fp6-no-suspend -> fp6-device-tweaks: + the three IMU-critical /etc files

Full-system audit on the flashed phone found the IMU dead: the journal's
documented reinstall-loss trio (inv-icm42600-spi modules-load - fallback-only
SPI node never coldplugs; the accel poll udev rule for auto-rotate; the
iio-sensor-proxy libssc-crash restart drop-in). All device-critical, none
personal - now packaged.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

aports/device/fp6-device-tweaks/81-fp6-accel-poll.rules

@@ -0,0 +1,15 @@
+# FP6 / inv_icm42600: force iio-sensor-proxy onto its POLL accel backend.
+#
+# inv_icm42600 registers no IIO trigger (software kfifo buffer pushed from the
+# INT1 handler), but it does expose scan_elements/, so 80-iio-sensor-proxy.rules
+# tags the accel with BOTH "iio-poll-accel" and "iio-buffer-accel".
+# iio-sensor-proxy 3.9 tries iio-buffer-accel first, fails the trigger lookup
+# ("Could not find trigger name associated with ...") and does NOT fall back to
+# polling -- it registers the device anyway, so HasAccelerometer is true while
+# sensor_device stays NULL. Every ClaimAccelerometer then hits
+# "driver_set_polling: assertion sensor_device failed", AccelerometerOrientation
+# is stuck at "undefined" and Plasma auto-rotate is dead.
+#
+# Glob the name: the DTS carries an icm42630/icm42631 compatible pair, so the
+# IIO name follows whichever the fallback binds (see journal/imu/status.md).
+SUBSYSTEM=="iio", ATTR{name}=="icm426*-accel", ENV{IIO_SENSOR_PROXY_TYPE}="iio-poll-accel"

aports/device/fp6-device-tweaks/APKBUILD

@@ -0,0 +1,44 @@
+# Device-critical FP6 configuration that no upstream package ships yet —
+# every piece here was once a hand-applied /etc file on the dev phone that a
+# reinstall silently lost:
+#  - masked sleep targets: wifi and BT share the WCN combo chip; idle-suspend
+#    (and BT-off) resets the shared firmware and kills wifi for ~40 minutes
+#  - inv-icm42600-spi module-load: the IMU sits on bitbanged SPI with a
+#    fallback-only DT node, so udev coldplug never autoloads it
+#  - accel poll udev rule: inv_icm42600 exposes scan_elements without a
+#    trigger; iio-sensor-proxy must use its poll backend or auto-rotate is dead
+#  - iio-sensor-proxy restart drop-in: revives it after the known boot-time
+#    libssc crash on unconfigured SSC
+maintainer="Jorijn van der Graaf <jorijnvdgraaf@catcrafts.net>"
+pkgname=fp6-device-tweaks
+pkgver=2
+pkgrel=0
+pkgdesc="Fairphone 6 device-critical system configuration"
+url="https://forgejo.catcrafts.net/Catcrafts/fp6-img"
+arch="noarch"
+license="MIT"
+options="!check"
+source="
+	inv-icm42600.conf
+	81-fp6-accel-poll.rules
+	iio-sensor-proxy-restart.conf
+"
+
+package() {
+	for t in sleep suspend hibernate hybrid-sleep; do
+		mkdir -p "$pkgdir/etc/systemd/system"
+		ln -s /dev/null "$pkgdir/etc/systemd/system/$t.target"
+	done
+	install -Dm644 "$srcdir"/inv-icm42600.conf \
+		"$pkgdir"/etc/modules-load.d/inv-icm42600.conf
+	install -Dm644 "$srcdir"/81-fp6-accel-poll.rules \
+		"$pkgdir"/etc/udev/rules.d/81-fp6-accel-poll.rules
+	install -Dm644 "$srcdir"/iio-sensor-proxy-restart.conf \
+		"$pkgdir"/etc/systemd/system/iio-sensor-proxy.service.d/restart.conf
+}
+
+sha512sums="
+5e60fef47cb09cec7cab73464183dfd9e9cb32cebd1d20a67922c10c5a747eca8d106b66737d06af5c5c162a6baf37ab62a82709cc20911044face100d482919  inv-icm42600.conf
+cc13f6abc4538fef976c59893992dd2c193cd0eac5da37a9fb01ba421b3ba8ff303aa438ec2fe4d10f50165f90be211d4b2c39dc6ef58d0d320fba8182ccf287  81-fp6-accel-poll.rules
+1800ad5c11b4e38c10b0c72b2392a6dc978a4e37bcd964182adb90d7d9aa7afc74acf102e2051dbf864021c05821f683af8943e2729e1eaa195856a0bd635e09  iio-sensor-proxy-restart.conf
+"

aports/device/fp6-device-tweaks/iio-sensor-proxy-restart.conf

@@ -0,0 +1,7 @@
+# Revive after the known boot-time libssc crash (unconfigured SSC);
+# recreated 2026-07-28 - the 2026-07-20 drop-in had gone missing.
+[Unit]
+StartLimitIntervalSec=0
+[Service]
+Restart=on-failure
+RestartSec=5

aports/device/fp6-device-tweaks/inv-icm42600.conf

@@ -0,0 +1 @@
+inv-icm42600-spi

aports/device/fp6-no-suspend/APKBUILD

@@ -1,21 +0,0 @@
-# The FP6's wifi and BT share the WCN combo chip; systemd idle-suspend (and
-# BT-off) resets the shared firmware and kills wifi for ~40 minutes. Mask
-# the sleep targets declaratively - shipped as /dev/null symlinks, the same
-# state 'systemctl mask' produces.
-maintainer="Jorijn van der Graaf <jorijnvdgraaf@catcrafts.net>"
-pkgname=fp6-no-suspend
-pkgver=1
-pkgrel=0
-pkgdesc="Mask systemd sleep targets (suspend kills wifi on the FP6)"
-url="https://forgejo.catcrafts.net/Catcrafts/fp6-img"
-arch="noarch"
-license="MIT"
-options="!check"
-
-package() {
-	for t in sleep suspend hibernate hybrid-sleep; do
-		mkdir -p "$pkgdir/etc/systemd/system"
-		ln -s /dev/null "$pkgdir/etc/systemd/system/$t.target"
-	done
-}
-sha512sums=""

build.sh

@@ -100,7 +100,7 @@ mkdir -p "$WORK/pmaports/temp"
 cp -r aports/device/linux-postmarketos-qcom-milos "$WORK/pmaports/device/testing/"
 cp -r aports/device/soc-fairphone-fp6-audio "$WORK/pmaports/device/"
 cp -r aports/device/callaudioshim "$WORK/pmaports/device/"
-cp -r aports/device/fp6-no-suspend "$WORK/pmaports/device/"
+cp -r aports/device/fp6-device-tweaks "$WORK/pmaports/device/"
 cp -r aports/main/postmarketos-config-nftables "$WORK/pmaports/main/"
 cp -r aports/modem/imsd "$WORK/pmaports/modem/"
 # Alpine forks carrying the GNSS patches (libqmi !470 unreleased; MM !1463
@@ -151,7 +151,7 @@ aports = $WORK/pmaports
 device = fairphone-fp6
 ui = plasma-mobile
 systemd = always
-extra_packages = soc-fairphone-fp6-audio,callaudioshim,imsd,fp6-no-suspend
+extra_packages = soc-fairphone-fp6-audio,callaudioshim,imsd,fp6-device-tweaks
 EOF
 
 pmbootstrap checksum linux-postmarketos-qcom-milos