public void dump(IndentingPrintWriter pw) {
synchronized (mLock) {
pw.print("USB Port State:");
if (!mSimulatedPorts.isEmpty()) {
pw.print(" (simulation active; end with 'dumpsys usb reset')");
}
pw.println();
if (mPorts.isEmpty()) {
pw.println(" <no ports>");
} else {
for (PortInfo portInfo : mPorts.values()) {
pw.println(" " + portInfo.mUsbPort.getId() + ": " + portInfo);
}
}
}
}
public void resetSimulation(IndentingPrintWriter pw) {
synchronized (mLock) {
pw.println("Removing all simulated ports and ending simulation.");
if (!mSimulatedPorts.isEmpty()) {
mSimulatedPorts.clear();
updatePortsLocked(pw);
}
}
}
private void updatePortsLocked(IndentingPrintWriter pw) {
// Assume all ports are gone unless informed otherwise.
// Kind of pessimistic but simple.
for (int i = mPorts.size(); i-- > 0; ) {
mPorts.valueAt(i).mDisposition = PortInfo.DISPOSITION_REMOVED;
}
// Enumerate all extant ports.
if (!mSimulatedPorts.isEmpty()) {
final int count = mSimulatedPorts.size();
for (int i = 0; i < count; i++) {
final SimulatedPortInfo portInfo = mSimulatedPorts.valueAt(i);
addOrUpdatePortLocked(
portInfo.mPortId,
portInfo.mSupportedModes,
portInfo.mCurrentMode,
portInfo.mCanChangeMode,
portInfo.mCurrentPowerRole,
portInfo.mCanChangePowerRole,
portInfo.mCurrentDataRole,
portInfo.mCanChangeDataRole,
pw);
}
} else if (mHaveKernelSupport) {
final File[] portDirs = new File(SYSFS_CLASS).listFiles();
if (portDirs != null) {
for (File portDir : portDirs) {
if (!portDir.isDirectory()) {
continue;
}
// Parse the sysfs file contents.
final String portId = portDir.getName();
final int supportedModes = readSupportedModes(portDir);
final int currentMode = readCurrentMode(portDir);
final boolean canChangeMode = canChangeMode(portDir);
final int currentPowerRole = readCurrentPowerRole(portDir);
final boolean canChangePowerRole = canChangePowerRole(portDir);
final int currentDataRole = readCurrentDataRole(portDir);
final boolean canChangeDataRole = canChangeDataRole(portDir);
addOrUpdatePortLocked(
portId,
supportedModes,
currentMode,
canChangeMode,
currentPowerRole,
canChangePowerRole,
currentDataRole,
canChangeDataRole,
pw);
}
}
}
// Process the updates.
// Once finished, the list of ports will only contain ports in DISPOSITION_READY.
for (int i = mPorts.size(); i-- > 0; ) {
final PortInfo portInfo = mPorts.valueAt(i);
switch (portInfo.mDisposition) {
case PortInfo.DISPOSITION_ADDED:
handlePortAddedLocked(portInfo, pw);
portInfo.mDisposition = PortInfo.DISPOSITION_READY;
break;
case PortInfo.DISPOSITION_CHANGED:
handlePortChangedLocked(portInfo, pw);
portInfo.mDisposition = PortInfo.DISPOSITION_READY;
break;
case PortInfo.DISPOSITION_REMOVED:
mPorts.removeAt(i);
portInfo.mUsbPortStatus = null; // must do this early
handlePortRemovedLocked(portInfo, pw);
break;
}
}
}