| /* |
| * Copyright (C) 2010 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 an |
| * limitations under the License. |
| */ |
| |
| package com.android.server.usb; |
| |
| import android.annotation.NonNull; |
| import android.annotation.UserIdInt; |
| import android.app.PendingIntent; |
| import android.app.admin.DevicePolicyManager; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.PackageManager; |
| import android.hardware.usb.IUsbManager; |
| import android.hardware.usb.UsbAccessory; |
| import android.hardware.usb.UsbDevice; |
| import android.hardware.usb.UsbManager; |
| import android.hardware.usb.UsbPort; |
| import android.hardware.usb.UsbPortStatus; |
| import android.os.Binder; |
| import android.os.Bundle; |
| import android.os.ParcelFileDescriptor; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.util.Slog; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.util.DumpUtils; |
| import com.android.internal.util.IndentingPrintWriter; |
| import com.android.internal.util.Preconditions; |
| import com.android.server.SystemService; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| |
| /** |
| * UsbService manages all USB related state, including both host and device support. |
| * Host related events and calls are delegated to UsbHostManager, and device related |
| * support is delegated to UsbDeviceManager. |
| */ |
| public class UsbService extends IUsbManager.Stub { |
| |
| public static class Lifecycle extends SystemService { |
| private UsbService mUsbService; |
| |
| public Lifecycle(Context context) { |
| super(context); |
| } |
| |
| @Override |
| public void onStart() { |
| mUsbService = new UsbService(getContext()); |
| publishBinderService(Context.USB_SERVICE, mUsbService); |
| } |
| |
| @Override |
| public void onBootPhase(int phase) { |
| if (phase == SystemService.PHASE_ACTIVITY_MANAGER_READY) { |
| mUsbService.systemReady(); |
| } else if (phase == SystemService.PHASE_BOOT_COMPLETED) { |
| mUsbService.bootCompleted(); |
| } |
| } |
| |
| @Override |
| public void onSwitchUser(int newUserId) { |
| mUsbService.onSwitchUser(newUserId); |
| } |
| |
| @Override |
| public void onStopUser(int userHandle) { |
| mUsbService.onStopUser(UserHandle.of(userHandle)); |
| } |
| |
| @Override |
| public void onUnlockUser(int userHandle) { |
| mUsbService.onUnlockUser(userHandle); |
| } |
| } |
| |
| private static final String TAG = "UsbService"; |
| |
| private final Context mContext; |
| private final UserManager mUserManager; |
| |
| private UsbDeviceManager mDeviceManager; |
| private UsbHostManager mHostManager; |
| private UsbPortManager mPortManager; |
| private final UsbAlsaManager mAlsaManager; |
| |
| private final UsbSettingsManager mSettingsManager; |
| |
| /** |
| * The user id of the current user. There might be several profiles (with separate user ids) |
| * per user. |
| */ |
| @GuardedBy("mLock") |
| private @UserIdInt int mCurrentUserId; |
| |
| private final Object mLock = new Object(); |
| |
| private UsbUserSettingsManager getSettingsForUser(@UserIdInt int userIdInt) { |
| return mSettingsManager.getSettingsForUser(userIdInt); |
| } |
| |
| public UsbService(Context context) { |
| mContext = context; |
| |
| mUserManager = context.getSystemService(UserManager.class); |
| mSettingsManager = new UsbSettingsManager(context); |
| mAlsaManager = new UsbAlsaManager(context); |
| |
| final PackageManager pm = mContext.getPackageManager(); |
| if (pm.hasSystemFeature(PackageManager.FEATURE_USB_HOST)) { |
| mHostManager = new UsbHostManager(context, mAlsaManager, mSettingsManager); |
| } |
| if (new File("/sys/class/android_usb").exists()) { |
| mDeviceManager = new UsbDeviceManager(context, mAlsaManager, mSettingsManager); |
| } |
| if (mHostManager != null || mDeviceManager != null) { |
| mPortManager = new UsbPortManager(context); |
| } |
| |
| onSwitchUser(UserHandle.USER_SYSTEM); |
| |
| BroadcastReceiver receiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| final String action = intent.getAction(); |
| if (DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED |
| .equals(action)) { |
| if (mDeviceManager != null) { |
| mDeviceManager.updateUserRestrictions(); |
| } |
| } |
| } |
| }; |
| |
| final IntentFilter filter = new IntentFilter(); |
| filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY); |
| filter.addAction(DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED); |
| mContext.registerReceiver(receiver, filter, null, null); |
| } |
| |
| /** |
| * Set new {@link #mCurrentUserId} and propagate it to other modules. |
| * |
| * @param newUserId The user id of the new current user. |
| */ |
| private void onSwitchUser(@UserIdInt int newUserId) { |
| synchronized (mLock) { |
| mCurrentUserId = newUserId; |
| |
| // The following two modules need to know about the current profile group. If they need |
| // to distinguish by profile of the user, the id has to be passed in the call to the |
| // module. |
| UsbProfileGroupSettingsManager settings = |
| mSettingsManager.getSettingsForProfileGroup(UserHandle.of(newUserId)); |
| if (mHostManager != null) { |
| mHostManager.setCurrentUserSettings(settings); |
| } |
| if (mDeviceManager != null) { |
| mDeviceManager.setCurrentUser(newUserId, settings); |
| } |
| } |
| } |
| |
| /** |
| * Execute operations when a user is stopped. |
| * |
| * @param stoppedUser The user that is stopped |
| */ |
| private void onStopUser(@NonNull UserHandle stoppedUser) { |
| mSettingsManager.remove(stoppedUser); |
| } |
| |
| public void systemReady() { |
| mAlsaManager.systemReady(); |
| |
| if (mDeviceManager != null) { |
| mDeviceManager.systemReady(); |
| } |
| if (mHostManager != null) { |
| mHostManager.systemReady(); |
| } |
| if (mPortManager != null) { |
| mPortManager.systemReady(); |
| } |
| } |
| |
| public void bootCompleted() { |
| if (mDeviceManager != null) { |
| mDeviceManager.bootCompleted(); |
| } |
| } |
| |
| /** Called when a user is unlocked. */ |
| public void onUnlockUser(int user) { |
| if (mDeviceManager != null) { |
| mDeviceManager.onUnlockUser(user); |
| } |
| } |
| |
| /* Returns a list of all currently attached USB devices (host mdoe) */ |
| @Override |
| public void getDeviceList(Bundle devices) { |
| if (mHostManager != null) { |
| mHostManager.getDeviceList(devices); |
| } |
| } |
| |
| /** |
| * Check if the calling user is in the same profile group as the {@link #mCurrentUserId |
| * current user}. |
| * |
| * @return Iff the caller is in the current user's profile group |
| */ |
| private boolean isCallerInCurrentUserProfileGroupLocked() { |
| int userIdInt = UserHandle.getCallingUserId(); |
| |
| long ident = clearCallingIdentity(); |
| try { |
| return mUserManager.isSameProfileGroup(userIdInt, mCurrentUserId); |
| } finally { |
| restoreCallingIdentity(ident); |
| } |
| } |
| |
| /* Opens the specified USB device (host mode) */ |
| @Override |
| public ParcelFileDescriptor openDevice(String deviceName) { |
| ParcelFileDescriptor fd = null; |
| |
| if (mHostManager != null) { |
| synchronized (mLock) { |
| if (deviceName != null) { |
| int userIdInt = UserHandle.getCallingUserId(); |
| boolean isCurrentUser = isCallerInCurrentUserProfileGroupLocked(); |
| |
| if (isCurrentUser) { |
| fd = mHostManager.openDevice(deviceName, getSettingsForUser(userIdInt)); |
| } else { |
| Slog.w(TAG, "Cannot open " + deviceName + " for user " + userIdInt + |
| " as user is not active."); |
| } |
| } |
| } |
| } |
| |
| return fd; |
| } |
| |
| /* returns the currently attached USB accessory (device mode) */ |
| @Override |
| public UsbAccessory getCurrentAccessory() { |
| if (mDeviceManager != null) { |
| return mDeviceManager.getCurrentAccessory(); |
| } else { |
| return null; |
| } |
| } |
| |
| /* opens the currently attached USB accessory (device mode) */ |
| @Override |
| public ParcelFileDescriptor openAccessory(UsbAccessory accessory) { |
| if (mDeviceManager != null) { |
| int userIdInt = UserHandle.getCallingUserId(); |
| |
| synchronized (mLock) { |
| boolean isCurrentUser = isCallerInCurrentUserProfileGroupLocked(); |
| |
| if (isCurrentUser) { |
| return mDeviceManager.openAccessory(accessory, getSettingsForUser(userIdInt)); |
| } else { |
| Slog.w(TAG, "Cannot open " + accessory + " for user " + userIdInt + |
| " as user is not active."); |
| } |
| } |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public void setDevicePackage(UsbDevice device, String packageName, int userId) { |
| device = Preconditions.checkNotNull(device); |
| |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| |
| UserHandle user = UserHandle.of(userId); |
| mSettingsManager.getSettingsForProfileGroup(user).setDevicePackage(device, packageName, |
| user); |
| } |
| |
| @Override |
| public void setAccessoryPackage(UsbAccessory accessory, String packageName, int userId) { |
| accessory = Preconditions.checkNotNull(accessory); |
| |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| |
| UserHandle user = UserHandle.of(userId); |
| mSettingsManager.getSettingsForProfileGroup(user).setAccessoryPackage(accessory, |
| packageName, user); |
| } |
| |
| @Override |
| public boolean hasDevicePermission(UsbDevice device) { |
| final int userId = UserHandle.getCallingUserId(); |
| return getSettingsForUser(userId).hasPermission(device); |
| } |
| |
| @Override |
| public boolean hasAccessoryPermission(UsbAccessory accessory) { |
| final int userId = UserHandle.getCallingUserId(); |
| return getSettingsForUser(userId).hasPermission(accessory); |
| } |
| |
| @Override |
| public void requestDevicePermission(UsbDevice device, String packageName, PendingIntent pi) { |
| final int userId = UserHandle.getCallingUserId(); |
| getSettingsForUser(userId).requestPermission(device, packageName, pi); |
| } |
| |
| @Override |
| public void requestAccessoryPermission( |
| UsbAccessory accessory, String packageName, PendingIntent pi) { |
| final int userId = UserHandle.getCallingUserId(); |
| getSettingsForUser(userId).requestPermission(accessory, packageName, pi); |
| } |
| |
| @Override |
| public void grantDevicePermission(UsbDevice device, int uid) { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| final int userId = UserHandle.getUserId(uid); |
| getSettingsForUser(userId).grantDevicePermission(device, uid); |
| } |
| |
| @Override |
| public void grantAccessoryPermission(UsbAccessory accessory, int uid) { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| final int userId = UserHandle.getUserId(uid); |
| getSettingsForUser(userId).grantAccessoryPermission(accessory, uid); |
| } |
| |
| @Override |
| public boolean hasDefaults(String packageName, int userId) { |
| packageName = Preconditions.checkStringNotEmpty(packageName); |
| |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| |
| UserHandle user = UserHandle.of(userId); |
| return mSettingsManager.getSettingsForProfileGroup(user).hasDefaults(packageName, user); |
| } |
| |
| @Override |
| public void clearDefaults(String packageName, int userId) { |
| packageName = Preconditions.checkStringNotEmpty(packageName); |
| |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| |
| UserHandle user = UserHandle.of(userId); |
| mSettingsManager.getSettingsForProfileGroup(user).clearDefaults(packageName, user); |
| } |
| |
| @Override |
| public boolean isFunctionEnabled(String function) { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| return mDeviceManager != null && mDeviceManager.isFunctionEnabled(function); |
| } |
| |
| @Override |
| public void setCurrentFunction(String function, boolean usbDataUnlocked) { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| |
| if (!isSupportedCurrentFunction(function)) { |
| Slog.w(TAG, "Caller of setCurrentFunction() requested unsupported USB function: " |
| + function); |
| function = UsbManager.USB_FUNCTION_NONE; |
| } |
| |
| if (mDeviceManager != null) { |
| mDeviceManager.setCurrentFunctions(function, usbDataUnlocked); |
| } else { |
| throw new IllegalStateException("USB device mode not supported"); |
| } |
| } |
| |
| @Override |
| public void setScreenUnlockedFunctions(String function) { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| |
| if (!isSupportedCurrentFunction(function)) { |
| Slog.w(TAG, "Caller of setScreenUnlockedFunctions() requested unsupported USB function:" |
| + function); |
| function = UsbManager.USB_FUNCTION_NONE; |
| } |
| |
| if (mDeviceManager != null) { |
| mDeviceManager.setScreenUnlockedFunctions(function); |
| } else { |
| throw new IllegalStateException("USB device mode not supported"); |
| } |
| } |
| |
| private static boolean isSupportedCurrentFunction(String function) { |
| if (function == null) return true; |
| |
| switch (function) { |
| case UsbManager.USB_FUNCTION_NONE: |
| case UsbManager.USB_FUNCTION_AUDIO_SOURCE: |
| case UsbManager.USB_FUNCTION_MIDI: |
| case UsbManager.USB_FUNCTION_MTP: |
| case UsbManager.USB_FUNCTION_PTP: |
| case UsbManager.USB_FUNCTION_RNDIS: |
| return true; |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public void allowUsbDebugging(boolean alwaysAllow, String publicKey) { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| mDeviceManager.allowUsbDebugging(alwaysAllow, publicKey); |
| } |
| |
| @Override |
| public void denyUsbDebugging() { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| mDeviceManager.denyUsbDebugging(); |
| } |
| |
| @Override |
| public void clearUsbDebuggingKeys() { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| mDeviceManager.clearUsbDebuggingKeys(); |
| } |
| |
| @Override |
| public UsbPort[] getPorts() { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| return mPortManager != null ? mPortManager.getPorts() : null; |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| @Override |
| public UsbPortStatus getPortStatus(String portId) { |
| Preconditions.checkNotNull(portId, "portId must not be null"); |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| return mPortManager != null ? mPortManager.getPortStatus(portId) : null; |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| @Override |
| public void setPortRoles(String portId, int powerRole, int dataRole) { |
| Preconditions.checkNotNull(portId, "portId must not be null"); |
| UsbPort.checkRoles(powerRole, dataRole); |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| if (mPortManager != null) { |
| mPortManager.setPortRoles(portId, powerRole, dataRole, null); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| @Override |
| public void setUsbDeviceConnectionHandler(ComponentName usbDeviceConnectionHandler) { |
| mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null); |
| synchronized (mLock) { |
| if (mCurrentUserId == UserHandle.getCallingUserId()) { |
| if (mHostManager != null) { |
| mHostManager.setUsbDeviceConnectionHandler(usbDeviceConnectionHandler); |
| } |
| } else { |
| throw new IllegalArgumentException("Only the current user can register a usb " + |
| "connection handler"); |
| } |
| } |
| } |
| |
| @Override |
| public void dump(FileDescriptor fd, PrintWriter writer, String[] args) { |
| if (!DumpUtils.checkDumpPermission(mContext, TAG, writer)) return; |
| |
| final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| if (args == null || args.length == 0 || "-a".equals(args[0])) { |
| pw.println("USB Manager State:"); |
| pw.increaseIndent(); |
| if (mDeviceManager != null) { |
| mDeviceManager.dump(pw); |
| } |
| if (mHostManager != null) { |
| mHostManager.dump(pw); |
| } |
| if (mPortManager != null) { |
| mPortManager.dump(pw); |
| } |
| mAlsaManager.dump(pw); |
| |
| mSettingsManager.dump(pw); |
| } else if (args.length == 4 && "set-port-roles".equals(args[0])) { |
| final String portId = args[1]; |
| final int powerRole; |
| switch (args[2]) { |
| case "source": |
| powerRole = UsbPort.POWER_ROLE_SOURCE; |
| break; |
| case "sink": |
| powerRole = UsbPort.POWER_ROLE_SINK; |
| break; |
| case "no-power": |
| powerRole = 0; |
| break; |
| default: |
| pw.println("Invalid power role: " + args[2]); |
| return; |
| } |
| final int dataRole; |
| switch (args[3]) { |
| case "host": |
| dataRole = UsbPort.DATA_ROLE_HOST; |
| break; |
| case "device": |
| dataRole = UsbPort.DATA_ROLE_DEVICE; |
| break; |
| case "no-data": |
| dataRole = 0; |
| break; |
| default: |
| pw.println("Invalid data role: " + args[3]); |
| return; |
| } |
| if (mPortManager != null) { |
| mPortManager.setPortRoles(portId, powerRole, dataRole, pw); |
| // Note: It might take some time for the side-effects of this operation |
| // to be fully applied by the kernel since the driver may need to |
| // renegotiate the USB port mode. If this proves to be an issue |
| // during debugging, it might be worth adding a sleep here before |
| // dumping the new state. |
| pw.println(); |
| mPortManager.dump(pw); |
| } |
| } else if (args.length == 3 && "add-port".equals(args[0])) { |
| final String portId = args[1]; |
| final int supportedModes; |
| switch (args[2]) { |
| case "ufp": |
| supportedModes = UsbPort.MODE_UFP; |
| break; |
| case "dfp": |
| supportedModes = UsbPort.MODE_DFP; |
| break; |
| case "dual": |
| supportedModes = UsbPort.MODE_DUAL; |
| break; |
| case "none": |
| supportedModes = 0; |
| break; |
| default: |
| pw.println("Invalid mode: " + args[2]); |
| return; |
| } |
| if (mPortManager != null) { |
| mPortManager.addSimulatedPort(portId, supportedModes, pw); |
| pw.println(); |
| mPortManager.dump(pw); |
| } |
| } else if (args.length == 5 && "connect-port".equals(args[0])) { |
| final String portId = args[1]; |
| final int mode; |
| final boolean canChangeMode = args[2].endsWith("?"); |
| switch (canChangeMode ? removeLastChar(args[2]) : args[2]) { |
| case "ufp": |
| mode = UsbPort.MODE_UFP; |
| break; |
| case "dfp": |
| mode = UsbPort.MODE_DFP; |
| break; |
| default: |
| pw.println("Invalid mode: " + args[2]); |
| return; |
| } |
| final int powerRole; |
| final boolean canChangePowerRole = args[3].endsWith("?"); |
| switch (canChangePowerRole ? removeLastChar(args[3]) : args[3]) { |
| case "source": |
| powerRole = UsbPort.POWER_ROLE_SOURCE; |
| break; |
| case "sink": |
| powerRole = UsbPort.POWER_ROLE_SINK; |
| break; |
| default: |
| pw.println("Invalid power role: " + args[3]); |
| return; |
| } |
| final int dataRole; |
| final boolean canChangeDataRole = args[4].endsWith("?"); |
| switch (canChangeDataRole ? removeLastChar(args[4]) : args[4]) { |
| case "host": |
| dataRole = UsbPort.DATA_ROLE_HOST; |
| break; |
| case "device": |
| dataRole = UsbPort.DATA_ROLE_DEVICE; |
| break; |
| default: |
| pw.println("Invalid data role: " + args[4]); |
| return; |
| } |
| if (mPortManager != null) { |
| mPortManager.connectSimulatedPort(portId, mode, canChangeMode, |
| powerRole, canChangePowerRole, dataRole, canChangeDataRole, pw); |
| pw.println(); |
| mPortManager.dump(pw); |
| } |
| } else if (args.length == 2 && "disconnect-port".equals(args[0])) { |
| final String portId = args[1]; |
| if (mPortManager != null) { |
| mPortManager.disconnectSimulatedPort(portId, pw); |
| pw.println(); |
| mPortManager.dump(pw); |
| } |
| } else if (args.length == 2 && "remove-port".equals(args[0])) { |
| final String portId = args[1]; |
| if (mPortManager != null) { |
| mPortManager.removeSimulatedPort(portId, pw); |
| pw.println(); |
| mPortManager.dump(pw); |
| } |
| } else if (args.length == 1 && "reset".equals(args[0])) { |
| if (mPortManager != null) { |
| mPortManager.resetSimulation(pw); |
| pw.println(); |
| mPortManager.dump(pw); |
| } |
| } else if (args.length == 1 && "ports".equals(args[0])) { |
| if (mPortManager != null) { |
| mPortManager.dump(pw); |
| } |
| } else { |
| pw.println("Dump current USB state or issue command:"); |
| pw.println(" ports"); |
| pw.println(" set-port-roles <id> <source|sink|no-power> <host|device|no-data>"); |
| pw.println(" add-port <id> <ufp|dfp|dual|none>"); |
| pw.println(" connect-port <id> <ufp|dfp><?> <source|sink><?> <host|device><?>"); |
| pw.println(" (add ? suffix if mode, power role, or data role can be changed)"); |
| pw.println(" disconnect-port <id>"); |
| pw.println(" remove-port <id>"); |
| pw.println(" reset"); |
| pw.println(); |
| pw.println("Example USB type C port role switch:"); |
| pw.println(" dumpsys usb set-port-roles \"default\" source device"); |
| pw.println(); |
| pw.println("Example USB type C port simulation with full capabilities:"); |
| pw.println(" dumpsys usb add-port \"matrix\" dual"); |
| pw.println(" dumpsys usb connect-port \"matrix\" ufp? sink? device?"); |
| pw.println(" dumpsys usb ports"); |
| pw.println(" dumpsys usb disconnect-port \"matrix\""); |
| pw.println(" dumpsys usb remove-port \"matrix\""); |
| pw.println(" dumpsys usb reset"); |
| pw.println(); |
| pw.println("Example USB type C port where only power role can be changed:"); |
| pw.println(" dumpsys usb add-port \"matrix\" dual"); |
| pw.println(" dumpsys usb connect-port \"matrix\" dfp source? host"); |
| pw.println(" dumpsys usb reset"); |
| pw.println(); |
| pw.println("Example USB OTG port where id pin determines function:"); |
| pw.println(" dumpsys usb add-port \"matrix\" dual"); |
| pw.println(" dumpsys usb connect-port \"matrix\" dfp source host"); |
| pw.println(" dumpsys usb reset"); |
| pw.println(); |
| pw.println("Example USB device-only port:"); |
| pw.println(" dumpsys usb add-port \"matrix\" ufp"); |
| pw.println(" dumpsys usb connect-port \"matrix\" ufp sink device"); |
| pw.println(" dumpsys usb reset"); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| private static String removeLastChar(String value) { |
| return value.substring(0, value.length() - 1); |
| } |
| } |
