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chromium / chromiumos / third_party / modemmanager-next / refs/heads/stabilize-15786.58.B
commit9e458ffdea911abad66deecd587bdc0b40e29d22[log] [tgz]
authorAleksander Morgado <aleksandermj@chromium.org>Thu Feb 15 12:55:43 2024
committerChromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu Feb 15 20:27:34 2024
treea5889c86e4d4abaed16dd61e7e939930ccd0cb97
parent8e8afd0b431e384157d8dd9c276f9d92409a6f4a [diff]
UPSTREAM: quectel: disable periodic signal checks in MBIM modems

(cherry picked from commit 91828ecc659cb382502a28d93a0af294c312fcd2)

BUG=b:323583835
TEST=Monitor signal polling with EM060

Change-Id: Idd8514521f38b096367cf3d400033cb2fcdac7ec
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/modemmanager-next/+/5300540
Reviewed-by: Daniel Winkler <danielwinkler@google.com>
Tested-by: Aleksander Morgado <aleksandermj@google.com>
Reviewed-by: Eric Caruso <ejcaruso@chromium.org>
Commit-Queue: Aleksander Morgado <aleksandermj@google.com>
1 file changed
tree: a5889c86e4d4abaed16dd61e7e939930ccd0cb97
  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