ALSA: ice1724 - Infrasonic Quartet support

* three external clock types
* all controls supported

Signed-off-by: Pavel Hofman <pavel.hofman@ivitera.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ice1712/quartet.h b/sound/pci/ice1712/quartet.h
new file mode 100644
index 0000000..80809b7
--- /dev/null
+++ b/sound/pci/ice1712/quartet.h
@@ -0,0 +1,10 @@
+#ifndef __SOUND_QTET_H
+#define __SOUND_QTET_H
+
+#define QTET_DEVICE_DESC		"{Infrasonic,Quartet},"
+
+#define VT1724_SUBDEVICE_QTET		0x30305349	/* Infrasonic Quartet */
+
+extern struct snd_ice1712_card_info  snd_vt1724_qtet_cards[];
+
+#endif	/* __SOUND_QTET_H */