drivers/staging/comedi/drivers/addi-data/hwdrv_apci2200.c

/**
@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 should 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-2200       | Compiler   : GCC                      |
  | Module name : hwdrv_apci2200.c| Version    : 2.96                     |
  +-------------------------------+---------------------------------------+
  | Project manager: Eric Stolz   | Date       :  02/12/2002              |
  +-------------------------------+---------------------------------------+
  | Description :   Hardware Layer Access For APCI-2200                   |
  +-----------------------------------------------------------------------+
  |                             UPDATES                                   |
  +----------+-----------+------------------------------------------------+
  |   Date   |   Author  |          Description of updates                |
  +----------+-----------+------------------------------------------------+
  |          |           |                                                |
  |          |           |                                                |
  |          |           |                                                |
  +----------+-----------+------------------------------------------------+
*/

/*********      Definitions for APCI-2200 card  *****/

/* Card Specific information */
#define APCI2200_ADDRESS_RANGE		64

/* DIGITAL INPUT-OUTPUT DEFINE */

#define APCI2200_DIGITAL_OP		4
#define APCI2200_DIGITAL_IP		0

/* TIMER COUNTER WATCHDOG DEFINES */

#define APCI2200_WATCHDOG		0x08
#define APCI2200_WATCHDOG_ENABLEDISABLE	12
#define APCI2200_WATCHDOG_RELOAD_VALUE	4
#define APCI2200_WATCHDOG_STATUS	16

static int apci2200_di_insn_bits(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn,
				 unsigned int *data)
{
	struct addi_private *devpriv = dev->private;

	data[1] = inw(devpriv->iobase + APCI2200_DIGITAL_IP);

	return insn->n;
}

static int apci2200_do_insn_bits(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn,
				 unsigned int *data)
{
	struct addi_private *devpriv = dev->private;
	unsigned int mask = data[0];
	unsigned int bits = data[1];

	s->state = inw(devpriv->iobase + APCI2200_DIGITAL_OP);
	if (mask) {
		s->state &= ~mask;
		s->state |= (bits & mask);

		outw(s->state, devpriv->iobase + APCI2200_DIGITAL_OP);
	}

	data[1] = s->state;

	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI2200_ConfigWatchdog(struct comedi_device *dev,
|                      struct comedi_subdevice *s,struct comedi_insn *insn,unsigned int *data)  |
|				                                                     |
+----------------------------------------------------------------------------+
| Task              : Configures The Watchdog                                |
+----------------------------------------------------------------------------+
| Input Parameters  :   struct comedi_device *dev      : Driver handle              |
|                     struct comedi_subdevice *s,   :pointer to subdevice structure
|                      struct comedi_insn *insn      :pointer to insn structure      |
|                     unsigned int *data          : Data Pointer to read status                                                                                                             |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/

static int i_APCI2200_ConfigWatchdog(struct comedi_device *dev,
				     struct comedi_subdevice *s,
				     struct comedi_insn *insn,
				     unsigned int *data)
{
	struct addi_private *devpriv = dev->private;

	if (data[0] == 0) {
		/* Disable the watchdog */
		outw(0x0,
			devpriv->iobase + APCI2200_WATCHDOG +
			APCI2200_WATCHDOG_ENABLEDISABLE);
		/* Loading the Reload value */
		outw(data[1],
			devpriv->iobase + APCI2200_WATCHDOG +
			APCI2200_WATCHDOG_RELOAD_VALUE);
		data[1] = data[1] >> 16;
		outw(data[1],
			devpriv->iobase + APCI2200_WATCHDOG +
			APCI2200_WATCHDOG_RELOAD_VALUE + 2);
	}			/* if(data[0]==0) */
	else {
		printk("\nThe input parameters are wrong\n");
		return -EINVAL;
	}			/* elseif(data[0]==0) */

	return insn->n;
}

 /*
    +----------------------------------------------------------------------------+
    | Function   Name   : int i_APCI2200_StartStopWriteWatchdog                  |
    |                           (struct comedi_device *dev,struct comedi_subdevice *s,
    struct comedi_insn *insn,unsigned int *data);                      |
    +----------------------------------------------------------------------------+
    | Task              : Start / Stop The Watchdog                              |
    +----------------------------------------------------------------------------+
    | Input Parameters  : struct comedi_device *dev      : Driver handle                |
    |                     struct comedi_subdevice *s,   :pointer to subdevice structure
    struct comedi_insn *insn      :pointer to insn structure      |
    |                     unsigned int *data          : Data Pointer to read status  |
    +----------------------------------------------------------------------------+
    | Output Parameters :       --                                                                                                       |
    +----------------------------------------------------------------------------+
    | Return Value      : TRUE  : No error occur                                 |
    |                       : FALSE : Error occur. Return the error          |
    |                                                                            |
    +----------------------------------------------------------------------------+
  */

static int i_APCI2200_StartStopWriteWatchdog(struct comedi_device *dev,
					     struct comedi_subdevice *s,
					     struct comedi_insn *insn,
					     unsigned int *data)
{
	struct addi_private *devpriv = dev->private;

	switch (data[0]) {
	case 0:		/* stop the watchdog */
		outw(0x0, devpriv->iobase + APCI2200_WATCHDOG + APCI2200_WATCHDOG_ENABLEDISABLE);	/* disable the watchdog */
		break;
	case 1:		/* start the watchdog */
		outw(0x0001,
			devpriv->iobase + APCI2200_WATCHDOG +
			APCI2200_WATCHDOG_ENABLEDISABLE);
		break;
	case 2:		/* Software trigger */
		outw(0x0201,
			devpriv->iobase + APCI2200_WATCHDOG +
			APCI2200_WATCHDOG_ENABLEDISABLE);
		break;
	default:
		printk("\nSpecified functionality does not exist\n");
		return -EINVAL;
	}			/*  switch(data[0]) */
	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI2200_ReadWatchdog                            |
|			(struct comedi_device *dev,struct comedi_subdevice *s,struct comedi_insn *insn,
|                    unsigned int *data); 	                                     |
+----------------------------------------------------------------------------+
| Task              : Read The Watchdog                                      |
+----------------------------------------------------------------------------+
| Input Parameters  :   struct comedi_device *dev      : Driver handle              |
|                     struct comedi_subdevice *s,   :pointer to subdevice structure
|                      struct comedi_insn *insn      :pointer to insn structure      |
|                     unsigned int *data          : Data Pointer to read status  |
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      : TRUE  : No error occur                                 |
|		            : FALSE : Error occur. Return the error          |
|			                                                         |
+----------------------------------------------------------------------------+
*/

static int i_APCI2200_ReadWatchdog(struct comedi_device *dev,
				   struct comedi_subdevice *s,
				   struct comedi_insn *insn,
				   unsigned int *data)
{
	struct addi_private *devpriv = dev->private;

	data[0] =
		inw(devpriv->iobase + APCI2200_WATCHDOG +
		APCI2200_WATCHDOG_STATUS) & 0x1;
	return insn->n;
}

/*
+----------------------------------------------------------------------------+
| Function   Name   : int i_APCI2200_Reset(struct comedi_device *dev)               |                                                                                                          |
+----------------------------------------------------------------------------+
| Task              :resets all the registers                                |
+----------------------------------------------------------------------------+
| Input Parameters  : struct comedi_device *dev
+----------------------------------------------------------------------------+
| Output Parameters :	--													 |
+----------------------------------------------------------------------------+
| Return Value      :                                                        |
|			                                                         |
+----------------------------------------------------------------------------+
*/

static int i_APCI2200_Reset(struct comedi_device *dev)
{
	struct addi_private *devpriv = dev->private;

	outw(0x0, devpriv->iobase + APCI2200_DIGITAL_OP);	/* RESETS THE DIGITAL OUTPUTS */
	outw(0x0,
		devpriv->iobase + APCI2200_WATCHDOG +
		APCI2200_WATCHDOG_ENABLEDISABLE);
	outw(0x0,
		devpriv->iobase + APCI2200_WATCHDOG +
		APCI2200_WATCHDOG_RELOAD_VALUE);
	outw(0x0,
		devpriv->iobase + APCI2200_WATCHDOG +
		APCI2200_WATCHDOG_RELOAD_VALUE + 2);
	return 0;
}