Re: [Bluez-devel] Getting an adaptor to be supported (for SCO audio)

[Brad Midgley <bmidgley@xmission.com>]

Alexandros

It seems that hci routing of sco audio is only available on CSR chips.

SCO will be routed through the PCM hardware on your silicon wave chip 
but that PCM interface is not connected to anything in a usb dongle.

I have the same problem with the builtin infineon bluetooth on gumstix 
(see http://bluetooth-alsa.sf.net/embed.html for more)

Brad

Alexandros Vellis wrote:
> How would one go about making a dongle supported in Linux? Especially
> with regard to SCO audio.
> 
> Any pointers to what is needed and to places in the bluetooth code are
> welcome.
> 
> I have this dongle (its name: "Mars II, MII-792") which can establish
> rfcomm connections et al, but cannot transmit or receive audio:
> 
> 
> # hciconfig hci0 revision
> hci0:   Type: USB
>         BD Address: 00:11:F6:01:5F:56 ACL MTU: 120:20 SCO MTU: 64:0
>         Unsupported manufacturer
> 
> 
> 
> hci0:   Type: USB
>         BD Address: 00:11:F6:01:5F:56 ACL MTU: 120:20 SCO MTU: 64:0
>         UP RUNNING PSCAN ISCAN 
>         RX bytes:366 acl:0 sco:0 events:39 errors:0
>         TX bytes:485 acl:0 sco:0 commands:24 errors:0
>         Features: 0xff 0xff 0x05 0x38 0x18 0x18 0x00 0x00
>         Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
>         Link policy: RSWITCH HOLD SNIFF PARK 
>         Link mode: SLAVE ACCEPT 
>         Name: 'null'
>         Class: 0x3e0100
>         Service Classes: Networking, Rendering, Capturing
>         Device Class: Computer, Uncategorized
>         HCI Ver: 1.2 (0x2) HCI Rev: 0x0 LMP Ver: 1.2 (0x2) LMP Subver:
> 0x757
>         Manufacturer: Silicon Wave (11)
> 
> 
> 
> 
> T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=12  MxCh= 0
> D:  Ver= 1.10 Cls=e0(unk. ) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
> P:  Vendor=0c10 ProdID=0000 Rev=15.00
> S:  Manufacturer=SiW
> S:  Product=SiW
> S:  SerialNumber=565F01F61100
> C:* #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr= 50mA
> I:  If#= 0 Alt= 0 #EPs= 3 Cls=e0(unk. ) Sub=01 Prot=01 Driver=hci_usb
> E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
> E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
> E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
> I:  If#= 1 Alt= 0 #EPs= 2 Cls=e0(unk. ) Sub=01 Prot=01 Driver=hci_usb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
> I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(unk. ) Sub=01 Prot=01 Driver=hci_usb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
> I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(unk. ) Sub=01 Prot=01 Driver=hci_usb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
> I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(unk. ) Sub=01 Prot=01 Driver=hci_usb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
> I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(unk. ) Sub=01 Prot=01 Driver=hci_usb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
> I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(unk. ) Sub=01 Prot=01 Driver=hci_usb
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms
> 
> 
> 
> 
> 
> 
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