diff options
| -rw-r--r-- | sound/usb/endpoint.c | 87 | ||||
| -rw-r--r-- | sound/usb/endpoint.h | 10 | ||||
| -rw-r--r-- | sound/usb/pcm.c | 27 | ||||
| -rw-r--r-- | sound/usb/stream.c | 16 |
4 files changed, 67 insertions, 73 deletions
diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c index 94490d706013..eb459db511f8 100644 --- a/sound/usb/endpoint.c +++ b/sound/usb/endpoint.c @@ -440,22 +440,19 @@ exit_clear: } /* - * Get the existing endpoint object corresponding EP, iface and alt numbers + * Get the existing endpoint object corresponding EP * Returns NULL if not present. - * Call inside chip->mutex locking for avoiding the race. */ struct snd_usb_endpoint * -snd_usb_get_endpoint(struct snd_usb_audio *chip, - int ep_num, int iface, int altsetting) +snd_usb_get_endpoint(struct snd_usb_audio *chip, int ep_num) { struct snd_usb_endpoint *ep; list_for_each_entry(ep, &chip->ep_list, list) { - if (ep->ep_num == ep_num && - ep->iface == iface && - ep->altsetting == altsetting) + if (ep->ep_num == ep_num) return ep; } + return NULL; } @@ -466,14 +463,13 @@ snd_usb_get_endpoint(struct snd_usb_audio *chip, * snd_usb_add_endpoint: Add an endpoint to an USB audio chip * * @chip: The chip - * @alts: The USB host interface * @ep_num: The number of the endpoint to use - * @direction: SNDRV_PCM_STREAM_PLAYBACK or SNDRV_PCM_STREAM_CAPTURE * @type: SND_USB_ENDPOINT_TYPE_DATA or SND_USB_ENDPOINT_TYPE_SYNC * * If the requested endpoint has not been added to the given chip before, - * a new instance is created. Otherwise, a pointer to the previoulsy - * created instance is returned. In case of any error, NULL is returned. + * a new instance is created. + * + * Returns zero on success or a negative error code. * * New endpoints will be added to chip->ep_list and must be freed by * calling snd_usb_endpoint_free(). @@ -481,74 +477,59 @@ snd_usb_get_endpoint(struct snd_usb_audio *chip, * For SND_USB_ENDPOINT_TYPE_SYNC, the caller needs to guarantee that * bNumEndpoints > 1 beforehand. */ -struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip, - struct usb_host_interface *alts, - int ep_num, int direction, int type) +int snd_usb_add_endpoint(struct snd_usb_audio *chip, int ep_num, int type) { struct snd_usb_endpoint *ep; - int is_playback = direction == SNDRV_PCM_STREAM_PLAYBACK; - - if (WARN_ON(!alts)) - return NULL; + bool is_playback; - mutex_lock(&chip->mutex); - - ep = snd_usb_get_endpoint(chip, ep_num, - alts->desc.bInterfaceNumber, - alts->desc.bAlternateSetting); - if (ep) { - usb_audio_dbg(ep->chip, "Re-using EP %x in iface %d,%d\n", - ep_num, ep->iface, ep->altsetting); - goto __exit_unlock; - } + ep = snd_usb_get_endpoint(chip, ep_num); + if (ep) + return 0; - usb_audio_dbg(chip, "Creating new %s %s endpoint #%x\n", - is_playback ? "playback" : "capture", + usb_audio_dbg(chip, "Creating new %s endpoint #%x\n", ep_type_name(type), ep_num); - ep = kzalloc(sizeof(*ep), GFP_KERNEL); if (!ep) - goto __exit_unlock; + return -ENOMEM; ep->chip = chip; spin_lock_init(&ep->lock); ep->type = type; ep->ep_num = ep_num; - ep->iface = alts->desc.bInterfaceNumber; - ep->altsetting = alts->desc.bAlternateSetting; INIT_LIST_HEAD(&ep->ready_playback_urbs); - ep_num &= USB_ENDPOINT_NUMBER_MASK; + is_playback = ((ep_num & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT); + ep_num &= USB_ENDPOINT_NUMBER_MASK; if (is_playback) ep->pipe = usb_sndisocpipe(chip->dev, ep_num); else ep->pipe = usb_rcvisocpipe(chip->dev, ep_num); - if (type == SND_USB_ENDPOINT_TYPE_SYNC) { - if (get_endpoint(alts, 1)->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && - get_endpoint(alts, 1)->bRefresh >= 1 && - get_endpoint(alts, 1)->bRefresh <= 9) - ep->syncinterval = get_endpoint(alts, 1)->bRefresh; + list_add_tail(&ep->list, &chip->ep_list); + return 0; +} + +/* Set up syncinterval and maxsyncsize for a sync EP */ +void snd_usb_endpoint_set_syncinterval(struct snd_usb_audio *chip, + struct snd_usb_endpoint *ep, + struct usb_host_interface *alts) +{ + struct usb_endpoint_descriptor *desc = get_endpoint(alts, 1); + + if (ep->type == SND_USB_ENDPOINT_TYPE_SYNC) { + if (desc->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE && + desc->bRefresh >= 1 && desc->bRefresh <= 9) + ep->syncinterval = desc->bRefresh; else if (snd_usb_get_speed(chip->dev) == USB_SPEED_FULL) ep->syncinterval = 1; - else if (get_endpoint(alts, 1)->bInterval >= 1 && - get_endpoint(alts, 1)->bInterval <= 16) - ep->syncinterval = get_endpoint(alts, 1)->bInterval - 1; + else if (desc->bInterval >= 1 && desc->bInterval <= 16) + ep->syncinterval = desc->bInterval - 1; else ep->syncinterval = 3; - ep->syncmaxsize = le16_to_cpu(get_endpoint(alts, 1)->wMaxPacketSize); + ep->syncmaxsize = le16_to_cpu(desc->wMaxPacketSize); } - - list_add_tail(&ep->list, &chip->ep_list); - - ep->is_implicit_feedback = 0; - -__exit_unlock: - mutex_unlock(&chip->mutex); - - return ep; } /* diff --git a/sound/usb/endpoint.h b/sound/usb/endpoint.h index 61487095a766..76b6de7de991 100644 --- a/sound/usb/endpoint.h +++ b/sound/usb/endpoint.h @@ -6,12 +6,9 @@ #define SND_USB_ENDPOINT_TYPE_SYNC 1 struct snd_usb_endpoint *snd_usb_get_endpoint(struct snd_usb_audio *chip, - int ep_num, int iface, - int altsetting); + int ep_num); -struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip, - struct usb_host_interface *alts, - int ep_num, int direction, int type); +int snd_usb_add_endpoint(struct snd_usb_audio *chip, int ep_num, int type); int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep, snd_pcm_format_t pcm_format, @@ -34,6 +31,9 @@ void snd_usb_endpoint_free(struct snd_usb_endpoint *ep); int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep); int snd_usb_endpoint_slave_next_packet_size(struct snd_usb_endpoint *ep); int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep); +void snd_usb_endpoint_set_syncinterval(struct snd_usb_audio *chip, + struct snd_usb_endpoint *ep, + struct usb_host_interface *alts); void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep, struct snd_usb_endpoint *sender, diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 8ae7d2fdba0d..03b1a02bcff4 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -585,11 +585,7 @@ static int set_sync_endpoint(struct snd_usb_substream *subs, if (!alts) return 0; - subs->sync_endpoint = snd_usb_add_endpoint(subs->stream->chip, - alts, ep, !subs->direction, - fmt->implicit_fb ? - SND_USB_ENDPOINT_TYPE_DATA : - SND_USB_ENDPOINT_TYPE_SYNC); + subs->sync_endpoint = snd_usb_get_endpoint(subs->stream->chip, ep); if (!subs->sync_endpoint) { if (is_playback && (fmt->ep_attr & USB_ENDPOINT_SYNCTYPE) == USB_ENDPOINT_SYNC_NONE) @@ -597,10 +593,14 @@ static int set_sync_endpoint(struct snd_usb_substream *subs, return -EINVAL; } + subs->sync_endpoint->iface = fmt->sync_iface; + subs->sync_endpoint->altsetting = fmt->sync_altsetting; subs->sync_endpoint->is_implicit_feedback = fmt->implicit_fb; subs->data_endpoint->sync_master = subs->sync_endpoint; + snd_usb_endpoint_set_syncinterval(subs->stream->chip, subs->sync_endpoint, alts); + if (!subs->sync_endpoint->use_count && (subs->data_endpoint->iface != subs->sync_endpoint->iface || subs->data_endpoint->altsetting != subs->sync_endpoint->altsetting)) { @@ -641,8 +641,7 @@ static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) /* shared EP with implicit fb */ if (fmt->implicit_fb && !subs->need_setup_fmt) { - ep = snd_usb_get_endpoint(subs->stream->chip, fmt->endpoint, - fmt->iface, fmt->altsetting); + ep = snd_usb_get_endpoint(subs->stream->chip, fmt->endpoint); if (ep && ep->use_count > 0) goto add_data_ep; } @@ -688,12 +687,12 @@ static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) add_data_ep: subs->interface = fmt->iface; subs->altset_idx = fmt->altset_idx; - subs->data_endpoint = snd_usb_add_endpoint(subs->stream->chip, - alts, fmt->endpoint, subs->direction, - SND_USB_ENDPOINT_TYPE_DATA); - + subs->data_endpoint = snd_usb_get_endpoint(subs->stream->chip, + fmt->endpoint); if (!subs->data_endpoint) return -EINVAL; + subs->data_endpoint->iface = fmt->iface; + subs->data_endpoint->altsetting = fmt->altsetting; err = set_sync_endpoint(subs, fmt); if (err < 0) @@ -1294,15 +1293,13 @@ static int apply_hw_constraint_from_sync(struct snd_pcm_runtime *runtime, subs->fixed_hw = 0; list_for_each_entry(fp, &subs->fmt_list, list) { - ep = snd_usb_get_endpoint(chip, fp->endpoint, fp->iface, - fp->altsetting); + ep = snd_usb_get_endpoint(chip, fp->endpoint); if (ep && ep->cur_rate) goto found; if (!fp->implicit_fb) continue; /* for the implicit fb, check the sync ep as well */ - ep = snd_usb_get_endpoint(chip, fp->sync_ep, fp->sync_iface, - fp->sync_altsetting); + ep = snd_usb_get_endpoint(chip, fp->sync_ep); if (ep && ep->cur_rate) goto found; } diff --git a/sound/usb/stream.c b/sound/usb/stream.c index 7087ee2c8174..816fd3e5aada 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -1206,6 +1206,22 @@ static int __snd_usb_parse_audio_interface(struct snd_usb_audio *chip, kfree(pd); return err; } + + /* add endpoints */ + err = snd_usb_add_endpoint(chip, fp->endpoint, + SND_USB_ENDPOINT_TYPE_DATA); + if (err < 0) + return err; + + if (fp->sync_ep) { + err = snd_usb_add_endpoint(chip, fp->sync_ep, + fp->implicit_fb ? + SND_USB_ENDPOINT_TYPE_DATA : + SND_USB_ENDPOINT_TYPE_SYNC); + if (err < 0) + return err; + } + /* try to set the interface... */ usb_set_interface(chip->dev, iface_no, altno); snd_usb_init_pitch(chip, iface_no, alts, fp); |