drivers/staging/comedi/drivers/pcl726.c - kernel/skids - Git at Google

 /*
     comedi/drivers/pcl726.c

     hardware driver for Advantech cards:
      card:   PCL-726, PCL-727, PCL-728
      driver: pcl726,  pcl727,  pcl728
     and for ADLink cards:
      card:   ACL-6126, ACL-6128
      driver: acl6126,  acl6128

     COMEDI - Linux Control and Measurement Device Interface
     Copyright (C) 1998 David A. Schleef <ds@schleef.org>

     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., 675 Mass Ave, Cambridge, MA 02139, USA.

 */
 /*
 Driver: pcl726
 Description: Advantech PCL-726 & compatibles
 Author: ds
 Status: untested
 Devices: [Advantech] PCL-726 (pcl726), PCL-727 (pcl727), PCL-728 (pcl728),
   [ADLink] ACL-6126 (acl6126), ACL-6128 (acl6128)

 Interrupts are not supported.

     Options for PCL-726:
      [0] - IO Base
      [2]...[7] - D/A output range for channel 1-6:
 		0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
 		4: 4-20mA, 5: unknown (external reference)

     Options for PCL-727:
      [0] - IO Base
      [2]...[13] - D/A output range for channel 1-12:
 		0: 0-5V, 1: 0-10V, 2: +/-5V,
 		3: 4-20mA

     Options for PCL-728 and ACL-6128:
      [0] - IO Base
      [2], [3] - D/A output range for channel 1 and 2:
 		0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
 		4: 4-20mA, 5: 0-20mA

     Options for ACL-6126:
      [0] - IO Base
      [1] - IRQ (0=disable, 3, 5, 6, 7, 9, 10, 11, 12, 15) (currently ignored)
      [2]...[7] - D/A output range for channel 1-6:
 		0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
 		4: 4-20mA
 */

 /*
     Thanks to Circuit Specialists for having programming info (!) on
     their web page.  (http://www.cir.com/)
 */

 #include "../comedidev.h"

 #include <linux/ioport.h>

 #undef ACL6126_IRQ		/* no interrupt support (yet) */

 #define PCL726_SIZE 16
 #define PCL727_SIZE 32
 #define PCL728_SIZE 8

 #define PCL726_DAC0_HI 0
 #define PCL726_DAC0_LO 1

 #define PCL726_DO_HI 12
 #define PCL726_DO_LO 13
 #define PCL726_DI_HI 14
 #define PCL726_DI_LO 15

 #define PCL727_DO_HI 24
 #define PCL727_DO_LO 25
 #define PCL727_DI_HI  0
 #define PCL727_DI_LO  1

 static const struct comedi_lrange range_4_20mA = { 1, {RANGE_mA(4, 20)} };
 static const struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };

 static const struct comedi_lrange *const rangelist_726[] = {
 	&range_unipolar5, &range_unipolar10,
 	&range_bipolar5, &range_bipolar10,
 	&range_4_20mA, &range_unknown
 };

 static const struct comedi_lrange *const rangelist_727[] = {
 	&range_unipolar5, &range_unipolar10,
 	&range_bipolar5,
 	&range_4_20mA
 };

 static const struct comedi_lrange *const rangelist_728[] = {
 	&range_unipolar5, &range_unipolar10,
 	&range_bipolar5, &range_bipolar10,
 	&range_4_20mA, &range_0_20mA
 };

 static int pcl726_attach(struct comedi_device *dev,
 			 struct comedi_devconfig *it);
 static int pcl726_detach(struct comedi_device *dev);

 struct pcl726_board {

 	const char *name;	/*  driver name */
 	int n_aochan;		/*  num of D/A chans */
 	int num_of_ranges;	/*  num of ranges */
 	unsigned int IRQbits;	/*  allowed interrupts */
 	unsigned int io_range;	/*  len of IO space */
 	char have_dio;		/*  1=card have DI/DO ports */
 	int di_hi;		/*  ports for DI/DO operations */
 	int di_lo;
 	int do_hi;
 	int do_lo;
 	const struct comedi_lrange *const *range_type_list;
 	/*  list of supported ranges */
 };

 static const struct pcl726_board boardtypes[] = {
 	{"pcl726", 6, 6, 0x0000, PCL726_SIZE, 1,
 	 PCL726_DI_HI, PCL726_DI_LO, PCL726_DO_HI, PCL726_DO_LO,
 	 &rangelist_726[0],},
 	{"pcl727", 12, 4, 0x0000, PCL727_SIZE, 1,
 	 PCL727_DI_HI, PCL727_DI_LO, PCL727_DO_HI, PCL727_DO_LO,
 	 &rangelist_727[0],},
 	{"pcl728", 2, 6, 0x0000, PCL728_SIZE, 0,
 	 0, 0, 0, 0,
 	 &rangelist_728[0],},
 	{"acl6126", 6, 5, 0x96e8, PCL726_SIZE, 1,
 	 PCL726_DI_HI, PCL726_DI_LO, PCL726_DO_HI, PCL726_DO_LO,
 	 &rangelist_726[0],},
 	{"acl6128", 2, 6, 0x0000, PCL728_SIZE, 0,
 	 0, 0, 0, 0,
 	 &rangelist_728[0],},
 };

 #define n_boardtypes (sizeof(boardtypes)/sizeof(struct pcl726_board))
 #define this_board ((const struct pcl726_board *)dev->board_ptr)

 static struct comedi_driver driver_pcl726 = {
 	.driver_name = "pcl726",
 	.module = THIS_MODULE,
 	.attach = pcl726_attach,
 	.detach = pcl726_detach,
 	.board_name = &boardtypes[0].name,
 	.num_names = n_boardtypes,
 	.offset = sizeof(struct pcl726_board),
 };

 COMEDI_INITCLEANUP(driver_pcl726);

 struct pcl726_private {

 	int bipolar[12];
 	const struct comedi_lrange *rangelist[12];
 	unsigned int ao_readback[12];
 };

 #define devpriv ((struct pcl726_private *)dev->private)

 static int pcl726_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s,
 			  struct comedi_insn *insn, unsigned int *data)
 {
 	int hi, lo;
 	int n;
 	int chan = CR_CHAN(insn->chanspec);

 	for (n = 0; n < insn->n; n++) {
 		lo = data[n] & 0xff;
 		hi = (data[n] >> 8) & 0xf;
 		if (devpriv->bipolar[chan])
 			hi ^= 0x8;
 		/*
 		 * the programming info did not say which order
 		 * to write bytes.  switch the order of the next
 		 * two lines if you get glitches.
 		 */
 		outb(hi, dev->iobase + PCL726_DAC0_HI + 2 * chan);
 		outb(lo, dev->iobase + PCL726_DAC0_LO + 2 * chan);
 		devpriv->ao_readback[chan] = data[n];
 	}

 	return n;
 }

 static int pcl726_ao_insn_read(struct comedi_device *dev,
 			       struct comedi_subdevice *s,
 			       struct comedi_insn *insn, unsigned int *data)
 {
 	int chan = CR_CHAN(insn->chanspec);
 	int n;

 	for (n = 0; n < insn->n; n++)
 		data[n] = devpriv->ao_readback[chan];
 	return n;
 }

 static int pcl726_di_insn_bits(struct comedi_device *dev,
 			       struct comedi_subdevice *s,
 			       struct comedi_insn *insn, unsigned int *data)
 {
 	if (insn->n != 2)
 		return -EINVAL;

 	data[1] = inb(dev->iobase + this_board->di_lo) |
 	    (inb(dev->iobase + this_board->di_hi) << 8);

 	return 2;
 }

 static int pcl726_do_insn_bits(struct comedi_device *dev,
 			       struct comedi_subdevice *s,
 			       struct comedi_insn *insn, unsigned int *data)
 {
 	if (insn->n != 2)
 		return -EINVAL;

 	if (data[0]) {
 		s->state &= ~data[0];
 		s->state |= data[0] & data[1];
 	}
 	if (data[1] & 0x00ff)
 		outb(s->state & 0xff, dev->iobase + this_board->do_lo);
 	if (data[1] & 0xff00)
 		outb((s->state >> 8), dev->iobase + this_board->do_hi);

 	data[1] = s->state;

 	return 2;
 }

 static int pcl726_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
 	struct comedi_subdevice *s;
 	unsigned long iobase;
 	unsigned int iorange;
 	int ret, i;
 #ifdef ACL6126_IRQ
 	unsigned int irq;
 #endif

 	iobase = it->options[0];
 	iorange = this_board->io_range;
 	printk(KERN_WARNING "comedi%d: pcl726: board=%s, 0x%03lx ", dev->minor,
 	       this_board->name, iobase);
 	if (!request_region(iobase, iorange, "pcl726")) {
 		printk(KERN_WARNING "I/O port conflict\n");
 		return -EIO;
 	}

 	dev->iobase = iobase;

 	dev->board_name = this_board->name;

 	ret = alloc_private(dev, sizeof(struct pcl726_private));
 	if (ret < 0)
 		return -ENOMEM;

 	for (i = 0; i < 12; i++) {
 		devpriv->bipolar[i] = 0;
 		devpriv->rangelist[i] = &range_unknown;
 	}

 #ifdef ACL6126_IRQ
 	irq = 0;
 	if (boardtypes[board].IRQbits != 0) {	/* board support IRQ */
 		irq = it->options[1];
 		devpriv->first_chan = 2;
 		if (irq) {	/* we want to use IRQ */
 			if (((1 << irq) & boardtypes[board].IRQbits) == 0) {
 				printk(KERN_WARNING
 					", IRQ %d is out of allowed range,"
 					" DISABLING IT", irq);
 				irq = 0;	/* Bad IRQ */
 			} else {
 				if (request_irq(irq, interrupt_pcl818, 0,
 						"pcl726", dev)) {
 					printk(KERN_WARNING
 						", unable to allocate IRQ %d,"
 						" DISABLING IT", irq);
 					irq = 0;	/* Can't use IRQ */
 				} else {
 					printk(", irq=%d", irq);
 				}
 			}
 		}
 	}

 	dev->irq = irq;
 #endif

 	printk("\n");

 	ret = alloc_subdevices(dev, 3);
 	if (ret < 0)
 		return ret;

 	s = dev->subdevices + 0;
 	/* ao */
 	s->type = COMEDI_SUBD_AO;
 	s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
 	s->n_chan = this_board->n_aochan;
 	s->maxdata = 0xfff;
 	s->len_chanlist = 1;
 	s->insn_write = pcl726_ao_insn;
 	s->insn_read = pcl726_ao_insn_read;
 	s->range_table_list = devpriv->rangelist;
 	for (i = 0; i < this_board->n_aochan; i++) {
 		int j;

 		j = it->options[2 + 1];
 		if ((j < 0) || (j >= this_board->num_of_ranges)) {
 			printk
 			    ("Invalid range for channel %d! Must be 0<=%d<%d\n",
 			     i, j, this_board->num_of_ranges - 1);
 			j = 0;
 		}
 		devpriv->rangelist[i] = this_board->range_type_list[j];
 		if (devpriv->rangelist[i]->range[0].min ==
 		    -devpriv->rangelist[i]->range[0].max)
 			devpriv->bipolar[i] = 1;	/* bipolar range */
 	}

 	s = dev->subdevices + 1;
 	/* di */
 	if (!this_board->have_dio) {
 		s->type = COMEDI_SUBD_UNUSED;
 	} else {
 		s->type = COMEDI_SUBD_DI;
 		s->subdev_flags = SDF_READABLE | SDF_GROUND;
 		s->n_chan = 16;
 		s->maxdata = 1;
 		s->len_chanlist = 1;
 		s->insn_bits = pcl726_di_insn_bits;
 		s->range_table = &range_digital;
 	}

 	s = dev->subdevices + 2;
 	/* do */
 	if (!this_board->have_dio) {
 		s->type = COMEDI_SUBD_UNUSED;
 	} else {
 		s->type = COMEDI_SUBD_DO;
 		s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
 		s->n_chan = 16;
 		s->maxdata = 1;
 		s->len_chanlist = 1;
 		s->insn_bits = pcl726_do_insn_bits;
 		s->range_table = &range_digital;
 	}

 	return 0;
 }

 static int pcl726_detach(struct comedi_device *dev)
 {
 /* printk("comedi%d: pcl726: remove\n",dev->minor); */

 #ifdef ACL6126_IRQ
 	if (dev->irq)
 		free_irq(dev->irq, dev);
 #endif

 	if (dev->iobase)
 		release_region(dev->iobase, this_board->io_range);

 	return 0;
 }
	/*
	comedi/drivers/pcl726.c

	hardware driver for Advantech cards:
	card: PCL-726, PCL-727, PCL-728
	driver: pcl726, pcl727, pcl728
	and for ADLink cards:
	card: ACL-6126, ACL-6128
	driver: acl6126, acl6128

	COMEDI - Linux Control and Measurement Device Interface
	Copyright (C) 1998 David A. Schleef <ds@schleef.org>

	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., 675 Mass Ave, Cambridge, MA 02139, USA.

	*/
	/*
	Driver: pcl726
	Description: Advantech PCL-726 & compatibles
	Author: ds
	Status: untested
	Devices: [Advantech] PCL-726 (pcl726), PCL-727 (pcl727), PCL-728 (pcl728),
	[ADLink] ACL-6126 (acl6126), ACL-6128 (acl6128)

	Interrupts are not supported.

	Options for PCL-726:
	[0] - IO Base
	[2]...[7] - D/A output range for channel 1-6:
	0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
	4: 4-20mA, 5: unknown (external reference)

	Options for PCL-727:
	[0] - IO Base
	[2]...[13] - D/A output range for channel 1-12:
	0: 0-5V, 1: 0-10V, 2: +/-5V,
	3: 4-20mA

	Options for PCL-728 and ACL-6128:
	[0] - IO Base
	[2], [3] - D/A output range for channel 1 and 2:
	0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
	4: 4-20mA, 5: 0-20mA

	Options for ACL-6126:
	[0] - IO Base
	[1] - IRQ (0=disable, 3, 5, 6, 7, 9, 10, 11, 12, 15) (currently ignored)
	[2]...[7] - D/A output range for channel 1-6:
	0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
	4: 4-20mA
	*/

	/*
	Thanks to Circuit Specialists for having programming info (!) on
	their web page. (http://www.cir.com/)
	*/

	#include "../comedidev.h"

	#include <linux/ioport.h>

	#undef ACL6126_IRQ /* no interrupt support (yet) */

	#define PCL726_SIZE 16
	#define PCL727_SIZE 32
	#define PCL728_SIZE 8

	#define PCL726_DAC0_HI 0
	#define PCL726_DAC0_LO 1

	#define PCL726_DO_HI 12
	#define PCL726_DO_LO 13
	#define PCL726_DI_HI 14
	#define PCL726_DI_LO 15

	#define PCL727_DO_HI 24
	#define PCL727_DO_LO 25
	#define PCL727_DI_HI 0
	#define PCL727_DI_LO 1

	static const struct comedi_lrange range_4_20mA = { 1, {RANGE_mA(4, 20)} };
	static const struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };

	static const struct comedi_lrange *const rangelist_726[] = {
	&range_unipolar5, &range_unipolar10,
	&range_bipolar5, &range_bipolar10,
	&range_4_20mA, &range_unknown
	};

	static const struct comedi_lrange *const rangelist_727[] = {
	&range_unipolar5, &range_unipolar10,
	&range_bipolar5,
	&range_4_20mA
	};

	static const struct comedi_lrange *const rangelist_728[] = {
	&range_unipolar5, &range_unipolar10,
	&range_bipolar5, &range_bipolar10,
	&range_4_20mA, &range_0_20mA
	};

	static int pcl726_attach(struct comedi_device *dev,
	struct comedi_devconfig *it);
	static int pcl726_detach(struct comedi_device *dev);

	struct pcl726_board {

	const char name; / driver name */
	int n_aochan; /* num of D/A chans */
	int num_of_ranges; /* num of ranges */
	unsigned int IRQbits; /* allowed interrupts */
	unsigned int io_range; /* len of IO space */
	char have_dio; /* 1=card have DI/DO ports */
	int di_hi; /* ports for DI/DO operations */
	int di_lo;
	int do_hi;
	int do_lo;
	const struct comedi_lrange const range_type_list;
	/* list of supported ranges */
	};

	static const struct pcl726_board boardtypes[] = {
	{"pcl726", 6, 6, 0x0000, PCL726_SIZE, 1,
	PCL726_DI_HI, PCL726_DI_LO, PCL726_DO_HI, PCL726_DO_LO,
	&rangelist_726[0],},
	{"pcl727", 12, 4, 0x0000, PCL727_SIZE, 1,
	PCL727_DI_HI, PCL727_DI_LO, PCL727_DO_HI, PCL727_DO_LO,
	&rangelist_727[0],},
	{"pcl728", 2, 6, 0x0000, PCL728_SIZE, 0,
	0, 0, 0, 0,
	&rangelist_728[0],},
	{"acl6126", 6, 5, 0x96e8, PCL726_SIZE, 1,
	PCL726_DI_HI, PCL726_DI_LO, PCL726_DO_HI, PCL726_DO_LO,
	&rangelist_726[0],},
	{"acl6128", 2, 6, 0x0000, PCL728_SIZE, 0,
	0, 0, 0, 0,
	&rangelist_728[0],},
	};

	#define n_boardtypes (sizeof(boardtypes)/sizeof(struct pcl726_board))
	#define this_board ((const struct pcl726_board *)dev->board_ptr)

	static struct comedi_driver driver_pcl726 = {
	.driver_name = "pcl726",
	.module = THIS_MODULE,
	.attach = pcl726_attach,
	.detach = pcl726_detach,
	.board_name = &boardtypes[0].name,
	.num_names = n_boardtypes,
	.offset = sizeof(struct pcl726_board),
	};

	COMEDI_INITCLEANUP(driver_pcl726);

	struct pcl726_private {

	int bipolar[12];
	const struct comedi_lrange *rangelist[12];
	unsigned int ao_readback[12];
	};

	#define devpriv ((struct pcl726_private *)dev->private)

	static int pcl726_ao_insn(struct comedi_device dev, struct comedi_subdevice s,
	struct comedi_insn insn, unsigned int data)
	{
	int hi, lo;
	int n;
	int chan = CR_CHAN(insn->chanspec);

	for (n = 0; n < insn->n; n++) {
	lo = data[n] & 0xff;
	hi = (data[n] >> 8) & 0xf;
	if (devpriv->bipolar[chan])
	hi ^= 0x8;
	/*
	* the programming info did not say which order
	* to write bytes. switch the order of the next
	* two lines if you get glitches.
	*/
	outb(hi, dev->iobase + PCL726_DAC0_HI + 2 * chan);
	outb(lo, dev->iobase + PCL726_DAC0_LO + 2 * chan);
	devpriv->ao_readback[chan] = data[n];
	}

	return n;
	}

	static int pcl726_ao_insn_read(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn insn, unsigned int data)
	{
	int chan = CR_CHAN(insn->chanspec);
	int n;

	for (n = 0; n < insn->n; n++)
	data[n] = devpriv->ao_readback[chan];
	return n;
	}

	static int pcl726_di_insn_bits(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn insn, unsigned int data)
	{
	if (insn->n != 2)
	return -EINVAL;

	data[1] = inb(dev->iobase + this_board->di_lo) \|
	(inb(dev->iobase + this_board->di_hi) << 8);

	return 2;
	}

	static int pcl726_do_insn_bits(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn insn, unsigned int data)
	{
	if (insn->n != 2)
	return -EINVAL;

	if (data[0]) {
	s->state &= ~data[0];
	s->state \|= data[0] & data[1];
	}
	if (data[1] & 0x00ff)
	outb(s->state & 0xff, dev->iobase + this_board->do_lo);
	if (data[1] & 0xff00)
	outb((s->state >> 8), dev->iobase + this_board->do_hi);

	data[1] = s->state;

	return 2;
	}

	static int pcl726_attach(struct comedi_device dev, struct comedi_devconfig it)
	{
	struct comedi_subdevice *s;
	unsigned long iobase;
	unsigned int iorange;
	int ret, i;
	#ifdef ACL6126_IRQ
	unsigned int irq;
	#endif

	iobase = it->options[0];
	iorange = this_board->io_range;
	printk(KERN_WARNING "comedi%d: pcl726: board=%s, 0x%03lx ", dev->minor,
	this_board->name, iobase);
	if (!request_region(iobase, iorange, "pcl726")) {
	printk(KERN_WARNING "I/O port conflict\n");
	return -EIO;
	}

	dev->iobase = iobase;

	dev->board_name = this_board->name;

	ret = alloc_private(dev, sizeof(struct pcl726_private));
	if (ret < 0)
	return -ENOMEM;

	for (i = 0; i < 12; i++) {
	devpriv->bipolar[i] = 0;
	devpriv->rangelist[i] = &range_unknown;
	}

	#ifdef ACL6126_IRQ
	irq = 0;
	if (boardtypes[board].IRQbits != 0) { /* board support IRQ */
	irq = it->options[1];
	devpriv->first_chan = 2;
	if (irq) { /* we want to use IRQ */
	if (((1 << irq) & boardtypes[board].IRQbits) == 0) {
	printk(KERN_WARNING
	", IRQ %d is out of allowed range,"
	" DISABLING IT", irq);
	irq = 0; /* Bad IRQ */
	} else {
	if (request_irq(irq, interrupt_pcl818, 0,
	"pcl726", dev)) {
	printk(KERN_WARNING
	", unable to allocate IRQ %d,"
	" DISABLING IT", irq);
	irq = 0; /* Can't use IRQ */
	} else {
	printk(", irq=%d", irq);
	}
	}
	}
	}

	dev->irq = irq;
	#endif

	printk("\n");

	ret = alloc_subdevices(dev, 3);
	if (ret < 0)
	return ret;

	s = dev->subdevices + 0;
	/* ao */
	s->type = COMEDI_SUBD_AO;
	s->subdev_flags = SDF_WRITABLE \| SDF_GROUND;
	s->n_chan = this_board->n_aochan;
	s->maxdata = 0xfff;
	s->len_chanlist = 1;
	s->insn_write = pcl726_ao_insn;
	s->insn_read = pcl726_ao_insn_read;
	s->range_table_list = devpriv->rangelist;
	for (i = 0; i < this_board->n_aochan; i++) {
	int j;

	j = it->options[2 + 1];
	if ((j < 0) \|\| (j >= this_board->num_of_ranges)) {
	printk
	("Invalid range for channel %d! Must be 0<=%d<%d\n",
	i, j, this_board->num_of_ranges - 1);
	j = 0;
	}
	devpriv->rangelist[i] = this_board->range_type_list[j];
	if (devpriv->rangelist[i]->range[0].min ==
	-devpriv->rangelist[i]->range[0].max)
	devpriv->bipolar[i] = 1; /* bipolar range */
	}

	s = dev->subdevices + 1;
	/* di */
	if (!this_board->have_dio) {
	s->type = COMEDI_SUBD_UNUSED;
	} else {
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE \| SDF_GROUND;
	s->n_chan = 16;
	s->maxdata = 1;
	s->len_chanlist = 1;
	s->insn_bits = pcl726_di_insn_bits;
	s->range_table = &range_digital;
	}

	s = dev->subdevices + 2;
	/* do */
	if (!this_board->have_dio) {
	s->type = COMEDI_SUBD_UNUSED;
	} else {
	s->type = COMEDI_SUBD_DO;
	s->subdev_flags = SDF_WRITABLE \| SDF_GROUND;
	s->n_chan = 16;
	s->maxdata = 1;
	s->len_chanlist = 1;
	s->insn_bits = pcl726_do_insn_bits;
	s->range_table = &range_digital;
	}

	return 0;
	}

	static int pcl726_detach(struct comedi_device *dev)
	{
	/* printk("comedi%d: pcl726: remove\n",dev->minor); */

	#ifdef ACL6126_IRQ
	if (dev->irq)
	free_irq(dev->irq, dev);
	#endif

	if (dev->iobase)
	release_region(dev->iobase, this_board->io_range);

	return 0;
	}