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/*
comedi/drivers/amplc_pci263.c
Driver for Amplicon PCI263 relay board.
Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/>
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: amplc_pci263
Description: Amplicon PCI263
Author: Ian Abbott <abbotti@mev.co.uk>
Devices: [Amplicon] PCI263 (amplc_pci263)
Updated: Fri, 12 Apr 2013 15:19:36 +0100
Status: works
Configuration options: not applicable, uses PCI auto config
The board appears as one subdevice, with 16 digital outputs, each
connected to a reed-relay. Relay contacts are closed when output is 1.
The state of the outputs can be read.
*/
#include <linux/pci.h>
#include "../comedidev.h"
#define PCI263_DRIVER_NAME "amplc_pci263"
/* PCI263 PCI configuration register information */
#define PCI_DEVICE_ID_AMPLICON_PCI263 0x000c
static int pci263_do_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
/* The insn data is a mask in data[0] and the new data
* in data[1], each channel cooresponding to a bit. */
if (data[0]) {
s->state &= ~data[0];
s->state |= data[0] & data[1];
/* Write out the new digital output lines */
outb(s->state & 0xFF, dev->iobase);
outb(s->state >> 8, dev->iobase + 1);
}
data[1] = s->state;
return insn->n;
}
static int pci263_auto_attach(struct comedi_device *dev,
unsigned long context_unused)
{
struct pci_dev *pci_dev = comedi_to_pci_dev(dev);
struct comedi_subdevice *s;
int ret;
ret = comedi_pci_enable(dev);
if (ret)
return ret;
dev->iobase = pci_resource_start(pci_dev, 2);
ret = comedi_alloc_subdevices(dev, 1);
if (ret)
return ret;
s = &dev->subdevices[0];
/* digital output subdevice */
s->type = COMEDI_SUBD_DO;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 16;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_bits = pci263_do_insn_bits;
/* read initial relay state */
s->state = inb(dev->iobase) | (inb(dev->iobase + 1) << 8);
dev_info(dev->class_dev, "%s (pci %s) attached\n", dev->board_name,
pci_name(pci_dev));
return 0;
}
static struct comedi_driver amplc_pci263_driver = {
.driver_name = PCI263_DRIVER_NAME,
.module = THIS_MODULE,
.auto_attach = pci263_auto_attach,
.detach = comedi_pci_disable,
};
static DEFINE_PCI_DEVICE_TABLE(pci263_pci_table) = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI263) },
{0}
};
MODULE_DEVICE_TABLE(pci, pci263_pci_table);
static int amplc_pci263_pci_probe(struct pci_dev *dev,
const struct pci_device_id *id)
{
return comedi_pci_auto_config(dev, &lc_pci263_driver,
id->driver_data);
}
static struct pci_driver amplc_pci263_pci_driver = {
.name = PCI263_DRIVER_NAME,
.id_table = pci263_pci_table,
.probe = &lc_pci263_pci_probe,
.remove = comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(amplc_pci263_driver, amplc_pci263_pci_driver);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi driver for Amplicon PCI263 relay board");
MODULE_LICENSE("GPL");
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