Staging: comedi: add contec_pci_dio driver

/*

    comedi/drivers/contec_pci_dio.c

    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: contec_pci_dio

Description: Contec PIO1616L digital I/O board

Devices: [Contec] PIO1616L (contec_pci_dio)

Author: Stefano Rivoir <s.rivoir@gts.it>

Updated: Wed, 27 Jun 2007 13:00:06 +0100

Status: works

Configuration Options:

  [0] - PCI bus of device (optional)

  [1] - PCI slot of device (optional)

  If bus/slot is not specified, the first supported

  PCI device found will be used.

*/

#include "../comedidev.h"

#include "comedi_pci.h"

typedef enum contec_model {

	PIO1616L = 0,

} contec_model;

typedef struct contec_board {

	const char *name;

	int model;

	int in_ports;

	int out_ports;

	int in_offs;

	int out_offs;

	int out_boffs;

} contec_board;

static const contec_board contec_boards[] = {

	{"PIO1616L", PIO1616L, 16, 16, 0, 2, 10},

};

#define PCI_DEVICE_ID_PIO1616L 0x8172

static DEFINE_PCI_DEVICE_TABLE(contec_pci_table) = {

	{PCI_VENDOR_ID_CONTEC, PCI_DEVICE_ID_PIO1616L, PCI_ANY_ID, PCI_ANY_ID,

		0, 0, PIO1616L},

	{0}

};

MODULE_DEVICE_TABLE(pci, contec_pci_table);

#define thisboard ((const contec_board *)dev->board_ptr)

typedef struct {

	int data;

	struct pci_dev *pci_dev;

} contec_private;

#define devpriv ((contec_private *)dev->private)

static int contec_attach(comedi_device * dev, comedi_devconfig * it);

static int contec_detach(comedi_device * dev);

static comedi_driver driver_contec = {

      driver_name:"contec_pci_dio",

      module:THIS_MODULE,

      attach:contec_attach,

      detach:contec_detach,

};

/* Classic digital IO */

static int contec_di_insn_bits(comedi_device * dev, comedi_subdevice * s,

	comedi_insn * insn, lsampl_t * data);

static int contec_do_insn_bits(comedi_device * dev, comedi_subdevice * s,

	comedi_insn * insn, lsampl_t * data);

#if 0

static int contec_cmdtest(comedi_device * dev, comedi_subdevice * s,

	comedi_cmd * cmd);

static int contec_ns_to_timer(unsigned int *ns, int round);

#endif

static int contec_attach(comedi_device * dev, comedi_devconfig * it)

{

	struct pci_dev *pcidev;

	comedi_subdevice *s;

	printk("comedi%d: contec: ", dev->minor);

	dev->board_name = thisboard->name;

	if (alloc_private(dev, sizeof(contec_private)) < 0)

		return -ENOMEM;

	if (alloc_subdevices(dev, 2) < 0)

		return -ENOMEM;

	for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);

		pcidev != NULL;

		pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) {

		if (pcidev->vendor == PCI_VENDOR_ID_CONTEC &&

			pcidev->device == PCI_DEVICE_ID_PIO1616L) {

			if (it->options[0] || it->options[1]) {

				/* Check bus and slot. */

				if (it->options[0] != pcidev->bus->number ||

					it->options[1] !=

					PCI_SLOT(pcidev->devfn)) {

					continue;

				}

			}

			devpriv->pci_dev = pcidev;

			if (comedi_pci_enable(pcidev, "contec_pci_dio")) {

				printk("error enabling PCI device and request regions!\n");

				return -EIO;

			}

			dev->iobase = pci_resource_start(pcidev, 0);

			printk(" base addr %lx ", dev->iobase);

			dev->board_ptr = contec_boards + 0;

			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;

			printk("attached\n");

			return 1;

		}

	}

	printk("card not present!\n");

	return -EIO;

}

static int contec_detach(comedi_device * dev)

{

	printk("comedi%d: contec: remove\n", dev->minor);

	if (devpriv && devpriv->pci_dev) {

		if (dev->iobase) {

			comedi_pci_disable(devpriv->pci_dev);

		}

		pci_dev_put(devpriv->pci_dev);

	}

	return 0;

}

#if 0

static int contec_cmdtest(comedi_device * dev, comedi_subdevice * s,

	comedi_cmd * cmd)

{

	printk("contec_cmdtest called\n");

	return 0;

}

static int contec_ns_to_timer(unsigned int *ns, int round)

{

	return *ns;

}

#endif

static int contec_do_insn_bits(comedi_device * dev, comedi_subdevice * s,

	comedi_insn * insn, lsampl_t * data)

{

	printk("contec_do_insn_bits called\n");

	printk(" data: %d %d\n", data[0], data[1]);

	if (insn->n != 2)

		return -EINVAL;

	if (data[0]) {

		s->state &= ~data[0];

		s->state |= data[0] & data[1];

		rt_printk("  out: %d on %lx\n", s->state,

			dev->iobase + thisboard->out_offs);

		outw(s->state, dev->iobase + thisboard->out_offs);

	}

	return 2;

}

static int contec_di_insn_bits(comedi_device * dev, comedi_subdevice * s,

	comedi_insn * insn, lsampl_t * data)

{

	rt_printk("contec_di_insn_bits called\n");

	rt_printk(" data: %d %d\n", data[0], data[1]);

	if (insn->n != 2)

		return -EINVAL;

	data[1] = inw(dev->iobase + thisboard->in_offs);

	return 2;

}

COMEDI_PCI_INITCLEANUP(driver_contec, contec_pci_table);