Hi,
I updated to the latest "for-next" branch and did some testing, including
digging out some old Roland/Boss stuff from my cupboard, and the following
all work for both capture and playback:
Boss Katana (specifically Katana 100W mk1)
Boss GT-1
Boss GT-001
Boss BR-80
Roland V-Studio 20
The only failure was a Roland SD-50 unit which worked on capture, but did
not play back unless capture was running at the same time. I think I
previously tested this with Takashi-san, and it didn't work then, but we
didn't follow up on it as we were focusing on other devices.
I may try to dig into this some more, but the lsusb follows if anyone wants
to make any suggestions. I'm actually not, personally, that worried about
this particular device being fully working as it works for me in Ardour
(which opens both capture and playback at the same time), but I thought I
would throw it in in case there was an obvious case which might apply to
other Roland/Boss devices.
Bus 001 Device 015: ID 0582:0114 Roland Corp. SD-50
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 0
bDeviceProtocol 255
bMaxPacketSize0 64
idVendor 0x0582 Roland Corp.
idProduct 0x0114 SD-50
bcdDevice 1.00
iManufacturer 1 Roland
iProduct 2 SD-50
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x00a7
bNumInterfaces 3
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 480mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 2
iInterface 0
** UNRECOGNIZED: 06 24 f1 01 00 00
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 2
iInterface 0
** UNRECOGNIZED: 07 24 01 01 00 01 00
** UNRECOGNIZED: 0b 24 02 01 02 03 18 01 44 ac 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
Usage Type Data
wMaxPacketSize 0x0140 1x 320 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 1
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 1
iInterface 0
** UNRECOGNIZED: 07 24 01 07 00 01 00
** UNRECOGNIZED: 0b 24 02 01 02 03 18 01 44 ac 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0140 1x 320 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 3
bInterfaceProtocol 0
iInterface 0
** UNRECOGNIZED: 06 24 f1 02 03 03
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 3
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0000
(Bus Powered)
Regards,
Keith
On Fri, 23 Apr 2021 at 10:29, Takashi Iwai <tiwai@xxxxxxx> wrote:
> On Thu, 22 Apr 2021 21:20:19 +0200,
> Mike Oliphant wrote:
> >
> > I had wondered whether the hardcoded endpoints were necessary (or always
> > accurate).
> >
> > This method seems much cleaner, and I can report that it is working as
> > expected (playback-only, record-only, and full duplex) on the BOSS GT-1.
>
> Thanks for confirmation.
>
> FWIW, the patches are on my for-next branch, destined for 5.13
> kernel.
>
>
> Takashi
>
--
--
Keith A Milner
