[ALSA] Add support for EDIROL UM-3ex

Modules: USB generic driver

This is my naive attempt at adding ALSA device support. The attached
patch provides support for the EDIROL UM-3ex. This is a 3-port USB midi
interface with a built-in USB hub and the ability to chain 2 other
UM-3x's in a master-slave configuration. I only have one, so I do not
know how this works in practice.

Though this is a 3-port device, I had to throw in that 4th 'Control' interface
to the definition in order to make the 3rd port work. If I set in/out_cables
to 0x000b, a 3rd interface appears on the driver, but it does nothing.
Changing it to 0x000f allows the 3rd interface to work, but of course
interface 4 does not work because it does not exist.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c
index f15b021c3ce8..905e33e60681 100644
--- a/sound/usb/usbmidi.c
+++ b/sound/usb/usbmidi.c
@@ -1092,6 +1092,8 @@ static struct {
         { USB_ID(0x086a, 0x0001), 8, "%s Broadcast" },
         { USB_ID(0x086a, 0x0002), 8, "%s Broadcast" },
         { USB_ID(0x086a, 0x0003), 4, "%s Broadcast" },
+        /* Edirol UM-3ex */
+        { USB_ID(0x0582, 0x009a), 3, "%s Control" },
 };
 
 static void snd_usbmidi_init_substream(struct snd_usb_midi* umidi,