Support USB Gadget V1.1 HAL

USB Gadget V1.1 HAL supports USB port reset interface.

Bug: 138702846
Test: build pass, function works
Change-Id: Ia4b3b85bb0ce74307599832f849d3e23c2546187

api/system-current.txt

@@ -3622,6 +3622,7 @@ package android.hardware.usb {
     method @RequiresPermission(android.Manifest.permission.MANAGE_USB) public long getCurrentFunctions();
     method @NonNull @RequiresPermission(android.Manifest.permission.MANAGE_USB) public java.util.List<android.hardware.usb.UsbPort> getPorts();
     method @RequiresPermission(android.Manifest.permission.MANAGE_USB) public void grantPermission(android.hardware.usb.UsbDevice, String);
+    method @RequiresPermission(android.Manifest.permission.MANAGE_USB) public void resetUsbGadget();
     method @RequiresPermission(android.Manifest.permission.MANAGE_USB) public void setCurrentFunctions(long);
     field @RequiresPermission(android.Manifest.permission.MANAGE_USB) public static final String ACTION_USB_PORT_CHANGED = "android.hardware.usb.action.USB_PORT_CHANGED";
     field public static final String ACTION_USB_STATE = "android.hardware.usb.action.USB_STATE";

core/java/android/hardware/usb/IUsbManager.aidl

@@ -126,6 +126,9 @@ interface IUsbManager
     /* Gets the current screen unlocked functions. */
     long getScreenUnlockedFunctions();
 
+    /* Resets the USB gadget. */
+    void resetUsbGadget();
+
     /* Get the functionfs control handle for the given function. Usb
      * descriptors will already be written, and the handle will be
      * ready to use.

core/java/android/hardware/usb/UsbManager.java

@@ -793,6 +793,25 @@ public class UsbManager {
         }
     }
 
+    /**
+     * Resets the USB Gadget.
+     * <p>
+     * Performs USB data stack reset through USB Gadget HAL.
+     * It will force USB data connection reset. The connection will disconnect and reconnect.
+     * </p>
+     *
+     * @hide
+     */
+    @SystemApi
+    @RequiresPermission(Manifest.permission.MANAGE_USB)
+    public void resetUsbGadget() {
+        try {
+            mService.resetUsbGadget();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
     /**
      * Returns a list of physical USB ports on the device.
      * <p>

services/usb/Android.bp

@@ -19,5 +19,6 @@ java_library_static {
         "android.hardware.usb-V1.1-java",
         "android.hardware.usb-V1.2-java",
         "android.hardware.usb.gadget-V1.0-java",
+        "android.hardware.usb.gadget-V1.1-java",
     ],
 }

services/usb/java/com/android/server/usb/UsbDeviceManager.java

@@ -161,6 +161,7 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser
     private static final int MSG_GET_CURRENT_USB_FUNCTIONS = 16;
     private static final int MSG_FUNCTION_SWITCH_TIMEOUT = 17;
     private static final int MSG_GADGET_HAL_REGISTERED = 18;
+    private static final int MSG_RESET_USB_GADGET = 19;
 
     private static final int AUDIO_MODE_SOURCE = 1;
 
@@ -1846,6 +1847,23 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser
                         }
                     }
                     break;
+                case MSG_RESET_USB_GADGET:
+                    synchronized (mGadgetProxyLock) {
+                        if (mGadgetProxy == null) {
+                            Slog.e(TAG, "reset Usb Gadget mGadgetProxy is null");
+                            break;
+                        }
+
+                        try {
+                            android.hardware.usb.gadget.V1_1.IUsbGadget gadgetProxy =
+                                    android.hardware.usb.gadget.V1_1.IUsbGadget
+                                            .castFrom(mGadgetProxy);
+                            gadgetProxy.reset();
+                        } catch (RemoteException e) {
+                            Slog.e(TAG, "reset Usb Gadget failed", e);
+                        }
+                    }
+                    break;
                 default:
                     super.handleMessage(msg);
             }
@@ -2054,6 +2072,17 @@ public class UsbDeviceManager implements ActivityTaskManagerInternal.ScreenObser
         mHandler.sendMessage(MSG_SET_SCREEN_UNLOCKED_FUNCTIONS, functions);
     }
 
+    /**
+     * Resets the USB Gadget.
+     */
+    public void resetUsbGadget() {
+        if (DEBUG) {
+            Slog.d(TAG, "reset Usb Gadget");
+        }
+
+        mHandler.sendMessage(MSG_RESET_USB_GADGET, null);
+    }
+
     private void onAdbEnabled(boolean enabled) {
         mHandler.sendMessage(MSG_ENABLE_ADB, enabled);
     }

services/usb/java/com/android/server/usb/UsbService.java

@@ -621,6 +621,19 @@ public class UsbService extends IUsbManager.Stub {
         return mDeviceManager.getScreenUnlockedFunctions();
     }
 
+    @Override
+    public void resetUsbGadget() {
+        mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null);
+        Preconditions.checkNotNull(mDeviceManager, "DeviceManager must not be null");
+
+        final long ident = Binder.clearCallingIdentity();
+        try {
+            mDeviceManager.resetUsbGadget();
+        } finally {
+            Binder.restoreCallingIdentity(ident);
+        }
+    }
+
     @Override
     public List<ParcelableUsbPort> getPorts() {
         mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null);