From: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Date: Thu, 18 Aug 2022 16:56:13 +0000 (+0300)
Subject: udev: hwdb: Add rules to match cros-ec-accel by 'location' sysfs file
X-Git-Tag: v252-rc1~415^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F24353%2Fhead;p=thirdparty%2Fsystemd.git

udev: hwdb: Add rules to match cros-ec-accel by 'location' sysfs file

The cros-ec-accel devices report their mounting location by the 'label'
sysfs file only since Linux v6.0. With earlier kernels, a nonstandard
'location' file reports this, but slightly differently (lid instead of
display) [1].

Add udev rules to import the correct hwdb entries based on this
'location' file for cros-ec-accel devices, so that the base-mounted
accel matrix has the correct value for older kernels as well.

[1] https://kernel.org/doc/Documentation/ABI/testing/sysfs-bus-iio-cros-ec
---

diff --git a/rules.d/60-sensor.rules b/rules.d/60-sensor.rules
index 99b8f5fc7ae..09180b4b2cc 100644
--- a/rules.d/60-sensor.rules
+++ b/rules.d/60-sensor.rules
@@ -7,6 +7,17 @@ SUBSYSTEM=="iio", KERNEL=="iio*", SUBSYSTEMS=="usb|i2c|platform", ATTR{label}!="
   IMPORT{builtin}="hwdb 'sensor:$attr{label}:modalias:$attr{modalias}:$attr{[dmi/id]modalias}'", \
   GOTO="sensor_end"
 
+# Before Linux v6.0, cros-ec-accel used a non-standard 'location' sysfs file
+SUBSYSTEM=="iio", KERNEL=="iio*", SUBSYSTEMS=="platform", \
+  ATTR{name}=="cros-ec-accel|cros-ec-accel-legacy", ATTR{location}=="base", \
+  IMPORT{builtin}="hwdb 'sensor:accel-base:modalias:$attr{modalias}:$attr{[dmi/id]modalias}'", \
+  GOTO="sensor_end"
+
+SUBSYSTEM=="iio", KERNEL=="iio*", SUBSYSTEMS=="platform", \
+  ATTR{name}=="cros-ec-accel|cros-ec-accel-legacy", ATTR{location}=="lid", \
+  IMPORT{builtin}="hwdb 'sensor:accel-display:modalias:$attr{modalias}:$attr{[dmi/id]modalias}'", \
+  GOTO="sensor_end"
+
 # device matching the sensor's name and the machine's DMI data for IIO devices
 SUBSYSTEM=="iio", KERNEL=="iio*", SUBSYSTEMS=="usb|i2c|platform", \
   IMPORT{builtin}="hwdb 'sensor:modalias:$attr{modalias}:$attr{[dmi/id]modalias}'", \