diff options
| author | Daniel Mack <zonque@gmail.com> | 2012-04-12 13:51:12 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-04-13 10:24:08 +0200 |
| commit | edcd3633e72a1590c4cf46befe5e6cd03b5aec3e (patch) | |
| tree | 57aab87190179ba8995d05a93c3ece3a91f870ae /sound/usb/stream.c | |
| parent | ALSA: snd-usb: implement new endpoint streaming model (diff) | |
| download | linux-edcd3633e72a1590c4cf46befe5e6cd03b5aec3e.tar.xz linux-edcd3633e72a1590c4cf46befe5e6cd03b5aec3e.zip | |
ALSA: snd-usb: switch over to new endpoint streaming logic
With the previous commit that added the new streaming model, all
endpoint and streaming related code is now in endpoint.c, and pcm.c
only acts as a wrapper for handling the packet's payload.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to '')
| -rw-r--r-- | sound/usb/stream.c | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/sound/usb/stream.c b/sound/usb/stream.c index 5ff8010b2d6f..6b7d7a2b7baa 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -73,6 +73,31 @@ static void snd_usb_audio_pcm_free(struct snd_pcm *pcm) } } +/* + * initialize the substream instance. + */ + +static void snd_usb_init_substream(struct snd_usb_stream *as, + int stream, + struct audioformat *fp) +{ + struct snd_usb_substream *subs = &as->substream[stream]; + + INIT_LIST_HEAD(&subs->fmt_list); + spin_lock_init(&subs->lock); + + subs->stream = as; + subs->direction = stream; + subs->dev = as->chip->dev; + subs->txfr_quirk = as->chip->txfr_quirk; + + snd_usb_set_pcm_ops(as->pcm, stream); + + list_add_tail(&fp->list, &subs->fmt_list); + subs->formats |= fp->formats; + subs->num_formats++; + subs->fmt_type = fp->fmt_type; +} /* * add this endpoint to the chip instance. @@ -94,9 +119,9 @@ int snd_usb_add_audio_stream(struct snd_usb_audio *chip, if (as->fmt_type != fp->fmt_type) continue; subs = &as->substream[stream]; - if (!subs->endpoint) + if (!subs->data_endpoint) continue; - if (subs->endpoint == fp->endpoint) { + if (subs->data_endpoint->ep_num == fp->endpoint) { list_add_tail(&fp->list, &subs->fmt_list); subs->num_formats++; subs->formats |= fp->formats; @@ -109,7 +134,7 @@ int snd_usb_add_audio_stream(struct snd_usb_audio *chip, if (as->fmt_type != fp->fmt_type) continue; subs = &as->substream[stream]; - if (subs->endpoint) + if (subs->data_endpoint) continue; err = snd_pcm_new_stream(as->pcm, stream, 1); if (err < 0) |