>> This device doesn't seem to be supported yet. Does Roland make the
>> specifications available, etc? The device is not compatible with USB
>> Audio, but rather uses Vendor Specific Class.
>
> It appears to have most of the audio class descriptors, so it should be
> possible to tell the driver to just use it.
>
> Please try to add the following entry somewhere in sound/usb/usbquirks.h
> and to recompile the driver:
>
>
> {
> /* Edirol M-16DX */
> USB_DEVICE(0x0582, 0x00c4),
> .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
> .ifnum = QUIRK_ANY_INTERFACE,
> .type = QUIRK_COMPOSITE,
> .data = (const struct snd_usb_audio_quirk[]) {
> {
> .ifnum = 0,
> .type = QUIRK_AUDIO_STANDARD_INTERFACE
> },
> {
> .ifnum = 1,
> .type = QUIRK_AUDIO_STANDARD_INTERFACE
> },
> {
> .ifnum = 2,
> .type = QUIRK_MIDI_FIXED_ENDPOINT,
> .data = & (const struct snd_usb_midi_endpoint_info) {
> .out_cables = 0x0001,
> .in_cables = 0x0001
> }
> },
> {
> .ifnum = -1
> }
> }
> }
> },
Could you add this quirk to the alsa-driver distribution as well? I'm
getting tired of patching it myself for every new release :)
Note: playback doesn't actually work because it is not properly
synchronized. The device also doesn't have any MIDI ports, but maybe
that's for remote control of parameters?
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