[linux-audio-user] Edirol UA-20 not seen by alsa in ADVANCED mode - ADDITIONAL INFO
Cesare
cesare at poeticstudios.com
Tue Nov 22 04:39:13 EST 2005
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
>
>
>
>
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