[PATCH 1/1] Adding some Roland devices' USB digital audio

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A few days ago, I found this excellent informational post, and that Mike
Oliphant's patch is in mainline now:
http://blog.nostatic.org/2020/01/getting-boss-gt-1-effects-processor-to.html

Since I was fairly certain it applies to the Roland devices I own, I added
my USB IDs.  Wonderfully, now USB audio capture seems to be working
perfectly from the three devices I can test: the INTEGRA-7, Boutique D-05,
& VG-99!

I've also tested all three for playback capability, since that's implied
when a device is using implicit feedback, which I hadn't realized the first
time around.  Anyway, they all seem to be working as expected for playback
too.  There are two caveats for playback, though:

1. The INTEGRA-7 won't output playback in any mode other than its "96[kHz]"
setting, though capture works with all of its Sample Rate choices.

2. The D-05's analog outputs aren't as clean as the other two devices, with
little quiet occasional clicks sounding something like dust on an LP
record's play.  Possibly that can be chalked up to it having only 1/8"
minijack connections, but I suspect something more driver-related as I've
not noticed it during use as a synthesizer.  Its firmware version is
"1.02(1033)," so not up-to-date which may mean it's just the hardware
itself, but I've decided not to risk any changes with it yet.  If I knew I
could revert it, that would be another story.  Also USB captures from it,
play perfectly cleanly on my usual sound device, the Edirol UA-4FX.

You probably already know this, as someone coded them, but here are the
commands I've had to use for format compatibility with these devices:

D-05:
    arecord -D hw:Boutique -f S32_LE -c 2 -r 96000 ./file.wav
    aplay -D hw:Boutique -f S32_LE -c 2 -r 96000 ./file.wav
INTEGRA-7:
    arecord -D hw:INTEGRA7 -f S32_LE -c 2 -r 96000 ./file.wav
        (then change MENU->SYSTEM->SOUND->Sampling Rate to 44.1 [kHz]
(otherwise its 96[kHz])
         and  change MENU->SYSTEM->SOUND->Ext Part Source Select to USB
AUDIO)
    arecord -D hw:INTEGRA7 -f S32_LE -c 2 -r 44100 ./file-44100.wav
    aplay -D hw:INTEGRA7 -f S32_LE -c 2 -r 44100 ./file-44100.wav
VG-99:
    arecord -D hw:VG99 -f S24_3LE -c 2 -r 44100 ./file.wav
    aplay -D hw:VG99 -f S24_3LE -c 2 -r 44100 ./file.wav

I searched a bit for other Roland devices people have had USB digital audio
issues with over the years, and took the liberty of adding them to the
patch too.  Likely there are still many more, especially in the Boutique
line, but I couldn't find their USB IDs.

I have another of the devices I added, with the patch, arriving soon (the
R-26) so I'll have to get back to you with how that works too.

I hope this can be added to the mainline kernel too, as this support should
help many that have struggled.  I, certainly, have been hoping somebody
would figure this out for quite a while, and even bought a USB
through/monitoring device to try to develop it myself (sadly, the software
supporting that has its own bugs, so I probably should've just used
wireshark).  Suffice it to say, I'm quite happy to have this figured out,
and to not have to delve into stuff I know nothing about! :)

Thanks to anyone looking into adding this,

  Lucas

The patch follows:
diff -Nurp linux-5.11.9.orig/sound/usb/implicit.c
linux-5.11.9.roland/sound/usb/implicit.c
--- linux-5.11.9.orig/sound/usb/implicit.c 2021-03-24 05:54:19.000000000
-0500
+++ linux-5.11.9.roland/sound/usb/implicit.c 2021-03-26 21:43:10.177824402
-0500
@@ -71,27 +71,55 @@ static const struct snd_usb_implicit_fb_
   .ep_num = 0x84, .iface = 0 }, /* MOTU MicroBook II */

  /* No quirk for playback but with capture quirk (see below) */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x00a6), /* Roland JUNO-G */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x00ad), /* Roland SH-201 */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x00b2), /* Roland VG-99 */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x00c7), /* Roland V-Synth GT */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x0111), /* Roland GAIA SH-01 */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x0120), /* Roland OCTA-CAPTURE */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x012b), /* Roland DUO-CAPTURE */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x012f), /* Roland QUAD-CAPTURE */
  IMPLICIT_FB_SKIP_DEV(0x0582, 0x0130), /* BOSS BR-80 */
- IMPLICIT_FB_SKIP_DEV(0x0582, 0x0171),   /* BOSS RC-505 */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x0138), /* BOSS RC-300 */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x013e), /* Roland R-26 */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x015b), /* Roland INTEGRA-7 */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x0171), /* BOSS RC-505 */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x017c), /* Roland TR-8 */
  IMPLICIT_FB_SKIP_DEV(0x0582, 0x0185), /* BOSS GP-10 */
  IMPLICIT_FB_SKIP_DEV(0x0582, 0x0189), /* BOSS GT-100v2 */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x01b5), /* Roland JP-08 */
  IMPLICIT_FB_SKIP_DEV(0x0582, 0x01d6), /* BOSS GT-1 */
  IMPLICIT_FB_SKIP_DEV(0x0582, 0x01d8), /* BOSS Katana */
  IMPLICIT_FB_SKIP_DEV(0x0582, 0x01e5), /* BOSS GT-001 */
- IMPLICIT_FB_SKIP_DEV(0x0582, 0x0203),   /* BOSS AD-10 */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x01ff), /* Roland D-05 */
+ IMPLICIT_FB_SKIP_DEV(0x0582, 0x0203), /* BOSS AD-10 */

  {} /* terminator */
 };

 /* Implicit feedback quirk table for capture: only FIXED type */
 static const struct snd_usb_implicit_fb_match capture_implicit_fb_quirks[]
= {
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x00a6, 0x0d, 0x01), /* Roland JUNO-G */
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x00ad, 0x0d, 0x01), /* Roland SH-201 */
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x00b2, 0x0d, 0x01), /* Roland VG-99 */
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x00c7, 0x0d, 0x01), /* Roland V-Synth GT */
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x0111, 0x0d, 0x01), /* Roland GAIA SH-01 */
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x0120, 0x0d, 0x01), /* Roland OCTA-CAPTURE
*/
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x012b, 0x0d, 0x01), /* Roland DUO-CAPTURE
*/
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x012f, 0x0d, 0x01), /* Roland QUAD-CAPTURE
*/
  IMPLICIT_FB_FIXED_DEV(0x0582, 0x0130, 0x0d, 0x01), /* BOSS BR-80 */
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x0138, 0x0d, 0x01), /* BOSS RC-300 */
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x013e, 0x0d, 0x01), /* Roland R-26 */
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x015b, 0x0d, 0x01), /* Roland INTEGRA-7 */
  IMPLICIT_FB_FIXED_DEV(0x0582, 0x0171, 0x0d, 0x01), /* BOSS RC-505 */
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x017c, 0x0d, 0x01), /* Roland TR-8 */
  IMPLICIT_FB_FIXED_DEV(0x0582, 0x0185, 0x0d, 0x01), /* BOSS GP-10 */
  IMPLICIT_FB_FIXED_DEV(0x0582, 0x0189, 0x0d, 0x01), /* BOSS GT-100v2 */
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x01b5, 0x0d, 0x01), /* Roland JP-08 */
  IMPLICIT_FB_FIXED_DEV(0x0582, 0x01d6, 0x0d, 0x01), /* BOSS GT-1 */
  IMPLICIT_FB_FIXED_DEV(0x0582, 0x01d8, 0x0d, 0x01), /* BOSS Katana */
  IMPLICIT_FB_FIXED_DEV(0x0582, 0x01e5, 0x0d, 0x01), /* BOSS GT-001 */
+ IMPLICIT_FB_FIXED_DEV(0x0582, 0x01ff, 0x0d, 0x01), /* Roland D-05 */
  IMPLICIT_FB_FIXED_DEV(0x0582, 0x0203, 0x0d, 0x01), /* BOSS AD-10 */

  {} /* terminator */



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