ALSA: usb-audio: add Novation Launchpad support

Add a quirk entry for the Novation Launchpad USB MIDI controller.

QUIRK_MIDI_FASTLANE gets renamed to *_RAW_BYTES because this quirk type
is now shared by different devices.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Tested-by: Jakob Flierl <jakob.flierl@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index 156cd07..25bce7e 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -784,7 +784,7 @@
 };
 
 /*
- * "raw" protocol: used by the MOTU FastLane.
+ * "raw" protocol: just move raw MIDI bytes from/to the endpoint
  */
 
 static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint* ep,
@@ -2122,7 +2122,7 @@
 		umidi->usb_protocol_ops = &snd_usbmidi_novation_ops;
 		err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
 		break;
-	case QUIRK_MIDI_FASTLANE:
+	case QUIRK_MIDI_RAW_BYTES:
 		umidi->usb_protocol_ops = &snd_usbmidi_raw_ops;
 		/*
 		 * Interface 1 contains isochronous endpoints, but with the same
@@ -2133,7 +2133,8 @@
 		 * interface 0, so we have to make sure that the USB core looks
 		 * again at interface 0 by calling usb_set_interface() on it.
 		 */
-		usb_set_interface(umidi->dev, 0, 0);
+		if (umidi->usb_id == USB_ID(0x07fd, 0x0001)) /* MOTU Fastlane */
+			usb_set_interface(umidi->dev, 0, 0);
 		err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
 		break;
 	case QUIRK_MIDI_EMAGIC: