[illumos-Developer] USB ZeroCD(tm) support

[Cyril Plisko]

On Tue, Nov 23, 2010 at 5:16 PM, Carlos Almeida <xtrondo at gmail.com> wrote:
> Hello,
>
> one ISP from Portugal wants to add official support for OpenIndiana to their
> new device based on anyData ADU-520a, so they ask me to check if the device
> is currently supported, however this is another device with the "ZeroCD(tm)"
> feature, so when you plug it,  defaults to a USB device class 8  (Storage),
> in place of USB device class 2 (communications device), I had this same
> problem on my own device some months ago a Huawei E169, but on this one is
> possible to disable the  SD micro card with an AT command, and after that
> the device works with usbsacm(7D) driver without a problem.
>  As far I understand this kind of devices are currently a pain to work
> out-of-the-box on OpenIndiana,  Linux seems to handle this with something
> they call usb-mode-switch, so its possible by udev rules switch from class 8
> to class 2 device and vice-versa, also another way seems to be by using an
> USB blacklist, and the storage part of the device is black listed, how can
> we use in OpenIndiana this kind of devices ? maybe we can implement a way to
> handle this kind of devices, I really like to check if this anyData ADU-520a
> works with usbsacm(7D), I also understand that maybe this is more a issue
> for Illumos guys, but I bet most of them also read this list.

Hi Carlos,

I think you may want to look at cfgadm_usb(1M) manual page.
Specifically look for -x usb_config option. This will allow you to switch
between different configurations provided by the USB device.


-- 
Regards,
        Cyril