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/*
* comedi/drivers/adl_pci8164.c
*
* Hardware comedi driver for PCI-8164 Adlink card
* Copyright (C) 2004 Michel Lachine <mike@mikelachaine.ca>
*
* 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.
*/
/*
* Driver: adl_pci8164
* Description: Driver for the Adlink PCI-8164 4 Axes Motion Control board
* Devices: [ADLink] PCI-8164 (adl_pci8164)
* Author: Michel Lachaine <mike@mikelachaine.ca>
* Status: experimental
* Updated: Mon, 14 Apr 2008 15:10:32 +0100
*
* Configuration Options: not applicable, uses PCI auto config
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include "../comedidev.h"
#define PCI8164_AXIS(x) ((x) * 0x08)
#define PCI8164_CMD_MSTS_REG 0x00
#define PCI8164_OTP_SSTS_REG 0x02
#define PCI8164_BUF0_REG 0x04
#define PCI8164_BUF1_REG 0x06
static int adl_pci8164_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
unsigned long offset = (unsigned long)s->private;
unsigned int chan = CR_CHAN(insn->chanspec);
int i;
for (i = 0; i < insn->n; i++)
data[i] = inw(dev->iobase + PCI8164_AXIS(chan) + offset);
return insn->n;
}
static int adl_pci8164_insn_write(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
unsigned long offset = (unsigned long)s->private;
unsigned int chan = CR_CHAN(insn->chanspec);
int i;
for (i = 0; i < insn->n; i++)
outw(data[i], dev->iobase + PCI8164_AXIS(chan) + offset);
return insn->n;
}
static int adl_pci8164_auto_attach(struct comedi_device *dev,
unsigned long context_unused)
{
struct pci_dev *pcidev = 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(pcidev, 2);
ret = comedi_alloc_subdevices(dev, 4);
if (ret)
return ret;
/* read MSTS register / write CMD register for each axis (channel) */
s = &dev->subdevices[0];
s->type = COMEDI_SUBD_PROC;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 4;
s->maxdata = 0xffff;
s->len_chanlist = 4;
s->insn_read = adl_pci8164_insn_read;
s->insn_write = adl_pci8164_insn_write;
s->private = (void *)PCI8164_CMD_MSTS_REG;
/* read SSTS register / write OTP register for each axis (channel) */
s = &dev->subdevices[1];
s->type = COMEDI_SUBD_PROC;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 4;
s->maxdata = 0xffff;
s->len_chanlist = 4;
s->insn_read = adl_pci8164_insn_read;
s->insn_write = adl_pci8164_insn_write;
s->private = (void *)PCI8164_OTP_SSTS_REG;
/* read/write BUF0 register for each axis (channel) */
s = &dev->subdevices[2];
s->type = COMEDI_SUBD_PROC;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 4;
s->maxdata = 0xffff;
s->len_chanlist = 4;
s->insn_read = adl_pci8164_insn_read;
s->insn_write = adl_pci8164_insn_write;
s->private = (void *)PCI8164_BUF0_REG;
/* read/write BUF1 register for each axis (channel) */
s = &dev->subdevices[3];
s->type = COMEDI_SUBD_PROC;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 4;
s->maxdata = 0xffff;
s->len_chanlist = 4;
s->insn_read = adl_pci8164_insn_read;
s->insn_write = adl_pci8164_insn_write;
s->private = (void *)PCI8164_BUF1_REG;
return 0;
}
static struct comedi_driver adl_pci8164_driver = {
.driver_name = "adl_pci8164",
.module = THIS_MODULE,
.auto_attach = adl_pci8164_auto_attach,
.detach = comedi_pci_detach,
};
static int adl_pci8164_pci_probe(struct pci_dev *dev,
const struct pci_device_id *id)
{
return comedi_pci_auto_config(dev, &adl_pci8164_driver,
id->driver_data);
}
static const struct pci_device_id adl_pci8164_pci_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x8164) },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, adl_pci8164_pci_table);
static struct pci_driver adl_pci8164_pci_driver = {
.name = "adl_pci8164",
.id_table = adl_pci8164_pci_table,
.probe = adl_pci8164_pci_probe,
.remove = comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(adl_pci8164_driver, adl_pci8164_pci_driver);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
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