Re: [PATCH] serial: Add Option GTM681W to qcserial device table.

[Dan Williams <dcbw@redhat.com>]

On Fri, 2013-05-24 at 20:25 +0200, Bjørn Mork wrote:
> Richard Weinberger <richard@nod.at> writes:
> > Am 24.05.2013 15:18, schrieb Bjørn Mork:
> >> Richard Weinberger <richard@nod.at> writes:
> >>
> >>> The Option GTM681W uses a qualcomm chip and can be
> >>> served by the qcserial device driver.
> >>
> >> Should it also be added to the qmi_wwan driver?
> >
> > Don't know. But I can happily test it. :)
> > Can you please explain me how to use the qmi_wwan driver?
> > I've never used it.
> 
> The QMI management protocol is delegated to userspace using a
> /dev/cdc-wdmX character device.  So you need a userspace component to
> test the driver, like for example libqmi. See 
> http://sigquit.wordpress.com/2012/08/20/an-introduction-to-libqmi/ for a
> short intro.

Various marketing collateral suggests the 681W is a Gobi3K and thus it
most certainly should also get added to qmi_wwan.  lsusb -v output for
it would be helpful too I think?

http://www.option.com/product/gtm681wgtm689w/

Dan

> This library is packaged in Debian.  Don't know the status of other
> distros. 
> 
> The driver supports dynamic device IDs, so if you have qcserial bound to
> all serial ports, and there is a QMI interface with no driver bound yet,
> then testing should be as easy as
> 
>  modprobe qmi_wwan
>  echo "0af0 8120" >/sys/bus/usb/drivers/qmi_wwan/new_id
>  qmicli -d /dev/cdc-wdm0 --dms-get-manufacturer
> 
> 
> 
> Bjørn
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