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// SPDX-License-Identifier: GPL-2.0+
/*
* Driver for Amplicon PCI263 relay board.
*
* Copyright (C) 2002 MEV Ltd. <https://www.mev.co.uk/>
*
* COMEDI - Linux Control and Measurement Device Interface
* Copyright (C) 2000 David A. Schleef <ds@schleef.org>
*/
/*
* 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/module.h>
#include <linux/comedi/comedi_pci.h>
/* PCI263 registers */
#define PCI263_DO_0_7_REG 0x00
#define PCI263_DO_8_15_REG 0x01
static int pci263_do_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
if (comedi_dio_update_state(s, data)) {
outb(s->state & 0xff, dev->iobase + PCI263_DO_0_7_REG);
outb((s->state >> 8) & 0xff, dev->iobase + PCI263_DO_8_15_REG);
}
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;
/* Digital Output subdevice */
s = &dev->subdevices[0];
s->type = COMEDI_SUBD_DO;
s->subdev_flags = 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 + PCI263_DO_0_7_REG) |
(inb(dev->iobase + PCI263_DO_8_15_REG) << 8);
return 0;
}
static struct comedi_driver amplc_pci263_driver = {
.driver_name = "amplc_pci263",
.module = THIS_MODULE,
.auto_attach = pci263_auto_attach,
.detach = comedi_pci_detach,
};
static const struct pci_device_id pci263_pci_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, 0x000c) },
{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 = "amplc_pci263",
.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 https://www.comedi.org");
MODULE_DESCRIPTION("Comedi driver for Amplicon PCI263 relay board");
MODULE_LICENSE("GPL");
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