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systemd/rules.d/60-sensor.rules

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udev: Add rules for accelerometer orientation quirks This commit adds a rules file to extract the properties from hwdb to set on i2c IIO devices. This is used to set the ACCEL_MOUNT_MATRIX property on IIO devices, to be consumed by iio-sensor-proxy or equivalent daemon. The hwdb file contains documentation on how to write quirks. Note however that mount information is usually exported in: - the device-tree for ARM devices - the ACPI DSDT for Intel-compatible devices but currently not extracted by the kernel. Also note that some devices have the framebuffer rotation that changes between the bootloader and the main system, which might mean that the accelerometer is then wrongly oriented. This is a missing feature in the i915 kernel driver: https://bugs.freedesktop.org/show_bug.cgi?id=94894 which needs to be fixed, and won't require quirks.
2016-12-06 16:16:43 +00:00
# do not edit this file, it will be overwritten on update
ACTION=="remove", GOTO="sensor_end"
udev: hwdb: Match iio sensors based on their label The IIO subsystem exposes a 'label' sysfs file to help userspace better identify its devices [1]. Standardized labels include the sensor type along with its location, including 'accel-base' and 'accel-display'. Most Chrome OS boards have two accelerometers that are indistinguishable except for this label (or a 'location' sysfs file before Linux v6.0), and need different mounting matrix corrections based on their location. Add a udev rule that matches hwdb entries using this label, so we can correct both accelerometers on these devices with hwdb entries. The existing rules and hwdb entries are not modified to keep potential out-of-tree entries working, but new entries in this form will override existing ones. Also add currently standardized labels to parse-hwdb.py. [1] https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-bus-iio
2022-08-18 14:27:22 +00:00
# device matching the sensor's label, name and the machine's DMI data for IIO devices
SUBSYSTEM=="iio", KERNEL=="iio*", SUBSYSTEMS=="usb|i2c|platform", ATTR{label}!="", \
IMPORT{builtin}="hwdb 'sensor:$attr{label}:modalias:$attr{modalias}:$attr{[dmi/id]modalias}'", \
GOTO="sensor_end"
udev: hwdb: Add rules to match cros-ec-accel by 'location' sysfs file The cros-ec-accel devices report their mounting location by the 'label' sysfs file only since Linux v6.0. With earlier kernels, a nonstandard 'location' file reports this, but slightly differently (lid instead of display) [1]. Add udev rules to import the correct hwdb entries based on this 'location' file for cros-ec-accel devices, so that the base-mounted accel matrix has the correct value for older kernels as well. [1] https://kernel.org/doc/Documentation/ABI/testing/sysfs-bus-iio-cros-ec
2022-08-18 16:56:13 +00:00
# Before Linux v6.0, cros-ec-accel used a non-standard 'location' sysfs file
SUBSYSTEM=="iio", KERNEL=="iio*", SUBSYSTEMS=="platform", \
ATTR{name}=="cros-ec-accel|cros-ec-accel-legacy", ATTR{location}=="base", \
IMPORT{builtin}="hwdb 'sensor:accel-base:modalias:$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"
udev: Add rules for accelerometer orientation quirks This commit adds a rules file to extract the properties from hwdb to set on i2c IIO devices. This is used to set the ACCEL_MOUNT_MATRIX property on IIO devices, to be consumed by iio-sensor-proxy or equivalent daemon. The hwdb file contains documentation on how to write quirks. Note however that mount information is usually exported in: - the device-tree for ARM devices - the ACPI DSDT for Intel-compatible devices but currently not extracted by the kernel. Also note that some devices have the framebuffer rotation that changes between the bootloader and the main system, which might mean that the accelerometer is then wrongly oriented. This is a missing feature in the i915 kernel driver: https://bugs.freedesktop.org/show_bug.cgi?id=94894 which needs to be fixed, and won't require quirks.
2016-12-06 16:16:43 +00:00
# device matching the sensor's name and the machine's DMI data for IIO devices
rules: Allow quirks for platform IIO accelerometers Chromebooks have IIO accelerometers with modalias as platform:cros-ec-accel. This commit allows these devices to use systemd orientation quirk.
2019-09-24 21:31:04 +00:00
SUBSYSTEM=="iio", KERNEL=="iio*", SUBSYSTEMS=="usb|i2c|platform", \
udev: Add rules for accelerometer orientation quirks This commit adds a rules file to extract the properties from hwdb to set on i2c IIO devices. This is used to set the ACCEL_MOUNT_MATRIX property on IIO devices, to be consumed by iio-sensor-proxy or equivalent daemon. The hwdb file contains documentation on how to write quirks. Note however that mount information is usually exported in: - the device-tree for ARM devices - the ACPI DSDT for Intel-compatible devices but currently not extracted by the kernel. Also note that some devices have the framebuffer rotation that changes between the bootloader and the main system, which might mean that the accelerometer is then wrongly oriented. This is a missing feature in the i915 kernel driver: https://bugs.freedesktop.org/show_bug.cgi?id=94894 which needs to be fixed, and won't require quirks.
2016-12-06 16:16:43 +00:00
IMPORT{builtin}="hwdb 'sensor:modalias:$attr{modalias}:$attr{[dmi/id]modalias}'", \
GOTO="sensor_end"
udev: Allow quirks for ACPI input accelerometers The existing accelerometer rules only support IIO devices, however iio-sensor-proxy can also work with accelerometers made available through the input (evdev) subsystem. In this case I am working with an accelerometer input device backed by an ACPI driver for which the hierarchy is: - ACCE0001 (ACPI device) -> input8 -> event7 We want the mount matrix (from hwdb) to be applied to both input8 and event7. However, to match in 60-sensor.hwdb, we need to be working with the modalias of the parent device (ACCE0001), and it is tricky to access that when processing the input8 device which has it's own modalias. Instead of working directly with modalias, this ACPI-specific rule uses the "hid" attribute to reconstruct the ACPI modalias. Since input and event devices do not provide a hid attribute we will always get this from the ACPI parent. The modalias is constructed according to the definition in the kernel's Documentation/acpi/namespace.txt and create_pnp_modalias(). We will only use the first _CID/_HID value available, i.e. in some cases we will only reconstruct the first part of the modalias, but that should be enough granularity for our needs.
2017-02-28 17:38:18 +00:00
SUBSYSTEM=="input", ENV{ID_INPUT_ACCELEROMETER}=="1", SUBSYSTEMS=="acpi", \
IMPORT{builtin}="hwdb 'sensor:modalias:acpi:$attr{hid}:$attr{[dmi/id]modalias}'", \
GOTO="sensor_end"
rules: allow quirks for platform input accelerometers
2017-03-03 20:23:39 +00:00
SUBSYSTEM=="input", ENV{ID_INPUT_ACCELEROMETER}=="1", SUBSYSTEMS=="platform", \
IMPORT{builtin}="hwdb 'sensor:modalias:platform:$id:$attr{[dmi/id]modalias}'", \
GOTO="sensor_end"
udev: Add rules for accelerometer orientation quirks This commit adds a rules file to extract the properties from hwdb to set on i2c IIO devices. This is used to set the ACCEL_MOUNT_MATRIX property on IIO devices, to be consumed by iio-sensor-proxy or equivalent daemon. The hwdb file contains documentation on how to write quirks. Note however that mount information is usually exported in: - the device-tree for ARM devices - the ACPI DSDT for Intel-compatible devices but currently not extracted by the kernel. Also note that some devices have the framebuffer rotation that changes between the bootloader and the main system, which might mean that the accelerometer is then wrongly oriented. This is a missing feature in the i915 kernel driver: https://bugs.freedesktop.org/show_bug.cgi?id=94894 which needs to be fixed, and won't require quirks.
2016-12-06 16:16:43 +00:00
LABEL="sensor_end"
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