=======================
Sensor drivers and HAL
=======================

The touch/fingerprint/sensor slice of the vendor driver/HAL layer — split out
from the general HAL catalogue (:doc:`/userspace/drivers-hals`) because it
belongs next to the sensor-hardware pages in this section
(:doc:`touchscreen`, :doc:`misc`).

One structural fact up front: **none of the Onyx-specific input drivers are
modules**. The Parade/Wacom/fingerprint drivers are all built into the
kernel (``=y``); there is no Onyx entry for them in the VINTF manifest. Every
loadable module on the device is a stock Qualcomm/upstream one — see
:doc:`/userspace/drivers-hals` for the module list.

Everything here is from ``vendor_a.img`` (``bin/hw/``, ``lib64/hw/``,
``etc/vintf/manifest.xml``) read with ``7z``, cross-checked against
``kernel_config.txt``. No code was executed.

HAL services and implementations
=================================

.. list-table::
   :header-rows: 1
   :widths: 26 40 34

   * - HAL
     - Implementation
     - Hardware / cross-ref
   * - ``sensors@2.0-service.multihal`` + ``sensorscalibrate``
     - multihal
     - sensors on the ADSP/SLPI island (hall, accel, ALS …) —
       :doc:`/audio/dsp-firmware`, :doc:`misc`
   * - ``biometrics.fingerprint@2.1-service`` +
       ``vendor.fptool.fingerprint@2.0-service``
     - ``chipsailing.fingerprint``, ``fsfingerprint``, ``libmicroarray``
     - the three fingerprint-vendor impls matching the three firmware sets
       (:doc:`/userspace/firmware-blobs`); detail in :doc:`/userspace/security`

Provenance
==========

:Source: ``artifacts/super/vendor_a.img`` — ``bin/hw/*`` and ``lib64/hw/*``
   (HAL service and implementation libraries), ``etc/vintf/manifest.xml``
   (HAL declaration); ``artifacts/boot_a/kernel_config.txt`` (built-in vs.
   modular).
:Method: ext4 image listed/extracted read-only with ``7z``; HAL from
   ``bin/hw`` / ``lib64/hw`` names and the VINTF manifest. No code executed.
:Cross-refs: :doc:`touchscreen`, :doc:`misc` (the DT-bound driver detail
   behind these HALs), :doc:`/userspace/security` (fingerprint TA/secure-world
   detail), :doc:`/userspace/firmware-blobs` (fingerprint firmware sets),
   :doc:`/userspace/drivers-hals` (the rest of the HAL/module catalogue).