From a7f3315333c1a79259a763c6542a6cd71855b357 Mon Sep 17 00:00:00 2001
From: Stefan Saraev <stefan@saraev.ca>
Date: Thu, 7 May 2015 11:35:04 +0300
Subject: [PATCH] imx support

note. I am NOT the author of the patch. just rebased it
---
 include/cectypes.h                                 |  14 +-
 src/libcec/CECTypeUtils.h                          |   2 +
 src/libcec/adapter/AdapterFactory.cpp              |  29 +-
 src/libcec/adapter/IMX/AdapterMessageQueue.h       | 134 +++++++++
 .../adapter/IMX/IMXCECAdapterCommunication.cpp     | 328 +++++++++++++++++++++
 .../adapter/IMX/IMXCECAdapterCommunication.h       | 119 ++++++++
 src/libcec/adapter/IMX/IMXCECAdapterDetection.cpp  |  42 +++
 src/libcec/adapter/IMX/IMXCECAdapterDetection.h    |  36 +++
 src/libcec/cmake/CheckPlatformSupport.cmake        |  10 +
 src/libcec/cmake/DisplayPlatformSupport.cmake      |   6 +
 src/libcec/env.h.in                                |   3 +
 11 files changed, 720 insertions(+), 3 deletions(-)
 create mode 100644 src/libcec/adapter/IMX/AdapterMessageQueue.h
 create mode 100644 src/libcec/adapter/IMX/IMXCECAdapterCommunication.cpp
 create mode 100644 src/libcec/adapter/IMX/IMXCECAdapterCommunication.h
 create mode 100644 src/libcec/adapter/IMX/IMXCECAdapterDetection.cpp
 create mode 100644 src/libcec/adapter/IMX/IMXCECAdapterDetection.h

diff --git a/include/cectypes.h b/include/cectypes.h
index acff259..0cfee8c 100644
--- a/include/cectypes.h
+++ b/include/cectypes.h
@@ -309,6 +309,17 @@ namespace CEC {
 #define CEC_EXYNOS_VIRTUAL_COM		"Exynos"
 
 /*!
+ * the path to use for the i.MX CEC wire
+ */
+#define CEC_IMX_PATH		"/dev/mxc_hdmi_cec"
+
+/*!
+ * the name of the virtual COM port to use for the i.MX CEC wire
+ */
+#define CEC_IMX_VIRTUAL_COM		"i.MX"
+
+
+/*!
  * Mimimum client version
  */
 #define CEC_MIN_LIB_VERSION          3
@@ -876,7 +887,8 @@ typedef enum cec_adapter_type
   ADAPTERTYPE_P8_DAUGHTERBOARD = 0x2,
   ADAPTERTYPE_RPI              = 0x100,
   ADAPTERTYPE_TDA995x          = 0x200,
-  ADAPTERTYPE_EXYNOS           = 0x300
+  ADAPTERTYPE_EXYNOS           = 0x300,
+  ADAPTERTYPE_IMX              = 0x400
 } cec_adapter_type;
 
 /** force exporting through swig */
diff --git a/src/libcec/CECTypeUtils.h b/src/libcec/CECTypeUtils.h
index fd8046a..48cb215 100644
--- a/src/libcec/CECTypeUtils.h
+++ b/src/libcec/CECTypeUtils.h
@@ -765,6 +765,8 @@ namespace CEC
         return "Raspberry Pi";
       case ADAPTERTYPE_TDA995x:
         return "TDA995x";
+      case ADAPTERTYPE_IMX:
+        return "i.MX";
       default:
         return "unknown";
       }
diff --git a/src/libcec/adapter/AdapterFactory.cpp b/src/libcec/adapter/AdapterFactory.cpp
index da05725..92e378b 100644
--- a/src/libcec/adapter/AdapterFactory.cpp
+++ b/src/libcec/adapter/AdapterFactory.cpp
@@ -58,6 +58,11 @@
 #include "Exynos/ExynosCECAdapterCommunication.h"
 #endif
 
+#if defined(HAVE_IMX_API)
+#include "IMX/IMXCECAdapterDetection.h"
+#include "IMX/IMXCECAdapterCommunication.h"
+#endif
+
 using namespace CEC;
 
 int8_t CAdapterFactory::FindAdapters(cec_adapter *deviceList, uint8_t iBufSize, const char *strDevicePath /* = NULL */)
@@ -127,7 +132,22 @@ int8_t CAdapterFactory::DetectAdapters(cec_adapter_descriptor *deviceList, uint8
 #endif
 
 
-#if !defined(HAVE_RPI_API) && !defined(HAVE_P8_USB) && !defined(HAVE_TDA995X_API)
+
+#if defined(HAVE_IMX_API)
+  if (iAdaptersFound < iBufSize && CIMXCECAdapterDetection::FindAdapter() &&
+      (!strDevicePath || !strcmp(strDevicePath, CEC_IMX_VIRTUAL_COM)))
+  {
+    snprintf(deviceList[iAdaptersFound].strComPath, sizeof(deviceList[iAdaptersFound].strComPath), CEC_IMX_PATH);
+    snprintf(deviceList[iAdaptersFound].strComName, sizeof(deviceList[iAdaptersFound].strComName), CEC_IMX_VIRTUAL_COM);
+    deviceList[iAdaptersFound].iVendorId = IMX_ADAPTER_VID;
+    deviceList[iAdaptersFound].iProductId = IMX_ADAPTER_PID;
+    deviceList[iAdaptersFound].adapterType = ADAPTERTYPE_IMX;
+    iAdaptersFound++;
+  }
+#endif
+
+
+#if !defined(HAVE_RPI_API) && !defined(HAVE_P8_USB) && !defined(HAVE_TDA995X_API) && !defined(HAVE_IMX_API)
 #error "libCEC doesn't have support for any type of adapter. please check your build system or configuration"
 #endif
 
@@ -151,11 +171,16 @@ IAdapterCommunication *CAdapterFactory::GetInstance(const char *strPort, uint16_
     return new CRPiCECAdapterCommunication(m_lib->m_cec);
 #endif
 
+#if defined(HAVE_IMX_API)
+  if (!strcmp(strPort, CEC_IMX_VIRTUAL_COM))
+    return new CIMXCECAdapterCommunication(m_lib->m_cec);
+#endif
+
 #if defined(HAVE_P8_USB)
   return new CUSBCECAdapterCommunication(m_lib->m_cec, strPort, iBaudRate);
 #endif
 
-#if !defined(HAVE_RPI_API) && !defined(HAVE_P8_USB) && !defined(HAVE_TDA995X_API) && !defined(HAVE_EXYNOS_API)
+#if !defined(HAVE_RPI_API) && !defined(HAVE_P8_USB) && !defined(HAVE_TDA995X_API) && !defined(HAVE_EXYNOS_API) && !defined(HAVE_IMX_API)
   return NULL;
 #endif
 }
diff --git a/src/libcec/adapter/IMX/AdapterMessageQueue.h b/src/libcec/adapter/IMX/AdapterMessageQueue.h
new file mode 100644
index 0000000..af6742c
--- /dev/null
+++ b/src/libcec/adapter/IMX/AdapterMessageQueue.h
@@ -0,0 +1,134 @@
+#pragma once
+/*
+ * This file is part of the libCEC(R) library.
+ *
+ * libCEC(R) is Copyright (C) 2011-2013 Pulse-Eight Limited.  All rights reserved.
+ * libCEC(R) is an original work, containing original code.
+ *
+ * libCEC(R) is a trademark of Pulse-Eight Limited.
+ *
+ * This program is dual-licensed; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *
+ * Alternatively, you can license this library under a commercial license,
+ * please contact Pulse-Eight Licensing for more information.
+ *
+ * For more information contact:
+ * Pulse-Eight Licensing       <license@pulse-eight.com>
+ *     http://www.pulse-eight.com/
+ *     http://www.pulse-eight.net/
+ */
+
+#include "platform/threads/mutex.h"
+
+namespace CEC
+{
+  using namespace PLATFORM;
+  
+  class CAdapterMessageQueueEntry
+  {
+  public:
+    CAdapterMessageQueueEntry(const cec_command &command)
+       : m_bWaiting(true), m_retval((uint32_t)-1), m_bSucceeded(false)
+    {
+      m_hash = hashValue(
+    	uint32_t(command.opcode_set ? command.opcode : CEC_OPCODE_NONE),
+        command.initiator, command.destination);
+    }
+    
+    virtual ~CAdapterMessageQueueEntry(void) {}
+
+    /*!
+     * @brief Query result from worker thread
+     */
+    uint32_t Result() const
+    {
+      return m_retval;
+    }
+    
+    /*!
+     * @brief Signal waiting threads
+     */
+    void Broadcast(void)
+    {
+      CLockObject lock(m_mutex);
+      m_condition.Broadcast();
+    }
+
+    /*!
+     * @brief Signal waiting thread(s) when message matches this entry
+     */
+    bool CheckMatch(uint32_t opcode, cec_logical_address initiator, 
+                    cec_logical_address destination, uint32_t response)
+    {
+      uint32_t hash = hashValue(opcode, initiator, destination);
+      
+      if (hash == m_hash)
+      {
+        CLockObject lock(m_mutex);
+
+        m_retval = response;
+        m_bSucceeded = true;
+        m_condition.Signal();
+        return true;
+      }
+      
+      return false;
+    }
+
+    /*!
+     * @brief Wait for a response to this command.
+     * @param iTimeout The timeout to use while waiting.
+     * @return True when a response was received before the timeout passed, false otherwise.
+     */
+    bool Wait(uint32_t iTimeout)
+    {
+      CLockObject lock(m_mutex);
+      
+      bool bReturn = m_bSucceeded ? true : m_condition.Wait(m_mutex, m_bSucceeded, iTimeout);
+      m_bWaiting = false;
+      return bReturn;
+    }
+
+    /*!
+     * @return True while a thread is waiting for a signal or isn't waiting yet, false otherwise.
+     */
+    bool IsWaiting(void)
+    {
+      CLockObject lock(m_mutex);
+      return m_bWaiting;
+    }
+
+    /*!
+     * @return Hash value for given cec_command
+     */
+    static uint32_t hashValue(uint32_t opcode, 
+                              cec_logical_address initiator,  
+                              cec_logical_address destination)
+    {
+      return 1 | ((uint32_t)initiator << 8) | 
+             ((uint32_t)destination << 16) | ((uint32_t)opcode << 16);
+    }
+    
+  private:    
+    bool                         m_bWaiting;     /**< true while a thread is waiting or when it hasn't started waiting yet */
+    PLATFORM::CCondition<bool>   m_condition;    /**< the condition to wait on */
+    PLATFORM::CMutex             m_mutex;        /**< mutex for changes to this class */
+    uint32_t                  	 m_hash;
+    uint32_t                     m_retval;
+    bool                         m_bSucceeded;
+  };
+ 
+};
diff --git a/src/libcec/adapter/IMX/IMXCECAdapterCommunication.cpp b/src/libcec/adapter/IMX/IMXCECAdapterCommunication.cpp
new file mode 100644
index 0000000..2daa8cb
--- /dev/null
+++ b/src/libcec/adapter/IMX/IMXCECAdapterCommunication.cpp
@@ -0,0 +1,328 @@
+/*
+ * This file is part of the libCEC(R) library.
+ *
+ * libCEC(R) is Copyright (C) 2011-2013 Pulse-Eight Limited.  All rights reserved.
+ * libCEC(R) is an original work, containing original code.
+ *
+ * libCEC(R) is a trademark of Pulse-Eight Limited.
+ * 
+ * IMX adpater port is Copyright (C) 2013 by Stephan Rafin
+ * 
+ * You can redistribute this file and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *
+ */
+
+#include "env.h"
+
+#if defined(HAVE_IMX_API)
+#include "IMXCECAdapterCommunication.h"
+
+#include "CECTypeUtils.h"
+#include "LibCEC.h"
+#include "platform/sockets/cdevsocket.h"
+#include "platform/util/StdString.h"
+#include "platform/util/buffer.h"
+
+/*
+ * Ioctl definitions from kernel header
+ */
+#define HDMICEC_IOC_MAGIC  'H'
+#define HDMICEC_IOC_SETLOGICALADDRESS _IOW(HDMICEC_IOC_MAGIC,  1, unsigned char)
+#define HDMICEC_IOC_STARTDEVICE _IO(HDMICEC_IOC_MAGIC,  2)
+#define HDMICEC_IOC_STOPDEVICE  _IO(HDMICEC_IOC_MAGIC,  3)
+#define HDMICEC_IOC_GETPHYADDRESS _IOR(HDMICEC_IOC_MAGIC,  4, unsigned char[4])
+
+#define MAX_CEC_MESSAGE_LEN 17
+
+#define MESSAGE_TYPE_RECEIVE_SUCCESS 1
+#define MESSAGE_TYPE_NOACK 2
+#define MESSAGE_TYPE_DISCONNECTED 3
+#define MESSAGE_TYPE_CONNECTED 4
+#define MESSAGE_TYPE_SEND_SUCCESS 5
+
+typedef struct hdmi_cec_event{
+  int event_type;
+  int msg_len;
+  unsigned char msg[MAX_CEC_MESSAGE_LEN];
+}hdmi_cec_event;
+
+
+using namespace std;
+using namespace CEC;
+using namespace PLATFORM;
+
+#include "AdapterMessageQueue.h"
+
+#define LIB_CEC m_callback->GetLib()
+
+// these are defined in nxp private header file
+#define CEC_MSG_SUCCESS                 0x00	/*Message transmisson Succeed*/
+#define CEC_CSP_OFF_STATE               0x80	/*CSP in Off State*/
+#define CEC_BAD_REQ_SERVICE             0x81	/*Bad .req service*/
+#define CEC_MSG_FAIL_UNABLE_TO_ACCESS	0x82	/*Message transmisson failed: Unable to access CEC line*/
+#define CEC_MSG_FAIL_ARBITRATION_ERROR	0x83	/*Message transmisson failed: Arbitration error*/
+#define CEC_MSG_FAIL_BIT_TIMMING_ERROR	0x84	/*Message transmisson failed: Bit timming error*/
+#define CEC_MSG_FAIL_DEST_NOT_ACK       0x85	/*Message transmisson failed: Destination Address not aknowledged*/
+#define CEC_MSG_FAIL_DATA_NOT_ACK       0x86	/*Message transmisson failed: Databyte not acknowledged*/
+
+
+CIMXCECAdapterCommunication::CIMXCECAdapterCommunication(IAdapterCommunicationCallback *callback) :
+    IAdapterCommunication(callback)/*,
+    m_bLogicalAddressChanged(false)*/
+{ 
+  CLockObject lock(m_mutex);
+
+  m_iNextMessage = 0;
+  //m_logicalAddresses.Clear();
+  m_logicalAddress = CECDEVICE_UNKNOWN;
+  m_bLogicalAddressRegistered = false;
+  m_bInitialised = false;
+  m_dev = new CCDevSocket(CEC_IMX_PATH);
+}
+
+CIMXCECAdapterCommunication::~CIMXCECAdapterCommunication(void)
+{
+  Close();
+
+  CLockObject lock(m_mutex);
+  delete m_dev;
+  m_dev = 0;
+}
+
+bool CIMXCECAdapterCommunication::IsOpen(void)
+{
+  return IsInitialised() && m_dev->IsOpen();
+}
+
+bool CIMXCECAdapterCommunication::Open(uint32_t iTimeoutMs, bool UNUSED(bSkipChecks), bool bStartListening)
+{
+  if (m_dev->Open(iTimeoutMs))
+  {
+    if (!bStartListening || CreateThread()) {
+      if (m_dev->Ioctl(HDMICEC_IOC_STARTDEVICE, NULL) == 0) {
+         m_bInitialised = true;
+         return true;
+      }
+      LIB_CEC->AddLog(CEC_LOG_ERROR, "%s: Unable to start device\n", __func__);
+    }
+    m_dev->Close();
+  }
+
+  return false;
+}
+
+
+void CIMXCECAdapterCommunication::Close(void)
+{
+  StopThread(0);
+
+  CLockObject lock(m_mutex);
+  if (!m_bInitialised) {
+    return;
+  }
+  if (m_dev->Ioctl(HDMICEC_IOC_STOPDEVICE, NULL) != 0) {
+    LIB_CEC->AddLog(CEC_LOG_ERROR, "%s: Unable to stop device\n", __func__);
+  }
+  m_dev->Close();
+  m_bInitialised = false;
+}
+
+
+std::string CIMXCECAdapterCommunication::GetError(void) const
+{
+  std::string strError(m_strError);
+  return strError;
+}
+
+
+cec_adapter_message_state CIMXCECAdapterCommunication::Write(
+  const cec_command &data, bool &UNUSED(bRetry), uint8_t UNUSED(iLineTimeout), bool UNUSED(bIsReply))
+{
+  //cec_frame frame;
+  unsigned char message[MAX_CEC_MESSAGE_LEN];
+  int msg_len = 1;
+  cec_adapter_message_state rc = ADAPTER_MESSAGE_STATE_ERROR;
+
+  if ((size_t)data.parameters.size + data.opcode_set + 1 > sizeof(message))
+  {
+    LIB_CEC->AddLog(CEC_LOG_ERROR, "%s: data size too large !", __func__);
+    return ADAPTER_MESSAGE_STATE_ERROR;
+  }
+
+  message[0] = (data.initiator << 4) | (data.destination & 0x0f);
+  if (data.opcode_set)
+  {
+    message[1] = data.opcode;
+    msg_len++;
+    memcpy(&message[2], data.parameters.data, data.parameters.size);
+    msg_len+=data.parameters.size;
+  }
+
+  if (m_dev->Write(message, msg_len) == msg_len)
+  {
+    rc = ADAPTER_MESSAGE_STATE_SENT_ACKED;
+  }
+    else
+      LIB_CEC->AddLog(CEC_LOG_ERROR, "%s: sent command error !", __func__);
+
+  return rc;
+}
+
+
+uint16_t CIMXCECAdapterCommunication::GetFirmwareVersion(void)
+{
+  /* FIXME add ioctl ? */
+  return 0;
+}
+
+
+cec_vendor_id CIMXCECAdapterCommunication::GetVendorId(void)
+{
+  return CEC_VENDOR_UNKNOWN;
+}
+
+
+uint16_t CIMXCECAdapterCommunication::GetPhysicalAddress(void)
+{
+  uint32_t info;
+  uint16_t phy_addr;
+
+  if (m_dev->Ioctl(HDMICEC_IOC_GETPHYADDRESS, &info) != 0)
+  {
+    LIB_CEC->AddLog(CEC_LOG_ERROR, "%s: HDMICEC_IOC_GETPHYADDRESS failed !", __func__);
+    return CEC_INVALID_PHYSICAL_ADDRESS; 
+  }
+  /* Rebuild 16 bit raw value from fsl 32 bits value */
+  phy_addr = ((info & 0x0f) << 12) | (info & 0x0f00) |
+             ((info & 0x0f0000) >> 12) | ((info & 0x0f000000) >> 24);
+
+  return phy_addr;
+}
+
+
+cec_logical_addresses CIMXCECAdapterCommunication::GetLogicalAddresses(void)
+{
+  cec_logical_addresses addresses;
+  addresses.Clear();
+
+  CLockObject lock(m_mutex);
+  if ((m_logicalAddress & (CECDEVICE_UNKNOWN | CECDEVICE_UNREGISTERED)) == 0)
+    addresses.Set(m_logicalAddress);
+
+  return addresses;
+}
+
+void CIMXCECAdapterCommunication::HandleLogicalAddressLost(cec_logical_address UNUSED(oldAddress))
+{
+  UnregisterLogicalAddress();
+}
+
+bool CIMXCECAdapterCommunication::UnregisterLogicalAddress(void)
+{
+  CLockObject lock(m_mutex);
+  if (!m_bLogicalAddressRegistered)
+    return true;
+
+  if (m_dev->Ioctl(HDMICEC_IOC_SETLOGICALADDRESS, (void *)CECDEVICE_BROADCAST) != 0)
+  {
+    LIB_CEC->AddLog(CEC_LOG_ERROR, "%s: HDMICEC_IOC_SETLOGICALADDRESS failed !", __func__);
+    return false;
+  }
+
+  m_logicalAddress = CECDEVICE_UNKNOWN;
+  m_bLogicalAddressRegistered = false;
+  return true;
+}
+
+bool CIMXCECAdapterCommunication::RegisterLogicalAddress(const cec_logical_address address)
+{
+  CLockObject lock(m_mutex);
+
+  if (m_logicalAddress == address && m_bLogicalAddressRegistered)
+  {
+    return true;
+  }
+
+  if (m_dev->Ioctl(HDMICEC_IOC_SETLOGICALADDRESS, (void *)address) != 0)
+  {
+    LIB_CEC->AddLog(CEC_LOG_ERROR, "%s: HDMICEC_IOC_SETLOGICALADDRESS failed !", __func__);
+    return false;
+  }
+
+  m_logicalAddress = address;
+  m_bLogicalAddressRegistered = true;
+  return true;
+}
+
+bool CIMXCECAdapterCommunication::SetLogicalAddresses(const cec_logical_addresses &addresses)
+{
+  int log_addr = addresses.primary;
+
+  return RegisterLogicalAddress((cec_logical_address)log_addr);
+}
+
+void *CIMXCECAdapterCommunication::Process(void)
+{
+  bool bHandled;
+  hdmi_cec_event event;
+  int ret;
+
+  uint32_t opcode, status;
+  cec_logical_address initiator, destination;
+
+  while (!IsStopped())
+  {
+    ret = m_dev->Read((char *)&event, sizeof(event), 5000);
+    if (ret > 0)
+    {
+
+      initiator = cec_logical_address(event.msg[0] >> 4);
+      destination = cec_logical_address(event.msg[0] & 0x0f);
+
+      //LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s: Read data : type : %d initiator %d dest %d", __func__, event.event_type, initiator, destination);
+      if (event.event_type == MESSAGE_TYPE_RECEIVE_SUCCESS)
+      /* Message received */
+      {
+        cec_command cmd;
+
+        cec_command::Format(
+          cmd, initiator, destination,
+          ( event.msg_len > 1 ) ? cec_opcode(event.msg[1]) : CEC_OPCODE_NONE);
+
+        for( uint8_t i = 2; i < event.msg_len; i++ )
+          cmd.parameters.PushBack(event.msg[i]);
+
+        if (!IsStopped())
+          m_callback->OnCommandReceived(cmd);
+      }
+
+      if (event.event_type == MESSAGE_TYPE_CONNECTED)
+      /* HDMI has just been reconnected - Notify  phy address*/
+      {
+        uint16_t iNewAddress = GetPhysicalAddress();
+        m_callback->HandlePhysicalAddressChanged(iNewAddress);
+      }
+      /* We are not interested in other events */
+    } /*else {
+      LIB_CEC->AddLog(CEC_LOG_DEBUG, "%s: Read returned %d", __func__, ret);
+    }*/
+
+  }
+
+  return 0;
+}
+
+#endif	// HAVE_IMX_API
diff --git a/src/libcec/adapter/IMX/IMXCECAdapterCommunication.h b/src/libcec/adapter/IMX/IMXCECAdapterCommunication.h
new file mode 100644
index 0000000..9e899a3
--- /dev/null
+++ b/src/libcec/adapter/IMX/IMXCECAdapterCommunication.h
@@ -0,0 +1,119 @@
+#pragma once
+/*
+ * This file is part of the libCEC(R) library.
+ *
+ * libCEC(R) is Copyright (C) 2011-2013 Pulse-Eight Limited.  All rights reserved.
+ * libCEC(R) is an original work, containing original code.
+ *
+ * libCEC(R) is a trademark of Pulse-Eight Limited.
+ *
+ * IMX adpater port is Copyright (C) 2013 by Stephan Rafin
+ * 
+ * You can redistribute this file and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *
+ */
+
+#if defined(HAVE_IMX_API)
+
+#include "platform/threads/mutex.h"
+#include "platform/threads/threads.h"
+#include "platform/sockets/socket.h"
+#include "adapter/AdapterCommunication.h"
+#include <map>
+
+#define IMX_ADAPTER_VID 0x0471 /*FIXME TBD*/
+#define IMX_ADAPTER_PID 0x1001
+
+
+
+namespace PLATFORM
+{
+  class CCDevSocket;
+};
+
+
+namespace CEC
+{
+  class CAdapterMessageQueueEntry;
+
+  class CIMXCECAdapterCommunication : public IAdapterCommunication, public PLATFORM::CThread
+  {
+  public:
+    /*!
+     * @brief Create a new USB-CEC communication handler.
+     * @param callback The callback to use for incoming CEC commands.
+     */
+    CIMXCECAdapterCommunication(IAdapterCommunicationCallback *callback);
+    virtual ~CIMXCECAdapterCommunication(void);
+
+    /** @name IAdapterCommunication implementation */
+    ///{
+    bool Open(uint32_t iTimeoutMs = CEC_DEFAULT_CONNECT_TIMEOUT, bool bSkipChecks = false, bool bStartListening = true);
+    void Close(void);
+    bool IsOpen(void);
+    std::string GetError(void) const;
+    cec_adapter_message_state Write(const cec_command &data, bool &bRetry, uint8_t iLineTimeout, bool bIsReply);
+
+    bool SetLineTimeout(uint8_t UNUSED(iTimeout)) { return true; }
+    bool StartBootloader(void) { return false; }
+    bool SetLogicalAddresses(const cec_logical_addresses &addresses);
+    cec_logical_addresses GetLogicalAddresses(void);
+    bool PingAdapter(void) { return IsInitialised(); }
+    uint16_t GetFirmwareVersion(void);
+    uint32_t GetFirmwareBuildDate(void) { return 0; }
+    bool IsRunningLatestFirmware(void) { return true; }
+    bool PersistConfiguration(const libcec_configuration & UNUSED(configuration)) { return false; }
+    bool GetConfiguration(libcec_configuration & UNUSED(configuration)) { return false; }
+    std::string GetPortName(void) { return std::string("IMX"); }
+    uint16_t GetPhysicalAddress(void);
+    bool SetControlledMode(bool UNUSED(controlled)) { return true; }
+    cec_vendor_id GetVendorId(void);
+    bool SupportsSourceLogicalAddress(const cec_logical_address address) { return address > CECDEVICE_TV && address <= CECDEVICE_BROADCAST; }
+    cec_adapter_type GetAdapterType(void) { return ADAPTERTYPE_IMX; }
+    uint16_t GetAdapterVendorId(void) const { return IMX_ADAPTER_VID; }
+    uint16_t GetAdapterProductId(void) const { return IMX_ADAPTER_PID; }
+    void HandleLogicalAddressLost(cec_logical_address UNUSED(oldAddress));
+    void SetActiveSource(bool UNUSED(bSetTo), bool UNUSED(bClientUnregistered)) {}
+    bool RegisterLogicalAddress(const cec_logical_address address);
+    ///}
+
+    /** @name PLATFORM::CThread implementation */
+    ///{
+    void *Process(void);
+    ///}
+
+  private:
+    bool IsInitialised(void) const { return m_bInitialised; };
+    bool UnregisterLogicalAddress(void);
+
+    std::string                 m_strError; /**< current error message */
+
+    //cec_logical_addresses       m_logicalAddresses;
+    cec_logical_address         m_logicalAddress;
+
+    PLATFORM::CMutex            m_mutex;
+    PLATFORM::CCDevSocket       *m_dev;	/**< the device connection */
+    bool                        m_bLogicalAddressRegistered;
+    bool                        m_bInitialised;
+
+    PLATFORM::CMutex            m_messageMutex;
+    uint32_t                    m_iNextMessage;
+    std::map<uint32_t, CAdapterMessageQueueEntry *> m_messages;
+  };
+  
+};
+
+#endif
diff --git a/src/libcec/adapter/IMX/IMXCECAdapterDetection.cpp b/src/libcec/adapter/IMX/IMXCECAdapterDetection.cpp
new file mode 100644
index 0000000..6c93c45
--- /dev/null
+++ b/src/libcec/adapter/IMX/IMXCECAdapterDetection.cpp
@@ -0,0 +1,42 @@
+/*
+ * This file is part of the libCEC(R) library.
+ *
+ * libCEC(R) is Copyright (C) 2011-2013 Pulse-Eight Limited.  All rights reserved.
+ * libCEC(R) is an original work, containing original code.
+ *
+ * libCEC(R) is a trademark of Pulse-Eight Limited.
+ * 
+ * IMX adpater port is Copyright (C) 2013 by Stephan Rafin
+ * 
+ * You can redistribute this file and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *
+ */
+
+#include "env.h"
+#include <stdio.h>
+
+#if defined(HAVE_IMX_API)
+#include "IMXCECAdapterDetection.h"
+
+
+using namespace CEC;
+
+bool CIMXCECAdapterDetection::FindAdapter(void)
+{
+  return access(CEC_IMX_PATH, 0) == 0;
+}
+
+#endif
diff --git a/src/libcec/adapter/IMX/IMXCECAdapterDetection.h b/src/libcec/adapter/IMX/IMXCECAdapterDetection.h
new file mode 100644
index 0000000..d54891d
--- /dev/null
+++ b/src/libcec/adapter/IMX/IMXCECAdapterDetection.h
@@ -0,0 +1,36 @@
+#pragma once
+/*
+ * This file is part of the libCEC(R) library.
+ *
+ * libCEC(R) is Copyright (C) 2011-2013 Pulse-Eight Limited.  All rights reserved.
+ * libCEC(R) is an original work, containing original code.
+ *
+ * libCEC(R) is a trademark of Pulse-Eight Limited.
+ * 
+ * IMX adpater port is Copyright (C) 2013 by Stephan Rafin
+ * 
+ * You can redistribute this file and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *
+ */
+
+namespace CEC
+{
+  class CIMXCECAdapterDetection
+  {
+  public:
+    static bool FindAdapter(void);
+  };
+}
diff --git a/src/libcec/cmake/CheckPlatformSupport.cmake b/src/libcec/cmake/CheckPlatformSupport.cmake
index 828cdb2..8b47795 100644
--- a/src/libcec/cmake/CheckPlatformSupport.cmake
+++ b/src/libcec/cmake/CheckPlatformSupport.cmake
@@ -8,6 +8,7 @@
 #	HAVE_RANDR                1 if xrandr is supported
 #	HAVE_LIBUDEV              1 if udev is supported
 #	HAVE_RPI_API              1 if Raspberry Pi is supported
+#	HAVE_IMX_API              1 if i.MX is supported
 #	HAVE_TDA995X_API          1 if TDA995X is supported
 #	HAVE_EXYNOS_API           1 if Exynos is supported
 # HAVE_P8_USB_DETECT        1 if Pulse-Eight devices can be auto-detected
@@ -87,6 +88,15 @@ else()
     list(APPEND CEC_SOURCES ${CEC_SOURCES_ADAPTER_RPI})
   endif()
 
+  # i.MX
+  if (HAVE_IMX_API)
+    set(LIB_INFO "${LIB_INFO}, 'IMX'")
+    set(CEC_SOURCES_ADAPTER_IMX adapter/IMX/IMXCECAdapterDetection.cpp
+                                adapter/IMX/IMXCECAdapterCommunication.cpp)
+    source_group("Source Files\\adapter\\IMX" FILES ${CEC_SOURCES_ADAPTER_IMX})
+    list(APPEND CEC_SOURCES ${CEC_SOURCES_ADAPTER_IMX})
+  endif()
+
   # TDA995x
   check_include_files("tda998x_ioctl.h;comps/tmdlHdmiCEC/inc/tmdlHdmiCEC_Types.h" HAVE_TDA995X_API)
   if (HAVE_TDA995X_API)
diff --git a/src/libcec/cmake/DisplayPlatformSupport.cmake b/src/libcec/cmake/DisplayPlatformSupport.cmake
index feee111..0309c56 100644
--- a/src/libcec/cmake/DisplayPlatformSupport.cmake
+++ b/src/libcec/cmake/DisplayPlatformSupport.cmake
@@ -32,6 +32,12 @@ else()
   message(STATUS "Raspberry Pi support:                   no")
 endif()
 
+if (HAVE_IMX_API)
+  message(STATUS "i.MX support:                           yes")
+else()
+  message(STATUS "i.MX support:                           no")
+endif()
+
 if (HAVE_TDA995X_API)
   message(STATUS "TDA995x support:                        yes")
 else()
diff --git a/src/libcec/env.h.in b/src/libcec/env.h.in
index a1a1f26..f90e729 100644
--- a/src/libcec/env.h.in
+++ b/src/libcec/env.h.in
@@ -60,6 +60,9 @@
 /* Define to 1 for Raspberry Pi support */
 #cmakedefine HAVE_RPI_API @HAVE_RPI_API@
 
+/* Define to 1 for IMX support */
+#cmakedefine HAVE_IMX_API @HAVE_IMX_API@
+
 /* Define to 1 for TDA995x support */
 #cmakedefine HAVE_TDA995X_API @HAVE_TDA995X_API@
 
-- 
2.1.4

