selecting configuration

[Hans Petter Selasky]

On Thursday 25 November 2010 16:50:46 Bernd Walter wrote:
> On Thu, Nov 25, 2010 at 02:37:31PM +0100, Hans Petter Selasky wrote:
> > On Thursday 25 November 2010 13:30:18 Bernd Walter wrote:
> > > I have a USB device with two alternative configurations.
> > > After enumerating the device I need to switch the device to
> > > configuration 1 via usbconfig.
> > > Do we have any kind of support to do this automatically?
> > 
> > Yes, see the USB quirks.
> > 
> > UQ_CFG_INDEX_1

Hi,

> 
> Ok - this is something to be compiled into the kernel - right?
> Is it possible to add a quirk with usbconfig after the device is
> already detected?

You can load the usb_quirk.ko.

Plug the device and run:

usbconfig -d x.y add_quirk <quirk>

At next plug the setting is remembered.

> devd won't work since it won't say anything as config 0 won't
> attach to any driver and ugen isn't listed there.
> Also the devd data would be missing the bus number.

--HPS