Date: Sat, 10 Nov 2012 14:55:53 +0100 From: Clemens Ladisch <clemens@ladisch.de> To: freebsd-multimedia@freebsd.org Subject: Re: USB audio 2.0 testers wanted Message-ID: <509E5CE9.9030000@ladisch.de> In-Reply-To: <CAPe0dBns7-NEM1QZkZG=7ZFba1uw7tyVS053BCy=bVabRJyN=A@mail.gmail.com> References: <201211080816.56068.hselasky@c2i.net> <20121109175928.0885f564@davenulle.org> <20121109190124.03b639f722907b66c1537fc2@getmail.no> <CAPe0dBkmmZq4Tt%2B0vAoPinOvdmWv=Q4YzVhxKWk1P0rQ5o7J=A@mail.gmail.com> <CAPe0dBns7-NEM1QZkZG=7ZFba1uw7tyVS053BCy=bVabRJyN=A@mail.gmail.com>
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Marcel Bonnet wrote:
> The bcdUSB field reports the highest version of USB the device
> supports.
But the USB specification is *not* the USB Audio specification.
USB Audio 2.0 devices can be recognized by a bFunctionProtocol
entry of 32 in lsusb, like this:
...
bDeviceProtocol 1 Interface Association
...
bFunctionClass 1 Audio
bFunctionSubClass 0
bFunctionProtocol 32
Regards,
Clemens
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