[deliverable/linux.git] / drivers / staging / comedi / drivers / adq12b.c

/*
    comedi/drivers/adq12b.c
    driver for MicroAxial ADQ12-B data acquisition and control card

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 2000 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: adq12b
Description: driver for MicroAxial ADQ12-B data acquisition and control card
Devices: [MicroAxial] ADQ12-B (adq12b)
Author: jeremy theler <thelerg@ib.cnea.gov.ar>
Updated: Thu, 21 Feb 2008 02:56:27 -0300
Status: works

Driver for the acquisition card ADQ12-B (without any add-on).

 - Analog input is subdevice 0 (16 channels single-ended or 8 differential)
 - Digital input is subdevice 1 (5 channels)
 - Digital output is subdevice 1 (8 channels)
 - The PACER is not supported in this version

If you do not specify any options, they will default to

  # comedi_config /dev/comedi0 adq12b 0x300,0,0

  option 1: I/O base address. The following table is provided as a help
   of the hardware jumpers.

         address            jumper JADR
          0x300                 1 (factory default)
          0x320                 2
          0x340                 3
          0x360                 4
          0x380                 5
          0x3A0                 6

  option 2: unipolar/bipolar ADC selection: 0 -> bipolar, 1 -> unipolar

        selection         comedi_config option            JUB
         bipolar                0                         2-3 (factory default)
         unipolar               1                         1-2

  option 3: single-ended/differential AI selection: 0 -> SE, 1 -> differential

        selection         comedi_config option     JCHA    JCHB
       single-ended             0                  1-2     1-2 (factory default)
       differential             1                  2-3     2-3


   written by jeremy theler <thelerg@ib.cnea.gov.ar>

   instituto balseiro
   comision nacional de energia atomica
   universidad nacional de cuyo
   argentina

   21-feb-2008
     + changed supported devices string (missused the [] and ())

   13-oct-2007
     + first try


*/

#include "../comedidev.h"

// address scheme (page 2.17 of the manual)
#define ADQ12B_SIZE     16

#define ADQ12B_CTREG    0x00
#define ADQ12B_STINR    0x00
#define ADQ12B_OUTBR    0x04
#define ADQ12B_ADLOW    0x08
#define ADQ12B_ADHIG    0x09
#define ADQ12B_CONT0    0x0c
#define ADQ12B_CONT1    0x0d
#define ADQ12B_CONT2    0x0e
#define ADQ12B_COWORD   0x0f

// mask of the bit at STINR to check end of conversion
#define ADQ12B_EOC     0x20

#define TIMEOUT        20

// available ranges through the PGA gains
static const struct comedi_lrange range_adq12b_ai_bipolar = { 4, {
        BIP_RANGE( 5 ),
        BIP_RANGE( 2 ),
        BIP_RANGE( 1 ),
        BIP_RANGE( 0.5 )
}};

static const struct comedi_lrange range_adq12b_ai_unipolar = { 4, {
        UNI_RANGE( 5 ),
        UNI_RANGE( 2 ),
        UNI_RANGE( 1 ),
        UNI_RANGE( 0.5 )
}};


typedef struct adq12b_board_struct{
        const char *name;
        int ai_se_chans;
        int ai_diff_chans;
        int ai_bits;
        int di_chans;
        int do_chans;
}adq12b_board;

static const adq12b_board adq12b_boards[] = {
        {
        name:           "adq12b",
        ai_se_chans:    16,
        ai_diff_chans:  8,
        ai_bits:        12,
        di_chans:       5,
        do_chans:       8
        }
// potentially, more adq-based deviced will be added
/*,
        name:           "adq12b",
        ai_chans:       16,  // this is just for reference, hardcoded again later
        ai_bits:        12,
        di_chans:       8,
        do_chans:       5
        }*/
};

#define thisboard ((const adq12b_board *)dev->board_ptr)

typedef struct{
        int unipolar;          /* option 2 of comedi_config (1 is iobase) */
        int differential;      /* option 3 of comedi_config */
        int last_channel;
        int last_range;
        unsigned int digital_state;
 }adq12b_private;

#define devpriv ((adq12b_private *)dev->private)

/*
 * The struct comedi_driver structure tells the Comedi core module
 * which functions to call to configure/deconfigure (attach/detach)
 * the board, and also about the kernel module that contains
 * the device code.
 */
static int adq12b_attach(struct comedi_device *dev,comedi_devconfig *it);
static int adq12b_detach(struct comedi_device *dev);
static struct comedi_driver driver_adq12b={
        driver_name:    "adq12b",
        module:         THIS_MODULE,
        attach:         adq12b_attach,
        detach:         adq12b_detach,
        board_name:     &adq12b_boards[0].name,
        offset:         sizeof(adq12b_board),
        num_names:      sizeof(adq12b_boards) / sizeof(adq12b_board),
};

static int adq12b_ai_rinsn(struct comedi_device *dev,struct comedi_subdevice *s,struct comedi_insn *insn,unsigned int *data);
static int adq12b_di_insn_bits(struct comedi_device *dev,struct comedi_subdevice *s, struct comedi_insn *insn,unsigned int *data);
static int adq12b_do_insn_bits(struct comedi_device *dev,struct comedi_subdevice *s, struct comedi_insn *insn,unsigned int *data);

/*
 * Attach is called by the Comedi core to configure the driver
 * for a particular board.  If you specified a board_name array
 * in the driver structure, dev->board_ptr contains that
 * address.
 */
static int adq12b_attach(struct comedi_device *dev,comedi_devconfig *it)
{
        struct comedi_subdevice *s;
        unsigned long iobase;
        int unipolar, differential;

        iobase = it->options[0];
        unipolar = it->options[1];
        differential = it->options[2];

        printk("comedi%d: adq12b called with options base=0x%03lx, %s and %s\n",dev->minor, iobase, (unipolar==1)?"unipolar":"bipolar", (differential==1)?"differential":"single-ended");

        /* if no address was specified, try the default 0x300 */
        if (iobase == 0) {
          printk("comedi%d: adq12b warning: I/O base address not specified. Trying the default 0x300.\n", dev->minor);
          iobase = 0x300;
        }

        printk("comedi%d: adq12b: 0x%04lx ", dev->minor, iobase);
        if (!request_region(iobase, ADQ12B_SIZE, "adq12b")) {
          printk("I/O port conflict\n");
          return -EIO;
        }
        dev->iobase = iobase;

/*
 * Initialize dev->board_name.  Note that we can use the "thisboard"
 * macro now, since we just initialized it in the last line.
 */
        dev->board_name = thisboard->name;

/*
 * Allocate the private structure area.  alloc_private() is a
 * convenient macro defined in comedidev.h.
 */
        if(alloc_private(dev, sizeof(adq12b_private)) < 0)
          return -ENOMEM;

/* fill in devpriv structure */
        devpriv->unipolar = unipolar;
        devpriv->differential = differential;
	devpriv->digital_state = 0;
/* initialize channel and range to -1 so we make sure we always write
   at least once to the CTREG in the instruction */
        devpriv->last_channel = -1;
        devpriv->last_range = -1;


/*
 * Allocate the subdevice structures.  alloc_subdevice() is a
 * convenient macro defined in comedidev.h.
 */
        if(alloc_subdevices(dev, 3)<0)
           return -ENOMEM;

        s = dev->subdevices+0;
        /* analog input subdevice */
        s->type = COMEDI_SUBD_AI;
        if (differential) {
          s->subdev_flags = SDF_READABLE|SDF_GROUND|SDF_DIFF;
          s->n_chan = thisboard->ai_diff_chans;
        } else {
          s->subdev_flags = SDF_READABLE|SDF_GROUND;
          s->n_chan = thisboard->ai_se_chans;
        }

        if (unipolar) {
          s->range_table = &range_adq12b_ai_unipolar;
        } else {
          s->range_table = &range_adq12b_ai_bipolar;
        }

        s->maxdata = (1 << thisboard->ai_bits)-1;


        s->len_chanlist = 4;  /* This is the maximum chanlist length that
                                 the board can handle */
        s->insn_read = adq12b_ai_rinsn;


        s = dev->subdevices+1;
        /* digital input subdevice */
        s->type = COMEDI_SUBD_DI;
        s->subdev_flags = SDF_READABLE;
        s->n_chan=thisboard->di_chans;
        s->maxdata = 1;
        s->range_table = &range_digital;
        s->insn_bits = adq12b_di_insn_bits;

        s = dev->subdevices+2;
        /* digital output subdevice */
        s->type = COMEDI_SUBD_DO;
        s->subdev_flags = SDF_WRITABLE;
        s->n_chan = thisboard->do_chans;
        s->maxdata = 1;
        s->range_table = &range_digital;
        s->insn_bits = adq12b_do_insn_bits;


        printk("attached\n");

        return 0;
}


/*
 * _detach is called to deconfigure a device.  It should deallocate
 * resources.
 * This function is also called when _attach() fails, so it should be
 * careful not to release resources that were not necessarily
 * allocated by _attach().  dev->private and dev->subdevices are
 * deallocated automatically by the core.
 */
static int adq12b_detach(struct comedi_device *dev)
{
        if (dev->iobase)
          release_region(dev->iobase, ADQ12B_SIZE);

        kfree(devpriv);

        printk("comedi%d: adq12b: removed\n",dev->minor);

        return 0;
}

/*
 * "instructions" read/write data in "one-shot" or "software-triggered"
 * mode.
 */

static int adq12b_ai_rinsn(struct comedi_device *dev,struct comedi_subdevice *s,struct comedi_insn *insn,unsigned int *data)
{
        int n, i;
        int range, channel;
        unsigned char hi, lo, status;

        /* change channel and range only if it is different from the previous */
        range = CR_RANGE(insn->chanspec);
        channel = CR_CHAN(insn->chanspec);
        if (channel != devpriv->last_channel || range != devpriv->last_range) {
          outb((range << 4) | channel, dev->iobase + ADQ12B_CTREG);
          comedi_udelay(50);   /* wait for the mux to settle */
        }

        /* trigger conversion */
        status = inb(dev->iobase + ADQ12B_ADLOW);

        /* convert n samples */
        for(n=0; n < insn->n; n++){

          /* wait for end of convertion */
	  i = 0;
          do {
//            comedi_udelay(1);
	    status = inb(dev->iobase + ADQ12B_STINR);
            status = status & ADQ12B_EOC;
          } while (status == 0 && ++i < TIMEOUT);
//          } while (++i < 10);

          /* read data */
          hi = inb(dev->iobase + ADQ12B_ADHIG);
          lo = inb(dev->iobase + ADQ12B_ADLOW);

          //rt_printk("debug: chan=%d range=%d status=%d hi=%d lo=%d\n", channel, range, status,  hi, lo);
          data[n] = (hi << 8) | lo;

        }

        /* return the number of samples read/written */
        return n;
}


static int adq12b_di_insn_bits(struct comedi_device *dev,struct comedi_subdevice *s, 	struct comedi_insn *insn,unsigned int *data)
{

        /* only bits 0-4 have information about digital inputs */
        data[1] = (inb(dev->iobase+ADQ12B_STINR) & (0x1f));

        return 2;
}


static int adq12b_do_insn_bits(struct comedi_device *dev,struct comedi_subdevice *s, 	struct comedi_insn *insn,unsigned int *data)
{
        int channel;

	for (channel = 0; channel < 8; channel++)
	  if (((data[0]>>channel) & 0x01) != 0)
            outb((((data[1]>>channel)&0x01)<<3) | channel, dev->iobase + ADQ12B_OUTBR);

        /* store information to retrieve when asked for reading */
        if (data[0]) {
          devpriv->digital_state &= ~data[0];
          devpriv->digital_state |= (data[0]&data[1]);
        }

        data[1] = devpriv->digital_state;

        return 2;
}


/*
 * A convenient macro that defines init_module() and cleanup_module(),
 * as necessary.
 */
COMEDI_INITCLEANUP(driver_adq12b);
Commit	Line	Data
27b3f921 JT	1	/*
	2	comedi/drivers/adq12b.c
	3	driver for MicroAxial ADQ12-B data acquisition and control card
	4
	5	COMEDI - Linux Control and Measurement Device Interface
	6	Copyright (C) 2000 David A. Schleef <ds@schleef.org>
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
	20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	21
	22	*/
	23	/*
	24	Driver: adq12b
	25	Description: driver for MicroAxial ADQ12-B data acquisition and control card
	26	Devices: [MicroAxial] ADQ12-B (adq12b)
	27	Author: jeremy theler <thelerg@ib.cnea.gov.ar>
	28	Updated: Thu, 21 Feb 2008 02:56:27 -0300
	29	Status: works
	30
	31	Driver for the acquisition card ADQ12-B (without any add-on).
	32
	33	- Analog input is subdevice 0 (16 channels single-ended or 8 differential)
	34	- Digital input is subdevice 1 (5 channels)
	35	- Digital output is subdevice 1 (8 channels)
	36	- The PACER is not supported in this version
	37
	38	If you do not specify any options, they will default to
	39
	40	# comedi_config /dev/comedi0 adq12b 0x300,0,0
	41
	42	option 1: I/O base address. The following table is provided as a help
	43	of the hardware jumpers.
	44
	45	address jumper JADR
	46	0x300 1 (factory default)
	47	0x320 2
	48	0x340 3
	49	0x360 4
	50	0x380 5
	51	0x3A0 6
	52
	53	option 2: unipolar/bipolar ADC selection: 0 -> bipolar, 1 -> unipolar
	54
	55	selection comedi_config option JUB
	56	bipolar 0 2-3 (factory default)
	57	unipolar 1 1-2
	58
	59	option 3: single-ended/differential AI selection: 0 -> SE, 1 -> differential
	60
	61	selection comedi_config option JCHA JCHB
	62	single-ended 0 1-2 1-2 (factory default)
	63	differential 1 2-3 2-3
	64
65
66	written by jeremy theler <thelerg@ib.cnea.gov.ar>
67
68	instituto balseiro
69	comision nacional de energia atomica
70	universidad nacional de cuyo
71	argentina
72
73	21-feb-2008
74	+ changed supported devices string (missused the [] and ())
75
76	13-oct-2007
77	+ first try
78
79
80	*/
81
82	#include "../comedidev.h"
83
84	// address scheme (page 2.17 of the manual)
85	#define ADQ12B_SIZE 16
86
87	#define ADQ12B_CTREG 0x00
88	#define ADQ12B_STINR 0x00
89	#define ADQ12B_OUTBR 0x04
90	#define ADQ12B_ADLOW 0x08
91	#define ADQ12B_ADHIG 0x09
92	#define ADQ12B_CONT0 0x0c
93	#define ADQ12B_CONT1 0x0d
94	#define ADQ12B_CONT2 0x0e
95	#define ADQ12B_COWORD 0x0f
96
97	// mask of the bit at STINR to check end of conversion
98	#define ADQ12B_EOC 0x20
99
100	#define TIMEOUT 20
101
102	// available ranges through the PGA gains
9ced1de6	103	static const struct comedi_lrange range_adq12b_ai_bipolar = { 4, {
27b3f921 JT	104	BIP_RANGE( 5 ),
	105	BIP_RANGE( 2 ),
	106	BIP_RANGE( 1 ),
	107	BIP_RANGE( 0.5 )
	108	}};
	109
9ced1de6	110	static const struct comedi_lrange range_adq12b_ai_unipolar = { 4, {
27b3f921 JT	111	UNI_RANGE( 5 ),
	112	UNI_RANGE( 2 ),
	113	UNI_RANGE( 1 ),
	114	UNI_RANGE( 0.5 )
	115	}};
	116
	117
	118
	119	typedef struct adq12b_board_struct{
	120	const char *name;
	121	int ai_se_chans;
	122	int ai_diff_chans;
	123	int ai_bits;
	124	int di_chans;
	125	int do_chans;
	126	}adq12b_board;
	127
	128	static const adq12b_board adq12b_boards[] = {
	129	{
	130	name: "adq12b",
	131	ai_se_chans: 16,
	132	ai_diff_chans: 8,
	133	ai_bits: 12,
	134	di_chans: 5,
	135	do_chans: 8
	136	}
	137	// potentially, more adq-based deviced will be added
	138	/*,
	139	name: "adq12b",
	140	ai_chans: 16, // this is just for reference, hardcoded again later
	141	ai_bits: 12,
	142	di_chans: 8,
	143	do_chans: 5
	144	}*/
	145	};
	146
	147	#define thisboard ((const adq12b_board *)dev->board_ptr)
	148
	149	typedef struct{
	150	int unipolar; /* option 2 of comedi_config (1 is iobase) */
	151	int differential; /* option 3 of comedi_config */
	152	int last_channel;
	153	int last_range;
790c5541	154	unsigned int digital_state;
27b3f921 JT	155	}adq12b_private;
	156
	157	#define devpriv ((adq12b_private *)dev->private)
	158
	159	/*
139dfbdf	160	* The struct comedi_driver structure tells the Comedi core module
27b3f921 JT	161	* which functions to call to configure/deconfigure (attach/detach)
	162	* the board, and also about the kernel module that contains
	163	* the device code.
	164	*/
71b5f4f1 BP	165	static int adq12b_attach(struct comedi_device dev,comedi_devconfig it);
71b5f4f1 BP	166	static int adq12b_detach(struct comedi_device *dev);
139dfbdf	167	static struct comedi_driver driver_adq12b={
27b3f921 JT	168	driver_name: "adq12b",
	169	module: THIS_MODULE,
	170	attach: adq12b_attach,
	171	detach: adq12b_detach,
	172	board_name: &adq12b_boards[0].name,
	173	offset: sizeof(adq12b_board),
	174	num_names: sizeof(adq12b_boards) / sizeof(adq12b_board),
	175	};
	176
90035c08 BP	177	static int adq12b_ai_rinsn(struct comedi_device dev,struct comedi_subdevice s,struct comedi_insn insn,unsigned int data);
	178	static int adq12b_di_insn_bits(struct comedi_device dev,struct comedi_subdevice s, struct comedi_insn insn,unsigned int data);
	179	static int adq12b_do_insn_bits(struct comedi_device dev,struct comedi_subdevice s, struct comedi_insn insn,unsigned int data);
27b3f921 JT	180
	181	/*
	182	* Attach is called by the Comedi core to configure the driver
	183	* for a particular board. If you specified a board_name array
	184	* in the driver structure, dev->board_ptr contains that
	185	* address.
	186	*/
71b5f4f1	187	static int adq12b_attach(struct comedi_device dev,comedi_devconfig it)
27b3f921	188	{
34c43922	189	struct comedi_subdevice *s;
27b3f921 JT	190	unsigned long iobase;
	191	int unipolar, differential;
	192
	193	iobase = it->options[0];
	194	unipolar = it->options[1];
	195	differential = it->options[2];
	196
	197	printk("comedi%d: adq12b called with options base=0x%03lx, %s and %s\n",dev->minor, iobase, (unipolar==1)?"unipolar":"bipolar", (differential==1)?"differential":"single-ended");
	198
	199	/* if no address was specified, try the default 0x300 */
	200	if (iobase == 0) {
	201	printk("comedi%d: adq12b warning: I/O base address not specified. Trying the default 0x300.\n", dev->minor);
	202	iobase = 0x300;
	203	}
	204
	205	printk("comedi%d: adq12b: 0x%04lx ", dev->minor, iobase);
	206	if (!request_region(iobase, ADQ12B_SIZE, "adq12b")) {
	207	printk("I/O port conflict\n");
	208	return -EIO;
	209	}
	210	dev->iobase = iobase;
	211
	212	/*
	213	* Initialize dev->board_name. Note that we can use the "thisboard"
	214	* macro now, since we just initialized it in the last line.
	215	*/
	216	dev->board_name = thisboard->name;
	217
	218	/*
	219	* Allocate the private structure area. alloc_private() is a
	220	* convenient macro defined in comedidev.h.
	221	*/
	222	if(alloc_private(dev, sizeof(adq12b_private)) < 0)
	223	return -ENOMEM;
	224
	225	/* fill in devpriv structure */
	226	devpriv->unipolar = unipolar;
	227	devpriv->differential = differential;
	228	devpriv->digital_state = 0;
	229	/* initialize channel and range to -1 so we make sure we always write
	230	at least once to the CTREG in the instruction */
	231	devpriv->last_channel = -1;
	232	devpriv->last_range = -1;
	233
	234
	235	/*
	236	* Allocate the subdevice structures. alloc_subdevice() is a
	237	* convenient macro defined in comedidev.h.
	238	*/
	239	if(alloc_subdevices(dev, 3)<0)
	240	return -ENOMEM;
	241
	242	s = dev->subdevices+0;
	243	/* analog input subdevice */
	244	s->type = COMEDI_SUBD_AI;
	245	if (differential) {
	246	s->subdev_flags = SDF_READABLE\|SDF_GROUND\|SDF_DIFF;
	247	s->n_chan = thisboard->ai_diff_chans;
	248	} else {
	249	s->subdev_flags = SDF_READABLE\|SDF_GROUND;
	250	s->n_chan = thisboard->ai_se_chans;
	251	}
	252
	253	if (unipolar) {
254	s->range_table = &range_adq12b_ai_unipolar;
255	} else {
256	s->range_table = &range_adq12b_ai_bipolar;
257	}
258
259	s->maxdata = (1 << thisboard->ai_bits)-1;
260
261
262	s->len_chanlist = 4; /* This is the maximum chanlist length that
263	the board can handle */
264	s->insn_read = adq12b_ai_rinsn;
265
266
267	s = dev->subdevices+1;
268	/* digital input subdevice */
269	s->type = COMEDI_SUBD_DI;
270	s->subdev_flags = SDF_READABLE;
271	s->n_chan=thisboard->di_chans;
272	s->maxdata = 1;
273	s->range_table = &range_digital;
274	s->insn_bits = adq12b_di_insn_bits;
275
276	s = dev->subdevices+2;
277	/* digital output subdevice */
278	s->type = COMEDI_SUBD_DO;
279	s->subdev_flags = SDF_WRITABLE;
280	s->n_chan = thisboard->do_chans;
281	s->maxdata = 1;
282	s->range_table = &range_digital;
283	s->insn_bits = adq12b_do_insn_bits;
284
285
286	printk("attached\n");
287
288	return 0;
289	}
290
291
292	/*
293	* _detach is called to deconfigure a device. It should deallocate
294	* resources.
295	* This function is also called when _attach() fails, so it should be
296	* careful not to release resources that were not necessarily
297	* allocated by _attach(). dev->private and dev->subdevices are
298	* deallocated automatically by the core.
299	*/
71b5f4f1	300	static int adq12b_detach(struct comedi_device *dev)
27b3f921 JT	301	{
	302	if (dev->iobase)
	303	release_region(dev->iobase, ADQ12B_SIZE);
	304
	305	kfree(devpriv);
	306
	307	printk("comedi%d: adq12b: removed\n",dev->minor);
	308
	309	return 0;
	310	}
	311
	312	/*
	313	* "instructions" read/write data in "one-shot" or "software-triggered"
	314	* mode.
	315	*/
	316
90035c08	317	static int adq12b_ai_rinsn(struct comedi_device dev,struct comedi_subdevice s,struct comedi_insn insn,unsigned int data)
27b3f921 JT	318	{
	319	int n, i;
	320	int range, channel;
	321	unsigned char hi, lo, status;
	322
	323	/* change channel and range only if it is different from the previous */
	324	range = CR_RANGE(insn->chanspec);
	325	channel = CR_CHAN(insn->chanspec);
	326	if (channel != devpriv->last_channel \|\| range != devpriv->last_range) {
	327	outb((range << 4) \| channel, dev->iobase + ADQ12B_CTREG);
	328	comedi_udelay(50); /* wait for the mux to settle */
	329	}
	330
	331	/* trigger conversion */
	332	status = inb(dev->iobase + ADQ12B_ADLOW);
	333
	334	/* convert n samples */
	335	for(n=0; n < insn->n; n++){
	336
	337	/* wait for end of convertion */
	338	i = 0;
	339	do {
	340	// comedi_udelay(1);
	341	status = inb(dev->iobase + ADQ12B_STINR);
	342	status = status & ADQ12B_EOC;
	343	} while (status == 0 && ++i < TIMEOUT);
	344	// } while (++i < 10);
	345
	346	/* read data */
	347	hi = inb(dev->iobase + ADQ12B_ADHIG);
	348	lo = inb(dev->iobase + ADQ12B_ADLOW);
	349
	350	//rt_printk("debug: chan=%d range=%d status=%d hi=%d lo=%d\n", channel, range, status, hi, lo);
	351	data[n] = (hi << 8) \| lo;
	352
	353	}
	354
	355	/* return the number of samples read/written */
	356	return n;
	357	}
	358
	359
90035c08	360	static int adq12b_di_insn_bits(struct comedi_device dev,struct comedi_subdevice s, struct comedi_insn insn,unsigned int data)
27b3f921 JT	361	{
	362
	363	/* only bits 0-4 have information about digital inputs */
	364	data[1] = (inb(dev->iobase+ADQ12B_STINR) & (0x1f));
	365
	366	return 2;
	367	}
	368
	369
90035c08	370	static int adq12b_do_insn_bits(struct comedi_device dev,struct comedi_subdevice s, struct comedi_insn insn,unsigned int data)
27b3f921 JT	371	{
	372	int channel;
	373
	374	for (channel = 0; channel < 8; channel++)
	375	if (((data[0]>>channel) & 0x01) != 0)
	376	outb((((data[1]>>channel)&0x01)<<3) \| channel, dev->iobase + ADQ12B_OUTBR);
	377
	378	/* store information to retrieve when asked for reading */
	379	if (data[0]) {
	380	devpriv->digital_state &= ~data[0];
	381	devpriv->digital_state \|= (data[0]&data[1]);
	382	}
	383
	384	data[1] = devpriv->digital_state;
	385
	386	return 2;
	387	}
	388
	389
	390	/*
	391	* A convenient macro that defines init_module() and cleanup_module(),
	392	* as necessary.
	393	*/
	394	COMEDI_INITCLEANUP(driver_adq12b);