Accessing USB Device configured with more than one Configuration

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Hi All,

If USB Device is having more than one Configuration i.eUSB Device with Audio and HID Configuration. I have couple of questions :

1. I am able to see only one device in Linux as detected. i.e using lsusb. why ?
2. How device driver will be able to make decision that URB is for Audio or HID configuration ?
3. How many device driver is required for proper communication with this USB Device ? i.e separate device driver for Audio and HID or one device driver will do.
4. How can I initiated communciation with this device ? 

Looking for your response.

Regards,
_-_Mayank Rana_-_
"The greatest pleasure in life is to do what people say U cannot do."



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