Re: composite gadget support

Thanks a lot Alan!
Yes it is multiple configurations -only one configuration installed at a
time- I am after.
 This means that the problem then is between my chair and my keyboard
which I am used to...
One last thing if I may, how do I turn configurations on and off? Can I
do that at runtime and if I can, based on what?
Thanks everyone for the support
jorge

______________________________
Jorge Ramirez-Ortiz
[email protected]
0034 952 415 479
0044 1707 35 2669
 

-----Original Message-----
From: Alan Stern [mailto:[email protected]] 
Sent: 29 October 2007 14:37
To: Ramirez-Ortiz, Jorge
Cc: David Brownell; [email protected]
Subject: Re: [linux-usb-devel] composite gadget support

On Mon, 29 Oct 2007, Ramirez-Ortiz, Jorge wrote:

> Thanks David
> What I am trying to do is to combine two drivers into a single one (a
> usb2print propietary driver and the g_ether driver). 
> Instead of writing a composite driver, would it be possible to write
> just two configurations? To be honest I don't think I understand the
> distinction between functions and configurations.

Configurations are mutually exclusive; only one configuration can be
installed at any time.  A configuration can contain multiple
interfaces, and all of those interfaces are available whenever the
configuration is installed.

So if you want your device to act as a printer and ethernet interface 
simultaneously then you have to use multiple interfaces (i.e., make it 
a composite gadget).  If you want only one function or the other to be 
available at any time, then you can use multiple configs.

Alan Stern


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