More legacy USB support. (9ad25ef7) · Commits · e / os / android_frameworks_base

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

+4 −1

Original line number	Diff line number	Diff line
		@@ -246,7 +246,10 @@ public class UsbManager {
		}

		private static File getFunctionEnableFile(String function) {
		if((new File("/sys/class/usb_composite/" + function + "/enable")).exists())
		return new File("/sys/class/usb_composite/" + function + "/enable");
		else
		return new File("/sys/devices/platform/android_usb/functions/" + function);
		}

		/**

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

+63 −5

Original line number	Diff line number	Diff line
		@@ -72,6 +72,8 @@ public class UsbService extends IUsbManager.Stub {
		"/sys/class/switch/usb_configuration/state";
		private static final String USB_COMPOSITE_CLASS_PATH =
		"/sys/class/usb_composite";
		private static final String USB_LEGACY_FUNCTIONS_PATH =
		"/sys/devices/platform/android_usb/functions";
		private static final String USB_LEGACY_PATH =
		"/sys/class/switch/usb_mass_storage/state";

		@@ -155,6 +157,29 @@ public class UsbService extends IUsbManager.Stub {
		}

		synchronized (mLock) {
		char[] buffer = new char[1024];
		if((new File(USB_LEGACY_FUNCTIONS_PATH)).exists()) {
		try {
		File[] files = new File(USB_LEGACY_FUNCTIONS_PATH).listFiles();
		for (int i = 0; i < files.length; i++) {
		FileReader reader = new FileReader(files[i]);
		int len = reader.read(buffer, 0, 1024);
		reader.close();
		try {
		int value = Integer.valueOf((new String(buffer, 0, len)).trim()) == 1 ?
		MSG_FUNCTION_ENABLED : MSG_FUNCTION_DISABLED;
		String functionName = files[i].getName();
		Message msg = Message.obtain(mHandler, value);
		msg.obj = functionName;
		mHandler.sendMessage(msg);
		} catch(NumberFormatException nfe){
		Slog.d(TAG, files[i].getName()+" contains non-numeric data");
		}
		}
		} catch (Exception e) {
		Slog.e(TAG, "" , e);
		}
		}
		String name = event.get("SWITCH_NAME");
		String state = event.get("SWITCH_STATE");
		if (name != null && state != null) {
		@@ -264,7 +289,7 @@ public class UsbService extends IUsbManager.Stub {
		FileReader file = new FileReader(USB_LEGACY_PATH);
		int len = file.read(buffer, 0, 1024);
		file.close();
		mConnected = ("online".equals((new String(buffer, 0, len))) ? 1 : 0);
		mConnected = ("online".equals((new String(buffer, 0, len)).trim()) ? 1 : 0);
		mLegacy = true;
		mConfiguration = 0;
		} catch (FileNotFoundException f) {
		@@ -280,9 +305,7 @@ public class UsbService extends IUsbManager.Stub {
		return;
		}

		if (mLegacy) {
		mDisabledFunctions.add(UsbManager.USB_FUNCTION_MASS_STORAGE);
		} else {
		if((new File(USB_COMPOSITE_CLASS_PATH)).exists()){
		// Read initial list of enabled and disabled functions (device mode)
		try {
		File[] files = new File(USB_COMPOSITE_CLASS_PATH).listFiles();
		@@ -314,6 +337,41 @@ public class UsbService extends IUsbManager.Stub {
		Slog.e(TAG, "" , e);
		}
		}
		else if((new File(USB_LEGACY_FUNCTIONS_PATH)).exists()) {
		try {
		File[] files = new File(USB_LEGACY_FUNCTIONS_PATH).listFiles();
		for (int i = 0; i < files.length; i++) {
		FileReader reader = new FileReader(files[i]);
		int len = reader.read(buffer, 0, 1024);
		reader.close();
		try{
		int value = Integer.valueOf((new String(buffer, 0, len)).trim());
		String functionName = files[i].getName();
		if (value == 1) {
		mEnabledFunctions.add(functionName);
		if (UsbManager.USB_FUNCTION_ACCESSORY.equals(functionName)) {
		// The USB accessory driver is on by default, but it might have been
		// enabled before the USB service has initialized.
		inAccessoryMode = true;
		} else if (!UsbManager.USB_FUNCTION_ADB.equals(functionName)) {
		// adb is enabled/disabled automatically by the adbd daemon,
		// so don't treat it as a default function.
		mDefaultFunctions.add(functionName);
		}
		} else {
		mDisabledFunctions.add(functionName);
		}
		}
		catch(NumberFormatException nfe){
		Slog.d(TAG, files[i].getName()+" contains non-numeric data");
		}
		}
		} catch (Exception e) {
		Slog.e(TAG, "" , e);
		}
		}
		else if (mLegacy)
		mDisabledFunctions.add(UsbManager.USB_FUNCTION_MASS_STORAGE);

		// handle the case where an accessory switched the driver to accessory mode
		// before the framework finished booting