Google Git
Sign in
chromium / chromiumos / third_party / modemmanager-next / refs/heads/stabilize-15857.B
commita73945ea4efd1bd868a6b2ebece3a628108f491b[log] [tgz]
authorUjjwal Pande <ujjwalpande@google.com>Thu Apr 04 23:08:21 2024
committerChromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Apr 10 16:00:26 2024
tree61e23c301372bc955ec4438d212ba0bcead144e0
parent464cace5b654b1e2a85db8e9fbe1de0961ff920a [diff]
CHROMIUM: ModemManager: Avoid custom ATT hack on L850 MR8

b/224986971 is fixed in L850 MR8. This change is to check for
firmware version and not run the  custom hack on L850
devices running MR8.

BUG=b:318732999
TEST=Tested on Vilboz360 with MR8 and fw version < MR8

Change-Id: I56b89431a8986d3af17d895bc3c31351990065b6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/modemmanager-next/+/5425494
Tested-by: Ujjwal Pande <ujjwalpande@google.com>
Reviewed-by: Aleksander Morgado <aleksandermj@google.com>
Commit-Queue: Ujjwal Pande <ujjwalpande@google.com>
3 files changed
tree: 61e23c301372bc955ec4438d212ba0bcead144e0
  1. build-aux/
  2. cli/
  3. data/
  4. docs/
  5. examples/
  6. include/
  7. introspection/
  8. libmm-glib/
  9. libqcdm/
  10. po/
  11. src/
  12. test/
  13. tools/
  14. vapi/
  15. .editorconfig
  16. .gitignore
  17. .gitlab-ci.yml
  18. AUTHORS
  19. COPYING
  20. COPYING.LIB
  21. DIR_METADATA
  22. meson.build
  23. meson_options.txt
  24. NEWS
  25. OWNERS
  26. PRESUBMIT.cfg
  27. README.chromium
  28. README.md
  29. RELEASING
  30. unblocked_terms.txt
README.md

ModemManager

ModemManager provides a unified high level API for communicating with mobile broadband modems, regardless of the protocol used to communicate with the actual device (Generic AT, vendor-specific AT, QCDM, QMI, MBIM...).

Using

ModemManager is a system daemon and is not meant to be used directly from the command line. However, since it provides a DBus API, it is possible to use ‘dbus-send’ commands or the new ‘mmcli’ command line interface to control it from the terminal. The devices are queried from udev and automatically updated based on hardware events, although a manual re-scan can also be requested to look for RS232 modems.

Implementation

ModemManager is a DBus system bus activated service (meaning it's started automatically when a request arrives). It is written in C, using glib and gio. Several GInterfaces specify different features that the modems support, including the generic MMIfaceModem3gpp and MMIfaceModemCdma which provide basic operations for 3GPP (GSM, UMTS, LTE) or CDMA (CDMA1x, EV-DO) modems. If a given feature is not available in the modem, the specific interface will not be exported in DBus.

Plugins

Plugins are loaded on startup, and must implement the MMPlugin interface. It consists of a couple of methods which tell the daemon whether the plugin supports a port and to create custom MMBroadbandModem implementations. It most likely makes sense to derive custom modem implementations from one of the generic classes and just add (or override) operations which are not standard. There are multiple fully working plugins in the plugins/ directory that can be used as an example for writing new plugins. Writing new plugins is highly encouraged! The plugin API is open for changes, so if you're writing a plugin and need to add or change some public method, feel free to suggest it!

License

The ModemManager and mmcli binaries are both GPLv2+. The libmm-glib library is LGPLv2+.

Code of Conduct

Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms, which you can find in the following link: https://www.freedesktop.org/wiki/CodeOfConduct

CoC issues may be raised to the project maintainers at the following address: modemmanager-devel-owner@lists.freedesktop.org