[LEDE-DEV] [PATCH 1/2] uqmi: add support for MBIM devices with QMI service

[Felix Fietkau]

On 2016-08-21 02:01, Bjørn Mork wrote:
> Many Qualcomm based devices offer a QMI service when running in MBIM
> mode. This is useful for a number of requests which have no MBIM
> counterpart.
> 
> This implementation is very basic, simply wrapping the QMI requests
> in an MBIM command. It is up to the user to make sure that the MBIM
> command sequence is valid, using a mix of umbim and uqmi requests.
> 
> umbim must be used to send "OPEN" before uqmi can issue any MBIM
> requests. Example:
> 
> 1. use umbim to open the session, using the '-n' option:
> 
> $ umbim -d /dev/cdc-wdm0 -n caps
>   devicetype: 0003 - remote
>   cellularclass: 0001
>   voiceclass: 0001 - no-voice
>   simclass: 0002
>   dataclass: 003C
>   smscaps: 0003
>   controlcaps: 0001
>   maxsessions: 0008
>   deviceid: 0145820007xxxxx
>   firmwareinfo: SWI9X30C_02.08.02.00
>   hardwareinfo: EM7455
> 
> 2. use uqmi to send an MBIM request, using the '-m' option:
> 
> $ uqmi -m -d /dev/cdc-wdm0 --get-serving-system
> {
>         "registration": "registered",
>         "plmn_mcc": 242,
>         "plmn_mnc": 1,
>         "plmn_description": "TELENOR",
>         "roaming": false
> }
> 
> 3. use umbim to close the open session, using the '-t X' option:
> 
> $ umbim -d /dev/cdc-wdm0 -t 2 caps
>   devicetype: 0003 - remote
>   cellularclass: 0001
>   voiceclass: 0001 - no-voice
>   simclass: 0002
>   dataclass: 003C
>   smscaps: 0003
>   controlcaps: 0001
>   maxsessions: 0008
>   deviceid: 0145820007xxxxx
>   firmwareinfo: SWI9X30C_02.08.02.00
>   hardwareinfo: EM7455
> 
> Signed-off-by: Bjørn Mork <bjorn at mork.no>
Applied with some cleanups and portability fixes.
I changed the code to use __packed and endian conversion from libubox.

- Felix