Backport qmi wwan driver to linux 2.6.32 on ARM

[Dan Williams]

On Wed, 2015-08-12 at 09:10 +0000, 蒋品 wrote:
> Hi, Bjørn
> 
>        Thanks a lot for your kind help and reminding. The backport kernel compilation failed due to it's not a vanilla kernel, it already got some function backported from 3.x.  So we see some redefinition error.
> 
>         I commented out some lines in the file and got the compat.ko /usbnet.ko / cdc-wdm.ko/ qmi_wwan.ko
>         compiled and loaded on the target system.
> 
>         I am now playing with the modeswitch, /dev/cdc-wdm0 has appeared. Does it mean the device is ready and I can get a qmi-cli/uqmi talk to it ?  Do I have to get something like /dev/qmi_wwan appear in the system ?

/dev/cdc-wdmX (there can be more than one) is all you need.  You can
then use "qmicli -d /dev/cdc-wdm0 --dms-get-capabilities" to talk to the
QMI port and see if everything is working correctly.  There should also
be an ethernet interface exposed by the modem, separately from the
cdc-wdm interface.  The ethernet interface is what you would configure
the IP settings on through either DHCP (supported by many modems),
static IP (through settings returned by QMI), or possibly IPv6 RA.

Dan

> BRs, Jiang Pin ( Richard )
> 
> 2015年8月11日 上午12:31，Bjørn Mork <bjorn at mork.no> 写道：
> > 蒋品 <jiang.pin at icloud.com> writes:
> >
> >> I wonder if it is possible to backport the qmi driver to linux 2.6.32?
> >
> > It is. But the only remotely sane reason to use a kernel that old is
> > that it is supported by some hardware vendor. Use that support.
> >
> >> wildc at wildc-HP-Pavilion-dv4-Notebook-PC:~/backports-3.14-1$ echo $KLIB_BUILD
> >> /home/wildc/ArDroine2.0_LinuxSource/kernel/
> >>
> >> ARCH=arm CROSS_COMPILE=~/tool-chain/arm-2009q1/bin/arm-none-linux-gnueabi- make
> >> CC [M] /home/wildc/backports-3.14-1/compat/main.o
> >> In file included from /home/wildc/backports-3.14-1/compat/compat-2.6.34.h:8,
> >> from /home/wildc/backports-3.14-1/compat/main.c:5:
> >> /home/wildc/backports-3.14-1/backport-include/linux/mmc/sdio_func.h:21: error: redefinition of typedef 'mmc_pm_flag_t'
> >> include/linux/mmc/pm.h:25: error: previous declaration of 'mmc_pm_flag_t' was here
> >
> > In what way is this supposed to be related to the qmi_wwan driver? Did
> > you even look at the code you are trying to build?
> >
> >
> >
> > Bjørn
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