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
ipxe · Aug 18, 2022 · ac3c031 · ac3c031
1 parent fea267f
commit ac3c031
Showing 1 changed file with 11 additions and 0 deletions.
diff --git 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}'", \