psu-ng: INPUT_HISTORY syncHistory
Add in the function that syncs the power supply input history data
between all the installed power supplies.
Use the GPIO line name instead of gpiochip and number. Use libgpiod via
helper utility. Create a toggleLowHigh() to use for synchronizing the
input history.
Add in indicator and helper functions to indicate a syncHistory is
needed if a power supply goes from missing to present.
Trace when syncHistory is called. This should be infrequent enough that
I do not think it would be a problem.
Initial testing on Rainier 2S2U did not need a lengthy delay between
lowering and raising the power-ffs-sync-history GPIO, but testing on
Rainier 2S4u required a longer delay.
Depends-On: Ib1ac2456f7f715360d089dfa4b6b379b516439ab
Change-Id: I022806155139d70fb4a42cc27eb9f279f6a3aedc
Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
diff --git a/phosphor-power-supply/psu_manager.hpp b/phosphor-power-supply/psu_manager.hpp
index 8725ce8..46560a7 100644
--- a/phosphor-power-supply/psu_manager.hpp
+++ b/phosphor-power-supply/psu_manager.hpp
@@ -377,6 +377,25 @@
* the /org/open_power/sensors root D-Bus path.
*/
sdbusplus::server::manager_t historyManager;
+
+ /**
+ * @brief GPIO to toggle to 'sync' power supply input history.
+ */
+ std::unique_ptr<GPIOInterfaceBase> syncHistoryGPIO = nullptr;
+
+ /**
+ * @brief Toggles the GPIO to sync power supply input history readings
+ *
+ * This GPIO is connected to all supplies. This will clear the
+ * previous readings out of the supplies and restart them both at the
+ * same time zero and at record ID 0. The supplies will return 0
+ * bytes of data for the input history command right after this until
+ * a new entry shows up.
+ *
+ * This will cause the code to delete all previous history data and
+ * start fresh.
+ */
+ void syncHistory();
};
} // namespace phosphor::power::manager