[alsa-devel] Roland/Edirol M-16DX

[Takashi Iwai]

At Sun, 15 Mar 2009 04:06:29 +0200,
Lasse Kärkkäinen wrote:
> 
> >> 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 :)

I didn't get any response about the patch, so I couldn't apply it...

> Note: playback doesn't actually work because it is not properly 
> synchronized.

... and apparently the patch is buggy.

> The device also doesn't have any MIDI ports, but maybe 
> that's for remote control of parameters?

Maybe.

Seriously, without the response from testers, the development can
never go on.  It'd be helpful if you give back the result precisely
and soon at the next time...


thanks,

Takashi