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112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Driver for Amplicon PCI263 relay board.
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*
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* Copyright (C) 2002 MEV Ltd. <https://www.mev.co.uk/>
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*
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* COMEDI - Linux Control and Measurement Device Interface
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* Copyright (C) 2000 David A. Schleef <ds@schleef.org>
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*/
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/*
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* Driver: amplc_pci263
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* Description: Amplicon PCI263
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* Author: Ian Abbott <abbotti@mev.co.uk>
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* Devices: [Amplicon] PCI263 (amplc_pci263)
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* Updated: Fri, 12 Apr 2013 15:19:36 +0100
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* Status: works
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*
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* Configuration options: not applicable, uses PCI auto config
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*
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* The board appears as one subdevice, with 16 digital outputs, each
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* connected to a reed-relay. Relay contacts are closed when output is 1.
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* The state of the outputs can be read.
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*/
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#include <linux/module.h>
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#include "../comedi_pci.h"
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/* PCI263 registers */
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#define PCI263_DO_0_7_REG 0x00
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#define PCI263_DO_8_15_REG 0x01
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static int pci263_do_insn_bits(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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if (comedi_dio_update_state(s, data)) {
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outb(s->state & 0xff, dev->iobase + PCI263_DO_0_7_REG);
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outb((s->state >> 8) & 0xff, dev->iobase + PCI263_DO_8_15_REG);
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}
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data[1] = s->state;
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return insn->n;
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}
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static int pci263_auto_attach(struct comedi_device *dev,
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unsigned long context_unused)
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{
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struct pci_dev *pci_dev = comedi_to_pci_dev(dev);
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struct comedi_subdevice *s;
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int ret;
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ret = comedi_pci_enable(dev);
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if (ret)
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return ret;
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dev->iobase = pci_resource_start(pci_dev, 2);
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ret = comedi_alloc_subdevices(dev, 1);
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if (ret)
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return ret;
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/* Digital Output subdevice */
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s = &dev->subdevices[0];
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s->type = COMEDI_SUBD_DO;
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s->subdev_flags = SDF_WRITABLE;
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s->n_chan = 16;
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s->maxdata = 1;
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s->range_table = &range_digital;
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s->insn_bits = pci263_do_insn_bits;
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/* read initial relay state */
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s->state = inb(dev->iobase + PCI263_DO_0_7_REG) |
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(inb(dev->iobase + PCI263_DO_8_15_REG) << 8);
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return 0;
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}
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static struct comedi_driver amplc_pci263_driver = {
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.driver_name = "amplc_pci263",
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.module = THIS_MODULE,
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.auto_attach = pci263_auto_attach,
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.detach = comedi_pci_detach,
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};
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static const struct pci_device_id pci263_pci_table[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, 0x000c) },
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{0}
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};
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MODULE_DEVICE_TABLE(pci, pci263_pci_table);
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static int amplc_pci263_pci_probe(struct pci_dev *dev,
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const struct pci_device_id *id)
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{
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return comedi_pci_auto_config(dev, &lc_pci263_driver,
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id->driver_data);
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}
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static struct pci_driver amplc_pci263_pci_driver = {
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.name = "amplc_pci263",
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.id_table = pci263_pci_table,
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.probe = &lc_pci263_pci_probe,
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.remove = comedi_pci_auto_unconfig,
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};
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module_comedi_pci_driver(amplc_pci263_driver, amplc_pci263_pci_driver);
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MODULE_AUTHOR("Comedi https://www.comedi.org");
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MODULE_DESCRIPTION("Comedi driver for Amplicon PCI263 relay board");
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MODULE_LICENSE("GPL");
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