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Commit 54da6d77 authored by Yu Shan's avatar Yu Shan
Browse files

Define a new BACKPORTED vehicle property group. 

This vehicle property group is used for reserving some property IDs
that vendor can optionally implement as a custom property in older
Android released so that we can backport VHAL property features.

Test: m android.hardware.automotive.vehicle.property-update-api
Bug: 300700901
Change-Id: Ic1f4865466acfcabbecf8a70f3cbcfb6440c9fe6
parent 91ac7ec4

automotive/vehicle/aidl_property/aidl_api/android.hardware.automotive.vehicle.property/current/android/hardware/automotive/vehicle/VehiclePropertyGroup.aidl

+1 −0
Original line number Diff line number Diff line
@@ -36,5 +36,6 @@ package android.hardware.automotive.vehicle; 
enum VehiclePropertyGroup {

  SYSTEM = 0x10000000,

  VENDOR = 0x20000000,

  BACKPORTED = 0x30000000,

  MASK = 0xf0000000,

}

automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehiclePropertyGroup.aidl

+29 −0
Original line number Diff line number Diff line
@@ -29,5 +29,34 @@ enum VehiclePropertyGroup { 
     */

    VENDOR = 0x20000000,



    /**

     * Group reserved for backporting system properties introduced in a newer Android

     * release to an older Android release.

     *

     * It is recommended to map the system property ID to a backported property ID by replacing the

     * VehiclePropertyGroup, e.g. backported PERF_VEHICLE_SPEED(0x11600207) would be 0x31600207.

     *

     * When updated to a newer Android release where the property is defined as system properties,

     * the backported properties must be migrated to system properties.

     *

     * In Android system, the backported property is treated the same as a vendor defined property

     * with the same vendor permission model, a.k.a. Default required permission is

     * `android.car.Car.PERMISSION_VENDOR_EXTENSION`, or customized by

     * `SUPPORT_CUSTOMIZE_VENDOR_PERMISSION` VHAL property.

     *

     * Only applications with vendor permissions may access these backported properties.

     *

     * Vendors must also make sure this property's behavior is consistent with what is expected for

     * the backported system property, e.g. the access mode, the change mode and the config array

     * must be correct.

     *

     * When vendors define custom properties, they must use {@code VENDOR} flag, instead of

     * {@code BACKPORTED}

     */

    BACKPORTED = 0x30000000,



    /**

     * The bit mask for {@code VehiclePropertyGroup}. This is not a group by itself.

     */

    MASK = 0xf0000000,

}