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Staging: comedi: add pcl730 driver

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Driver for Advantech PCL-730 & compatibles

From: José Luis Sánchez <jsanchezv@teleline.es>
Cc: David Schleef <ds@schleef.org>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
José Luis Sánchez 2009-02-19 09:30:05 -08:00 committed by Greg Kroah-Hartman
parent 00a224316f
commit 96a2d5f0a1
1 changed files with 166 additions and 0 deletions
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166
drivers/staging/comedi/drivers/pcl730.c Normal file
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/*
* comedi/drivers/pcl730.c
* Driver for Advantech PCL-730 and clones
* José Luis Sánchez
*/
/*
Driver: pcl730
Description: Advantech PCL-730 (& compatibles)
Author: José Luis Sánchez (jsanchezv@teleline.es)
Status: untested
Devices: [Advantech] PCL-730 (pcl730), [ICP] ISO-730 (iso730),
[Adlink] ACL-7130 (acl7130)
Interrupts are not supported.
The ACL-7130 card have an 8254 timer/counter not supported by this driver.
*/
#include "../comedidev.h"
#include <linux/ioport.h>
#define PCL730_SIZE 4
#define ACL7130_SIZE 8
#define PCL730_IDIO_LO 0 /* Isolated Digital I/O low byte (ID0-ID7) */
#define PCL730_IDIO_HI 1 /* Isolated Digital I/O high byte (ID8-ID15) */
#define PCL730_DIO_LO 2 /* TTL Digital I/O low byte (D0-D7) */
#define PCL730_DIO_HI 3 /* TTL Digital I/O high byte (D8-D15) */
static int pcl730_attach(comedi_device * dev, comedi_devconfig * it);
static int pcl730_detach(comedi_device * dev);
typedef struct {
const char *name; // board name
unsigned int io_range; // len of I/O space
} boardtype;
static const boardtype boardtypes[] = {
{"pcl730", PCL730_SIZE,},
{"iso730", PCL730_SIZE,},
{"acl7130", ACL7130_SIZE,},
};
#define n_boardtypes (sizeof(boardtypes)/sizeof(boardtype))
#define this_board ((const boardtype *)dev->board_ptr)
static comedi_driver driver_pcl730 = {
driver_name:"pcl730",
module:THIS_MODULE,
attach:pcl730_attach,
detach:pcl730_detach,
board_name:&boardtypes[0].name,
num_names:n_boardtypes,
offset:sizeof(boardtype),
};
COMEDI_INITCLEANUP(driver_pcl730);
static int pcl730_do_insn(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[0] & 0x00ff)
outb(s->state & 0xff,
dev->iobase + ((unsigned long)s->private));
if (data[0] & 0xff00)
outb((s->state >> 8),
dev->iobase + ((unsigned long)s->private) + 1);
data[1] = s->state;
return 2;
}
static int pcl730_di_insn(comedi_device * dev, comedi_subdevice * s,
comedi_insn * insn, lsampl_t * data)
{
if (insn->n != 2)
return -EINVAL;
data[1] = inb(dev->iobase + ((unsigned long)s->private)) |
(inb(dev->iobase + ((unsigned long)s->private) + 1) << 8);
return 2;
}
static int pcl730_attach(comedi_device * dev, comedi_devconfig * it)
{
comedi_subdevice *s;
unsigned long iobase;
unsigned int iorange;
iobase = it->options[0];
iorange = this_board->io_range;
printk("comedi%d: pcl730: board=%s 0x%04lx ", dev->minor,
this_board->name, iobase);
if (!request_region(iobase, iorange, "pcl730")) {
printk("I/O port conflict\n");
return -EIO;
}
dev->board_name = this_board->name;
dev->iobase = iobase;
dev->irq = 0;
if (alloc_subdevices(dev, 4) < 0)
return -ENOMEM;
s = dev->subdevices + 0;
/* Isolated do */
s->type = COMEDI_SUBD_DO;
s->subdev_flags = SDF_WRITABLE;
s->maxdata = 1;
s->n_chan = 16;
s->insn_bits = pcl730_do_insn;
s->range_table = &range_digital;
s->private = (void *)PCL730_IDIO_LO;
s = dev->subdevices + 1;
/* Isolated di */
s->type = COMEDI_SUBD_DI;
s->subdev_flags = SDF_READABLE;
s->maxdata = 1;
s->n_chan = 16;
s->insn_bits = pcl730_di_insn;
s->range_table = &range_digital;
s->private = (void *)PCL730_IDIO_LO;
s = dev->subdevices + 2;
/* TTL do */
s->type = COMEDI_SUBD_DO;
s->subdev_flags = SDF_WRITABLE;
s->maxdata = 1;
s->n_chan = 16;
s->insn_bits = pcl730_do_insn;
s->range_table = &range_digital;
s->private = (void *)PCL730_DIO_LO;
s = dev->subdevices + 3;
/* TTL di */
s->type = COMEDI_SUBD_DI;
s->subdev_flags = SDF_READABLE;
s->maxdata = 1;
s->n_chan = 16;
s->insn_bits = pcl730_di_insn;
s->range_table = &range_digital;
s->private = (void *)PCL730_DIO_LO;
printk("\n");
return 0;
}
static int pcl730_detach(comedi_device * dev)
{
printk("comedi%d: pcl730: remove\n", dev->minor);
if (dev->iobase)
release_region(dev->iobase, this_board->io_range);
return 0;
}