ALSA: usb-audio: add support for M-Audio FT C600
Adds quirks and mixer support for the M-Audio Fast Track C600 USB
audio interface. This device is very similar to the C400 - the C600
simply has some more inputs and outputs, so the existing C400 support
is extended to support this device as well.
Signed-off-by: Matt Gruskin <matthew.gruskin@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 2c97185..7d7ad0b 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -863,13 +863,14 @@
ep->skip_packets = 4;
/*
- * M-Audio Fast Track C400 - when packets are not skipped, real world
- * latency varies by approx. +/- 50 frames (at 96KHz) each time the
- * stream is (re)started. When skipping packets 16 at endpoint start
- * up, the real world latency is stable within +/- 1 frame (also
+ * M-Audio Fast Track C400/C600 - when packets are not skipped, real
+ * world latency varies by approx. +/- 50 frames (at 96KHz) each time
+ * the stream is (re)started. When skipping packets 16 at endpoint
+ * start up, the real world latency is stable within +/- 1 frame (also
* across power cycles).
*/
- if (ep->chip->usb_id == USB_ID(0x0763, 0x2030) &&
+ if ((ep->chip->usb_id == USB_ID(0x0763, 0x2030) ||
+ ep->chip->usb_id == USB_ID(0x0763, 0x2031)) &&
ep->type == SND_USB_ENDPOINT_TYPE_DATA)
ep->skip_packets = 16;
}