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

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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
This commit is contained in:
Alper Nebi Yasak 2022-08-18 19:56:13 +03:00
parent fea267f8c7
commit ac3c031e38
1 changed files with 11 additions and 0 deletions
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11
rules.d/60-sensor.rules
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@ -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}'", \