From: Ben Bell <bjb-alsa-devel@deus.net>
To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org
Subject: Re: Behringer WING usb audio - cyclic xruns dependent on periods/buffers
Date: Wed, 9 Dec 2020 12:16:23 +0000 [thread overview]
Message-ID: <20201209121634.17444F8020D@alsa1.perex.cz> (raw)
In-Reply-To: <s5hv9dcwhlx.wl-tiwai@suse.de>
[-- Attachment #1: Type: text/plain, Size: 1198 bytes --]
[...]
> > and learning abobut it led me to conclude that the Wing needs an entry in
> > the quirks list in set_sync_ep_implicit_fb_quirk to properly enable it:
> >
> > --- sound/usb/pcm.c.orig 2020-11-22 23:36:08.000000000 +0000
> > +++ sound/usb/pcm.c 2020-12-05 08:40:21.639600074 +0000
> > @@ -340,6 +345,7 @@
> > ep = 0x81;
> > ifnum = 3;
> > goto add_sync_ep_from_ifnum;
> > + case USB_ID(0x1397, 0x050b): /* Behringer Wing */
> > case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */
> > case USB_ID(0x0763, 0x2081):
> >
> > A week's worth of debugging and learning yielded a one line patch ;)
>
> That's a interesting piece of information :)
>
> Could you give lsusb -v output of the device? With the latest patch
> set, the driver can set up the implicit feedback mode automatically in
> certain cases. I'm not sure whether Behringer device follows that
> pattern. If not, we'd need to add the quirk manually.
I did wonder whether it was possible to automate this, as all I did
was looked out the endpoint with the Implicit Feedback flag set.
Fingers crossed it'll work.
Output attached.
bjb
[-- Attachment #2: behringer-wing-1397-050b-lsusb.txt --]
[-- Type: text/plain, Size: 40928 bytes --]
Bus 009 Device 005: ID 1397:050b BEHRINGER International GmbH
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x1397 BEHRINGER International GmbH
idProduct 0x050b
bcdDevice 1.02
iManufacturer 1 BEHRINGER
iProduct 3 WING
iSerial 2 WING-PP-09110504
bNumConfigurations 2
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0323
bNumInterfaces 5
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
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bDescriptorType 11
bFirstInterface 0
bInterfaceCount 3
bFunctionClass 1 Audio
bFunctionSubClass 0
bFunctionProtocol 32
iFunction 0
Interface Descriptor:
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bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 32
iInterface 3 WING
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bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 2.00
bCategory 8
wTotalLength 0x01df
bmControls 0x00
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bLength 8
bDescriptorType 36
bDescriptorSubtype 10 (CLOCK_SOURCE)
bClockID 41
bmAttributes 1 Internal fixed clock
bmControls 0x07
Clock Frequency Control (read/write)
Clock Validity Control (read-only)
bAssocTerminal 0
iClockSource 9 WING Internal Clock
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bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 2
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Transfer Type Isochronous
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bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 3 MIDI Streaming
bInterfaceProtocol 0
iInterface 0
MIDIStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 0x00a1
MIDIStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (MIDI_IN_JACK)
bJackType 1 Embedded
bJackID 1
iJack 0
MIDIStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (MIDI_IN_JACK)
bJackType 2 External
bJackID 25
iJack 11 WING MIDI DAW 1
MIDIStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (MIDI_IN_JACK)
bJackType 1 Embedded
bJackID 2
iJack 0
MIDIStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (MIDI_IN_JACK)
bJackType 2 External
bJackID 26
iJack 13 WING MIDI DAW 2
MIDIStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (MIDI_IN_JACK)
bJackType 1 Embedded
bJackID 3
iJack 0
MIDIStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (MIDI_IN_JACK)
bJackType 2 External
bJackID 27
iJack 15 WING MIDI DAW 3
MIDIStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (MIDI_IN_JACK)
bJackType 1 Embedded
bJackID 4
iJack 0
MIDIStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 2 (MIDI_IN_JACK)
bJackType 2 External
bJackID 28
iJack 17 WING MIDI Control
MIDIStreaming Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
bJackType 1 Embedded
bJackID 9
bNrInputPins 1
baSourceID( 0) 25
BaSourcePin( 0) 1
iJack 0
MIDIStreaming Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
bJackType 2 External
bJackID 17
bNrInputPins 1
baSourceID( 0) 1
BaSourcePin( 0) 1
iJack 10 WING MIDI DAW 1
MIDIStreaming Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
bJackType 1 Embedded
bJackID 10
bNrInputPins 1
baSourceID( 0) 26
BaSourcePin( 0) 1
iJack 0
MIDIStreaming Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
bJackType 2 External
bJackID 18
bNrInputPins 1
baSourceID( 0) 2
BaSourcePin( 0) 1
iJack 12 WING MIDI DAW 2
MIDIStreaming Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
bJackType 1 Embedded
bJackID 11
bNrInputPins 1
baSourceID( 0) 27
BaSourcePin( 0) 1
iJack 0
MIDIStreaming Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
bJackType 2 External
bJackID 19
bNrInputPins 1
baSourceID( 0) 3
BaSourcePin( 0) 1
iJack 14 WING MIDI DAW 3
MIDIStreaming Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
bJackType 1 Embedded
bJackID 12
bNrInputPins 1
baSourceID( 0) 28
BaSourcePin( 0) 1
iJack 0
MIDIStreaming Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
bJackType 2 External
bJackID 20
bNrInputPins 1
baSourceID( 0) 4
BaSourcePin( 0) 1
iJack 16 WING MIDI Control
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
bRefresh 0
bSynchAddress 0
MIDIStreaming Endpoint Descriptor:
bLength 8
bDescriptorType 37
bDescriptorSubtype 1 (GENERAL)
bNumEmbMIDIJack 4
baAssocJackID( 0) 1
baAssocJackID( 1) 2
baAssocJackID( 2) 3
baAssocJackID( 3) 4
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
bRefresh 0
bSynchAddress 0
MIDIStreaming Endpoint Descriptor:
bLength 8
bDescriptorType 37
bDescriptorSubtype 1 (GENERAL)
bNumEmbMIDIJack 4
baAssocJackID( 0) 9
baAssocJackID( 1) 10
baAssocJackID( 2) 11
baAssocJackID( 3) 12
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
next prev parent reply other threads:[~2020-12-09 12:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-26 18:06 Behringer WING usb audio - cyclic xruns dependent on periods/buffers Ben Bell
2020-11-27 9:20 ` Takashi Iwai
2020-11-28 9:36 ` Ben Bell
2020-12-03 20:06 ` Ben Bell
[not found] ` <20201203200633.CC66A2C16F@relay2.suse.de>
2020-12-04 8:04 ` Takashi Iwai
2020-12-05 14:43 ` Ben Bell
[not found] ` <20201205144406.854292C16C@relay2.suse.de>
2020-12-08 13:30 ` Takashi Iwai
2020-12-09 12:16 ` Ben Bell [this message]
[not found] ` <20201209121634.8B72A2C1D1@relay2.suse.de>
2020-12-09 12:29 ` Takashi Iwai
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