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Input Device Abstraction

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Created by Jerry, Zhao Jiancong, last modified on Sept 02, 2021

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Preliminary Research with IVI PR: https://gerrit.automotivelinux.org/gerrit/gitweb?p=staging/toyota.git;a=blob;f=hal_api/input_hal.h;h=bfc9d5923f1c17da17b0684913df3ae3339de27c;hb=96bd8be3dbf0c36c211f7dafeb61a1eba7f30ee7
- API list:
  - InitInput
  - DeInitInput
  - InitTouch
  - StartTouch
  - SelfTestTouch
  - LockTouch
  - SuspendTouch
  - SetSensitivityLevelTouch (not possible w/ evdev subsystem and virito-input linux driver)
  - GetSensitivityLevelTouch (not possible w/ evdev subsystem and virtio-input linux driver)
  - NotifyRadioScanFreqTouch
  - GetPanelSpecResolutionInput
- Pending Questions:
  - Are there any touchscreen HW already on the market supportting features of Input HAL (e.g. setting touch sensitivity)?
    - Needed to figure out details when adapting virtio-input Linux driver and evdev subsystem the to Input HAL requirements

- - Are there any other important features, besides setting sensitivity, that the HAL will be supporting in the future?
    - Anticipate changes in the HAL that will influence evdev subsystem and virtio input

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