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/*
* comedi/drivers/acl7225b.c
* Driver for Adlink NuDAQ ACL-7225b and clones
* José Luis Sánchez
*/
/*
Driver: acl7225b
Description: Adlink NuDAQ ACL-7225b & compatibles
Author: José Luis Sánchez (jsanchezv@teleline.es)
Status: testing
Devices: [Adlink] ACL-7225b (acl7225b), [ICP] P16R16DIO (p16r16dio)
*/
#include "../comedidev.h"
#include <linux/ioport.h>
#define ACL7225_SIZE 8 /* Requires 8 ioports, but only 4 are used */
#define P16R16DIO_SIZE 4
#define ACL7225_RIO_LO 0 /* Relays input/output low byte (R0-R7) */
#define ACL7225_RIO_HI 1 /* Relays input/output high byte (R8-R15) */
#define ACL7225_DI_LO 2 /* Digital input low byte (DI0-DI7) */
#define ACL7225_DI_HI 3 /* Digital input high byte (DI8-DI15) */
struct boardtype {
const char *name; /* driver name */
int io_range; /* len of I/O space */
};
#define this_board ((const struct boardtype *)dev->board_ptr)
static int acl7225b_do_insn(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[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 acl7225b_di_insn(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 + (unsigned long)s->private) |
(inb(dev->iobase + (unsigned long)s->private + 1) << 8);
return 2;
}
static int acl7225b_attach(struct comedi_device *dev,
struct comedi_devconfig *it)
{
struct comedi_subdevice *s;
int iobase, iorange;
iobase = it->options[0];
iorange = this_board->io_range;
printk(KERN_INFO "comedi%d: acl7225b: board=%s 0x%04x\n", dev->minor,
this_board->name, iobase);
if (!request_region(iobase, iorange, "acl7225b")) {
printk(KERN_ERR "comedi%d: request_region failed - I/O port conflict\n",
dev->minor);
return -EIO;
}
dev->board_name = this_board->name;
dev->iobase = iobase;
dev->irq = 0;
if (alloc_subdevices(dev, 3) < 0)
return -ENOMEM;
s = dev->subdevices + 0;
/* Relays outputs */
s->type = COMEDI_SUBD_DO;
s->subdev_flags = SDF_WRITABLE;
s->maxdata = 1;
s->n_chan = 16;
s->insn_bits = acl7225b_do_insn;
s->range_table = &range_digital;
s->private = (void *)ACL7225_RIO_LO;
s = dev->subdevices + 1;
/* Relays status */
s->type = COMEDI_SUBD_DI;
s->subdev_flags = SDF_READABLE;
s->maxdata = 1;
s->n_chan = 16;
s->insn_bits = acl7225b_di_insn;
s->range_table = &range_digital;
s->private = (void *)ACL7225_RIO_LO;
s = dev->subdevices + 2;
/* Isolated digital inputs */
s->type = COMEDI_SUBD_DI;
s->subdev_flags = SDF_READABLE;
s->maxdata = 1;
s->n_chan = 16;
s->insn_bits = acl7225b_di_insn;
s->range_table = &range_digital;
s->private = (void *)ACL7225_DI_LO;
return 0;
}
static void acl7225b_detach(struct comedi_device *dev)
{
if (dev->iobase)
release_region(dev->iobase, this_board->io_range);
}
static const struct boardtype boardtypes[] = {
{ "acl7225b", ACL7225_SIZE, },
{ "p16r16dio", P16R16DIO_SIZE, },
};
static struct comedi_driver acl7225b_driver = {
.driver_name = "acl7225b",
.module = THIS_MODULE,
.attach = acl7225b_attach,
.detach = acl7225b_detach,
.board_name = &boardtypes[0].name,
.num_names = ARRAY_SIZE(boardtypes),
.offset = sizeof(struct boardtype),
};
module_comedi_driver(acl7225b_driver);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
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