客户问题

chmod 0666 /sys/kernel/debug/usb/23000000.usb/mode

write /sys/kernel/debug/usb/23000000.usb/mode device

+ <!-- add by rpdzkj for config usb host or device mode -->

<activity

android:name="Settings$UsbHostDeviceSettingsActivity"

android:label="@string/usb_host_device_manager"

android:exported="true"

android:theme="@style/Theme.SubSettings"

android:enabled="true">

<intent-filter android:priority="1">

<action android:name="android.settings.SCREENSHOT_SETTINGS" />

<category android:name="android.intent.category.DEFAULT" />

</intent-filter>

<intent-filter android:priority="60">

<action android:name="android.intent.action.MAIN" />

<category android:name="com.android.settings.SHORTCUT" />

</intent-filter>

<meta-data android:name="com.android.settings.FRAGMENT_CLASS"

android:value="com.android.settings.UsbHostDeviceSetting" />

<meta-data android:name="com.android.settings.PRIMARY_PROFILE_CONTROLLED"

android:value="true" />

</activity>

<vector xmlns:android="http://schemas.android.com/apk/res/android"

android:width="24dp"

android:height="24dp"

android:viewportWidth="24"

android:viewportHeight="24"

android:tint="?attr/colorControlNormal">

<path

android:fillColor="@android:color/white"

android:pathData="M12,21.55Q11.275,21.55 10.762,21.038Q10.25,20.525 10.25,19.8Q10.25,19.3 10.525,18.888Q10.8,18.475 11.25,18.25V15.75H8.25Q7.5,15.75 6.975,15.225Q6.45,14.7 6.45,13.95V11.75Q6,11.55 5.725,11.15Q5.45,10.75 5.45,10.2Q5.45,9.475 5.963,8.962Q6.475,8.45 7.2,8.45Q7.925,8.45 8.438,8.962Q8.95,9.475 8.95,10.2Q8.95,10.75 8.663,11.137Q8.375,11.525 7.95,11.75V13.95Q7.95,14.05 8.037,14.15Q8.125,14.25 8.25,14.25H11.25V6.125H9.5L12,2.8L14.5,6.125H12.75V14.25H15.75Q15.875,14.25 15.963,14.15Q16.05,14.05 16.05,13.95V11.95H15.05V8.45H18.55V11.95H17.55V13.95Q17.55,14.7 17.025,15.225Q16.5,15.75 15.75,15.75H12.75V18.25Q13.225,18.475 13.488,18.888Q13.75,19.3 13.75,19.8Q13.75,20.525 13.238,21.038Q12.725,21.55 12,21.55Z"/>

</vector>

<!-- add by rpdzkj for config usb host or device mode -->

<string-array name="usb_function_location">

<item>连接外部设备</item>

<item>连接电脑</item>

</string-array>

<!-- add end -->

<!-- add by rpdzkj for config usb host or device mode -->

<string name="otg">OTG 模式</string>

<string name="header_category_otg">OTG模式</string>

<string name="usb_host_device_manager">OTG模式</string>

<string name="otg_summary">"设置OTG口模式，默认device"</string>

<!-- end -->

<!-- add by rpdzkj for config usb host or device mode -->

<string-array name="usb_function_location">

<item>Connect external Device</item>

<item>Connect computer</item>

</string-array>

<string-array name="usb_function_location_values">

<item>host</item>

<item>device</item>

</string-array>

<!-- end -->

<string name="menu_key_otg" translatable="false">top_level_otg</string>

<!-- add by rpdzkj for config usb host or device mode -->

<string name="otg">OTG Mode</string>

<string name="usb_host_device_manager">Usb Mode</string>

<string name="header_category_otg">OTG Mode</string>

<string name="otg_summary">Set mode for OTG</string>

<string name="help_url_otg" translatable="false"></string>

<!-- end -->

<!-- add by rpdzkj for config usb host or device mode -->

<com.android.settings.widget.HomepagePreference

android:fragment="com.android.settings.UsbHostDeviceSetting"

android:icon="@drawable/ic_otg"

android:key="top_level_otg"

android:order="20"

android:title="@string/header_category_otg"

android:summary="@string/otg_summary"/>

<!-- end -->

<?xml version="1.0" encoding="utf-8"?>

<PreferenceScreen

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:settings="http://schemas.android.com/apk/res-auto"

android:title="@string/otg"

settings:keywords="@string/otg">

<ListPreference

android:title="@string/otg"

android:entries="@array/usb_function_location"

android:entryValues="@array/usb_function_location_values"

android:key="usb_mode"

android:persistent="true"/>

</PreferenceScreen>

public static class UsbHostDeviceSettingsActivity extends SettingsActivity { /* empty */ } //add by rpdzkj for config usb host or device mode

//add by rpdzkj yang for config usb host or device mode

somethingChanged = setTileEnabled(changedList, new ComponentName(packageName,

Settings.UsbHostDeviceSettingsActivity.class.getName()),

true, isAdmin)

|| somethingChanged;

//end

package com.android.settings;

import static android.content.Context.MODE_PRIVATE;

import android.content.Context;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.os.Handler;

import android.util.Log;

import android.widget.Toast;

import androidx.preference.ListPreference;

import androidx.preference.Preference;

import androidx.preference.Preference.OnPreferenceChangeListener;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.IOException;

public class UsbHostDeviceSetting extends SettingsPreferenceFragment implements OnPreferenceChangeListener {

/**

* Called when the activity is first created.

*/

private static final String KEY_USB_MODE_LOCATION = "usb_mode";

private static final String RK3576_OTG_CTRL_PATH = "/sys/kernel/debug/usb/23000000.usb/mode";

private static final String MODEL_PATH = "/proc/device-tree/compatible";

private static final String TAG = "UsbHostDeviceDebug";

private ListPreference mUsbMode;

private Context mContext;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

addPreferencesFromResource(R.xml.usb_host_device);

mContext = getActivity();

mUsbMode = (ListPreference) findPreference(KEY_USB_MODE_LOCATION);

mUsbMode.setOnPreferenceChangeListener(this);

String currentMode = readFileValue(getCtrlPath());

updateSummary(currentMode);

}

private String getCtrlPath() {

String platform = readFileValue(MODEL_PATH);

String ctrlPath;

if ("".equals(platform)) return "";

if (platform.contains("3576")) {

ctrlPath = RK3576_OTG_CTRL_PATH;

} else {

//do nothing

Log.e(TAG, platform + ": otg mode switch not adaptation! should not be happened!!");

ctrlPath = "";

}

return ctrlPath;

}

@Override

public boolean onPreferenceChange(Preference preference, Object newValue) {

// TODO Auto-generated method stub

if (preference == mUsbMode) {

String platform = readFileValue(MODEL_PATH);

String ctrlPath, modeString;

String mode = (String) newValue;

if ("".equals(platform)) return true;

if (platform.contains("3576")) {

ctrlPath = RK3576_OTG_CTRL_PATH;

modeString = mode.equals("device") ? "device" : "host";

} else {

//do nothing

Log.e(TAG, platform + ": otg mode switch not adaptation! should not be happened!!");

return true;

}

Log.d(TAG, "usb mode is " + mode);

writeFileWithValue(ctrlPath, modeString.getBytes());

//delay update summary

Handler handler = new Handler();

handler.postDelayed(new Runnable() {

@Override

public void run() {

String currentMode = readFileValue(ctrlPath);

if(currentMode.equals(modeString))

Toast.makeText(mContext, "otg mode switch success!", Toast.LENGTH_SHORT).show();

else

Toast.makeText(mContext, "otg mode switch failed!", Toast.LENGTH_SHORT).show();

updateSummary(currentMode);

}

}, 2000); // 延时的毫秒数

}

return true;

}

private void updateSummary(String mode) {

if (mode.equals("device") || mode.equals("otg")) {

mUsbMode.setSummary("device mode");

} else if (mode.equals("host")){

mUsbMode.setSummary("host mode");

} else {

mUsbMode.setSummary("unknow mode");

}

}

private void writeFileWithValue(String path, byte[] buffer) {

try {

File file = new File(path);

FileOutputStream fos = new FileOutputStream(file);

fos.write(buffer);

fos.close();

} catch (Exception e) {

e.printStackTrace();

}

}

private String readFileValue(String path) {

FileReader fileReader;

String line;

try {

fileReader = new FileReader(path);

BufferedReader bufferedReader = new BufferedReader(fileReader);

line = bufferedReader.readLine();

bufferedReader.close();

return line;

} catch (IOException e) {

e.printStackTrace();

}

return "";

}

@Override

public int getMetricsCategory() {

// TODO Auto-generated method stub

return 5;

}

}

import com.android.settings.UsbHostDeviceSetting; //add by rpdzkj for config usb host or device mode

UserAspectRatioDetails.class.getName(),

UsbHostDeviceSetting.class.getName(), //add by rpdzkj for config usb host or device mode

Settings.UsbHostDeviceSettingsActivity.class.getName(), //add by rpdzkj for config usb host or device mode