On Wed, Nov 28, 2012 at 08:34:52AM +0100, Stefan Hajnoczi wrote:
>
> Has the HD 500 ever worked with the driver? AFAIK support for HD 500
> is incomplete.
I don't know, it's the first time I try it out in Linux. I have the hardware
and it
would be awesome to help to add support for HD500 for Linux :)
> Please post the output of "lsusb -d 0e41:414d -v" while the device is
> attached. This will provide the USB capabilities of the device so we
> can try to find the correct interface, altsetting, and endpoints.
# lsusb -d 0e41:414d -v
Bus 001 Device 010: ID 0e41:414d Line6, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 255 Vendor Specific Subclass
bDeviceProtocol 255 Vendor Specific Protocol
bMaxPacketSize0 64
idVendor 0x0e41 Line6, Inc.
idProduct 0x414d
bcdDevice 0.00
iManufacturer 1 Line 6
iProduct 2 POD HD500
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 18
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x40
(Missing must-be-set bit!)
Self Powered
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 4 User
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 255 Vendor Specific Class
bDeviceSubClass 255 Vendor Specific Subclass
bDeviceProtocol 255 Vendor Specific Protocol
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
>
> If you want to play with this yourself, try editing the switch
> statements in driver.c:line6_probe() to use the interface, altsetting,
> and endpoint information from the lsusb output. This is just
> guesswork, if you want to be sure then you need to capture USB traffic
> from the Line6 Edit software to see how the Windows driver talks to
> the device.
Well, yes, I want to play :) But I have a very limited knowledge of USB kernel
(and
ALSA) development. I need to read some kernel documents and try to understand
the
code!
So, whare do you recommend me to begin with?
On the other hand, I can begin to submit checkpatch fixes so I get comfortable
with
the code.
In the kernel configuration, I didn't activate the debug options because i read
in
the list that they were to be obsoleted for general-purpose facilities (usbmon,
etc).
Would you recommend to activate those options anyway?
Best regards,
--
L. Alberto Giménez
JabberID [email protected]
GnuPG key ID 0x3BAABDE1
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