qegpioint.h

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//
// begin license header
//  
// This file is part of Terk and TerkOS.
//
// All Terk and TerkOS source code is provided under the terms of the 
// GNU General Public License v2 (http://www.gnu.org/licenses/gpl-2.0.html).  
// Those wishing to use Terk and TerkOS source code, software and/or
// technologies under different licensing terms should contact us at 
// [email protected]. Such licensing terms are available for
// all portions of the Terk and TerkOS codebase presented here.
//
// end license header
//

#ifndef _QEGPIOINT_H
#define _QEGPIOINT_H

#include "property.h"
#include "singleton.h"
#include "9302hw.h"

// Properties
#define QEG_OBJECT                           3
#define QEG_PROP_WIDTH                       PROP_ID(QEG_OBJECT, 0)

// interrupt modes, can possibly be used as bitmap
#define QEG_INTERRUPT_POSEDGE                0x0001
#define QEG_INTERRUPT_NEGEDGE                0x0002

#define QEG_DEFAULT_BASE                     0x440
#define QEG_NUM_IO                           16

// set interrupt mode, pos, neg, disabled (set/getprop)
// register callback (SetCallback(int vec, callback))
// read timestamps from queue (ReadTimestamp()
// set/read ddr (set/getprop)
// set/read data (set/getprop)

class CQEGpioInt : public IProperty
{
public:
  SINGLETON(CQEGpioInt);

  virtual int GetProperty(int property, long *value);

  virtual int SetProperty(int property, long value);

  void SetData(unsigned int data);

  void SetDataBit(unsigned int bit);

    void ResetDataBit(unsigned int bit);

  void SetDataDirection(unsigned int direction);

  unsigned int GetData();

  unsigned int GetDataDirection();

  int SetInterruptMode(unsigned int io, unsigned int mode);

  int SetInterrupt(unsigned int io, bool enable);
  
  int RegisterCallback(unsigned int io, void *userPointer, void (*callback)(unsigned int, struct timeval *, void *));

   int UnregisterCallback(unsigned int io);

private:
  CQEGpioInt();
  ~CQEGpioInt();

  int OpenDevice(unsigned int io);
  void CloseDevice(unsigned int io);
    
  void SetSignal(bool set);

  static void SigHandler(int signum);

  static int m_fd[QEG_NUM_IO];
  static void (*m_callback[QEG_NUM_IO])(unsigned int, struct timeval *, void *);
  static void *m_userPointer[QEG_NUM_IO];

  C9302Hardware *m_p9302hw;
  volatile unsigned short *m_data;
  volatile unsigned short *m_dataDir;
  volatile unsigned short *m_intMode;
};

#endif