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| author | Eldad Zack <eldad@fogrefinery.com> | 2012-11-28 23:55:41 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-11-29 08:45:18 +0100 |
| commit | ca10a7ebdff1c862ca1ef1d7bd2c6810e3c87e17 (patch) | |
| tree | d06e8e7b7d93e0af9253b23c0bc450acce146552 /sound | |
| parent | 09d8e3a71d2bdde11b258a62043cb784891e6ad3 (diff) | |
| download | kernel_goldelico_gta04-ca10a7ebdff1c862ca1ef1d7bd2c6810e3c87e17.zip kernel_goldelico_gta04-ca10a7ebdff1c862ca1ef1d7bd2c6810e3c87e17.tar.gz kernel_goldelico_gta04-ca10a7ebdff1c862ca1ef1d7bd2c6810e3c87e17.tar.bz2 | |
ALSA: usb-audio: FT C400 sync playback EP to capture EP
The playback endpoint uses implicit feedback mode, similar
to the M-Audio FTU. Like with the FTU, we need to associate
the sync pipe ourselves.
Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/pcm.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index f488a49..769821c 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -362,6 +362,19 @@ static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt) attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; switch (subs->stream->chip->usb_id) { + case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */ + if (is_playback) { + implicit_fb = 1; + ep = 0x81; + iface = usb_ifnum_to_if(dev, 3); + + if (!iface || iface->num_altsetting == 0) + return -EINVAL; + + alts = &iface->altsetting[1]; + goto add_sync_ep; + } + break; case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */ case USB_ID(0x0763, 0x2081): if (is_playback) { |