From: Felix Homann <linuxaudio@showlabor.de>
To: Daniel Mack <daniel@caiaq.de>
Cc: tiwai@suse.de, alsa-devel@alsa-project.org,
Clemens Ladisch <clemens@ladisch.de>
Subject: Re: Need expert's advice - Fast Track Ultra (8R) dropping samples
Date: Thu, 07 Oct 2010 10:50:43 +0200 [thread overview]
Message-ID: <4CAD89E3.7080005@showlabor.de> (raw)
In-Reply-To: <20101007081010.GZ7159@buzzloop.caiaq.de>
[-- Attachment #1: Type: text/plain, Size: 629 bytes --]
Am 07.10.2010 10:10, schrieb Daniel Mack:
> On Thu, Oct 07, 2010 at 08:37:22AM +0200, Clemens Ladisch wrote:
>
>>
>> So this device expects the computer to take the sample clock from the
>> capture data. This is just like the UA-101; it should be possible to
>> write a similar driver (with opportunities for code sharing, and AFAIK
>> UAC 2 requires such a feedback mode, too).
>>
> Ah, that makes sense, yes. UAC2 calls this mode "implicit feedback".
> Felix, can you provide a dump of "lsusb -v" for this device?
>
> Daniel
>
I've attached a dump.
Thank you all for your increased interest!
Regards,
Felix
[-- Attachment #2: lsusb-ftu8r.txt --]
[-- Type: text/plain, Size: 9794 bytes --]
Bus 001 Device 003: ID 0763:2081 Midiman M-Audio RunTime DFU
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 ?
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 64
idVendor 0x0763 Midiman
idProduct 0x2081 M-Audio RunTime DFU
bcdDevice 1.51
iManufacturer 1 M-Audio
iProduct 2 Fast Track Ultra 8R
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 340
bNumInterfaces 5
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 5
bFunctionClass 255 Vendor Specific Class
bFunctionSubClass 1
bFunctionProtocol 0
iFunction 2 Fast Track Ultra 8R
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 1
bInterfaceProtocol 0
iInterface 2 Fast Track Ultra 8R
** UNRECOGNIZED: 0b 24 01 00 01 34 00 03 01 02 03
** UNRECOGNIZED: 0c 24 02 01 03 06 00 08 03 00 00 00
** UNRECOGNIZED: 09 24 03 02 01 01 00 01 00
** UNRECOGNIZED: 0c 24 02 03 01 01 00 08 03 00 00 00
** UNRECOGNIZED: 09 24 03 04 03 06 00 03 00
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 0
iInterface 0
** UNRECOGNIZED: 07 24 01 03 01 01 00
** UNRECOGNIZED: 14 24 02 01 08 03 18 04 44 ac 00 80 bb 00 88 58 01 00 77 01
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0138 1x 312 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 1
Transfer Type Isochronous
Synch Type None
Usage Type Data
wMaxPacketSize 0x0003 1x 3 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 0
iInterface 0
** UNRECOGNIZED: 07 24 01 02 01 01 00
** UNRECOGNIZED: 14 24 02 01 08 03 18 04 44 ac 00 80 bb 00 88 58 01 00 77 01
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0138 1x 312 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 2
bNumEndpoints 1
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 0
iInterface 0
** UNRECOGNIZED: 07 24 01 02 01 01 00
** UNRECOGNIZED: 14 24 02 01 08 03 18 04 44 ac 00 80 bb 00 88 58 01 00 77 01
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0138 1x 312 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 1 Audio
bInterfaceSubClass 3 MIDI Streaming
bInterfaceProtocol 0
iInterface 4 Fast Track Ultra 8R
MIDIStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 63
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 2
iJack 0
MIDIStreaming Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
Warning: Descriptor too short
bJackType 1 Embedded
bJackID 3
bNrInputPins 1
baSourceID( 0) 2
BaSourcePin( 0) 1
iJack 8
MIDIStreaming Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 3 (MIDI_OUT_JACK)
Warning: Descriptor too short
bJackType 2 External
bJackID 4
bNrInputPins 1
baSourceID( 0) 1
BaSourcePin( 0) 1
iJack 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x07 EP 7 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 8
MIDIStreaming Endpoint Descriptor:
bLength 5
bDescriptorType 37
bDescriptorSubtype 1 (GENERAL)
bNumEmbMIDIJack 1
baAssocJackID( 0) 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x87 EP 7 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 0
MIDIStreaming Endpoint Descriptor:
bLength 5
bDescriptorType 37
bDescriptorSubtype 1 (GENERAL)
bNumEmbMIDIJack 1
baAssocJackID( 0) 3
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 254 Application Specific Interface
bInterfaceSubClass 1 Device Firmware Update
bInterfaceProtocol 0
iInterface 5 M-Audio DFU
Device Firmware Upgrade Interface Descriptor:
bLength 9
bDescriptorType 33
bmAttributes 1
Will Not Detach
Manifestation Intolerant
Upload Unsupported
Download Supported
wDetachTimeout 2000 milliseconds
wTransferSize 1024 bytes
bcdDFUVersion 10.01
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
[-- Attachment #3: Type: text/plain, Size: 160 bytes --]
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next prev parent reply other threads:[~2010-10-07 8:50 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-25 9:57 Need expert's advice - Fast Track Ultra (8R) dropping samples Felix Homann
2010-10-01 11:00 ` Felix Homann
2010-10-01 16:29 ` Clemens Ladisch
2010-10-03 11:50 ` Felix Homann
2010-10-03 12:00 ` Daniel Mack
2010-10-05 7:21 ` Clemens Ladisch
2010-10-06 13:57 ` Felix Homann
2010-10-06 14:38 ` Clemens Ladisch
2010-10-06 16:31 ` Felix Homann
2010-10-07 6:37 ` Clemens Ladisch
2010-10-07 8:10 ` Daniel Mack
2010-10-07 8:50 ` Felix Homann [this message]
2010-10-07 11:35 ` Felix Homann
2010-10-08 6:26 ` Clemens Ladisch
2010-10-12 7:18 ` Daniel Mack
2010-10-12 8:18 ` Felix Homann
2010-10-12 10:26 ` Daniel Mack
2010-10-13 7:47 ` Felix Homann
2010-10-13 12:48 ` Daniel Mack
2010-10-15 7:23 ` Clemens Ladisch
2010-10-15 8:59 ` Daniel Mack
2010-10-15 11:08 ` Felix Homann
2010-10-15 14:21 ` Clemens Ladisch
2010-10-03 10:02 ` Daniel Mack
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