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r: 141423
b: refs/heads/master
c: 00a2243
h: refs/heads/master
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  141421: 7e0f22d
  141419: 18f2ddb
  141415: a2fe66c
  141407: e516fd8
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David Schleef authored and Greg Kroah-Hartman committed Apr 3, 2009
1 parent 5b154b9 commit fba4219
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refs/heads/master: 501d675db67e43cff47fa8138374679122baefb4
refs/heads/master: 00a224316fdc0e95c779534acde02579c16e327e
373 changes: 373 additions & 0 deletions trunk/drivers/staging/comedi/drivers/pcl726.c
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/*
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 comedi_lrange range_4_20mA = { 1, {RANGE_mA(4, 20)} };
static const comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };

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

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

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

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

typedef struct {
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 comedi_lrange *const *range_type_list; // list of supported ranges
} boardtype;

static const boardtype 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(boardtype))
#define this_board ((const boardtype *)dev->board_ptr)

static 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(boardtype),
};

COMEDI_INITCLEANUP(driver_pcl726);

typedef struct {
int bipolar[12];
const comedi_lrange *rangelist[12];
lsampl_t ao_readback[12];
} pcl726_private;
#define devpriv ((pcl726_private *)dev->private)

static int pcl726_ao_insn(comedi_device * dev, comedi_subdevice * s,
comedi_insn * insn, lsampl_t * 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(comedi_device * dev, comedi_subdevice * s,
comedi_insn * insn, lsampl_t * 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(comedi_device * dev, comedi_subdevice * s,
comedi_insn * insn, lsampl_t * 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(comedi_device * dev, comedi_subdevice * s,
comedi_insn * insn, lsampl_t * 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(comedi_device * dev, comedi_devconfig * it)
{
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("comedi%d: pcl726: board=%s, 0x%03lx ", dev->minor,
this_board->name, iobase);
if (!request_region(iobase, iorange, "pcl726")) {
printk("I/O port conflict\n");
return -EIO;
}

dev->iobase = iobase;

dev->board_name = this_board->name;

if ((ret = alloc_private(dev, sizeof(pcl726_private))) < 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) {
rt_printk
(", IRQ %d is out of allowed range, DISABLING IT",
irq);
irq = 0; /* Bad IRQ */
} else {
if (comedi_request_irq(irq, interrupt_pcl818, 0,
"pcl726", dev)) {
rt_printk
(", unable to allocate IRQ %d, DISABLING IT",
irq);
irq = 0; /* Can't use IRQ */
} else {
rt_printk(", irq=%d", irq);
}
}
}
}

dev->irq = irq;
#endif

printk("\n");

if ((ret = alloc_subdevices(dev, 3)) < 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(comedi_device * dev)
{
// printk("comedi%d: pcl726: remove\n",dev->minor);

#ifdef ACL6126_IRQ
if (dev->irq) {
comedi_free_irq(dev->irq, dev);
}
#endif

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

return 0;
}

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