diff --git a/tv/cec/1.0/default/Android.bp b/tv/cec/1.0/default/Android.bp
index b4053df..e4c226d 100644
--- a/tv/cec/1.0/default/Android.bp
+++ b/tv/cec/1.0/default/Android.bp
@@ -15,6 +15,7 @@
     srcs: [
         "HdmiCec.cpp",
         "HdmiCecDefault.cpp",
+        "HdmiCecPort.cpp",
     ],
 
     shared_libs: [
diff --git a/tv/cec/1.0/default/HdmiCecDefault.cpp b/tv/cec/1.0/default/HdmiCecDefault.cpp
index 299bcf0..26ccb7d 100644
--- a/tv/cec/1.0/default/HdmiCecDefault.cpp
+++ b/tv/cec/1.0/default/HdmiCecDefault.cpp
@@ -16,19 +16,22 @@
 
 #define LOG_TAG "android.hardware.tv.cec@1.0-impl"
 #include <android-base/logging.h>
+#include <android-base/properties.h>
 
 #include <cutils/properties.h>
+#include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
-#include <linux/cec.h>
 #include <linux/ioctl.h>
 #include <poll.h>
-#include <pthread.h>
-#include <sys/eventfd.h>
-#include <algorithm>
 
 #include "HdmiCecDefault.h"
 
+#define PROPERTY_DEVICE_TYPE "ro.hdmi.device_type"
+#define MIN_PORT_ID 0
+#define MAX_PORT_ID 15
+#define INVALID_PHYSICAL_ADDRESS 0xFFFF
+
 namespace android {
 namespace hardware {
 namespace tv {
@@ -36,24 +39,14 @@
 namespace V1_0 {
 namespace implementation {
 
-// When set to false, all the CEC commands are discarded. True by default after initialization.
-bool mCecEnabled;
-/*
- * When set to false, HAL does not wake up the system upon receiving <Image View On> or
- * <Text View On>. True by default after initialization.
- */
-bool mWakeupEnabled;
-
-int mCecFd;
-int mExitFd;
-pthread_t mEventThread;
-sp<IHdmiCecCallback> mCallback;
+using android::base::GetUintProperty;
+using std::stoi;
+using std::string;
 
 HdmiCecDefault::HdmiCecDefault() {
-    mCecFd = -1;
-    mExitFd = -1;
     mCecEnabled = false;
     mWakeupEnabled = false;
+    mCecControlEnabled = false;
     mCallback = nullptr;
 }
 
@@ -68,8 +61,8 @@
         return Result::FAILURE_INVALID_ARGS;
     }
 
-    struct cec_log_addrs cecLogAddrs;
-    int ret = ioctl(mCecFd, CEC_ADAP_G_LOG_ADDRS, &cecLogAddrs);
+    cec_log_addrs cecLogAddrs;
+    int ret = ioctl(mHdmiCecPorts[MIN_PORT_ID]->mCecFd, CEC_ADAP_G_LOG_ADDRS, &cecLogAddrs);
     if (ret) {
         LOG(ERROR) << "Add logical address failed, Error = " << strerror(errno);
         return Result::FAILURE_BUSY;
@@ -135,27 +128,36 @@
     cecLogAddrs.features[logAddrIndex][0] = 0;
     cecLogAddrs.features[logAddrIndex][1] = 0;
 
-    ret = ioctl(mCecFd, CEC_ADAP_S_LOG_ADDRS, &cecLogAddrs);
-    if (ret) {
-        LOG(ERROR) << "Add logical address failed, Error = " << strerror(errno);
-        return Result::FAILURE_BUSY;
+    // Return failure only if add logical address fails for all the ports
+    Return<Result> result = Result::FAILURE_BUSY;
+    for (int i = 0; i < mHdmiCecPorts.size(); i++) {
+        ret = ioctl(mHdmiCecPorts[i]->mCecFd, CEC_ADAP_S_LOG_ADDRS, &cecLogAddrs);
+        if (ret) {
+            LOG(ERROR) << "Add logical address failed for port " << mHdmiCecPorts[i]->mPortId
+                       << ", Error = " << strerror(errno);
+        } else {
+            result = Result::SUCCESS;
+        }
     }
-    return Result::SUCCESS;
+    return result;
 }
 
 Return<void> HdmiCecDefault::clearLogicalAddress() {
-    struct cec_log_addrs cecLogAddrs;
+    cec_log_addrs cecLogAddrs;
     memset(&cecLogAddrs, 0, sizeof(cecLogAddrs));
-    int ret = ioctl(mCecFd, CEC_ADAP_S_LOG_ADDRS, &cecLogAddrs);
-    if (ret) {
-        LOG(ERROR) << "Clear logical Address failed, Error = " << strerror(errno);
+    for (int i = 0; i < mHdmiCecPorts.size(); i++) {
+        int ret = ioctl(mHdmiCecPorts[i]->mCecFd, CEC_ADAP_S_LOG_ADDRS, &cecLogAddrs);
+        if (ret) {
+            LOG(ERROR) << "Clear logical Address failed for port " << mHdmiCecPorts[i]->mPortId
+                       << ", Error = " << strerror(errno);
+        }
     }
     return Void();
 }
 
 Return<void> HdmiCecDefault::getPhysicalAddress(getPhysicalAddress_cb callback) {
     uint16_t addr;
-    int ret = ioctl(mCecFd, CEC_ADAP_G_PHYS_ADDR, &addr);
+    int ret = ioctl(mHdmiCecPorts[MIN_PORT_ID]->mCecFd, CEC_ADAP_G_PHYS_ADDR, &addr);
     if (ret) {
         LOG(ERROR) << "Get physical address failed, Error = " << strerror(errno);
         callback(Result::FAILURE_INVALID_STATE, addr);
@@ -170,7 +172,7 @@
         return SendMessageResult::FAIL;
     }
 
-    struct cec_msg cecMsg;
+    cec_msg cecMsg;
     memset(&cecMsg, 0, sizeof(cec_msg));
 
     int initiator = static_cast<cec_logical_address_t>(message.initiator);
@@ -182,27 +184,25 @@
     }
     cecMsg.len = message.body.size() + 1;
 
-    int ret = ioctl(mCecFd, CEC_TRANSMIT, &cecMsg);
+    // Return failure only if send message fails for all the ports
+    Return<SendMessageResult> result = SendMessageResult::FAIL;
+    for (int i = 0; i < mHdmiCecPorts.size(); i++) {
+        int ret = ioctl(mHdmiCecPorts[i]->mCecFd, CEC_TRANSMIT, &cecMsg);
 
-    if (ret) {
-        LOG(ERROR) << "Send message failed, Error = " << strerror(errno);
-        return SendMessageResult::FAIL;
-    }
+        if (ret) {
+            LOG(ERROR) << "Send message failed, Error = " << strerror(errno);
+            continue;
+        }
 
-    if (cecMsg.tx_status != CEC_TX_STATUS_OK) {
-        LOG(ERROR) << "Send message tx_status = " << cecMsg.tx_status;
-    }
+        if (cecMsg.tx_status != CEC_TX_STATUS_OK) {
+            LOG(ERROR) << "Send message tx_status = " << cecMsg.tx_status;
+        }
 
-    switch (cecMsg.tx_status) {
-        case CEC_TX_STATUS_OK:
-            return SendMessageResult::SUCCESS;
-        case CEC_TX_STATUS_ARB_LOST:
-            return SendMessageResult::BUSY;
-        case CEC_TX_STATUS_NACK:
-            return SendMessageResult::NACK;
-        default:
-            return SendMessageResult::FAIL;
+        if (result != SendMessageResult::SUCCESS) {
+            result = getSendMessageResult(cecMsg.tx_status);
+        }
     }
+    return result;
 }
 
 Return<void> HdmiCecDefault::setCallback(const sp<IHdmiCecCallback>& callback) {
@@ -227,19 +227,25 @@
 }
 
 Return<void> HdmiCecDefault::getPortInfo(getPortInfo_cb callback) {
-    uint16_t addr;
-    int ret = ioctl(mCecFd, CEC_ADAP_G_PHYS_ADDR, &addr);
-    if (ret) {
-        LOG(ERROR) << "Get port info failed, Error = " << strerror(errno);
+    hidl_vec<HdmiPortInfo> portInfos(mHdmiCecPorts.size());
+    for (int i = 0; i < mHdmiCecPorts.size(); i++) {
+        uint16_t addr = INVALID_PHYSICAL_ADDRESS;
+        int ret = ioctl(mHdmiCecPorts[i]->mCecFd, CEC_ADAP_G_PHYS_ADDR, &addr);
+        if (ret) {
+            LOG(ERROR) << "Get port info failed for port : " << mHdmiCecPorts[i]->mPortId
+                       << ", Error = " << strerror(errno);
+        }
+        HdmiPortType type = HdmiPortType::INPUT;
+        uint32_t deviceType = GetUintProperty<uint32_t>(PROPERTY_DEVICE_TYPE, CEC_DEVICE_PLAYBACK);
+        if (deviceType != CEC_DEVICE_TV && i == MIN_PORT_ID) {
+            type = HdmiPortType::OUTPUT;
+        }
+        portInfos[i] = {.type = type,
+                        .portId = mHdmiCecPorts[i]->mPortId,
+                        .cecSupported = true,
+                        .arcSupported = false,
+                        .physicalAddress = addr};
     }
-
-    unsigned int type = property_get_int32("ro.hdmi.device_type", CEC_DEVICE_PLAYBACK);
-    hidl_vec<HdmiPortInfo> portInfos(1);
-    portInfos[0] = {.type = (type == CEC_DEVICE_TV ? HdmiPortType::INPUT : HdmiPortType::OUTPUT),
-                    .portId = 1,
-                    .cecSupported = true,
-                    .arcSupported = false,
-                    .physicalAddress = addr};
     callback(portInfos);
     return Void();
 }
@@ -254,7 +260,9 @@
             LOG(DEBUG) << "setOption: WAKEUP: " << value;
             mWakeupEnabled = value;
             break;
-        default:
+        case OptionKey::SYSTEM_CEC_CONTROL:
+            LOG(DEBUG) << "setOption: SYSTEM_CEC_CONTROL: " << value;
+            mCecControlEnabled = value;
             break;
     }
     return Void();
@@ -268,9 +276,9 @@
     return Void();
 }
 
-Return<bool> HdmiCecDefault::isConnected(int32_t /*portId*/) {
+Return<bool> HdmiCecDefault::isConnected(int32_t portId) {
     uint16_t addr;
-    int ret = ioctl(mCecFd, CEC_ADAP_G_PHYS_ADDR, &addr);
+    int ret = ioctl(mHdmiCecPorts[portId]->mCecFd, CEC_ADAP_G_PHYS_ADDR, &addr);
     if (ret) {
         LOG(ERROR) << "Is connected failed, Error = " << strerror(errno);
         return false;
@@ -281,79 +289,70 @@
     return true;
 }
 
-// Initialise the cec file descriptor
+int getPortId(string cecFilename) {
+    int portId = stoi(cecFilename.substr(3));
+    if (portId >= MIN_PORT_ID && portId <= MAX_PORT_ID) {
+        return portId;
+    } else {
+        return -1;
+    }
+}
+
+// Initialise the cec file descriptors
 Return<Result> HdmiCecDefault::init() {
-    const char* path = "/dev/cec0";
-    mCecFd = open(path, O_RDWR);
-    if (mCecFd < 0) {
-        LOG(ERROR) << "Failed to open " << path << ", Error = " << strerror(errno);
-        return Result::FAILURE_NOT_SUPPORTED;
-    }
-    mExitFd = eventfd(0, EFD_NONBLOCK);
-    if (mExitFd < 0) {
-        LOG(ERROR) << "Failed to open eventfd, Error = " << strerror(errno);
-        release();
-        return Result::FAILURE_NOT_SUPPORTED;
+    const char* parentPath = "/dev/";
+    DIR* dir = opendir(parentPath);
+    const char* cecFilename = "cec";
+
+    while (struct dirent* dirEntry = readdir(dir)) {
+        string filename = dirEntry->d_name;
+        if (filename.compare(0, 3, cecFilename, 0, 3) == 0) {
+            int portId = getPortId(filename);
+            if (portId == -1) {
+                continue;
+            }
+            shared_ptr<HdmiCecPort> hdmiCecPort(new HdmiCecPort(portId));
+            string filepath = parentPath + filename;
+            Result result = hdmiCecPort->init(filepath.c_str());
+            if (result != Result::SUCCESS) {
+                continue;
+            }
+            thread eventThread(&HdmiCecDefault::event_thread, this, hdmiCecPort.get());
+            mEventThreads.push_back(std::move(eventThread));
+            mHdmiCecPorts.push_back(std::move(hdmiCecPort));
+        }
     }
 
-    // Ensure the CEC device supports required capabilities
-    struct cec_caps caps = {};
-    int ret = ioctl(mCecFd, CEC_ADAP_G_CAPS, &caps);
-    if (ret) {
-        LOG(ERROR) << "Unable to query cec adapter capabilities, Error = " << strerror(errno);
-        release();
-        return Result::FAILURE_NOT_SUPPORTED;
-    }
-
-    if (!(caps.capabilities & (CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT | CEC_CAP_PASSTHROUGH))) {
-        LOG(ERROR) << "Wrong cec adapter capabilities " << caps.capabilities;
-        release();
-        return Result::FAILURE_NOT_SUPPORTED;
-    }
-
-    uint32_t mode = CEC_MODE_INITIATOR | CEC_MODE_EXCL_FOLLOWER_PASSTHRU;
-    ret = ioctl(mCecFd, CEC_S_MODE, &mode);
-    if (ret) {
-        LOG(ERROR) << "Unable to set initiator mode, Error = " << strerror(errno);
-        release();
-        return Result::FAILURE_NOT_SUPPORTED;
-    }
-
-    /* thread loop for receiving cec messages and hotplug events*/
-    if (pthread_create(&mEventThread, NULL, event_thread, NULL)) {
-        LOG(ERROR) << "Can't create event thread: " << strerror(errno);
-        release();
+    if (mHdmiCecPorts.empty()) {
         return Result::FAILURE_NOT_SUPPORTED;
     }
 
     mCecEnabled = true;
     mWakeupEnabled = true;
+    mCecControlEnabled = true;
     return Result::SUCCESS;
 }
 
 Return<void> HdmiCecDefault::release() {
-    if (mExitFd > 0) {
-        uint64_t tmp = 1;
-        write(mExitFd, &tmp, sizeof(tmp));
-        pthread_join(mEventThread, NULL);
-    }
-    if (mExitFd > 0) {
-        close(mExitFd);
-    }
-    if (mCecFd > 0) {
-        close(mCecFd);
-    }
     mCecEnabled = false;
     mWakeupEnabled = false;
+    mCecControlEnabled = false;
+    for (thread& eventThread : mEventThreads) {
+        if (eventThread.joinable()) {
+            eventThread.join();
+        }
+    }
     setCallback(nullptr);
+    mHdmiCecPorts.clear();
+    mEventThreads.clear();
     return Void();
 }
 
-void* HdmiCecDefault::event_thread(void*) {
+void HdmiCecDefault::event_thread(HdmiCecPort* hdmiCecPort) {
     struct pollfd ufds[3] = {
-            {mCecFd, POLLIN, 0},
-            {mCecFd, POLLERR, 0},
-            {mExitFd, POLLIN, 0},
+            {hdmiCecPort->mCecFd, POLLIN, 0},
+            {hdmiCecPort->mCecFd, POLLERR, 0},
+            {hdmiCecPort->mExitFd, POLLIN, 0},
     };
 
     while (1) {
@@ -372,23 +371,23 @@
         }
 
         if (ufds[1].revents == POLLERR) { /* CEC Event */
-            struct cec_event ev;
-            ret = ioctl(mCecFd, CEC_DQEVENT, &ev);
-
-            if (!mCecEnabled) {
-                continue;
-            }
+            cec_event ev;
+            ret = ioctl(hdmiCecPort->mCecFd, CEC_DQEVENT, &ev);
 
             if (ret) {
                 LOG(ERROR) << "CEC_DQEVENT failed, Error = " << strerror(errno);
                 continue;
             }
 
+            if (!mCecEnabled) {
+                continue;
+            }
+
             if (ev.event == CEC_EVENT_STATE_CHANGE) {
                 if (mCallback != nullptr) {
                     HotplugEvent hotplugEvent{
                             .connected = (ev.state_change.phys_addr != CEC_PHYS_ADDR_INVALID),
-                            .portId = 1};
+                            .portId = hdmiCecPort->mPortId};
                     mCallback->onHotplugEvent(hotplugEvent);
                 } else {
                     LOG(ERROR) << "No event callback for hotplug";
@@ -397,12 +396,8 @@
         }
 
         if (ufds[0].revents == POLLIN) { /* CEC Driver */
-            struct cec_msg msg = {};
-            ret = ioctl(mCecFd, CEC_RECEIVE, &msg);
-
-            if (!mCecEnabled) {
-                continue;
-            }
+            cec_msg msg = {};
+            ret = ioctl(hdmiCecPort->mCecFd, CEC_RECEIVE, &msg);
 
             if (ret) {
                 LOG(ERROR) << "CEC_RECEIVE failed, Error = " << strerror(errno);
@@ -414,11 +409,20 @@
                 continue;
             }
 
+            if (!mCecEnabled) {
+                continue;
+            }
+
             if (!mWakeupEnabled && isWakeupMessage(msg)) {
                 LOG(DEBUG) << "Filter wakeup message";
                 continue;
             }
 
+            if (!mCecControlEnabled && !isTransferableInSleep(msg)) {
+                LOG(DEBUG) << "Filter message in standby mode";
+                continue;
+            }
+
             if (mCallback != nullptr) {
                 size_t length = std::min(msg.len - 1, (uint32_t)MaxLength::MESSAGE_BODY);
                 CecMessage cecMessage{
@@ -435,14 +439,13 @@
             }
         }
     }
-    return NULL;
 }
 
-int HdmiCecDefault::getOpcode(struct cec_msg message) {
-    return (static_cast<uint8_t>(message.msg[1]) & 0xff);
+int HdmiCecDefault::getOpcode(cec_msg message) {
+    return static_cast<uint8_t>(message.msg[1]);
 }
 
-bool HdmiCecDefault::isWakeupMessage(struct cec_msg message) {
+bool HdmiCecDefault::isWakeupMessage(cec_msg message) {
     int opcode = getOpcode(message);
     switch (opcode) {
         case CEC_MESSAGE_TEXT_VIEW_ON:
@@ -453,6 +456,61 @@
     }
 }
 
+bool HdmiCecDefault::isTransferableInSleep(cec_msg message) {
+    int opcode = getOpcode(message);
+    switch (opcode) {
+        case CEC_MESSAGE_ABORT:
+        case CEC_MESSAGE_DEVICE_VENDOR_ID:
+        case CEC_MESSAGE_GET_CEC_VERSION:
+        case CEC_MESSAGE_GET_MENU_LANGUAGE:
+        case CEC_MESSAGE_GIVE_DEVICE_POWER_STATUS:
+        case CEC_MESSAGE_GIVE_DEVICE_VENDOR_ID:
+        case CEC_MESSAGE_GIVE_OSD_NAME:
+        case CEC_MESSAGE_GIVE_PHYSICAL_ADDRESS:
+        case CEC_MESSAGE_REPORT_PHYSICAL_ADDRESS:
+        case CEC_MESSAGE_REPORT_POWER_STATUS:
+        case CEC_MESSAGE_SET_OSD_NAME:
+        case CEC_MESSAGE_DECK_CONTROL:
+        case CEC_MESSAGE_PLAY:
+        case CEC_MESSAGE_IMAGE_VIEW_ON:
+        case CEC_MESSAGE_TEXT_VIEW_ON:
+        case CEC_MESSAGE_SYSTEM_AUDIO_MODE_REQUEST:
+            return true;
+        case CEC_MESSAGE_USER_CONTROL_PRESSED:
+            return isPowerUICommand(message);
+        default:
+            return false;
+    }
+}
+
+int HdmiCecDefault::getFirstParam(cec_msg message) {
+    return static_cast<uint8_t>(message.msg[2]);
+}
+
+bool HdmiCecDefault::isPowerUICommand(cec_msg message) {
+    int uiCommand = getFirstParam(message);
+    switch (uiCommand) {
+        case CEC_OP_UI_CMD_POWER:
+        case CEC_OP_UI_CMD_DEVICE_ROOT_MENU:
+        case CEC_OP_UI_CMD_POWER_ON_FUNCTION:
+            return true;
+        default:
+            return false;
+    }
+}
+
+Return<SendMessageResult> HdmiCecDefault::getSendMessageResult(int tx_status) {
+    switch (tx_status) {
+        case CEC_TX_STATUS_OK:
+            return SendMessageResult::SUCCESS;
+        case CEC_TX_STATUS_ARB_LOST:
+            return SendMessageResult::BUSY;
+        case CEC_TX_STATUS_NACK:
+            return SendMessageResult::NACK;
+        default:
+            return SendMessageResult::FAIL;
+    }
+}
 }  // namespace implementation
 }  // namespace V1_0
 }  // namespace cec
diff --git a/tv/cec/1.0/default/HdmiCecDefault.h b/tv/cec/1.0/default/HdmiCecDefault.h
index c1bb2c7..6574429 100644
--- a/tv/cec/1.0/default/HdmiCecDefault.h
+++ b/tv/cec/1.0/default/HdmiCecDefault.h
@@ -13,9 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-#include <android/hardware/tv/cec/1.0/IHdmiCec.h>
 #include <hardware/hdmi_cec.h>
+#include <linux/cec.h>
+#include <thread>
+#include <vector>
+#include "HdmiCecPort.h"
 
 namespace android {
 namespace hardware {
@@ -24,7 +26,12 @@
 namespace V1_0 {
 namespace implementation {
 
-struct HdmiCecDefault : public IHdmiCec, public hidl_death_recipient {
+using std::shared_ptr;
+using std::thread;
+using std::vector;
+
+class HdmiCecDefault : public IHdmiCec, public hidl_death_recipient {
+  public:
     HdmiCecDefault();
     ~HdmiCecDefault();
     // Methods from ::android::hardware::tv::cec::V1_0::IHdmiCec follow.
@@ -47,11 +54,35 @@
 
     Return<Result> init();
     Return<void> release();
-    static void* event_thread(void*);
-    static int getOpcode(struct cec_msg message);
-    static bool isWakeupMessage(struct cec_msg message);
-};
 
+  private:
+    void event_thread(HdmiCecPort* hdmiCecPort);
+    static int getOpcode(cec_msg message);
+    static int getFirstParam(cec_msg message);
+    static bool isWakeupMessage(cec_msg message);
+    static bool isTransferableInSleep(cec_msg message);
+    static bool isPowerUICommand(cec_msg message);
+    static Return<SendMessageResult> getSendMessageResult(int tx_status);
+
+    vector<thread> mEventThreads;
+    vector<shared_ptr<HdmiCecPort>> mHdmiCecPorts;
+
+    // When set to false, all the CEC commands are discarded. True by default after initialization.
+    bool mCecEnabled;
+    /*
+     * When set to false, HAL does not wake up the system upon receiving <Image View On> or
+     * <Text View On>. True by default after initialization.
+     */
+    bool mWakeupEnabled;
+    /*
+     * Updated when system goes into or comes out of standby mode.
+     * When set to true, Android system is handling CEC commands.
+     * When set to false, microprocessor is handling CEC commands.
+     * True by default after initialization.
+     */
+    bool mCecControlEnabled;
+    sp<IHdmiCecCallback> mCallback;
+};
 }  // namespace implementation
 }  // namespace V1_0
 }  // namespace cec
diff --git a/tv/cec/1.0/default/HdmiCecPort.cpp b/tv/cec/1.0/default/HdmiCecPort.cpp
new file mode 100755
index 0000000..73dda12
--- /dev/null
+++ b/tv/cec/1.0/default/HdmiCecPort.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2021 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 and
+ * limitations under the License.
+ */
+#define LOG_TAG "android.hardware.tv.cec@1.0-impl"
+
+#include <android-base/logging.h>
+#include <errno.h>
+#include <linux/cec.h>
+#include <linux/ioctl.h>
+#include <sys/eventfd.h>
+#include <algorithm>
+
+#include "HdmiCecPort.h"
+
+namespace android {
+namespace hardware {
+namespace tv {
+namespace cec {
+namespace V1_0 {
+namespace implementation {
+
+HdmiCecPort::HdmiCecPort(unsigned int portId) {
+    mPortId = portId;
+    mCecFd = -1;
+    mExitFd = -1;
+}
+
+HdmiCecPort::~HdmiCecPort() {
+    release();
+}
+
+// Initialise the cec file descriptor
+Return<Result> HdmiCecPort::init(const char* path) {
+    mCecFd = open(path, O_RDWR);
+    if (mCecFd < 0) {
+        LOG(ERROR) << "Failed to open " << path << ", Error = " << strerror(errno);
+        return Result::FAILURE_NOT_SUPPORTED;
+    }
+    mExitFd = eventfd(0, EFD_NONBLOCK);
+    if (mExitFd < 0) {
+        LOG(ERROR) << "Failed to open eventfd, Error = " << strerror(errno);
+        release();
+        return Result::FAILURE_NOT_SUPPORTED;
+    }
+
+    // Ensure the CEC device supports required capabilities
+    struct cec_caps caps = {};
+    int ret = ioctl(mCecFd, CEC_ADAP_G_CAPS, &caps);
+    if (ret) {
+        LOG(ERROR) << "Unable to query cec adapter capabilities, Error = " << strerror(errno);
+        release();
+        return Result::FAILURE_NOT_SUPPORTED;
+    }
+
+    if (!(caps.capabilities & (CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT | CEC_CAP_PASSTHROUGH))) {
+        LOG(ERROR) << "Wrong cec adapter capabilities " << caps.capabilities;
+        release();
+        return Result::FAILURE_NOT_SUPPORTED;
+    }
+
+    uint32_t mode = CEC_MODE_INITIATOR | CEC_MODE_EXCL_FOLLOWER_PASSTHRU;
+    ret = ioctl(mCecFd, CEC_S_MODE, &mode);
+    if (ret) {
+        LOG(ERROR) << "Unable to set initiator mode, Error = " << strerror(errno);
+        release();
+        return Result::FAILURE_NOT_SUPPORTED;
+    }
+    return Result::SUCCESS;
+}
+
+Return<void> HdmiCecPort::release() {
+    if (mExitFd > 0) {
+        uint64_t tmp = 1;
+        write(mExitFd, &tmp, sizeof(tmp));
+    }
+    if (mExitFd > 0) {
+        close(mExitFd);
+    }
+    if (mCecFd > 0) {
+        close(mCecFd);
+    }
+    return Void();
+}
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace cec
+}  // namespace tv
+}  // namespace hardware
+}  // namespace android
diff --git a/tv/cec/1.0/default/HdmiCecPort.h b/tv/cec/1.0/default/HdmiCecPort.h
new file mode 100755
index 0000000..2a2fdef
--- /dev/null
+++ b/tv/cec/1.0/default/HdmiCecPort.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 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 and
+ * limitations under the License.
+ */
+#include <android/hardware/tv/cec/1.0/IHdmiCec.h>
+
+namespace android {
+namespace hardware {
+namespace tv {
+namespace cec {
+namespace V1_0 {
+namespace implementation {
+
+class HdmiCecPort {
+  public:
+    HdmiCecPort(unsigned int portId);
+    ~HdmiCecPort();
+    Return<Result> init(const char* path);
+    Return<void> release();
+
+    unsigned int mPortId;
+    int mCecFd;
+    int mExitFd;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace cec
+}  // namespace tv
+}  // namespace hardware
+}  // namespace android