = false; in snd_usb_endpoint_configure()
1399 ep->need_setup = false; in snd_usb_endpoint_configure()
1410 struct snd_usb_endpoint *ep; in snd_usb_endpoint_get_clock_rate() local
1416 list_for_each_entry(ep, &chip->ep_list, list) { in snd_usb_endpoint_get_clock_rate()
1417 if (ep->cur_clock == clock && ep->cur_rate) { in snd_usb_endpoint_get_clock_rate()
1418 rate = ep->cur_rate; in snd_usb_endpoint_get_clock_rate()
1439 int snd_usb_endpoint_start(struct snd_usb_endpoint *ep) in snd_usb_endpoint_start() argument
1441 bool is_playback = usb_pipeout(ep->pipe); in snd_usb_endpoint_start()
1445 if (atomic_read(&ep->chip->shutdown)) in snd_usb_endpoint_start()
1448 if (ep->sync_source) in snd_usb_endpoint_start()
1449 WRITE_ONCE(ep->sync_source->sync_sink, ep); in snd_usb_endpoint_start()
1451 usb_audio_dbg(ep->chip, "Starting %s EP 0x%x (running %d)\n", in snd_usb_endpoint_start()
1452 ep_type_name(ep->type), ep->ep_num, in snd_usb_endpoint_start()
1453 atomic_read(&ep->running)); in snd_usb_endpoint_start()
1456 if (atomic_inc_return(&ep->running) != 1) in snd_usb_endpoint_start()
1459 ep->active_mask = 0; in snd_usb_endpoint_start()
1460 ep->unlink_mask = 0; in snd_usb_endpoint_start()
1461 ep->phase = 0; in snd_usb_endpoint_start()
1462 ep->sample_accum = 0; in snd_usb_endpoint_start()
1464 snd_usb_endpoint_start_quirk(ep); in snd_usb_endpoint_start()
1473 if (!ep_state_update(ep, EP_STATE_STOPPED, EP_STATE_RUNNING)) in snd_usb_endpoint_start()
1476 if (snd_usb_endpoint_implicit_feedback_sink(ep) && in snd_usb_endpoint_start()
1477 !(ep->chip->quirk_flags & QUIRK_FLAG_PLAYBACK_FIRST)) { in snd_usb_endpoint_start()
1478 usb_audio_dbg(ep->chip, "No URB submission due to implicit fb sync\n"); in snd_usb_endpoint_start()
1483 for (i = 0; i < ep->nurbs; i++) { in snd_usb_endpoint_start()
1484 struct urb *urb = ep->urb[i].urb; in snd_usb_endpoint_start()
1490 err = prepare_outbound_urb(ep, urb->context, true); in snd_usb_endpoint_start()
1492 err = prepare_inbound_urb(ep, urb->context); in snd_usb_endpoint_start()
1497 usb_audio_dbg(ep->chip, in snd_usb_endpoint_start()
1499 ep->ep_num, err); in snd_usb_endpoint_start()
1505 usb_audio_err(ep->chip, in snd_usb_endpoint_start()
1510 set_bit(i, &ep->active_mask); in snd_usb_endpoint_start()
1511 atomic_inc(&ep->submitted_urbs); in snd_usb_endpoint_start()
1515 usb_audio_dbg(ep->chip, "XRUN at starting EP 0x%x\n", in snd_usb_endpoint_start()
1516 ep->ep_num); in snd_usb_endpoint_start()
1520 usb_audio_dbg(ep->chip, "%d URBs submitted for EP 0x%x\n", in snd_usb_endpoint_start()
1521 i, ep->ep_num); in snd_usb_endpoint_start()
1526 for (; i < ep->nurbs; i++) in snd_usb_endpoint_start()
1527 push_back_to_ready_list(ep, ep->urb + i); in snd_usb_endpoint_start()
1533 snd_usb_endpoint_stop(ep, false); in snd_usb_endpoint_start()
1552 void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep, bool keep_pending) in snd_usb_endpoint_stop() argument
1554 if (!ep) in snd_usb_endpoint_stop()
1557 usb_audio_dbg(ep->chip, "Stopping %s EP 0x%x (running %d)\n", in snd_usb_endpoint_stop()
1558 ep_type_name(ep->type), ep->ep_num, in snd_usb_endpoint_stop()
1559 atomic_read(&ep->running)); in snd_usb_endpoint_stop()
1561 if (snd_BUG_ON(!atomic_read(&ep->running))) in snd_usb_endpoint_stop()
1564 if (!atomic_dec_return(&ep->running)) { in snd_usb_endpoint_stop()
1565 if (ep->sync_source) in snd_usb_endpoint_stop()
1566 WRITE_ONCE(ep->sync_source->sync_sink, NULL); in snd_usb_endpoint_stop()
1567 stop_urbs(ep, false, keep_pending); in snd_usb_endpoint_stop()
1579 void snd_usb_endpoint_release(struct snd_usb_endpoint *ep) in snd_usb_endpoint_release() argument
1581 release_urbs(ep, true); in snd_usb_endpoint_release()
1592 struct snd_usb_endpoint *ep, *en; in snd_usb_endpoint_free_all() local
1595 list_for_each_entry_safe(ep, en, &chip->ep_list, list) in snd_usb_endpoint_free_all()
1596 kfree(ep); in snd_usb_endpoint_free_all()
1612 static void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep, in snd_usb_handle_sync_urb() argument
1620 snd_BUG_ON(ep == sender); in snd_usb_handle_sync_urb()
1628 if (snd_usb_endpoint_implicit_feedback_sink(ep) && in snd_usb_handle_sync_urb()
1629 atomic_read(&ep->running)) { in snd_usb_handle_sync_urb()
1650 spin_lock_irqsave(&ep->lock, flags); in snd_usb_handle_sync_urb()
1651 if (ep->next_packet_queued >= ARRAY_SIZE(ep->next_packet)) { in snd_usb_handle_sync_urb()
1652 spin_unlock_irqrestore(&ep->lock, flags); in snd_usb_handle_sync_urb()
1653 usb_audio_err(ep->chip, in snd_usb_handle_sync_urb()
1655 ep->ep_num); in snd_usb_handle_sync_urb()
1656 notify_xrun(ep); in snd_usb_handle_sync_urb()
1660 out_packet = next_packet_fifo_enqueue(ep); in snd_usb_handle_sync_urb()
1681 spin_unlock_irqrestore(&ep->lock, flags); in snd_usb_handle_sync_urb()
1682 snd_usb_queue_pending_output_urbs(ep, false); in snd_usb_handle_sync_urb()
1721 if (f < ep->freqn - 0x8000) in snd_usb_handle_sync_urb()
1723 else if (f > ep->freqn + 0x8000) in snd_usb_handle_sync_urb()
1725 } else if (unlikely(ep->freqshift == INT_MIN)) { in snd_usb_handle_sync_urb()
1733 while (f < ep->freqn - ep->freqn / 4) { in snd_usb_handle_sync_urb()
1737 while (f > ep->freqn + ep->freqn / 2) { in snd_usb_handle_sync_urb()
1741 ep->freqshift = shift; in snd_usb_handle_sync_urb()
1742 } else if (ep->freqshift >= 0) in snd_usb_handle_sync_urb()
1743 f <<= ep->freqshift; in snd_usb_handle_sync_urb()
1745 f >>= -ep->freqshift; in snd_usb_handle_sync_urb()
1747 if (likely(f >= ep->freqn - ep->freqn / 8 && f <= ep->freqmax)) { in snd_usb_handle_sync_urb()
1752 spin_lock_irqsave(&ep->lock, flags); in snd_usb_handle_sync_urb()
1753 ep->freqm = f; in snd_usb_handle_sync_urb()
1754 spin_unlock_irqrestore(&ep->lock, flags); in snd_usb_handle_sync_urb()
1760 ep->freqshift = INT_MIN; in snd_usb_handle_sync_urb()