/**
@verbatim

Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.

        ADDI-DATA GmbH
        Dieselstrasse 3
        D-77833 Ottersweier
        Tel: +19(0)7223/9493-0
        Fax: +49(0)7223/9493-92
        http://www.addi-data-com
        info@addi-data.com

This program is free software; 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

You shoud also find the complete GPL in the COPYING file accompanying this source code.

@endverbatim
*/
/*.

  +-----------------------------------------------------------------------+
  | (C) ADDI-DATA GmbH          Dieselstraße 3       D-77833 Ottersweier  |
  +-----------------------------------------------------------------------+
  | Tel : +49 (0) 7223/9493-0     | email    : info@addi-data.com         |
  | Fax : +49 (0) 7223/9493-92    | Internet : http://www.addi-data.com   |
  +-------------------------------+---------------------------------------+
  | Project     : APCI-3501       | Compiler   : GCC                      |
  | Module name : hwdrv_apci3501.c| Version    : 2.96                     |
  +-------------------------------+---------------------------------------+
  | Project manager: Eric Stolz   | Date       :  02/12/2002              |
  +-------------------------------+---------------------------------------+
  | Description :   Hardware Layer Acces For APCI-3501                    |
  +-----------------------------------------------------------------------+
  |                             UPDATES                                   |
  +----------+-----------+------------------------------------------------+
  |   Date   |   Author  |          Description of updates                |
  +----------+-----------+------------------------------------------------+
  |          |           |                                                |
  |          |           |                                                |
  |          |           |                                                |
  +----------+-----------+------------------------------------------------+
*/

/*
+----------------------------------------------------------------------------+
|                               Included files                               |
+----------------------------------------------------------------------------+
*/
#include "hwdrv_apci3501.h"

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI3501_ReadDigitalInput                    |
|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
|                      struct comedi_insn *insn,unsigned int *data)                     |
+----------------------------------------------------------------------------+
| Task              : Read  value  of the selected channel or port           |
+----------------------------------------------------------------------------+
| Input Parameters  : struct comedi_device *dev      : Driver handle                |
|                     UINT ui_NoOfChannels    : No Of Channels To read       |
|                     UINT *data              : Data Pointer to read status  |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/

INT i_APCI3501_ReadDigitalInput(struct comedi_device * dev, struct comedi_subdevice * s,
	struct comedi_insn * insn, unsigned int * data)
{
	UINT ui_Temp;
	UINT ui_NoOfChannel;
	ui_NoOfChannel = CR_CHAN(insn->chanspec);
	ui_Temp = data[0];
	*data = inl(devpriv->iobase + APCI3501_DIGITAL_IP);
	if (ui_Temp == 0) {
		*data = (*data >> ui_NoOfChannel) & 0x1;
	}			//if  (ui_Temp==0)
	else {
		if (ui_Temp == 1) {

			*data = *data & 0x3;
		}		//if  (ui_Temp==1)
		else {
			printk("\nSpecified channel not supported \n");
		}		//elseif  (ui_Temp==1)
	}			//elseif  (ui_Temp==0)
	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI3501_ConfigDigitalOutput                     |
|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
|                      struct comedi_insn *insn,unsigned int *data)                     |
+----------------------------------------------------------------------------+
| Task              : Configures The Digital Output Subdevice.               |
+----------------------------------------------------------------------------+
| Input Parameters  : struct comedi_device *dev : Driver handle                     |
|                     UINT *data         : Data Pointer contains             |
|                                          configuration parameters as below |
|                                                                            |
|					  data[1]            : 1 Enable  VCC  Interrupt  |
|										   0 Disable VCC  Interrupt  |
|					  data[2]            : 1 Enable  CC  Interrupt   |
|										   0 Disable CC  Interrupt   |
|																	 |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/
int i_APCI3501_ConfigDigitalOutput(struct comedi_device * dev, struct comedi_subdevice * s,
	struct comedi_insn * insn, unsigned int * data)
{

	if ((data[0] != 0) && (data[0] != 1)) {
		comedi_error(dev,
			"Not a valid Data !!! ,Data should be 1 or 0\n");
		return -EINVAL;
	}			//if  ( (data[0]!=0) && (data[0]!=1) )
	if (data[0]) {
		devpriv->b_OutputMemoryStatus = ADDIDATA_ENABLE;
	}			// if  (data[0])
	else {
		devpriv->b_OutputMemoryStatus = ADDIDATA_DISABLE;
	}			//else if  (data[0])
	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI3501_WriteDigitalOutput                      |
|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
|                      struct comedi_insn *insn,unsigned int *data)                     |
+----------------------------------------------------------------------------+
| Task              : writes To the digital Output Subdevice                 |
+----------------------------------------------------------------------------+
| Input Parameters  : struct comedi_device *dev      : Driver handle                |
|                     struct comedi_subdevice *s     : Subdevice Pointer            |
|                     struct comedi_insn *insn       : Insn Structure Pointer       |
|                     unsigned int *data          : Data Pointer contains        |
|                                          configuration parameters as below |
|                                                                            |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/
INT i_APCI3501_WriteDigitalOutput(struct comedi_device * dev, struct comedi_subdevice * s,
	struct comedi_insn * insn, unsigned int * data)
{
	UINT ui_Temp, ui_Temp1;
	UINT ui_NoOfChannel = CR_CHAN(insn->chanspec);	// get the channel
	if (devpriv->b_OutputMemoryStatus) {
		ui_Temp = inl(devpriv->iobase + APCI3501_DIGITAL_OP);
	}			//if(devpriv->b_OutputMemoryStatus )
	else {
		ui_Temp = 0;
	}			//if(devpriv->b_OutputMemoryStatus )
	if (data[3] == 0) {
		if (data[1] == 0) {
			data[0] = (data[0] << ui_NoOfChannel) | ui_Temp;
			outl(data[0], devpriv->iobase + APCI3501_DIGITAL_OP);
		}		//if(data[1]==0)
		else {
			if (data[1] == 1) {
				data[0] = (data[0] << (2 * data[2])) | ui_Temp;
				outl(data[0],
					devpriv->iobase + APCI3501_DIGITAL_OP);
			}	// if(data[1]==1)
			else {
				printk("\nSpecified channel not supported\n");
			}	//else if(data[1]==1)
		}		//elseif(data[1]==0)
	}			//if(data[3]==0)
	else {
		if (data[3] == 1) {
			if (data[1] == 0) {
				data[0] = ~data[0] & 0x1;
				ui_Temp1 = 1;
				ui_Temp1 = ui_Temp1 << ui_NoOfChannel;
				ui_Temp = ui_Temp | ui_Temp1;
				data[0] =
					(data[0] << ui_NoOfChannel) ^
					0xffffffff;
				data[0] = data[0] & ui_Temp;
				outl(data[0],
					devpriv->iobase + APCI3501_DIGITAL_OP);
			}	//if(data[1]==0)
			else {
				if (data[1] == 1) {
					data[0] = ~data[0] & 0x3;
					ui_Temp1 = 3;
					ui_Temp1 = ui_Temp1 << 2 * data[2];
					ui_Temp = ui_Temp | ui_Temp1;
					data[0] =
						((data[0] << (2 *
								data[2])) ^
						0xffffffff) & ui_Temp;
					outl(data[0],
						devpriv->iobase +
						APCI3501_DIGITAL_OP);
				}	// if(data[1]==1)
				else {
					printk("\nSpecified channel not supported\n");
				}	//else if(data[1]==1)
			}	//elseif(data[1]==0)
		}		//if(data[3]==1);
		else {
			printk("\nSpecified functionality does not exist\n");
			return -EINVAL;
		}		//if else data[3]==1)
	}			//if else data[3]==0)
	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI3501_ReadDigitalOutput                       |
|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
|                      struct comedi_insn *insn,unsigned int *data)                     |
+----------------------------------------------------------------------------+
| Task              : Read  value  of the selected channel or port           |
+----------------------------------------------------------------------------+
| Input Parameters  : struct comedi_device *dev      : Driver handle                |
|                     UINT ui_NoOfChannels    : No Of Channels To read       |
|                     UINT *data              : Data Pointer to read status  |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/
INT i_APCI3501_ReadDigitalOutput(struct comedi_device * dev, struct comedi_subdevice * s,
	struct comedi_insn * insn, unsigned int * data)
{
	UINT ui_Temp;
	UINT ui_NoOfChannel;

	ui_NoOfChannel = CR_CHAN(insn->chanspec);
	ui_Temp = data[0];
	*data = inl(devpriv->iobase + APCI3501_DIGITAL_OP);
	if (ui_Temp == 0) {
		*data = (*data >> ui_NoOfChannel) & 0x1;
	}			// if  (ui_Temp==0)
	else {
		if (ui_Temp == 1) {
			*data = *data & 0x3;

		}		// if  (ui_Temp==1)
		else {
			printk("\nSpecified channel not supported \n");
		}		// else if (ui_Temp==1)
	}			// else if  (ui_Temp==0)
	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI3501_ConfigAnalogOutput                      |
|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
|                      struct comedi_insn *insn,unsigned int *data)                     |
+----------------------------------------------------------------------------+
| Task              : Configures The Analog Output Subdevice                 |
+----------------------------------------------------------------------------+
| Input Parameters  : struct comedi_device *dev      : Driver handle                |
|                     struct comedi_subdevice *s     : Subdevice Pointer            |
|                     struct comedi_insn *insn       : Insn Structure Pointer       |
|                     unsigned int *data          : Data Pointer contains        |
|                                          configuration parameters as below |
|                                                                            |
|					data[0]            : Voltage Mode                |
|                                                0:Mode 0                    |
|                                                1:Mode 1                    |
|                                                                            |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/
INT i_APCI3501_ConfigAnalogOutput(struct comedi_device * dev, struct comedi_subdevice * s,
	struct comedi_insn * insn, unsigned int * data)
{
	outl(data[0],
		devpriv->iobase + APCI3501_ANALOG_OUTPUT +
		APCI3501_AO_VOLT_MODE);

	if (data[0]) {
		devpriv->b_InterruptMode = MODE1;
	} else {
		devpriv->b_InterruptMode = MODE0;
	}
	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI3501_WriteAnalogOutput                       |
|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
|                      struct comedi_insn *insn,unsigned int *data)                     |
+----------------------------------------------------------------------------+
| Task              : Writes To the Selected Anlog Output Channel            |
+----------------------------------------------------------------------------+
| Input Parameters  : struct comedi_device *dev      : Driver handle                |
|                     struct comedi_subdevice *s     : Subdevice Pointer            |
|                     struct comedi_insn *insn       : Insn Structure Pointer       |
|                     unsigned int *data          : Data Pointer contains        |
|                                          configuration parameters as below |
|                                                                            |
|                                                                            |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/
INT i_APCI3501_WriteAnalogOutput(struct comedi_device * dev, struct comedi_subdevice * s,
	struct comedi_insn * insn, unsigned int * data)
{
	ULONG ul_Command1 = 0, ul_Channel_no, ul_Polarity, ul_DAC_Ready = 0;;

	ul_Channel_no = CR_CHAN(insn->chanspec);

	if (devpriv->b_InterruptMode == MODE1) {
		ul_Polarity = 0x80000000;
		if ((*data < 0) || (*data > 16384)) {
			printk("\nIn WriteAnalogOutput :: Not Valid Data\n");
		}

	}			// end if(devpriv->b_InterruptMode==MODE1)
	else {
		ul_Polarity = 0;
		if ((*data < 0) || (*data > 8192)) {
			printk("\nIn WriteAnalogOutput :: Not Valid Data\n");
		}

	}			// end else

	if ((ul_Channel_no < 0) || (ul_Channel_no > 7)) {
		printk("\nIn WriteAnalogOutput :: Not Valid Channel\n");
	}			// end if((ul_Channel_no<0)||(ul_Channel_no>7))

	ul_DAC_Ready = inl(devpriv->iobase + APCI3501_ANALOG_OUTPUT);

	while (ul_DAC_Ready == 0) {
		ul_DAC_Ready = inl(devpriv->iobase + APCI3501_ANALOG_OUTPUT);
		ul_DAC_Ready = (ul_DAC_Ready >> 8) & 1;
	}

	if (ul_DAC_Ready) {
// Output the Value on the output channels.
		ul_Command1 =
			(ULONG) ((ULONG) (ul_Channel_no & 0xFF) |
			(ULONG) ((*data << 0x8) & 0x7FFFFF00L) |
			(ULONG) (ul_Polarity));
		outl(ul_Command1,
			devpriv->iobase + APCI3501_ANALOG_OUTPUT +
			APCI3501_AO_PROG);
	}

	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI3501_ConfigTimerCounterWatchdog              |
|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
|                      struct comedi_insn *insn,unsigned int *data)                     |
+----------------------------------------------------------------------------+
| Task              : Configures The Timer , Counter or Watchdog             |
+----------------------------------------------------------------------------+
| Input Parameters  : struct comedi_device *dev : Driver handle                     |
|                     UINT *data         : Data Pointer contains             |
|                                          configuration parameters as below |
|                                                                            |
|					  data[0]            : 0 Configure As Timer      |
|										   1 Configure As Counter    |
|										   2 Configure As Watchdog   |
|					  data[1]            : 1 Enable  Interrupt       |
|										   0 Disable Interrupt 	     |
|					  data[2]            : Time Unit                 |
|					  data[3]			 : Reload Value			     |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/
INT i_APCI3501_ConfigTimerCounterWatchdog(struct comedi_device * dev,
	struct comedi_subdevice * s, struct comedi_insn * insn, unsigned int * data)
{
	ULONG ul_Command1 = 0;
	devpriv->tsk_Current = current;
	if (data[0] == ADDIDATA_WATCHDOG) {

		devpriv->b_TimerSelectMode = ADDIDATA_WATCHDOG;
		//Disable the watchdog
		outl(0x0, devpriv->iobase + APCI3501_WATCHDOG + APCI3501_TCW_PROG);	//disable Wa

		if (data[1] == 1) {
			//Enable TIMER int & DISABLE ALL THE OTHER int SOURCES
			outl(0x02,
				devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
		} else {
			outl(0x0, devpriv->iobase + APCI3501_WATCHDOG + APCI3501_TCW_PROG);	//disable Timer interrupt
		}

		//Loading the Timebase value
		outl(data[2],
			devpriv->iobase + APCI3501_WATCHDOG +
			APCI3501_TCW_TIMEBASE);

		//Loading the Reload value
		outl(data[3],
			devpriv->iobase + APCI3501_WATCHDOG +
			APCI3501_TCW_RELOAD_VALUE);
		//Set the mode
		ul_Command1 = inl(devpriv->iobase + APCI3501_WATCHDOG + APCI3501_TCW_PROG) | 0xFFF819E0UL;	//e2->e0
		outl(ul_Command1,
			devpriv->iobase + APCI3501_WATCHDOG +
			APCI3501_TCW_PROG);
	}			//end if(data[0]==ADDIDATA_WATCHDOG)

	else if (data[0] == ADDIDATA_TIMER) {
		//First Stop The Timer
		ul_Command1 =
			inl(devpriv->iobase + APCI3501_WATCHDOG +
			APCI3501_TCW_PROG);
		ul_Command1 = ul_Command1 & 0xFFFFF9FEUL;
		outl(ul_Command1, devpriv->iobase + APCI3501_WATCHDOG + APCI3501_TCW_PROG);	//Stop The Timer
		devpriv->b_TimerSelectMode = ADDIDATA_TIMER;
		if (data[1] == 1) {
			//Enable TIMER int & DISABLE ALL THE OTHER int SOURCES
			outl(0x02,
				devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
		} else {
			outl(0x0, devpriv->iobase + APCI3501_WATCHDOG + APCI3501_TCW_PROG);	//disable Timer interrupt
		}

		// Loading Timebase
		outl(data[2],
			devpriv->iobase + APCI3501_WATCHDOG +
			APCI3501_TCW_TIMEBASE);

		//Loading the Reload value
		outl(data[3],
			devpriv->iobase + APCI3501_WATCHDOG +
			APCI3501_TCW_RELOAD_VALUE);

		// printk ("\nTimer Address :: %x\n", (devpriv->iobase+APCI3501_WATCHDOG));
		ul_Command1 =
			inl(devpriv->iobase + APCI3501_WATCHDOG +
			APCI3501_TCW_PROG);
		ul_Command1 =
			(ul_Command1 & 0xFFF719E2UL) | 2UL << 13UL | 0x10UL;
		outl(ul_Command1, devpriv->iobase + APCI3501_WATCHDOG + APCI3501_TCW_PROG);	//mode 2

	}			//end if(data[0]==ADDIDATA_TIMER)

	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI3501_StartStopWriteTimerCounterWatchdog      |
|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
|                      struct comedi_insn *insn,unsigned int *data)                     |
+----------------------------------------------------------------------------+
| Task              : Start / Stop The Selected Timer , Counter or Watchdog  |
+----------------------------------------------------------------------------+
| Input Parameters  : struct comedi_device *dev : Driver handle                     |
|                     UINT *data         : Data Pointer contains             |
|                                          configuration parameters as below |
|                                                                            |
|					  data[0]            : 0 Timer                   |
|										   1 Counter                 |
|										   2 Watchdog          		 |                             |            				 data[1]            : 1 Start                   |
|										   0 Stop      				 |									                                              2 Trigger                 |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/

int i_APCI3501_StartStopWriteTimerCounterWatchdog(struct comedi_device * dev,
	struct comedi_subdevice * s, struct comedi_insn * insn, unsigned int * data)
{
	ULONG ul_Command1 = 0;
	int i_Temp;
	if (devpriv->b_TimerSelectMode == ADDIDATA_WATCHDOG) {

		if (data[1] == 1) {
			ul_Command1 =
				inl(devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
			ul_Command1 = (ul_Command1 & 0xFFFFF9FFUL) | 0x1UL;
			//Enable the Watchdog
			outl(ul_Command1,
				devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
		}

		else if (data[1] == 0)	//Stop The Watchdog
		{
			//Stop The Watchdog
			ul_Command1 =
				inl(devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
			ul_Command1 = ul_Command1 & 0xFFFFF9FEUL;
			outl(0x0,
				devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
		} else if (data[1] == 2) {
			ul_Command1 =
				inl(devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
			ul_Command1 = (ul_Command1 & 0xFFFFF9FFUL) | 0x200UL;
			outl(ul_Command1,
				devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
		}		//if(data[1]==2)
	}			// end if (devpriv->b_TimerSelectMode==ADDIDATA_WATCHDOG)

	if (devpriv->b_TimerSelectMode == ADDIDATA_TIMER) {
		if (data[1] == 1) {

			ul_Command1 =
				inl(devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
			ul_Command1 = (ul_Command1 & 0xFFFFF9FFUL) | 0x1UL;
			//Enable the Timer
			outl(ul_Command1,
				devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
		} else if (data[1] == 0) {
			//Stop The Timer
			ul_Command1 =
				inl(devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
			ul_Command1 = ul_Command1 & 0xFFFFF9FEUL;
			outl(ul_Command1,
				devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
		}

		else if (data[1] == 2) {
			//Trigger the Timer
			ul_Command1 =
				inl(devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
			ul_Command1 = (ul_Command1 & 0xFFFFF9FFUL) | 0x200UL;
			outl(ul_Command1,
				devpriv->iobase + APCI3501_WATCHDOG +
				APCI3501_TCW_PROG);
		}

	}			// end if (devpriv->b_TimerSelectMode==ADDIDATA_TIMER)
	i_Temp = inl(devpriv->iobase + APCI3501_WATCHDOG +
		APCI3501_TCW_TRIG_STATUS) & 0x1;
	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI3501_ReadTimerCounterWatchdog                |
|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
|                      struct comedi_insn *insn,unsigned int *data)                     |
+----------------------------------------------------------------------------+
| Task              : Read The Selected Timer , Counter or Watchdog          |
+----------------------------------------------------------------------------+
| Input Parameters  : struct comedi_device *dev : Driver handle                     |
|                     UINT *data         : Data Pointer contains             |
|                                          configuration parameters as below |
|                                                                            |
|					  data[0]            : 0 Timer                   |
|										   1 Counter                 |
|										   2 Watchdog                |                             |					  data[1]             : Timer Counter Watchdog Number   |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/

int i_APCI3501_ReadTimerCounterWatchdog(struct comedi_device * dev,
	struct comedi_subdevice * s, struct comedi_insn * insn, unsigned int * data)
{

	if (devpriv->b_TimerSelectMode == ADDIDATA_WATCHDOG) {
		data[0] =
			inl(devpriv->iobase + APCI3501_WATCHDOG +
			APCI3501_TCW_TRIG_STATUS) & 0x1;
		data[1] = inl(devpriv->iobase + APCI3501_WATCHDOG);
	}			// end if  (devpriv->b_TimerSelectMode==ADDIDATA_WATCHDOG)

	else if (devpriv->b_TimerSelectMode == ADDIDATA_TIMER) {
		data[0] =
			inl(devpriv->iobase + APCI3501_WATCHDOG +
			APCI3501_TCW_TRIG_STATUS) & 0x1;
		data[1] = inl(devpriv->iobase + APCI3501_WATCHDOG);
	}			// end if  (devpriv->b_TimerSelectMode==ADDIDATA_TIMER)

	else if ((devpriv->b_TimerSelectMode != ADDIDATA_TIMER)
		&& (devpriv->b_TimerSelectMode != ADDIDATA_WATCHDOG)) {
		printk("\nIn ReadTimerCounterWatchdog :: Invalid Subdevice \n");
	}
	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   :  int i_APCI3501_Reset(struct comedi_device *dev)			     |
|					                                                 |
+----------------------------------------------------------------------------+
| Task              :Resets the registers of the card                        |
+----------------------------------------------------------------------------+
| Input Parameters  :                                                        |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      :                                                        |
|			                                                         |
+----------------------------------------------------------------------------+
*/

int i_APCI3501_Reset(struct comedi_device * dev)
{
	int i_Count = 0, i_temp = 0;
	ULONG ul_Command1 = 0, ul_Polarity, ul_DAC_Ready = 0;
	outl(0x0, devpriv->iobase + APCI3501_DIGITAL_OP);
	outl(1, devpriv->iobase + APCI3501_ANALOG_OUTPUT +
		APCI3501_AO_VOLT_MODE);

	ul_Polarity = 0x80000000;

	for (i_Count = 0; i_Count <= 7; i_Count++) {
		ul_DAC_Ready = inl(devpriv->iobase + APCI3501_ANALOG_OUTPUT);

		while (ul_DAC_Ready == 0) {
			ul_DAC_Ready =
				inl(devpriv->iobase + APCI3501_ANALOG_OUTPUT);
			ul_DAC_Ready = (ul_DAC_Ready >> 8) & 1;
		}

		if (ul_DAC_Ready) {
			// Output the Value on the output channels.
			ul_Command1 =
				(ULONG) ((ULONG) (i_Count & 0xFF) |
				(ULONG) ((i_temp << 0x8) & 0x7FFFFF00L) |
				(ULONG) (ul_Polarity));
			outl(ul_Command1,
				devpriv->iobase + APCI3501_ANALOG_OUTPUT +
				APCI3501_AO_PROG);
		}
	}

	return 0;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : static void v_APCI3501_Interrupt					     |
|					  (int irq , void *d)      |
+----------------------------------------------------------------------------+
| Task              : Interrupt processing Routine                           |
+----------------------------------------------------------------------------+
| Input Parameters  : int irq                 : irq number                   |
|                     void *d                 : void pointer                 |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/
void v_APCI3501_Interrupt(int irq, void *d)
{
	int i_temp;
	struct comedi_device *dev = d;
	unsigned int ui_Timer_AOWatchdog;
	unsigned long ul_Command1;
	// Disable Interrupt
	ul_Command1 =
		inl(devpriv->iobase + APCI3501_WATCHDOG + APCI3501_TCW_PROG);

	ul_Command1 = (ul_Command1 & 0xFFFFF9FDul);
	outl(ul_Command1,
		devpriv->iobase + APCI3501_WATCHDOG + APCI3501_TCW_PROG);

	ui_Timer_AOWatchdog =
		inl(devpriv->iobase + APCI3501_WATCHDOG +
		APCI3501_TCW_IRQ) & 0x1;

	if ((!ui_Timer_AOWatchdog)) {
		comedi_error(dev, "IRQ from unknow source");
		return;
	}

	// Enable Interrupt
	//Send a signal to from kernel to user space
	send_sig(SIGIO, devpriv->tsk_Current, 0);
	ul_Command1 =
		inl(devpriv->iobase + APCI3501_WATCHDOG + APCI3501_TCW_PROG);
	ul_Command1 = ((ul_Command1 & 0xFFFFF9FDul) | 1 << 1);
	outl(ul_Command1,
		devpriv->iobase + APCI3501_WATCHDOG + APCI3501_TCW_PROG);
	i_temp = inl(devpriv->iobase + APCI3501_WATCHDOG +
		APCI3501_TCW_TRIG_STATUS) & 0x1;
	return;
}