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/*
comedi/drivers/aio_iiro_16.c
Driver for Access I/O Products PC-104 AIO-IIRO-16 Digital I/O board
Copyright (C) 2006 C&C Technologies, Inc.
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: aio_iiro_16
Description: Access I/O Products PC-104 IIRO16 Relay And Isolated Input Board
Author: Zachary Ware <zach.ware@cctechnol.com>
Devices:
[Access I/O] PC-104 AIO12-8
Status: experimental
Configuration Options:
[0] - I/O port base address
*/
#include "../comedidev.h"
#include <linux/ioport.h>
#define AIO_IIRO_16_SIZE 0x08
#define AIO_IIRO_16_RELAY_0_7 0x00
#define AIO_IIRO_16_INPUT_0_7 0x01
#define AIO_IIRO_16_IRQ 0x02
#define AIO_IIRO_16_RELAY_8_15 0x04
#define AIO_IIRO_16_INPUT_8_15 0x05
struct aio_iiro_16_board {
const char *name;
int do_;
int di;
};
static const struct aio_iiro_16_board aio_iiro_16_boards[] = {
{
.name = "aio_iiro_16",
.di = 16,
.do_ = 16},
};
#define thisboard ((const struct aio_iiro_16_board *) dev->board_ptr)
struct aio_iiro_16_private {
int data;
struct pci_dev *pci_dev;
unsigned int ao_readback[2];
};
#define devpriv ((struct aio_iiro_16_private *) dev->private)
static int aio_iiro_16_attach(struct comedi_device *dev,
struct comedi_devconfig *it);
static int aio_iiro_16_detach(struct comedi_device *dev);
static struct comedi_driver driver_aio_iiro_16 = {
.driver_name = "aio_iiro_16",
.module = THIS_MODULE,
.attach = aio_iiro_16_attach,
.detach = aio_iiro_16_detach,
.board_name = &aio_iiro_16_boards[0].name,
.offset = sizeof(struct aio_iiro_16_board),
.num_names = ARRAY_SIZE(aio_iiro_16_boards),
};
static int aio_iiro_16_dio_insn_bits_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data);
static int aio_iiro_16_dio_insn_bits_write(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data);
static int aio_iiro_16_attach(struct comedi_device *dev,
struct comedi_devconfig *it)
{
int iobase;
struct comedi_subdevice *s;
printk(KERN_INFO "comedi%d: aio_iiro_16: ", dev->minor);
dev->board_name = thisboard->name;
iobase = it->options[0];
if (!request_region(iobase, AIO_IIRO_16_SIZE, dev->board_name)) {
printk("I/O port conflict");
return -EIO;
}
dev->iobase = iobase;
if (alloc_private(dev, sizeof(struct aio_iiro_16_private)) < 0)
return -ENOMEM;
if (alloc_subdevices(dev, 2) < 0)
return -ENOMEM;
s = dev->subdevices + 0;
s->type = COMEDI_SUBD_DIO;
s->subdev_flags = SDF_WRITABLE;
s->n_chan = 16;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_bits = aio_iiro_16_dio_insn_bits_write;
s = dev->subdevices + 1;
s->type = COMEDI_SUBD_DIO;
s->subdev_flags = SDF_READABLE;
s->n_chan = 16;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_bits = aio_iiro_16_dio_insn_bits_read;
printk("attached\n");
return 1;
}
static int aio_iiro_16_detach(struct comedi_device *dev)
{
printk(KERN_INFO "comedi%d: aio_iiro_16: remove\n", dev->minor);
if (dev->iobase)
release_region(dev->iobase, AIO_IIRO_16_SIZE);
return 0;
}
static int aio_iiro_16_dio_insn_bits_write(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];
outb(s->state & 0xff, dev->iobase + AIO_IIRO_16_RELAY_0_7);
outb((s->state >> 8) & 0xff,
dev->iobase + AIO_IIRO_16_RELAY_8_15);
}
data[1] = s->state;
return 2;
}
static int aio_iiro_16_dio_insn_bits_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
if (insn->n != 2)
return -EINVAL;
data[1] = 0;
data[1] |= inb(dev->iobase + AIO_IIRO_16_INPUT_0_7);
data[1] |= inb(dev->iobase + AIO_IIRO_16_INPUT_8_15) << 8;
return 2;
}
static int __init driver_aio_iiro_16_init_module(void)
{
return comedi_driver_register(&driver_aio_iiro_16);
}
static void __exit driver_aio_iiro_16_cleanup_module(void)
{
comedi_driver_unregister(&driver_aio_iiro_16);
}
module_init(driver_aio_iiro_16_init_module);
module_exit(driver_aio_iiro_16_cleanup_module);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
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