From 796fbdee57b57ce030e735ae02aba706e26bed6f Mon Sep 17 00:00:00 2001
From: Martin Juecker <martin.juecker@gmail.com>
Date: Thu, 25 Sep 2025 22:38:07 +0200
Subject: [PATCH] device-samsung-p4note: adjust sensor mount matrix for
 iio-sensor-proxy

There is currently two different ways to handle sensors, the Linux way
which is taking earth as a starting point and then drawing a vector
through the device, as well as the Windows way which takes the device as
a starting point and drawing a vector towards earth. iio-sensor-proxy
decided to go the Windows way, therefor the configuration needs to be
flipped for the readings to produce the expected result.

I created an issue with iio-sensor-proxy that goes into a bit more
details, see #375.

Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/7085>
---
 device/testing/device-samsung-p4note/90-sensors.hwdb | 3 +++
 device/testing/device-samsung-p4note/APKBUILD        | 8 ++++++--
 2 files changed, 9 insertions(+), 2 deletions(-)
 create mode 100644 device/testing/device-samsung-p4note/90-sensors.hwdb

diff --git a/device/testing/device-samsung-p4note/90-sensors.hwdb b/device/testing/device-samsung-p4note/90-sensors.hwdb
new file mode 100644
index 000000000..8ff2979c8
--- /dev/null
+++ b/device/testing/device-samsung-p4note/90-sensors.hwdb
@@ -0,0 +1,3 @@
+# this fixes the Windows style handling of sensors in iio-sensor-proxy, see issue #375
+sensor:modalias:of:*lsm330*:*
+  ACCEL_MOUNT_MATRIX=-1, 0, 0; 0, 1, 0; 0, 0, 1
\ No newline at end of file
diff --git a/device/testing/device-samsung-p4note/APKBUILD b/device/testing/device-samsung-p4note/APKBUILD
index 64fdb00c3..8fdd39be8 100644
--- a/device/testing/device-samsung-p4note/APKBUILD
+++ b/device/testing/device-samsung-p4note/APKBUILD
@@ -1,7 +1,7 @@
 # Reference: <https://postmarketos.org/devicepkg>
 pkgname=device-samsung-p4note
 pkgdesc="Samsung Galaxy Note 10.1"
-pkgver=4
+pkgver=5
 pkgrel=0
 url="https://postmarketos.org"
 license="MIT"
@@ -18,7 +18,8 @@ subpackages="$pkgname-nonfree-firmware:nonfree_firmware"
 source="
 	deviceinfo
 	audio/HiFi.conf
-	audio/p4note.conf"
+	audio/p4note.conf
+	90-sensors.hwdb"
 
 build() {
 	devicepkg_build $startdir $pkgname
@@ -31,6 +32,8 @@ package() {
 		-t "$pkgdir"/usr/share/alsa/ucm2/conf.d/p4note
 	install -Dm644 "$srcdir"/p4note.conf \
 		-t "$pkgdir"/usr/share/alsa/ucm2/conf.d/p4note
+	install -Dm644 "$srcdir"/90-sensors.hwdb \
+		-t "$pkgdir"/etc/udev/hwdb.d
 }
 
 nonfree_firmware() {
@@ -47,4 +50,5 @@ sha512sums="
 b51570c46435560265eea91adc41456ec29275d3f28c88c5d85ae59a066568e864b926f29cf7a852daf27ec79eb792fb2bbd87a2ddbf1ef2f84c6b282361c0df  deviceinfo
 40c2d13a8e59749a646e4070a444098609f62679f19a975da3f53b1a0fc4ac4c417dd86ec271a339e6a19c1737b384b759661d8f9a167c7eedc4a3ffbaffd77f  HiFi.conf
 2c5011f7d5f25362e6249624796a6d9d36d858169538ab9c4ab1a79f37ece95f425a92b14849a65fd9281c5567753158871c6bf20a772f8dca6b2d6813ea2f03  p4note.conf
+af1dfc74ebec2f848d784c961c1b19eb1134aa62a0fd741903043466cfdec98d2c35c5b95738f63fcbdac6937e0b39be188b584b1f8cd45d98d295f32f2c882a  90-sensors.hwdb
 "