contec_pci_dio.c

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/*
    comedi/drivers/contec_pci_dio.c

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 2000 David A. Schleef <[email protected]>

    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: contec_pci_dio
Description: Contec PIO1616L digital I/O board
Devices: [Contec] PIO1616L (contec_pci_dio)
Author: Stefano Rivoir <[email protected]>
Updated: Wed, 27 Jun 2007 13:00:06 +0100
Status: works

Configuration Options: not applicable, uses comedi PCI auto config
*/

#include "../comedidev.h"

#define PCI_DEVICE_ID_PIO1616L 0x8172

/*
 * Register map
 */
#define PIO1616L_DI_REG     0x00
#define PIO1616L_DO_REG     0x02

static int contec_do_insn_bits(struct comedi_device *dev,
                   struct comedi_subdevice *s,
                   struct comedi_insn *insn, unsigned int *data)
{
    unsigned int mask = data[0];
    unsigned int bits = data[1];

    if (mask) {
        s->state &= ~mask;
        s->state |= (bits & mask);

        outw(s->state, dev->iobase + PIO1616L_DO_REG);
    }

    data[1] = s->state;

    return insn->n;
}

static int contec_di_insn_bits(struct comedi_device *dev,
                   struct comedi_subdevice *s,
                   struct comedi_insn *insn, unsigned int *data)
{
    data[1] = inw(dev->iobase + PIO1616L_DI_REG);

    return insn->n;
}

static int contec_attach_pci(struct comedi_device *dev,
                 struct pci_dev *pcidev)
{
    struct comedi_subdevice *s;
    int ret;

    comedi_set_hw_dev(dev, &pcidev->dev);

    dev->board_name = dev->driver->driver_name;

    ret = comedi_pci_enable(pcidev, dev->board_name);
    if (ret)
        return ret;
    dev->iobase = pci_resource_start(pcidev, 0);

    ret = comedi_alloc_subdevices(dev, 2);
    if (ret)
        return ret;

    s = &dev->subdevices[0];
    s->type     = COMEDI_SUBD_DI;
    s->subdev_flags = SDF_READABLE;
    s->n_chan   = 16;
    s->maxdata  = 1;
    s->range_table  = &range_digital;
    s->insn_bits    = contec_di_insn_bits;

    s = &dev->subdevices[1];
    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    = contec_do_insn_bits;

    dev_info(dev->class_dev, "%s attached\n", dev->board_name);

    return 0;
}

static void contec_detach(struct comedi_device *dev)
{
    struct pci_dev *pcidev = comedi_to_pci_dev(dev);

    if (pcidev) {
        if (dev->iobase)
            comedi_pci_disable(pcidev);
    }
}

static struct comedi_driver contec_pci_dio_driver = {
    .driver_name    = "contec_pci_dio",
    .module     = THIS_MODULE,
    .attach_pci = contec_attach_pci,
    .detach     = contec_detach,
};

static int __devinit contec_pci_dio_pci_probe(struct pci_dev *dev,
                          const struct pci_device_id *ent)
{
    return comedi_pci_auto_config(dev, &contec_pci_dio_driver);
}

static void __devexit contec_pci_dio_pci_remove(struct pci_dev *dev)
{
    comedi_pci_auto_unconfig(dev);
}

static DEFINE_PCI_DEVICE_TABLE(contec_pci_dio_pci_table) = {
    { PCI_DEVICE(PCI_VENDOR_ID_CONTEC, PCI_DEVICE_ID_PIO1616L) },
    { 0 }
};
MODULE_DEVICE_TABLE(pci, contec_pci_dio_pci_table);

static struct pci_driver contec_pci_dio_pci_driver = {
    .name       = "contec_pci_dio",
    .id_table   = contec_pci_dio_pci_table,
    .probe      = contec_pci_dio_pci_probe,
    .remove     = __devexit_p(contec_pci_dio_pci_remove),
};
module_comedi_pci_driver(contec_pci_dio_driver, contec_pci_dio_pci_driver);

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");