Migrate IUsb to AIDL
This change migrates android.hardware.usb.IUsb to AIDL and
adds the default implementation.
Compared to the HIDL interface, AIDL based interface adds
transactionId argument to each of the interface method which
is used while invoking the corresponding callback.
Bug: 200993386
Bug: 199357330
Test: Ran new hal implementation on Pixel. Yet to run VTS.
Change-Id: Id8aa40682d4c4b435c63b3ae249b176276dbb31d
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index 74d93b3..3a5f5ef 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -702,6 +702,13 @@
<instance>default</instance>
</interface>
</hal>
+ <hal format="aidl" optional="true">
+ <name>android.hardware.usb</name>
+ <interface>
+ <name>IUsb</name>
+ <instance>default</instance>
+ </interface>
+ </hal>
<hal format="hidl" optional="true">
<name>android.hardware.usb.gadget</name>
<version>1.0-2</version>
diff --git a/usb/aidl/Android.bp b/usb/aidl/Android.bp
new file mode 100644
index 0000000..d1e9e68
--- /dev/null
+++ b/usb/aidl/Android.bp
@@ -0,0 +1,33 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+aidl_interface {
+ name: "android.hardware.usb",
+ vendor_available: true,
+ srcs: ["android/hardware/usb/*.aidl"],
+ stability: "vintf",
+ backend: {
+ cpp: {
+ enabled: false,
+ },
+ java: {
+ sdk_version: "module_current",
+ },
+ ndk: {
+ vndk: {
+ enabled: true,
+ },
+ },
+ },
+}
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/ContaminantDetectionStatus.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/ContaminantDetectionStatus.aidl
new file mode 100644
index 0000000..24c6966
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/ContaminantDetectionStatus.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE. //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+// the interface (from the latest frozen version), the build system will
+// prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@VintfStability
+enum ContaminantDetectionStatus {
+ NOT_SUPPORTED = 0,
+ DISABLED = 1,
+ NOT_DETECTED = 2,
+ DETECTED = 3,
+}
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/ContaminantProtectionMode.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/ContaminantProtectionMode.aidl
new file mode 100644
index 0000000..9979869
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/ContaminantProtectionMode.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE. //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+// the interface (from the latest frozen version), the build system will
+// prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@VintfStability
+enum ContaminantProtectionMode {
+ NONE = 0,
+ FORCE_SINK = 1,
+ FORCE_SOURCE = 2,
+ FORCE_DISABLE = 3,
+}
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/ContaminantProtectionStatus.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/ContaminantProtectionStatus.aidl
new file mode 100644
index 0000000..9642261
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/ContaminantProtectionStatus.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE. //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+// the interface (from the latest frozen version), the build system will
+// prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@VintfStability
+enum ContaminantProtectionStatus {
+ NONE = 0,
+ FORCE_SINK = 1,
+ FORCE_SOURCE = 2,
+ FORCE_DISABLE = 3,
+ DISABLED = 4,
+}
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/IUsb.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/IUsb.aidl
new file mode 100644
index 0000000..7513461
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/IUsb.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE. //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+// the interface (from the latest frozen version), the build system will
+// prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@VintfStability
+interface IUsb {
+ oneway void enableContaminantPresenceDetection(in String portName, in boolean enable, long transactionId);
+ oneway void enableUsbData(in String portName, boolean enable, long transactionId);
+ oneway void queryPortStatus(long transactionId);
+ oneway void setCallback(in android.hardware.usb.IUsbCallback callback);
+ oneway void switchRole(in String portName, in android.hardware.usb.PortRole role, long transactionId);
+}
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/IUsbCallback.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/IUsbCallback.aidl
new file mode 100644
index 0000000..57be590
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/IUsbCallback.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE. //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+// the interface (from the latest frozen version), the build system will
+// prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@VintfStability
+interface IUsbCallback {
+ oneway void notifyPortStatusChange(in android.hardware.usb.PortStatus[] currentPortStatus, in android.hardware.usb.Status retval);
+ oneway void notifyRoleSwitchStatus(in String portName, in android.hardware.usb.PortRole newRole, in android.hardware.usb.Status retval, long transactionId);
+ oneway void notifyEnableUsbDataStatus(in String portName, boolean enable, in android.hardware.usb.Status retval, long transactionId);
+ oneway void notifyContaminantEnabledStatus(in String portName, boolean enable, in android.hardware.usb.Status retval, long transactionId);
+ oneway void notifyQueryPortStatus(in String portName, in android.hardware.usb.Status retval, long transactionId);
+}
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortDataRole.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortDataRole.aidl
new file mode 100644
index 0000000..105b316
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortDataRole.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE. //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+// the interface (from the latest frozen version), the build system will
+// prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@VintfStability
+enum PortDataRole {
+ NONE = 0,
+ HOST = 1,
+ DEVICE = 2,
+}
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortMode.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortMode.aidl
new file mode 100644
index 0000000..34e4334
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortMode.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE. //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+// the interface (from the latest frozen version), the build system will
+// prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@VintfStability
+enum PortMode {
+ NONE = 0,
+ UFP = 1,
+ DFP = 2,
+ DRP = 3,
+ AUDIO_ACCESSORY = 4,
+ DEBUG_ACCESSORY = 5,
+}
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortPowerRole.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortPowerRole.aidl
new file mode 100644
index 0000000..0e6f3fb
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortPowerRole.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE. //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+// the interface (from the latest frozen version), the build system will
+// prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@VintfStability
+enum PortPowerRole {
+ NONE = 0,
+ SOURCE = 1,
+ SINK = 2,
+}
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortRole.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortRole.aidl
new file mode 100644
index 0000000..c66aecc
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortRole.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE. //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+// the interface (from the latest frozen version), the build system will
+// prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@VintfStability
+union PortRole {
+ android.hardware.usb.PortPowerRole powerRole = android.hardware.usb.PortPowerRole.NONE;
+ android.hardware.usb.PortDataRole dataRole;
+ android.hardware.usb.PortMode mode;
+}
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortStatus.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortStatus.aidl
new file mode 100644
index 0000000..78dcfac
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/PortStatus.aidl
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE. //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+// the interface (from the latest frozen version), the build system will
+// prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@VintfStability
+parcelable PortStatus {
+ String portName;
+ android.hardware.usb.PortDataRole currentDataRole = android.hardware.usb.PortDataRole.NONE;
+ android.hardware.usb.PortPowerRole currentPowerRole = android.hardware.usb.PortPowerRole.NONE;
+ android.hardware.usb.PortMode currentMode = android.hardware.usb.PortMode.NONE;
+ boolean canChangeMode;
+ boolean canChangeDataRole;
+ boolean canChangePowerRole;
+ android.hardware.usb.PortMode[] supportedModes;
+ android.hardware.usb.ContaminantProtectionMode[] supportedContaminantProtectionModes;
+ boolean supportsEnableContaminantPresenceProtection;
+ android.hardware.usb.ContaminantProtectionStatus contaminantProtectionStatus = android.hardware.usb.ContaminantProtectionStatus.NONE;
+ boolean supportsEnableContaminantPresenceDetection;
+ android.hardware.usb.ContaminantDetectionStatus contaminantDetectionStatus = android.hardware.usb.ContaminantDetectionStatus.NOT_SUPPORTED;
+ boolean usbDataEnabled;
+}
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/Status.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/Status.aidl
new file mode 100644
index 0000000..f28fc2a
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/Status.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE. //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+// the interface (from the latest frozen version), the build system will
+// prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@Backing(type="int") @VintfStability
+enum Status {
+ SUCCESS = 0,
+ ERROR = 1,
+ INVALID_ARGUMENT = 2,
+ UNRECOGNIZED_ROLE = 3,
+ NOT_SUPPORTED = 4,
+}
diff --git a/usb/aidl/android/hardware/usb/ContaminantDetectionStatus.aidl b/usb/aidl/android/hardware/usb/ContaminantDetectionStatus.aidl
new file mode 100644
index 0000000..d9bc576
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/ContaminantDetectionStatus.aidl
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb;
+
+@VintfStability
+enum ContaminantDetectionStatus {
+ /**
+ * Contaminant presence detection is not supported.
+ */
+ NOT_SUPPORTED = 0,
+ /**
+ * Contaminant presence detection is supported but disabled.
+ */
+ DISABLED = 1,
+ /**
+ * Contaminant presence detection is enabled and contaminant not detected.
+ */
+ NOT_DETECTED = 2,
+ /**
+ * Contaminant presence detection is enabled and contaminant detected.
+ */
+ DETECTED = 3,
+}
diff --git a/usb/aidl/android/hardware/usb/ContaminantProtectionMode.aidl b/usb/aidl/android/hardware/usb/ContaminantProtectionMode.aidl
new file mode 100644
index 0000000..47c073d
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/ContaminantProtectionMode.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb;
+
+@VintfStability
+enum ContaminantProtectionMode {
+ /**
+ * No action performed upon detection of contaminant presence.
+ */
+ NONE = 0,
+ /**
+ * Upon detection of contaminant presence, Port is forced to sink only
+ * mode where a port shall only detect chargers until contaminant presence
+ * is no longer detected.
+ */
+ FORCE_SINK = 1,
+ /**
+ * Upon detection of contaminant presence, Port is forced to source only
+ * mode where a port shall only detect usb accessories such as headsets
+ * until contaminant presence is no longer detected.
+ */
+ FORCE_SOURCE = 2,
+ /**
+ * Upon detection of contaminant presence, port is disabled until contaminant
+ * presence is no longer detected. In the disabled state port will
+ * not respond to connection of chargers or usb accessories.
+ */
+ FORCE_DISABLE = 3,
+}
diff --git a/usb/aidl/android/hardware/usb/ContaminantProtectionStatus.aidl b/usb/aidl/android/hardware/usb/ContaminantProtectionStatus.aidl
new file mode 100644
index 0000000..c4fa979
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/ContaminantProtectionStatus.aidl
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb;
+
+import android.hardware.usb.ContaminantProtectionMode;
+
+@VintfStability
+enum ContaminantProtectionStatus {
+ /**
+ * No action performed upon detection of contaminant presence.
+ */
+ NONE = 0,
+ /**
+ * Upon detection of contaminant presence, Port is forced to sink only
+ * mode where a port shall only detect chargers until contaminant presence
+ * is no longer detected.
+ */
+ FORCE_SINK = 1,
+ /**
+ * Upon detection of contaminant presence, Port is forced to source only
+ * mode where a port shall only detect usb accessories such as headsets
+ * until contaminant presence is no longer detected.
+ */
+ FORCE_SOURCE = 2,
+ /**
+ * Upon detection of contaminant presence, port is disabled until contaminant
+ * presence is no longer detected. In the disabled state port will
+ * not respond to connection of chargers or usb accessories.
+ */
+ FORCE_DISABLE = 3,
+ /**
+ * Client disabled cotaminant protection by calling
+ * enableContaminantPresencePortProtection set to false. Low level drivers should
+ * not autmomously take any corrective action when contaminant presence is detected.
+ */
+ DISABLED = 4,
+}
diff --git a/usb/aidl/android/hardware/usb/IUsb.aidl b/usb/aidl/android/hardware/usb/IUsb.aidl
new file mode 100644
index 0000000..9a8f000
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/IUsb.aidl
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb;
+
+import android.hardware.usb.IUsbCallback;
+import android.hardware.usb.PortRole;
+
+@VintfStability
+oneway interface IUsb {
+ /**
+ * When supportsEnableContaminantPresenceDetection is true,
+ * enableContaminantPresenceDetection enables/disables contaminant
+ * presence detection algorithm. Calling enableContaminantPresenceDetection
+ * when supportsEnableContaminantPresenceDetection is false does
+ * not have any effect.
+ * Change in contantaminant presence status should be notified to the
+ * client via notifyPortStatusChange through PortStatus.
+ *
+ * @param portName name of the port.
+ * @param enable true Enable contaminant presence detection algorithm.
+ * false Disable contaminant presence detection algorithm.
+ * @param transactionId ID to be used when invoking the callback.
+ */
+ void enableContaminantPresenceDetection(in String portName, in boolean enable, long transactionId);
+
+ /**
+ * This function is used to enable/disable USB data controller.
+ *
+ * @param portName Name of the port.
+ * @param enable true Enable USB data signaling.
+ * false Disable USB data signaling.
+ * @param transactionId ID to be used when invoking the callback.
+ *
+ */
+ void enableUsbData(in String portName, boolean enable, long transactionId);
+
+ /**
+ * This functions is used to request the hal for the current status
+ * status of the Type-C ports. The result of the query would be sent
+ * through the IUsbCallback object's notifyRoleSwitchStatus
+ * to the caller. This api would would let the caller know of the number
+ * of type-c ports that are present and their connection status through the
+ * PortStatus type.
+ * @param transactionId ID to be used when invoking the callback.
+ */
+ void queryPortStatus(long transactionId);
+
+ /**
+ * This function is used to register a callback function which is
+ * called by the HAL to inform the client of port status updates and
+ * result of the requested operation. Please refer IUsbCallback for
+ * complete description of when each of the IUsbCallback's interface
+ * methods is expected to be called.
+ *
+ * @param callback IUsbCallback object used to convey status to the
+ * userspace.
+ */
+ void setCallback(in IUsbCallback callback);
+
+ /**
+ * This function is used to change the port role of a specific port.
+ * For example, when DR_SWAP or PR_SWAP is supported.
+ * The status of the role switch will be informed through IUsbCallback
+ * object's notifyPortStatusChange method.
+ *
+ * @param portName name of the port for which the role has to be changed
+ * @param role the new port role.
+ * @param transactionId ID to be used when invoking the callback.
+ */
+ void switchRole(in String portName, in PortRole role, long transactionId);
+}
diff --git a/usb/aidl/android/hardware/usb/IUsbCallback.aidl b/usb/aidl/android/hardware/usb/IUsbCallback.aidl
new file mode 100644
index 0000000..232a15b
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/IUsbCallback.aidl
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.usb;
+
+import android.hardware.usb.PortRole;
+import android.hardware.usb.PortStatus;
+import android.hardware.usb.Status;
+
+/**
+ * Callback object used for all the IUsb async methods which expects a result.
+ * Caller is expected to register the callback object using setCallback method
+ * to receive updates on the PortStatus.
+ */
+@VintfStability
+oneway interface IUsbCallback {
+ /**
+ * Used to convey the current port status to the caller.
+ * Must be called either when PortState changes due to the port partner or
+ * when caller requested for the PortStatus update through queryPortStatus.
+ *
+ * @param currentPortStatus describes the status of all the USB ports in the
+ * device.
+ * @param retval SUCCESS when the required information was enquired form
+ * kernel and the PortStatus object was built.
+ * ERROR otherwise.
+ */
+ void notifyPortStatusChange(in PortStatus[] currentPortStatus, in Status retval);
+
+ /**
+ * Used to notify the result of the switchRole call to the caller.
+ *
+ * @param portName name of the port for which the roleswap is requested.
+ * @param newRole the new role requested by the caller.
+ * @param retval SUCCESS if the role switch succeeded. FAILURE otherwise.
+ * @param transactionId transactionId sent during switchRole request.
+ */
+ void notifyRoleSwitchStatus(in String portName, in PortRole newRole, in Status retval,
+ long transactionId);
+
+ /**
+ * Used to notify the result of notifyEnableUsbDataStatus call to the caller.
+ *
+ * @param portName name of the port for which the enableUsbData is requested.
+ * @param enable true when usb data is enabled.
+ * false when usb data is disabled.
+ * @param retval SUCCESS if current request succeeded. FAILURE otherwise.
+ * @param transactionId transactionId sent during enableUsbData request.
+ */
+ void notifyEnableUsbDataStatus(in String portName, boolean enable, in Status retval,
+ long transactionId);
+
+ /**
+ * Used to notify the result of enableContaminantPresenceDetection.
+ *
+ * @param portName name of the port for which contaminant detection is enabled/disabled.
+ * @param enable true when contaminant detection is enabled.
+ * false when disabled.
+ * @param retval SUCCESS if the request for enabling/disabling contamiant detection succeeds.
+ * FAILURE otherwise.
+ * @param transactionId transactionId sent during queryPortStatus request
+ */
+ void notifyContaminantEnabledStatus(in String portName, boolean enable, in Status retval,
+ long transactionId);
+
+ /**
+ * Used to notify the request to query port status.
+ *
+ * @param portName name of the port for which port status is queried.
+ * @param retval SUCCESS if the port query succeeded. FAILURE otherwise.
+ * @param transactionId transactionId sent during queryPortStatus request
+ */
+ void notifyQueryPortStatus(in String portName, in Status retval, long transactionId);
+}
diff --git a/usb/aidl/android/hardware/usb/PortDataRole.aidl b/usb/aidl/android/hardware/usb/PortDataRole.aidl
new file mode 100644
index 0000000..a69f977
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/PortDataRole.aidl
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb;
+
+@VintfStability
+enum PortDataRole {
+ /**
+ * Indicates that the port does not have a data role.
+ * In case of DRP, the current data role of the port is only resolved
+ * when the type-c handshake happens.
+ */
+ NONE = 0,
+ /**
+ * Indicates that the port is acting as a host for data.
+ */
+ HOST = 1,
+ /**
+ * Indicated that the port is acting as a device for data.
+ */
+ DEVICE = 2,
+}
diff --git a/usb/aidl/android/hardware/usb/PortMode.aidl b/usb/aidl/android/hardware/usb/PortMode.aidl
new file mode 100644
index 0000000..399f0eb
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/PortMode.aidl
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb;
+
+import android.hardware.usb.PortMode;
+
+@VintfStability
+enum PortMode {
+ /**
+ * Indicates that the port does not have a mode.
+ * In case of DRP, the current mode of the port is only resolved
+ * when the type-c handshake happens.
+ */
+ NONE = 0,
+ /**
+ * Indicates that port can only act as device for data and sink for power.
+ */
+ UFP = 1,
+ /**
+ * Indicates the port can only act as host for data and source for power.
+ */
+ DFP = 2,
+ /**
+ * Indicates can either act as UFP or DFP at a given point of time.
+ */
+ DRP = 3,
+ /*
+ * Indicates that the port supports Audio Accessory mode.
+ */
+ AUDIO_ACCESSORY = 4,
+ /*
+ * Indicates that the port supports Debug Accessory mode.
+ */
+ DEBUG_ACCESSORY = 5,
+}
diff --git a/usb/aidl/android/hardware/usb/PortPowerRole.aidl b/usb/aidl/android/hardware/usb/PortPowerRole.aidl
new file mode 100644
index 0000000..ae3dc47
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/PortPowerRole.aidl
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb;
+
+@VintfStability
+enum PortPowerRole {
+ /**
+ * Indicates that the port does not have a power role.
+ * In case of DRP, the current power role of the port is only resolved
+ * when the type-c handshake happens.
+ */
+ NONE = 0,
+ /**
+ * Indicates that the port is supplying power to the other port.
+ */
+ SOURCE = 1,
+ /**
+ * Indicates that the port is sinking power from the other port.
+ */
+ SINK = 2,
+}
diff --git a/usb/aidl/android/hardware/usb/PortRole.aidl b/usb/aidl/android/hardware/usb/PortRole.aidl
new file mode 100644
index 0000000..e0429c8
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/PortRole.aidl
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb;
+
+import android.hardware.usb.PortDataRole;
+import android.hardware.usb.PortMode;
+import android.hardware.usb.PortPowerRole;
+
+/**
+ * Used as a container to send port role information.
+ */
+@VintfStability
+union PortRole {
+ PortPowerRole powerRole = PortPowerRole.NONE;
+ PortDataRole dataRole;
+ PortMode mode;
+}
diff --git a/usb/aidl/android/hardware/usb/PortStatus.aidl b/usb/aidl/android/hardware/usb/PortStatus.aidl
new file mode 100644
index 0000000..8afe009
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/PortStatus.aidl
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb;
+
+import android.hardware.usb.ContaminantDetectionStatus;
+import android.hardware.usb.ContaminantProtectionMode;
+import android.hardware.usb.ContaminantProtectionStatus;
+import android.hardware.usb.PortDataRole;
+import android.hardware.usb.PortMode;
+import android.hardware.usb.PortPowerRole;
+
+@VintfStability
+parcelable PortStatus {
+ /**
+ * Name of the port.
+ * Used as the port's id by the caller.
+ */
+ String portName;
+ /**
+ * Data role of the port.
+ */
+ PortDataRole currentDataRole = PortDataRole.NONE;
+ /**
+ * Power Role of thte port.
+ */
+ PortPowerRole currentPowerRole = PortPowerRole.NONE;
+ /**
+ * Mode in which the port is connected.
+ * Can be UFP or DFP or AUDIO_ACCESSORY or
+ * DEBUG_ACCESSORY.
+ */
+ PortMode currentMode = PortMode.NONE;
+ /**
+ * True indicates that the port's mode can
+ * be changed. False otherwise.
+ */
+ boolean canChangeMode;
+ /**
+ * True indicates that the port's data role
+ * can be changed. False otherwise.
+ * For example, true if Type-C PD PD_SWAP
+ * is supported.
+ */
+ boolean canChangeDataRole;
+ /**
+ * True indicates that the port's power role
+ * can be changed. False otherwise.
+ * For example, true if Type-C PD PR_SWAP
+ * is supported.
+ */
+ boolean canChangePowerRole;
+ /**
+ * Identifies the type of the local port.
+ *
+ * UFP - Indicates that port can only act as device for
+ * data and sink for power.
+ * DFP - Indicates the port can only act as host for data
+ * and source for power.
+ * DRP - Indicates can either act as UFP or DFP at a
+ * given point of time.
+ * AUDIO_ACCESSORY - Indicates that the port supports
+ * Audio Accessory mode.
+ * DEBUG_ACCESSORY - Indicates that the port supports
+ * Debug Accessory mode.
+ */
+ PortMode[] supportedModes;
+ /**
+ * Contaminant presence protection modes supported by the port.
+ */
+ ContaminantProtectionMode[] supportedContaminantProtectionModes;
+ /**
+ * Client can enable/disable contaminant presence protection through
+ * enableContaminantPresenceProtection when true.
+ */
+ boolean supportsEnableContaminantPresenceProtection;
+ /**
+ * Contaminant presence protection modes currently active for the port.
+ */
+ ContaminantProtectionStatus contaminantProtectionStatus = ContaminantProtectionStatus.NONE;
+ /**
+ * Client can enable/disable contaminant presence detection through
+ * enableContaminantPresenceDetection when true.
+ */
+ boolean supportsEnableContaminantPresenceDetection;
+ /**
+ * Current status of contaminant detection algorithm.
+ */
+ ContaminantDetectionStatus contaminantDetectionStatus = ContaminantDetectionStatus.NOT_SUPPORTED;
+ /**
+ * UsbData status of the port.
+ */
+ boolean usbDataEnabled;
+}
diff --git a/usb/aidl/android/hardware/usb/Status.aidl b/usb/aidl/android/hardware/usb/Status.aidl
new file mode 100644
index 0000000..468ba4a
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/Status.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb;
+
+@VintfStability
+@Backing(type="int")
+enum Status {
+ SUCCESS = 0,
+ /**
+ * error value when the HAL operation fails for reasons not listed here.
+ */
+ ERROR = 1,
+ /**
+ * error value returned when input argument is invalid.
+ */
+ INVALID_ARGUMENT = 2,
+ /**
+ * error value returned when role string is unrecognized.
+ */
+ UNRECOGNIZED_ROLE = 3,
+ /**
+ * Error value returned when the operation is not supported.
+ */
+ NOT_SUPPORTED = 4,
+}
diff --git a/usb/aidl/conversion.log b/usb/aidl/conversion.log
new file mode 100644
index 0000000..c090446
--- /dev/null
+++ b/usb/aidl/conversion.log
@@ -0,0 +1,11 @@
+Notes relating to hidl2aidl conversion of android.hardware.usb@1.3 to android.hardware.usb (if any) follow:
+Unhandled comments from android.hardware.usb@1.1::types follow. Consider using hidl-lint to locate these and fixup as many as possible.
+ // NOTE: suffix '_1_1' is for legacy ABI compatibility. It cannot be
+ // changed to 'PortMode' which the convention dictates.
+ // NOTE: suffix '_1_1' is for legacy ABI compatibility. It cannot be
+ // changed to 'PortStatus' which the convention dictates.
+
+An unknown named type was found in translation: android.hardware.usb@1.0::PortStatus
+An unknown named type was found in translation: android.hardware.usb@1.0::PortStatus
+An unknown named type was found in translation: android.hardware.usb@1.0::PortStatus
+END OF LOG
diff --git a/usb/aidl/default/Android.bp b/usb/aidl/default/Android.bp
new file mode 100644
index 0000000..da0cff2
--- /dev/null
+++ b/usb/aidl/default/Android.bp
@@ -0,0 +1,35 @@
+//
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_binary {
+ name: "android.hardware.usb-service.example",
+ relative_install_path: "hw",
+ init_rc: ["android.hardware.usb-service.example.rc"],
+ vintf_fragments: ["android.hardware.usb-service.example.xml"],
+ vendor: true,
+ srcs: [
+ "service.cpp",
+ "Usb.cpp",
+ ],
+ shared_libs: [
+ "android.hardware.usb-V1-ndk",
+ "libbase",
+ "libbinder_ndk",
+ "libcutils",
+ "liblog",
+ "libutils",
+ ],
+}
diff --git a/usb/aidl/default/Usb.cpp b/usb/aidl/default/Usb.cpp
new file mode 100644
index 0000000..1105376
--- /dev/null
+++ b/usb/aidl/default/Usb.cpp
@@ -0,0 +1,693 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.usb.aidl-service"
+
+#include <aidl/android/hardware/usb/PortRole.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/strings.h>
+#include <assert.h>
+#include <dirent.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <chrono>
+#include <regex>
+#include <thread>
+#include <unordered_map>
+
+#include <cutils/uevent.h>
+#include <sys/epoll.h>
+#include <utils/Errors.h>
+#include <utils/StrongPointer.h>
+
+#include "Usb.h"
+
+using android::base::GetProperty;
+using android::base::Trim;
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace usb {
+
+constexpr char kTypecPath[] = "/sys/class/typec/";
+constexpr char kDataRoleNode[] = "/data_role";
+constexpr char kPowerRoleNode[] = "/power_role";
+
+// Set by the signal handler to destroy the thread
+volatile bool destroyThread;
+
+void queryVersionHelper(android::hardware::usb::Usb *usb,
+ std::vector<PortStatus> *currentPortStatus);
+
+ScopedAStatus Usb::enableUsbData(const string& in_portName, bool in_enable, int64_t in_transactionId) {
+ std::vector<PortStatus> currentPortStatus;
+
+ pthread_mutex_lock(&mLock);
+ if (mCallback != NULL) {
+ ScopedAStatus ret = mCallback->notifyEnableUsbDataStatus(
+ in_portName, true, in_enable ? Status::SUCCESS : Status::ERROR, in_transactionId);
+ if (!ret.isOk())
+ ALOGE("notifyEnableUsbDataStatus error %s", ret.getDescription().c_str());
+ } else {
+ ALOGE("Not notifying the userspace. Callback is not set");
+ }
+ pthread_mutex_unlock(&mLock);
+ queryVersionHelper(this, ¤tPortStatus);
+
+ return ScopedAStatus::ok();
+}
+
+Status queryMoistureDetectionStatus(std::vector<PortStatus> *currentPortStatus) {
+ string enabled, status, path, DetectedPath;
+
+ for (int i = 0; i < currentPortStatus->size(); i++) {
+ (*currentPortStatus)[i].supportedContaminantProtectionModes
+ .push_back(ContaminantProtectionMode::NONE);
+ (*currentPortStatus)[i].contaminantProtectionStatus
+ = ContaminantProtectionStatus::NONE;
+ (*currentPortStatus)[i].contaminantDetectionStatus
+ = ContaminantDetectionStatus::NOT_SUPPORTED;
+ (*currentPortStatus)[i].supportsEnableContaminantPresenceDetection = false;
+ (*currentPortStatus)[i].supportsEnableContaminantPresenceProtection = false;
+ }
+
+ return Status::SUCCESS;
+}
+
+string appendRoleNodeHelper(const string &portName, PortRole::Tag tag) {
+ string node(kTypecPath + portName);
+
+ switch (tag) {
+ case PortRole::dataRole:
+ return node + kDataRoleNode;
+ case PortRole::powerRole:
+ return node + kPowerRoleNode;
+ case PortRole::mode:
+ return node + "/port_type";
+ default:
+ return "";
+ }
+}
+
+string convertRoletoString(PortRole role) {
+ if (role.getTag() == PortRole::powerRole) {
+ if (role.get<PortRole::powerRole>() == PortPowerRole::SOURCE)
+ return "source";
+ else if (role.get<PortRole::powerRole>() == PortPowerRole::SINK)
+ return "sink";
+ } else if (role.getTag() == PortRole::dataRole) {
+ if (role.get<PortRole::dataRole>() == PortDataRole::HOST)
+ return "host";
+ if (role.get<PortRole::dataRole>() == PortDataRole::DEVICE)
+ return "device";
+ } else if (role.getTag() == PortRole::mode) {
+ if (role.get<PortRole::mode>() == PortMode::UFP)
+ return "sink";
+ if (role.get<PortRole::mode>() == PortMode::DFP)
+ return "source";
+ }
+ return "none";
+}
+
+void extractRole(string *roleName) {
+ std::size_t first, last;
+
+ first = roleName->find("[");
+ last = roleName->find("]");
+
+ if (first != string::npos && last != string::npos) {
+ *roleName = roleName->substr(first + 1, last - first - 1);
+ }
+}
+
+void switchToDrp(const string &portName) {
+ string filename = appendRoleNodeHelper(string(portName.c_str()), PortRole::mode);
+ FILE *fp;
+
+ if (filename != "") {
+ fp = fopen(filename.c_str(), "w");
+ if (fp != NULL) {
+ int ret = fputs("dual", fp);
+ fclose(fp);
+ if (ret == EOF)
+ ALOGE("Fatal: Error while switching back to drp");
+ } else {
+ ALOGE("Fatal: Cannot open file to switch back to drp");
+ }
+ } else {
+ ALOGE("Fatal: invalid node type");
+ }
+}
+
+bool switchMode(const string &portName, const PortRole &in_role, struct Usb *usb) {
+ string filename = appendRoleNodeHelper(string(portName.c_str()), in_role.getTag());
+ string written;
+ FILE *fp;
+ bool roleSwitch = false;
+
+ if (filename == "") {
+ ALOGE("Fatal: invalid node type");
+ return false;
+ }
+
+ fp = fopen(filename.c_str(), "w");
+ if (fp != NULL) {
+ // Hold the lock here to prevent loosing connected signals
+ // as once the file is written the partner added signal
+ // can arrive anytime.
+ pthread_mutex_lock(&usb->mPartnerLock);
+ usb->mPartnerUp = false;
+ int ret = fputs(convertRoletoString(in_role).c_str(), fp);
+ fclose(fp);
+
+ if (ret != EOF) {
+ struct timespec to;
+ struct timespec now;
+
+ wait_again:
+ clock_gettime(CLOCK_MONOTONIC, &now);
+ to.tv_sec = now.tv_sec + PORT_TYPE_TIMEOUT;
+ to.tv_nsec = now.tv_nsec;
+
+ int err = pthread_cond_timedwait(&usb->mPartnerCV, &usb->mPartnerLock, &to);
+ // There are no uevent signals which implies role swap timed out.
+ if (err == ETIMEDOUT) {
+ ALOGI("uevents wait timedout");
+ // Validity check.
+ } else if (!usb->mPartnerUp) {
+ goto wait_again;
+ // Role switch succeeded since usb->mPartnerUp is true.
+ } else {
+ roleSwitch = true;
+ }
+ } else {
+ ALOGI("Role switch failed while wrting to file");
+ }
+ pthread_mutex_unlock(&usb->mPartnerLock);
+ }
+
+ if (!roleSwitch)
+ switchToDrp(string(portName.c_str()));
+
+ return roleSwitch;
+}
+
+Usb::Usb()
+ : mLock(PTHREAD_MUTEX_INITIALIZER),
+ mRoleSwitchLock(PTHREAD_MUTEX_INITIALIZER),
+ mPartnerLock(PTHREAD_MUTEX_INITIALIZER),
+ mPartnerUp(false)
+{
+ pthread_condattr_t attr;
+ if (pthread_condattr_init(&attr)) {
+ ALOGE("pthread_condattr_init failed: %s", strerror(errno));
+ abort();
+ }
+ if (pthread_condattr_setclock(&attr, CLOCK_MONOTONIC)) {
+ ALOGE("pthread_condattr_setclock failed: %s", strerror(errno));
+ abort();
+ }
+ if (pthread_cond_init(&mPartnerCV, &attr)) {
+ ALOGE("pthread_cond_init failed: %s", strerror(errno));
+ abort();
+ }
+ if (pthread_condattr_destroy(&attr)) {
+ ALOGE("pthread_condattr_destroy failed: %s", strerror(errno));
+ abort();
+ }
+}
+
+ScopedAStatus Usb::switchRole(const string& in_portName,
+ const PortRole& in_role, int64_t in_transactionId) {
+ string filename = appendRoleNodeHelper(string(in_portName.c_str()), in_role.getTag());
+ string written;
+ FILE *fp;
+ bool roleSwitch = false;
+
+ if (filename == "") {
+ ALOGE("Fatal: invalid node type");
+ return ScopedAStatus::ok();
+ }
+
+ pthread_mutex_lock(&mRoleSwitchLock);
+
+ ALOGI("filename write: %s role:%s", filename.c_str(), convertRoletoString(in_role).c_str());
+
+ if (in_role.getTag() == PortRole::mode) {
+ roleSwitch = switchMode(in_portName, in_role, this);
+ } else {
+ fp = fopen(filename.c_str(), "w");
+ if (fp != NULL) {
+ int ret = fputs(convertRoletoString(in_role).c_str(), fp);
+ fclose(fp);
+ if ((ret != EOF) && ReadFileToString(filename, &written)) {
+ written = Trim(written);
+ extractRole(&written);
+ ALOGI("written: %s", written.c_str());
+ if (written == convertRoletoString(in_role)) {
+ roleSwitch = true;
+ } else {
+ ALOGE("Role switch failed");
+ }
+ } else {
+ ALOGE("failed to update the new role");
+ }
+ } else {
+ ALOGE("fopen failed");
+ }
+ }
+
+ pthread_mutex_lock(&mLock);
+ if (mCallback != NULL) {
+ ScopedAStatus ret = mCallback->notifyRoleSwitchStatus(
+ in_portName, in_role, roleSwitch ? Status::SUCCESS : Status::ERROR, in_transactionId);
+ if (!ret.isOk())
+ ALOGE("RoleSwitchStatus error %s", ret.getDescription().c_str());
+ } else {
+ ALOGE("Not notifying the userspace. Callback is not set");
+ }
+ pthread_mutex_unlock(&mLock);
+ pthread_mutex_unlock(&mRoleSwitchLock);
+
+ return ScopedAStatus::ok();
+}
+
+Status getAccessoryConnected(const string &portName, string *accessory) {
+ string filename = kTypecPath + portName + "-partner/accessory_mode";
+
+ if (!ReadFileToString(filename, accessory)) {
+ ALOGE("getAccessoryConnected: Failed to open filesystem node: %s", filename.c_str());
+ return Status::ERROR;
+ }
+ *accessory = Trim(*accessory);
+
+ return Status::SUCCESS;
+}
+
+Status getCurrentRoleHelper(const string &portName, bool connected, PortRole *currentRole) {
+ string filename;
+ string roleName;
+ string accessory;
+
+ // Mode
+
+ if (currentRole->getTag() == PortRole::powerRole) {
+ filename = kTypecPath + portName + kPowerRoleNode;
+ currentRole->set<PortRole::powerRole>(PortPowerRole::NONE);
+ } else if (currentRole->getTag() == PortRole::dataRole) {
+ filename = kTypecPath + portName + kDataRoleNode;
+ currentRole->set<PortRole::dataRole>(PortDataRole::NONE);
+ } else if (currentRole->getTag() == PortRole::mode) {
+ filename = kTypecPath + portName + kDataRoleNode;
+ currentRole->set<PortRole::mode>(PortMode::NONE);
+ } else {
+ return Status::ERROR;
+ }
+
+ if (!connected)
+ return Status::SUCCESS;
+
+ if (currentRole->getTag() == PortRole::mode) {
+ if (getAccessoryConnected(portName, &accessory) != Status::SUCCESS) {
+ return Status::ERROR;
+ }
+ if (accessory == "analog_audio") {
+ currentRole->set<PortRole::mode>(PortMode::AUDIO_ACCESSORY);
+ return Status::SUCCESS;
+ } else if (accessory == "debug") {
+ currentRole->set<PortRole::mode>(PortMode::DEBUG_ACCESSORY);
+ return Status::SUCCESS;
+ }
+ }
+
+ if (!ReadFileToString(filename, &roleName)) {
+ ALOGE("getCurrentRole: Failed to open filesystem node: %s", filename.c_str());
+ return Status::ERROR;
+ }
+
+ roleName = Trim(roleName);
+ extractRole(&roleName);
+
+ if (roleName == "source") {
+ currentRole->set<PortRole::powerRole>(PortPowerRole::SOURCE);
+ } else if (roleName == "sink") {
+ currentRole->set<PortRole::powerRole>(PortPowerRole::SINK);
+ } else if (roleName == "host") {
+ if (currentRole->getTag() == PortRole::dataRole)
+ currentRole->set<PortRole::dataRole>(PortDataRole::HOST);
+ else
+ currentRole->set<PortRole::mode>(PortMode::DFP);
+ } else if (roleName == "device") {
+ if (currentRole->getTag() == PortRole::dataRole)
+ currentRole->set<PortRole::dataRole>(PortDataRole::DEVICE);
+ else
+ currentRole->set<PortRole::mode>(PortMode::UFP);
+ } else if (roleName != "none") {
+ /* case for none has already been addressed.
+ * so we check if the role isn't none.
+ */
+ return Status::UNRECOGNIZED_ROLE;
+ }
+
+ return Status::SUCCESS;
+}
+
+Status getTypeCPortNamesHelper(std::unordered_map<string, bool> *names) {
+ DIR *dp;
+
+ dp = opendir(kTypecPath);
+ if (dp != NULL) {
+ struct dirent *ep;
+
+ while ((ep = readdir(dp))) {
+ if (ep->d_type == DT_LNK) {
+ if (string::npos == string(ep->d_name).find("-partner")) {
+ std::unordered_map<string, bool>::const_iterator portName =
+ names->find(ep->d_name);
+ if (portName == names->end()) {
+ names->insert({ep->d_name, false});
+ }
+ } else {
+ (*names)[std::strtok(ep->d_name, "-")] = true;
+ }
+ }
+ }
+ closedir(dp);
+ return Status::SUCCESS;
+ }
+
+ ALOGE("Failed to open /sys/class/typec");
+ return Status::ERROR;
+}
+
+bool canSwitchRoleHelper(const string &portName) {
+ string filename = kTypecPath + portName + "-partner/supports_usb_power_delivery";
+ string supportsPD;
+
+ if (ReadFileToString(filename, &supportsPD)) {
+ supportsPD = Trim(supportsPD);
+ if (supportsPD == "yes") {
+ return true;
+ }
+ }
+
+ return false;
+}
+
+Status getPortStatusHelper(std::vector<PortStatus> *currentPortStatus) {
+ std::unordered_map<string, bool> names;
+ Status result = getTypeCPortNamesHelper(&names);
+ int i = -1;
+
+ if (result == Status::SUCCESS) {
+ currentPortStatus->resize(names.size());
+ for (std::pair<string, bool> port : names) {
+ i++;
+ ALOGI("%s", port.first.c_str());
+ (*currentPortStatus)[i].portName = port.first;
+
+ PortRole currentRole;
+ currentRole.set<PortRole::powerRole>(PortPowerRole::NONE);
+ if (getCurrentRoleHelper(port.first, port.second, ¤tRole) == Status::SUCCESS){
+ (*currentPortStatus)[i].currentPowerRole = currentRole.get<PortRole::powerRole>();
+ } else {
+ ALOGE("Error while retrieving portNames");
+ goto done;
+ }
+
+ currentRole.set<PortRole::dataRole>(PortDataRole::NONE);
+ if (getCurrentRoleHelper(port.first, port.second, ¤tRole) == Status::SUCCESS) {
+ (*currentPortStatus)[i].currentDataRole = currentRole.get<PortRole::dataRole>();
+ } else {
+ ALOGE("Error while retrieving current port role");
+ goto done;
+ }
+
+ currentRole.set<PortRole::mode>(PortMode::NONE);
+ if (getCurrentRoleHelper(port.first, port.second, ¤tRole) == Status::SUCCESS) {
+ (*currentPortStatus)[i].currentMode = currentRole.get<PortRole::mode>();
+ } else {
+ ALOGE("Error while retrieving current data role");
+ goto done;
+ }
+
+ (*currentPortStatus)[i].canChangeMode = true;
+ (*currentPortStatus)[i].canChangeDataRole =
+ port.second ? canSwitchRoleHelper(port.first) : false;
+ (*currentPortStatus)[i].canChangePowerRole =
+ port.second ? canSwitchRoleHelper(port.first) : false;
+
+ (*currentPortStatus)[i].supportedModes.push_back(PortMode::DRP);
+ (*currentPortStatus)[i].usbDataEnabled = true;
+
+ ALOGI("%d:%s connected:%d canChangeMode:%d canChagedata:%d canChangePower:%d "
+ "usbDataEnabled:%d",
+ i, port.first.c_str(), port.second,
+ (*currentPortStatus)[i].canChangeMode,
+ (*currentPortStatus)[i].canChangeDataRole,
+ (*currentPortStatus)[i].canChangePowerRole, 0);
+ }
+
+ return Status::SUCCESS;
+ }
+done:
+ return Status::ERROR;
+}
+
+void queryVersionHelper(android::hardware::usb::Usb *usb,
+ std::vector<PortStatus> *currentPortStatus) {
+ Status status;
+ pthread_mutex_lock(&usb->mLock);
+ status = getPortStatusHelper(currentPortStatus);
+ queryMoistureDetectionStatus(currentPortStatus);
+ if (usb->mCallback != NULL) {
+ ScopedAStatus ret = usb->mCallback->notifyPortStatusChange(*currentPortStatus,
+ status);
+ if (!ret.isOk())
+ ALOGE("queryPortStatus error %s", ret.getDescription().c_str());
+ } else {
+ ALOGI("Notifying userspace skipped. Callback is NULL");
+ }
+ pthread_mutex_unlock(&usb->mLock);
+}
+
+ScopedAStatus Usb::queryPortStatus(int64_t in_transactionId) {
+ std::vector<PortStatus> currentPortStatus;
+
+ queryVersionHelper(this, ¤tPortStatus);
+ pthread_mutex_lock(&mLock);
+ if (mCallback != NULL) {
+ ScopedAStatus ret = mCallback->notifyQueryPortStatus(
+ "all", Status::SUCCESS, in_transactionId);
+ if (!ret.isOk())
+ ALOGE("notifyQueryPortStatus error %s", ret.getDescription().c_str());
+ } else {
+ ALOGE("Not notifying the userspace. Callback is not set");
+ }
+ pthread_mutex_unlock(&mLock);
+
+ return ScopedAStatus::ok();
+}
+
+ScopedAStatus Usb::enableContaminantPresenceDetection(const string& in_portName,
+ bool /*in_enable*/, int64_t in_transactionId) {
+ std::vector<PortStatus> currentPortStatus;
+
+ pthread_mutex_lock(&mLock);
+ if (mCallback != NULL) {
+ ScopedAStatus ret = mCallback->notifyContaminantEnabledStatus(
+ in_portName, false, Status::ERROR, in_transactionId);
+ if (!ret.isOk())
+ ALOGE("enableContaminantPresenceDetection error %s", ret.getDescription().c_str());
+ } else {
+ ALOGE("Not notifying the userspace. Callback is not set");
+ }
+ pthread_mutex_unlock(&mLock);
+
+ queryVersionHelper(this, ¤tPortStatus);
+ return ScopedAStatus::ok();
+}
+
+
+struct data {
+ int uevent_fd;
+ ::aidl::android::hardware::usb::Usb *usb;
+};
+
+static void uevent_event(uint32_t /*epevents*/, struct data *payload) {
+ char msg[UEVENT_MSG_LEN + 2];
+ char *cp;
+ int n;
+
+ n = uevent_kernel_multicast_recv(payload->uevent_fd, msg, UEVENT_MSG_LEN);
+ if (n <= 0)
+ return;
+ if (n >= UEVENT_MSG_LEN) /* overflow -- discard */
+ return;
+
+ msg[n] = '\0';
+ msg[n + 1] = '\0';
+ cp = msg;
+
+ while (*cp) {
+ if (std::regex_match(cp, std::regex("(add)(.*)(-partner)"))) {
+ ALOGI("partner added");
+ pthread_mutex_lock(&payload->usb->mPartnerLock);
+ payload->usb->mPartnerUp = true;
+ pthread_cond_signal(&payload->usb->mPartnerCV);
+ pthread_mutex_unlock(&payload->usb->mPartnerLock);
+ } else if (!strncmp(cp, "DEVTYPE=typec_", strlen("DEVTYPE=typec_"))) {
+ std::vector<PortStatus> currentPortStatus;
+ queryVersionHelper(payload->usb, ¤tPortStatus);
+
+ // Role switch is not in progress and port is in disconnected state
+ if (!pthread_mutex_trylock(&payload->usb->mRoleSwitchLock)) {
+ for (unsigned long i = 0; i < currentPortStatus.size(); i++) {
+ DIR *dp =
+ opendir(string(kTypecPath +
+ string(currentPortStatus[i].portName.c_str()) +
+ "-partner").c_str());
+ if (dp == NULL) {
+ switchToDrp(currentPortStatus[i].portName);
+ } else {
+ closedir(dp);
+ }
+ }
+ pthread_mutex_unlock(&payload->usb->mRoleSwitchLock);
+ }
+ break;
+ } /* advance to after the next \0 */
+ while (*cp++) {
+ }
+ }
+}
+
+void *work(void *param) {
+ int epoll_fd, uevent_fd;
+ struct epoll_event ev;
+ int nevents = 0;
+ struct data payload;
+
+ uevent_fd = uevent_open_socket(UEVENT_MAX_EVENTS * UEVENT_MSG_LEN, true);
+
+ if (uevent_fd < 0) {
+ ALOGE("uevent_init: uevent_open_socket failed\n");
+ return NULL;
+ }
+
+ payload.uevent_fd = uevent_fd;
+ payload.usb = (::aidl::android::hardware::usb::Usb *)param;
+
+ fcntl(uevent_fd, F_SETFL, O_NONBLOCK);
+
+ ev.events = EPOLLIN;
+ ev.data.ptr = (void *)uevent_event;
+
+ epoll_fd = epoll_create(UEVENT_MAX_EVENTS);
+ if (epoll_fd == -1) {
+ ALOGE("epoll_create failed; errno=%d", errno);
+ goto error;
+ }
+
+ if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, uevent_fd, &ev) == -1) {
+ ALOGE("epoll_ctl failed; errno=%d", errno);
+ goto error;
+ }
+
+ while (!destroyThread) {
+ struct epoll_event events[UEVENT_MAX_EVENTS];
+
+ nevents = epoll_wait(epoll_fd, events, UEVENT_MAX_EVENTS, -1);
+ if (nevents == -1) {
+ if (errno == EINTR)
+ continue;
+ ALOGE("usb epoll_wait failed; errno=%d", errno);
+ break;
+ }
+
+ for (int n = 0; n < nevents; ++n) {
+ if (events[n].data.ptr)
+ (*(void (*)(int, struct data *payload))events[n].data.ptr)(events[n].events,
+ &payload);
+ }
+ }
+
+ ALOGI("exiting worker thread");
+error:
+ close(uevent_fd);
+
+ if (epoll_fd >= 0)
+ close(epoll_fd);
+
+ return NULL;
+}
+
+void sighandler(int sig) {
+ if (sig == SIGUSR1) {
+ destroyThread = true;
+ ALOGI("destroy set");
+ return;
+ }
+ signal(SIGUSR1, sighandler);
+}
+
+ScopedAStatus Usb::setCallback(
+ const shared_ptr<IUsbCallback>& in_callback) {
+
+ pthread_mutex_lock(&mLock);
+ if ((mCallback == NULL && in_callback == NULL) ||
+ (mCallback != NULL && in_callback != NULL)) {
+ mCallback = in_callback;
+ pthread_mutex_unlock(&mLock);
+ return ScopedAStatus::ok();
+ }
+
+ mCallback = in_callback;
+ ALOGI("registering callback");
+
+ if (mCallback == NULL) {
+ if (!pthread_kill(mPoll, SIGUSR1)) {
+ pthread_join(mPoll, NULL);
+ ALOGI("pthread destroyed");
+ }
+ pthread_mutex_unlock(&mLock);
+ return ScopedAStatus::ok();
+ }
+
+ destroyThread = false;
+ signal(SIGUSR1, sighandler);
+
+ /*
+ * Create a background thread if the old callback value is NULL
+ * and being updated with a new value.
+ */
+ if (pthread_create(&mPoll, NULL, work, this)) {
+ ALOGE("pthread creation failed %d", errno);
+ mCallback = NULL;
+ }
+
+ pthread_mutex_unlock(&mLock);
+ return ScopedAStatus::ok();
+}
+
+} // namespace usb
+} // namespace hardware
+} // namespace android
+} // aidl
diff --git a/usb/aidl/default/Usb.h b/usb/aidl/default/Usb.h
new file mode 100644
index 0000000..bca86ae
--- /dev/null
+++ b/usb/aidl/default/Usb.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/file.h>
+#include <aidl/android/hardware/usb/BnUsb.h>
+#include <aidl/android/hardware/usb/BnUsbCallback.h>
+#include <utils/Log.h>
+
+#define UEVENT_MSG_LEN 2048
+#define UEVENT_MAX_EVENTS 64
+// The type-c stack waits for 4.5 - 5.5 secs before declaring a port non-pd.
+// The -partner directory would not be created until this is done.
+// Having a margin of ~3 secs for the directory and other related bookeeping
+// structures created and uvent fired.
+#define PORT_TYPE_TIMEOUT 8
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace usb {
+
+using ::aidl::android::hardware::usb::IUsbCallback;
+using ::aidl::android::hardware::usb::PortRole;
+using ::android::base::ReadFileToString;
+using ::android::base::WriteStringToFile;
+using ::android::sp;
+using ::ndk::ScopedAStatus;
+using ::std::shared_ptr;
+using ::std::string;
+
+struct Usb : public BnUsb {
+ Usb();
+
+ ScopedAStatus enableContaminantPresenceDetection(const std::string& in_portName,
+ bool in_enable, int64_t in_transactionId) override;
+ ScopedAStatus queryPortStatus(int64_t in_transactionId) override;
+ ScopedAStatus setCallback(const shared_ptr<IUsbCallback>& in_callback) override;
+ ScopedAStatus switchRole(const string& in_portName, const PortRole& in_role,
+ int64_t in_transactionId) override;
+ ScopedAStatus enableUsbData(const string& in_portName, bool in_enable,
+ int64_t in_transactionId) override;
+
+ shared_ptr<IUsbCallback> mCallback;
+ // Protects mCallback variable
+ pthread_mutex_t mLock;
+ // Protects roleSwitch operation
+ pthread_mutex_t mRoleSwitchLock;
+ // Threads waiting for the partner to come back wait here
+ pthread_cond_t mPartnerCV;
+ // lock protecting mPartnerCV
+ pthread_mutex_t mPartnerLock;
+ // Variable to signal partner coming back online after type switch
+ bool mPartnerUp;
+ private:
+ pthread_t mPoll;
+};
+
+} // namespace usb
+} // namespace hardware
+} // namespace android
+} // aidl
diff --git a/usb/aidl/default/android.hardware.usb-service.example.rc b/usb/aidl/default/android.hardware.usb-service.example.rc
new file mode 100644
index 0000000..335bca7
--- /dev/null
+++ b/usb/aidl/default/android.hardware.usb-service.example.rc
@@ -0,0 +1,4 @@
+service vendor.usb_default /vendor/bin/hw/android.hardware.usb-service.example
+ class hal
+ user system
+ group system
diff --git a/usb/aidl/default/android.hardware.usb-service.example.xml b/usb/aidl/default/android.hardware.usb-service.example.xml
new file mode 100644
index 0000000..6088194
--- /dev/null
+++ b/usb/aidl/default/android.hardware.usb-service.example.xml
@@ -0,0 +1,10 @@
+<manifest version="1.0" type="device">
+ <hal format="aidl">
+ <name>android.hardware.usb</name>
+ <version>1</version>
+ <interface>
+ <name>IUsb</name>
+ <instance>default</instance>
+ </interface>
+ </hal>
+</manifest>
diff --git a/usb/aidl/default/service.cpp b/usb/aidl/default/service.cpp
new file mode 100644
index 0000000..398458a
--- /dev/null
+++ b/usb/aidl/default/service.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+
+#include "Usb.h"
+
+using ::aidl::android::hardware::usb::Usb;
+
+int main() {
+ ABinderProcess_setThreadPoolMaxThreadCount(0);
+ std::shared_ptr<Usb> usb = ndk::SharedRefBase::make<Usb>();
+
+ const std::string instance = std::string() + Usb::descriptor + "/default";
+ binder_status_t status = AServiceManager_addService(usb->asBinder().get(), instance.c_str());
+ CHECK(status == STATUS_OK);
+
+ ABinderProcess_joinThreadPool();
+ return -1; // Should never be reached
+}