USB: Support for new USB gadget drivers (02e4569b) · Commits · e / os / android_frameworks_base

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

+9 −0

Original line number	Diff line number	Diff line
		@@ -81,4 +81,13 @@ interface IUsbManager

		/* Clears default preferences and permissions for the package */
		void clearDefaults(String packageName);

		/* Sets the current primary USB function. */
		void setPrimaryFunction(String functions);

		/* Sets the default primary USB function. */
		void setDefaultFunction(String functions);

		/* Sets the file path for USB mass storage backing file. */
		void setMassStorageBackingFile(String path);
		}

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

+43 −31

Original line number	Diff line number	Diff line
		@@ -22,12 +22,9 @@ import android.content.Context;
		import android.os.Bundle;
		import android.os.ParcelFileDescriptor;
		import android.os.RemoteException;
		import android.os.SystemProperties;
		import android.util.Log;

		import java.io.File;
		import java.io.FileInputStream;
		import java.io.FileOutputStream;
		import java.io.IOException;
		import java.util.HashMap;

		/**
		@@ -50,7 +47,7 @@ public class UsbManager {
		* This is a sticky broadcast for clients that includes USB connected/disconnected state,
		* <ul>
		* <li> {@link #USB_CONNECTED} boolean indicating whether USB is connected or disconnected.
		* <li> {@link #USB_CONFIGURATION} integer containing current USB configuration
		* <li> {@link #USB_CONFIGURED} boolean indicating whether USB is configured.
		* currently zero if not configured, one for configured.
		* <li> {@link #USB_FUNCTION_MASS_STORAGE} boolean extra indicating whether the
		* mass storage function is enabled
		@@ -128,12 +125,12 @@ public class UsbManager {
		public static final String USB_CONNECTED = "connected";

		/**
		* Integer extra containing currently set USB configuration.
		* Boolean extra indicating whether USB is configured.
		* Used in extras for the {@link #ACTION_USB_STATE} broadcast.
		*
		* {@hide}
		*/
		public static final String USB_CONFIGURATION = "configuration";
		public static final String USB_CONFIGURED = "configured";

		/**
		* Name of the USB mass storage USB function.
		@@ -388,55 +385,70 @@ public class UsbManager {
		}
		}

		private static File getFunctionEnableFile(String function) {
		return new File("/sys/class/usb_composite/" + function + "/enable");
		private static boolean propertyContainsFunction(String property, String function) {
		String functions = SystemProperties.get(property, "");
		int index = functions.indexOf(function);
		if (index < 0) return false;
		if (index > 0 && functions.charAt(index - 1) != ',') return false;
		int charAfter = index + function.length();
		if (charAfter < functions.length() && functions.charAt(charAfter) != ',') return false;
		return true;
		}

		/**
		* Returns true if the specified USB function is supported by the kernel.
		* Note that a USB function maybe supported but disabled.
		* Returns true if the specified USB function is currently enabled.
		*
		* @param function name of the USB function
		* @return true if the USB function is supported.
		* @return true if the USB function is enabled.
		*
		* {@hide}
		*/
		public static boolean isFunctionSupported(String function) {
		return getFunctionEnableFile(function).exists();
		public boolean isFunctionEnabled(String function) {
		return propertyContainsFunction("sys.usb.config", function);
		}

		/**
		* Returns true if the specified USB function is currently enabled.
		* Sets the primary USB function.
		*
		* @param function name of the USB function
		* @return true if the USB function is enabled.
		*
		* {@hide}
		*/
		public static boolean isFunctionEnabled(String function) {
		public void setPrimaryFunction(String function) {
		try {
		FileInputStream stream = new FileInputStream(getFunctionEnableFile(function));
		boolean enabled = (stream.read() == '1');
		stream.close();
		return enabled;
		} catch (IOException e) {
		return false;
		mService.setPrimaryFunction(function);
		} catch (RemoteException e) {
		Log.e(TAG, "RemoteException in setPrimaryFunction", e);
		}
		}

		/**
		* Enables or disables a USB function.
		* Sets the default primary USB function.
		*
		* @param function name of the USB function
		*
		* {@hide}
		*/
		public static boolean setFunctionEnabled(String function, boolean enable) {
		public void setDefaultFunction(String function) {
		try {
		FileOutputStream stream = new FileOutputStream(getFunctionEnableFile(function));
		stream.write(enable ? '1' : '0');
		stream.close();
		return true;
		} catch (IOException e) {
		return false;
		mService.setDefaultFunction(function);
		} catch (RemoteException e) {
		Log.e(TAG, "RemoteException in setDefaultFunction", e);
		}
		}

		/**
		* Sets the file path for USB mass storage backing file.
		*
		* @param path backing file path
		*
		* {@hide}
		*/
		public void setMassStorageBackingFile(String path) {
		try {
		mService.setMassStorageBackingFile(path);
		} catch (RemoteException e) {
		Log.e(TAG, "RemoteException in setDefaultFunction", e);
		}
		}
		}

services/java/com/android/server/SystemServer.java

+2 −2

Original line number	Diff line number	Diff line
		@@ -406,8 +406,8 @@ class ServerThread extends Thread {
		}

		try {
		Slog.i(TAG, "USB Observer");
		// Listen for USB changes
		Slog.i(TAG, "USB Service");
		// Manage USB host and device support
		usb = new UsbService(context);
		ServiceManager.addService(Context.USB_SERVICE, usb);
		} catch (Throwable e) {

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

+357 −305

File changed.

Preview size limit exceeded, changes collapsed.

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

+29 −2

Original line number	Diff line number	Diff line
		@@ -50,7 +50,7 @@ public class UsbService extends IUsbManager.Stub {
		if (pm.hasSystemFeature(PackageManager.FEATURE_USB_HOST)) {
		mHostManager = new UsbHostManager(context, mSettingsManager);
		}
		if (new File("/sys/class/usb_composite").exists()) {
		if (new File("/sys/class/android_usb").exists()) {
		mDeviceManager = new UsbDeviceManager(context, mSettingsManager);
		}
		}
		@@ -92,7 +92,7 @@ public class UsbService extends IUsbManager.Stub {
		/* opens the currently attached USB accessory (device mode) */
		public ParcelFileDescriptor openAccessory(UsbAccessory accessory) {
		if (mDeviceManager != null) {
		return openAccessory(accessory);
		return mDeviceManager.openAccessory(accessory);
		} else {
		return null;
		}
		@@ -146,6 +146,33 @@ public class UsbService extends IUsbManager.Stub {
		mSettingsManager.clearDefaults(packageName);
		}

		public void setPrimaryFunction(String function) {
		mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null);
		if (mDeviceManager != null) {
		mDeviceManager.setPrimaryFunction(function);
		} else {
		throw new IllegalStateException("USB device mode not supported");
		}
		}

		public void setDefaultFunction(String function) {
		mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null);
		if (mDeviceManager != null) {
		mDeviceManager.setDefaultFunction(function);
		} else {
		throw new IllegalStateException("USB device mode not supported");
		}
		}

		public void setMassStorageBackingFile(String path) {
		mContext.enforceCallingOrSelfPermission(android.Manifest.permission.MANAGE_USB, null);
		if (mDeviceManager != null) {
		mDeviceManager.setMassStorageBackingFile(path);
		} else {
		throw new IllegalStateException("USB device mode not supported");
		}
		}

		@Override
		public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
		if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)