Add systemd hooks for MCU power state notifications from userspace

alchark · alchark · commit 2b21aada17ac · 2026-07-07T12:36:49.000+04:00
Signed-off-by: Alexey Charkov &lt;alchark@flipper.net&gt;
diff --git a/overlays/configs/systemd/system-sleep/flipper-one-mcu b/overlays/configs/systemd/system-sleep/flipper-one-mcu
@@ -0,0 +1,4 @@
+#!/bin/sh
+case "$1" in
+  pre) echo suspend-request > /sys/bus/i2c/drivers/flipper-one-mcu/*/cpustate ;;
+esac
diff --git a/overlays/configs/systemd/system/flipper-one-online.service b/overlays/configs/systemd/system/flipper-one-online.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=Report boot completion to the Flipper One MCU
+After=multi-user.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/bin/sh -c 'echo online > /sys/bus/i2c/drivers/flipper-one-mcu/*/cpustate'
+
+[Install]
+WantedBy=multi-user.target
diff --git a/overlays/configs/systemd/system/flipper-one-poweroff.service b/overlays/configs/systemd/system/flipper-one-poweroff.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=Report imminent power-off to the Flipper One MCU
+DefaultDependencies=no
+Before=shutdown.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c 'echo poweroff-request > /sys/bus/i2c/drivers/flipper-one-mcu/*/cpustate'
+
+[Install]
+WantedBy=poweroff.target
diff --git a/overlays/configs/systemd/system/flipper-one-reboot.service b/overlays/configs/systemd/system/flipper-one-reboot.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=Report imminent reboot to the Flipper One MCU
+DefaultDependencies=no
+Before=shutdown.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c 'echo reboot-request > /sys/bus/i2c/drivers/flipper-one-mcu/*/cpustate'
+
+[Install]
+WantedBy=reboot.target
diff --git a/overlays/configs/systemd/system/multi-user.target.wants/flipper-one-online.service b/overlays/configs/systemd/system/multi-user.target.wants/flipper-one-online.service
@@ -0,0 +1 @@
+/etc/systemd/system/flipper-one-online.service
diff --git a/overlays/configs/systemd/system/poweroff.target.wants/flipper-one-poweroff.service b/overlays/configs/systemd/system/poweroff.target.wants/flipper-one-poweroff.service
@@ -0,0 +1 @@
+/etc/systemd/system/flipper-one-poweroff.service
diff --git a/overlays/configs/systemd/system/reboot.target.wants/flipper-one-reboot.service b/overlays/configs/systemd/system/reboot.target.wants/flipper-one-reboot.service
@@ -0,0 +1 @@
+/etc/systemd/system/flipper-one-reboot.service

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+/etc/systemd/system/flipper-one-online.service`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+/etc/systemd/system/flipper-one-poweroff.service`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+/etc/systemd/system/flipper-one-reboot.service`