Re: [linux-audio-user] Edirol UA-20 not seen by alsa in ADVANCED mode - ADDITIONAL INFO

From: Cesare <cesare@email-addr-hidden>
Date: Tue Nov 22 2005 - 11:39:13 EET

Thank you very much, Clemens.

But what should I get to recompile? Just 'usbquirks.h'? O the whole
usb-audio driver source?

Cesare

Clemens Ladisch wrote:

>Cesare Marilungo wrote:
>
>
>
>>This is my lsusb -v output:
>>
>>Bus 001 Device 002: ID 0582:0025 Roland Corp.
>> ...
>> bcdDevice 1.01
>> ...
>> Interface Descriptor:
>> bLength 9
>> bDescriptorType 4
>> bInterfaceNumber 1
>> bAlternateSetting 1
>> bNumEndpoints 1
>> bInterfaceClass 255 Vendor Specific Class
>> bInterfaceSubClass 2
>> bInterfaceProtocol 0
>> iInterface 0
>> Endpoint Descriptor:
>> bLength 9
>> bDescriptorType 5
>> bEndpointAddress 0x01 EP 1 OUT
>> bmAttributes 9
>> Transfer Type Isochronous
>> Synch Type Adaptive
>> Usage Type Data
>> wMaxPacketSize 0x0120 bytes 288 once
>> bInterval 1
>> bRefresh 0
>> bSynchAddress 0
>>
>>
>
>It seems some moron at Roland made a new revision of this device and left out
>the class-specific descriptors that would have told the driver what sample
>format to use.
>
>I've changed the driver to use a hard-coded sample format for the UA-20.
>This should be on the public CVS servers in a hour or so.
>
>
>HTH
>Clemens
>
>
>
>
Received on Tue Nov 22 12:15:06 2005

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