device-xiaomi-pyxis: Enable ADSP (sensors)

Mostly workarounds for OpenRC, works as-is with systemd.

Signed-off-by: Alicja Michalska <ellyqw@mainlining.org>
Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/8021>

device/testing/device-xiaomi-pyxis/APKBUILD

@@ -2,7 +2,7 @@
 maintainer="Alicja Michalska <ellyqw@mainlining.org>"
 pkgname=device-xiaomi-pyxis
 pkgdesc="Xiaomi Mi 9 Lite"
-pkgver=3
+pkgver=4
 pkgrel=0
 url="https://postmarketos.org"
 license="MIT"
@@ -27,12 +27,18 @@ depends="
 	unl0kr-fbforcerefresh
 "
 makedepends="devicepkg-dev"
+install="$pkgname-openrc.post-install"
 source="
 	81-libssc-xiaomi-pyxis.rules
 	deviceinfo
 	hexagonrpcd.confd
 	kernel-cmdline.conf
 	modules-initfs
+	no-hexagonrpcd-on-suspend.sh
+"
+
+subpackages="
+	$pkgname-openrc
 "
 
 build() {
@@ -40,6 +46,7 @@ build() {
 }
 
 package() {
+	replaces="$pkgname-nonfree-firmware"
 	devicepkg_package $startdir $pkgname
 
 	# Sensors depend on ADSP firmware and the sensors registry served over FastRPC.
@@ -49,10 +56,20 @@ package() {
 		"$pkgdir"/usr/lib/udev/rules.d/81-libssc-xiaomi-pyxis.rules
 }
 
+openrc() {
+	install_if="$pkgname=$pkgver-r$pkgrel openrc"
+	depends="hexagonrpcd-openrc openrc"
+
+	# The FastRPC service is only enabled when non-free firmware is installed.
+	install -Dm755 "$srcdir"/no-hexagonrpcd-on-suspend.sh \
+		-t "$subpkgdir"/usr/libexec/elogind/system-sleep
+}
+
 sha512sums="
 41676f77528046ed5eb87b11daea228a9280d3f54e1cdb6e4f645b77fa51cdbffb3355cff289804763dd102bb4a4fff8052d1c4391b44ad55031c83cff3e00af  81-libssc-xiaomi-pyxis.rules
 c774ea9c547f0dd6bdc577be116b0a575531dd5fc61ebb03fef58e0698dfbd9ffacb546e89b3c4a4b159a7f1e98e340ed3b74fb14807c5e55418d198b91632d7  deviceinfo
 7b9cae334ac9f7467002ee43f3ffef7c174e28683082fdf71e292d3ecd23e341d6b65dcbe9084da28eaf2fab00b45cf1e1bdf836afce39908c697f47f60a2dd8  hexagonrpcd.confd
 a9879d2e6c109c7b9ba9263703e88bd6664a63c340d25fa16fda465df5a57b819d0e7182ea505d6d0c8d831dda658d65040f9b9b079dc1afe0127b9dd4abb7e0  kernel-cmdline.conf
 06dfc9f41ab196406300acddd411c95f8ba47f49be01a291b4a33767d56b88a16741306223ec767930b71ab08aab82a29f0dacbde2bb45c32de1728b6cb35b14  modules-initfs
+2972005a9cf6ca57061965075593dddfa8ee479bc6c21cd41851b1a14768cb1cddbd31a17975ae17adc36d40d294ccbc6bf83defbd69fc7b363f638d8564fbbc  no-hexagonrpcd-on-suspend.sh
 "

device/testing/device-xiaomi-pyxis/device-xiaomi-pyxis-openrc.post-install

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+rc-update add hexagonrpcd-adsp-sensorspd

device/testing/device-xiaomi-pyxis/no-hexagonrpcd-on-suspend.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+if [ "$1" = "pre" ]
+then
+	# If HexagonRPCD listens for a remote method call while the device is
+	# waking up, the DSP may crash. Assume that HexagonRPCD has fulfilled
+	# all incoming remote method invocations, and stop it.
+	rc-service hexagonrpcd-adsp-sensorspd stop
+fi