[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>

2 files changed, 24 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,
diff --git a/sound/usb/usbquirks.h b/sound/usb/usbquirks.h
index 6190ada00e38..8f348611bb00 100644
--- a/sound/usb/usbquirks.h
+++ b/sound/usb/usbquirks.h
@@ -204,6 +204,28 @@ YAMAHA_DEVICE(0x7010, "UB99"),
         }
 },
 {
+        USB_DEVICE(0x0582, 0x009a),
+        .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+                .vendor_name = "EDIROL",
+                .product_name = "UM-3ex",
+                .ifnum = QUIRK_ANY_INTERFACE,
+                .type = QUIRK_COMPOSITE,
+                .data = (const struct snd_usb_audio_quirk[]) {
+                        {
+                                .ifnum = 0,
+                                .type = QUIRK_MIDI_FIXED_ENDPOINT,
+                                .data = & (const struct snd_usb_midi_endpoint_info) {
+                                        .out_cables = 0x000f,
+                                        .in_cables  = 0x000f
+                                }
+                        },
+                        {
+                                .ifnum = -1
+                        }
+                }
+        }
+},
+{
         USB_DEVICE(0x0582, 0x0002),
         .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
                 .vendor_name = "EDIROL",