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gerrit.openbmc.org / openbmc / phosphor-hwmon

hwmon to dbus relay

Clone this repo:

Branches

  1. dd7b388 main: Fail gracefully on invalid device path by Willy Tu · 3 days ago master
  2. 9b1ec88 clang-tidy: Initial commit by Jayanth Othayoth · 2 weeks ago
  3. b7666e2 clang-tidy: replace NULL/0 with nullptr by Jayanth Othayoth · 2 weeks ago
  4. 6e87cb1 clang-tidy: delete default constructor by Jayanth Othayoth · 2 weeks ago
  5. 341e3cf Give negative-errno-on-fail a default by Matt Spinler · 6 months ago

phosphor-hwmon

Exposes generic hwmon entries as DBus objects. More information can be found at Sensor Architecture

To Build

To build this package, do the following steps:

  1. meson setup build
  2. ninja -C build

To clean the repository run rm -rf build.

D-Bus bus names

To enable the use of Linux features like cgroups prioritization and udev/systemd control, one instance of phosphor-hwmon is intended to be run per hwmon sysfs class instance.

This requires an algorithm for selecting a stable, well-known D-Bus busname.

The algorithm is <PREFIX>-<ID>.Hwmon<N> where PREFIX is a meson configurable prefix (BUSNAME_PREFIX=xyz.openbmc_project by default), ID is either a std::hash of the /sys/devices path backing the hwmon class instance or provided suffix value from the command line, and N is the implemented phosphor-hwmon D-Bus API version.