Hi All,
[ Sorry about reposting. Someone suggested LAD, so I reposted this to
both LAD and LAU. ]
I bought BOSS BR-80 recently, which can be used as USB audio
interface. Unfortunately, Fedora15(2.6.38.8) didn't recognize it.
Maybe someone already made BR-80 work but my google search
didn't show any hint, so I decided to hack.
I added an entry to quirks-table.h for BR-80 (see below) and recompiled
the snd-usb-audio module and re-installed the module.
I also added a dmex and softvol config to .asoundrc(see also below).
It now works as a playback device, which satisfies my current requirements.
The capture interface and MIDI seems not working.
The lsusb output contains a couple of 'UNRECOGNIZED' lines.
lsusb output,/proc/asound/, etc are also below.
Although I might not use these interfaces, I'm just curious to hack.
Can anyone suggest where I should look at?
Thanks,
Kaz
========================================
--- sound/usb/quirks-table.h.orig 2011-08-06 21:17:32.686663306 -0500
+++ sound/usb/quirks-table.h 2011-07-26 19:05:21.790767824 -0500
@@ -1611,6 +1611,34 @@
}
}
},
+{
+ USB_DEVICE(0x0582, 0x0130),
+ .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+ /* .vendor_name = "BOSS", */
+ /* .product_name = "MICRO BR-80", */
+ .ifnum = QUIRK_ANY_INTERFACE,
+ .type = QUIRK_COMPOSITE,
+ .data = (const struct snd_usb_audio_quirk[]) {
+ {
+ .ifnum = 0,
+ .type = QUIRK_AUDIO_STANDARD_INTERFACE
+ },
+ {
+ .ifnum = 1,
+ .type = QUIRK_AUDIO_STANDARD_INTERFACE
+ },
+ {
+ .ifnum = 2,
+ .type = QUIRK_MIDI_STANDARD_INTERFACE
+ },
+ {
+ .ifnum = -1
+ }
+ }
+ }
+},
+
+
========================================
$HOME/.asoundrc
pcm.dmixer {
type dmix
ipc_key 333444 # uniq val
slave {
pcm { type hw; card BR80AUDIO; }
period_time 0
period_size 1024
buffer_size 8192
rate 44100
}
bindings {
0 0
1 1
}
}
#http://alsa.opensrc.org/How_to_use_softvol_to_control_the_master_volume
pcm.softvol {
type softvol
slave {
pcm "dmixer"
}
control {
name "Master"
card 0 # is this right?
}
}
pcm.!default {
type plug
slave.pcm "softvol"
}
========================================
$ find /proc/asound/BR80AUDIO/ -type f
/proc/asound/BR80AUDIO/id
/proc/asound/BR80AUDIO/usbbus
/proc/asound/BR80AUDIO/usbid
/proc/asound/BR80AUDIO/stream0
/proc/asound/BR80AUDIO/midi0
/proc/asound/BR80AUDIO/pcm0p/sub0/status
/proc/asound/BR80AUDIO/pcm0p/sub0/sw_params
/proc/asound/BR80AUDIO/pcm0p/sub0/hw_params
/proc/asound/BR80AUDIO/pcm0p/sub0/info
/proc/asound/BR80AUDIO/pcm0p/xrun_debug
/proc/asound/BR80AUDIO/pcm0p/info
========================================
This message appears in kernel log
[81902.426215] ALSA sound/usb/midi.c:1680: MIDIStreaming interface
descriptor not found
========================================
lsusb output
Bus 002 Device 008: ID 0582:0130 Roland Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 0
bDeviceProtocol 255
bMaxPacketSize0 64
idVendor 0x0582 Roland Corp.
idProduct 0x0130
bcdDevice 0.00
iManufacturer 1
iProduct 2
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 176
bNumInterfaces 4
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 2
iInterface 0
** UNRECOGNIZED: 06 24 f1 01 00 00
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 2
iInterface 0
** UNRECOGNIZED: 07 24 01 01 00 01 00
** UNRECOGNIZED: 0b 24 02 01 02 04 18 01 44 ac 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x0d EP 13 OUT
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x0038 1x 56 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 1
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 2
bInterfaceProtocol 1
iInterface 0
** UNRECOGNIZED: 07 24 01 07 00 01 00
** UNRECOGNIZED: 0b 24 02 01 02 04 18 01 44 ac 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x8e EP 14 IN
bmAttributes 37
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Implicit feedback Data
wMaxPacketSize 0x0038 1x 56 bytes
bInterval 1
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 3
bInterfaceProtocol 0
iInterface 0
** UNRECOGNIZED: 06 24 f1 02 01 01
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 3
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
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Received on Mon Aug 8 00:15:03 2011
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