Re: Support for EDIROL UM-3ex

[Brent Cook <busterbcook@yahoo.com>]

On Saturday 31 December 2005 21:54, Brent Cook wrote:
> Dear all,
>
> This is my naive attempt at adding ALSA device support. The attached patch
> provides support for the EDIROL UM-3ex. This is a 3-port USB midi interface
> with a built-in USB hub and the ability to chain 2 other UM-3x's in a
> master-slave configuration. I only have one, so I do not know how this
> works in practice.
>
> Though this is a 3-port device, I had to throw in that 4th 'Control'
> interface to the definition in order to make the 3rd port work. If I set
> in/out_cables to 0x000b, a 3rd interface appears on the driver, but it does
> nothing. Changing it to 0x000f allows the 3rd interface to work, but of
> course interface 4 does not work because it does not exist.
>
>  - Brent

Oh, and here is the relevant USB info for the device; maybe it explains the 
3rd port quirk.

T:  Bus=04 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#=  3 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=ff(vend.) Sub=00 Prot=ff MxPS=64 #Cfgs=  1
P:  Vendor=0582 ProdID=009a Rev= 1.00
S:  Manufacturer=EDIROL
S:  Product=UM-3
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 90mA
I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=03 Prot=00 Driver=snd-usb-audio
E:  Ad=01(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
I:  If#= 0 Alt= 1 #EPs= 2 Cls=ff(vend.) Sub=03 Prot=00 Driver=snd-usb-audio
E:  Ad=01(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=82(I) Atr=03(Int.) MxPS=  64 Ivl=1ms


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